垃圾渗滤液氨态氮与挥发性脂肪酸馏出规律研究  

Study on Distilled Regulations of NH_4^+-N and VFA of Landfill Leachate

作　　者：周效志[1] 桑树勋[1] 曹丽文[1] 刘会虎[1] 

机构地区：[1]中国矿业大学资源与地球科学学院,江苏徐州221008

出　　处：《环境监测管理与技术》2008年第6期59-61,共3页The Administration and Technique of Environmental Monitoring

基　　金：教育部新世纪优秀人才支持计划基金资助项目(NCET-05-0479);江苏省"青蓝工程"高校中青年学术带头人基金资助项目

摘　　要：为了提高垃圾渗滤液氨态氮(NH4+-N)与挥发性脂肪酸(VFA)联合滴定分析结果的准确性,试验研究了NH4+-N与VFA的馏出规律,并在此基础上对联合滴定方法的优化进行了探讨。结果表明:测得的NH4+-N质量浓度(Y1)、VFA浓度(Y2)与馏出液体积(X)分别符合函数关系式;联合滴定分析过程中,渗滤液样品NH4+-N质量浓度应稀释至150 mg/L～200 mg/L,NH4+-N馏出液应大于蒸馏液体积的60%;VFA分析应采用"一次蒸馏80%+二次蒸馏"的方式,且VFA二次馏出液应大于蒸馏液体积的75%(相对误差限εr<5%)。In order to improve the accuracies of NH4 ^＋- N and VFA combined titrimetric analysis of landfill leachate, the experiments of distilling rules of NH4^＋ - N and VFA was performed, and the optimization methods of the combined titrimetric analysis was discussed. The results showed that the measured NH4^＋ - N mass concentration （ Y1 ）, VFA molar concentration （ Y2 ） and distillate volume （X） were in line with the relation. In the process of combined titrimetric analysis, the best results were obtained if NH4^＋ - N mass concentration of leachate samples were diluted to 150 mg/L -200 mg/L, the volume of NH4^＋ -N distillate was over 60% of the distilland volume. The relative error limit εr was less than 5% if the way of ＂first distillation 80% plus second distillation＂ was used to analyze VFA molar concentration, and the volume of VFA distillate was over 75% of the distilland volume in the second distillation.

关 键 词：垃圾渗滤液 氨态氮 挥发性脂肪酸 馏出规律 联合滴定法 

分 类 号：O655.2[理学—分析化学]