聚硅酸铝铁絮凝剂在造纸废水深度处理中的应用  

Application of Polysilicate Ferro-aluminum Sulfate in Papermaking Waste Water Advanced Treatment

作　　者：张安龙[1] 郭星[1] 罗清[1] 

机构地区：[1]陕西科技大学轻工与能源学院,陕西省造纸技术及特种纸品开发重点实验室,陕西科技大学教育部轻化工助剂化学与技术重点实验室,陕西西安710021

出　　处：《造纸科学与技术》2013年第5期92-97,共6页Paper Science & Technology

基　　金：十二五国家科技支撑计划项目(2011BAC11B04)资助

摘　　要：研究了以硫酸铝、硫酸铁、硅酸钠、浓硫酸和氢氧化钠等为原料制备的无机高分子絮凝剂聚硅酸铝铁(Polysilicate Ferro-Aluminum Sulfate,简称PSAF)对废纸造纸废水三级出水深度处理的效果。考察了n(Si)/n(Al)/n(Fe)、pH和PSAF用量等因素对去除造纸废水的色度及COD Cr处理效果的影响,并且与PAC进行了处理效果对比。结果表明:Si/(Al3++Fe3+)=1.5:1、Al3+/Fe3+=2:1、废水pH=6,温度为40℃,PSAF投加量200mg/L时,PSAF对废水的色度和COD Cr有比较好的去除效果。同样的投加条件下,PSAF效果优于PAC。In this paper, The effect of inorganic macromolecule flocculant： polysilicate aluminium ferric （PSAF） which was made from aluminum sulfate, ferric sulfate, sodium silicate, sulfuric acid and sodium hydroxide, on ad- vanced treatment of secondary effluent from papermaking was studied. The influences of factors, such as Al / Fe / Si molar ratio,pH value and dosage of PSAF on the treatment effect on removal of color and CODcr of paperrnaking waste water were investigated and its performance was compared with PAC. The results showed that： Si/（ Al^3＋ ＋ Fe^3＋ ） =1.5：1 ,Al^3＋/Fe^3＋ =2：1 ,pH =4,T =40℃ ,the dosage of PSAF 200mg/L,the PSAF had good removal effi-ciency in color and CODcr, The coagulation effect of PSAF was superior to that of PAC when the dosage was the same.

关 键 词：造纸废水 絮凝剂 聚硅酸铝铁 CODCR 

分 类 号：X703[环境科学与工程—环境工程]