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《Environmental Science & Technology》 2010-11
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Distribution and Transformation of Molecular Weight of Organic Matters in a Wastewater Treatment System

SHEN Guo,LI Yin (School of Environmental Science and Engineering,Donghua University,Shanghai 201620,China)  
Distribution and transformation of molecular weight of organic matters in a wastewater treatment system were monitored by ultrafiltration membrane method.Characteristics of molecular weight distribution of organic matters and amounts of organic fractions in different molecular weight ranges were measured.Results showed that organics on the fraction of molecular weight less than 1K had the largest ratio in total organics of outlets in the anaerobic,anoxic and aerobic tank.TOC of the organics with low molecular weight less than 1K was 60.9%,58.5%,65.2% of total TOC,and UV254 was 69.9%,67.9%,82.1% of total UV254 respectively.It is less efficient to remove organics of low molecular weight by traditional treatment process.
【Fund】: 上海市重点学科建设项目(B604)
【CateGory Index】: X703
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