CODN对亚硝酸盐型同步硝化反硝化脱氮的影响范建华

　6　52007　10　()JournalofGuangzhouUniversity(NaturalScienceEdition)Vol.6　No.5Oct.　2007　　:2006-10-09;　:2006-11-19　　:(50578044);(2004B33301006);(2004J1—C0051)　　:(1981-),,,.:1671-4229(2007)05-0055-05COD/N对亚硝酸盐型同步硝化反硝化脱氮的影响范建华1,2,张朝升1,方　茜1,张可方1(1.,　510006;2.,　130012)　:采用序批式活性污泥法,对人工配制的城市污水,通过控制泥龄成功实现亚硝酸盐型同步硝化反硝化,并考察了不同COD/N对亚硝酸盐型同步硝化反硝化效果的影响.试验结果显示:适宜的泥龄下,在控制适宜的pH、DO及COD:N为6.5左右的条件下,COD、氨氮和总氮的去除率分别可达90%～95%、99%左右、90%以上.因此,适宜的泥龄时,控制反应器内适宜的COD/N,可以使亚硝酸盐型同步硝化反硝化取得很好的效果.:序批式活性污泥法;泥龄;亚硝酸盐型同步硝化反硝化:X52　　　:A　　.,,,.,(),40%.COD/N,.AbelingSeyfried(1992),[1].(NH4-N)75%.,.,、pH、、DO()、,、pH、、DO.HyungseokYoo(1999),,COD/N=5∶110∶1,.(2005),,SBRDO0.5mg·L-1,[2].DO,15d,.NH4-N40mg·L-1,COD/N:3、6.5、9.1　试验材料和方法1.1　　　SBR,1.10L.SBR,.,,..1　SBRFig.1　ConstitutionofSBR1.SBR2.pH3.DO4.ORP5.6.7.8.9.pH10.　　()6　1.2　,、NH4Cl、KH2PO4,1.NaHCO3pH.pH7.3～7.5,7.0～7.2.17～20℃.1　Table1　Dosageofchemicalmedicineintherawwastewater/(g·10L-1)NH4Cl1.600KH2PO40.200FeSO40.012MgSO40.600CaSO40.3201.3　　　.2,.2　Table2　OperationalmodeofSBRprocess/h——、4.01.00.5　　.:;(NO-2N):N—1—;(NO-3-N):;(TN):TOC—VCPH.(COD):;.pH、DO、ORP()WTWPH/Oxi340ipH.2　试验结果与讨论2.1　COD/N2COD/N,0～9、、0.5h、1.0h、1.5h、2.0h、2.5h、3.0h、3.5h、4.0h.　　40mg·L-1NH+4-N、0.6～1.8mg·L-1NO-2-N、1.8～2.4mg·L-1NO-3-N.1/3NH+4-N,NO-3-N,NO+2-N.2　COD/NFig.2　TransformationofnitrogeninaperiodwithdifferentCOD:nitrogenratiosinrawwastewaterNH+4-N、NO-3-N,NH+4-N25～27.5mg·L-1,NO-3-N0.8mg·L-1,NO-2-N,2.,.,DO,DO.,,NO-3-NNO-2-N,TN.,TN.,,BOD5∶N∶P=100∶5∶1.,CODTN2.TN.2,COD/N,NO-2-NNO-2-NNO-3-N50%,.56　5:COD/N　　　,DOCOD/N,NH+4-NCOD/N,,DO,,NH+4-N.,,,NO-2-NCOD/N.2.2　pH、DO、ORPCODpH、DO、ORPSBR、[3].3、pH、DO、ORP,0.,,pH,,pH.　　,pH、DO、ORP,3,3.　　Ⅰ:,ORP,pH.,DO,0.1mg·L-1,3.3,,COD.2,NO-2-NNO-3-N,1.5～4mg·L-1,COD,,.,.ORP.COD,COD,—[4],,ORP.DOORP,ORPDO(ORP=a+bln[O2]):DO,ORP,ORPDO,ORPDO.pH3:①,;②CO2,,CO2;③3　COD/NpH、DO、ORPFig.3　VarietyofpH、DOandORPwithdifferentCOD:nitro-genraiosinrawwastewaterH+.Ⅱ:COD/N3,pH;COD/N6.5、9,pH.ORP,DO..,,,DO.COD,,,,DO,.(NO-2)DO,,Barnard“3”[5],.2,COD/N6.5、9NH+4-N57　　()6　15%、20%NO-2,,.COD/N3,60%NH+4-NNO-2-N,40%.,,.,,,,ORP.ORP,,:①;②DO、,,;③DO.pH:①;②;③,;④CO2,CO2,pH;⑤DO,H+.COD/N6.5、9,①②pH,,,pH.COD/N3,18minⅡ,pHⅠpH①②ⅡpH①,pH,pHCOD/N6.5、9.Ⅲ:pH,ORP,DO.2(a)(b),NH+4-N,,.,,ORP.,,TN.DO,,、.DO,.COD/N9NH+4-N.2.3　NH-4-N、TNCOD/NCOD/N.4COD/N2NH+4-N、TNCOD/N.,COD/N3、6.5、9,NH+4-N99%、99%、75%～80%,TN63%～69%、90%～95%、75%～80%.　　4,COD/N36.5,NH+4-N99%.COD/N9,NH+4-N4　COD/NNH+4-N、TNFig.4　RemovalratesofNH+4-NandTNwithdifferentCOD:nitrogenraiosinrawwastewater80%.,COD/N,DO.,23,COD/N36.5,DO;COD/N9,DO,NH+4-N,NH+4-N.COD/N36.5,TN63%～69%90%,COD/N9,TN75%～80%.COD/N,DO(3(b)(c)),NO-2-N,2(b)(c).DO.COD/N6.5,DO,NO-2-N,COD/N6.5TN.COD/N9,DO,NH+4-N,TN.,COD/N9TN.4,COD/N.:①,40%[6];②COD/N,NO-2-N.COD/N6.5TN90%,:①NO-2-N;②DO,;③pH7～7.5,pH[5];④20min,,0.2～1.3mg·L-1NO-2-N(2(c)),TN.3　结　论(1),NH+4-N40mg·L-158　5:COD/N　　　,COD/N3、6.5、9,COD/N6.5,TN,90%.,COD/N6.5,.(2),,,,TN.:[1]　AbelingV,SeyfriedCF.Anaerobic-aerobictreatmentofhigh-strengthammoniumwastewaternitrogenremoval[J].WaterScienceTechnology,1992,26:1007-1015.[2]　,,.[J].,2005,56(4):699-704.GAODa-wen,PENGYong-zhen,WANGShu-ying.Nitrogenremovalfromhighnitrogensoybeanwastewaterbysimultaneousnitrificationanddenitrificationvianitrite[J].JournalofChemicalIndustryandEngineering,2005,56(4):699-704.[3]　,,,.DO、ORP、pHSBR[J].,2001,17(4):6-11.GAOJing-feng,PENGYong-zhen,WANGShu-ying,etal.Usingdissolvedoxygen,oxidationreductionpotentialandpHvalueforcontrolnitrogenremovalinSBRprocess[J].ChinaWaterWastewater,2001,17(4):6-11.[4]　CartaF,BeunJJ,VanLoosdrechtMCM,etal.SimultaneousstorageanddegradationofPHBandglycogeninactivatedsludgecultures[J].WaterResearch,2001,35(11):2693-2701.[5]　,,.[M].:,2002.LOUJin-sheng,XIEShui-bo,HEShao-hua.Themechanismandtheapplicationofbiologicalnitrogenandphosphatere-moval[M].Changsha:ThePublishingCompanyofNationalUniversityofDefenseTechnology,2002.[6]　TurkO,MavinicDS.Preliminaryassessmentofashortcutinnitrogenremovalfromwastewater[J].CanadianJournalofCivilEgineering,1986,13(6):600-605.TheeffectsofCOD/NonnitrogenremovalbysimultaneousnitrificationanddenitrificationvianitriteFANJian-hua1,2,ZHANGChao-sheng1,FANGQian1,ZHANGKe-fang1(1.SchoolofCivilEngineering,GuangzhouUniversity,Guangzhou510006,China;2.SchoolofWaterConservancyandEnvironment,ChangchunInstituteofTechnology,Changchun130012,China)Abstract:Nitrogenisremovedfromthesyntheticwastewaterbysimultaneousnitrificationanddenitrificationvianitritebycontrollingsludgeageinthesequencingbatchreactor(SBR).TheeffectsofdifferentCOD:nitrogenratiosonnitrogenremovalbysimultaneousnitrificationanddenitrificationvianitriteareinvestigated.Theresultsoftheexperimentshowthatwhenthesludgeage,pHandDOwereoptimal,theremovalrateofCOD,NH+4-NandTNreached90%～95%,99%and90%～95%respectivelyonconditionthattheCOD:nitrogenratiois6.5.Inconclusion,theresultsofsimultaneousnitrificationanddenitrificationvianitritewouldbegoodbymak-ingtheCOD:nitrogeninsewageoptimalwhenthesludgeageisoptimalinthereactor.Keywords:thesequencingbatchreactor;sludgeage;simultaneousnitrificationanddenitrificationvianitrite【:】59