反渗透膜处理有色冶金酸性无机复合重金属废水  

TREATMENT OF NONFERROUS METALLURGICAL ACIDIC INORGANIC WASTEWATER CONTAINING HEAVY METALS BY REVERSE OSMOSIS MEMBRANE

作　　者：田晓媛[1] 杨水莲[1] 王威燕[1] 杨运泉[1] 

机构地区：[1]湘潭大学化工学院,湖南湘潭411105

出　　处：《水处理技术》2014年第11期61-64,74,共5页Technology of Water Treatment

基　　金：国家水体污染控制与治理科技重大专项(2010ZX07212-008);湖南省自然科学基金(14JJ5027)

摘　　要：以模拟有色冶金烟气净化系统酸性重金属废水为研究对象,利用反渗透膜分离技术,探究了压力、p H、运行时间和浓淡比对膜处理Cr3+、Pb2+、Cu2+、Zn2+等重金属离子效果的影响。结果表明,优化工艺条件下,Cr3+、Pb2+、Cu2+、Zn2+质量浓度同时分别高达30 mg/L下,膜对4种重金属离子的截留仍有较好效果,截留率分别为99.8%、97.0%、97.8%和97.9%;淡水中,除Cu2+的含量只达到了GB 8978-1996中的二级标准要求外,其他3种重金属离子的出水含量均符合一级标准要求。Based on reverse osmosis membrane separation technology, the treatment of inorganic acidic wastewater containing heavy metals from nonferrous metallurgical flue gas purification system was studied in this article. The effects of pressure, p H, running time and the flow rate ratio of concentrated water to permeated water on the treatment of Cr3＋, Pb2＋, Cu2＋and Zn2＋-contain wastewater were investigated. The experimental results show that, under the condition of optimum process, even the mass concentration of the 4 heavy metal ions is high up to 30 mg/L simultaneously, their removal efficiency can reach a satisfied level, which is 99.8%, 97.0%, 97.8% and 97.9% for Cr3＋, Pb2＋, Cu2＋and Zn2＋respectively; In the permeated water, except that the concent of Cu2＋is only up to the secondary index according to the GB 8978-1996, the other three kinds of heavy metal ion concent are conformed to the requirements of the GB 8978-1996.

关 键 词：有色冶金 重金属废水 反渗透 操作条件 

分 类 号：TQ028.8[化学工程] X758[环境科学与工程—环境工程]