A bio-diatomite dynamic membrane (BDDM) reactor for surface water treatment under a water head of 30, 40, 50, 60 and 70 cm, respectively, was investigated, which was very effective for pollutants removal. The water head exerted strong influences on filtration flux of BDDM during the precoating process, as well as on the formation of BDDM and turbidity variations. A high filtration flux (approximately 200−300 L/m2 h) could be achieved in the long filtration times of BDDM with a stable effluent turbidity of approximately 0.11−0.25 NTU. The BDDM could remove particles larger than 25 μm completely. The adopted sintered diatomite mainly consisted of macro pores, which were beneficial for improving the filtration flux of BDDM. During the backwash stage, the BDDM could be removed completely by the air backwash.
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Research Article|
September 01 2012
Gravity filtration performances of the bio-diatomite dynamic membrane reactor for slightly polluted surface water purification Available to Purchase
Huaqiang Chu;
Huaqiang Chu
1School of Environmental Science and Engineering, Tongji University, Shanghai 200092, China
2State Key Laboratory of Pollution Control and Resource Reuse, Tongji University, Shanghai 200092, China
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Bingzhi Dong;
Bingzhi Dong
2State Key Laboratory of Pollution Control and Resource Reuse, Tongji University, Shanghai 200092, China
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Yalei Zhang;
2State Key Laboratory of Pollution Control and Resource Reuse, Tongji University, Shanghai 200092, China
E-mail: [email protected]
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Xuefei Zhou
Xuefei Zhou
2State Key Laboratory of Pollution Control and Resource Reuse, Tongji University, Shanghai 200092, China
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Water Sci Technol (2012) 66 (5): 1139–1146.
Article history
Received:
November 25 2011
Accepted:
April 16 2012
Citation
Huaqiang Chu, Bingzhi Dong, Yalei Zhang, Xuefei Zhou; Gravity filtration performances of the bio-diatomite dynamic membrane reactor for slightly polluted surface water purification. Water Sci Technol 1 September 2012; 66 (5): 1139–1146. doi: https://doi.org/10.2166/wst.2012.284
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