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

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

Reaction & Separation

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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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

Cite this article

Yu MEN LI Hong-mei OTGON Nasantogtokh ZHANG Guang-ji . Removal of Arsenic from Wastewater by Multi-stage Precipitation[J]. The Chinese Journal of Process Engineering, 2017 , 17(2) : 259 -262 . DOI: 10.12034/j.issn.1009-606X.216228

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