| 煤层气产出水的人工湿地构建与处理效果研究 |
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| 引用本文： | 房继德,张洪勋,琚宜文.煤层气产出水的人工湿地构建与处理效果研究[J].环境工程,2017,35(5):20-24. |
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| 作者姓名： | 房继德 张洪勋 琚宜文 |
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| 作者单位： | 中国科学院大学,北京,100049 |
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| 基金项目： | 沁水盆地煤层气田产出水技术试验 |
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| 摘 要： | 针对煤层气田产出水排放所存在的环境隐患,在山西省沁水盆地建立复合型人工湿地处理系统,对比产出水经该系统处理前后的水质,研究人工湿地系统对煤层气产出水的净化效果,结果表明:人工湿地对产出水中污染物发挥了较为稳定的去除效果,出水水质可达农田灌溉水质标准。其中,人工湿地对于产出水中的悬浮物和重金属有良好的去除效果,悬浮物去除率达99.13%,重金属去除率达90%以上;对产出水的pH值具有良好的调节作用,使出水水质趋于中性。研究人工湿地系统的沿程水质变化,发现悬浮物的去除主要发生在阶梯式人工湿地,湿地系统对全盐量的去除效果不明显。该湿地系统由于处理成本低廉,可为野外处理类似高盐度的采矿废水提供借鉴和参考。
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| 关 键 词： | 人工湿地 煤层气产出水 去除率 沿程变化 |
CONSTRUCTED WETLAND CONSTRUCTION FOR COAL-BED METHANE PRODUCED WATER AND RESEARCH ON ITS TREATMENT EFFICIENCY |
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| FANG Ji-de,ZHANG Hong-xun,JU Yi-wen.CONSTRUCTED WETLAND CONSTRUCTION FOR COAL-BED METHANE PRODUCED WATER AND RESEARCH ON ITS TREATMENT EFFICIENCY[J].Environmental Engineering,2017,35(5):20-24. |
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| Authors: | FANG Ji-de ZHANG Hong-xun JU Yi-wen |
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| Abstract: | To reduce the environmental risks of discharge of coal-bed methane produced water,integrated constructed wetland system was built in Qinshui Basin,Shanxi Province.Comparing the quality of coal-bed methane produced water before and after treated by this system,the removal efficience of the constructed wetland was studied.It was concluded that:Constructed wetland had played an important role in removing pollutants,and the quality of effluent water was up to standard.Constructed wetland had good effect on the removal of suspended solids and heavy metal in produced water,the removal rate of suspended solids was 99.13％,and the removal rate of heavy metals reached above 90％;Constructed wetlands had a regulatory effect on pH of the water and could adjust pH to the normal level.The variation of the pollutant concentration along the flow showed that the suspended solids were removed mainly by the stepped constructed wetland,and the total salt content removal efficiency was lower.The constructed wetland system which was of lower cost could provide a reference and basis for the treatment of other high salinity water in the field. |
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| Keywords: | constructed wetland CBM produced water removal efficiency variation along the flow |
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