摘要： 针对自燃煤矸石和煤矿废水污染环境的问题，采用单因素试验和对比试验探究了SRB协同自燃煤矸石对煤矿废水中Fe²⁺、Mn²⁺、SO₄^2-的去除效果。结果表明，相比于自燃煤矸石和NaOH改性自燃煤矸石，SRB协同自燃煤矸石处理煤矿废水效果更佳。当振荡时间为180 min，SRB协同自燃煤矸石投加量为40 g/L，废水初始pH=5，振荡频率为150 r/min，粒径为0.125～0.200 mm时，Fe²⁺、Mn²⁺、SO₄^2-去除率分别可达到84.38%、83.33%和77.85%。SRB改变了煤矸石的矿物组成，促进了其对废水中污染物的去除。

关键词: 硫酸盐还原菌, 自燃煤矸石, 煤矿废水

Abstract: Aiming at the environmental pollution problems caused by self-ignited coal gangue and wastewater from coal mine,the removing effects of Fe²⁺,Mn²⁺ and SO₄^2- in wastewater from coal mines,by SRB synergized with the self-ignited coal gangue using single factor and contrast tests has been investigated. The results show that the treatment eff-ect of coal mine wastewater by SRB synergized with self-ignited coal gangue is better than that of self-ignited coal gan-gue and NaOH modified self-ignited coal gangue. When the optimum removing conditions are as follows:oscillation time is 180 min,dosage of SRB synergized with self-ignited coal gangue 40 g/L,initial pH of wastewater 5,oscillation frequency 150 r/min,and particle size 0.125-0.200 mm,the removing rates of Fe²⁺,Mn²⁺ and SO₄^2- can reach 84.38%,83.33% and 77.85%,respectively. SRB has changed the mineral constituents of coal gangue,and facilitated its re-moving effect on the pollutants in wastewater.

Key words: sulfate-reducing bacteria, self-ignited coal gangue, wastewater from coal mines

中图分类号: 

• X703