| 煤系“三气”合采产出水多元膜回用的预处理优化 |
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| 引用本文： | 谢友友,琚宜文,刘新春,刘研萍,饶玉凤,兰淼,琚丽婷.煤系“三气”合采产出水多元膜回用的预处理优化[J].环境工程,2021,39(3):61-67. |
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| 作者姓名： | 谢友友 琚宜文 刘新春 刘研萍 饶玉凤 兰淼 琚丽婷 |
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| 作者单位： | 1. 中联煤层气有限责任公司, 北京 100015; |
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| 基金项目： | 国家科技重大专项（2016ZX05066006，2016ZX05066003）。 |
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| 摘 要： | 以煤层气、致密砂岩气和页岩气共存为特征的煤系"三气"是一类重要的非常规天然气资源。针对鄂尔多斯盆地东北缘临兴区块煤系"三气"合采产出水的超高盐度和高浊度等特点，首先研究了原位水样的处理工艺，然后采用加载絮凝-微电解-纳滤-反渗透方法进行了中试处理，并对预处理阶段进行了优化试验。研究结果表明:加载絮凝单元出水浊度和ρ（COD）分别为11.66 NTU和1711 mg/L，去除率分别为98.9%和34.57%；微电解单元的COD去除率为66.9%，出水电导率为52.5 mS/cm。再经过纳滤-反渗透处理后，出水可达到GB 5084—2005《农田灌溉水质标准》旱作标准。
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| 关 键 词： | 煤系"三气" 产出水 加载絮凝 微电解 膜处理 |
| 收稿时间： | 2020-03-12 |
PRETREATMENT OPTIMIZATION FOR MULTIPLE MEMBRANE TREATMENT AND REUSE OF WATER PROCED PRODUCED BY THREE-GAS CO-PRODUCTION FROM COAL MEASURES |
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| Institution: | 1. China United Coalbed Methane Co., Ltd, Beijing 100015, China;2. Key Laboratory of Computational Geodynamics, College of Earth and Planetary Sciences, University of Chinese Academy of Sciences, Beijing 100049, China;3. College of Resources and Environment, University of Chinese Academy of Sciences, Beijing 100049, China;4. Department of Environmental Science and Engineering, Beijing University of Chemical Technology, Beijing 100029, China |
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| Abstract: | Three natural gases in coal measure, including coalbed methane (CBM), tight sandstone gas and shale gas, are important unconventional gas resources. Firstly, the treatment process of the collected in-situ water sample was studied, according to the characteristics of ultra-high salinity and high turbidity of the water produced by three-gas co-production from coal measures in Linxing block on the eastern edge of the Erdos basin. Then, pilot treatment was carried out by the process of loading flocculation-microelectrolysis-nanofiltration-reverse osmosis for CBM produced water, on basis of characteristics of high salinity and turbidity. The process parameters and effect of pretreatment units was optimized. The effluent turbidity and COD of the loaded flocculation was 11.66 NTU and 1711 mg/L, respectively, and the removal rates were 98.9% and 34.57%, respectively. The removal of COD was 66.9% and the conductivity of effluent was 52.5 mS/cm by micro electrolysis unit. After NF-RO treatment, the effluent met the dry farming standard of irrigation water quality standard (GB 5084-2005). |
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