O_(3)/H_(2)O_(2)氧化页岩气产出水有机物动力学及机理研究  

Study on the Kinetics and Mechanism of Organic Contaminants Removal in Shale Gas Produced Water Via O_(3)/H_(2)O_(2) Oxidation Process

作　　者：陈天欣 赵靓[1,2] 周微 梁朝程[1,2] 徐炳科 王越 徐波[1,2] 刘钰 Chen Tianxin;Zhao Liang;Zhou Wei;Liang Chaocheng;Xu Bingke;Wang Yue;Xu Bo;Liu Yu(Safety,Environment and Technology Supervision Research Institute of PetroChina Southwest Oil and Gas Field Company;Sichuan Key Laboratory of Shale Gas Evaluation and Exploitation;Southwest Petroleum University)

机构地区：[1]中国石油西南油气田公司安全环保与技术监督研究院 [2]页岩气评价与开采四川省重点实验室 [3]西南石油大学

出　　处：《油气田环境保护》2021年第6期22-27,共6页Environmental Protection of Oil & Gas Fields

基　　金：中国石油天然气股份有限公司重大科技专项“西南油气田天然气上产300亿立方米关键技术研究与应用”(编号:2016E-06)。

摘　　要：对O_(3)/H_(2)O_(2)氧化页岩气产出水降解有机物动力学、特征污染物苯胺降解动力学及机理进行实验分析,研究结果表明:页岩气产出水有机物、苯胺降解符合一级反应动力学;臭氧分子的分解符合零级反应动力学。通过液相色谱-质谱(LC-MS)分析O_(3)/H_(2)O_(2)氧化苯胺降解过程中间产物,发现O_(3)/H_(2)O_(2)氧化法不能完全将页岩气产出水矿化为二氧化碳和水,只是将复杂有机物分子转化为结构简单的直链烷烃或者羧酸类物质,需与其他氧化方式相结合才可将有机物完全去除,并提出了降解返排液中苯胺的两条可能途径,为O_(3)/H_(2)O_(2)氧化工艺实际应用提供理论依据。The study mainly analyzed the kinetics of degradation of organics in O_(3)/H_(2)O_(2) oxidized shale gas produced water,the kinetics and mechanism of aniline degradation of characteristic pollutants were analyzed experimentally,and the research results showed that:shale gas produced water and aniline degradation conform to first-order kinetics;ozone the decomposition of molecules conforms to the zero-order reaction kinetics;the intermediate product of O_(3)/H_(2)O_(2) oxidation aniline degradation process is analyzed by liquid chromatography-mass spectrometry(LC-MS),and it is found that O_(3)/H_(2)O_(2) oxidation cannot completely mineralize shale gas produced water into carbon dioxide and water,it only converts complex organic molecules into straight-chain alkanes or carboxylic acids with simple structure.It needs to be combined with other oxidation methods to completely remove the organics.Two possible possibilities for degrading aniline in the flowback liquid are proposed.It provides a theoretical basis for the actual process application of O_(3)/H_(2)O_(2) oxidation.

关 键 词：O_(3)/H_(2)O_(2)氧化 页岩气产出水 苯胺 降解途径 

分 类 号：X741[环境科学与工程—环境工程]