摘 要：本文对混凝沉降法处理造纸中段废水进行了研究，探讨了混凝阶段p H 值以及混凝剂投加量等因素对造纸中段废水COD和色度去除率的影响，确定了最佳处理条件。实验中运用了CPAM絮凝剂（FC265、FC268）、聚合氯化铝、高氯化铁、硫酸铁、硫酸铝对废水进行絮凝，考察了加入量、pH值对絮凝效果的影响，确定了选用聚合氯化铝加入量3mL、pH值为8的时候絮凝效果最好。
关键词：混凝沉降法；混凝剂；造纸中段废水
Study on the Treatment of Washing and Bleaching Effluent in Papermaking Industry
Abstract: Waste water has carried out the main body of a book on to drifting along curdling to sedimentation the middle piece handling a paper making studying, investigation and discussion drift along curdling to have ascertained the best as well as stage p H value drifting along curdling to throw the effect adding amounts wait for a factor to paper making middle piece waste water COD and chroma takeoff rate dose, handling condition. The chlorinating aluminium , high ferric chloride , sulfuric acid iron , aluminum sulfate having wielded CPAM flocculant (FC265 , FC268) , having
got together in the experiment carry out a flocculation on waste water , flocculation effect is best when 3 mL , pH value having inspected the effect adding amounts , pH value to flocculation effect , having ascertained that to select and use the polymerization chlorinating aluminium adding amounts are 8.
Keywords：Coagulation and sedimentation; Coagulant; Washing and bleaching effluent
