镁铁复合絮凝剂的表征及应用研究  

Experimental research on the characterization and application of Mg-Fe composite flocculant

作　　者：刘雄才[1] 张玉[2] 周集体[2] 曹同川[2] 

机构地区：[1]大连理工大学化工学院,辽宁大连116024 [2]大连理工大学环境与生命学院,工业生态与环境工程教育部重点实验室,辽宁大连116024

出　　处：《中国环境科学》2009年第6期646-650,共5页China Environmental Science

基　　金：辽宁省科学技术计划项目(社会发展攻关计划)(2007229004);国家水体污染控制与治理科技重大专项河流专题(2008ZX07208-004-2)

摘　　要：以FeSO4、MgO和H2SO4为原料,制备了新型镁铁复合絮凝剂(PFMS),考察了PFMS的结构和Fe(Ⅲ)分布形态,为了考察自制PFMS、自制聚合硫酸铁(PFS)与工业PFS产品的絮凝性能差别,选择高岭土模拟浊度废水、直接耐晒黑G模拟染料废水和焦化废水生化出水,分别进行了去除浊度、色度和COD的絮凝实验.结果表明,Mg2+未参与聚合过程,但引入Mg2+提高了PFMS的稳定性.PFMS对浊度去除效果略高于自制PFS和工业PFS,余浊<5NTU;在碱性条件下,PFMS的脱色率、COD去除率高于自制PFS和工业PFS.A new PFMS composite flocculant was prepared by ferrous sulfate （FeSO4）, magnesium oxide （MgO） and sulfuric acid （H2SO4）. The structure and iron distribution of the product were investigated. The magnesium ion didn＇t participate in the polymerization process, but it improved the stability of the product. In order to study the flocculation performance difference between self-made PFMS/PFS and industrial PFS, the simulated turbidity wastewater by kaolin, the simulated dye whstewater by direct fast black G and the coking wastewater were chosen to carry out the coagulation experiment of removing turbidity, color and COD, respectively. The turbidity removal efficiency by PFMS was a little higher than that of the self-made and industrial PFS, and the residual turbidity was below 5 NTU. In alkaline conditions, the decoloration rate and COD removal rate by PFMS were higher than that of the self-made and industrial PFS.

关 键 词：镁铁复合絮凝剂 表征 应用 

分 类 号：X703.5[环境科学与工程—环境工程]