mCmN对SBR短程硝化系统影响研究杨辉

科研开发,2011,19(2):1～5SCIENCE&TECHNOLOGYINCHEMICALINDUSTRY:2010-12-12:　(1973-),,,,。＊(05-K2-9)。m(C)∶m(N)SBR＊杨　辉1,2,崔慧慧1(1.,110168;2.,100004)　:m(C)∶m(N)是影响短程硝化系统的主要因素之一,为了寻求合适的m(C)∶m(N),在稳定运行的SBR系统中,以模拟生活污水为处理对象,进行动态实验,通过改变系统内的m(C)∶m(N),考察了在不同m(C)∶m(N)下,短程硝化系统的反应效果与稳定运行情况。实验证明,在稳定运行时,不同m(C)∶m(N)条件下对氨氮的去除率影响不大,在2m(C)∶m(N)8时,均可以保证系统较高的氨氮去除率。m(C)∶m(N)=6∶1时,亚硝氮积累率高达97.80%,总氮损失最大,可高达42.51%。系统长时间在高m(C)∶m(N)条件下运行,会破坏系统的稳定性,也会影响反应器中污泥的性状及其沉降性。:碳氮比;短程硝化;SBR法:X703　　:A　　:1008-0511(2011)02-0001-05　　-NO-2-N,NO-2-N。,-25%,40%,300%[1]。、、pH、、,m(C)∶m(N)。[2,3]。m(C)∶m(N),[4]。m(C)∶m(N),,。,m(C)∶m(N)。1　1.1　SBR,15cm,50cm,10L,9.5L。,,,4,,。SBR405min,(5min)、(330min)、(60min)、(10min)4。1.2　。(28±1℃,0.5～0.7mg/L,pH=8.0～8.5),ρ()=100～120mg/L,,[m(C)∶m(N)=2∶1,4∶1,6∶1,8∶1],。,1。1　CODcr/(mg·L-1)200～960NH+4-N/(mg·L-1)100～120TP/(mg·L-1)1pH8.0～8.5/(mg·L-1)330～610(CaCO3)1.3　CODcr;NH+4-N;NO-3-N;NO-2-NN-(1-)-;DOI:10.16664/j.cnki.issn1008-0511.2011.02.022MLSS;pHpH;DODO。2　2.1　m(C)∶m(N)m(C)∶m(N)1。1　m(C)∶m(N)1m(C)∶m(N),ρ()。m(C)∶m(N)=2,300min,ρ()5mg/L;m(C)∶m(N)=4,240min,ρ()5mg/L;m(C)∶m(N)=6m(C)∶m(N)=8,180min,ρ()5mg/L。m(C)∶m(N)。m(C)∶m(N),。m(C)∶m(N)2。2　m(C)∶m(N)2m(C)∶m(N),ρ()pH。60min,m(C)∶m(N)=2,0.32mg/L·min;m(C)∶m(N)=40.51mg/L·min;m(C)∶m(N)=60.82mg/L·min,m(C)∶m(N)=8,0.84mg/L·min,m(C)∶m(N),。240min,m(C)∶m(N)=8,1ρ(),ρ(),,,,。m(C)∶m(N)3。3　m(C)∶m(N)3m(C)∶m(N),。m(C)∶m(N),,,100%。,m(C)∶m(N),,,m(C)∶m(N),m(C)∶m(N),。m(C)∶m(N),m(C)∶m(N)0.25,,[5],[6]。m(C)∶m(N),,,。,[7],[8],·2·　　　　　　　　　　　　　　　　　　　　　　　　　19[9],,,,,[10],。m(C)∶m(N),m(C)∶m(N)8,m(C)∶m(N)。2.2　m(C)∶m(N)m(C)∶m(N)4。4　m(C)∶m(N)4m(C)∶m(N)=2,,,,94.95%。m(C)∶m(N)=4,120min99.16%,,,,95%。m(C)∶m(N)=6,,240min,99.82%,,,,,,,,97.80%。m(C)∶m(N)=8,,,120min,,,,94.60%。,。m(C)∶m(N)=6,。2.3　m(C)∶m(N),,,,。m(C)∶m(N)5。5　m(C)∶m(N)5。m(C)∶m(N)=6,,42.51%。m(C)∶m(N)=8,27.41%;m(C)∶m(N)=4,14.19%;m(C)∶m(N)=2,,3.48%。m(C)∶m(N),,。,。,。m(C)∶m(N),,,,。2.4　m(C)∶m(N)m(C)∶m(N)=8。28±1℃,0.5～0.7mg/L,ρ()=100～120mg/L,pH=8.0～8.5,14d,,,m(C)∶m(N)14d,6。6,。·3·2　,.m(C)∶m(N)SBR　　　m(C)∶m(N),,。m(C)∶m(N),,,。,,,DO,,。,。6　m(C)∶m(N)m(C)∶m(N)S-3400N,20007。7　C/N7m(C)∶m(N)=2,,m(C)∶m(N)=8,。CO2,m(C)∶m(N),CO2,,CO2,,,。3　　(1)m(C)∶m(N),,2m(C)∶m(N)8,。(2)m(C)∶m(N),m(C)∶m(N)=6,97.80%。(3)m(C)∶m(N),。m(C)∶m(N)=6,42.51%。(4)m(C)∶m(N),,。[　　　][1]　PolliceA,TandoiV,LestingiC.Influenceofaerationandsludgeretentiontimeonammoniumoxidationtonitriteandnitrate[J].WaterResearch,2002,36(10):2541～2546.[2]　,.[J].,2006,11(11):35～38.[3]　,,.C/N[J].,2008,36(2):188～192.[4]　,,,.SBR[J].,2008,37(5):337～340.[5]　OkabeS,OozawaY,HirataK,etal.RelationshipbetweenpopulationdynamicsofnitrifiersinbiofilmsandreactorsperformanceatvariousC∶Nratios[J].WaterResearch,1996,30:1563～1572.[6]　OslisoA,LewandowskiZ.Inhibitionofnitrificationinpackedbedreactorsbyselectedorganiccompounds[J].Wa-terresearch,1985,19:4230～4236.[7]　DaumM,ZimmerW,PapenH,etal.Physiologicalandmo-lecularbiologicalcharacterizationofammoniaoxidationoftheheterotrophicnitrifier[J].Pesudomonasputida,CurrMi-crobiol,1998,37(4):281～288.[8]　MoirJW,CrossmanLC,SpiroS,etal.Thepurificationof·4·　　　　　　　　　　　　　　　　　　　　　　　　　19ammoniamonooxygenasefromparacoccusdenitrificans[J].FEBSLett,1996,387:71～74.[9]　AndersonIC,PothM,HomsteadJ,etal.AcomparisonofNOandNO2productionbytheautotrophicnitrifierNitor-somonaseuropaeaandthehetrotrophicnitrifierAlcaligenesfaecalis[J].ApplEnvironMicrobiol,1993,59(11):3525～3533.[10]RobertsonAL.SimultaneusnitrificationanddenitrificationinaerobicchemostatculturesofThilsphaerapantotropha[J].ApplEnvironMicrobiol,1998,54(11):2812～2818.Studyonthetheeffectofcarbon/nitrogenradioontheshort-cutnitrificationinasequencingbatchreactor(SBR)YANGHui1,2,CUIHui-hui1(1.SchoolofMunicipalandEnvironmentalEngineering,ShenyangJianzhuUniversity,Sheny-ang110168,China;2.SchoolofResourcesandCivilEngineering,NortheastUniversity,Shenyang100004,China)Abstract:Carbon/nitrogenratioisoneoftheprimaryinfluencingfactorsinthesystemofshor-tcutni-trification.Inordertoselectasuitablem(C)∶m(N),inthestableoperationofSBR,withthesimula-tedwastewaterastreatmentobject,theresponseeffectandthestableoperationofshort-cutnitrifica-tionwereinvestigatedbychangingthem(C)∶m(N).Theresultsindicatedthatinastablesystem,theeffectofdifferentm(C)∶m(N)isnotobviousontheammonianitrogenremoval.Thesystemcangetagoodammonianitrogenremovalundertheconditionofm(C)∶m(N)8.Theaccumulationofnitritenitrogenreached97.80%andthewastageofTNreached42.51%.Thestabilityofthesystemwillbebrokenwhenitoperatesunderthehighm(C)∶m(N)foralongtime,anditwillalsoeffectthesludgecharacterandthesedimentationofthesystem.Keywords:Carbon/nitrogenradio;Short-cutnitrification;SBRProcess　,1974,,,,、、,。,60t,,,、、,,“”。()·5·2　,.m(C)∶m(N)SBR