文档介绍：Study on Control of Membrane Fouling by Different
Forms of Coagulation Pretreatment

Wang Liang [1, 2], Zhu Yueqi [1], Zhang Hongwei [2], Zhang 2. Key laboratory of education ministry for Hollow Fiber
Zhaohui [1], Yang Lin [1] Membrane Materials and Membrane Processes
1. Department of Environmental and Chemical Engineering Tianjin Polytechnic University
Tianjin Polytechnic University Tianjin 300160, China
Tianjin 300160, China e-mail: mashi7822@

Abstract—The influence of coagulants ferric chloride and which was called In-Line coagulation-Membrane Filtration
aluminium sulfate on membrane fouling under different process. Among the three operation modes, it was obvious that
coagulation pretreatments was studied, and removal anics the third mode has the shortest process and lower operation
in different molecular weight (MW) was also studied by two cost.
coagulants. The experimental results suggested that direct
membrane filtration of coagulating liquid was more effective to The objective of this paper was to select a suitable
alleviate membrane fouling than membrane filtration of operation mode of coagulation-membrane filtration process.
supernatant after coagulation. Furthermore, when ferric chloride During the experiments the last two modes pared, and
was used as a coagulant the membrane flux can be recovered to the influence on membrane