生活污水为碳源处理硫酸盐矿山废水可行性试验

Feasibility Study of Municipal Sewage as Carbon Source to Dispose the Sulfate Mine Waste

为提高微生物法处理硫酸盐矿山废水的效果以及降低处理成本,采用生活污水做为硫酸盐还原菌(SRB)的有机碳源,重点考察生活污水作为碳源的可行性,通过不同的[COD]/[SO42-]配比找到最佳配比值,以及硫酸盐的还原率、重金属的去除率和有机物的去除情况。结果表明,生活污水作为SRB的有机物碳源是可行的,当[COD]/[SO42-]为2.5时,硫酸根的去除率最高为83.2%,而较低的C/S会影响反应的效果,COD去除率最高为85.2%。而Fe2+不同配比下都达到了96%的去除,Mn2+则是较低C/S下达到87%的去除效果。

In order to improve effect of sulfate mine waste treatment by using the biological process and depress dispose price, use municipal sewage as carbon source of sulphate-reducing bacteria. With emphasis on the feasibility of municipal sewage as carbon source, we find out the best mixture ratio by different C/S ratioes, sulfate reduction rate, disposing effect of heavy mental and organics removement under this ratio. The results show that it is feasible of making municipal sewage as carbon source. When [COD]/[SO4^2-] is 2.5, the top sulfate removing rate is 83. 2%, however,lower C/S can be influenced the effect of reaction,the top COD removing rate is 85.2%. Under differrent C/S, Fe^2＋ all get 96 % removing, Mn^2＋ get 87 % removing at lower C/S.