聚硅酸硫酸铝铁处理洗煤废水的研究  

Study on Treatment of Coal Washing Wastewater by Polysilicate Aluminum Ferric Sulfate

作　　者：李培明 张娟 李国靖 胡首碧 孔德顺 

机构地区：[1]六盘水师范学院化学与材料工程学院,贵州六盘水553004

出　　处：《煤炭技术》2018年第3期298-300,共3页Coal Technology

基　　金：六盘水师范学院大学生创新项目(201624);贵州省教育厅创新群体重大研究项目(黔教合KY字[2017]);贵州省科技厅联合基金项目(黔科合LH字[2014]7445)

摘　　要：在一定条件下,由水玻璃、硫酸铁及硫酸铝制得聚硅酸硫酸铝铁絮凝剂(PSAFS)。在此基础上,研究了PSAFS对洗煤废水的净化效果。结果表明,PSAFS处理给定洗煤废水的优化工艺条件:废水的p H=7、浓度为1%的絮凝剂用量比为0.25%(体积比)、加入絮凝剂后在250 r/min下快搅3 min、在50 r/min下慢搅1 min、静置40 min。Polysilicate aluminum ferric sulfate （PSAFS） was made of sodium silicate, aluminum sulfate and ferric sulfate under certain conditions. On this foundation, the depuration effect of PSAFS on coal washing wastewater was studied. The results showed that the optimize process conditions for treating a given coal washing wastewater by PSAFS were as follows： the pH of the given wastewater was 7; the dosage ratio of flocculant at a concentration of 1% was 0.25%（volume ratio）; after adding flocculant, stirred quickly for 3 minutes at the speed of 250 r/min and stirred slowly for 1 minutes at the speed of 50 r/min; stood still for 40 minutes.

关 键 词：聚合硅酸硫酸铝铁 洗煤废水 去浊率 

分 类 号：TQ314[化学工程—高聚物工业] X703[环境科学与工程—环境工程]