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http://dx.doi.org/10.5322/JES.2011.20.6.767

A Study on Flux Efficiency on Membrane for Water Reclamination according to Coagulations  

Jung, Jin-Hee (Department of Environmental Engineering, Dong-A University)
Jang, Sung-Ho (Department of Environment System Engineering, Busan University)
Choi, Young-Ik (Department of Environmental Engineering, Dong-A University)
Publication Information
Journal of Environmental Science International / v.20, no.6, 2011 , pp. 767-773 More about this Journal
Abstract
The objectives of this research are to investigate the proper coagulation conditions which are a type and doses of coagulants, mixing conditions (velocity gradients and mixing times), pH and so on through Jar-test, to evaluate the flux variations, permeate, backwashing according to characteristics of pretreatment of the wastewater by means of MF membranes for river maintenance water reuse. The effluent water from B-city K-sewage treatment plant are used for this research. Turbidity and suspended solids(SS) are 14.2 NTU and 10.4 mg/L respectively. This condition causes fouling for membrane process. The flux decline could be reduced when coagulation pretreatment was carried out. Optimal coagulations PAC which are commonly used in the sewage treatment plant was observed in this research. The results indicate that an optimal coagulation dose and pH are 80 ppm and pH of 7 respectively, but coagulation efficiency was lower at strong acid or strong base. Results showed that continuous and steady operations in membrane separation process by means of the effective removal of organic matter and turbidity with coagulation pretreatment of sewage secondary effluent were achieved.
Keywords
Sewage treatment; Water reuse; Coagulation-membrane; Coagulant; Micro Filtration(MF);
Citations & Related Records
Times Cited By KSCI : 3  (Citation Analysis)
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