页岩气压裂返排液的组成及处理技术

发布时间：2018-04-13 14:29

本文选题：页岩气 + 压裂返排液　；参考：《环境科学与技术》2016年S2期

【摘要】：压裂液和地层组成共同影响着页岩气压裂返排液的污染组成,导致返排液成分复杂,处理难度大。为了能选择合理的水处理方法,对国内、外返排液的主要参数进行了对比,对国外返排液中的金属元素和有机污染物组成等进行了分析,发现国内对金属元素和有机污染物组成可供参考的资料很缺乏。目前国外对于压裂返排液主要有2种资源化处理方法:循环利用和处理再利用。金属离子、盐份、细菌和有机物是返排液处理的重难点。针对不同的处理方法和不同的特征污染物,对现行的处理技术进行了分析。指出现行的主要处理工艺虽能使水质达到相关标准,但存在结垢、膜污染、成本高等问题。提出要从源头优化压裂技术,在末端加强水处理工艺,最大程度地实现压裂返排液的资源化。
[Abstract]:The fracturing fluid and formation composition affect the pollution composition of the shale gas fracturing fluid, which leads to the complexity of the backflow composition and the difficulty of treatment.In order to select reasonable water treatment methods, the main parameters of domestic and external effluent were compared, and the composition of metal elements and organic pollutants in reflux solution abroad were analyzed.It is found that there are few references for metal elements and organic pollutants in China.At present, there are two main treatment methods for fracturing fluid reflux in foreign countries: recycling and treatment and reuse.Metal ions, salts, bacteria and organic matter are the most difficult points in the treatment of reflux solution.According to different treatment methods and different characteristic pollutants, the current treatment technology is analyzed.It is pointed out that although the current main treatment process can make the water quality meet the relevant standards, there are problems such as scaling, membrane fouling and high cost.It is suggested that the fracturing technology should be optimized from the source, the water treatment process should be strengthened at the end of the fracturing, and the recovery of fracturing fluid should be realized to the greatest extent.
【作者单位】：四川大学建筑与环境学院;
【基金】：基金项目:(建七666)2016KJT0003-2016S页岩气开采压裂返排液集成处理
【分类号】：X741

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