ScienceandTechnologyofFoodIndustry 200809Fenton,*,(华南理工大学环境科学与工程学院,广东广州510006) :采用Fenton氧化法深度处理食品添加剂经常规二级处理后的废水。研究了H2O2/CODcr投加量比、Fe2+/H2O2投加量比、反应pH和反应时间对废水CODcr去除效果的影响。结果表明,通过Fenton氧化,可使废水中CODcr由393.2mg/L降到64.3mg/L,去除率达83.6%;处理该废水的最适条件为:H2O2/CODcr=3,Fe2+/H2O2=1,pH4,反应时间60min。:Fenton试剂,化学氧化,食品添加剂,食品废水AdvancedtreatmentoffoodadditiveswastewaterbyFentonreagentoxidationXUJin-hua,WANGXiao-jun*,CHENZhi-wei(SchoolofEnvironmentalScienceEngineering,SouthChinaUniversityofTechnology,Guangzhou510006,China)Abstract:TheadvancedwastewatertreatmentoffoodadditiveswasstudiedbyFentonoxidation.TheeffectsofH2O2/CODcr,Fe2+/H2O2,pHandreactiontimeontheremovalofCODcrwerestudied.TheresultsshowedthatCODcrcouldbereducedfrom393.2mg/Lto64.3mg/L,theremovalofCODcrwas83.6%,byFentonoxidation.Forthiswastewater,theoptimumreactionconditionwere:H2O2/CODcr=3,Fe2+/H2O2=1,pH4,reactiontime60min.Keywords:Fenton;chemicaloxidation;foodadditives;wastewater:TS202.3 :A :1002-0306(2008)09-0126-03:2008-01-07 *通讯联系人:许金花(1983-),女,硕士研究生,研究方向:水污染控制。:广东省科技计划项目(2005B31101001)。 、、、、;、;、(),、、,、。--,CODcr500~300mg/L,,。,。[1]、[2]、Fenton。,Fenton、、、,。D.L.Sedlak[3],pH2~3,Fenton。C.Zhao[4]US-Fenton,95.34%。V.Kavitha[5],FentonTOC92%。,,Fenton,,,,。1 FentonFentonFe2+H2O2,·OH,·OH。·OH,,,、。,Fenton,,,,Fenton,。[4]:Fe2++H2O2Fe3++OH-+·OH(1)R—H+·OHR·+H2O(2)R·+Fe3+Fe2++(3)pH、、H2O2Fe2+[3,4]。,FentonpH3~5,pH,,。,,。,FentonH2O2Fe2+,H2O2·OH126DOI:10.13386/j.issn1002-0306.2008.09.027Vol.29,No.09,2008 200809 (4);Fe2+·OH(5),Fe3+(6)(7)。·OH+H2O2HO2·+H2O(4)Fe2++·OHFe3++OH-(5)Fe3++H2O2Fe2++H++HO2·(6)Fe3++HO2·Fe2++H++O2(7)2 2.1 (30%)、()、、 。2.2 100mL,5%pH,H2O2FeSO4,,,pH8,30min,CODcr。2.3 ,、。--,CODcr500~300mg/L,pH7,。Fenton,PAC,CODcr10%,。3 3.1 H2O2,pH4,Fe2+/H2O2(,)1,30min,H2O2,CODcrCODcrH2O2/CODcr(,),1。1 H2O2/CODcr1,H2O2/CODcr12,CODcr;24,CODcr;H2O2,CODcr,70mg/L,83%。H2O2/CODcr,CODcr72.0%~83.9%,H2O2CODcr。H2O2,·OH,;H2O2,(4),H2O2·OH,·OH,。H2O2/CODcr3,CODcr80mg/L,,H2O2/CODcr3。3.2 Fe2+/H2O2,pH4,H2O2H2O2/CODcr=3,30min,Fe2+/H2O2,CODcrCODcrFe2+/H2O2,2。2 Fe2+/H2O22,Fe2+/H2O2,CODcr,1.0,;Fe2+/H2O2,CODcr,。Fe2+/H2O20.25~3,CODcr59.4%~80.5%,Fe2+/H2O2CODcr,H2O2。(5)~(7),Fe2+·OH,Fe3+,Fe3+H2O2,·OH,。,Fe2+CODcr。Fe2+/H2O21,CODcr80mg/L。3.3 pH,pH3、4、5、6、7,H2O2H2O2/CODcr=3,30min,Fe2+/H2O21,CODcrCODcrpH,3。3 pH3,pH,CODcr,pH57,CODcr。Fenton,Fenton,Fe(Ⅱ)pH,pH;pH127 ScienceandTechnologyofFoodIndustry 200809Fe(Ⅱ)、Fe(Ⅲ),Fenton。pH,CODcr71.2%~80.9%,pHCODcr,H2O2。pH4,,CODcr80mg/L。,pH4,。3.4 ,pH4,H2O2H2O2/CODcr=3,Fe2+/H2O21,15、30、60、90、120min,CODcrCODcr,4。4 4,,CODcr。30min,,CODcr64.3mg/L。,CODcr82.2%~83.6%,。4 4.1 Fenton、,,CODcr83.6%,,COD64.3mg/L。4.2 。,,H2O2/CODcr4,3,CODcr80mg/L,,,3;Fe2+/H2O21;pH4;60min。4.3 ,CODcr,Fe2+/H2O2,H2O2/CODcrpH,。4.4 Fenton,,、、。:[1]赵保国,刘玉存,常双君.超临界水氧化处理二硝基甲苯废水研究[J].火炸药学报,2007,30(2):71~74.[2]刘有智,刁金祥,王贺,等.超重力-臭氧法处理TNT红水的试验研究[J].火炸药学报,2006,29(6):41~44.[3]SedlakDL,AndrenAW.OxidationofchlorobenzenewithFenton'sreagent[J].EnvironSciTechnol,1991,25(4):777~782.[4]ZhaoC,ZhaoD.Degradationofnitrobenzeneinwastewaterbyultrasound/Fenton'sreagent[J].ACSDivEnvironChem,2001,41(2):485~569.[5]KavithaV,PalaniveluK.DegradationofnitrophenolsbyFentonandphoto-Fentonprocesses[J].JPhotochemPhotobiolA:Chem,2005,170(1):83~95.(上接第125页)3 ,,;,。,,TG。,1%0.5%TG-S,35℃2h。:1%(),60℃,0.5%TG-S,,。,60℃,,。:[1]徐幸莲,程巧芬,周光宏.转谷氨酰胺酶对肉块冷黏结性能的影响[J].南京农业大学学报,2002,25(4):87~90.[2]吴立根,王岸娜,翟耀昆.谷氨酰胺转氨酶对猪肉糜失水率和硬度影响的研究[J].食品研究与开发,2007,28(1):184~187.[3]赵剑飞.谷氨酰胺转氨酶的性能及其在肉制品中的应用[J].肉类工业,2005(10):27~28.[4]江波,周红霞.谷氨酰胺转氨酶对火腿肠凝胶性质的影响[J].食品与发酵工业,2001,27(4):1~6.[5]吕心泉,安辛欣,苏燕泉.谷氨酰胺转氨酶在肉制品中的应用研究[J].食品工业科技,2002,23(4):86~88.[6]彭顺清,吴峰,王飞,等.增稠剂与腌制时间对水晶肉冻的影响[J].四川畜牧兽医学院学报,2000,14(4):71~74.128