粉末活性炭-超滤膜处理微污染水试验研究

Powdered activated carbon-ultrafiltration membrane experimental study on treatment of micro-polluted water

基于超滤膜对有机物去除率低和超滤膜污染严重的现状,构建了传统工艺+超滤以及传统工艺+粉末活性炭(PAC)+超滤两组工艺,并对处理前后水样的浊度、UV_(254)、高锰酸盐指数进行检测,对比了两组工艺对微污染水中的污染物的处理效能。结果表明,两组工艺对于浊度的去除效果都比较好,出水浊度不受原水水质的影响,传统工艺+超滤组合工艺对于有机物的去除效果不理想;传统工艺+PAC+超滤组合工艺对有机物有着良好的去除效果,出水的浊度、UV_(254)和高锰酸盐指数的去除率分别为90.9%,84.6%和77.0%;超滤膜表面污染物主要为腐殖酸类物质和蛋白质类物质,经过化学清洗,基本上能恢复TMP,PAC的存在能有效减缓超滤膜的污染。

Based on the present situation of the low efficiency of organic matter removal and the serious pollution of ultrafiltration membranes, constructed two sets of process, a group of traditional craft ＋ UF, an- other group of traditional crafts ＋ PAC ＋ UF, and turbidity of water samples and UV254 and permanganate index were detected before and after the two process, comparing two groups of slightly contaminated process water pollutant treatment performance. The results showed that：two processes for turbidity removal efficiency are better, raw water turbidity not affect water quality, traditional craft ＋ UF for removal of or- ganic matter is not ideal ; traditional craft ＋ PAC ＋ UF with good organic matter removal. The water turbidi- ty,UV254 and permanganate index removal rates were 90.9% , 84.6% and 77.0% , uhrafiltration mem- brane surface pollutants are mainly humic acid substances and protein substances, after chemically clean- ing can substantially restore TMP, the presence of PAC can effectively slow down the pollution of ultrafil- tration membranes.