利用专性杀菌剂进行煤矸石山酸化污染原位控制试验  

Selective Bactericides for at-Source Pollution Control of Acid Coal Waste Piles

作　　者：胡振琪[1] 张明亮[1] 马保国[1] 王萍[1] 

机构地区：[1]中国矿业大学(北京)土地复垦与生态重建研究所,北京100083

出　　处：《环境科学研究》2008年第5期23-26,共4页Research of Environmental Sciences

基　　金：国家高技术研究发展计划(863)项目(2006AA06Z355);教育部新世纪优秀人才计划(NCET-04-0484)

摘　　要：酸性煤矸石山中硫化物的微生物氧化,加剧了煤矸石山酸化、自燃和爆炸等环境污染、灾害.通过分离纯化氧化亚铁硫杆菌,并添加不同剂量的杀菌剂,分析了Fe2+氧化抑制率、杀菌剂的使用效果及最佳使用浓度.结果显示:试验用杀菌剂SLS和SBZ能有效地抑制煤矸石山的酸化.ρ(SLS)为10 mg/L时Fe2+的氧化抑制率达到75.69%;ρ(SBZ)为30 mg/L时Fe2+的氧化抑制率达到75.89%.表明杀菌剂的使用可以促进煤矸石山的酸化污染控制、绿化和生态重建.The microorganism oxidation of sulphide minerals （FeS2） in coal mine wastes results in some environmental problems and disasters such as acid mine drainage （AMD）, spontaneous combustion, and deflagration. The inhibitation of Fe^2＋ oxidation was analyzed by adding different dose of bactericides into the solution of purified Thiobacillusferroxidans. The effects of two bactericides, sodium lauryl sulphate （SIS） and sodium benzoate （SBZ） in inhibiting the activity of Thiobacillus ferroxidans in coal waste piles were researched. The lab experiment showed that both bactericides （SIS and SBZ） are effective in inhibiting the activity of Thiobacillusferroxidans. The inhibition rate of controlling Fe^2＋ oxidation is 75.69 % with SLS at the concentration of 10 rag/L, and that of SBZ is 75.89 % at the concentration of 30 mg/L. Bactericide technology could control the pollution and promote the re-vegetation of coal mine wastes.

关 键 词：酸性煤矸石山 黄铁矿 氧化 杀菌剂 氧化亚铁硫杆菌 

分 类 号：X171.4[环境科学与工程—环境科学]