Simulation and assessment of sludge concentration and rheology in the process of waste activated sludge treatment

查看全文 作　　者：XIA [1]Mingfang;WANG [2]Zhiwei;WU [2]Zhichao;WANG [2]Xinhua;ZHOU [2]Zhen;LU [1]Jilai

机构地区：[1]State Key Laboratory of Pollution Control and Resource Reuse, Nanjing University, Nanjing 210093, China;[2]State Key Laboratory of Pollution Control and Resource Reuse, School of Environmental Science and Engineering, Tongji University, Shanghai 200092, China

出　　处：《Journal of Environmental Sciences》索引2009年第21卷第12期,共7页

基　　金：supported by the Foundation of Chinese State Key Laboratory of Pollution Control and Resource Reuse for Young Scholars (No. PCRRY08005);by the Science and Technology Commission of Shanghai Municipality (No. 08231200200) 摘　　要：The process of using flat-sheet membrane for simultaneous sludge thickening and digestion (MSTD) was employed. The variations of sludge concentration and rheology were characterized and simulated. Based on mass balance analysis, mathematical models were developed and successfully used to predict and evaluate the variations of sludge concentration and the digestion effciency in the MSTD process. The apparent viscosity of sludge could be modeled as functions of mixed liquor suspended solids and shear rates. The sludge in the MSTD process showed both shear-thinning and viscoplastic behaviour, and under various shear rates different rheological models could be chosen to predict their flow behaviour. It was also found that sludge concentration and viscosity had significant correlations with membrane fouling in the MSTD process. 关键词：活性污泥法处理血液流变学污泥浓度评价模拟废物质量平衡分析表观粘度

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Simulation and assessment of sludge concentration and rheology in the process of waste activated sludge treatment

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