欢迎访问过程工程学报, 今天是

过程工程学报 ›› 2017, Vol. 17 ›› Issue (2): 259-262.DOI: 10.12034/j.issn.1009-606X.216228CSTR: 32067.14.jproeng.216228

• 反应与分离 • 上一篇    下一篇

多级沉淀法处理含砷废水

门玉1,李洪枚1,OTGON Nasantogtokh2,张广积2   

  1. 1. 首都经济贸易大学安全与环境工程学院
    2. 中国科学院过程工程研究所，中国科学院绿色过程与工程实验室
  • 收稿日期:2016-06-23 修回日期:2016-10-17 出版日期:2017-04-20 发布日期:2017-04-19
  • 通讯作者: 张广积 2389242160@qq.com

Removal of Arsenic from Wastewater by Multi-stage Precipitation

MEN Yu1, LI Hong-mei1, OTGON Nasantogtokh2, ZHANG Guang-ji2*
  

  1. 1. School of Safety and Environmental Engineering, Capital University of Economics and Business, Beijing 100070, China;
    2. Key Lab. of Green Process and Engineering, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, China
  • Received:2016-06-23 Revised:2016-10-17 Online:2017-04-20 Published:2017-04-19
  • Contact: ZHANG Guang-ji 2389242160@qq.com

PDF

摘要： 提出了一种处理低浓度含砷废水的新方法，通过控制pH值进行多级沉淀得到了含水率低、过滤性能良好、性质稳定的固砷沉淀. 使用该法处理1 g/L的低砷废水，在Fe/As摩尔比为7.9、初始pH 1.5、反应温度95℃、终点pH 6.0的条件下的除砷率可达100%.

关键词: 含砷废水, 臭葱石, 针铁矿, 沉淀

Abstract: A new method for the treatment of As-containing wastewater is presented. Multi-stage precipitation by controlling the pH values produces the arsenic bearing precipitation, which has low water content and good filtration behavior. 1 g/L arsenic wastewater treated by this method under the conditions of Fe/As as 7.9, initial pH 1.5, temperatures of 95℃, final pH 6.0, the removal rate of arsenic reached up to 100%.

Key words: arsenic containing wastewater, scorodite, goethite, precipitation