The relative importance of floc property on microfiltration and fouling mechanism remains a field of arguments. The effects of floc structure and strength on fouling rate of coagulation-microfiltration were investigated in dead-end microfiltration. Flocs varying in size, fractal structure and strength were prepared by AlCl3 and PACl (Polyaluminum Chloride) coagulation at various dosages followed by different slow mixing rates and filtration without any sedimentation step. The rates of flux decline for flocs formed under same coagulant dosage but different shear conditions showed only limited size and compactness dependence. However, the floc strength effect on membrane filtration performance was observed clearly with the floc strength constant exhibiting a strong positive linear correlation with the resulted cake compressibility index.
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Research Article|
March 01 2011
Effect of floc structure and strength on membrane permeability in the hybrid coagulation-microfiltration process Available to Purchase
Bingqing Zhao;
1State Key Laboratory of Environmental Aquatic Chemistry, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, No. 18, Shuangqing Road, Haidian District, Beijing 100085, China E-mail: [email protected]; [email protected]
E-mail: [email protected]
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Dongsheng Wang;
Dongsheng Wang
1State Key Laboratory of Environmental Aquatic Chemistry, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, No. 18, Shuangqing Road, Haidian District, Beijing 100085, China E-mail: [email protected]; [email protected]
3State Key Laboratory of Environmental Aquatic Chemistry, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, No. 18, Shuangqing Road, Haidian District, Beijing 100085, China E-mail: [email protected]
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Tao Li;
Tao Li
1State Key Laboratory of Environmental Aquatic Chemistry, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, No. 18, Shuangqing Road, Haidian District, Beijing 100085, China E-mail: [email protected]; [email protected]
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Chihpin Huang
Chihpin Huang
2Institute of Environmental Engineering, National Chiaotong University, Hsinchu, Chinese Taiwan E-mail: [email protected]
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Water Supply (2011) 11 (1): 97–105.
Citation
Bingqing Zhao, Dongsheng Wang, Tao Li, Chihpin Huang; Effect of floc structure and strength on membrane permeability in the hybrid coagulation-microfiltration process. Water Supply 1 March 2011; 11 (1): 97–105. doi: https://doi.org/10.2166/ws.2011.014
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