镁化合物在工业废水处理中的研究应用现状  

Research and development of magnesium-salt flocculants in wastewater treatment

作　　者：程国斌[1] 吴艳平[2] 马伟[3] 

机构地区：[1]平顶山学院,河南平顶山467001 [2]佛山科学技术学院,广东佛山528000 [3]大连理工大学,辽宁大连116024

出　　处：《工业水处理》2006年第7期7-10,共4页Industrial Water Treatment

摘　　要：Mg2+在pH9.5～11.5时可以形成氢氧化镁沉淀,所形成的氢氧化镁沉淀对废水中的污染物质具有很好的絮凝效果,因而近年来得到国内外研究人员的广泛重视。作者全面论述了镁化合物(氯化镁、氢氧化镁、海水、卤水、干卤等)在水处理中的研究应用现状,展望了其在工业废水处理中的应用前景。When magnesium ion is initially present in wastewater, an increase in pH upon alkalization will result in the precipitation of magnesium hydroxide. The resulting magnesium hydroxide is a gelatinous precipitate, which has been found to serve as an efficient coagulant and flocculant aid. Over the past years, the role of magnesium ions as a potential flocculant for the chemical clarification of wastewater have been investigated. A comprehensive review of high pH magnesium flocculant application in wastewater treatment and the development trend in the future are presented.

关 键 词：氢氧化镁 絮凝剂 废水处理 

分 类 号：X703[环境科学与工程—环境工程] TQ132.2[化学工程—无机化工]