Chin. J. Process Eng. ›› 2017, Vol. 17 ›› Issue (2): 259-262.DOI: 10.12034/j.issn.1009-606X.216228
• Reaction & Separation • Previous Articles Next Articles
MEN Yu1, LI Hong-mei1, OTGON Nasantogtokh2, ZHANG Guang-ji2*
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门玉1,李洪枚1,OTGON Nasantogtokh2,张广积2
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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
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
Yu MEN LI Hong-mei OTGON Nasantogtokh ZHANG Guang-ji. Removal of Arsenic from Wastewater by Multi-stage Precipitation[J]. Chin. J. Process Eng., 2017, 17(2): 259-262.
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.
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URL: https://www.jproeng.com/EN/10.12034/j.issn.1009-606X.216228
https://www.jproeng.com/EN/Y2017/V17/I2/259