氨吹脱Fenton氧化预处理阿奇霉素废水的研究董亚荣

3　12环境工程学报Vol.3,No.12200912ChineseJournalofEnvironmentalEngineeringDec.2009-Fenton董亚荣1　苏传华1　王立栋1　程建锋2　杨文玲2　李　萍3(1.,066004;2.,050018;3.,450007)　　-Fenton,。:pH11,160min,30℃,2458.7mg/L421.7mg/L,82.85%;Fenton:pH3、90min、FeSO4·7H2O0.01mol/L、H2O2/Fe2+16∶1,,COD72.6%;,,,0.10.37,。　　　Fenton　　X703.1　　　A　　　1673-9108(2009)12-2245-04StudyonpretreatmentofAzithromycinwastewaterbyammoniablowing-FentonoxidationDongYarong1　SuChuanhua1　WangLidong1　ChengJianfeng2　YangWenling2　LiPing3(1.EnvironmentalManagementCollegeofChina,Qinhuangdao066004,China;2.CollegeofChemicalandPharmaceuticalEngineering,HebeiUniversityofScienceandTechnology,Shijiazhuang050018,China;3.No.6InstituteofProjectPlanningResearchofMachineryIndustry,Zhengzhou450007,China)Abstract　ThewastewaterfromtheproductionofAzithromycinwaspretreatedbyammoniablowing-Fentonoxidation,andtheeffectsofvariousfactorsonthetreatmentefficiencywereinvestigated.Resultsshowedthattheconcentrationofammonia-nitrogendecreasedfrom2458.7mg/Lto421.7mg/L,theremovalratecouldreach82.85%atthetemperatureof30℃,pHvalueof11,blowingtimeof160min.TheoptionalconditionsforFen-tonoxidationprocesswereobtainedastheinitialpHvalueof3,reactiontimeof90min,FeSO4·7H2Odosageof0.01mol/L,H2O2/Fe2+ratioof16∶1,andCODremovalcouldreach72.6%.Afterpretreatment,thequali-tyofwastewaterwaseffectivelyimproved,wastewater'sbiochemicalperformanceincreasedfrom0.1to0.37,whichprovidedadvantagesforthefollowingwastewaterbiochemicaltreatment.Keywords　Azithromycinwastewater;ammoniablowing;Fentonoxidation;pretreatment:2008-12-17;:2009-03-01:(1983～),,,。E-mail:[e-mail]　　[1]15,,、。,,、、、,,,。,,TiO2[2,3]。,。,Fenton,,(NH+4)H2O2,[4]。,2500mg/L,,。,-Fenton,,。31　1.1　。:COD24580mg/L;NH3-N2458.7mg/L;BOD52467.8mg/L;pH10.03。1.2　45WACO;LZB-10;;;;PHS-3C;。H2O2(30%)、FeSO4·7H2O、、,。1.3　4(),800mL,NaOHpH10、11、12、13,1.5m3/h,,800mL。20min1,10,。Fenton,。pH,100mL,1.0mol/L,,H2O2,,NaOHpH7,pH、COD,。1.4　COD;BOD55d;;pH。2　2.1　2.1.1　pH值和吹脱时间的影响24～27℃,22～25℃pH、。,,1。,,pH,,pH=13,pH,pH,。,pH,,pH,pH,,1　pHFig.1　Effectofamine-nitrogenonblowingtimeatdifferentpHvalues。1,pH,,,t=160min,2458.7mg/L421.7mg/L,82.85%。,,,,pH=11,160min。,COD24580mg/L,COD17734.5mg/L,pH9.36。2.1.2　吹脱温度的影响pH=11,160min,,20、25、30、4050℃,73.79%、82.85%、92.12%、91.76%87.67%。,,,30℃,,,(1),。NH+4+OH-NH3←+H2O(1),,,,。35℃,,,,。,30℃。2.2　Fenton2.2.1　废水pH值的影响Fenton,,(·OH),pHFe2+[5]。,pH。0.01mol/L,nH2O2∶nFe2+=16∶1,pH,90min,Fenton,224612:-Fenton2。2　pHCODFig.2　RelationbetweenpHandremovalofCOD2,pH3～4,COD。Fenton,pH,·OH,Fe2+Fe3+,,pHH2O2,,;pH,H+,Fe3+Fe2+,,COD。pHFe2+、Fe3+,Fenton。pH3.0。2.2.2　反应时间的影响Fenton,·OH·OHFenton。pH3.0,nH2O2∶nFe2+=16∶1,Fe2+0.01mol/L,。3。3　CODFig.3　RelationbetweenreactiontimeandremovalofCOD3,,COD,90min,,H2O2,·OH,,,,90min。2.2.3　FeSO4·7H2O投加量的影响Fenton,Fe2+H2O2,FeSO4Fenton。pH3.0,nH2O2∶nFe2+=16∶1,90minFeSO4·7H2O,。4。4　FeSO4·7H2OCODFig.4　RelationbetweenFeSO4·7H2OdosageandremovalofCOD4,FeSO4·7H2O0.01mol/L,COD,Fe2+,[Fe2+],·OH;FeSO4·7H2O0.01mol/L,COD。[Fe2+],·OH,,·OH,·OH(2),·OH;Fe2+·OH,(3)。[Fe2+],[Fe3+],H2O2(4),H2O2[6]。,[Fe2+],,。FeSO4·7H2O0.01mol/L。2·OH+2·OH※2H2O(2)Fe2++·OH※Fe3++OH-(3)Fe3++H2O2※Fe2++HO2·+H+(4)2.2.4　H2O2/Fe2+的投加配比的影响H2O2,,H2O2COD。pH3.0,FeSO4·7H2O0.01mol/L,90min,22473H2O2,H2O2/Fe2+,。5。5　COD(H2O2/Fe2+)Fig.5　RelationbetweentheratioofH2O2toFe2+andremovalofCODH2O2Fenton。5,H2O2/Fe2+COD,16:1,COD。H2O2,·OH,,COD。,H2O2,H2O2,Fe2+Fe3+,Fe3+,H2O2·OH;H2O2·OH,(5),H2O2·OH,H2O2,,COD。·OH+H2O2※H2O+HO2·(5)Cr2O72-+3H2O2+8H+※3Cr3++3O2+7H2O(6),,COD,(6),H2O2COD。H2O2/Fe2+16∶1。2.3　,1m3,1。,5.53/m3,-Fenton。1　Table1　Pharmacycostsfortreatmentofpertonofwater()30%H2O22L/m31.5/L3.0FeSO4·7H2O2.8kg/m30.4/kg1.12H2SO40.6L/m30.7/L0.42NaOH0.3kg/m33.3/kg0.995.533　　(1),pH、。:pH11,160min,30℃,82.8%。,COD24580mg/L,COD17734.5mg/L,pH9.36。(2)Fenton:pH3、90min、FeSO4·7H2O0.01mol/L、H2O2/Fe2+16∶1(H2O220mL/L),,COD17734.5mg/L4860mg/L,72.6%。(3)-Fenton,,。,BOD5/COD0.10.37,。(4)5.53,。[1]BrightG.M.,NagelA.A.,BordnerJ.,etal.Synthesisinvitroandinvivoactivityofnovel9-deoxo-9a-aza-9a-ho-moerythromycinaderivative:Anewclassofmacrolideanti-biotics,theazalides.J.Antibiotics,1988,41:1029～1047[2],,.Fe3+/TiO2.,2007,36(10):1000～1002[3],.TiO2.,2006,29(12):77～79[4],,.H2O2.,2002,28(2):118～119[5],,,.Fenton.,2000,21(3):93～96[6],,,.Fenton.,2004,27(3):105～1072248