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《Urban Environment & Urban Ecology》 2006-06
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Reduction of Excess Sludge Production by Uncoupling Metabolism of TCS and OSA Process

YU Xiao-yong~1,HU Qin-hai~1,YE Fen-xia~2(1.Department of Environmental Engineering,Zhejiang University,Hangzhou 310029,China;2.Institute of Chemical Engineering,Ningbo University of Technology,Ningbo 315016,China)  
To determine whether uncoupling metabolism could be used to reduce sludge production in biological wastewater treatment,the process with the addition of 3,3′,4′,5-tetrachlorosalicylanilide(TCS)which served as a metabolic uncoupler,oxic-settling-anoxic(OSA) process and OSA with TCS process were studied to investigate the reduction of excess sludge yield.The 180?d test showed that three processes reduced the excess sludge by 33.99%,25.94% and 46.90%,respectively.Comparing with control process,COD removal rates of three processes did not significantly influenced,and TN removal rates decreased.Sludge settleability was adversely influced by TCS,but improved by OSA.Meanwhile,sludge microbeam population changed after 180?d operation.These results suggested that it might be possible to apply combined TCS and OSA process to reduce the excess sludge yield.
【Fund】: 国家自然科学基金资助项目(50478043)
【CateGory Index】: X703.1
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【References】
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1 HE Zan1,2,WANG Hai-yan2,TIAN Hua-han3,WANG Li1,ZHOU Yue-xi2(1.School of Civil and Environmental Engineering,Beijing University of Science and Technology, Beijing 100083,China;2.Department of Water Pollution Control Technology,Chinese Research Academy of Environmental Sciences,Beijing 100012,China;3.HydroChina Chengdu Engineering Corporation,Chengdu 610072,China);Research Progress in Wastewater Treatment Processes with Sludge Reduction[J];China Water & Wastewater;2009-08
【Co-references】
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1 ZHAO Li wei,WANG De long,ZHANG Yu hui,LIU Wei (Tianjin Environmental Monitrring Centre,Tianjin 300191,China);Quick Measurement of Total Nitrate Nitrogen and Nitrite Nitrogen with Ultraviolet Absorption Method[J];URBAN ENVIRONMENT & URBAN ECOLOGY;2000-05
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1 HU Xue-bin1,CHAI Hong-xiang1,HAN Wan-yu1,2,JI Fang-ying1,LONG Teng-rui1(1.Key Laboratory of Three Gorges Reservoir Region's Eco-Environment,Ministry of Education,Chongqing University,Chongqing 400045,P.R.China;2.Hydrochina Huadong Engineering Corporation,Hangzhou 310014,P.R.China);Performance of A Sludge Reduction System on Removal of Nitrogen and Phosphorous Controlled by Low Dissolved Oxygen[J];Journal of Civil,Architectural & Environmental Engineering;2009-05
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