Fenton试剂预处理化工综合废水的研究  

Study on chemical integrated wastewater pretreatment using Fenton reagent

作　　者：郑先强[1] 尤特[2] 唐运平[1,2] 

机构地区：[1]天津市环境保护科学研究院,天津300191 [2]天津工业大学环境与化学工程学院,天津300160

出　　处：《环境工程学报》2011年第10期2226-2232,共7页Chinese Journal of Environmental Engineering

基　　金：国家水体污染控制与治理科技重大专项(2008ZX07314-001)

摘　　要：以化学工业园区废水为研究对象初步研究了Fenton试剂预处理化工综合废水时各影响因子的作用机制,通过正交实验确定了Fenton反应的最佳操作条件为:反应时间70 min,硫酸亚铁投加量为2.6 mmol/L,温度为40℃,初始pH3.5,二价铁离子和过氧化氢的摩尔比为1∶8时,COD的去除率可达到60%以上,B/C值可提升20%。实验发现混合离子催化剂可提高Fenton对有机物的降解能力。混合离子最佳复配比例为Fe(Ⅱ)∶Cu(Ⅱ)∶Mn(Ⅱ)=2∶1∶2,并分析了单一离子催化剂和混合离子催化剂对溶液中残留过氧化氢的影响,提出了起关键作用的锰离子。The mechanisms of affecting factors in treating chemical industry park wastewater by Fenton reagent were preliminarily investigated.The optimal operating conditions determined by orthogonal experiments are as follows： FeSO4 concentration 2.6 mmol/L,molar ratio ferrous ion to hydrogen peroxide 1∶8,40 ℃,70 min and pH 3.5.Under these conditions,the COD removal rate was more than 60% and B/C improved by 20%.Furthermore,the degradation ability of Fenton reagent to organic compounds can be enhanced due to the mixed ion catalyst with the optimum compound proportion for Fe（Ⅱ）∶Cu（Ⅱ）∶Mn（Ⅱ）=2∶1∶2.The effects of single-ion and mixed-ion catalysts on hydrogen peroxide residual in solution were analyzed and the key role of manganous ion was proposed.

关 键 词：FENTON试剂 化工综合废水 预处理 混合离子催化剂 

分 类 号：X703[环境科学与工程—环境工程]