Talk:Sewage treatment

585: 863:,I can confirm that this is not experience from Wales but across the world including the USA, New Zealand, Australia and several countries in Europe (France, Spain, Italy, Greece etc.) including a great deal of work around London including the two big works serving London. Wherever you go, the principles are the same, settle the solids out, treat the resulting liquor, settle out the biological solids and get rid of the water to the environment and the solids somewhere else. You can join these processes up in all sorts of novel and interesting ways but the principles usually stay much the same. 876:

done. There's lots and lots of information that can be added here, and just because you "don't think it's important for the public to know" doesn't mean it shouldn't be added. There's whole processes, equipment, methods, equipment names, and various other things that aren't listed in the article that are actually really quite important if you're even semiserious about the subject. What about hydroseperators? Different types of hydroseperators for different purposes? The difference between a settling tank and a hydroseperator and their relative merits? Different types of drying equipment? --

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soda (for those really tough stains!), bleach, chlorinated solvents react with other components or evaporate off during the aeration stage. Alkaline materials tend to saponify fats producing soaps and glycerine; chlorine from bleach mostly oxidises organic components producing innocuous chloride ion. However; some difficult or potentially toxic materials do remain including small concentrations of halogenated organics, pharmaceutical residues, hormone residues, medical radio-isotopes etc. all of which, very greatly diluted, are discharged into the environment.

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broad, probably tier four, headings setting out the broad topics which might be "Inputs", "Processes", and "Outputs" and within these describe the components in simpler English while still quoting the accepted technical term. This probably means re-using the same ref or refs several times, but that isn't a problem. The text already says it is technical and complicated, so chopping the explanation up into easier to digest paragraphs should aid comprehension. I would suggest that the section is looked at again. The starting sentence includes

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households, some wastewater from industries or commercial activities as well as stormwater. "Wastewater treatment plant" also should redirect to here (at the moment it redirects to "water treatment" which is not helpful). The term "sewage treatment plant" is also used but in my opinion WWTP is more common worldwide. Note there is a separate article on "industrial wastewater treatment" which could nicely be linked to from the page of "wastewater treatment" when it is called wastewater treatment instead of "sewage treatment".

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industrial wastewater treatment plants (and even they may use biological processes such as activated sludge) - and for that there is already a decent Knowledge page of its own (called industrial wastewater treatment). In any case, a redirect from wastewater treatment to "water treatment" is wrong... I don't quite understand your idea for a disambiguation page? Which terms would be listed on such a page? Don't we need to have several? Would you agree to have a redirect from wastewater treatment to sewage treatment?

233: 200: 359: 338: 726:"Developing countries as diverse as Egypt, Algeria, China or Colombia have invested substantial sums in wastewater treatment without achieving a significant impact in terms of environmental improvement. Even if wastewater treatment plants are not properly operated, it can be argued that the environmental impact is limited in cases where the assimilative capacity of the receiving waters (ocean with strong currents or large rivers) is high, as it is often the case." 486: 465: 369: 850:

shared on what factors into decisions on how sewage works are structured. If this is not possible, then at least a few of the most common arrangements, and then a description of the variables that determine what methods are used where would be desireable. There are so few constants in the world of sewage treatment, that it would be impossible to structure one article around a "typical" sewage works, because such a sewage works does not exist.--

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excellent heat and mass transfer characteristics. In a fluidized bed reactor, the substrate is passed upward through the immobilized enzyme bed at a high velocity to lift the particles. However the velocity must not be so high that the enzymes are swept away from the reactor entirely. This causes low mixing; these type of reactors are highly suitable for the exothermic reactions. It is most often applied in immobilized enzyme catalysis

1905:-Influent Pumping -Screening (mechanical bar screens) -Degritting -Aereation basins (oxidation ditch) -Anerobic tanks -Anoxic tanks -Clarification (circular gravity clarifiers) -Tertiary Filters (Rapid Sand Filters) -UV Disinfection -Effluent Pumping -Sream Outfall -Laboratory -Aerobic Digesters -Various Equipment (pumps, blowers, motors, etc) -Power backup (turbo-diesel generators) -Sludge Dewatering (belt filter presses, centrifuge) 264: 668: 1723:

hydrogen and metals. The result is oil, light combustible gases such as methane, propane and butane, water with soluble salts, carbon dioxide, and a small residue of inert insoluble material that resembles powdered rock and char. All organisms and many organic toxins are destroyed. Inorganic salts such as nitrates and phosphates remain in the water after treatment at sufficiently high levels that further treatment is required.

1387:, though I would consider "industry" loosely a synonym for "sector" here. Either one would certainly include non-commercial WWT and conveyancing, and the widely differing forms in different countries, range of technologies etc - a real umbrella term... As you say, sewage is a subset of wastewater; and I strongly feel that there needs to be a single place to house an overview of the whole 575: 554: 191: 2061:

exact same quantity. Or that most of that water you dumped never reaches the most downstream basin/reservoir in your state - it evaporates. Yes, this is (mostly) all due to the cattle wars. I'm not sure of the legality in other countries but this tends to be a true pattern, wherever water rights were literally fought over, which is practically everywhere.

994:("Sewage fungus") , absence of clean water indicator species and large numbers of facultative anaerobic species) it certain that there is unseen damage extending over wider areas. I have seen such conditions at locations in Western Australia, Queensland, , Greece, France and Spain and I am certain that most developed countries have their own examples. 3637:. The aim here is to show the variety of sewage treatment process and sizes that exist around the world, i.e. not to just focus on the activated sludge process. For the same reason, I have also created an image collage for the lead now. We can discuss further if I found a good balance or if we need different photos that are more suitable/appealing. 3552: 1071:; one primary use for them is wastewater and sewage treatment. I've linked back here, but I'm not sure how much detail I should go into on how they function as wastewater treatment systems. At the moment, I'm working on a description of their design for different purposes and plan to provide examples. Any suggestions? 2710:

concentrations may be so different from sewage that pretreatment is required prior to discharge to a municipal sewer. The fact that many large municipalities use a single collection system routing varied wastes through their sewage treatment plants may obscure the disadvantages of combined wastewater treatment.

3696:, performance, treatment residuals, sludge processing, environmental constraints, chemical product requirements, energy requirements, requirements of other resources, personnel requirements, operating and maintenance requirements, ancillary processes, reliability, complexity, compatibility, area availability 3811:. Then the 4th tier headings could follow with a common English explanation of the terms where they are less obvious and a rationale for their inclusion in the assessment and design. Happy to help and advise as any change goes along, but my ability to contribute much is inhibited by real life at present. 3797:

For the lay reader and even the moderately well informed reader, these comma separated lists are quite intimidating. Within them the individual terms are also highly specialised and probably need to be individually explained, at least in some cases. I think that I might be inclined to to start with a

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OK, I see what you mean. So can you set up those two disambiguation pages? That would be good. - But "water treatment" is not the top level entry because water is not equal to wastewater. If I look for wastewter treatment, I would never look under water treatment. Water treatment primarily stands for

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I agree that this section needed more work. I have done a bit but it needs more. I have moved the part about Israel to a new section on reuse, as it's more about reuse. I don't think it would be very interesting to have a by-country section as the situation in almost all developing countries is quite

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This sections seems like an indiscriminate collection of information. The thing that seemed wrong to me initially was the inclusion of Israel, which is a developed country, but actually the section is problematic overall. It mostly provides random information from three countries: Venezuela, Iran and

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Following edit has been removed; although the header "Circular sedimentation tanks" is best swapped for "Settling basin", I think it's accurate to place it at a seperate section. If you look at the schematic on the article, circular sedimentation tanks also come behind the rectangular, aerated/vortex

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Catfish are used in septic tanks in Indonesia, to eat the waste and prevent the tank from filling up with solids too quickly. I can't find a valid source, so I'll just offer these links for now, and hope that someone comes up with a source. I might try and co-author a journal article on it next year,

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Ah good news: the publisher just sent me an e-mail to say that this volume (volume 1) is in fact CC BY. He wrote: "It has been agreed with Marcos von Sperling that the licence for volumes 1-6 will be CC BY. Vol 7 is CCBY NC ND. This information will be added to the homepages of the book." I will add

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I propose to change the name of this article to "wastewater treatment". The term sewage is more and more being replaced with "wastewater". Already in the lead paragraph we speak of wastewater. Sewage used to be just for household wastewwater but in municipal sewer systems there is always a mixure of

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I am a retired ChE with no sewage plant knowledge. I found the article a good introduction; however, I would suggest adding a specific discussion of the process flow diagram shown in the article. Its content does not relate directly to the text, resulting in unnecessary difficulty in understanding

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I removed the "advertisement" notice. The content seems neutral enough to me. The mere fact that some sections will have more detail than others -- an unavoidable consequence of Knowledge's method -- may result in some portions seeming laudatory or hortatory. Anyone who has knowledge of different

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For example, one process which combines secondary treatment and settlement is the Sequential Batch Reactor (SBR). Typically, activated sludge is mixed with raw incoming sewage and mixed and aerated. The resultant mixture is then allowed to settle producing a high quality effluent. The settled sludge

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The article includes lists of "Possible Equipment" that I do not recognize. I have been a water professional for over 30 years and do try to keep up. I suspect that there may be brand names mixed in. I feel that an encyclopedia article should not include these in the main treatment article, although

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I hadn't realised "sewerage" was UK-centric, but it does seem to be. So the umbrella term should probably be "wastewater" (or "wastewater system" or possibly "sanitation"), not least because "wastewater industry" is the preferred term for the industry. The category needs changing too, if we agree on

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Is 'Sewerage' not a more appropriate title for any article on sewers, pumps, etc? In my experience, the word 'sewers' refers exclusively to pipes, and not the other components of sewerage such as pumping stations. Sewer could then be used to refer to sewage pipe history/technology/usage which is a

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I propose that, rather than going through the process step by step (which is going to be incorrect the second you start looking at a different plant, as the author seems to've taken his information from one specific plant in Wales), processes used on most sites should be described individually, each

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Sounds good, please go ahead. I don't have much time at the moment for the topics around wastewater (my main focus currently is climate change). I just came back to this article in order to ensure there is no copyright violation that I could have introduced when using that book by von Sperling... I

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Thanks, so we agree that wastewater is a bit broader than sewage? So wastewater (treatement) could be the main article and sewage (treatment) could be one thereunder? However, there is no real difference between a wastewater treatment plant and a sewage treatment plant, except in the case of purely

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Circular sedimentation tanks, clarifiers, primary settlement tanks, secondary settlement tanks, sludge consolidation tanks - call them what you like, but they are probably the most common tank in the business and are mentioned throughout the article and therefore don't need a separate section as if

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Soaps are organic, as are most detergents and other laundry products - nearly all or which are either chemically bound into fats and greases and skimmed of the primary tank or are degraded biologically in a filter bed or activated sludge tank. Truly inorganic materials such as washing soda, caustic

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A friend of mine that worked in water treatment always use to point out what he called Primary Settlement Tanks or PST's when we went past sewage works. As far as I can see there isn't a direct reference to them in this artical. Is that something that is missing? He was mainly refering to items

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This article is presently over 72K -- more than twice the 32K length considered a useful maximum for a compact table of contents allowing readers to quickly find the information they need, and editors to appropriately place their contributions. In the absence of objections, I propose to reduce this

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should be an article about how sewage is treated - i.e. conventional wastewater treament methods - with the history, administration etc in their own separate articles. So although that I agree with most of what you propose, it was the very part that I would have wished to retain that was separated

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I agree that this article needs to be divided into a number of separate topics and, as I noted before, I would certainly like to see the Sewerage part separated off as a priority. My problem was in finding a title that reflected widespread usage across the English speaking world - Sewerage seesm to

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Unfortunately my personal experience is limited to the UK and Aus. Doing a quick google search seems to indicate that the term 'sewer system' is used in the US alongside 'sewerage' which might account for the confusion. The american Columbia Encyclopedia seem to concur with the UK/Aus definition.

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Let's do this -- there should be a section describing standard treatment protocols in developed countries, a subsection pointing out international differences (say, between US, UK, europe, australian treatment methods), and another section entirely dealing with the environmental impact of variously

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washing. Each of the wastewaters has unique treatment requirements. While some treatment requirements are similar to one or more stages of sewage treatment, they usually do not require disinfection, often do not require secondary treatment, and sometimes do not require primary sedimentation. Waste

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The choice of a wastewater solid treatment method depends on the amount of solids generated and other site-specific conditions. However, in general, composting is most often applied to smaller-scale applications followed by aerobic digestion and then lastly anaerobic digestion for the larger-scale

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Alum is very widely used as a coagulant in potable water treatment, and used as well in waste water treatment plants where space is an issue. Indeed, it increases the sedimentation speed and thus reduces the size of the sedimentation tank, especially associated with a lamellar sedimentation tanks.

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I agree that in British usage, sewerage refers to and includes all that infrastructure used to convey sewage from its origin to the point of disposal and therefore includes pipes, valves, pumps, screens etc. I would be happy to see this separated out and included in a linked articlee provided that

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I have provided some updates to treament methods but it is still North American flavoured. Much remains to be done and I an unhappy about some of the statements about the lack of environmental impacts for sewage discaring into high dilution systems. All the evidence demoinstrates that the impacts

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I did respond but Knowledge obliterated my response. I tried to say that, you make exactly my point. There are many sorts of novel and INTERESTING ways - please give me a reason why these shouldn't be added to the article? I'm not critising the work that you've done, more the work that hasn't been

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is open access but has an ND NC licence which was not clear from the website; so not compatibly licenced). Anyway, while doing this work I came to a point where I was undecided what to do about two long sentences that enumerate certain factors. I put them in quotes for now but I guess this is not

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article about the global situation which should probably be moved to "sewage treatment". But other editors will probably continue to add content to "wastewater treatment" in future because colloquially it is used perhaps even more than "sewage treatment" nowadays. I also have the feeling that the

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The carbon absorption following biological treatment is particularly effective in reducing both the BOD and COD to low levels. A fluidized bed reactor is a combination of the most common stirred tank packed bed, continuous flow reactors. It is very important to chemical engineering because of its

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A major reason this is not practiced more widely in the USA for example, is that states have laws against reuse of water as you're somehow 'stealing' it from downstream users. Nevermind that you go and just take more of your quota from your reservoirs and dump your waste downstream in almost the

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The disadvantage of such processes is that precise control of timing, mixing and aeration is required. This precision is usually achieved by computer controls linked to many sensors in the plant. Such a complex, fragile system is unsuited to places where such controls may be unreliable, or poorly

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I have reverted a new reference to the use of Alum coagulants in sedimentation. I am not aware of this practice, which sounds very expensive, especially as most sewage settles adequately without chemical assistance. If Alum is widely used, a reference would be useful and some idea of where in the

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At the end of the article, with the reader now fully knowledgeable of what components can make up a sewage treatment plant, there can be an expansion on the structuring and arrangement of components of a sewage works, and their relative merits. There seems to be a lot of potential knowledge to be

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counts, but coliform organisms live in such a wide variety of hosts that high background levels from birds, rodents, and domestic livestock and pets may mask true sewage plumes. Measurement of true pathogen counts is comparatively seldom undertaken, and assumptions of coincidence with receiving

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is a more encompassing term for a subject of sufficient interest to generate adequate text for subordinate articles. I disagree with the assertion that sewage treatment systems will always contain stormwater and industrial and commercial wastewater, although such components are common in larger

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In addition to correct a mistake in the definition of "mesophilic" and "thermophilic", I deleted the reference to large tanks were sludge is supposed to be left for weeks in anaerobic conditions. I don't really understand what the original writer is talking about, as non-heated closed anaerobic

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Wastewater treatment currently consumes about 15 GW or about 3% of the electrical power produced in the United States. Domestic, industrial and animal wastewater together however contains about 17 GW of potential energy. At present, this energy is still untapped, yet could be extracted using a

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I've noticed that the sequence in which each part of the sewage works process is in a specific sequence, as if it were saying "this is the order in which the seperate processes occur", but this is in fact incorrect as each plant arranges their process in a slightly different way, with slightly

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The choice between circular or rectangular tanks is largely a function of available space and volume of wastewater to be treated. Rectangular clarifiers are used where space restrictions or very large flows encourage common wall construction of multiple basins within a small land footprint.

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I have removed the following text from the article because it seems to make little sense to me as part of the sewage treatment process. If someone can re-draft it so that it make sense to the ordinary reader and assuming that it is still relevant to this article, it could then be re-inserted.

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In many countries strapped for water, it is necessary to recycle water from sewage treatment plants into either potable water, requiring high purity, or irrigation water, permitting a lower quality. I was rather surprised not to see either feature mentioned in this article, which is therefore

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to convert reduced complex organics to oil. The premacerated, grit-reduced sludge is heated to 250C and compressed to 40 MPa. The hydrogen in the water inserts itself between chemical bonds in natural polymers such as fats, proteins and cellulose. The oxygen of the water combines with carbon,

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This issue still requires looking at. I just realised that when it comes to the global situation, the term used in most publications by the UN is "wastewater treatment" but we would call it "sewage treatment" within the Knowledge context. As a result, there is now a bit of new content on the

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This is one heck of an understatement. It does more than just reduce efficiency. It can totally disrupt a plant for a long period of time. It essentially shuts down many plant designs for various reasons, including the ecosystems in each tank. Maybe someone with more experience with this

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shouldn't be allowed to overwhelm the entire article, so a daughter article plus summary is appropriate. This would also be the place to put (in a daughter article if enough detail) discussion of the environmental aspects of (lack of) WWT, being a key driver as well as health issues for its

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Although other wastewaters are commonly treated with sewage for reasons including dilution and economy of scale, merger would obscure both the significantly different treatment requirements for differing wastewaters and the reduced fraction of pollutants removed from combined wastewaters.

1349:. It is treated by the wastewater industry (whatever that may be from country to contry). It is also treated in communities, by private enterprise and by individual house-holders. Hence my reluctance to bundle this in with the waste water industry. I would be delighted to have an article 3016:

A new sewage sludge treatment process aimed at developing countries is currently under development. It is called the Omni Processor and is a self sustaining process which uses the solids of the sewage sludge as fuel to convert the waste water into drinking water and surplus electrical

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In the Process overview section, MBBR (Moving Bed Biofilm Reactor) is discussed in the Secondary treatment sub-section with a direct link to World Water Works’ website, a business that provides wastewater treatment solutions. With multiple businesses providing MBBR solutions such as

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article. I suggest access to information about other methods of secondary treatment can be through additions to this list if notability has warranted a separate Knowledge article, or by description in the secondary treatment article if no separate Knowledge article is available.

1457:" abbreviated "POTW". It refers to both the Treatment faiclities and the wastewater collection system transporting wastewater to the treatment plant, and is very close in meaning to "sewerage" when restricted to a single system and is used most often in a regulatory context. - 1881:

mentions that freshwater catfish are used to remove impurities from water; it states that catfish used in the way must be cleansed before eating, by being placed in flowing water. (The article doesn't state how long for, or just how much this improves the taste & safety).

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The energy from decompressing the material is recovered, and the process heat and pressure is usually powered from the light combustible gases. The oil is usually treated further to make a refined useful light grade of oil, such as no. 2 diesel and no. 4 heating oil, and then

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I'm in the same boat since I've worked in the water and waste water treatment fields as well. A link to the articles on those devices which themselves contain a list of brands (inclusive, not just one or two but most or all manufacturers) would probably be more acceptable.

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In the urban UK, excess sewage can be released to surface waters during storm events. There are certainly plenty of examples of poorly teated sewage visibly imapcting upon the reciving environment in wealthy countries. If visible signs are present (anoxic zones, presence of

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Some additional images would greatly improve the article. Please go ahead. Only one caveat - most sewage in the world is actually treated in the many tens of thousands of small rural works so it would be good to maintain a balance and illustrate both large and small works

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elegant. However, I also think it makes little sense to now find synonyms for each term; and I can't really change the "sentence structure" to paraphrase it as it's just a listing of factors. I could drop some factors from the list but I'd find that almost like

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and replaced it with an excerpt. This is to keep all the history stuff in one place rather than having overlapping content in several places. Hopefully like this it will be enough to give people an idea and to show them where they have to look for more

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To try and make this article a more manageable size, I have created a new article as a home for the sludge treatment and disposal topics. I have retained a precis here as an overview but have tried to avoid overt duplication between the two articles.

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incomplete. I don't have enough know-how to write a section, although I understand that single stage RO (much cheaper than desalination) plus UV irradiation is used for the former and ultrafiltration for the latter. Could anyone add this, please? --

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During 2007 - 2009 I have worked as a consultant engineer in London for water and wastewater treatment works. My clients were Thames Water, Anglian Water and Scottish Water and the acronym PSTs for Primary Settlement Tanks was commonly used.

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phenomenon could State it in more detail. It's not like it's even 'original research' since there's plenty of books to reference in the treatment industry on possible plant failures. For example, the books used to study for exams.

3014:. For example, the recent addition about the Omni processor should in my opinion rather be on the sewage sludge treatment page as it is clearly a process for sewage sludge only, not for sewage treatment: New research developments 838:

different methods employed at each stage. There are so many different ways of arranging plants, each with their own benefits and reasons, that it seems incomplete without at least mentioning this and going into some detail on it.

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If you need to whittle down on a lot of factors, you can use multiple sources and see what other sources say is important. In general, listing loads of factors gives little insight to our readers, as you're omitting any context.

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but do work in the industry, and would like to see the definitions conform more to current standards and practices. I can work on this if nobody else is willing to, but like I said, I don't run a treatment plant or anything....

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This still seems confusing with sewerage (the pipes and pumps etc.) and sewage treatment mixed in one article. It looks as though we should separate out the sewerage bit ( and this would include most if not all the history) into

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proposing that it might be appropriate to promote this article to GA status. Because this may impact other articles , the discussion is currently at the Sanitation Project talk page where comments and suggestions are welcome.

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notable companies could have references and articles. For example, "belt press" and "vacuum filter" are types of dewatering equipment, but including Andritz or Roediger would be inappropriate since those are manufacturers. --

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should be the main article for the regulatory/business/organisational aspects of the water and sewerage industry. (Possibly it should be renamed appropriately; but "water industry" often is used to cover both.) We could have

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Our disagreement may be wider than I initially recognized. Wastewater is MUCH broader than sewage. Wastewater is any water no longer needed (or suitable) for its most recent use. Wastewater includes such diverse sources as

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topic. In the UK such wetlands include engineered reed-beds which are also widely used to treat agricultural waste and to help mitigate the effects of diffuse agricultural pollutionm, mine leachatres and highway run-off.

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To reduce this article to a manageable size, I support moving much of the description of alternative sludge treatment and disposal options to a subsidiary page; while leaving a summary and main article link on this page.

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may be confusing, but I believe the original intent was to recognize treatment as making raw water suitable for some specific use, rather than implying potable water for domestic use as a layman might interpret the term.

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Is there a nice way to clean up the "Lagooning", "Pressing", etc list? It doesn't read well, but since I can't even figure out if they're supposed to be subsections or separate sections, don't want to mess with it...

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Yes, let's do it. This will also help to improve the article on sewage sludge treatment which so far has almost no references. I would say ALL information about sewage sludge treatment should be moved to the existing

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from me but we need to take another look at how we can make it clearer that it's not the same. I think the two articles for treatment are fairly OK, but last time I checked I found quite a bit of overlap between

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in the mid-20th century or later generally have built separate systems for sewage (sanitary sewers) and stormwater, because precipitation causes widely varying flows, reducing sewage treatment plant efficiency."

3598:. I will save after each small change and explain in the edit summary what was done. Happy to engage in further discussions on those changes. He has also sent me some images, some of which I will also include. 1796:, as well as hydrolysis and methanogenesis. I dont mind using the term "fermented" since it's commonly understood, resonably correct and often used in non-technical literature to describe anaerobic digestion. 3406:

I have made some modifications to both articles in the meantime and hope that the borders between the two articles are now clearer. We just have to make sure that in future, new editors don't add content to

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Many technical, environmental and economic factors affect the design of a sewage treatment plant and, with the exception of small rural works, each one will be designed to suit the particular conditions

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Hi page watchers: I came back to this article today to make some corrections to content that I had added a year and a half ago to ensure it's not violating copyright (I found out that the very good

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Some of the article seems to have been written as if it's only about the U.S. — e.g., "Sewage collection and treatment is typically subject to local, state and federal regulations and standards." --

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The broad description of secondary treatment would remain a part of this article; and much of the information to be removed from this article can be found by following the main article link to the

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I think I will wait until Spring when there is no snow and the grass is green... not a great time now to take outdoor pics, but i will post some of the indoor processes here on the talk page.

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A textbook listed them as follows: "process applicability, applicable flow, acceptable flow variation, influent characteristics, inhibiting or refractory compounds, climatic aspects, process

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i belive its accepted wisdom that its better to dump raw sewage into rivers etc than to let it back up in the pipes causing all manor of problems. So when treatment fails thats what happens!

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potable water treatment. Water is not (yet) polluted and has not (yet) been through a process. - Having those proposed disambiguation pages would solve our problem, I agree with Thewellman.

2523: 2457: 2062: 1609: 1837:. I have added much as to the methods of dewatering and disposal, as that section is very small and needs to be expanded. i think right now that is the only topic on the discussion page. 2566:

Israel. There is one general and unsourced line about sub-Saharan Africa without any useful information. There is no information about Asia or the Americas beyond the above countries.

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the length of the first quote is individually nearing the place where copyright comes into play (for most articles, I'm concerned about your total quoting not the individual quoting)

3755:); without context you make this more difficult than the original academic source. I had no idea what influent characteristics were till I read the context in the academic source... 2569:

I see two possible solutions: either removing the section entirely, or having a by-country section which will list information on sewage treatment in as many countries as possible.

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OK - I have done the deed. Mostly just rather coarse cut and paste so probably a lot of loose ends to tie up and lots of wiki linking to fix. Help appreciated, comments welcomed.

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there is a similar usage in other English speaking countries. Does the word 'sewerage' have the same meaning in the USA and Canada ? I believe that it does in Australia and NZ.

3665:, i.e. me deciding which one is more important than another one. Also the whole point is to show that there are numerous factors to consider. (I do know that Knowledge is 320: 147: 3454:

I agree this is a broader issue for many Knowledge articles. If you see anything that requires changing, please do point it out or make the change directly if you can.

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article length by about 10K by replacing the descriptive paragraphs and illustrations of the various methods of secondary treatment with this bulleted list of articles:

3955: 3925: 768:. There are at least two other broad categories to be considered. The first is bacterial and viral pathogens. Water quality has traditionally been assessed with 2363: 3228: 3224: 3210: 1103:

significant field in its own right, while sewerage could describe or link to sewage pumps, pumping stations, and network design. I would be happy to contribute.

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I don't know if you know this, but treated sewage can be used as fertilizer. You all should look into it. It's a new form of making agriculture more productive.

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Wanna change the term "fermented" in the article. It is unapropriate, as fermentation product is alcohol. Thought about "hydrolysed", but it's not much better.

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active substances capable of causing biological changes at unmeasurably low concentrations. These situations were first identified with industrial wastes like

437: 3884:. Comments and suggestions should be made in this thread rather than at my sandbox talk page. I am aware that several more sources will also be needed. Thanks 1373:

is a logical , self contained and appropriate article that should describe how sewage (and not wastewater ) is treated. I am happy to progress this if needed.

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suggests. It would also be cleaner if the administrative and regulatory aspects could also live elsewhere. I hope that the current version is closer to what

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I have been sketching out a less technical explanation, without any additional headings, as a replacement for the above section of text. My current draft is

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I also agree that the admin/ regulatory parts needs its own article but, to reflect a wide spectrum of practices throughout the world, perhaps this shoud be

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https://web.archive.org/web/20131224102422/http://www.johnrashton.securemachines.co.uk/documentbank/the%20healthy%20city%20and%20the%20ecological%20idea.pdf

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Um. We haven't really settled the naming issue yet, have we? We need a main article, and a name for the category; currently the category is "sewerage", but

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is run off and re-aerated before a proportion is returned to the head of the works. SBR plants are now being deployed in many parts of the world including

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the sentence is way too long. Using sentences like this is exclusionary, as it makes Knowledge inaccessible for people with low-to-average reading skill.

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The section on "Sedimentation solidification and evaporation" refers to a piometre. I can't find any information on what that is--could it be a typo?

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term "wastewater treatment plant" (WWTP) is replacing "sewage treatment plant" (STP) in many cases. So we have a problem here that is not going away...

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etc. all of which would somehow have to be shoe-horned into one article. There is some significant overlap but that would be best dealt with by pruning

3294:. The subject is exactly the same in common usage of the terms, and the information is mostly duplicates that could be consolidated better on this page 2496:

Where is the reference on Nitrospira being more active than Nitrobacter in the environment? I have read that this is true only for marine environments.

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I have simplified the sludge treament and disposal sections to make tidier. However, the whole article still needs a major make-over see comments from

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That sounds fine. Do you want to have a go at it ? Happy to help but wouldn't want to get into editing conflicts which might be even more confusing !

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Provided a better balance between different types of sewage treatment processes. The current emphasis was too much on the activated sludge process.

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Yes, I think you should submit photos as they would be very useful.And if you have the time please post take and post photos for all the processes

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wonder if your suggestion would make it too detailed though, with level 4 headings? Please feel free to remove anything that doesn't conform with

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page (i.e. not just the information on alternative sludge treatment), except for a short summary that can remain on the page of sewage treatment.

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digesters would have a huge, anti-economic, size and would only be possible were incoming sewage temperature would be high enough to allow this.

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Why don't you have a bash; I'm pretty busy for the next few weeks and the reworking will need more time and energy than I have at the moment.

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Primary, secondary, and tertiary treatment all have time-tested definitions in the United States. I'm not an expert on this specific topic

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already has quite abit about the collection of sewerage, and would seem to me to be the best place for long histories on sewer systems etc.

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This paragraph is highly questionable and I am going to remove those lines until somebody finds a reliable source to proof this statement.

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treatment techniques that may be better, or who knows of drawbacks to the methods written of, is welcome to post such additional material.

900:"Modern sewage treatment" is mixed with laws, problems, and systems for sewage treatments. It should be splitted into different sections. 3684:

This is the text block and in bold the two sentences (I guess the number of times that the word "requirement" appears could be reduced):

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Done. Thank you for the confirmation. I like to verify these types of issues via the talk page to ensure I am editing pages correctly.

3950: 2119: 2051: 310: 3415:. Hopefully, the wastewater treatment article will remain as a more high-level overview article that does not go in depth in anything. 2552:

US Environmental Protection Agency (EPA). National Risk Management Research Laboratory, Cincinnati, OH. Document No. EPA/600/JA-99/275.

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Conversion of Wastes into Bioelectricity and Chemical by Using Microbial Electrochemical Technologies by Bruce E.Logan, Korneel Rabaey

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Alum can always be used as well to cope with sedimentation problems. In that case, it's only a way to deal with badly designed plants.

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When you have finished reviewing my changes, you may follow the instructions on the template below to fix any issues with the URLs.

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This is because the main important factors to be considered when evaluating and selecting sewage treatment processes are numerous.

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as the latter often covers both, and it'll make it easier to develop the topic at this early stage since so many issues in common.

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but I don't like that at all - it just feels too general. ...Anyway, I would point out that we can always change the name later.

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used in, to give the reader a general overall understanding of the methods employed and the common application of those methods.

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With regards to environmental impacts of sewage treatment plants the following aspects are included in the selection process: "

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the info also to the ref list. At least this means there is no copyright violation with the content I added here and also at

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The incineration of sewage can be quite safe as long as the industrial waste water that causes most problems is separated.

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Agreed. This argument is typically based upon statistical comparison of traditional physical-chemical analyses including

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Tried to reduce some of the focus on the US by providing more information about developing countries, using the book by

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https://web.archive.org/web/20060904172532/http://ironwood.cpe.uchicago.edu/CPE_Workshop/paper/Cain-Rotella-Sept2005.pdf

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I think we should trim down the information on sludge treatment on this page and rather move it to the existing page on

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I work at a 16MGD water reclamation facility, and would be happy to submit photos for the different processes, such as

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but that would involve much duplication, so I'd leave that as an option for the future if it turns out to be necessary.

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and related articles on Knowledge. If you would like to participate, you can choose to edit this article, or visit the

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The general structure of the topic within Knowledge needs clarifying; my moving the bulk of the technical details of

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http://www.environment-agency.gov.uk/business/444304/1290036/1290100/1290353/1294402/1311542/?version=1&lang=_e

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In many other countries, including many quite-wealthy ones, untreated sewage is released directly to surface water.

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http://www.johnrashton.securemachines.co.uk/documentbank/the%20healthy%20city%20and%20the%20ecological%20idea.pdf

2842: 2670: 753: 697: 3669:) I am curious to see how others with an interest in this topic think that this should be handled. Also pinging 3227:

to delete these "External links modified" talk page sections if they want to de-clutter talk pages, but see the

3200: 2358:? Perhaps linking to an industry trade group for an explanation of MBBR would be the better course of action? 2118:

Ah right, thanks. Is the acronym 'PST' in wide spread enough use to include it? At the moment i don't see it.

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The distinction between sewers and sewage treatment is important - the issues and history are quite different.

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should be the main article for the Sewerage topic. It would summarise and link to the appropriate articles for

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There is certainly a need for a reference here but I would suggest putting most of the detail in your existing

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and with the individual articles (where appropriate) referenced from those articles or disambiguation pages.

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I think this article needs cleanup, more interWiki links, and a native English speaker should proof read it.

125: 3262: 3156: 3052: 3011: 2824: 2362:, a nationally recognized industry trade group for wastewater treatment, provides a webcast on the topic of 2055: 1888: 1834: 1814: 1793: 1584:

and others above. I will try and get round to this but it needs a clear head and some careful copy editing.

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be a UK relevant term not widely understood in USA. Maybe we just need to put a redirect in to manage this.

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I see your point. I couldn't see the wood for the trees with all the conventional wastewater tech detail...

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But I do agree with you that this matter is a bit too specialized to be cited in this mainstream article.

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If you have discovered URLs which were erroneously considered dead by the bot, you can report them with

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Circular clarifiers may provide more efficient volume and flow characteristics where space is available.

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https://web.archive.org/web/20130610102220/http://www.pub.gov.sg/about/historyfuture/pages/newater.aspx

3155:. If you have any questions, or need the bot to ignore the links, or the page altogether, please visit 1883: 1400: 1384: 1302:

and "sewage".) Similarly - for consistency and precision since sewage is a subcategory of wastewater -

1204: 1181: 2211: 2031: 1421:" is the most commonly used description among water professionals, although there is a move to using " 253: 232: 3563:

until a consensus is reached, and readers of this page are welcome to contribute to the discussion.

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articles on environment-related topics, as well as to ensure that environment articles are properly

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on Knowledge. If you would like to participate, please visit the project page, where you can join

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on Knowledge. If you would like to participate, please visit the project page, where you can join

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Such as soaps, detergents, and other chemicals used in the laundry room, kitchen, and bathroom?

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before doing mass systematic removals. This message is updated dynamically through the template

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I have delayed further editing because I am uncertain where this is going. I have expanded the

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also treating wastewater from industries or commercial facilities connected to the municipal

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similar: pretty much no sewage treament; sewage collection only in the CBDs of major cities.

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This can mention how sewage are treated inside factories, which is mostly due to regulations.

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01:50, 5 July 2007 (UTC) Was just about to say the same thing. Thanks for taking it out.--

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municipalities. I favor retaining the present name for this article, although I suggest

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You're misrepresenting the source. The source does not use this quote, but has a table.

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water coliform counts are questionable. Another emerging issue is the significance of

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Provided information about how to select the right treatment process for a given case.

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If you found an error with any archives or the URLs themselves, you can fix them with

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isn't well-known enough (despite that currently being the Category); can we settle on

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The following was deleted by User:206.128.209.28 on April 8th - not clear as to why:

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The following was deleted by User:206.128.209.28 on April 8th - not clear as to why:

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despite all my working life regulating sewage works. Possible it is used elsewhere.

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Reduced some content that was repetitive or too detailed if sub-articles existed.

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http://en.wikipedia.org/Sewage_treatment#Sewage_treatment_in_developing_countries

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I have just made quite some changes to the article. What I tried to do is this:

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The attention of those knowledgeable about water treatment would be welcomed at

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http://ironwood.cpe.uchicago.edu/CPE_Workshop/paper/Cain-Rotella-Sept2005.pdf

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I couldn't see any reason for deletion so I have restored the missing text.

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which is getting close to an instruction and grazes uncomfortably close to

3326:. Please also see a variety or articles on waste water treatment including 893:

I added little bit on historical section, but it is far from being enough.

692:) and some terms that are used in it may be different or absent from other 3894: 3863: 3844: 3821: 3789: 3770: 3733: 3646: 3622: 3580: 3536: 3489: 3463: 3448: 3424: 3401: 3377: 3348: 3312: 3276: 3134: 3082: 3064: 3043: 3027: 2997: 2969: 2954: 2932: 2889: 2663: 2644: 2617: 2594: 2576: 2531: 2505: 2465: 2450: 2423: 2397: 2380: 2324: 2309: 2292: 2282:

http://en.wikipedia.org/search/?title=Sewage_treatment&oldid=472802720

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Upper Mill Creek Regional Water Reclamation Facility. Butler County, Ohio.

1963:

Upper Mill Creek Regional Water Reclamation Facility. Butler County, Ohio.

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I have just added more images that were supplied to Wikimedia Commons by

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with a little footnote on what part of the whole treatment process it's

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commons:Commons:Deletion_requests/File:Simple_water_treatment_plant.png

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There's many, many possible ways to extract energy from organic waste.

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I think a quote like that should be avoided for a couple of reasons:

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which is available for free as a pdf file which makes it very handy.

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A wastewater treatment disambiguation page would look something like:

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Almost certainly so. Please feel free to make an appropriate change.

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topic. We need something that straddles both WWT and sewer systems.

3103:"Gold in Faeces 'is worth millions and could save the environment'" 2852:

plant, to remove toxic dissolved organic compounds from wastewater.

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Evaluation, Application and Operation of IFAS and MBBR Technologies

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I am not convinced that this article should be predicated on the '

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Which wealthy countries release untreated sewage to surface water?

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Provided information about some of the low cost treatment methods.

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A wastewater treatment plant disambiguation page might be similar:

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Knowledge:Redirects for discussion/Log/2021 August 25#Crap plant

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might be changed from simple redirects to disambiguation pages.

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should be the main article for treatment aspects, covering both

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Its only been relatively recently that sewage has actually been

802: 607: 1433:" is used to describe the infrastructure to a certain extent. " 1403:? Or do you have an alternative suggestion? Some might suggest 2820:

plant, preparing water from an industrial use for another use.

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didn't have a WWTP until 2001; ironic given the importance of

662: 184: 15: 1294:" as the main article but that doesn't seem right. I suggest 3613:

I have now added all the reviewers comments to the article.

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http://www.pub.gov.sg/about/historyfuture/Pages/NEWater.aspx

2550:"The Historical Development of Wet-Weather Flow Management." 2280:

basins. Hence, perhaps reinstate the infor by reverting to

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rather than just removed and dumped in the nearest river...

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therapy may be high enough to impede sexual development of

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for additional information. I made the following changes:

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maintained, or where the power supply may be intermittent.

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article to include examples of the types of wastewater.

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http://toxics.usgs.gov/highlights/wastewater_fish.html

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Fermentation is a part of anaerobic digestion, namely

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to its own article was intended as a start. I suggest

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A discussion is taking place to address the redirect

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Ive deleted Chemiviron's commercial website link...

497:, a collaborative effort to improve the coverage of 281:, a collaborative effort to improve the coverage of 3709:attraction, sludge transportation, sanitary risks, 3223:using the archive tool instructions below. Editors 1203:or something similar which is very similar to your 3006:Less information on sludge treatment on this page? 2827:, for removing separate phase oil from wastewater. 2561:"Sewage treatment in developing countries" section 1873:An Indonesian's comment on catfish in septic tanks 1629:world this is practiced (and also perhaps why ?). 1369:for a range of categories), but I do believe that 3652:What to do about long sentences with enumerations 2221:What happens to the non-organic soluble materials 718:From "Sewage treatment in developing countries" ( 1009:legislation in driving forward WWT in Europe... 33:for general discussion of the article's subject. 3470:Possible promotion of this article to GA ststus 3368:, e.g. in the lead. This needs to be worked on. 2404:KVDP images - your knowledge would be welcomed. 3936:Knowledge level-4 vital articles in Technology 3590:I am working with an external content expert ( 3300:Proposed name change to "wastewater treatment" 3209:This message was posted before February 2018. 2603:Proposed name change to "wastewater treatment" 1383:Well, perhaps the most correct title would be 174: 8: 4001:Knowledge articles that use American English 3854:. And I can take out those quotation marks. 3835:, again because of the von Sperling book... 3629:Use of images in the article and in the lead 1449:(CFR) regarding the responsibiilties of the 1856:Talk:Catfish#Using catfish in septic tanks. 3594:) to review this article. This is part of 1429:" when referring to facilities. The word " 680:, which has its own spelling conventions ( 548: 459: 332: 227: 3282:Propose Merging with Wastewater Treatment 3147:I have just modified 5 external links on 2299:they are something special or different. 2015: 1960: 897:Historical section is still too limiting. 2511:Origins of Sewage - more details needed? 2014:here is layout of basic UV disinfection 1833:PLEASE have a look at the talk page for 2918:is the top level entity below which is 2541: 2476: 1957: 1908:You want a picture of it I can get it. 1879:Indonesian Knowledge article on catfish 1395:isn't the place, and we've established 550: 461: 390:to improve Knowledge's coverage of the 334: 295:Knowledge:WikiProject Civil engineering 229: 188: 3956:WikiProject Civil engineering articles 3926:Knowledge vital articles in Technology 3807: 3799: 3702: 3685: 3517:history of water supply and sanitation 2910:and I would also add articles such as 2834:, for removing solids from wastewater. 1858:, but it is also of relevance here.) 1312:Sewage - regulation and administration 1207:but perhaps better understood in USA. 298:Template:WikiProject Civil engineering 1996:a vandal made it I'll take it out. -- 1862:which would then be a valid source. 859:Since I appear to be the contributor 700:, this should not be changed without 7: 3966:High-importance Environment articles 3941:B-Class vital articles in Technology 789:residues in human urine and feces. 491:This article is within the scope of 275:This article is within the scope of 3976:High-importance sanitation articles 2871:I concur with you that redirecting 2524:2601:1:9280:155:E1CA:5ABE:F2A2:BCEA 2458:2601:1:9280:155:E1CA:5ABE:F2A2:BCEA 2063:2601:1:9280:155:E1CA:5ABE:F2A2:BCEA 1610:2601:1:9280:155:E1CA:5ABE:F2A2:BCEA 1055:treated (or untreated) wastewater. 218:It is of interest to the following 23:for discussing improvements to the 3713:, soil and subsoil contamination, 2914:and there are probably many more. 2548:Burrian, Steven J., et al. (1999). 2436:microbial electrolysis cells (MEC) 1445:and the resulting portions of the 14: 3332:Agricultural wastewater treatment 3298:Please see the above discussion: 3151:. Please take a moment to review 2912:Agricultural wastewater treatment 1656:Package plants and batch reactors 1170:conventional wastewater treatment 1125:conventional wastewater treatment 422:Knowledge:WikiProject Environment 3921:Knowledge level-4 vital articles 3550: 2982:is the treatment of wastewater. 1210:My main worry was that the tile 1150:significance of the whole thing. 1067:I'm working on an article about 666: 583: 573: 552: 511:Knowledge:WikiProject Sanitation 484: 463: 425:Template:WikiProject Environment 367: 357: 336: 262: 252: 231: 198: 189: 45:Click here to start a new topic. 3981:WikiProject Sanitation articles 3751:The sentence as too difficult ( 3559:. The discussion will occur at 3328:Industrial wastewater treatment 3169:Corrected formatting/usage for 3163:Corrected formatting/usage for 3099:has something to do with this. 2818:Industrial wastewater treatment 2747:Industrial wastewater treatment 1451:Environmental Protection Agency 641:This article has been rated as 531:This article has been rated as 514:Template:WikiProject Sanitation 442:This article has been rated as 315:This article has been rated as 3931:B-Class level-4 vital articles 3277:18:56, 14 September 2017 (UTC) 2759:for return to the environment. 2100:Sewage treatment#Sedimentation 1455:Publicly Owned Treatment Works 1292:Sewage collection and disposal 779:polychlorinated dibenzodioxins 412:and leave any messages at the 1: 3991:High-importance Soil articles 3515:Moved the history content to 3495:Restructuring work (Aug 2021) 2970:16:15, 28 December 2014 (UTC) 2955:10:20, 28 December 2014 (UTC) 2933:04:54, 28 December 2014 (UTC) 2890:01:20, 28 December 2014 (UTC) 2664:21:36, 27 December 2014 (UTC) 2645:20:00, 27 December 2014 (UTC) 2618:18:45, 27 December 2014 (UTC) 2595:22:26, 26 December 2014 (UTC) 2216:01:16, 22 February 2010 (UTC) 2058:) 08:05, 3 October 2008 (UTC) 1944:03:56, 10 February 2007 (UTC) 1850:Using catfish in septic tanks 1602:17:39, 8 September 2005 (UTC) 1512:Rotating biological contactor 1462:17:40, 8 September 2005 (UTC) 1290:. I gather you're proposing " 1227:this term. I would start off 1119:Restructuring of this article 1063:constructed wetlands question 817:maturing in receiving waters. 505:and see a list of open tasks. 289:and see a list of open tasks. 278:WikiProject Civil engineering 42:Put new text under old text. 3961:B-Class Environment articles 3831:. I also have to re-look at 3647:03:35, 14 October 2021 (UTC) 3623:03:35, 14 October 2021 (UTC) 3449:12:23, 30 January 2019 (UTC) 3378:00:55, 18 January 2018 (UTC) 3083:10:39, 14 January 2015 (UTC) 3065:19:41, 13 January 2015 (UTC) 3044:16:40, 13 January 2015 (UTC) 3028:11:43, 13 January 2015 (UTC) 2998:04:31, 30 January 2015 (UTC) 2577:15:19, 9 December 2014 (UTC) 2424:17:21, 31 January 2012 (UTC) 2325:19:31, 26 January 2012 (UTC) 2310:12:00, 26 January 2012 (UTC) 2293:11:50, 26 January 2012 (UTC) 2146:15:21, 8 February 2009 (UTC) 2128:14:36, 8 February 2009 (UTC) 2112:20:12, 5 February 2009 (UTC) 2093:20:00, 5 February 2009 (UTC) 1924:21:39, 5 February 2007 (UTC) 1913:18:31, 5 February 2007 (UTC) 1893:00:30, 31 October 2006 (UTC) 1842:17:41, 5 February 2007 (UTC) 1556:09:16, 12 January 2015 (UTC) 1215:out first - hence my angst! 3971:B-Class sanitation articles 3608:06:20, 6 October 2021 (UTC) 3581:08:13, 25 August 2021 (UTC) 3537:04:48, 25 August 2021 (UTC) 3425:04:44, 25 August 2021 (UTC) 3349:07:01, 2 January 2018 (UTC) 3313:00:57, 2 January 2018 (UTC) 2693:brines, and washwater from 2451:10:47, 5 January 2013 (UTC) 2132:Never heard it used in the 1634:12:54, 3 January 2006 (UTC) 1542:18:56, 6 January 2015 (UTC) 1447:Code of Federal Regulations 1168:; the technical details of 50:New to Knowledge? Welcome! 4017: 3951:Top-importance CE articles 3895:23:31, 10 March 2023 (UTC) 3490:15:05, 29 March 2021 (UTC) 3464:02:41, 29 March 2021 (UTC) 3402:02:39, 29 March 2021 (UTC) 3240:(last update: 5 June 2024) 3144:Hello fellow Wikipedians, 2794:Wastewater treatment plant 2685:, contact and non-contact 2633:wastewater treatment plant 2532:07:04, 15 April 2014 (UTC) 2506:11:07, 19 March 2013 (UTC) 2466:06:55, 15 April 2014 (UTC) 2398:17:26, 27 April 2011 (UTC) 2381:15:20, 27 April 2011 (UTC) 2196:11:20, 13 March 2009 (UTC) 2071:06:53, 15 April 2014 (UTC) 1865:Blog post (and comments): 1754:08:22, 10 April 2006 (UTC) 1618:06:45, 15 April 2014 (UTC) 1025:00:17, 14 March 2006 (UTC) 881:19:35, 13 April 2006 (UTC) 868:21:27, 10 April 2006 (UTC) 855:17:10, 10 April 2006 (UTC) 827:20:07, 16 March 2010 (UTC) 746:13:03, 16 March 2010 (UTC) 647:project's importance scale 621:Knowledge:WikiProject Soil 537:project's importance scale 448:project's importance scale 410:Knowledge:Contributing FAQ 321:project's importance scale 3996:WikiProject Soil articles 3864:16:27, 9 March 2023 (UTC) 3845:10:53, 9 March 2023 (UTC) 3822:22:46, 8 March 2023 (UTC) 3790:18:31, 8 March 2023 (UTC) 3771:19:00, 8 March 2023 (UTC) 3734:18:31, 8 March 2023 (UTC) 3719:groundwater contamination 2843:biochemical oxygen demand 2098:Yes, they are there. See 1806:09:34, 13 July 2010 (UTC) 1776:11:41, 29 June 2006 (UTC) 1744:16:15, 9 April 2006 (UTC) 1702:18:54, 24 July 2007 (UTC) 1692:16:15, 9 April 2006 (UTC) 1588:13:52, 24 Jan 2005 (UTC) 1577:04:44, 24 Jan 2005 (UTC) 1411:07:23, 17 Jan 2005 (UTC) 1314:should be become part of 1201:Sewage treatment industry 1111:14:23, 18 Dec 2004 (UTC) 1059:18:48, 23 Nov 2004 (UTC) 1051:18:34, 23 Nov 2004 (UTC) 998:20:36, 23 Nov 2004 (UTC) 977:10:00, 23 Sep 2004 (UTC) 962:Untreated sewage disposal 958:18:48, 26 Nov 2004 (UTC) 950:12:24, 26 Nov 2004 (UTC) 928:10:44, 23 Sep 2004 (UTC) 913:09:55, 23 Sep 2004 (UTC) 754:biochemical oxygen demand 640: 624:Template:WikiProject Soil 568: 530: 479: 441: 352: 314: 247: 226: 80:Be welcoming to newcomers 3806:. Perhaps better to say 3585: 3545:Redirects for discussion 2333:Process overview section 2267:21:59, 18 May 2010 (UTC) 2246:20:27, 18 May 2010 (UTC) 2040:07:30, 1 June 2008 (UTC) 2005:01:54, 5 July 2007 (UTC) 1992:01:41, 5 July 2007 (UTC) 1978:05:46, 15 May 2007 (UTC) 1826:12:03, 5 July 2006 (UTC) 1785:16:15, 9 July 2006 (UTC) 1716:Thermal depolymerization 1707:Thermal depolymerization 1650:09:19, 3 July 2006 (UTC) 1379:23:38, 16 Jan 2005 (UTC) 1278:17:58, 5 Jan 2005 (UTC) 1257:10:56, 3 Jan 2005 (UTC) 1219:09:51, 2 Jan 2005 (UTC) 1192:14:38, 1 Jan 2005 (UTC) 1094:22:17, 9 Dec 2004 (UTC) 1087:16:07, 9 Dec 2004 (UTC) 1075:00:52, 9 Dec 2004 (UTC) 605:, which collaborates on 3715:surface water pollution 3543:"Crap plant" listed at 3411:that already exists at 3140:External links modified 3135:15:23, 4 May 2015 (UTC) 3053:sewage sludge treatment 3012:sewage sludge treatment 2825:API oil-water separator 2515:"Communities that have 2161:00:16, 3 May 2010 (UTC) 1835:Sewage sludge treatment 1815:Sewage sludge treatment 1794:Mixed acid fermentation 1735:municipal applications. 1427:water pollution control 1322:14:23, 7 Jan 2005 (UTC) 1264:15:54, 5 Jan 2005 (UTC) 1246:23:38, 2 Jan 2005 (UTC) 1239:23:34, 2 Jan 2005 (UTC) 1013:15:58, 5 Jan 2005 (UTC) 985:04:44, 9 Nov 2004 (UTC) 599:is within the scope of 387:WikiProject Environment 384:article is part of the 3916:B-Class vital articles 3474:There is a discussion 2803:sewage treatment plant 2675:irrigation return flow 2171:Fluidized bed reactors 1624:Use of Alum coagulants 1453:(USEPA). The term is " 1359:Organic waste treament 1341:or any similar title. 758:total suspended solids 728: 494:WikiProject Sanitation 394:. The aim is to write 75:avoid personal attacks 3986:B-Class Soil articles 1363:Toxic waste treatment 1164:(sewage), as well as 724: 615:for more information. 591:Earth sciences portal 205:level-4 vital article 100:Neutral point of view 3658:book by von Sperling 3409:wastewater treatment 3389:wastewater treatment 3336:Wastewater treatment 3288:wastewater treatment 3221:regular verification 2920:Wastewater treatment 2873:wastewater treatment 2739:Wastewater treatment 2681:, steam condensate, 2629:wastewater treatment 2352:Conflict of Interest 2201:Process Flow Diagram 1867:Ikan lele technology 1419:wastewater treatment 1345:is just one form of 1308:wastewater treatment 1154:Wastewater treatment 1140:wastewater treatment 1069:constructed wetlands 714:Environmental impact 698:relevant style guide 694:varieties of English 428:Environment articles 105:No original research 3946:B-Class CE articles 3635:Marcos Von Sperling 3592:Marcos Von Sperling 3586:Reviewer's comments 3525:Marcos Von Sperling 3211:After February 2018 2441:mention in article 2354:? Specifically, a 2344:Veolia/ AnoxKaldnes 1766:Anaerobic Digestion 1667:North Liberty, Iowa 1529:secondary treatment 1507:Membrane bioreactor 1502:Constructed wetland 1497:Aerobic granulation 1351:Wastewater treament 1339:wastewater industry 1316:wastewater industry 1306:should be moved to 1296:wastewater industry 1229:Wastewater industry 1080:constructed wetland 787:pharmaceutical drug 696:. According to the 517:sanitation articles 382:environment-related 3265:InternetArchiveBot 3216:InternetArchiveBot 1854:(I posted this to 1353:that had links to 1286:just redirects to 375:Environment portal 270:Engineering portal 214:content assessment 86:dispute resolution 47: 3711:air contamination 3579: 3241: 3095:Perhaps imbibing 2850:carbon filtration 2699:textile bleaching 2340:Headworks Bio Inc 2249: 2234:Consuelo D'Guiche 2232:comment added by 2050:comment added by 2018:File:UVlayout.pdf 1891: 1720:hydrous pyrolysis 1423:water reclamation 1401:wastewater sector 1385:wastewater sector 1231:as a redirect to 1205:Sewerage industry 1182:Sewerage industry 1090:Right-o. Will do. 793:levels from oral 736:comment added by 708: 707: 661: 660: 657: 656: 653: 652: 547: 546: 543: 542: 458: 457: 454: 453: 414:project talk page 331: 330: 327: 326: 292:Civil engineering 283:Civil engineering 239:Civil engineering 183: 182: 66:Assume good faith 43: 4008: 3893: 3820: 3569: 3567: 3554: 3488: 3413:sewage treatment 3347: 3292:sewage treatment 3275: 3266: 3239: 3238: 3217: 3149:Sewage treatment 3133: 3123:7&6=thirteen 3119: 3117: 3115: 3101:Devlin, Hannah. 2990: 2931: 2841:, to reduce the 2839:trickling filter 2753:Sewage treatment 2553: 2546: 2484: 2481: 2396: 2379: 2308: 2275:Settling chamber 2265: 2248: 2226: 2059: 2021: 2019: 1966: 1964: 1887: 1517:Trickling filter 1487:Activated sludge 1393:Sewage treatment 1371:Sewage treatment 1355:Sewage treatment 1304:sewage treatment 1288:sewage treatment 1212:Sewage Treatment 992:Sphaerotilus spp 833:Process Sequence 764:, and dissolved 748: 677:American English 673:This article is 670: 663: 629: 628: 625: 622: 619: 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water 2017: 2012: 2010:UV Disinfection 1985: 1970: 1967: 1962: 1900: 1852: 1818: 1768: 1709: 1658: 1626: 1594: 1570: 1443:Clean Water Act 1300:sewage industry 1121: 1100: 1065: 1047:can be severe. 1035: 981:Stupid ones? -- 964: 891: 835: 731: 716: 702:broad consensus 643:High-importance 626: 623: 620: 617: 616: 589: 584: 582: 563:High‑importance 562: 533:High-importance 516: 513: 510: 507: 506: 474:High‑importance 473: 444:High-importance 427: 424: 421: 418: 417: 400:well-referenced 373: 366: 347:High‑importance 346: 300: 297: 294: 291: 290: 268: 261: 241: 212:on Knowledge's 209: 199: 121: 116: 115: 114: 91: 61: 12: 11: 5: 4014: 4012: 4004: 4003: 3998: 3993: 3988: 3983: 3978: 3973: 3968: 3963: 3958: 3953: 3948: 3943: 3938: 3933: 3928: 3923: 3918: 3908: 3907: 3904: 3903: 3902: 3901: 3900: 3899: 3898: 3897: 3871: 3870: 3869: 3868: 3867: 3866: 3847: 3775: 3774: 3773: 3758: 3757: 3756: 3749: 3746: 3743: 3667:WP:NOTTEXTBOOK 3653: 3650: 3630: 3627: 3626: 3625: 3587: 3584: 3547: 3541: 3540: 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