多级沉淀法处理含砷废水

门玉 李洪枚 OTGON Nasantogtokh 张广积

doi:10.12034/j.issn.1009-606X.216228

过程工程学报 >

2017 , Vol. 17 >Issue 2: 259 - 262

DOI: https://doi.org/10.12034/j.issn.1009-606X.216228

反应与分离

多级沉淀法处理含砷废水

门玉李洪枚 OTGON Nasantogtokh 张广积

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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

网络出版日期: 2017-04-19

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Removal of Arsenic from Wastewater by Multi-stage Precipitation

Yu MEN LI Hong-mei OTGON Nasantogtokh ZHANG Guang-ji

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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 date: 2016-06-23

Revised date: 2016-10-17

Online published: 2017-04-19

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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

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门玉李洪枚 OTGON Nasantogtokh 张广积 . 多级沉淀法处理含砷废水[J]. 过程工程学报, 2017 , 17(2) : 259 -262 . DOI: 10.12034/j.issn.1009-606X.216228

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

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