过硫酸盐氧化处理含萘磺酸废水  

Treatment of Wastewater Containing Naphthalene Sulfonic Acid by Persulfate Oxidation

作　　者：章晋门 卢钧 刘晓琛 陈泉源[1,2] ZHANG Jin-men;LU Jun;LIU Xiao-chen;CHEN Quan-yuan(College of Environmental Science and Engineering,Donghua University,Shanghai 201620,China;Shanghai Institute of Pollution Control and Ecological Safely,Shanghai 200092,China)

机构地区：[1]东华大学环境科学与工程学院,上海201620 [2]上海市污染防治与生态安全研究院,上海200092

出　　处：《环境科学》2020年第9期4133-4140,共8页Environmental Science

基　　金：国家重点研发计划项目(2016YFC0400502);中央高校基本科研专项(2232018D3-43);中央高校基本科研业务费专项(19D111321,19D311306,20D111318)。

摘　　要：萘磺酸在工业上应用广泛.本文选取H酸(1-氨基-8-萘酚-3,6-二磺酸)为特征污染物,比较了碱活化、热活化以及碱热复合活化过硫酸盐(PS)降解H酸的效果并讨论了其他因素对复合活化的影响.结果表明,碱活化中氧化钙投加量从0增加至1250 mg·L^-1,反应100 min后H酸的去除率由42.5%升至82.8%.热活化中H酸的去除率与温度正相关,在65℃时H酸去除率为77.5%,反应的活化能为37.85 kJ·mol^-1.复合活化虽然加快了反应速率,但高温下PS迅速分解导致对H酸的降解效果不如单一热活化,PS浓度的改变并未显著提高H酸的去除率,无机阴离子CO32-不利于H酸的去除.复合活化对H酸的矿化效果不理想,TOC去除率仅为16%.利用GC-MS鉴定出H酸的降解中间产物主要是对-苯二甲酸,表明萘环打开后可能生成了邻-苯二甲酸酐.Naphthalene sulfonic acid is widely used in the industry.In this study,H acid(1-amino-8-naphthol-3,6-disulfonic acid)was selected as the characteristic pollutant,and the alkali-activated,thermally-activated,and alkali-heat-complex activated persulfate(PS)degradation of H acid was analyzed.The effects of other factors on complex activation were discussed.The experimental results showed that with the addition of calcium oxide from 0 to 1250 mg·L^-1,the H acid removal rate increased from 42.5%to 82.8%after 100 min of reaction.The removal rate of H acid in thermal activation is positively correlated with temperature.The removal rate of H acid at 65℃is 77.5%,and the apparent activation energy is 37.85 kJ·mol^-1.Although composite activation speeds up the reaction rate,rapid degradation of PS at high temperatures caused the degradation of H acid to be worse than single thermal activation.The change in PS concentration did not significantly improve the removal rate of H acid,and the inorganic anion CO32-was not conducive to the removal of H acid.Compound activation is not ideal for the mineralization of H acid,and the removal rate of TOC is only 16%.GC-MS identified the degradation product of H acid as terephthalic acid,indicating that phthalic anhydride may be formed after the naphthalene ring is opened.

关 键 词：H酸 过硫酸盐 碱活化 热活化 氧化 

分 类 号：X703.1[环境科学与工程—环境工程]