摘要
煤层气是优质的能源和化工原料。但在其开采过程中,排出的大量煤层气采出水对土壤和植物的影响以及其相应的评价与修复是一个非常重要的环境问题。文章从煤层气采出水中的元素种类及其形态变化、有机污染物含量变化等方面综述了不同区域煤层气采出水水质状况。在此基础上,分析了煤层气采出水灌溉土壤对土壤和植物的影响。主要包括土壤pH变化;一些元素及离子可能导致土壤发生盐化和钠质化作用及其影响因素;植物生物量和物种多样性的变化及优势种的改变等。针对不同区域煤层气采出水的相关水质状况以及其对土壤及植物的影响,提出了相应的控制修复措施。最后,提出了未来该领域需要加强研究的方面,以期为未来合理、安全地利用煤层气采出水提供相关参考。
Coal bed methane（CBM） is high quality energy and chemical raw material.However,in the mining process,the impact of a large number of CBM produced water on soil and plants is one of the most important environmental issues.Concentration and speciation of elements as well as concentration of organic pollutants in CBM produced water were reviewed,based on which the plant and soil response to irrigation by CBM produced water were also analyzed,including soil pH,soil salinization and sodification,plant mass and species diversity.The related remediation technologies and research in the field were also discussed,which would provide valuable reference information on safe utilization of CBM produced water.
出处
《环境科学与技术》
CAS
CSCD
北大核心
2011年第11期25-30,共6页
Environmental Science & Technology
基金
国家科技重大专项课题(2009ZX05039-003)
关键词
煤层气采出水
土壤
植物
环境影响
coal bed methane （CBM） produced water
soil
plant
environmental impact
