MICROBIAL REMOVAL EFFICIENCY OF UV IN TEHRAN SHAHID MAHAUATI WASTEWATER TREATMENT PLANT

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DABAGH R.

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Journal: WATER AND WASTEWATER Year:2009 | Volume:20 | Issue:1 (69) Page(s): 59-66

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Title

MICROBIAL REMOVAL EFFICIENCY OF UV IN TEHRAN SHAHID MAHAUATI WASTEWATER TREATMENT PLANT

Author(s)

DABAGH R. | Issue Writer Certificate

Keywords

ULTRAVIOLETQ3

DISINFECTIONQ3

COLIFORMQ2

WASTEWATER TREATMENT PLANTQ2

SHAHID MAHALLATIQ3

Abstract

Shahid Mahallati WASTEWATER TREATMENT PLANT was selected for installing a UV DISINFECTION unit to investigate its gennicidal effect on microbial removal. Low pressure mercury lamps were used to generate gennicidal ULTRAVIOLET radiation (UV-C). The UV system was operated over a period of 6 months that included both warm and cold seasons. A maximum UV DISINFECTION efficiency of 14.4m3/h was recorded for the system on the basis of design criteria within turbidity ranges of 9 to 32 NTU. The minimum UV dose applied in the UV unit was 40000 m W.s/cm2 and the highest bacterial density in the UV unit influent was 5.6*10 . Effluent total coli form or fecal COLIFORM enumerationafter exposure to UV ray showed the microbial density decreasing from four logs, or 99.99%, to as high as six logs, or 99.9999% removal efficiency, under different conditions. Effluent microbial densities in terms of total and fecal COLIFORMs were below 1000MPN/I00mL and 400MPN/100mL, respectively. These values comply with wastewater discharge or cultural irrigation standards according to Iran Department of Environment. From our results, it IS concluded that UV DISINFECTION may be an effective technique for wastewater DISINFECTION in Iranian WASTEWATER TREATMENT PLANTs.

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APA: Copy

DABAGH, R.. (2009). MICROBIAL REMOVAL EFFICIENCY OF UV IN TEHRAN SHAHID MAHAUATI WASTEWATER TREATMENT PLANT. WATER AND WASTEWATER, 20(1 (69)), 59-66. SID. https://sid.ir/paper/103474/en

Vancouver: Copy

DABAGH R.. MICROBIAL REMOVAL EFFICIENCY OF UV IN TEHRAN SHAHID MAHAUATI WASTEWATER TREATMENT PLANT. WATER AND WASTEWATER[Internet]. 2009;20(1 (69)):59-66. Available from: https://sid.ir/paper/103474/en

IEEE: Copy

R. DABAGH, “MICROBIAL REMOVAL EFFICIENCY OF UV IN TEHRAN SHAHID MAHAUATI WASTEWATER TREATMENT PLANT,” WATER AND WASTEWATER, vol. 20, no. 1 (69), pp. 59–66, 2009, [Online]. Available: https://sid.ir/paper/103474/en

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