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昆明冶金高等专科学校学报 ›› 2018, Vol. 34 ›› Issue (3): 92-97.DOI: 10.3969/j.issn.1009-0479.2018.03.017

• 环境保护与化工技术 • 上一篇    下一篇

连续沉淀法处理酸性含砷废水

张 帆1,2,龙晓波,邱邻霖,刘云梅   

  1. 1昆明冶金高等专科学校冶金材料学院,云南 昆明 650033;
    2昆明市稀散及贵金属资源综合利用重点实验室,云南 昆明 650093
  • 收稿日期:2018-05-10 出版日期:2018-06-30 发布日期:2018-06-30
  • 作者简介:张帆(1988-),男,湖南沅江人,工学博士,主要从事湿法冶金等方面的研究。

Treatment of Arsenic Acidic Wastewater by Multi-stage Precipitation

ZHANG Fan1,2,LONG Xiaobo,QIU Linlin,LIU Yunmei   

  1. 1Faculty of Metallurgy & Materials Engineering,Kunming Metallurgy College,Kunming 650033,China;
    2Kunming Key Laboratory of Scattered and Precious Metal Comprehensive Utilization,Kunming 650093,China
  • Received:2018-05-10 Online:2018-06-30 Published:2018-06-30

摘要: 针对当前酸性含砷废水处理工艺存在的问题,提出了一种“预氧化处理—石灰中和—砷、铁共沉淀—置换沉铜—水解净化”处理酸性含砷废水的方法。该方法不仅实现了酸性含砷废水中砷的固化,而且回收了废水中的有价金属铜。采用该方法处理砷、酸、铜的质量浓度分别为8.56g/L、1.76g/L、0.35g/L的酸性含砷废水,砷、酸的去除率高于99%,铜的回收率高于96%,处理后的溶液中As的质量浓度低于0.5mg/L。

关键词: 酸性含砷废水, 臭葱石, 砷, 铜, 沉淀

Abstract: In view of the current acid arsenic-containing wastewater treatment process,a new method for the treatment of arsenicacid wastewater is presented.The investigation consists of pre-oxidation,neutralization,co-precipitation,coppercementation,neutralization and hydroxide.The arsenic acid wastewater containing 8.56g/L arsenic,1.76g/L hydrion,0.35g/L copper was treated by this method.The removal of arsenic and hydrion were more than 99%.The recovery of copper was more than 96%.The concentration of arsenic was under 0.5mg/L in the wastewater after the treatment.

Key words: arsenic acid wastewater, scorodite, arsenic, copper, precipitation

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