MBBR工艺强化污水脱氮除磷中试

MBBR孙逊1,谢新各2,焦文海1,毕学军2,宋美芹3(1.济南市市政工程设计研究院有限责任公司,山东济南250002;2.青岛理工大学环境与市政工程学院,山东青岛266033;3.青岛思普润水处理有限公司,山东青岛266555):针对山东济宁市污水处理厂存在的脱氮除磷效率低与运行稳定性差等问题,采用MBBR工艺进行了强化脱氮除磷的现场试验,探讨了不同水力停留时间不同填料填充比外源性碳源对系统脱氮能力的影响结果表明:在常温(21~29)系统HRT为8.4h污泥回流比为100%好氧混合液回流比为300%好氧区前三段悬浮填料填充比为50%的条件下,试验系统对COD氨氮总氮总磷的平均去除率分别达到80.58%92.4%46.3%和65.5%,处理能力优于同期污水处理厂生产系统;!在上述工艺运行条件下,投加外源性碳源(甲醇)33mg/L,试验系统的总氮去除率由46.3%提高到72.3%,出水总氮10mg/L,同时出水COD有所降低研究结果显示,MBBR工艺不仅可以显著提高系统硝化能力,而且大大提高了系统的抗冲击负荷能力,为污水处理厂下一步的改造提供了重要参考:污水处理;悬浮填料;脱氮除磷;移动床生物膜反应器:X703:C:1000-4602(2010)21-0152-05:(2009ZX07210-008-003);(2009GG10006014);(09-1-3-1-jch)PilotscaleStudyonEnhancingNitrogenandPhosphorusRemovalwithMBBRSUNXun1,XIEXinge2,JIAOWenhai1,BIXuejun2,SONGMeiqin3(1.JinanMunicipalEngineeringDesignandResearchInstituteCo.Ltd.,Jinan250002,China;2.SchoolofEnvironmentalandMunicipalEngineering,QingdaoTechnologicalUniversity,Qingdao266033,China;3.QingdaoSpringWaterTreatmentCo.Ltd.,Qingdao266555,China)Abstract:InordertosolvetheproblemoflowefficiencyinnitrogenandphosphorusremovalandpooroperationstabilityofJiningWWTP,afieldpilotscaletestforenhancingnitrogenandphosphorusremovalwithMBBRwascarriedouttoinvestigatetheeffectsofHRTs,ratiosofsuspendedcarriers,externalcarbonsourceonthenitrogenremovalcapacity.Theresultsshowthatundertheconditionsofroomtemperature(21to29),8.4hHRT,100%sludgereturnratio,300%aerobicmixedliquidreturnratio,50%ratioofthecarriers,theaverageremovalratesofCOD,NH+4-N,TNandTPare80.58%,92.4%,46.3%and65.5%.Thetreatmentcapacityisbetterthanthatoftheoriginalsystem.Undertheabovementionedconditions,whenexternalcarbonsource(methanol)of33mg/Lisadded,theremovalrateofTNisincreasedfrom46.3%to72.3%,theeffluentTNislessthan10mg/L,andtheeffluentCODisdecreasedtosomeexten.tTheMBBRprocesscanimprovethenitrificationcapacityandtheresistancetoshockloading,whichprovidesreferenceforreconstructionofWWTP.∀152∀第26卷第21期2010年11月中国给水排水CHINAWATER&WASTEWATERVo.l26No.21Nov.2010Keywords:wastewatertreatmen;tsuspendedcarriers;nitrogenandphosphorusremova;lmovingbedbiofilmreactor(MBBR),4km,20.7hm2,20#104m3/d,/(AB),2007AB,BA2/O,:50%,,;!CODCOD,;∃,,;%,,,,,&∋(DB37/599(2006),MBBR(((,,,,,[1],,,,,MBBR,[2~5]1试验材料与方法11,,,11Tab.1InfluentqualityduringexperimentCOD/(mg∀L-1)BOD5/(mg∀L-1)NH3-N/(mg∀L-1)TN/(mg∀L-1)TP/(mg∀L-1)SS/(mg∀L-1)pH109~117150~30013.4~64.812.9~74.52~18.86~10606~9121,8.4m3,))1)1)2A1Fig.1Flowchartofwastewatertreatmentprocess13SPR-122SPR-1Fig.2Suspendedcarrier∀153∀孙逊,等:MBBR工艺强化污水脱氮除磷中试第26卷第21期SPR-1,,25mm,10mm,,,(0.96g/cm3),500m2/m3,;[5~7]14&∋(4)2试验结果与讨论4(20103(7),3,1(416(515)MBBRHRT;(516(615)MBBRHRT,(67%50%),MBBR;(616(715)(),(),232Tab.2Processcontrolparametersatdifferentstages/HRT/hSRT/dDO/(mg∀L-1)MLSS/(g∀L-1)MLVSS/MLSS/(g∀L-1)/(gCOD∀m-3∀d-1)21~2510.40303~46.420.5280.65421~2510.40203~43.210.7012.310.65421~2710.40303~46.560.5240.61821~278.40203~43.230.5982.780.82622~2912.08302~35.450.5450.71522~298.40203~43.300.6232.800.826:A2/O3Tab.3TreatmenteffectofdifferentsystemsCODNH+4-NTNNO-3-NTP/(mg∀L-1)/(mg∀L-1)/%/(mg∀L-1)/(mg∀L-1)/%/(mg∀L-1)/(mg∀L-1)/%/(mg∀L-1)/(mg∀L-1)/(mg∀L-1)/(mg∀L-1)/%3578875.332.004.9384.644.9219.1251.10.1217.416.211.9269.03576980.632.003.6188.844.9224.1246.30.1226.106.212.2165.52897574.034.102.6192.440.9026.3036.50.1213.405.002.4052.02896975.934.101.9094.440.9031.6224.30.1217.505.002.3054.02857075.430.944.0087.135.4616.4153.70.1215.605.222.4253.62855681.130.943.6488.235.469.5072.30.124.755.222.0161.52121~25,HRT(10.4h),SRT20d,SRT30d12367%,COD80%,COD5.26%;5mg/L,4.2%;65.5%,(69%)COD,,,MBBR,,,(26.10mg/L),;∀154∀第26卷第21期中国给水排水(10.4h),,12367%50%,HRT0.654kgCOD/(m3∀d)0.826kgCOD/(m3∀d),0.618kgCOD/(m3∀d)COD,26%,,COD2%;,0.074kgNH+4-N/(m3∀d)0.098kgNH+4-N/(m3∀d),94.40%,1.90mg/L,MBBR2%,35%,5%,,2%,,,,,,,,MBBR23HRT(8.4h)(12350%),HRT12.08h(),,(((,33mg/L(COD50mg/L),COD,COD55.60mg/L,6%;,5mg/L,,(4.75mg/L),9.50mg/L,24.3%73.21%,15.6mg/L,53.72%,5.22mg/L,2.01mg/L,54.0%61.5%,53.6%,,;,,,24MBBR,,,DO3~4mg/L,,,∀155∀孙逊,等:MBBR工艺强化污水脱氮除磷中试第26卷第21期150min,0~30min,2gNH+4-N/(m3∀h),3gNH+4-N/(m3∀h),14%;30~150min,0.8gNH+4-N/(m3∀h);10%,MBBR,MBBR,,,3结论[0.654kgCOD/(m3∀d)],(67%)COD80.6%88.8%46.3%65.5%,COD(A2/O),MBBR,MBBR,,MBBR∃33mg/L(COD50mg/L),COD(55.60mg/L);,(4.759.50mg/L),24.3%73.21%;54.0%61.5%,;,,,,%,MBBR,MBBR,,,,MBBR:[1],.[J].,2000,19(4):183-186.[2]RustenB,HellstrmBG,HellstrmF,etal.PilottestingandpreliminarydesignofmovingbedbiofilmreactorsfornitrogenremovalattheFREVARwastewatertreatmentplant[J].WaterSciTechno,l2000,41(4-5):13-20.[3]AndreottolaG,FoladoriP,RagazziM.Upgradingofasmallwastewatertreatmentplantinacoldclimateregionusingamovingbedbiofilmreactor(MBBR)system[J].WaterSciTechno,l2000,41(1):177-185.[4]JahrenSigrunJ,degaardHallvard.Treatmentofthermomechanicalpulping(TMP)whitewaterinthermophilic(55)anaerobicaerobicmovingbedbiofilmreactors[J].WaterSciTechno,l1999,40(8):81-89.[5]JohnsonCH,PageMW,BlahaL.Fullscalemovingbedbiofilmreactorresultfromrefineryandsl