通过混凝-粉末活性炭（PAC）吸附-浸没式超滤膜(UF)联用工艺去除砂滤池反洗水（FBWW）中溶解性有机物（DOM），以降低后续回用过程中消毒副产物（DBPs）生成量。试验对3种混凝药剂聚合硫酸铁(PFS)、三氯化铁（FeCl3）、聚合氯化铝(PACl) 处理FBWW的效果进行了比较，探讨其对UV254和DOC的去除效果。结果表明：PFS对有机物去除效果优于PACl和 FeCl3；PFS与粉末活性炭混合投加可增加有机物去除率，粉末活性炭为20mg/L，PFS为8mg/L时出水浊度为0.85NTU，UV254和DOC去除率分别为43%和31%；采用混凝-PAC吸附-超滤膜（UF）处理FBWW对UV254和DOC去除率分别达到51%和41%，出水浊度为0.19NTU，UV254为0.031cm-1，DOC为2.76mg/L。此工艺可有效降低反冲洗水中DOM含量，达到重复利用净水厂废水的目标。

 Coagulation-activated powered carbon (PAC) adsorption-submerged ultrafiltration membrane (UF) process was used to remove dissolved organic matter (DOM) in filter backwash water (FBWW) and disinfections by-products in disinfection process was simultaneously reduced. Three types of coagulation, polyferric sulfate (PFS), ferric chloride (FeCl3), polymeric aluminum (PACl), were compared on the treatment of FBWW. The effects on the UV254 and DOC were studied. The results indicate that: PFS can be more efficient in organic matter removal than PACl and FeCl3; adding activated powered carbon into coagulation process contributes to the removal of pollutants; at dosage 20mg/L of activated powered carbon and 8mg/L of PFS，the residual turbidity is 0.84NTU, the removal rates of UV254 and DOC are 43% and 31%, respectively; 51% of UV254 removal and 41%  of DOC removal can be achieved through Coagulation-PAC adsorption-submerged UF process，and turbidity, UV254, DOC of membrane flux of are 0.19NTU, 0.031cm-1，2.76mg/L, respectively .

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