不同功能曝气生物滤池的设计要点王舜和

　Vol.34　No.11　200847　　　王舜和　郭淑琴(,　300051)　　　曝气生物滤池工艺是近年来国内外的研究热点,具有处理效果好,占用土地少,对环境影响小,造价和运行费用较低等优点,但由于其正处于探索、发展阶段,部分设计参数还没有统一的标准,在查阅国内外工程总结的基础上,阐述了滤速和负荷的作用、后置反硝化和前置反硝化工艺的特点,归纳了不同功能曝气生物滤池的设计要点。　曝气生物滤池　滤速　负荷　前置反硝化　后置反硝化1　(BAF)2080,。,BAF,。,BAF:BIOFORBIOSTYR,BIOFOR。BIOFOR:①1,;②;③;④,。,BAF。,(C)、(N)(DN)。,,。(DNN)(DNN),,。,:。2　2.1　BAF,。,BAFC、NDN,:BOD5、。《》(GB50014—2006),:3～6kgBOD5/(m3·d)、0.3～0.8kgNH3—N/(m3·d)0.8～4.0kgNO-3—N/(m3·d),,。1994[1],BAF,。CODCrCODCr,10kgCODCr/(m3·d),CODCr100mg/L,《》(GB18918—2002)B,CODCr。,CODCr60mg/L,,,18hm2。8min,0.65,2363L/s。160,2400L/s(30L/s,0.5),。&:710068100:[phone]E-mail:[e-mail]:2008-07-10DOI:10.13789/j.cnki.wwe1964.2008.11.00548　　　　Vol.34　No.11　20084～5kgCODCr/(m3·d),CODCr50mg/L,3kgCODCr/(m3·d)。,BAF,1.4kgNH3—N/(m3·d),80%。BOD5,BOD560mg/L,0.3kgNH3—N/(m3·d),BOD520～50mg/L,0.7kgNH3—N/(m3·d),BOD520mg/L,1kgNH3—N/(m3·d)。,,,4kgNO-3—N/(m3·d)。:①CODCr;②BOD5;③,。BAF,,。2.2　,,,。《》,:2～10m/h,,。,BAF,。[2]Acheres,BIOFOR144m2,4m。,,NH3—N(25mg/L),CODCr(75mg/L)。,。3:4～6m/h、6～8m/h8～10m/h,,NH3—N1kgNH3—N/(m3·d)(、),BIOFOR,80%～100%,,。SS,,SS。:,BAF,。:,、;,;,,,。(5m/h)BIOFOR,N10m/h。,CODCr,,,C,6m/h。,,14m/h。2.3　,;,,。,,,。3　、,,,。,BAF,,。,,BOD5,;BOD5,,,,,BAF。,BAF。,C+N(、);(DN+　Vol.34　No.11　200849　　　C/N)(C/N+DN)。,、。,,,。,DN,;,BOD5,C/N,,,,:①,BOD5;②,,BOD5,。BOD5,,。4　4.1　,SS,BOD5,,BOD5,。4.2　C/NBAF,,BOD5。,6m/h,10m/h,;,,2.1BOD5。,,,,。4.3　DNC/N,,DN。(1～1.5kgNO-3—N/(m3·d)),DNC/N,,DNC/N、,DN。,DN,,,,DN,;DN,。DN,CODCr,TN。,,。1mg/LNO-3—N5mg/LCODCr,?,:5C+4NO-3+4H+5CO2+2H2O+2N25C+5O25CO2CODCr/NO-3-N=5×32/(4×14)=2.86,CODCr,(38%～42%),CODCr=2.86/(1-0.38)～2.86/(1-0.42)=4.6～4.9kgCODCr/kgNO-3—N,,,,5kgCODCr/kgNO-3—N。:2CH4O+3O2=2CO2+4H2O,1kg1.5kgCODCr,3.3kg/kgNO-3—N。4.4　5m3/d,,BOD/COD0.25,,GB18918—2002B。,S3D+C/N+DN,。,SS60mg/LBAF。6,50　　　　Vol.34　No.11　2008,8m/h,10m/h。9L/(s·m2),25L/(s·m2)。BOD5,C/N,0.8kgNH3—N/(m3·d)。,,,20mg/L,6mg/LNO-3—N。5　BAF,,。,,。,DNN,,,:①,;②BOD5DN,C/N;③;④。,。5.1　,,BOD5。S3D,:,CODCrBOD5,,BAF;S3DSSBOD5,。,BAF,。,。5.2　,,;,,?Chiou[3],,BAF,TN。,,TN。,,,DNDO,TN。,,TN;,TN;,。,,,:①;②,,。Nicolavcic(2002),,100%～150%。TN,,RotherEDN—C/N—DN,,。5.3　DN,DN,。DN,Rother.E[4]BOD5/TNDN。,BOD5/NO-3—N,TN70%BOD5/NO-3—N7～8;60%BOD5/NO-3—N6。BOD5/NO-3—N5,50%。,,TN。,DO,DNBOD5,,,0.6kgNO-3—N/(m3·d)。RotherE,,。5.4　NDNCODCr,CODCr,。,DNCODCr60%,40%～50%CODCr。DNCODCr:,;,。　Vol.34　No.11　200851　　　,RotherE[7]:CODCr1.5kgCODCr/(m3·d),0.6kgNH3—N/(m3·d);CODCr,0.1kgNH3—N/(m3·d)。5.5　6m3/d,,BOD/COD0.6,,GB18918—2002B。,,+DN+C/N。3h,,1.6m/h,,DN。,4,5,DN10m/h,0.5kgNO-3—N/(m3·d),C/N8m/h,CODCr1.0kgCODCr/(m3·d),0.6kgNH3—N/(m3·d),100%～120%。,。6　(1)BAF,,。(2),,、。(3)BAF:,BOD5,C/N6～10m/h,:BOD560mg/L,0.3kgNH3—N/(m3·d),BOD520～50mg/L,0.6kgNH3—N/(m3·d),BOD520mg/L,1.0kgNH3—N/(m3·d)。DN3.3kg/kgNO-3—N。,,BOD5。(4)BAF,,TN70%。100%～150%,TN50%。0.4～0.5kgNO-3—N/(m3·d),10m/h,BOD/NO-3—N6。DNBOD560%,CODCr70%,CODCr。N(0.5kgNH3—N/(m3·d)),CODCr2kgCODCr/(m3·d)。参考文献1　PujolR,HamonM,KandelX.Biofilters:Flexible,ReliableBiologicalReactors.WatSciTech,1994,29(10-11):33～382　PujolR,LemmelH,GousaillesM.Akeypointofniteificationinanupflowbiofiltrationreactor.WatSciTech,1998,38(3):43～493　ChiouRJ,OuyangCF.Theeffectofrecycleratioonnitrogenremovalinthecombinedpre-denitrification/nitrificationbiofiltersystem.ChemTechnolBiotechnol,2001,76:559～5644　RotherE,CornelP.Potentialsandlimitsofapre-denitrification/nitrificationbiofilterconfigurationforadvancedmunicipalwastewatertreatment.WaterScienceandTechnology,2007,55(8-9):115～1235　PujolR,TaralloS.Totalnitrogenremovalintwo-stepbiofiltration.WatSciTech,2000,41(4-5):65～686　PeladanJG,LemmelH,PujolR.HighNitrificationRateWithUpflowBiofiltration.WatSciTech,1996,34(1-2):347～3537　RotherE,CornelP.Optimisingdesign,operationandenergyconsumptionofbiologicalaeratedfilters(BAF)fornitrogenremovalofmunicipalwastewater.WatSciTech,2004,50(6):131～1398　DeeA,JamesN,JonesI.etal.Pre-orpost-denitrificationatbiologicalfilterworks?Acasestudy.WatSciTech,1994,29(10-11):145～1559　GilmoreKR,HusovitzKJ,HolstT.etal.Influenceoforganicandammonialoadingonnitrifieractivityandnitrificationperformanceforatwo-stagebiologicalaeratedfiltersystem.watSciTech,1999,39(7):227～234　　&:300051239E-mail:[e-mail]:2008-03-18:2008-08-12