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《Environmental Science and Management》 2009-06
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Effect of Environment Conditions on Viscosity of Sludge in Submerged Membrane Bioreactor

Ai Cuiling(College of Civil Engineering,Fuzhou University,Fuzhou 350002,China)  
The effect of environment conditions on the sludge viscosity in submerged membrane bioreactor and the effect of the viscosity on the filtration resistance of the membrane were studied.The results of the test showed that:high-concentration extracellular polymeric substances(EPS)accumulated in the reactor was the main reason caused the increasing of the sludge viscosity;the sludge viscosity changed with the variation of the EPS concentration;there existed a certain relativity between the sludge viscosity and the operational conditions,u=1.586(MLSS)0.614T-0.106(DO)0.469 7;there existed a good relativity between the sludge viscosity and the filtration resistance of the membrane.
【Fund】: 福州大学科技发展基金(No.2007-XQ-26);; 福州大学人才基金(No.XRC-0518)资助项目
【CateGory Index】: X703.1
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