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采用外压式超滤膜处理自来水厂混凝沉淀和生物活性炭出水并与水厂砂滤进行对比研究。结果表明,超滤膜对浊度和细菌具有极好的截留去除效果,超滤膜出水浊度均保持在0.20NTU以下,混凝沉淀/超滤系统和生物活性炭/超滤系统出水平均浊度分别为0.09、0.11 NTU,同期砂滤出水平均浊度为0.19 NTU;30 d的出水菌落总数检测中,砂滤出水平均菌落总数为180 CFU/m L,而生物活性炭/超滤出水中仅有8次检出,混凝沉淀/超滤出水中则只有4次检出,且检出量<3 CFU/m L。超滤膜对COD_(Mn)和TN的去除能力有限,平均去除率略高于砂滤。
External pressure ultrafiltration membrane treatment of tap water plant coagulation and biological activated carbon effluent and water sand filtration were compared. The results showed that the ultrafiltration membrane had excellent removal efficiency for turbidity and bacteria, and the turbidity of the ultrafiltration membrane effluent remained below 0.20NTU. The mean turbidity of the coagulation sedimentation / ultrafiltration system and the bio-activated carbon / ultrafiltration system Respectively, 0.09,0.11 NTU, sand turbidity average 0.19 NTU over the same period; 30 days the total number of effluent colony detection, the average number of sand filtration out of the total number of colonies of 180 CFU / m L, and bio-activated carbon / ultrafiltration water only 8 times, coagulation sedimentation / ultrafiltration water only 4 times detected, and the detection of <3 CFU / m L. Ultrafiltration membrane COD_ (Mn) and TN removal capacity is limited, the average removal rate slightly higher than sand filtration.