富氧生物膜法修复微污染水源的机理研究肖羽堂

146200511　　　　　ResourcesandEnvironmentintheYangtzeBasin　　　　　　Vol.14No.6Nov.2005　　:1004-8227(2005)06-0796-05肖羽堂,赵美姿,高立杰(,300071)　:、,2.6～3.1mg/L20℃～22℃,7d,90%。,,,。90～300NTU、NH+4-N0.5～10.0mg/L、CODMn4.0～10.8mg/L、2～8HRT1.3h、DO7.5～10.2mg/L、g/w0.5/1,,,。,0.09～0.13mm,,,,、,,,。,,。,。。:;;:A　　,Ⅳ、Ⅴ,[1]。,,,[2～4]。[4～6],、,,。1　1.1　25000m3/d,2,2,:××=23.2m×3.0m×7.5m,1.0m,5.3m,0.5m。1.07∶1,1.87h,1.3h,0.066m3/minm2。,3L41WD3,,:Q=9.27m3/min,H=7000mmH2O,P=18.5kW,Υ200。2。1.2　,2.6～3.1mg/L20℃～22℃,()(%)1。1,20℃7d,90%。,。,:0.5∶1,0.033m3/minm2,DO8～10mg/L,NH+4-N90%。,,NH+4-N,:2005-01-13;:2005-05-08:“”(96-909-03-01-02)、(J02014).:(1966～　),,,,,.1　()(%)Fig.1　RelationBetweenNH+4-NRemovalEfficiencyandCultureTimeofHangingFilmintheNaturalConditionsfortheStartupofBiologicalPond8h。,,,,NH+4-N;NH+4-N,,NH+4-N。,,,,。,(),。,,,,,。,,,,,,。,,,。,,,,,。,,(≤200NTU)31,1;(200NTU)21,1。,(≤200NTU)11,2;15d1,2,3～5,,。2　2.1　90～300NTU、NH+4-N0.5～10.0mg/L、CODMn4.0～10.8mg/L、2～8,HRT1.3h,DO7.5～10.2mg/L,g/w=0.5/1,。,,。,(0.10～0.20mm),(0.07～0.12mm)。,,0.12～0.20mm,,0.07～0.10mm。3。3　Tab.3　DepthDistributionoftheBiofilmonthePackings(m)0.53.56.00.53.56.00.53.56.0(mm)0.20.140.100.160.130.090.120.100.07　　,4。,4。,,。。,。5。、、,6。。、,。,27℃～30℃,,,NH+4-N,0.15797　6　　　　　　　　　:4　Tab.4　BacteriumDistributionoftheBiofilmonthePackings+++++++--+++++++--++++-++++-+++-++-+++-++++++++++++++-+++:+++;++;+;-.5　Tab.5　BacteriumDistributioninthePackings++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++////:+++;++;+.6　Tab.6　MainKindsofAnimalsattheSurfaceofBiofilmonthePackings:(Vorticellasp.):(Aeolosomasp.)　　　　　　(Zoothzmnimsp.)　　(Rotatoriasp.)　　　　(Philodinasp.):(Hydra)　　　　　　　(Lacinulariasp.):　　　　　　　:(Derosp.)　　:(Plumatellasp.)　　　(Aulophorussp.):　　　　　　　　　(Naissp.)/　　　(Stylariasp.)mm;,10℃～12℃,,,NH+4-N,0.11mm。,NH+4-N。BOD,。15℃,。20℃～35℃,,5℃。。NH+4-N,。,;,。,,。、,、、、。,,,。,,,0.2mm,0.09～0.13mm。,,。,,,、。,,HRT1.3h,g/w0.5∶1,DO7～10mg/L,pH6.5～7.4,(0.07～0.2mm),。2.2　、,、、。,β—,,。,,、。,;,、;798　　　　　　　　　　　　　　　　　　　　　　　14　。,,,NH+4-N、,,,,,。NH+4-N、,、。NH+4-N、、、、,。,,。,,,、,,。—,——,,-,。,,,,。NH+4-NCODMn,、。,;、,;,,,、;、,,;,、,。,,,,NH+4-N、。,,。NH+4-N、,,。,、,。,。,,,NH+4-N。,,。[6～7]。3　,。,,、、、。,,,,。,。,。,。:[1]　.、[J].,1998,24(2):18～20.[2]　.[J].,1995,23(4):376～379.[3]　LimK-Ho,ShinH-Sik.Operatingcharacteristicsofaeratedsubmergedbiofilmreactorfordrinkingwatertreatment[J].WatSciTech,1997,36(12):101～108.[4]　TakasakiM,Hokim,AndersonWC.Thesubmergedbiofilmprocessasapretreatmentforpollutedrawwaterfortopwatersupply[J].WatSciTech,1990,22(2):107.[5]　,.[J]..1998,14(2):8～12.[6]　,　.[J].,1999,5(1):64～68.[7]　LazarovaV,NogueiraR,HuckyPM.Influenceofdissolvedoxygenonnitrificationkineticinacirculatingbedreactor[J].WatSciTech,1998,37(4/5):189～193.799　6　　　　　　　　　:REHABILITATIONMECHANISMOFSLIGHTLYPOLLUTEDWATERBYOXYGENENRICHMENTANDBIOFILMDEVICEXIAOYu-tang,ZHAOMei-zi,GAOLi-jie(EnvironmentalSchoolofScienceandEngineeringofNankaiUniversity,Tianjin300071,China)Abstract:TheauthorsusedtheelasticpackingforbiofilmandfinebubbleaerationforoxygenenrichmentinthesystemofbiologicalcontactoxidationtorehabilitatetheslightlypollutedChuanyangRiverinShang-hai.ParametersofwaterqualityinChuanyangRiverwereasfollows:turbidity90～300NTU,NH+4-N0.5～10.0mg/L,CODMn4.0～10.8mg/L,andpollutionindex2～8.Establishmentofbiofilmwassuc-cessfulwithinsevendayswiththeinfluentwaterhavingaconcentrationofNH+4-N2.6～3.1mg/Landtemperature20℃～22℃.TheremovalratesofNH+4-Nwasmorethan90%.Theauthorswashedthepackingandremovedthesludgeperiodicallyinordertoavoidtheoccurrenceofanaerobicconditioninbio-filmthatwoulddecreasetheremovalrateofthepollutants.Underthenormalconditionofbio-rehabilita-tion,i.e.HRT1.3h,DO7.5～10.2mg/L,theratioofgastowater0.5,Theauthorsobservedabio-phaseenrichedwiththebacterialspeciesofvariousphysiologicalcharacteristics(aerobic,heterotrophic,andautotrophic).Thebiofilmthicknesswasintherangeof0.09to0.13mmandincreasedwithdecrea-singNH+4-Nofrawwater.Duetotheadequateconcentrationofdissolvedoxygen,theratesofmasstransportationandthusNH+4-Ndegradationwererapid.So,about90%removalofNH+4-Nwasa-chievedwithinanhour.Keywords:watersource;slightpollution;bio-rehabilitation800　　　　　　　　　　　　　　　　　　　　　　　14