Efficiency of biological treatment for the removal of total and thermotolerant coliform bacteria from domestic sewage
Researchers around the world have focused their efforts on devising combinations of technologies that are not only economically feasible but also effective in mitigating the impacts caused by wastes containing pathogens that pose potential risks to human and animal health. The purpose of this study...
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| Format: | Article |
| Language: | English |
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Universidade Federal de Uberlândia
2016-12-01
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| Series: | Bioscience Journal |
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| Online Access: | https://seer-dev.ufu.br/index.php/biosciencejournal/article/view/33292 |
| _version_ | 1818287853462880256 |
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| author | Paula Maria Pilotto Branco Ricardo Galbiatti Sandoval Nogueira Lívia Maria Soares Ferreira Luiz Augusto do Amaral Jorge de Lucas Júnior |
| author_facet | Paula Maria Pilotto Branco Ricardo Galbiatti Sandoval Nogueira Lívia Maria Soares Ferreira Luiz Augusto do Amaral Jorge de Lucas Júnior |
| author_sort | Paula Maria Pilotto Branco |
| collection | DOAJ |
| description | Researchers around the world have focused their efforts on devising combinations of technologies that are not only economically feasible but also effective in mitigating the impacts caused by wastes containing pathogens that pose potential risks to human and animal health. The purpose of this study was to evaluate the performance of a biological treatment system for removing total and thermotolerant coliform bacteria with a view to the possible organic recycling of domestic sewage. To this end, a tubular continuous flow anaerobic digester, with hydraulic retention time (HRT) of 25 days and an optional stabilization pond, were used to treat the sewage produced by 150 people in the municipality of Sertãozinho, SP, Brazil. The samples were collected weekly, always on the same day, at three different sampling points (inlet of the treatment system, the outlet of tubular digester, and the optional stabilization pond), totaling 108 samples. The MPN method was employed to determine the total coliform and thermotolerant coliform populations, using multiple series of three tubes (APHA, 2005). The system proved efficient in reducing the number of indicator bacteria of fecal contamination, showing a removal efficiency of 98.76% for total coliforms and of 99.29% for thermotolerant coliforms. However, a third treatment step involving polishing should be included to render the effluent suitable for use in fertigation or discharge into water bodies.
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| first_indexed | 2024-12-13T01:47:05Z |
| format | Article |
| id | doaj.art-0cbf3d8caeaa497ebfb60da680dc7cab |
| institution | Directory Open Access Journal |
| issn | 1981-3163 |
| language | English |
| last_indexed | 2024-12-13T01:47:05Z |
| publishDate | 2016-12-01 |
| publisher | Universidade Federal de Uberlândia |
| record_format | Article |
| series | Bioscience Journal |
| spelling | doaj.art-0cbf3d8caeaa497ebfb60da680dc7cab2022-12-22T00:03:36ZengUniversidade Federal de UberlândiaBioscience Journal1981-31632016-12-01326Efficiency of biological treatment for the removal of total and thermotolerant coliform bacteria from domestic sewage Paula Maria Pilotto Branco0Ricardo Galbiatti Sandoval Nogueira1Lívia Maria Soares Ferreira2Luiz Augusto do Amaral3Jorge de Lucas Júnior4Faculdade de Ciências Agrárias e Veterinárias - FCAV/UNESP Câmpus JaboticabalFaculdade de Zootecnia e Engenharia de Alimentos - FZEA/USPFaculdade de Ciências Agrárias e Veterinárias - FCAV/UNESP Câmpus JaboticabalFaculdade de Ciências Agrárias e Veterinárias - FCAV/UNESP Câmpus JaboticabalFaculdade de Ciências Agrárias e Veterinárias - FCAV/UNESP Câmpus JaboticabalResearchers around the world have focused their efforts on devising combinations of technologies that are not only economically feasible but also effective in mitigating the impacts caused by wastes containing pathogens that pose potential risks to human and animal health. The purpose of this study was to evaluate the performance of a biological treatment system for removing total and thermotolerant coliform bacteria with a view to the possible organic recycling of domestic sewage. To this end, a tubular continuous flow anaerobic digester, with hydraulic retention time (HRT) of 25 days and an optional stabilization pond, were used to treat the sewage produced by 150 people in the municipality of Sertãozinho, SP, Brazil. The samples were collected weekly, always on the same day, at three different sampling points (inlet of the treatment system, the outlet of tubular digester, and the optional stabilization pond), totaling 108 samples. The MPN method was employed to determine the total coliform and thermotolerant coliform populations, using multiple series of three tubes (APHA, 2005). The system proved efficient in reducing the number of indicator bacteria of fecal contamination, showing a removal efficiency of 98.76% for total coliforms and of 99.29% for thermotolerant coliforms. However, a third treatment step involving polishing should be included to render the effluent suitable for use in fertigation or discharge into water bodies. https://seer-dev.ufu.br/index.php/biosciencejournal/article/view/33292bactérias indicadorasdigestor anaeróbio de fluxo contínuoesgotolagoa de estabilizaçãosustentabilidade ambiental. |
| spellingShingle | Paula Maria Pilotto Branco Ricardo Galbiatti Sandoval Nogueira Lívia Maria Soares Ferreira Luiz Augusto do Amaral Jorge de Lucas Júnior Efficiency of biological treatment for the removal of total and thermotolerant coliform bacteria from domestic sewage Bioscience Journal bactérias indicadoras digestor anaeróbio de fluxo contínuo esgoto lagoa de estabilização sustentabilidade ambiental. |
| title | Efficiency of biological treatment for the removal of total and thermotolerant coliform bacteria from domestic sewage |
| title_full | Efficiency of biological treatment for the removal of total and thermotolerant coliform bacteria from domestic sewage |
| title_fullStr | Efficiency of biological treatment for the removal of total and thermotolerant coliform bacteria from domestic sewage |
| title_full_unstemmed | Efficiency of biological treatment for the removal of total and thermotolerant coliform bacteria from domestic sewage |
| title_short | Efficiency of biological treatment for the removal of total and thermotolerant coliform bacteria from domestic sewage |
| title_sort | efficiency of biological treatment for the removal of total and thermotolerant coliform bacteria from domestic sewage |
| topic | bactérias indicadoras digestor anaeróbio de fluxo contínuo esgoto lagoa de estabilização sustentabilidade ambiental. |
| url | https://seer-dev.ufu.br/index.php/biosciencejournal/article/view/33292 |
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