PMID: 11317902Apr 25, 2001Paper

Fate of indicator microorganisms, Giardia and Cryptosporidium in subsurface flow constructed wetlands

Water Research
J A ThurstonM M Karpiscak

Abstract

Limited information is available on the ability of subsurface flow wetlands to remove enteric pathogens. Two multi-species wetlands, one receiving secondary sewage effluent and the other potable (disinfected) groundwater were studied from February 1995 to August 1996, at the Pima County Constructed Ecosystems Research Facility in Tucson, Arizona. Each wetland had a retention time of approximately 4 days. The objectives of this study were (1) to evaluate the ability of multi-species subsurface wetlands to physically remove Giardia cysts; Cryptosporidium oocysts, total and fecal coliforms, and coliphages; and (2) to determine the likely impact of local wildlife on the occurrence of these indicators and pathogens. In the wetland receiving secondary sewage effluent, total coliforms were reduced by an average of 98.8% and fecal coliforms by 98.2%. Coliphage were reduced by an average of 95.2%. Both Giardia cysts and Cryptosporidium oocysts were reduced by an average of 87.8 and 64.2%, respectively. In the wetland receiving disinfected groundwater, an average of 1.3 x 10(2) total coliforms/100 mL and 22.3 fecal coliforms/100 mL were most likely contributed by both flora and fauna. No parasites or coliphages were detected.

References

Apr 1, 1987·Applied and Environmental Microbiology·R M GersbergB V Elkins

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Citations

Apr 4, 2009·Parasitology Research·Thaddeus K GraczykAlexandre J Dasilva
Dec 21, 2006·Environmental Monitoring and Assessment·Jongho WonHeechul Choi
Apr 3, 2007·Transactions of the Royal Society of Tropical Medicine and Hygiene·Thaddeus K Graczyk, Frances E Lucy
May 7, 2011·International Journal of Environmental Health Research·Lucia Bonadonna, Rossella Briancesco
Aug 28, 2003·Journal of Environmental Science and Health. Part A, Toxic/hazardous Substances & Environmental Engineering·Rita L NokesMartin M Karpiscak
May 5, 2009·Applied and Environmental Microbiology·Thaddeus K GraczykHui-Wen A Cheng
Mar 20, 2010·Canadian Journal of Microbiology·Annie LocasPierre Payment
Mar 4, 2014·Journal of Environmental Health Science & Engineering·Behrooz KarimiHossin Jabary
Dec 17, 2009·Journal of Environmental Sciences (China)·Qiaohong ZhouZhenbin Wu
Apr 1, 2008·The Science of the Total Environment·Roberto ReinosoEloy Bécares
Apr 19, 2007·The Science of the Total Environment·Kirsten SleytrRaimund Haberl
May 9, 2012·Journal of Applied Microbiology·A M NasserM Revhun
Sep 24, 2015·The Science of the Total Environment·Shubiao WuRenjie Dong
Jun 25, 2014·Environmental Technology·Fabiana F AvelarAlisson C Borges
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Jan 17, 2012·Journal of Environmental Science and Health. Part A, Toxic/hazardous Substances & Environmental Engineering·Rahzia Hendricks, Edmund John Pool
Feb 19, 2002·Journal of Food Protection·Jeanette A Thurston-EnriquezCharles P Gerba
Jun 7, 2011·Journal of Environmental Science and Health. Part A, Toxic/hazardous Substances & Environmental Engineering·Laurence W GillPaul M Johnston
Mar 2, 2018·The Science of the Total Environment·S Arden, X Ma
Aug 10, 2021·Philosophical Transactions of the Royal Society of London. Series B, Biological Sciences·Kun ChengGenxing Pan

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