冶炼厂重金属废水处理工艺改造及运行实践  

Reconstruction and Operation of Heavy Metals Wastewater Treatment Process from the Smelter

作　　者：杨勇[1,2,3] 张莉 陈华君 欧根能[1,2,3] 刘维维 

机构地区：[1]昆明冶金研究院,云南昆明650503 [2]云南省选冶新技术重点实验室,云南昆明650503 [3]共伴生有色金属资源加压湿法冶金技术国家重点实验室,云南昆明650503 [4]浙江仁欣环科院有限责任公司,浙江宁波315199

出　　处：《水处理技术》2017年第12期135-138,共4页Technology of Water Treatment

基　　金：财政部环保部重金属污染防治专项资金(2110399);云南省危险废物处理专项(2016YWF001)

摘　　要：针对石灰-铁盐工艺存在问题,在原工艺基础上,提出了"石灰中和-电化学-KDF反应器-纳滤"的深度处理改造工艺,以实现所有冶炼废水处理和全部回用。运行实践表明:改造工艺运行稳定,处理效果好,淡水产率高,自动化程度高,石灰用量少和污泥产量低;纳滤淡水能满足所有生产用水水质和地表水环境质量标准(GB 3838-2002)Ⅲ类,而浓水达到铅锌工业污染物排放标准(GB 2544-2010)特别排放限值,具有显著的经济、环境和社会效益。Aiming at the problems of lime-ferric salt process, the reconstructed process （RP） of advanced treatment of ＇neutralization -electrochemistry-KDF reactor-nanofiltration （NF）＇ was proposed on the basis of the original process. All smelting wastewater could be treated and completely reused by the RP. The running practice showed that, the RP had stable operation, good treatment effect, high yield, high automation, low lime consumption and sludge production. Freshwater of NF satisfied water quafity requirements of all production and the III standard of Environmental Quality Standard for Surface Water （GB 3838 --2002）, and concentrated water reached the special emission limits in Emission Standard of Pollutants for Lead and Zinc Industry （GB 2544--2010）. The RP had obvious economic, environmental and social benefits.

关 键 词：冶炼厂 重金属废水 工艺改造 深度处理 效益 

分 类 号：X756[环境科学与工程—环境工程]