摘要
利用自制掺La的Ti基体PbO2电极,通过电解产生的羟基自由基氧化处理垃圾渗滤液中的高浓度NH3-N,探讨羟基自由基与NH3-N作用的机理,系统考察了电流密度、pH值、不同电解质等因素对NH3-N去除率的影响。实验证明,随着电流密度的增加,NH3-N的去除率也随之增加;在碱性条件下(pH=10.00)NH3-N的去除效果最好;电解质NaCl比Na2SO4效果好;在电流密度为8.4A/dm2,pH值为10.00,支持电解质NaCl为0.1mol/L时,用掺La的Ti基体PbO2电极电解垃圾渗滤液3h后,NH3-N去除率可以达到100%。
High strength NH3-N in landfill leachate was treated by hydroxy radical oxidation generated from electrolysis with self-prepared PbO： electrode on Ti base mingled with La to enquire into the mechanism ofhydroxy radical action on NH3-N. The effect of current density, pH value and different electrolytes etc. on NH3-N removal rate was investigated systematically. It was shown that NH3-N removal rate increased with the increases of current density; NH3-N removal effect was better under alkaline condition （pH= 10.00）; its removal effect was better when electrolyte being NaCI than when electrolyte being Na2SO4; when current density was 8.4A/dm^2, pH 10.00, NaCl concentration 0.1 mol/L, the landfill leachate was electrolyzed for 3h with PbO2 electrode on Ti base mingled with La, NH3-N removal rate could reach to 100%.
出处
《水处理技术》
CAS
CSCD
北大核心
2007年第11期79-81,88,共4页
Technology of Water Treatment
基金
吉林省环保局项目(2006-11)
