低温下投加臭氧控制丝状菌膨胀的生产性试验研究刘振超

1211．2660332．266021MSBＲ、。。DSVI、MLSS、MLVSS。DSVI。。。X703A1000－4602201515－0035－05EffectofOzoneonFilamentousBulkingunderLowTemperatureLIUZhen-chao1LIFeng2LIQian11．SchoolofEnvironmentalandMunicipalEngineeringQingdaoTechnologicalUniversityQingdao266033China2．QingdaoHaiboheWWTPQingdao266021ChinaAbstractInawastewatertreatmentplantwhichusesMSBＲasitsbiologicaltreatmentunitthebloomsoffilamentousbacteriaandfilament’sextensionunderlowtemperaturecanmakethezoogloeain-tertwinedestroytheflocstructureresultinapoorsettleabilityreducetheseparationofsludgeandwa-terandinseverecasescanleadtowashout．Addinglow-doseozonewhichreactswithrecycledsludgeisawaytoresolvethisproblem．ThevaluesofdilutedsludgevolumeindexDSVIMLSSandMLVSSweremonitoredandthesludgeflocmorphologywasobservedbymicroscopy．TheDSVItrendedtode-creaseandtheflocbecamemorecompactafteraddingozone．Thereactionbetweenlow-doseozoneandactivatedsludgecouldinhibitthegrowthoffilamentousbacteriaandimprovetheflocstructurethusim-provingthesettleabilityandcontrollingthesludgebulking．Ozonereactiondidnotdestroythemetabolismofothermicroorganismsensuringtheeffluentqualitytomeetthedischargestandard．Keywordsfilamentousbulkingozonelowtemperaturesettleabilityflocstructure、、。1。95%。、。Ekama。Jenkins·53·311520158CHINAWATEＲ＆WASTEWATEＲVol．31No．15Aug．2015、COD。VanLeeuwen。11.1MSBＲ16×104m3/dCOD、BOD5、SS、TN、NH3－N、TP750、350、400、70、53、6．5mg/LA。MSBＲA2/OSBＲ1。1#7#SBＲ2#3#4#5#、5#A6#/1#A7#A/。MSBＲ4#、5#、5#A、6#、SBＲ1#、1#A7#、7#A27．1h。15～25d2～4mg/L3000～6000mg/L10～27℃。1MSBＲFig．1LayoutofMSBＲ1.25A、B、C、D、EC。3#。。6#A。。。5kg/h10m3、、。1.3MLSS、MLVSS、DSVI。、。2。20142—610—12。ABC。A2014392．72g/kgVSS3274．64g/kgVSS435．12g/kgVSS。B、C5．12、2．71g/kgVSS1。1Tab．1Stagesofexperiment/kg·h－1/m3·h－1/mg·L－1/g·kg－1VSSA39—27225029402．72327—43425034454．6443—15525039005．12B55—68525039005．12C1027—125220036852．712.12.1.1201421—3911℃14℃MSBＲDSVI270mL/g2。·63·3115．watergasheat．com2DSVIFig．2ChangeofDSVIinwarmingperiodA14℃16．8℃DSVI302mL/g132mL/g203mL/g。317DODSVI。DSVI。。C。415—5516．8℃17．8℃DSVI132mL/g156mL/g144mL/g。DSVI。B17．8℃22℃DSVI145mL/g95mL/g117mL/g。68DSVI。22℃。A、BDSVI。DSVIDSVIDSVI。2。2.1.220℃DSVI130mL/g。C20℃14℃DSVI126mL/g111mL/g116mL/g3。DSVI。3DSVIFig．3ChangeofDSVIincoolingperiod125—2514℃DSVI8d107mL/g122mL/gDSVI。DSVI。。2013DSVI110～210mL/g。MSBＲ。。2.21。400。·73·．watergasheat．com311534。。4×400Fig．4MicrographsofactivatedsludgebeforeandafterozonetreatmentA、。2.3。MSBＲC2。2Tab．2OperationconditionsindifferentperiodsCOD/kg·kg－1VSS·d－1/kg·kg－1VSS·d－1/mg·L－1CODSS21—390．116313．8316．991．9730．9539—4150．155321．3716．832．6469．7415—550．152517．5015．871．3959．2555—680．173614．3123．230．7925．7968—300．132012．4624．260．3330．23101—270．287427．4122．940．7361．931027—1250．181925．5618．030．2940．87125—250．120218．0416．50．6930．33COD、NH3－N、SS。TN、TP。。DO、。COD50mg/L90%95%。ACOD。BCOD0．1736kg/kgVSS·d0．15kg/kgVSS·d。CCOD0．2874kg/kgVSS·d。COD。。。5。7%。5Fig．5Changeofnitrificationratebeforeandafterozonetreatment2A、。。。。C·83·3115．watergasheat．com。SS。ASSC。SSSS。。103．5%、115．7%、121．3%132．9%、159%。。3。。。1．J．201127171－5．2．J．20132923128－131．1989－。[e-mail]櫆櫆櫆櫆櫆櫆櫆櫆櫆櫆櫆櫆櫆櫆櫆櫆櫆櫆櫆櫆櫆櫆櫆櫆櫆櫆櫆櫆櫆櫆櫆櫆櫆櫆櫆櫆櫆櫆櫆櫆櫆櫆櫆櫆櫆櫆2015－04－25341AgarrySEDurojaiyeAOSolomonBO．Microbialdeg-radationofphenolsAreviewJ．IntJEnvironPollut200832112－28．2．J．2013731029－1034．3LefebvreOMolettaＲ．TreatmentoforganicpollutioninindustrialsalinewastewaterAliteraturereviewJ．Wa-terＲes200640203671－3682．4．J．20082871272－1278．5．CN－6J．201032582－87．6．O3－BACJ．2011379139－142．7．J．2010336301－304．1971－。[e-mail]2015－01－10·93·．watergasheat．com3115