摘要：
针对水源突发性铬(Ⅵ)污染风险,研究了不同反应条件下硫酸亚铁还原沉淀法对铬(Ⅵ)的去除效果。结果表明,硫酸亚铁还原沉淀法是可行的突发性铬(Ⅵ)污染应急处理方法,反应在较短的时间(10 min)内即可达到平衡;在不改变原水pH(7~8)条件下,当硫酸亚铁投加量为16 mg/L,铬(Ⅵ)污染强度为2.00 mg/L时,铬(Ⅵ)去除率达99.1%,出水铬(Ⅵ)与铁质量浓度分别为0.019、0.021 mg/L,满足《生活饮用水卫生标准》(GB 5749—2006)的要求。
关键词:
突发性铬(Ⅵ)污染,
应急处理,
还原沉淀,
硫酸亚铁
Abstract:
Aiming at the risk of sudden chromium(Ⅵ) pollution in water sources，the removing efficacy of chromium(Ⅵ) by ferrous sulfate reduction-precipitation method under different reaction conditions has been studied. The results show that ferrous sulfate reduction-precipitation method for treating sudden chromium(Ⅵ) pollution is feasible.By using this method，the reaction balance can be reached within a short time (10 min). When the raw water pH keeps at7-8 without any changes，dosages of ferrous sulfate is 16 mg/L，and chromium(Ⅵ) pollution strength 2.00 mg/L，the removing rate of chromium(Ⅵ) reaches 99.1%，and the mass concentrations of effluent chromium(Ⅵ) and iron are0.019 mg/L and 0.021 mg/L，respectively，meeting the requirements of Sanitary Standard of Domestic and Drinking Water (GB 5749—2006).
Key words:
sudden chromium(Ⅵ) pollution；emergent measures,
reduction-precipitation,
ferrous sulfate
中图分类号:
韩晓刚, 黄廷林, 陈秀珍. 硫酸亚铁还原法在突发性铬(Ⅵ)污染应急处理中的应用研究[J]. 工业水处理, 2013, 33(6): 40-46.
Han Xiaogang, Huang Tinglin, Chen Xiuzhen. Study on the application of ferrous sulfate reduction-precipitation methodto the emergent treatment of sudden chromium(Ⅵ) pollution[J]. INDUSTRIAL WATER TREATMENT, 2013, 33(6): 40-46.