后置短程反硝化AOASBR工艺实现低CN城市污水的脱氮除磷巩秀珍

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-mail]*[e-mail]sphorusＲemovalfromLowC/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