预氧化-钙盐法处理含砷废水试验研究

发布时间：2018-04-22 23:21

  本文选题：砷 + 预氧化　； 参考：《湿法冶金》2017年06期

【摘要】：研究了以CaCl2为沉淀剂从模拟含砷废水中沉淀砷酸钠,考察了溶液pH、温度、n(Ca)/n(As)、反应时间对CaCl2除砷的影响。结果表明:在溶液pH=10、n(Ca)/n(As)=3、反应时间3h、温度25℃条件下,砷去除率可达91.91%;不同条件下,沉淀物种类不同。
[Abstract]:The precipitation of sodium arsenate from arsenic-containing wastewater with CaCl2 as precipitator was studied. The effects of pH, temperature and reaction time on arsenic removal by CaCl2 were investigated. The results show that the removal rate of arsenic can reach 91.91 under the conditions of pH 10 ~ (10) ~ (+) ~ (10) ~ (+) ~ (-) ~ (-) ~ (1), reaction time 3 h and temperature 25 鈩，

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