摘要
我国石油与石油化工产业规模已稳居世界第二,是最大的工业废水来源。环烷酸(通式C_(n)H_(2n+z)O_(x))来自于原油中的酸性含氧化合物,是石油石化废水特有的一类高毒性难降解化合物,《石油化学工业污染物排放标准》(GB 31571—2015)对其最高排放浓度进行了专门限定。对环烷酸类污染物的高效去除一直是水污染控制领域重要的科研方向与工程热点。综述了近十年来国内外关于石油石化废水环烷酸去除方法及机理的研究进展,对环烷酸在强化分离(混凝和吸附)以及强化化学转化(高级氧化和生物降解)过程中的作用机制进行了归纳总结,并展望了强化环烷酸去除的技术发展方向,以期对提升石油石化行业废水治理技术水平、降低其有毒有害特征污染物排放强度提供参考。
China’s petroleum and petrochemical industry has ranked second in the world,which is the largest source of industrial wastewater.Naphthenic acid(C_(n)H_(2n+z)O_(x))comes from acidic oxygen-containing compounds in crude oil.It is a unique class of highly toxicity and refractory organic contaminants in petrochemical wastewater.The Discharge Standard for Pollutants in Petrochemical Industry(GB 31571—2015)limits its maximum discharge concentration.The efficient removal of naphthenic acids(NAs)has received much attention in engineering research and water pollution control.In this overview,a brief summary in the removal technologies and mechanism of NAs in recent decade was provided.A discussion of consolidate the isolation(coagulation and adsorption)and chemical conversion(advanced oxidation processes and biodegradation)of NAs was conducted.The way to strengthen re-moval of NAs was also proposed.It was hoped to provide reference for improving the wastewater treatment technol-ogy in petroleum and petrochemical industry wastewater and reducing the emission intensity of toxic and harmful characteristic pollutants.
作者
王庆宏
李湲馨
张璇
王雪
朱帅
李琢宇
陈春茂
WANG Qinghong;LI Yuanxin;ZHANG Xuan;WANG Xue;ZHU Shuai;LI Zhuoyu;CHEN Chunmao(State Key Laboratory of Heavy Oil Processing,Beijing Key Laboratory of Oil and Gas Pollution Control,College of Chemical Engineering and Environment,China University of Petroleum(Beijing),Beijing 102249,China;CNPC Research Institute of Safety&Environment Technology,Beijing 102206,China)
出处
《工业水处理》
CAS
CSCD
北大核心
2023年第3期1-14,共14页
Industrial Water Treatment
基金
国家重点研发计划项目(2018YFC1801903-01)
国家自然科学基金面上项目(22278436,22278434)。
关键词
环烷酸
石油石化废水
分离
转化
机理
naphthenic acids
petroleum and petrochemical wastewaters
separation
conversion
mechanism
