含重金属离子酸性废水石灰法处理后回用技术研究  

STUDY ON RECYCLE TECHNOLOGY FOR ACIDIC WASTEWATER CONTAINING HEAVY METAL IONS TREATED BY LIME-BASE PROCESS

作　　者：殷志伟[1] 

机构地区：[1]湖南有色金属研究院,长沙410015

出　　处：《矿冶》2002年第2期77-80,共4页Mining And Metallurgy

摘　　要：含重金属酸性废水经石灰法处理后可获得净化水。然而 ,这种净化水因其 pH和钙离子含量较高 ,容易引起严重结垢 ,这是制约净化水回用的关键。本文阐述了解决净化水回用的技术问题及其工业应用 ,就净化水回用方案的确定、回用过程中Ca2 + 浓度的变化、水质稳定剂的筛选和动态模拟试验 ,以及水质稳定剂对废水处理效果的影响等诸方面进行了探讨。以某铅锌冶炼厂为例 ,自 1997年对其净化水采取水质稳定措施并逐步实施回用 ,目前回用水量达 80 0m3/h ,输水管道及用水设备一直运行良好。净化水作为一种再生资源 ,它的回用具有显著的经济效益和环境社会效益。The purified water can be obtained after acidic wastewater containing heavy metals is treated by lime base process. However, it is easy to lead heavy pipe filth due to higher pH and calcium ion content, which is a key problem with restricted reuse of the purified water. This paper expounds the techniques for treatement and reuse of the purified water and their application in industry. The recycle of the purified water, changes of Ca 2+ concentration in recycle, choice of stabilizing agents for water quality, dynamic simulation test and the effect of the stabilizing agents on treatment results were investigated. In certain lead and zinc smeltery as an example, the technological measures for stabilization of purified water quality have been taken and the purified water used since 1997. Until now, the flowrate of recycling purified water has been up to 800m3/h and the water reuse system has a good running state at all times. The recycle of the purified water as a renewal resource has remarkable benefits of economy and society.

关 键 词：酸性废水 重金属离子 石灰处理 净化水回用 综合利用 

分 类 号：X703.1[环境科学与工程—环境工程]