强化混凝+气浮+臭氧催化氧化+膜分离+MVR蒸发工艺处理气田开发废水  

Treatment of Gas Field Wastewater by the Process of Enhanced Coagulation+Air Floatation+Ozone Catalytic Oxidation+Membrane Separation+MVR Evaporation

作　　者：杨德敏 张烨 袁建梅 廖新睿 阚涛涛 YANG Demin;ZHANG Ye;YUAN jianmei;LIAO Xinrui;KAN Taotao(National and Local Joint Engineering Research Center of Shale Gas Exploration and Development(Chongqing Institute of Geology and Mineral Resources),Chongqing 401120,China;Key Laboratory of Shale Gas Exploration,Ministry of Natural Resources(Chongqing Institute of Geology and Mineral Resources),Chongqing 401120,China;Chongqing Huadi Resources and Environmental Technology Co.,Ltd,Chongqing 401120,China;College of Environmental Science and Engineering,Ocean University of China,Qingdao 266100,China;CNOOC Energy Technology&Services Engineering Technology Co.,Ltd,Tianjin 300451,China)

机构地区：[1]页岩气勘探开发国家地方联合工程研究中心(重庆地质矿产研究院),重庆401120 [2]自然资源部页岩气资源勘查重点实验室(重庆地质矿产研究院),重庆401120 [3]重庆华地资环科技有限公司,重庆401120 [4]中国海洋大学环境科学与工程学院,山东青岛266100 [5]中海油能源发展股份有限公司工程技术分公司,天津300451

出　　处：《水处理技术》2024年第9期148-151,共4页Technology of Water Treatment

基　　金：重庆市自然科学基金面上项目(cstc2020jcyj-msxmX0128);重庆市技术创新与应用发展重点研发项目(CSTB2022TIAD-KPX0196);重庆市重点产业共性关键技术创新专项项目(cstc2016zdcy-zd20001)。

摘　　要：针对气田开发废水组分复杂、有机污染物浓度高、盐度高、色度高、可生化性差等特点,采用强化混凝+气浮分离+臭氧催化氧化+膜分离+MVR蒸发工艺对气田开发废水进行处理。运行结果表明,该组合工艺对气田开发废水降解性能良好,处理效率高,运行稳定,处理出水COD、氯离子、SS、氨氮、石油类分别为20.5、10.8、9.0、1.5、0.7 mg/L,总去除率分别达到99.77%、99.94%、99.68%、98.73%、99.75%,各项水质指标均优于《污水综合排放标准》(GB 8978-1996)一级排放标准要求(其中氯离子质量浓度优于《四川省水污染物排放标准》(DB 51/190-93)一级标准)。In view of the complexity,high concentration organic pollutant,high salinity,high chroma and poor biodegradability of gas field wastewater,using the enhanced coagulation+air floatation+ozone catalytic oxidation+membrane separation+MVR evaporation process to treat it.The operation results showed that the process had high treatment efficiency,stable operation and treatment for gas field wastewater.The effluent concentrations of COD、chloridion、SS、ammonia nitrogen、petroleum were 20.5 mg/L,10.8 mg/L,9.0 mg/L 1.5 mg/L and 0.7 mg/L respectively,the total removal rates reached 99.77%,99.94%,99.68%,98.73%and 99.75%respectively.The water quality of effluent indicators were better than the first level discharge standards of GB8978-1996"Integrated wastewater discharge standard"(the concentration of chloridion is better than the first level discharge standards of DB 51/190-93).

关 键 词：气田开发废水 强化混凝 臭氧催化氧化 超滤 反渗透 MVR 

分 类 号：X741[环境科学与工程—环境工程]