Fenton氧化去除污染土壤洗脱液中六六六的研究  

Removal of HCHs in Contaminated Soil Eluant by Fenton Oxidation

作　　者：肖鹏飞[1] 宋玉珍[1] 

机构地区：[1]东北林业大学林学院,黑龙江哈尔滨150040

出　　处：《水处理技术》2016年第9期33-36,45,共5页Technology of Water Treatment

基　　金：国家自然科学基金项目(41201307);中央高校基本科研业务费专项资金项目(DL13CB12);2012年度国家留学人员科技活动择优资助项目

摘　　要：以表面活性剂对六六六(六氯化苯,HCHs)污染土壤的洗脱液为目标,研究了Fenton试剂对洗脱液中HCHs的氧化去除效果及影响因素。结果表明,Fenton氧化法可以有效去除洗脱液中的HCHs,其适宜反应条件为:Fe SO_4·7H_2O添加量25 mmol/L,H_2O_2添加量20 m L/L,p H为3,温度30℃,反应时间40 min,该条件下Fenton氧化对污染土壤洗脱液中HCHs的总去除率达到80%以上。Fenton氧化去除效率随着洗脱液中HCHs初始含量的提高而降低。经Fenton氧化处理后,洗脱液中COD去除率达到81.9%,水质及其可生化性得到明显的改善。The removal efficiency of HCHs from the surfactants eluant of contaminated soil by Fenton oxidation was investigated in this study. Fenton regent was effective on oxidation removal of HCHs from the eluant of contaminated soil, and the optimal experiment conditions were as follows： the dosage of FeSO4·7H2O was 25 mmol/L, dosage of H2O2 was 20 mL/L, pH was 3, reaction temperature was 30℃ and reaction time was 40 min. Under these conditions, the removal rate of HCHs by Fenton oxidation was more than 80% from eluant of contaminated soil. Fenton regent showed the higher removal ability from eluant with HCHs of low content than that of high content. The removal rate of COD from eluant was 81.9% by Fenton oxidation, indicated that water quality and biodegradability of eluant were improved after Fenton oxidation treatment.

关 键 词：FENTON氧化 六六六 污染土壤 洗脱液 

分 类 号：X53[环境科学与工程—环境工程]