Fenton欧阳峰1,张丹1,张鹏2 (1.,610031;2.,730000) [目的]探讨采用Fenton氧化预处理天然气净化检修废水的效果。[方法]对天然气净化检修废水进行Fenton试剂氧化预处理,研究了pH、H2O2浓度、n(H2O2)/n(Fe2+)比例、反应温度以及反应时间对COD去除率的影响,确定了反应的最佳条件,并考察了Fenton氧化前后检修废水的生物可降解性。[结果]Fenton氧化试验最佳反应条件为:H2O2投加量0.3mol/L,n(H2O2)/n(Fe2+)=20∶1,初始pH值为3.0,温度70℃的条件下反应40min。在此条件下,COD由18~22g/L下降到3852~4708mg/L,去除率可达78.6%。Fenton氧化预处理后废水的可生化性得到了大大提高,其作为UASB的预处理,效果非常显著。[结论]从环境经济角度分析,Fenton氧化与UASB联合处理后废水不仅处理效果好、成本低,而且控制了污水排污总量,具有广阔的应用前景。 天然气净化检修废水;Fenton氧化;COD去除率 X703 A 0517-6611(2009)03-01301-03StudyonPretreatmentofDetectingWastewaterfromNaturalGasPurificationbyFentonOxidationOUYANGFengetal (CollegeofEnvironmentScienceandEngineering,SouthwestJiaotongUniversality,Chengdu,Sichuan610031)Abstract [Objective]ThestudywastodiscussthepretreatmenteffectofdetectingwastewaterfromnaturalgaspurificationbyFentonoxidation.[Method]ThedetectedwastewaterfromnaturalgaspurificationwasmadefortheFentonoxidationpretreatment,theeffectsofpH,H2O2concn.,theratioofH2O2andFe2+,thereactiontemperatureandtimeontheCODremovalwerestudied,theoptimumreactionconditionwasconfirmedandbiodegradabilityofthedetectedwastewaterbeforeandaftertheFentonoxidationwasinvestigated.[Result]TheoptimalreactionconditionsforFentonoxidationoperatingwereasfollows:theaddingdosageofH2O2was0.3mol/L,theratioofH2O2andFe2+was20∶1,theinitialpHvaluewas3andthetimeofreactionat70℃was40min,underwhich,CODwasdecreasedfrom18-22g/Lto3852-4708mg/L,withCODremovalupto78.6%.Afterthepretreatmentofdetect-edwastewaterfromnaturalgaspurificationbyFentonoxidation,thepropertiesofbiochemistrywereimprovedgreatly,therefore,Fentonoxidation,asapre-treatmentofUASB,broughtaboutaremarkableeffect.[Conclusion]AnalysisfromtheEnvironmenteconomyshowedthatFentonoxidationtreatmentcom-binedwithUASBnotonlygotgoodeffectandlowcost,butalsocouldcontrolthetotalsewagewaterdischarge,whichhadwideapplicationforeground.Keywords Detectingwastewaterfromnaturalgaspurification;Fentonoxidation;CODremovalrate 欧阳峰(1965-),男,江西永新人,副教授,从事水污染控制研究。 2008-11-10 ,,,、[1]。2005《(UASB)》(:20050305-14),:UASBCOD40.0%[2]。Fenton,,UASB。Fenton,。H2O2,(HO·),,[3]。Fenton,pH、H2O2、n(H2O2)/n(Fe2+)()、COD,,UASB。1 1.1 20085,。COD。,,pH9.0,CODCr18~22g/L,BOD5/CODCr=0.168,,,99%。。1.2 :CODCr(GB11914-89);PHS-25();TG628A();DJ1C-100W();HHS-2S()。:FeSO4·7H2O(AR),30%H2O2(AR),H2SO4(AR),NaOH(AR)()。1.3 250ml()500ml,PHS-25H2SO4NaOHpH,FeSO4·7H2O,,H2O2,,COD。2 2.1 ,[4-5],pH、H2O2、n(H2O2)/n(Fe2+)L9(34),60min。1。 1,,H2O2COD,n(H2O2)/n(Fe2+),,pH。:[H2O2]0.3mol/L,n(H2O2)/n(Fe2+)15∶1,70℃,pH3.0。2.2 (1)pHCOD。H2O2,JournalofAnhuiAgri.Sci.2009,37(3):1301-1303 孙红忠 傅真治DOI:10.13989/j.cnki.0517-6611.2009.03.0050.3mol/L,n(H2O2)/n(Fe2+)15∶1,70℃,60min,pHCOD1。1 Table1 ResultoforthogonaltestTestcodepHpHvalueH2O2mol/Ln(H2O2)/n(Fe2+)mol/mol∥℃ReactiontemperatureCOD∥%CODremovalrate1 2.0 0.1 5∶1 5052.122.00.210∶17064.432.00.315∶18570.343.00.110∶18561.553.00.215∶15068.263.00.35∶17069.074.00.115∶17066.084.00.25∶18562.394.00.310∶15066.7K1∥%62.360.161.162.3K2∥%66.265.066.066.5K3∥%65.868.769.064.7R∥%3.98.67.94.2 1,pH3.0COD,pH3.0,pHCOD。Fenton,pHOH·,Fe(Ⅱ)。pH3.0,H+,,Fe(Ⅲ)Fe(Ⅱ)[5]。,pHFenton。1 pHCODFig.1 EffectsofinitialPHvalueonCODremovalrate(2)H2O2COD。pH3.0,n(H2O2)/n(Fe2+)15∶1,70℃,60min,H2O2COD2。,H2O2,COD,0.3mol/L,COD。H2O2,OH·,COD。H2O2Fe2+Fe3+,FentonFe3+,OH·,H2O20.3mol/L。(3)n(H2O2)/n(Fe2+)COD。H2O20.3mol/L,pH3.0,60min,n(H2O2)/n(Fe2+)COD3。2 H2O2CODFig.2 EffectsofH2O2additionamountonCODremovalrate3 n(H2O2)/n(Fe2+)CODFig.3 EffectofnH2O2/nFe2+onCODremovalrate 3,n(H2O2)/n(Fe2+)20∶1COD,78.6%。,Fe2+,,。,Fe2+H2O2,[6]。(4)COD。H2O20.3mol/L,n(H2O2)/n(Fe2+)20∶1,pH3.0,60min,COD4。4 CODFig.4 EffectsofreactiontemperatureonCODremovalrate ,。4,70℃,COD,70℃,,,,H2O2O2H2O,H2O2,。1302 安徽农业科学 2009(5)COD。H2O20.3mol/L,n(H2O2)/n(Fe2+)20∶1,pH3.0,70℃,COD5。5 CODFig.5 EffectsofreactiontimeonCODremovalrate Fenton,5,20minCOD73.5%,,40min,78.6%。,:H2O20.3mol/L,n(H2O2)/n(Fe2+)=20∶1,pH3.0,70℃,40min。FentonCOD18~22g/L3852~4708mg/L,78.6%。,Fenton,,Fen-ton,,UASB。3 (1)Fenton:H2O20.3mol/L,n(H2O2)/n(Fe2+)=20∶1,pH3.0,70℃40min。(2)Fenton,COD18~22g/L3852~4708mg/L,78.6%。,UASB,。pH,UASB,pH6.5~7.5[7]。(3),FentonUASB,,,。[1]欧阳峰,李启彬.某天然气净化废水的厌氧可生物降解性试验研究[J].石油与天然气化工,2007,36(3):251-253.[2]宋旭燕,欧阳峰,潘法康.UASB反应器处理天然气厂检修废水的负荷变化试验研究[J].四川环境,2008,27(1):37-39.[3]伏广龙,徐国想,祝春水,等.Fenton试剂在废水处理中的应用[J].环境科学与管理,2006,31(8):133-135.[4]CHENR,PIGNATELLOJJ.RoleofquinineintermediatesaselectronshuttleinFentonandPhotoassistedFentonoxi-dationsofaromaticcompounds[J].Envi-ronSciTechnol,1997,31(8):2399-2406.[5]陈传好,谢波,任源,等.Fenton试剂处理废水中各影响因子的作用机制[J].环境科学,2000,21(3):93-96.[6]田园,陈广春,王晔.UV-Fenton光催化氧化处理高浓度邻苯二甲酸二辛酯生产废水[J].环境工程学报,2001,1(7):72-73.[7]胡纪萃.废水厌氧生物处理理论与技术[M].北京:中国建筑工业出版社,2003.(上接第1277页),,,。,。、,。、、、,。,。5.5 , ,。,,,。,,、。。,,,、、。,。,。[1]赵其国,周生路,吴绍华,等.中国耕地资源变化及其可持续利用与保护对策[J].土壤学报,2006,43(4):662-672.[2]徐茂,王绪奎,蒋建兴,等.江苏省苏南地区耕地利用变化特征及其对策[J].土壤,2006,38(6):825-829.[3]史娟,张凤荣,赵婷婷.1998~2006年中国耕地资源的时空变化特征[J].资源科学,2008,30(8):1191-1198.[4]朱会义,李秀彬,辛良杰.现阶段我国耕地利用集约度变化及其政策启示[J].自然资源学报,2007,22(6):907-915.[5]王俊玲,吴克宁,吕巧灵.县级耕地利用中存在的问题及对策研究[J].国土资源科技管理,200