有机工业废盐电化学处理研究OA
Study on electrochemical treatment of organic industrial waste salts
文章研究了电化学处理和水洗法对废盐中有机物的降解效果,考察了不同因素对有机物去除效果的影响.结果表明,BDD电化学氧化对废盐中的各种有机物具有较高的降解效率,对 30%浓度的工业氯化钠废盐溶液,电流密度为60 mA/cm2 时,降解 2 h后 TOC去除率可达到 80%以上;降解 4 h后 TOC去除率可达到 98%.含盐废液中的氯化钠浓度较高,电化学氧化初期就会产生大量的 HClO、ClO-等物质,且对有机物的氧化占主导作用,从而使得电流密度和初始pH对 TOC去除的影响减弱.此外,加入掩蔽剂证明了·OH对有机物的间接氧化效果.水洗对废盐中 TOC也具有较好的去除效果,适合作为电化学氧化后的深度处理方法.
For the treatment of organic industrial waste salt,the degradation effects of electrochemical treatment and water washing on organic matter in waste salt were experimentally studied,and the influences of different factors on organic matter removal efficiency were investigated.The results showed that BDD electrochemical oxidation exhibited high degradation efficiency for various organic matters in waste salt.For a 30%industrial sodium chloride waste salt solution,a total organic carbon(TOC)removal rate of more than 80%was achieved after 2 hours of degradation at a current density of 60 mA/cm2,and a TOC removal rate of up to 98%was obtained after 4 hours of degradation.A large amount of HClO,ClO-and other substances were produced in the early stage of electrochemical oxidation due to the high sodium chloride concentration in the saline wastewater,and the oxidation of organic matter played a dominant role,so that the influences of current density and initial pH value on TOC removal were weakened.In addition,the indirect oxidation effect of·OH on organic matter was verified by the addition of a scavenger.Water washing also presented favorable removal efficiency for TOC in waste salt and was proven to be suitable as an advanced treatment method after electrochemical oxidation.
李亚斌;李宝磊;徐勇;谷志强;侯海盟
沈阳环境科学研究院,沈阳 110167沈阳环境科学研究院,沈阳 110167苏州市华测检测技术有限公司,苏州 215134葫芦岛市生态环境保障服务中心,葫芦岛 125000沈阳建筑大学市政与环境工程学院,沈阳 110168
资源环境
工业废盐电化学水洗降解途径
industrial waste saltelectrochemistrywater washingdegradation pathway
《环境保护科学》 2026 (2)
72-75,94,5
辽宁省应用基础研究计划(2023JH2/101300009)沈阳市科技人才专项项目(RC231097)
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