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The operating characteristics of Cross-flow DE-dynamic membrane process for Huaihe raw water treatment

Authors： XU Guanghong1，SUN Wen1，YU Zhenxun1，DONG Bingzhi2，CAO Dawen3

Units： 1.College of Environmental Science and Engineering,Tongji University,Shanghai 200092,China; 2. Key Laboratory of Yangtze River Water Environment, Ministry of Education, Tongji University, Shanghai 200092, China; 3. National Engineering Research Centre for Urban Pollution Control,Shanghai 200092,China

KeyWords： diatomaceous earth; dynamic membrane; cross-flow; PAC additive

ClassificationCode：TQ028.8；X522

year,volume(issue):pagination： 2012,32(4):92-97

Abstract：

This paper discusses the cross-flow diatomaceous earth pre-coated dynamic membrane process in treating the Huaihe raw water directly. It attempts to evaluate the quality of dynamic membrane formation by testing the turbidity of the filtrate and the variation of flux under the condition of different dosing quantities of diatomite and different kinds of additive. The results show that the use of diatomite, combined with PAC as additive to the pre-coat, produces a high-quality of dynamic membrane. Continued addition of 0.25mg/L PAC during the whole process can reduce the filtrate turbidity to 0.25NTU; additionally, a low membrane flux drop is maintained.

Funds：

水体污染控制与治理科技重大专项（项目编号#2009ZX07424-006）；国家自然科学基金资助项目（项目编号#51078148）

AuthorIntro：

许光红（1987～），女，四川省资阳市人，硕士研究生，主要研究方向为水处理理论与技术，联系电话:18801769013，E-mail: xu063268@126.com *通讯联系人，E-mail: dbz77@tongji.edu.cn

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