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175:. Disinfection and dechlorination is the final step of the wastewater treatment process. Disinfected wastewater may be discharged either to Humboldt Bay or to enhancement marshes. Enhancement marshes purify the wastewater and provide wetland habitat. Enhancement marsh effluent is disinfected to improve
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The City of Arcata generates an average volume of 2.3 million US gallons (8,700 m) of sewage per day. Winter rainfall onto treatment ponds and marshes increases the volume of effluent discharged from the wetland treatment system to as much as 16.5 million US gallons (62,000 m) per
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to be no greater than 30 mg/L, with an additional requirement for removal of 85 percent of the quantities measured in untreated sewage from the City of Arcata. Unfortunately, when measuring concentrations leaving treatment wetlands, neither of these analytical methods can distinguish between
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who were instrumental in the creation of the Arcata Marsh. In 1969 Allen also started an aquaculture project at the marsh to raise salmonids in mixtures of sea water and partially treated wastewater. Despite being effectively a sewer, the series of open-air lakes do not have an odor, and are a
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that contains exhibits about the operations of the treatment plant, the importance of the marsh, and about the plants and animals that live there. Volunteer docents give tours of the marsh. Education programs are offered for school, scout and other groups, as well as summer camp programs.
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via complex flow routing through a number of contiguous ponds, wetlands, and marshes. Resemblance of treatment features to natural bay environments may cause potential ambiguity about where wastewater ceases to be considered partially treated sewage and meets enhancement objectives of the
211:. Individuals who value wetland environments may not realize the effluent characteristics necessary for release of treated wastewater to Humboldt Bay. Although there is no evidence of harm to wildlife, some regulators suggest potential risk to wildlife using
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because of an absence of significant research on wildlife exposure to partially treated effluent and to potential accumulation of chemicals being removed from effluent in wetland treatment processes. Ongoing research at
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changes from birds using tertiary treatment enhancement marsh habitat. After leaving the treatment wetlands the effluent is mixed with water returning from the enhancement marshes. Wild bird
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similar to those found in human sewage. Recreational access is limited to areas where effluent has received secondary treatment and disinfection.
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Disinfection: Tertiary effluent is chlorinated to kill pathogens from bird droppings and dechlorinated to avoid damage to natural environments.
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71:. Numerous holding pools in the marsh, called "lakes," are named after donors and citizens who helped start the marsh project, including
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142:(competed in 1986): Disinfected secondary effluent is put into artificial marshes where it is cleansed by reeds, cattails, and bacteria.
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63:. The Arcata Marsh is a popular destination for birders. The marsh has been awarded the Innovations in Government award from the
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originally arriving in sewage, or detritus of decomposing wetland vegetation; so the limitations may apply to the sum of both.
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123:(completed in 1949): Sewage is held in sedimentation tanks where the sludge is removed and processed for use as fertilizer.
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Wetland plants use the energy of sunlight to produce five to ten times as much carbohydrate biomass per acre as a
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129:(completed in 1957): Primary effluent is pumped into oxidation ponds (here bacteria break down the waste).
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453:"USA - California (Arcata) - Constructed Wetland: A Cost-Effective Alternative for Wastewater Treatment"
474:"Arcata Wastewater Treatment Plant & Arcata Marsh and Wildlife Sanctuary - Enhancement Marshes"
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171:. Treatment wetlands improve oxidation pond effluent quality to meet the federal definition of
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Arcata, California -- A Natural System for
Wastewater Reclamation and Resource Enhancement
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640:"Waste Discharge Requirements for City of Arcata Municipal Wastewater Treatment Facility"
615:"Waste Discharge Requirements for City of Arcata Municipal Wastewater Treatment Facility"
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The Arcata Marsh and
Wildlife Sanctuary encompasses 307 acres of land situated along the
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554:"Arcata's Wastewater Treatment Plant & The Arcata Marsh and Wildlife Sanctuary"
428:"Arcata's Wastewater Treatment Plant & The Arcata Marsh and Wildlife Sanctuary"
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Arcata
Wastewater Treatment Plant & Arcata Marsh and Wildlife Sanctuary - Birds
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253:. Over 327 species of birds have been recorded at the sanctuary. Numerous plant,
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Water
Quality Control Policy for the Enclosed Bays and Esuaries of California
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Disinfection (completed in 1966): Secondary effluent is chlorinated to kill
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404:(2000) United States Environmental Protection Agency pp.18,61&139
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506:. National Oceanic and Atmospheric Administration. Archived from
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minimizes potential risk to
Humboldt Bay wetlands and wildlife.
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Manual: Constructed
Wetlands Treatment of Municipal Wastewaters
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regulations require monthly average effluent concentrations of
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are used to filter sewage waste. The marshes also serve as a
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Standard
Methods for the Examination of Water and Wastewater
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U.S. Environmental
Protection Agency (EPA). Washington, DC.
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Sewage from the city of Arcata is treated and released to
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and dechlorinated to avoid damage to natural environments.
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from decomposing wetlands vegetation forms the base of a
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Arcata
Wastewater Treatment Plant and Wildlife Sanctuary
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Cal Poly
Humboldt - Arcata Marsh and Wildlife Sanctuary
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14th Edition (1976) American Public Health Association
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City of Arcata - Arcata Marsh & Wildlife Sanctuary
531:. California Natural Resources Agency. Archived from
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City of Arcata - Arcata Marsh and Wildlife Sanctuary
313:The Friends of the Arcata Marsh (FOAM) operate the
163:. The wastewater treatment system includes both
226:National Pollutant Discharge Elimination System
806:Protected areas of Humboldt County, California
577:United States Environmental Protection Agency
372:"The Arcata Wastewater Plant Process Overview"
8:
556:. Humboldt State University. Archived from
430:. Humboldt State University. Archived from
374:. Humboldt State University. Archived from
191:Conventional pollutants or wetland detritus
776:Wildlife sanctuaries of the United States
273:species inhabit the marsh. These include
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103:View over southern end of Arcata Marsh.
791:Museums in Humboldt County, California
714:Appropedia.org - Arcata Marsh Overview
801:Natural history museums in California
766:Sewage treatment plants in California
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413:State Water Resources Control Board
161:California Bays and Estuaries Policy
816:Protected areas established in 1949
18:Arcata Marsh and Wildlife Sanctuary
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811:1949 establishments in California
592:"Secondary Treatment Regulation."
207:for aquatic organisms, birds and
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315:Arcata Marsh Interpretive Center
309:Arcata Marsh Interpretive Center
529:"California's Coastal Wetlands"
455:. The EcoTipping Points Project
116:process takes place in stages:
27:Facility in Arcata, California
1:
771:Nature reserves in California
47:A series of oxidation ponds,
796:Nature centers in California
602:Code of Federal Regulations,
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786:Waste treatment technology
417:(1995) State of California
230:biochemical oxygen demand
150:Treatment and enhancement
737:40.858341°N 124.090728°W
84:popular destination for
40:employed by the city of
239:conventional pollutants
742:40.858341; -124.090728
303:red-sided garter snake
234:total suspended solids
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69:Harvard Kennedy School
645:. State of California
620:. State of California
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781:Constructed wetlands
674:pp.89-95&543-544
733: /
400:Oppelt, E. Timothy
173:secondary treatment
169:enhancement marshes
127:Secondary Treatment
81:Robert A. Gearheart
761:Arcata, California
662:Franson, Mary Ann
597:2011-07-21 at the
358:2008-05-13 at the
340:2010-10-17 at the
213:treatment wetlands
165:treatment wetlands
140:Tertiary Treatment
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49:treatment wetlands
42:Arcata, California
478:www2.humboldt.edu
218:Cal Poly Humboldt
185:coliform bacteria
121:Primary Treatment
73:Cal Poly Humboldt
59:, and are on the
38:management system
33:is an innovative
16:(Redirected from
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380:. Retrieved
376:the original
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275:river otters
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156:Humboldt Bay
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86:birdwatching
77:George Allen
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740: /
728:124°05′27″W
75:professors
755:Categories
725:40°51′30″N
649:2011-02-27
564:2011-02-27
539:2011-03-02
514:2011-03-01
459:2011-03-02
438:2011-03-01
382:2011-02-24
322:References
279:gray foxes
237:unremoved
205:food chain
271:amphibian
134:pathogens
595:Archived
356:Archived
338:Archived
245:Wildlife
201:Detritus
183:contain
624:1 March
267:reptile
232:and of
209:mammals
199:field.
94:jogging
90:cycling
53:marshes
670:
581:(1993)
488:25 May
291:bobcat
263:insect
255:mammal
643:(PDF)
618:(PDF)
224:day.
197:wheat
181:feces
35:sewer
668:ISBN
626:2016
490:2022
301:and
269:and
259:fish
167:and
112:The
92:and
79:and
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391:^
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