潘北矿–580m水平出水点H_2S成因分析及处理试验
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摘要
安微淮南潘北煤矿–580 m水平探4孔与ES1C3上3-1孔在疏放太原组灰岩水时带有臭鸡蛋气味,且水流过程中伴有白色絮状漂浮物。通过采集水样,测试了出水孔水质及气体,分析了其形成原因。结果表明:气体为H2S,两出水孔的水质均具有低SO2–4、高HCO–3、弱碱性特征,白色絮状物为有机质和钙、镁物质的结合,该异常现象是脱硫酸与脱碳酸共同作用的结果。为及时处理异味对井下作业环境的影响,采用纳米二氧化钛–紫外光催化氧化法在室内对水进行硫化氢去除试验,其去除率为80%~90%,效果显著。
When drained from horizontal drainage holes 4 and ES1C3 3-1 in aquifer of Taiyuan Formation limestone, at –580 m level in Panbei coal mine, water taste smells like rotten eggs, and moreover there is white flocculent flotage. By collecting water samples, the water quality and gas were tested, and the genetic mechanism was analyzed. The results indicate that the gas in the water is H2 S, and the water from two holes has similar characteristics such as low SO2– 4, high HCO– 3, lower salinity and low alkalinity, and white flotage material is composed of organic and calcium– magnesium material.Such an abnormal phenomenon was resulted from actions of desulfation and decarbonation. In order to deal with harmful gases under mine working environment immediately, experiment on disposing H2 S has been performed with nanometer titanium dioxide(Ti O2) and UV light catalytic oxidation. The results show that removal ratio of H2 S is close to 80~90 percent.
When drained from horizontal drainage holes 4 and ES1C3 3-1 in aquifer of Taiyuan Formation limestone, at –580 m level in Panbei coal mine, water taste smells like rotten eggs, and moreover there is white flocculent flotage. By collecting water samples, the water quality and gas were tested, and the genetic mechanism was analyzed. The results indicate that the gas in the water is H2 S, and the water from two holes has similar characteristics such as low SO2– 4, high HCO– 3, lower salinity and low alkalinity, and white flotage material is composed of organic and calcium– magnesium material.Such an abnormal phenomenon was resulted from actions of desulfation and decarbonation. In order to deal with harmful gases under mine working environment immediately, experiment on disposing H2 S has been performed with nanometer titanium dioxide(Ti O2) and UV light catalytic oxidation. The results show that removal ratio of H2 S is close to 80~90 percent.
引文
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[4]蒲治国,施安才,王毅,等.灰岩防治水的示踪试验方法研究[J].河南理工大学学报:自然科学版,2012,31(6):641–644.
[5]宋传中,朱光,刘国生,等.淮南煤田的构造厘定及动力学控制[J].煤田地质与勘探,2005,33(1):11–15.
[6]刘平,胡敏.煤矿硫化氢的形成机理及综合防治措施[J].中州煤炭,2009(5):69–70.
[7]杨策,钟宁宁,陈党义,等.煤矿开采过程中地下水地球化学环境变迁机制探讨[J].矿业安全与环保,2006,33(2):30–32.
[8]戴金星,胡见义,贾承造,等.科学安全勘探开发高硫化氢天然气田的建议[J].石油勘探与开发,2004,31(2):1–4.
[9]崔中杰,傅雪海,刘文平,等.煤矿瓦斯中H2S的成因危害与防治[J].煤矿安全,2006,37(9):45–47.
[10]葛晓光,杨柳,叶永康,等.煤系地下水的硫酸盐还原菌与水文地球化学效应[J].煤炭学报,2012,37(2):237–241.
[11]沈照理,朱宛华,钟佐燊,等.水文地球化学基础[M].北京:地质出版社,1993.
[12]邱真真,赵一先,杜娟,等.紫外光催化处理硫化氢研究[J].石油化工,2005,34(2):498–500.