摘要
采用电芬顿-铁氧化法对老龄垃圾渗滤液进行处理;用铸铁板作牺牲阳极,三维石墨作阴极研究了pH、H2O2浓度、电流密度、板间距、电解质Na2SO4浓度、反应时间对COD的影响;确定了最佳反应条件为pH=3、Na2SO4浓度为0.05 mg·L-1、H2O2浓度为2500 mg·L-1、电极板间距取3.0 cm、电流保持1.8 A即电流密度为60 mA·cm-2,相应的COD去除率最大可达到71.36%,在反应的前30 min内反应速率最快,COD去除率最高可达53.62%.调节溶液pH对垃圾渗滤液的COD去除率进行动力学分析,发现符合二级动力学方程.
In this article, the sacrificial anode electro-Fenton method was used to treat mature landfill leachate, m which the cast iron was used as the sacrificial anode and porous graphite was used as the cathode. A number of factors including initial pH value, HE02 concentration, current density, plate spacing, Na2 SQ electrolyte concentration, reaction time were examined. As the results showed, the highest removal rate of COD was 71.36% , which was obtained when the initial pH value was 3, NaESO4 concentration was 0.05 rag· L-1 , H2O2 concentration was 2500 mg· L-1, the distance between the two electrode plates was 3.0 cm, constant DC current value was 1.8 A and current density was 60 mA· cm-2 Within 30 minutes after the reaction began, the landfill leachate＇ s COD removal efficiency was the fastest,which reached 53.62%. Kinetic analysis found that COD removal of landfill leachate followed the second-order equation.
出处
《环境化学》
CAS
CSCD
北大核心
2013年第10期1937-1942,共6页
Environmental Chemistry
基金
国家自然科学基金项目(21276174)
山西省基础研究计划资助项目(2008011020)
山西省高等学校科技资助项目(20090012)资助
