摘 要：本文對混凝沉降法處理造紙中段廢水進行了研究，探討了混凝階段p H 值以及混凝劑投加量等因素對造紙中段廢水COD和色度去除率的影響，確定了最佳處理條件。實驗中運用了CPAM絮凝劑（FC265、FC268）、聚合氯化鋁、高氯化鐵、硫酸鐵、硫酸鋁對廢水進行絮凝，考察了加入量、pH值對絮凝效果的影響，確定了選用聚合氯化鋁加入量3mL、pH值為8的時候絮凝效果最好。
關鍵詞：混凝沉降法；混凝劑；造紙中段廢水
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
