Microbial reduction in wastewater treatment using Fe3+ and Al3+ coagulants and PAA disinfectant
Wastewater is an important source of pathogenic enteric microorganisms in surface water and a major contaminating agent of drinking water. Although primary and secondary wastewater treatments reduce the numbers of microorganisms in wastewater, significant numbers of microbes can still be present in...
| Main Authors: | , , , , , , , , |
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| Format: | Journal Article |
| Language: | Inglés |
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IWA Publishing
2013
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| Subjects: | |
| Online Access: | https://hdl.handle.net/10568/40297 |
| _version_ | 1855536565359476736 |
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| author | Pradhan, Surendra K. Kauppinen, A. Martikainen, K. Pitkanen, T. Kusnetsov, J. Miettinen, I.T. Pessi, M. Poutiainen, H. Heinonen-Tanski, H. |
| author_browse | Heinonen-Tanski, H. Kauppinen, A. Kusnetsov, J. Martikainen, K. Miettinen, I.T. Pessi, M. Pitkanen, T. Poutiainen, H. Pradhan, Surendra K. |
| author_facet | Pradhan, Surendra K. Kauppinen, A. Martikainen, K. Pitkanen, T. Kusnetsov, J. Miettinen, I.T. Pessi, M. Poutiainen, H. Heinonen-Tanski, H. |
| author_sort | Pradhan, Surendra K. |
| collection | Repository of Agricultural Research Outputs (CGSpace) |
| description | Wastewater is an important source of pathogenic enteric microorganisms in surface water and a major contaminating agent of drinking water. Although primary and secondary wastewater treatments reduce the numbers of microorganisms in wastewater, significant numbers of microbes can still be present in the effluent. The aim of this study was to test the feasibility of tertiary treatment for municipal wastewater treatment plants (WWTPs) using PIX (FeCl3) or PAX (AlCl3) coagulants and peracetic acid (PAA) the disinfectant to reduce microbial load in effluent. Our study showed that both PIX and PAX efficiently reduced microbial numbers. PAA disinfection greatly reduced the numbers of culturable indicator microorganisms (Escherichia coli, intestinal enterococci, F-specific RNA coliphages and somatic DNA coliphages). In addition, pathogenic microorganisms, thermotolerant Campylobacter, Salmonella and norovirus GI, were successfully reduced using the tertiary treatments. In contrast, clostridia, Legionella, rotavirus, norovirus GII and adenovirus showed better resistance against PAA compared to the other microorganisms. However, interpretation of PCR analysis results will need further studies to clarify the infectivity of the pathogenic microbes. In conclusion, PIX and PAX flocculants followed by PAA disinfectant can be used as a tertiary treatment for municipal WWTP effluents to reduce the numbers of indicator and pathogenic microorganisms. |
| format | Journal Article |
| id | CGSpace40297 |
| institution | CGIAR Consortium |
| language | Inglés |
| publishDate | 2013 |
| publishDateRange | 2013 |
| publishDateSort | 2013 |
| publisher | IWA Publishing |
| publisherStr | IWA Publishing |
| record_format | dspace |
| spelling | CGSpace402972025-06-17T08:24:10Z Microbial reduction in wastewater treatment using Fe3+ and Al3+ coagulants and PAA disinfectant Pradhan, Surendra K. Kauppinen, A. Martikainen, K. Pitkanen, T. Kusnetsov, J. Miettinen, I.T. Pessi, M. Poutiainen, H. Heinonen-Tanski, H. wastewater treatment drinking water microorganisms campylobacter salmonella norovirus coagulants peracetic acid Wastewater is an important source of pathogenic enteric microorganisms in surface water and a major contaminating agent of drinking water. Although primary and secondary wastewater treatments reduce the numbers of microorganisms in wastewater, significant numbers of microbes can still be present in the effluent. The aim of this study was to test the feasibility of tertiary treatment for municipal wastewater treatment plants (WWTPs) using PIX (FeCl3) or PAX (AlCl3) coagulants and peracetic acid (PAA) the disinfectant to reduce microbial load in effluent. Our study showed that both PIX and PAX efficiently reduced microbial numbers. PAA disinfection greatly reduced the numbers of culturable indicator microorganisms (Escherichia coli, intestinal enterococci, F-specific RNA coliphages and somatic DNA coliphages). In addition, pathogenic microorganisms, thermotolerant Campylobacter, Salmonella and norovirus GI, were successfully reduced using the tertiary treatments. In contrast, clostridia, Legionella, rotavirus, norovirus GII and adenovirus showed better resistance against PAA compared to the other microorganisms. However, interpretation of PCR analysis results will need further studies to clarify the infectivity of the pathogenic microbes. In conclusion, PIX and PAX flocculants followed by PAA disinfectant can be used as a tertiary treatment for municipal WWTP effluents to reduce the numbers of indicator and pathogenic microorganisms. 2013-12-01 2014-06-13T14:47:20Z 2014-06-13T14:47:20Z Journal Article https://hdl.handle.net/10568/40297 en Open Access IWA Publishing Pradhan, Surendra K.; Kauppinen, A.; Martikainen, K.; Pitkanen, T.; Kusnetsov, J.; Miettinen, I. T.; Pessi, M.; Poutiainen, H.; Heinonen-Tanski, H. 2013. Microbial reduction in wastewater treatment using Fe3+ and Al3+ coagulants and PAA disinfectant. Journal of Water and Health, 10p. (Online first). doi: https://doi.org/10.2166/wh.2013.241 |
| spellingShingle | wastewater treatment drinking water microorganisms campylobacter salmonella norovirus coagulants peracetic acid Pradhan, Surendra K. Kauppinen, A. Martikainen, K. Pitkanen, T. Kusnetsov, J. Miettinen, I.T. Pessi, M. Poutiainen, H. Heinonen-Tanski, H. Microbial reduction in wastewater treatment using Fe3+ and Al3+ coagulants and PAA disinfectant |
| title | Microbial reduction in wastewater treatment using Fe3+ and Al3+ coagulants and PAA disinfectant |
| title_full | Microbial reduction in wastewater treatment using Fe3+ and Al3+ coagulants and PAA disinfectant |
| title_fullStr | Microbial reduction in wastewater treatment using Fe3+ and Al3+ coagulants and PAA disinfectant |
| title_full_unstemmed | Microbial reduction in wastewater treatment using Fe3+ and Al3+ coagulants and PAA disinfectant |
| title_short | Microbial reduction in wastewater treatment using Fe3+ and Al3+ coagulants and PAA disinfectant |
| title_sort | microbial reduction in wastewater treatment using fe3 and al3 coagulants and paa disinfectant |
| topic | wastewater treatment drinking water microorganisms campylobacter salmonella norovirus coagulants peracetic acid |
| url | https://hdl.handle.net/10568/40297 |
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