논문실적
| Evaluation of a low pressure membrane filtration for drinking water treatment:pretreatment by coagulation/sedimentation for the MF membrane |
|---|
|
학술지명 IWA
저자 박희등,문지희,강문선,임재림,김충환
발표일 2009-09-01
|
|
The pretreatment combined membrane system demonstrates better performance in water production and DOM control than the direct filtration system without pretreatment. The pretreatment with coagulation and sedimentation improved the membrane performance for a sudden increase of solid loading and severe fluctuation of source water properties: in particular, the sedimentation step exhibited the capability of buffering the sudden shock of solid loading to the membrane, resulting in maintaining the stable flux and TMP in the membrane filtration. Even though pretreatment improved membrane performance, somewhat serious fouling was observed in the membrane due to the residual coagulant. The aluminum-based coagulant formed an inorganic scale with the silica originate from the source water, and then this inorganic scale was expected to accumulate in the membrane and promote severe organic fouling. |
