CAJ | 학술논문

膜污染是制约膜技术应用的重要因素.向膜生物反应器(MBR)中投加颗粒活性炭(GAC),通过分析MBR系统中膜通量、过滤阻力等的变化,考察投加GAC对MBR系统过滤特性的影响.结果表明,运行30 d后,未投加和投加GAC的MBR系统的膜通量分别降至初始的31.3%和91.7%;未投加GAC系统的总过滤阻力和极化阻力分别为投加GAC系统的5.8和19.4倍,其污泥的多糖和蛋白质含量为投加GAC系统的近2倍,而其胶体物质和溶解性物质浓度分别为投加GAC系统的3.2和2.2倍.由此表明,投加GAC可大大减缓膜污染,延长膜的过滤周期.
막오염시제약막기술응용적중요인소.향막생물반응기(MBR)중투가과립활성탄(GAC),통과분석MBR계통중막통량、과려조력등적변화,고찰투가GAC대MBR계통과려특성적영향.결과표명,운행30 d후,미투가화투가GAC적MBR계통적막통량분별강지초시적31.3%화91.7%;미투가GAC계통적총과려조력화겁화조력분별위투가GAC계통적5.8화19.4배,기오니적다당화단백질함량위투가GAC계통적근2배,이기효체물질화용해성물질농도분별위투가GAC계통적3.2화2.2배.유차표명,투가GAC가대대감완막오염,연장막적과려주기.
Membrane fouling is an important factor of restricting the application of membrane bio-reactor (MBR). By analyzing the change of membrane flux and filtration resistance in MBR with addition of granular activated carbon (GAC), the influence of GAC on MBR filtration performance was investiga-ted. After 30 d of operation, the membrane flux in MBRs with and without addition of GAC is decreased to 31.3% and 91.7% of the initial values respectively. The total filtration resistance, polarization resist-ance, polysaccharides, protein, colloids and soluble matters in MBR without addition of GAC are 5.8 times, 19.4 times, 2 times, 2 times, 3.2 times and 2.2 times of those in MBR with addition of GAC re-spectively. It is concluded that the addition of GAC can alleviate membrane fouling and prolong mem-brane filtration cycle.