MBBR系统同步硝化反硝化生物脱氮特性研究张永祥

第27卷　第1期2010年2月　　　黑龙江大学自然科学学报JOURNALOFNATURALSCIENCEOFHEILONGJIANGUNIVERSITY　Vol.27No.1February,2010　　　　　　MBBR张永祥1,　姚伟涛1,　肖社明2,　田　淼1(1.,100124;2.,130021)　:为了研究同步硝化反硝化过程中的脱氮特性,采用移动床生物膜(MBBR)系统,在污水平均C/N为3.5的条件下,研究了水力停留时间(HRT)及曝气量对系统同步硝化反硝化过程中氮和有机物降解的影响,并分析了COD、NH+4-N及TN在移动床生物膜系统中的沿程变化情况。结果表明,在移动床生物膜中实现了同步硝化反硝化现象,控制HRT为14h,曝气量为100L·h-1,溶解氧在4.5mg·L-1左右时,COD、NH+4-N和TN的去除率分别达到83.53%、78.51%和62.89%;随着HRT的增加,COD、NH+4-N和TN的去除率都相应提高,且NH+4-N和TN去除率增加的幅度更大;随着曝气量的减小,COD、NH+4-N和TN的去除率相应降低,且NH+4-N和TN去除率下降得更明显;NH+4-N和TN的浓度基本上是按进水、反应器和沉淀池沿程降低,且主要去除发生在反应器内,反应器内部水质和其出水水质十分相近,表明该MBBR反应器的流态是完全混合式的。:移动床生物膜系统;同步硝化反硝化;脱氮:X703:A:1001-7011(2010)01-0105-06:2009-11-04:(40372113):(1962-),,,,,:,,E-mail:[e-mail]　　(SimultaneousNitrificationandDenitrification,SND),,。,,。[1-3],SND。,SND,,,[4-5]。,SND[6-7],SND。SND[8],HRTSND,COD、NH+4-NTN,SND。1　试验部分1.1　1,,15L,(12L)、(3L)。50cm,20cm。BioMTM,,,,。,DOI:10.13482/j.issn1001-7011.2010.01.023,、、。,、,,,,,。,,。1.2　1。1.3　,2。2,NH+4-N(NH+4-N50mg·L-1),C/N(COD/TN),3.5。2　试验结果与分析,HRT,,10,3,7。50%。2.1　HRT2.1.1　COD、NH+4-N100mg·L-1,HRT8、10、12、14h,SNDCODNH+4-N,28℃,pH6.1～7.5,DO3.5～4.8mg·L-1,2。2,CODHRT,,HRT,COD。,HRT,CODHRT,,HRT。NH+4-NHRT,,HRT,MBBRNH+4-N。NH+4-N,NH+4-N15%,NH+4-N,NH+4-N。·106·黑　龙　江　大　学　自　然　科　学　学　报　　　　　　　　第27卷　2.1.2　TN100mg·L-1,SNDTN3。HRT8h,、TN,,TN。HRT10h,、TN,,TNTN,TN。HRT12h,、TN99.63mg·L-153.71mg·L-1,TN46.24%,、TN。HRT14h,TN,、TN100.89mg·L-137.46mg·L-1,TN,58.57%～68.76%。　　,HRTTN,HRT,TN,,HRT,MBBRTN,。HRT,,NH+4-N,NH+4-N。HRT,NH+4-N,HRTMBBR,HRT,NH+4-N。HRT,NH+4-NHRT,MBBR,。MBBR,[9],,,,,。HRT,MBBR。,HRT,。,,14h。2.2　2.2.1　COD、NH+4-N0.9L·h-1,SNDCODNH+4-N,21～27℃,pH6.2～7.0,DO3.2～4.7mg·L-1,4。4,COD,,,COD。:,。,,3.0mg·L-1,。120L·h-1,COD,MBBR,·107·第1期张永祥等:MBBR系统同步硝化反硝化生物脱氮特性研究,,CODCOD,。,NH+4-N,81.47%～85.92%,,,NH+4-N。2.2.2　TN0.9L·h-1,SNDTN,5。100mg·L-1,、TN100.89mg·L-137.46mg·L-1,TN62.89%,TN,58.57%～68.76%,TN31.30～42.30mg·L-1。80mg·L-1,、TN100.76mg·L-162.86mg·L-1,TN46.66%,TN。60mg·L-1,TN,,22.12%～50.59%。120mg·L-1,、TN102.29mg·L-151.81mg·L-1,TN,,48.09%～50.58%。　　,TN,TN,TN,100L·h-1TN62.89%,。“”,,DO,,·108·黑　龙　江　大　学　自　然　科　学　学　报　　　　　　　　第27卷　,,NH+4-N,TN,。,,DO,,,,,NH+4-N,;DOCOD,,MBBR,。,,,,。,,100L·h-1。2.3　COD、NH+4-NTNHRT,、、、COD、NH+4-NTN,6。6,COD211.34mg·L-146.20mg·L-1,COD。,COD37.66mg·L-1,COD8.54mg·L-1,。NH+4-N80.32mg·L-126.26mg·L-1,。TN96.78mg·L-153.10mg·L-1,。NH+4-NTN、,,,MBBR。3　结　论(1),HRT,COD,NH+4-NTN,,HRT14h,C/N3.5,NH+4-NTN78.51%62.89%。(2),TN,,COD、NH+4-NTN,NH+4-NTN,100L·h-1,CODTN,83.53%62.89%。(3)HRT,COD、NH+4-NTN,NH+4-NTN、,,MBBR。[1]　JOOHS,HIRAIM,SHODAM.Characteristicsofammoniumremovalbyheterotrophicnitification-aerobicdenitrificationbyAlcaligenesfaecalisNo.4[J].JournalofBioscienceandBioengineering,2005,100(2):184-191.·109·第1期张永祥等:MBBR系统同步硝化反硝化生物脱氮特性研究[2]　MATSUZAKAE,NOMURAN,TOSHIAKINK,etal.Asimplescreeningprocedureforheterotrophicnitrifyingbacteriawithoxygen-tolerantdenitrificationactivity[J].JournalofBioscienceandBioengineering,2003,95(4):409-411.[3]　JOOHS,HIRAIM,SHODAM.PiggerywastewatertreatmentusingAlcaligenesfaecalisstrainNo.4withheterotrophicnitrificationandaerobicdenitrification[J].WaterResearch,2006,40(16):3029-3036.[4]　LIYZ,HEYL,OHANDJADG,etal.Simultaneousnitrification—denitrificationachievedbyaninnovativeinternal-loopairliftMBR:Compara-tivestudy[J].BioresourceTechnology,2008,99:5867-5858.[5]　HYUNGSEOKYOO,KYU-HONGAHN,HYUNG-JIBLEE,etal.Nitrogenremovalfromsyntheticwastewaterbysimultaneousnitrificationanddenitrification(SND)vianitriteinanintermittently-aeratedreactor[J].WaterResearch,1999,33(1):145-146.[6]　THIRDKA,GIBBSB,NEWLANDM,etal.Long-termaerationmanagementforimprovedN-removalviaSNDinasequencingbatchreactor[J].WaterResearch,2005,39:3523-3530.[7]　HOLMANJB,WAREHAMDG.COD,ammoniaanddissolvedoxygentimeprofilesinthesimultaneousnitrification/denitrificationprocess[J].BiochemicalEngineeringJournal,2005,22:125-133.[8]　,.[J].,1998,26(4):400-413.[9]　.[D].:,2008:41-42.Biodenitrificationcharactersstudyusingsimultaneousnitrificationanddenitrificationinmoving-bedbiofilmreactorsystemZHANGYong-xiang1,　YAOWei-tao1,　XIAOShe-ming2,　TIANMiao1(1.CollegeofCivilEngineeringandArchitecture,BeijingUniversityofTechnology,Beijing100124,China;2.ChinaNortheastMunicipalEngineeringDesignandResearchInstitute,Changchun130021,China)Abstract:Thebiodenitrificationcharactersofsimultaneousnitrificationanddenitrification(SND)werestudied.Un-dertheconditionthattheaverageC/Nratioofinfluentwas3.5,theeffectsofhydraulicretentiontime(HRT)andaerationvolumeontheperformanceofdenitrificationandorganicmatterdegradationinmoving-bedbiofilmreactor(MBBR)systemwerestudied,andthechangingsituationofchemicaloxygendemand(COD)、ammonianitrogen(NH+4-N)andtotalnitrogen(TN)alongthesystemwereanalyzed.Theexperimentresultsshowedthatthephenom-enonofsimultaneousnitrificationanddenitrificationtookplaceintheMBBR,andthedenitrificationeffectwassat-isfactory,namelywhenHRT,aerationvolumeanddissolvedoxygen(DO)were14h,100L·h-1and4.5mg·L-1,theaverageremovalratesofCOD、NH+4-NandTNwere83.53%,78.51%and62.89%,respectively.TheremovalratesofCOD,NH+4-NandTNwentupaccordinglyasHRTwasgraduallyincreased,buttheremovalratesofNH+4-NandT