摘要
通过模拟修复试验,采用高级氧化技术对化工污染场地中的邻苯二甲酸二(2-乙基己基)酯(DEHP)的去除效果进行了研究。结果表明:对于较高初始浓度的DEHP污染土壤,在活化过硫酸钠试剂投加比为5%、水土比为1∶10的条件下对土壤中DEHP的去除效果最好,其去除率为99.6%,Fenton试剂对土壤中DEHP的最高去除率为64.8%;对于较低初始浓度的DEHP污染土壤,在Fenton试剂投加比为4%、水土比为1∶10的条件下对土壤中DEHP的去除效果最好,其去除率为93.9%;但随着氧化试剂投加比例的提升,土壤中DEHP的去除率有所降低。
This paper applies the advanced oxidation processes to studying the removal rate of diethylhexyl phthalate(DEHP)from contaminated soils at the industrial chemical plant site with the use of simulating device.The experimental results show that the removal rate of DEHP in the soil of higher initial concentration reaches the highest at 99.6% when the dosage of activated sodium persulfate is 5%and the water/soil ratio is 1∶10,while the highest removal rate is 64.8% when using the Fenton's reagents.The removal rate of DEHP in the soil of lower initial concentration reaches the highest at 93.9% when the dosage of Fenton's reagents is 4%and the water/soil ratio is 1∶10,and with the oxidant dosage increases,the removal rate of DEHP decreases.
引文
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