低碳源条件下改良双污泥系统脱氮除磷优化研究

37420164ENVIＲONMENTALSCIENCEVol．37No．4Apr．2016*1．4100822．410082--．0.5L·min－1--SBＲ．COD、、SOP200、35、10mg·L－1TN94.8%60.9%TP96.5%75%SOP0.35mg·L－1NH+4-N0.50mg·L－1TN1.82mg·L－1《》GB18918-2002A．COD、0.17g·g－10.048g·g－1．X703.1A0250-3301201604-1492-07DOI10．13227/j．hjkx．2016．04．0392015-10-172015-11-155127817551378188514781702012DFB30030-031989～[e-mail]*[e-mail]NitrogenandPhosphorusＲemovalofModifiedTwo-sludgeSystemUndertheConditionofLowCarbonSourceYANGWei-qiangWANGDong-boLIXiao-ming*YANGQiXUQiu-xiangZHANGZhi-beiLIZhi-junXIANGHai-hongWANGYa-liSUNJian1．CollegeofEnvironmentalScienceandEngineeringHunanUniversityChangsha410082China2．KeyLaboratoryofEnvironmentalBiologyandPollutionControlHunanUniversityMinistryofEducationChangsha410082ChinaAbstractThispaperexploredthemethodofresolvinginsufficientcarbonsourceinurbansewagebycomparingandanalyzingdenitrificationandphosphorusremovalNPＲeffectbetweenmodifiedtwo-sludgesystemandtraditionalanaerobic-aerobic-anoxicprocessundertheconditionoflowcarbonsourcewastewater．Themodifiedtwo-sludgesystemwastheexperimentalreactorwhichwasoptimizedbyaddingtwostagesofmicro-aerationaerationrate0.5L·min－1intheanoxicperiodoftheoriginaltwo-sludgesystemandmulti-stageanaerobic-aerobic-anoxicSBＲwasthecontrolreactor．WhentheinfluentCODammonianitrogenSOPconcentrationwererespectively2003510mg·L－1theNPＲeffectoftheexperimentalreactorwasbetterthanthatofthecontrolreactorwiththeremovalefficiencyofTNbeing94.8%vs60.9%andTPremovalbeing96.5%vs75%respectively．TheeffluentSOPammoniaTNconcentrationoftheexperimentalreactorwere0.350.501.82mg·L－1respectivelywhichcouldfullymeetthefirstclassofAstandardofthePollutantsEmissionStandardofUrbanWastewaterTreatmentFirmGB18918-2002．UsingtheoptimizedtreatmentprocessthelargestamountsofnitrogenandphosphorusremovalperunitcarbonsourceasCODwere0.17g·g－1and0.048g·g－1respectivelywhichcouldfurthestsolvethelowercarbonconcentrationincurrentmunicipalwastewater．Keywordslowcarbonsourcemodifiedtwo-sludgesystemmicro-aerationnitrogenandphosphorusremovalNPＲdenitrifyingphosphate-accumulatingorganismsDPAOs．--UCT、MUCT、VIPJHB1．．2～56．、78．9～14．．4．Kuba151996A2NSBＲ2316～18．50%COD．．--SBＲ．11.11．SBＲSBＲ1．4L、3L．．．3．．10.50L·min－1SBＲ1.5L·min－11.5L·min－1．250r·min－1SＲT15dpH．ab1Fig．1Schematicdiagramsofexprerimentalandcontrolreactors1.23000mg·L－1．1．SOP．19．1Table1InfluentqualityCOD/mg·L－1SOP/mg·L－1NH+4-N/mg·L－1CaCl2/mg·L－1MgSO4/mg·L－1/mg·L－120010355100.51.3SOPNH+4-NNO－2-NN-1--NO－3-NTN-MLSS、MLVSSTPSOP20．PHA19Glycogen-21．22.1130d2．TN、TP2．3941372Fig．2Phosphorusandnitrogenconcentrationsinexperimentalandcontrolreactorsduringlong-termoperation．SOP2.50mg·L－175%TN13.70mg·L－160.9%．SOP0.35mg·L－196.5%TN1.82mg·L－194.8%．A2NSBＲ《》GB18918-2002A．2.2SOP、NH+4-N、NO－2-N、NO－3-N、PHASOP、NH+4-N、NO－2-N、NO－3-N、PHAβPHB、βPHVPH2MV34．2.2.1SOPSOP3．90min．COD100%SBＲ2N、PTable2EffluentNPremovalinexperimentalandcontrolreactors/mg·L－1/mg·L－1/%COD/g·g－1/mg·L－1/%COD/g·g－1COD20001000100TN351.8294.80.1713.7060.90.11TP100.3596.50.0482.50750.038．SBＲ22．SOP0.35mg·L－1．3a49.40mg·L－1．SOPPHA71.8%．SOP62.00mg·L－1．3cSOP37.70mg·L－1VSS15.70mg·g·h－1．3.60mg·g·h－11.60mg·g·h－1．2.2.2NH+4-N、NO－2-N、NO－3-N323～25．AOBNOB．120minNO－2-N0.23mg·L－1、NO－3-N21.90mg·L－1．SBＲ．90minNO－3-N17.40494143N、PFig．3VariationsofNandPinatypicalcycleofexperimentalandcontrolreactorsmg·L－10.90mg·L－1NO－2-N0VSS6.33mg·g·h－1．NO－2-NN2．NH+4-N0.65mg·L－1．20minNH+4-N3.04mg·L－1NO－3-N3.20mg·L－1NO－3-NNH+4-N．30minNO－3-N1.66mg·g·h－1．NO－2-N．3.20mg·L－1NO－3-N．Kim26．60min5.00mg·g·h－1．60min20minNO－3-N．2.2.3PHASBＲPHA4a．PHAPHBPHVPH2MV．PHAPHBPHVPH2MV27．→→→-+CO→2→→→→→A→AA+CO2ATCAAPHV28．PH2MVAAPH2MV．PHA29．PHAC1.90mmol·L－19.80mmol·L－1C4.50mmol·L－12.50mmol·L－1．PHA、30．ATPATP、、2431．PHA230min5941375mmol·L－1．PHA32/HAc0.44200mg·L－1COD2.70mmol·L－12.00mmol·L－1HAc．PHA4bPHA．4PHA、Fig．4VariationsofPHAandglycogeninatypicalcycleofexperimentalandcontrolreactors2.3．．．．O2250.50L·min－1AOB．、PHA．2、0.17g·g－10.048g·g－1SBＲ0.11g·g－10.038g·g－1．16COD200mg·L－1、51.50mg·L－1、4.20mg·L－1、33.18mg·L－1、9.65mg·L－1TN．33TNGB18918-2002ASOPB．．．SBＲTN13.7mg·L－1．34．“”．．31SBＲ0.5L·min－1．2SOP0.35mg·L－1NH+4-N0.50mg·L－1TN1.82mg·L－1《》GB18918-2002A．SOP2.50mg·L－1TN13.70mg·L－1．369414．1．D．2013．13-16．2．SBＲJ．20082961526-1532．3WangYYPengYZLiTWetal．Phosphorusremovalunderanoxicconditionsinacontinuous-flowA2Ntwo-sludgeprocessJ．WaterScienceandTechnology200450637-44．4WuCYChenZQLiuXHetal．Nitrification-denitrificationvianitriteinSBＲusingreal-timecontrolstrategywhentreatingdomesticwastewaterJ．BiochemicalEngineeringJournal200736287-92．5ZengWWangXDLiBXetal．NitritationanddenitrifyingphosphorusremovalvianitritepathwayfromdomesticwastewaterinacontinuousMUCTprocessJ．BioresourceTechnology2013143187-195．6．COD/NJ．201536103778-3785．7NybergUAnderssonBAspegrenH．Long-termexperienceswithexternalcarbonsourcesfornitrogenremovalJ．WaterScienceandTechnology19963312109-116．8Zubrowska-SudolMWalczakJ．EnhancingcombinedbiologicalnitrogenandphosphorusremovalfromwastewaterbyapplyingmechanicallydisintegratedexcesssludgeJ．WaterＲesearch20157610-18．9LemosPCSerafimLSＲei