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Effect of Coagulation Condition on Coagulation/Ultrafiltration Membrane Process  

Moon, Seong-Yong (Water Environment and Remediation Center, Korea Institute of Science and Technology)
Lee, Sang-Hyup (Water Environment and Remediation Center, Korea Institute of Science and Technology)
Kim, Seung-Hyun (Department of Civil Engineering, Kyungnam University)
Moon, Byung-Hyun (Department of Environment Engineering, Changwon University)
Publication Information
Journal of Korean Society on Water Environment / v.21, no.4, 2005 , pp. 379-384 More about this Journal
Abstract
In this research, coagulation was employed as the pretreatment for membrane process. The effective coagulation conditions were decided after the discussion of different coagulant doses and mixing conditions, etc. Raw water was taken from Nakdong River. The best operation occurred when G value was $230s^{-1}$ and the slow mixing lasted around 5 minutes at G value was $23s^{-1}$. To investigate the optimum coagulant dosage, the optimum organics removal was target as organic removal reduces membrane fouling effectively than particle removal. This result indicated that organics are more important causes than turbidity for membrane fouling. However, turbidity becomes an important factor after certain amount of organic matters is removed.
Keywords
Coagulation; Fouling; Mixing condition; Ultrafiltration; Membrane process;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
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