硫酸盐还原菌处理重金属离子

Study on Removal of the Heavy-Metal by Sulfate Reducing Bacteria

以Cu2+、Pb2+、Zn2+、Cd2+、Fe2+的去除率为指标,研究了初始pH值、培养温度、时间、重金属初始浓度对硫酸盐还原菌处理重金属离子效果的影响。结果表明,硫酸盐还原菌的最佳处理条件为:pH值为7,温度为35℃,时间为6 d,且初始浓度越低去除率越高。在此条件下,各重金属离子去除率分别达到99.00%、96.70%、92.24%、98.00%、93.80%。实验数据可为硫酸盐还原菌处理酸性矿井废水重金属污染提供技术支持。

The effect of the initial pH value,culture temperature,time,heavy-metal initial concentration were researched at the index of Cd2+,Cu2+,Pb2+,Zn2+ and Fe2+ removal rate.The results show that the best process condition was the initial pH value of 7;the culture temperature of 35℃ for 6 days,and the higher removal rate,the lower initial concentration,under which condition,the removal rates of heavy-metal were up to 99.00%,96.70%,92.24%,98.00%,93.80%.The test data can provide technical support for removing heavy-metal from acidic mine waste water by sulfate reducing bacteria.