Fecal coliform removal from the effluent of UASB reactor through diffused aeration

Abid Ali Khan; Rubia Zahid Gaur; Vinay Kumar Tyagi; Beni Lew; Vasileios Diamantis; Absar Ahmad Kazmi; Indu Mehrotra

doi:10.1080/19443994.2012.669156

Fecal coliform removal from the effluent of UASB reactor through diffused aeration

Abid Ali Khan, Rubia Zahid Gaur, Vinay Kumar Tyagi, Beni Lew, Vasileios Diamantis, Absar Ahmad Kazmi, Indu Mehrotra

Research output: Contribution to journal › Article › peer-review

11 Scopus citations

Abstract

Although UASB systems treating municipal wastewater generally remove fecal coliform (FC) by ~ one order of magnitude, the effl uent still contains concentrations higher than the WHO standard for unrestricted irrigation. In this study, the effect of continuous diffused aeration on the removal of FC was examined. The diffused aeration system was operated at different hydraulic retention times (60, 30 and 15 min) and dissolved oxygen (DO) concentrations (5-6 and 1-2 mg/l). The removal of FC was affected by the applied HRT and DO. Optimum results were obtained at HRT and DO equal to 60 min and 5-6 mg/l respectively, with FC removal of approximately 2 log (97%). The mechanisms responsible for FC die-off were the pH and oxidation reduction potential (ORP) of the medium.

Original language	English
Pages (from-to)	41-44
Number of pages	4
Journal	Desalination and Water Treatment
Volume	39
Issue number	1-3
DOIs	https://doi.org/10.1080/19443994.2012.669156
State	Published - Jan 2012
Externally published	Yes

Keywords

Diffused aeration
Dissolved oxygen
Fecal coliform removal
Municipal wastewater
ORP
UASB

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10.1080/19443994.2012.669156

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title = "Fecal coliform removal from the effluent of UASB reactor through diffused aeration",

abstract = "Although UASB systems treating municipal wastewater generally remove fecal coliform (FC) by ~ one order of magnitude, the effl uent still contains concentrations higher than the WHO standard for unrestricted irrigation. In this study, the effect of continuous diffused aeration on the removal of FC was examined. The diffused aeration system was operated at different hydraulic retention times (60, 30 and 15 min) and dissolved oxygen (DO) concentrations (5-6 and 1-2 mg/l). The removal of FC was affected by the applied HRT and DO. Optimum results were obtained at HRT and DO equal to 60 min and 5-6 mg/l respectively, with FC removal of approximately 2 log (97%). The mechanisms responsible for FC die-off were the pH and oxidation reduction potential (ORP) of the medium.",

keywords = "Diffused aeration, Dissolved oxygen, Fecal coliform removal, Municipal wastewater, ORP, UASB",

author = "Khan, {Abid Ali} and Gaur, {Rubia Zahid} and Tyagi, {Vinay Kumar} and Beni Lew and Vasileios Diamantis and Kazmi, {Absar Ahmad} and Indu Mehrotra",

note = "Funding Information: We are very much thankful to Prof. Charles N. Haas, L.D. Betz Professor of Environmental Engineering, Drexel University, Philadelphia PA for critical suggestions and Petroleum Conservation Research Association, New Delhi for providing financial grant for this research.",

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AU - Tyagi, Vinay Kumar

AU - Lew, Beni

AU - Diamantis, Vasileios

AU - Kazmi, Absar Ahmad

AU - Mehrotra, Indu

N1 - Funding Information: We are very much thankful to Prof. Charles N. Haas, L.D. Betz Professor of Environmental Engineering, Drexel University, Philadelphia PA for critical suggestions and Petroleum Conservation Research Association, New Delhi for providing financial grant for this research.

PY - 2012/1

Y1 - 2012/1

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AB - Although UASB systems treating municipal wastewater generally remove fecal coliform (FC) by ~ one order of magnitude, the effl uent still contains concentrations higher than the WHO standard for unrestricted irrigation. In this study, the effect of continuous diffused aeration on the removal of FC was examined. The diffused aeration system was operated at different hydraulic retention times (60, 30 and 15 min) and dissolved oxygen (DO) concentrations (5-6 and 1-2 mg/l). The removal of FC was affected by the applied HRT and DO. Optimum results were obtained at HRT and DO equal to 60 min and 5-6 mg/l respectively, with FC removal of approximately 2 log (97%). The mechanisms responsible for FC die-off were the pH and oxidation reduction potential (ORP) of the medium.

KW - Diffused aeration

KW - Dissolved oxygen

KW - Fecal coliform removal

KW - Municipal wastewater

KW - ORP

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Fecal coliform removal from the effluent of UASB reactor through diffused aeration

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Keywords

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