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Antibiotic resistance genes in municipal wastewater treatment systems and receiving waters in Arctic Canada.

https://arctichealth.org/en/permalink/ahliterature294222
Source
Sci Total Environ. 2017 Nov 15; 598:1085-1094
Publication Type
Journal Article
Date
Nov-15-2017
Author
Kara D Neudorf
Yan Nan Huang
Colin M Ragush
Christopher K Yost
Rob C Jamieson
Lisbeth Truelstrup Hansen
Author Affiliation
Department of Process Engineering and Applied Science, Dalhousie University, 1360 Barrington Street, Halifax B3H 4R2, Canada.
Source
Sci Total Environ. 2017 Nov 15; 598:1085-1094
Date
Nov-15-2017
Language
English
Publication Type
Journal Article
Keywords
Anti-Bacterial Agents
Drug Resistance, Bacterial - genetics
Environmental monitoring
Genes, Bacterial
Nunavut
Waste Water - microbiology
Abstract
Domestic wastewater discharges may adversely impact arctic ecosystems and local indigenous people, who rely on being able to hunt and harvest food from their local environment. Therefore, there is a need to develop efficient wastewater treatment plants (WWTPs), which can be operated in remote communities under extreme climatic conditions. WWTPs have been identified as reservoirs of antibiotic resistance genes (ARGs). The objective of this work was to quantify the presence of nine different ARG markers (int1, sul1, sul2, tet(O), erm(B), mecA, blaCTX-M, blaTEM, and qnr(S)) in two passive systems (waste stabilization ponds [WSPs]) and one mechanical filtration plant operating in two smaller and one large community, respectively, in Nunavut, Canada. Measurement of water quality parameters (carbonaceous oxygen demand, ammonia, total suspended solids, Escherichia coli and total coliforms) showed that the WWTPs provided only primary treatment. Low levels of the ARGs (2logcopies/mL) were observed in the effluent, demonstrating that bacteria residing in three northern WWTPs harbour ARGs conferring resistance to multiple clinically-relevant classes of antibiotics. Our results indicate that long-term storage in WSPs benefitted removal of organic material and some ARGs. However, one WSP system showed evidence of the enrichment of sul1, sul2, mecA, tet(O) and qnr(S). Further research is needed to fully understand if these ARG releases pose a risk to human health, especially in the context of traditional hunting and fishing activities.
PubMed ID
28482456 View in PubMed
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Antibiotic resistance genes in municipal wastewater treatment systems and receiving waters in Arctic Canada.

https://arctichealth.org/en/permalink/ahliterature282398
Source
Sci Total Environ. 2017 May 02;598:1085-1094
Publication Type
Article
Date
May-02-2017
Author
Kara D Neudorf
Yan Nan Huang
Colin M Ragush
Christopher K Yost
Rob C Jamieson
Lisbeth Truelstrup Hansen
Source
Sci Total Environ. 2017 May 02;598:1085-1094
Date
May-02-2017
Language
English
Publication Type
Article
Abstract
Domestic wastewater discharges may adversely impact arctic ecosystems and local indigenous people, who rely on being able to hunt and harvest food from their local environment. Therefore, there is a need to develop efficient wastewater treatment plants (WWTPs), which can be operated in remote communities under extreme climatic conditions. WWTPs have been identified as reservoirs of antibiotic resistance genes (ARGs). The objective of this work was to quantify the presence of nine different ARG markers (int1, sul1, sul2, tet(O), erm(B), mecA, blaCTX-M, blaTEM, and qnr(S)) in two passive systems (waste stabilization ponds [WSPs]) and one mechanical filtration plant operating in two smaller and one large community, respectively, in Nunavut, Canada. Measurement of water quality parameters (carbonaceous oxygen demand, ammonia, total suspended solids, Escherichia coli and total coliforms) showed that the WWTPs provided only primary treatment. Low levels of the ARGs (2logcopies/mL) were observed in the effluent, demonstrating that bacteria residing in three northern WWTPs harbour ARGs conferring resistance to multiple clinically-relevant classes of antibiotics. Our results indicate that long-term storage in WSPs benefitted removal of organic material and some ARGs. However, one WSP system showed evidence of the enrichment of sul1, sul2, mecA, tet(O) and qnr(S). Further research is needed to fully understand if these ARG releases pose a risk to human health, especially in the context of traditional hunting and fishing activities.
PubMed ID
28482456 View in PubMed
Less detail

Disinfection and removal of human pathogenic bacteria in arctic waste stabilization ponds.

https://arctichealth.org/en/permalink/ahliterature297766
Source
Environ Sci Pollut Res Int. 2018 Nov; 25(33):32881-32893
Publication Type
Journal Article
Date
Nov-2018
Author
Yannan Huang
Lisbeth Truelstrup Hansen
Colin M Ragush
Rob C Jamieson
Author Affiliation
Centre for Water Resources Studies, Dalhousie University, Halifax, NS, B3H 4R2, Canada.
Source
Environ Sci Pollut Res Int. 2018 Nov; 25(33):32881-32893
Date
Nov-2018
Language
English
Publication Type
Journal Article
Keywords
Bacteria
Disinfection - methods
Environmental Biomarkers
Escherichia coli
Feces - microbiology
Humans
Listeria monocytogenes
Nunavut
Ponds - microbiology
Salmonella
Seasons
Waste Disposal, Fluid - methods
Waste Water - microbiology
Water Microbiology
Abstract
Wastewater stabilization ponds (WSPs) are commonly used to treat municipal wastewater in Arctic Canada. The biological treatment in the WSPs is strongly influenced by climatic conditions. Currently, there is limited information about the removal of fecal and pathogenic bacteria during the short cool summer treatment season. With relevance to public health, the objectives of this paper were to determine if treatment in arctic WSPs resulted in the disinfection (i.e., removal of fecal indicator bacteria, Escherichia coli) and removal of selected human bacterial pathogens from the treated effluent. The treatment performance, with focus on microbial removal, was assessed for the one-cell WSP in Pond Inlet (Nunavut [NU]) and two-cell WSP in Clyde River (NU) over three consecutive (2012-2014) summer treatment seasons (late June-early September). The WSPs provided a primary disinfection treatment of the wastewater with a 2-3 Log removal of generic indicator E. coli. The bacterial pathogens Salmonella spp., pathogenic E. coli, and Listeria monocytogenes, but not Campylobacter spp. and Helicobacter pylori, were detected in the untreated and treated wastewater, indicating that human pathogens were not reliably removed. Seasonal and annual variations in temperature significantly (p 
PubMed ID
28353112 View in PubMed
Less detail

Disinfection and removal of human pathogenic bacteria in arctic waste stabilization ponds.

https://arctichealth.org/en/permalink/ahliterature281067
Source
Environ Sci Pollut Res Int. 2017 Mar 29;
Publication Type
Article
Date
Mar-29-2017
Author
Yannan Huang
Lisbeth Truelstrup Hansen
Colin M Ragush
Rob C Jamieson
Source
Environ Sci Pollut Res Int. 2017 Mar 29;
Date
Mar-29-2017
Language
English
Publication Type
Article
Abstract
Wastewater stabilization ponds (WSPs) are commonly used to treat municipal wastewater in Arctic Canada. The biological treatment in the WSPs is strongly influenced by climatic conditions. Currently, there is limited information about the removal of fecal and pathogenic bacteria during the short cool summer treatment season. With relevance to public health, the objectives of this paper were to determine if treatment in arctic WSPs resulted in the disinfection (i.e., removal of fecal indicator bacteria, Escherichia coli) and removal of selected human bacterial pathogens from the treated effluent. The treatment performance, with focus on microbial removal, was assessed for the one-cell WSP in Pond Inlet (Nunavut [NU]) and two-cell WSP in Clyde River (NU) over three consecutive (2012-2014) summer treatment seasons (late June-early September). The WSPs provided a primary disinfection treatment of the wastewater with a 2-3 Log removal of generic indicator E. coli. The bacterial pathogens Salmonella spp., pathogenic E. coli, and Listeria monocytogenes, but not Campylobacter spp. and Helicobacter pylori, were detected in the untreated and treated wastewater, indicating that human pathogens were not reliably removed. Seasonal and annual variations in temperature significantly (p 
PubMed ID
28353112 View in PubMed
Less detail