Coagulation pretreatment for a large-scale ultrafiltration process treating water from the Taihu River

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 m 3 drinking water per day. In this study, the effect of FeCl 3 coagulant on the performance of the UF system was...

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Bibliographic Details
Published in:Desalination 2008-09, Vol.230 (1), p.305-313
Main Authors: Xiangli, Qiao, Zhenjia, Zhang, Nongcun, Wang, Wee, Victor, Low, Megan, Loh, C.S., Teck Hing, Ng
Format: Article
Language:English
Subjects:
Applied sciences
Chemical engineering
Coagulation
Continental surface waters
Drinking water and swimming-pool water. Desalination
Drinking water production
Exact sciences and technology
Freshwater
High specific flux
Membrane separation (reverse osmosis, dialysis...)
Natural water pollution
Pollution
Ultrafiltration
Water treatment and pollution
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Summary: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 m 3 drinking water per day. In this study, the effect of FeCl 3 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/m 2·hr·bar, and the chemical cleaning period was largely prolonged. The natural organic matter removal mechanism by coagulation was also discussed.
ISSN:0011-9164
1873-4464
DOI:10.1016/j.desal.2007.11.032