Coagulation pretreatment for a large-scale ultrafiltration process treating water from the Taihu River |
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| Authors: | Qiao Xiangli Zhang Zhenjia Wang Nongcun Victor Wee Megan Low CS Loh Ng Teck Hing |
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| Affiliation: | aEnvironmental Science and Engineering Department, Shanghai Jiaotong University, No. 800 Dongchuan Road, Minhang District, Shanghai 200240, China;bEnna Engineering System Co. Ltd., Shanghai, China |
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| Abstract: | A large-scale ultrafiltration (UF) system integrated with coagulation was applied to produce drinking water from the highly turbid Taihu River. This UF installation could produce 10,000 m3 drinking water per day. In this study, the effect of FeCl3 coagulant on the performance of the UF system was evaluated. Results showed that with the integration of coagulation, not only qualified drinking water was obtained from the high turbidity raw water, but also high UF specific flux was maintained, ca.190 200 L/m2·hr·bar, and the chemical cleaning period was largely prolonged. The natural organic matter removal mechanism by coagulation was also discussed. |
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| Keywords: | Ultrafiltration Coagulation Drinking water production High specific flux |
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