川南页岩气压裂返排液典型有机污染物筛选研究  

Screening of typical organic pollutants in shale gas fracturing flowback water in southern Sichuan basin

作　　者：肖笑 刘文士 刘钰 刘春艳 饶维 吴雁[1] XIAO Xiao;LIU Wenshi;LIU Yu;LIU Chunyan;RAO Wei;WU Yan(School of Chemistry and Chemical Engineering,Southwest Petroleum University,Chengdu Sichuan 610500;PetroChina Southwest Oil and Gas Field Company,Chengdu Sichuan 610056;Sichuan Environmental Engineering Evaluation Center,Chengdu Sichuan 610015)

机构地区：[1]西南石油大学化学化工学院,四川成都610500 [2]中国石油西南油气田公司,四川成都610056 [3]四川省环境工程评估中心,四川成都610015

出　　处：《环境污染与防治》2023年第1期81-85,共5页Environmental Pollution & Control

基　　金：中国石油-西南石油大学创新联合体科技合作项目(No.2020CX020301);四川省自然科学基金面上项目(No.2022NSFSC0220)。

摘　　要：针对页岩气压裂返排液中复杂的有机污染物组成情况,研究了压裂返排液典型有机污染物的筛选机制,为压裂返排液处理外排的氧化阶段工艺选择提供依据。采用综合评分法对四川盆地南部长宁地区页岩气压裂返排液的典型有机污染物进行打分,建立包含毒性效应、生态效应和环境浓度效应3因素的评分机制,引入生物富集因子,辛醇水分配系数和大鼠经口半数致死剂量等参数,计算得出各有机污染物的综合评分,通过聚类分析,筛选出典型有机污染物。结果表明:压裂返排液中筛选出的典型有机污染物包括4-硝基苯酚、苯胺和邻苯二甲酸二丁酯。In view of the complex organic composition of shale gas fracturing flowback water(SGFFW),the screening mechanism of typical organic compounds in SGFFW was studied to provide a basis for process selection in oxidation stage of treatment discharge of SGFFW.Comprehensive scoring method(CSM)was used to establish a scoring mechanism including toxic effect,ecological effect and environmental concentration effect to evaluate the typical organic pollutants in SGFFW in the Changning area of the southern Sichuan basin.Bioconcentration factor,octanol-water partition coefficient and median lethal dose for oral intake in rats were introduced into CSM to calculate the comprehensive scoring result of each organic pollutant.The typical organic pollutants were screened out by cluster analysis.The results showed that the typical organic pollutants screened from SGFFW included 4-nitrophenol,aniline and dibutyl phthalate.

关 键 词：典型有机污染物 页岩气 压裂返排液 综合评分法 

分 类 号：X74[环境科学与工程—环境工程]