| Title |
The Effect of PACs Coagulant on Permeate Flux in Pilot Scale Microfiltration System for Water Treatment |
| Authors |
김지훈 ( Ji Hoon Kim ) ; 최혁 ( Hyeok Choi ) ; 김형수 ( Hyung Soo Kim ) ; 염익태 ( Ick Tae Yeom ) ; 한기봉 ( Gee Bong Han ) |
| Keywords |
Microfiltraion; PACs; Cross Flow; Feed and Bleed |
| Abstract |
This paper assesses the results obtained from a microfiltration(MF) pilot plant operation with surface water during two months. A pilot plant operated in cross flow filtration feed and bleed mode continuously(pore size 0.22㎛, tubular MF membrane). The most important operational parameter achieved during the pilot experiment was permeability. The permeability depends on characteristics of the raw water, membrane surface properties, and operation condition. If the coagulated water is supplied without coagulation process, conventional membrane separation devices have a risk of decreasing permeate flux due to plugging of flow path and fouling of the membrane surface. Consequently, in this experiment, the initial permeate flux decline about almost 50% is due primarily to the silicate deposition of PACs(polyaluminium chloride silicate) coagulant on the membrane surface. Also, the permeate flux is never restored again by irreversible deposition(attachment) of silicate particles on the membrane surface. |