Eco-EnvironmentalKnowledgeWebEnvironmentalScience40120191Vol.40No.1Jan.2019AOA-SBRC/N*266071//A/O/ASBREBPRSPNDC/N≤4C/N.1.0L·min-10.6L·min-1180minPO3-4-P0.06mg·L-10NH+4-N、NO-2-NNO-3-N0.18、18.790.08mg·L-10、16.460.05mg·L-1TN72.69%77.97%SPNDSND19.18%31.20%180min420minPO3-4-P、NH+4-NNO-3-N0、00.03mg·L-1NO-2-N3.06mg·L-1SND32.21%TNTN99.42%.SPNDEBPRPAOsX703A0250-3301201901-0360-09DOI10.13227/j.hjkx.2018070562018-07-072018-07-165177830451708311ZR2017BEE0022017M6122091995~E-mailG_gongxiuzhen@163.com*E-mailelainewangxx@163.comDenitrificationandPhosphorusRemovalfromLowC/NUrbanSewageBasedonaPost-PartialDenitrificationAOA-SBRProcessGONGXiu-zhenYUDe-shuangYUANMeng-feiWANGXiao-xia*CHENGuang-huiWANGJunBIChun-xueDUYe-qiSchoolofEnvironmentalScienceandEngineeringQingdaoUniversityQingdao266071ChinaAbstractThisstudyfocusesontheinvestigationofthenitrogenNandphosphorusPremovalcharacteristicsofacombinationofenhancedphosphorusremovalEBPRwithsimultaneouspartialnitrificationendogenousdenitrificationSPNDandpost-partialdenitrificationprocess.Ananaerobic/aerobic/anoxicA/O/AoperatedsequencingbatchreactorSBRfedwithurbansewagewasoptimizedbyregulatingtheaerationrateandanoxictime.Basedonthisoptimizationdeep-levelnitrogenandphosphorusremovalsfromlowC/Nurbansewagecouldberealized.TheexperimentalresultsshowthattheeffluentPO3-4-Pconcentrationdecreasedfrom0.06mg·L-1to0mg·L-1theeffluentNH+4-NNO-2-NandNO-3-Nconcentrationsgraduallydecreasedfrom0.1818.79and0.08mg·L-1to016.46and0.05mg·L-1respectivelyandtheTNremovalefficiencyincreasedfrom72.69%to77.97%whentheaerationratedecreasedfrom1.0L·min-1to0.6L·min-1andtheanoxicdurationwas180min.WiththereductionoftheaerationratetheSPNDphenomenonbecamenotableandtheSNDrateincreasedfrom19.18%to31.20%.Whentheanoxicdurationwasextendedfrom180minto420mintheeffluentPO3-4-PNH+4-NandNO-3-Nconcentrationsstabilizedat~00and0.03mg·L-1respectively.TheeffluentNO-2-Nconcentrationwasaslowas3.06mg·L-1theSNDratewas~32.21%theTNremovalperformancegraduallyimprovedandtheTNremovalefficiencywasashighas99.42%.Thusdeep-levelnitrogenandphosphorusremovalscouldberealizedwiththeSPNDPR-PDsystem.Keywordssimultaneouspartialnitrification-endogenousdenitrificationSPNDendogenouspartialdenitrificationenhancedbiologicalphosphorusremovalEBPRphosphorousaccumulatingorganismsPAOsurbansewage“”、、1.2~56~89101112C/N13.EBPRPAOsPAOs/14~17.1AOA-SBRC/N18.SPND19.40%25%20.SBR、、、、、21.SBREBPRSPND.EBPRPAOs、SPNDNO-x-NNO-2-NNO-x-N22.SPNDPR23.24SBRSPNDPRTN11.92mg·L-1.TNC/N//-SPNDPR-PD.C/N≤4//SBR//SPNDPR-PDCOD、、SPNDPR-PDC/N.11.1SBR13L8L3L..1.1SPNDPR-PDTable1ParametersfortheoptimaloperationoftheSPNDPR-PDsystem11~21d222~39d340~55d456~111d4-156~72d4-273~85d4-386~99d4-4100~111d/L88888883∶83∶83∶83∶83∶83∶83∶8//////////////min180180180180180180180/min180180180180180180180/min—180180240300360420SRT/d10101010101010HRT/h16242426.6729.333234.67/L·min-11.01.00.60.60.60.60.6DO/mg·L-1≤0.8≤0.8≤0.5≤0.5≤0.5≤0.5≤0.51.2COD253.79~372.48mg·L-1NH+4-N52.15~82.07mg·L-1NO-2-N<1mg·L-1NO-3-N<2mg·L-1PO3-4-P3.55~9.62mg·L-1pH7.2~7.6.180dSBRMLSS3961mg·L-1SV32%SVI80.79mL·g-1.1.31.3.115~20μmNH+4-NNO-2-NN-1-NO-3-NPO3-4-PCOD5B-3ACODMLSSDOpHPHS-3CpH.163401.3.2CODinsCODinsSPNDPR-PDCODPAOsGAOsmg·L-1.CODins=ΔCOD-1.71ΔNO-2+2.86ΔNO-3ΔCOD、ΔNO-2ΔNO-3COD、NO-2-NNO-3-Nmg·L-11.712.86NO-2-NNO-3-NCOD.1.3.3SNDSNDSPNDPR-PDSND=1-ΔNO-2+ΔNO-3ΔNH+[]4×100%ΔNH+4、ΔNO-2ΔNO-3NH+4-N、NO-2-NNO-3-Nmg·L-1.22.1SPNDPR-PDPO3-4-PSPNDPR-PD、PO3-4-PPO3-4-P1.1SPNDPR-PDPO3-4-PFig.1VariationsofthePO3-4-PconcentrationduringtheoperationperiodoftheSPNDPR-PDsystem111~21dPO3-4-P5.97mg·L-1PO3-4-P16.74mg·L-120.38mg·L-1PO3-4-P2.61mg·L-10.PRA14.43mg·L-118.57mg·L-1PUA19.79mg·L-1..PO3-4-P57.70%12d99.06%13~21d100%.10dSPNDPR-PD.222~39d///PO3-4-P0.60mg·L-1PO3-4-P0.06mg·L-1SPNDPR-PD.PO3-4-P19.99mg·L-129.11mg·L-1PRAPUA20.79mg·L-126.92mg·L-121.44mg·L-129.11mg·L-1.PO3-4-P99.02%.PO3-4-P.340~55d1.0L·min-10.6L·min-1PO3-4-P0PO3-4-P100%.PRAPUA21.21mg·L-122.75mg·L-1.PO3-4-P2631AOA-SBRC/N0.67mg·L-120.60mg·L-1.PAOsDO.456~111d240、300、360420min.、、PO3-4-P5.88、0.07、0.01mg·L-199.78%.4-156~72dPO3-4-P24.34mg·L-132.03mg·L-1.CODins2.4-2~4-473~111dPO3-4-P32.49mg·L-1.180min240min240min420min.2.2SPNDPR-PDCODSPNDPR-PD、COD2.2SPNDPR-PDCODFig.2VariationsoftheCODconcentrationduringtheoperationperiodoftheSPNDPR-PDsystem211~21dCOD298.17mg·L-1COD68.70mg·L-155.44mg·L-17d84.18mg·L-174.65mg·L-167.07mg·L-151.38mg·L-1COD79.56%7d73.03%83.41%CODins31.81mg·L-162.71mg·L-1.8~21dCODCOD0.37mg·L·min-10.10mg·L·min-1.COD.222~39d///COD295.79mg·L-1COD.、COD59.80、48.4043.48mg·L-1.COD4.92mg·L-1.COD85.21%CODins59.83mg·L-1.COD.340~55d1.0L·min-10.6L·min-1、COD71.58、52.1750.66mg·L-1.COD、CODCOD0.41、0.110.02mg·L·min-1CODCODins83.37%58.48mg·L-1.COD.COD.456~111d240、300、360420min、36340COD69.08、49.7347.00mg·L-1.COD85.06%.COD.4-156~72dCODins51.31mg·L-172.12mg·L-14-2~4-473~111dCODins71.68mg·L-1.1.0L·min-10.6L·min-1、///、180min420minSPNDPR-PDCODCOD80%.2.3SPNDPR-PDSPNDPR-PD、NH+4-N3.3SPNDPR-PDNH+4-NFig.3VariationsoftheNH+4-NconcentrationduringtheoperationperiodoftheSPNDPR-PDsystem311~21dNH+4-N64.68mg·L-1NH+4-N26.32mg·L-10.27mg·L-1NH