制浆造纸低浓废水的吸附絮凝法深度处理  

Adsorption & Flocculation Treatment of Low Concentration Waste Water of Pulp & Paper Mills by Bentonite

作　　者：刘廷志[1] 段希磊[1] 段韦江[1] 胡惠仁[1] 

机构地区：[1]天津科技大学材料科学与化学工程学院,天津市制浆造纸工程重点实验室,天津300457

出　　处：《中国造纸》2010年第1期43-46,共4页China Pulp & Paper

基　　金：天津市高等学校科技发展基金计划项目(2006ZD20);国家"十一五"科技支撑计划项目(2006BAD32B07)的支持

摘　　要：采用膨润土为吸附剂对制浆造纸企业低浓外排废水进行吸附絮凝处理。处理条件:絮凝剂聚硅氯化铝(PASC)用量为400mg/L,膨润土用量为500mg/L,反应温度30℃,搅拌速度300r/min,吸附20min。处理后废水CODCr从230mg/L下降到了90mg/L,CODCr去除率为60.9%,色度去除率达到了41.4%,在投入和运行成本都较低的情况下,废水排放达到了国家标准。In this paper, bentonite was used in treatment of low concentration waste water from pulp ＆ paper mills. The bentonite was used as adsorption agent while the PASC was used as flocculation agent. At the optimum conditions： dosage of PASC 400 mg/L, dosage of bentonite 500 mg/L, reaction temperature 30℃, 300 rpm stirring and Absorption 20 min, CODCr decreases from 230 mg/L to 90 mg/L, the removal rate is 60.9%, the removal rate of chroma is 41.4%. Indicating that it meets the new discharge standards at a relatively low cost of investment and operation.

关 键 词：造纸废水 膨润土 聚硅氯化铝 吸附絮凝 

分 类 号：X793[环境科学与工程—环境工程]