城镇污水处理厂NPR工艺低温运行的效能分析籍鹏飞

2952010　10　　四　川　环　境SICHUANENVIRONMENT　　Vol.29,No.5October2010··:2009-12-29:(2008ZX07314-006)。:(1987-),,,2008,。NPR籍鹏飞1,马建立2,邓小文2,杨春风1(1.,　300132;2.,　300191)　　:介绍了天津市某城镇污水处理厂NPR工艺的特点及运行状况。通过对污水厂的运行监测数据分析,研究了该工艺在低温条件下处理城镇生活污水时的脱氮除磷效果。结果表明:NPR工艺具有一定的优异性,它能在降低能耗的前提下使系统COD和SS的去除率进一步降低,出水能达到中水回用标准,有利于污水的再生利用;低温影响NPR系统的硝化及反硝化率,低温下有机物的去除更易受到有机负荷的影响;温度对生物去除SS,COD和TP的效果影响不大,对NH3-N及TN的去除效果影响比较明显。低温下污水处理厂COD、SS、NH3-N、TN、TP的平均去除率分别为72.1%、94.9%、67.5%、55.1%、66.5%。　　:;NPR;;;:X703.1　　　　:A　　　　:1001-3644(2010)05-0133-06AnalysisofOperationEfficiencyofNitrogenandPhosphorusRemovalProcessatLowTemperatureinMunicipalSewageTreatmentPlantJIPeng-fei1,MAJian-li2,DENGXiao-wen2,YANGChun-feng1(1.SchoolofCivilEngineering,HebeiUniversityofTechnology,Tianjin300132,China;2.TianjinAcademyofEnvironmentalSciences,Tianjin300191,China)　　Abstract:ThecharacteristicsandoperationsituationoftheNitrogenandPhosphorusRemoval(NPR)processusedinamunicipalsewagetreatmentplantinTianjinareintroduced.Basedonanalysisofthemonitoringdata,theperformancesofnitrogenandphosphorusremovalinNPRprocessatlowtemperaturearestudied.TheresultsshowthatNPRprocesshasadvantagethatitfurtherdecreasesthesystemconcentrationsofCODandSSattheconditionofdecreasingtheenergyconsumption,sothattheeffluentwaterqualitycanreachthestandardofreusednormalwater.Lowtemperatureaffectstheratesofnitrificationanddenitrification.Atlowtemperaturetheremovaloforganicmattersisaffectedbyorganicloadingratemoreseriously.ThereisinsignificanteffectoftemperatureonremovalofSS,CODandTP,whiletheeffectsonthatofNH3-NandTNaresignificant.AtlowtemperaturetheaverageremovingratesofCOD,SS,NH3-N,TNandTPare72.1%,94.9%,67.5%,55.1%and66.5%respectively.Keywords:Municipaldomesticsewage;NPRprocess;denitrogenanddephosphorus;lowtemperature;operationperformance　　,、。“”,。,、、、,。,,,,[1],DOI:10.14034/j.cnki.schj.2010.05.016[2]。,C/N。NPR。,、,NPR,。、、、、,、、,。NPR。1　工艺流程与分析方法1.1　NPR1。1　NPRFig.1　FlowchartofNPRprocess　　NPR(NitrogenandPhosphorusRemoval)A2/OBAF(BiologicalAeratedFilter)。:A/A/OA2/O(、、),;BAF,,,,,[3]。SSA/A/OBAF,A/A/O,BAF,A/A/O。1.0m3,2.0m3。《》(GB18918-2002)A。1.2　A/A/O,V1=681.5m3,t1=1.6h,B×L=14.5m×10.0m,H=4.7m;V2=1457m3,t2=3.5h,B×L=31.0m×10.0m,H=4.7m;V3=4725m3,t3=11.34h,B×L=9.3m×10.0m,H=5.0m,SRT=15～18d,MLSS=3000～4500mg/L,F/M=0.15～0.35kg·BOD/kgMLSS·d,pH=7.0～8.5,60%～150%;BAF,L×B=9.7×3.2m,4∶1,v=7.04m/h,200%～400%。DO:0.2mg/L,0.2～0.5mg/L,2mg/L。1.3　　　1,COD2。1,TN、TP,BOD5、CODCr,;2,COD,COD12%;COD6%,COD1　()Tab.1　Analysisofinfluentquality(average)1h1hBOD5(mg/L)9063NO3-N(mg/L)2.62.6CODCr(mg/L)210137NH3-N(mg/L)3132SS(mg/L)17381(mg/L)1815.3(mg/L)348329TKN(mg/L)4948.3Cl-(mg/L)235235TN(mg/L)51.650.9pH8.018.01TP(mg/L)5.43.9134　　　　　　　　　　　　　　　　　　四川环境292　COD()Tab.2　AnalysisofinfluentCODcomposition(average)CODCOD0.200.30COD0.680.56COD0.060.09COD0.060.0594%,SS,90%。COD0.2,COD/TP8;,COD0.3,COD/TP12,,COD/TKN5。1.4　3[4]。3　Tab.3　AnalysisitemsandmethodspHPHS-3SSDONH3-NBOD5NO3-NCODCrTKNSV1000mL30minTN-MLSSTP-2　结果与分析2009121～20101204。4　、Tab.4　Qualitiesofinfluentandeffluentaswellasoperationperformanceatlowtemperature(mg/L)(mg/L)(%)()(mg/L)BOD588.0～142.02.0～19.662.5～95.0(83.4)10COD112.4～324.016.0～78.950.6～92.5(72.1)50SS86.0～325.02.0～9.187.9～98.5(94.9)105.36～67.400.37～45.332.3～98.1(67.5)510.67～78.201.91～50.6521.4～93.0(55.1)151.52～7.00.15～3.2046.1～96.6(66.5)0.52.1　　　NPRCOD2,COD3。2,COD50mg/L,,COD(72.1%)、。、COD[5];3,,COD。11℃,COD80%,11℃～15℃COD,15℃COD90%,。　　NPRCOD4。4,COD,80%,,C/N,。,,1355　　　　　　:NPR4　NPRCODFig.4　VariationofCODconcentrationinNPRsystemPHB;,COD,[6]。COD118.4mg/L;COD76.22mg/L,,COD;COD58.15mg/L,BAFCOD36.20mg/L,BAFCOD,,。COD,COD50mg/L,COD。2.2　SSNPRSS5。5,SS,10mg/L,SS(94.9%),。:SSA/A/O,87.9%,A/A/O30mg/L;BAFSS,BAFSS,BAF12d;BAF,TN[7]。5　NPRSSFig.5　PerformanceofSSremovalinNPRsystem2.3　NPR、6、7。6,TN10.67～78.20mg/L,TN1.91～50.65mg/L,55.1%,1215mg/L,;1,30mg/L,。7,5.36～67.40mg/L,0.37～45.3mg/L,67.5%,125mg/L,;1,20mg/L,。,,:(1)1,,。,,,,,;(2)DO,TN;(3)200%;(4),COD,,BAFTN[8]。　　NPR8。8,NH3-NTN,3℃20%,8℃～14℃,15℃;,,8℃,TN,8℃～14℃,15℃,。6　NPRFig.6　PerformanceofTNremovalinNPRsystem136　　　　　　　　　　　　　　　　　　四川环境292.4　NPR9。9,120.5mg/L,;11.5mg/L,(66.5%)。:1.5mg/L,,。NO-3-N1.5～5mg/L,NO-2-N1.5mg/L,NO-3-N7mg/L,NO-3-N,,;。,(PAOs)。9　NPRFig.9　PerformanceofTPremovalinNPRsystem　　NPR10。10,,。10℃,TP85%,10℃～15℃TP,15℃TP。Henze,,,5℃15℃40%[9,10]。10　NPRFig.10　TPremovingratechangingwithtemperatureinNPRsystem2.5　、、、,()60%～90%,。(、、),,,;(、、),。,1m30.14～0.28kWh,,1m30.19～0.36kWh[11]。,,、、、、,。3　结　论3.1　:NPRCOD、SSTP,NH3-NTN,NPR。3℃20%,10℃50%;10℃COD80%TP85%。1375　　　　　　:NPR10℃,。3.2　NPR:CODSS,,,NPR。3.3　:,COD,;BAFDO;200%,,,。(PAOs),,。,BAF、BAF、,,DO,。3.4　,,、、,,,,。:[1]　,　,,.[J].,2009,25(13):16-23.[2]　　,,　,.[J].,2008,33(5):84-86.[3]　,,,.(NPR)[J].,2008,34(2):47-52.[4]　《》.()[M].:,2006.210-240.[5]　,,　,.[J].,2003,19(9):5-7.[6]　,,.NPR[J].,2007,20(4):125-129.[7]　　,　,,.[J].,2005,27(3):11-14.[8]　　,,,.[J].,2008,29(6):1518-1525.[9]　HenzeM,HarrenmoesP,JansenJLC,etal.Wastewatertreat-mentbiologicalandchemicalprocesses.2nded[M].NewYork:Springer,1997.109,114.[10]　ChuangSH,OuyanCF,WangYB.Kineticcompetitionbetweenphosphatereleaseanddenitrificationonsludgeunderanoxiccon-dition