| 混凝-臭氧/吸附-超滤-反渗透组合工艺对页岩气返排液水质净化效能分析 |
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| 引用本文： | 白玉华,孙玉,吴明火,周云,唐怀彬,曾艳,刘百仓.混凝-臭氧/吸附-超滤-反渗透组合工艺对页岩气返排液水质净化效能分析[J].环境工程,2021,39(7):122-127. |
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| 作者姓名： | 白玉华 孙玉 吴明火 周云 唐怀彬 曾艳 刘百仓 |
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| 作者单位： | 1. 成都大学 基建处, 成都 610106; |
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| 基金项目： | 国家自然科学基金面上项目（51678377，52070134） |
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| 摘 要： | 页岩气返排液中部分小分子有机物如二甲基苄胺（DMBA）、吲哚啉和6-甲基喹啉较难去除，采用混凝-臭氧/吸附-超滤-反渗透组合工艺处理页岩气返排液，探究了其有机、无机组分的去除规律。结果表明:混凝-臭氧-超滤-反渗透组合工艺对离子的去除率为96.7%~99.86%，对DOC和UV254的去除率分别为98.7%和99.13%，对DMBA、吲哚啉和6-甲基喹啉去除率分别为82.02%、98.02%和97.67%；混凝-吸附-超滤-反渗透组合工艺对离子的去除率为95.99%~99.86%，对DOC和UV254的去除率分别为95.31%和97.54%，对DMBA、吲哚啉和6-甲基喹啉去除率分别为70.19%、94.70%和87.93%。混凝-臭氧/吸附-超滤-反渗透工艺可有效去除返排液中的离子、DOC和UV254，对DMBA、吲哚啉和6-甲基喹啉的去除效果显著，有利于返排液的外部回用。
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| 关 键 词： | 页岩气返排液 混凝-臭氧/吸附-超滤-反渗透组合工艺 水质参数 有机物 |
| 收稿时间： | 2020-12-03 |
WATER PURIFICATION EFFICIENCY OF SHALE GAS FLOWBACK WATER BY COAGULATION-OZONE/ADSORPTION-UF-RO COMBINED PROCESS |
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| Institution: | 1. Infrastructure Construction Department, Chengdu University, Chengdu 610106, China;2. College of Architecture and Environment, Sichuan University, Chengdu 610065, China;3. Safety and Environmental Protection Quality Supervision and Testing Research Institute, CNPC Chuanqing Drilling Engineering Co., Ltd, Guanghan 618300, China;4. School of Ocean Science and Technology, Dalian University of Technology, Dalian 116024, China;5. Chengdu Drainage Co., Ltd, Chengdu 610052, China |
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| Abstract: | Some low molecular weight organics, such as dimethylbenzylamine(DMBA), indoline and 6-methylquinoline are difficult to remove from shale gas flowback water(SGFW). The combined process of coagulation-ozonation/adsorption-UF-RO was used to treat the SGFW to explore organic and inorganic components' removal efficiency. The results showed that:the removal rates of ions by coagulation-ozone-UF-RO combination process were 96.7~99.86%, the removal rates of DOC and UV254 were 98.7% and 99.13%, and the removal rates of DMBA, indoline and 6-methylquinoline were 82.02%, 98.02% and 97.67%; the removal rates of ions by coagulation-adsorption-UF-RO combination process were 95.99~99.86%, and the removal rates of DOC and UV254 were 95.99%~99.86%, the removal rates of DMBA, indoline and 6-methylquinoline were 70.19%, 94.70% and 87.93%. Coagulation-ozonation/adsorption-UF-RO process could effectively remove ions, DOC and UV254 in the effluent, and has significant removal effect on DMBA, indoline and 6-methylquinoline. The combined process could effectively ensure the external reuse of SGFW. |
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