改进型Fenton氧化处理高浓度硝基苯危险废物  

TREATMENT OF HAZARDOUS WASTE CONTAINING HIGH CONCENTRATION NITROBE ZENE BY MODIFIED FENTON REAGENT

作　　者：侯晨晨[1] 刘建国[1] 苏肇基[1] 崔在恩 金宜英[1] 

机构地区：[1]清华大学环境科学与工程系,北京100084

出　　处：《环境工程》2009年第S1期367-370,396,共5页Environmental Engineering

摘　　要：以EDTA钠铁为催化剂,构建可在中性条件下发生反应的改进型Fenton试剂,并以土壤为基质模拟含硝基苯危险废物,研究了改进型Fenton试剂对此类危险废物的处理效果、控制参数及反应过程等。结果表明:硝基苯初始含量15000mg/kg,30%H2O2和50mmol/LEDTA钠铁溶液投加量分别为0.3mL/g、0.1mL/g,含水率为33%时,反应时间60min后,硝基苯的去除率能够达到87%。该处理方法快速、高效,在含硝基苯危险废物处理尤其是事故情况下危险废物的应急治理方面具有较好地应用前景。A modified Fenton reagent in which mild and lasting reaction could happen under neutral condition was established,using Ethylenediaminetetraacetic acid iron(III)sodium salt(NaFeEDTA)as kind of a catalyzer,and effects,influencing factors and control parameters of decontamination of soil containing mitrobezene by this modified Fenton reagent were studied.The results showed that the removal rate of nitrobezene(initial content is 15 000 mg/kg)in soil was 87% under optimal operating conditions:30% H_2O_2 of 0.3mL/g,50 mmol/L NaFeEDTA solution of 0.1 mL/g,moisture content of 33%,and reaction time of 60 min.The modified Fenton oxidation technology is fast,efficient and competitive in the handling of hazardous wastes containing nitrobenzene,especially of emergency cases.

关 键 词：硝基苯 危险废物 改进型Fenton试剂 

分 类 号：X703[环境科学与工程—环境工程]