一种高效复合絮凝剂对多种废水的处理效果

用聚合氯化铝（PAC）和聚丙烯酰胺（PAM）复配成复合絮凝剂（PAC＋PAM）应用于污染河水、生活污水、工业废水和餐饮废水等6种废水的处理，结果表明。PAC、PAM、PAC＋PAM对污染河水的CODc。SS、浊度有显著降低作用，PAC＋PAM的净水效果明显优于PAC和PAM；PAC＋PAM对6种废水中COD的去除率为81．5％～90．4％，平均84．6％。对SS的去除率为81．9％～96．5％，平均88．9％，对浊度的去除率为91．3％-98．0％，平均95．1％；处理后悬浮物基本被絮凝沉降，水体变得较清澈透明，异味或臭味消除。说明本PAC＋PAM复合絮凝剂对各种废水均有良好的净水效果，具有重要的应用价值。

Effect of a High-rate Composite Flocculant on Wastewater Treatment

A kind of composite flocculant(PAC+PAM) combined PAC with PAM was used to treat six kinds of wastewater including polluted river water,domestic sewage,industrial wastewater and food-drink wastewater.The results showed that PAC,PAM and PAC+PAM significantly reduced COD,SS and turbidity of polluted river water.The decontamination effect of PAC+PAM was significantly better than that of individual use of PAC or PAM.The removing rates of COD,SS and turbidity of the six kinds of wastewater using PAC+PAM were 81.5%~90.4% with mean of 84.6%,81.9%~96.5% with mean of 88.9% and 91.3%~98.0% with mean of 95.1%,respectively.After treatment nearly all of the suspended substances were flocculated by PAC+PAM,so the water body became clear and the bad smell was eliminated.The result indicates that the PAC+PAM composite flocculant has good decontamination effect for various wastewaters.It is worth to apply practically.