草浆造纸黑液酸析木质素后滤液的混凝处理  

Flocculent Treatment of the Filtrate of Black Papermaking Liquor After Lignin Extraction in Acid PrecipitationOxidation Process

作　　者：王媛[1] 谭蕾[1] 曾祥钦[1] 王晓红[2] 

机构地区：[1]贵州工业大学化学与生物学院,贵州贵阳550003 [2]江苏大学化学化工学院,江苏镇江212013

出　　处：《贵州工业大学学报（自然科学版）》2003年第2期24-27,共4页Journal of Guizhou University of Technology(Natural Science Edition)

基　　金：贵州省科技厅科研基金资助项目[(2002)1057]

摘　　要：研究了硫酸铁、硫酸亚铁、高铁酸钾、聚铁、聚硅硫酸铁分别作为混凝剂对草浆黑液酸析木质素后滤液的混凝处理,试验结果表明,硫酸铁的处理效果好,且操作工艺简单,在此基础上,采用三因子二次回归正交试验设计安排实验,研究证实原水样的CODCr值、混凝剂投加量以及助凝剂投加量是影响混凝试验的重要因素,并建立了回归方程。The treatment of the filtrate of black papermaking liquor after lignin extraction in Acid Precipitation has been studied with five kinds of flocculant ferric sulfate, ferrous sulfate, potassium ferrate, polysilicon ferric sulfate and polyferric sulfate respectively. The tests show that the ferric sulfate provides a higher COD removal rate and the process is less complicated. Then a threefactor quadratic regression orthogonal experiment brings to a conclusion that CODCr of the original water sample, the amount of flocculent and the amount of assistant flocculant have significant influence on the CODCr removal efficiency. The optimum flocculation parameters are obtained, and the regressive equation is formulated.

关 键 词：草浆黑液 酸沉析 滤液 混凝处理 回归正交设计 木质素 造纸废水处理 

分 类 号：X793[环境科学与工程—环境工程] X703.1