电石渣处理煤矿酸性废水技术的研究

THE RESEARCH ON COAL MINE ACID WASTE WATER TREATMENT BY CARBIDE SLAG

利用电石渣对煤矿酸性废水进行处理,达到以废治废的目的。为此对该技术进行研究。在反应停留时间为29 h,pH为6.93时,出水总铁为4.00 mg/L、亚铁为2.01 mg/L、总锰为0.90 mg/L,去除率分别为:总铁:99.04%、亚铁:99.44%、总锰:86.86%。出水指标达GB 20426—2006《煤炭工业污染物排放标准》的要求。

Carbide slag is used for treatment of acid mine wastewater from a coal mine to achieve the purpose of treating waste with waste. So this technology is studied,When the reaction time is 29 h,pH is 6. 93,TFe,Fe2 +and TMn in effluent is 4. 00 mg/L,2. 01 mg/L and 0. 90 mg/L. And the removal rate is that TFe = 99. 04% 、Fe2 += 99. 44%and TMn = 86. 86%,whose indexes can meet the requirements in'Emission Standard for Pollutants from Coal Industry'( GB 20426—2006).