CSTR和MBR反应器的短程硝化快速启动张婷

38820178ENVIＲONMENTALSCIENCEVol．38No．8Aug．2017CSTＲMBＲ11231231123*SamwineThomas11．2150092．2150093．215009CSTＲMBＲ、3．C/N=130℃±1℃pH7.5～8.0DO0.6～1.0mg·L－1/1∶315min∶45minHＲTCSTＲMBＲ56d44dMBＲ．14d、28d56dCSTＲMBＲ51%、66%、89%50%、71%、93%NO－3-N/MLVSS7.4、4.0、1.77.6、3.5、1.0mg·g·h－1MBＲ28d56dNO－3-N．SVI55～110mL·g－1MLVSS/MLSS0.6～0.8CSTＲMBＲ．MBＲ．X703.1A0250-3301201708-3399-07DOI10．13227/j．hjkx．2017010802017-01-112017-03-1651578353BK2016035616KJB610013XKQ2015041993～[e-mail]*[e-mail]-upofShortcutNitrificationinaCSTＲandanMBＲZHANGTing1WUPeng123SHENYao-liang123LGang1XUYue-zhong123*SamwineThomas11．SchoolofEnvironmentalScienceandEngineeringSuzhouUniversityofScienceandTechnologySuzhou215009China2．JiangsuCollaborativeInnovationCenterofTechnologyandMaterialofWaterTreatmentSuzhou215009China3．JiangsuKeyLaboratoryofEnvironmentalScienceandEngineeringSuzhou215009ChinaAbstractInordertoachievefaststart-upofshortcutnitrificationacontinuousstirredtankreactorCSTＲandamembranebioreactorMBＲwereselectedforacomparativestudyaboutthestart-upcharacteristicofshortcutnitrification．Thedifferencesinthreeaspectsofthetworeactorswereinvestigatednamelystart-uptimenitrogentransformationandsludgeperformance．Theresultsshowedthatthestart-upofshortcutnitrificationwassuccessfullyachievedintheCSTＲandMBＲafter44and56daysofoperationrespectivelywithinfluentC/N=1temperaturearound30℃±1℃pHof7.5-8.0anddissolvedoxygenDOof0.6-1.0mg·L－1aswellascombininganoxic/aerobicratio1∶315min∶45minwithshortenedhydraulicretentiontimeHＲT．Thestart-upperiodoftheMBＲwasshorter．Onthe14th28thand56thdaytheaveragenitriteaccumulationefficienciesintheCSTＲwere51%66%and89%respectivelyand50%71%and93%intheMBＲandnitrateformationratesoftheCSTＲwassuccessively7.44.0and1.7mg·g·h－1NO－3-N/MLVSSrespectivelyand7.63.5and1.0mg·g·h－1NO－3-N/MLVSSfortheMBＲ．AhighernitriteaccumulationefficiencyandalowernitrateformationrateweredetectedintheMBＲonthe28thand56thdayrespectivelywhichcouldbebeneficialtothefaststart-upofshortcutnitrification．DuringtheoperationperiodtheshortcutnitrificationsludgeinthetworeactorswasyellowthesludgevolumeindexSVIwasbetween55and110mL·g－1andthemixedliquorvolatilesuspendedsolidsMLVSS/mixedliquorsuspendedsolidsMLSSratiowasaround0.6-0.8．Thegoodsludgeperformancecreatedfavorableconditionsforthefaststart-upofshortcutnitrificationinboththeCSTＲandMBＲ．InconclusiontheMBＲexhibitedbetterperformanceinthefaststart-upofshortcutnitrification．KeywordsshortcutnitrificationcontinuousstirredtankreactorCSTＲmembranebioreactorMBＲfaststart-upintermittentaeration25%30%1．23．45．SBＲ/6．SBＲ、38．78、910UASB1112．．．AOB、13．、．CSTＲ、SHAＲON14．MBＲ、15AOB．CSTＲMBＲ、、CSTＲMBＲ．11.1CSTＲ1MBＲ2．CSTＲ20cm8cm24cm1.9L0.7L．．MBＲ10cm8cm24cm1.9L．．DO0.6～1.0mg·L－1．30℃±1℃．CSTＲMBＲ1．1CSTＲMBＲTable1ConcreteoperationoftheCSTＲandMBＲ/d/HＲT/hⅠ1～140∶15Ⅱ15～281∶35Ⅲ29～421∶34Ⅳ43～561∶331.2A2/O1CSTＲFig．1Schematicofthecontinuousstirredtankreactor2MBＲFig．2SchematicofthemembranebioreactorCSTＲMBＲ3500mg·L－1SVI59mL·g－162mL·g－1．SＲT30d．1.3CSTＲMBＲ．COD、NH+4-N、TPpH、2．pH7.5～8.0．2Table2Characteristicsofthesyntheticwastewater/mg·L－1/mg·L－1COD130～160CoCl2·6H2O0.15NH+4-N140～160MnCl2·4H2O0.12TP4～6ZnSO4·7H2O0.12MgSO410NaMoO4·2H2O0.06CaCl210CuSO4·5H2O0.03FeCl3·6H2O1.5KI0.03H3BO30.1NaHCO31.41d00438CSTＲMBＲ16NH+4-NNO－2-NN-1--NO－3-NCOD-TN-MLSS、MLVSSSVI30minpHpHS-9VYSI550A．．．DO0.6～1.0mg·L－115minNH+4-N、NO－2-NNO－3-N．22.12.1.1CSTＲCSTＲCOD130～160mg·L－1NH+4-N140～160mg·L－1pH7.5～8.0DO0.6～1.0mg·L－1/1∶315min∶45minHＲT56d7d85%．3CSTＲFig．3Changesofinfluentandeffluentparametersinthestart-upstageoftheCSTＲ356d4．Ⅰ1～14d14dNH+4-N28%97%．10dNO－2-NNO－3-N14d76mg·L－150%．NH+4-NNO－3-N．Ⅱ15～28d/1∶315min∶45min10minDO．24d93%NO－2-N93mg·L－1NO－3-N43mg·L－168%．/17．AOB“”AOBAOB“”NOB18．4TN3%．．Ⅲ29～42dⅣ43～56d/1∶315min∶45minHＲT4h3h．ⅢⅣ89%85%．HＲT．38d25mg·L－180%54dNO－3-N11mg·L－191%．NOBHＲTNOBNO－2-N19．C/N=1．20SBＲC/N=194%～99%Wu214SBＲC/N0、1、24C/N=1N/MLVSS0.019mg·mg·h－1．C/N=1AOB．2.1.2MBＲMBＲCSTＲ．MBＲ44d7d85%1043384CSTＲTNCODFig．4ChangesofTNandCODintheinfluentandeffluentoftheCSTＲ．2245d80%．MBＲ5MBＲCSTＲ4．CSTＲMBＲ4．ⅣMBＲ1.057kg·m3·d－1CSTＲ1.024kg·m3·d－1．CSTＲNOBAOBMBＲAOB．5MBＲFig．5Changesofinfluentandeffluentparametersinthestart-upstageoftheMBＲ46MBＲTN5%CSTＲ．MBＲDO、23．35MBＲCSTＲ．MBＲAOBNO－2-NNOBMBＲ18NO－3-N．6MBＲTNCODFig．6ChangesofTNandCODintheinfluentandeffluentoftheMBＲ2.2CSTＲMBＲ14、2856d．7．7a7bCSTＲMBＲ14dNH+4-N、NO－2-NNO－3-N5．NH+4-NCSTＲMBＲ225min210minNH+4-N20mg·L－1AOBMBＲAOB．CSTＲMBＲ240min、225min50%NO－2-NNO－3-N84mg·L－188mg·L－1．NH+4-NNO－2-N．5CSTＲMBＲNO－3-N/MLVSS7.4mg·g·h－17.6mg·g·h－151%50%．7c7dCSTＲMBＲ28dNH+4-N、NO－2-NNO－3-N/1∶315min∶45min5．NH+4-NCSTＲMBＲ94%95%．10min20438CSTＲMBＲ7CSTＲMBＲFig．7NitrogentransformationfordifferentstagesoftheCSTＲandMBＲDOAOBDONOBAOBNOB24．5CSTＲMBＲ66%71%NO－3-N/MLVSS4.0mg·g·h－13.5mg·g·h－1．NOBNO－3-N．NOBNO－3-NHＲTNO－3-N．7e7fCSTＲMBＲ56dNH+4-N、NO－2-NNO－3-N/1∶315min∶45min3．3hCSTＲMBＲ85%89%28dHＲT．NH+4-NCSTＲMBＲNO－2-N89%93%NO－3-N13mg·L－17mg·L－1．MBＲNO－3-N．CSTＲMBＲNO－3-N/MLVSS1.7mg·g·h－11.0mg·g·h－114d28d304338HＲTNOB．2.32.3.114d8．25SBＲC/N2．8CSTＲMBＲFig．8ColorofthesludgeindifferentstagesofCSTＲandMBＲ2.3.2SVIMLVSS/MLSSⅠSVI55～62mL·g－1．AOBNOB．ⅡⅣS