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:1999-09-01:(1945—),,,。··NBIAS罗固源 许晓毅(,400045) : (NBIAS),(SRT)。,:20℃～30℃,0.25～0.45kgCODcr/kgMLSS·d,SRT18～22d,HRT8～10h,,NBIASCODcr,80%。 : NBIAS; ; (SRT) :X703 :A :1001-2141(2000)02-0011-03EffectofSRTinNBIASonNitrogenandPhosphorusRemovalLuoGuyuan,XuXiaoyi(FacultyofUrbanConstructionofChongqingJianzhuUniversity,Chongqing400045)Abstract:ThisarticlediscussedtheeffectofSRTinNBIASontheremovalofnitrogen,phosphorusandorganicmatter.RawsewageflowtestandstaticimitatedtestofsyntheticwastewaterhavebeenstudiedundervariousSRT(6,10,20,30days).Theresultsshowedthat:SRTinNBIAShasanobviouseffectontheCODcr,nitrogen,particularlyphosphorusremoval.Withtheoperationconditionswhichwatertemperatureis20℃～30℃,sludgeloadingis0.25～0.45kgCODcr/kgMLSS·d,SRTis18～22days,HRTis8～10hours,usingtherawwastewaterascarbonsource,theremovalrateofTNandTPisover80%,aswellasCODcrcanberemovedefficientlyinNBIAS.Keywords:NBIAS,Nitrogenandphosphorusremoval,SRT. NBIAS(PackageIntermittentAerationSystem——PIAS)[1]。 、,。。1 1.1 :。1。NBIAS,25L(L×B×H=371×223×300ml)、、,、,、。2,,5L,SRT,、。,,。,,、。DO2～3mg/l,。1. 2. 3. 4.NBIAS5. 6. 7. 8.1 1.2 1,《》()。22 2 200042 2 2.1 NBIAS,、、、、,,。ηTP60%,20%,。2.2 ,T=6h1 (℃)SS(mg/l)BOD5(mg/l)CODcr(mg/l)NH3-N(mg/l)TN(mg/l)TP(mg/l)pH20～3050～18090～140150～31019～4730～502.0～4.56.5～7.520～30—200～300340～41029～3538～565.0～8.06.5～7.5*,,。(∶=3h∶3h=1),Q=2.5L/h,,0.20～0.35kgCODcr/kgMLSS·d,HRT6～8h,3.217～4.140g/L。,,NBIAS。2.3 45LSRT,SRT6d、10d、20d、30dCODcr。。、6h,,MLSS5g/L。SRT,MLSS,0.23～0.68kgCODcr/kgMLSS·d。SRTSS。3 3.1 、23。 :ηTN、ηCODcr,,ηTP,ηTP31%。4。,SRT,、,SRT。2 CODcr、TN、TP(d)(℃)CODcrTNTPPO3-4(mg/l)(mg/l)(mg/l)ηCODcr(%)(mg/l)(mg/l)ηTN(%)(mg/l)(mg/l)ηTP(%)(mg/l)121.5287.6040.6485.939.3010.1474.24.050.6584.03.356.980.34221.0266.7030.9488.437.088.7976.33.690.6482.63.096.470.32321.5297.1632.6989.432.446.6879.44.710.9480.03.126.260.59422.0245.9324.5990.040.679.1177.63.090.8772.02.495.780.64520.5282.4923.4591.738.168.0578.94.231.7758.13.775.201.41:。12 223 CODcr、TN、TP4 3.2 SRT35。3 SRTCODcr、、SRT(d)ηCODcr(%)ηTN(%)ηTP(%)SVISS(mg/l)674.270.196.916931.51088.879.492.110821.22093.282.488.08117.93092.983.176.011418.25 CODcr、TN、TP SRT10d,ηTN、ηCODcr90%,SRT;SRT20d,ηTP88%。SRT6d,,MLSS,,,SRT18～22d,NBIASCODcr、、(5)。3,ηCODcr=-143.341SRT+99.81 (r=-0.9671)6 SVISSηTN=-97.471SRT+87.28 (r=-0.9755)ηTP=103.84e-0.0105·SRT(r=-0.9653)3.3 SRT36。SRT8d,SVISS,SRT,,[2]。SRT10～30d,NBIASSS20mg/l,SVI70～110,,。4 4.1 SRTNBIASCODcr、。,0.3～0.4kgCODcr/kgMLSS·d,HRT8～10h,20～30℃,SRT18～22d,NBIASCODcr、、。4.2 SRT,,,。,,、。4.3 SRTNBIASSVISS,SRT15d～30d,SVI70～110,SS。4.4 ,SRTNBIAS,NBIAS,。5 1 ..,1995,4:9～132 ..,1989132 :NBIAS