SBR工艺低溶解氧丝状菌污泥膨胀成因及控制方法高春娣

3912201312JOUＲNALOFBEIJINGUNIVEＲSITYOFTECHNOLOGYVol．39No．12Dec．2013SBＲ100124sequencingbatchreactorSBＲ．/anoxic/oxicA/OdissolvedoxygenDOρDO0.5mg/LH．hydrossis．SBＲA/OF/M0.83kg/kg·dρDO2.0mg/LsludgevolumeindexSVI300mL/g．fluorescenceinsituhybridizationFISHH．hydrossistotalnitrogenTN31.17%COD65.04%．F/M0.37kg/kg·dρDO2.0mg/LSVI150mL/g．NH+4-N100%ρNH+4-N0TNCOD70.7%73.9%．ρTNρCOD18.446.9mg/LA．SBＲF/MH．hydrossisFISHX703.1A0254－0037201312－1880－072012-12-18．51108005．1973—[e-mail]CauseAnalysisUnderLowDissolvedOxygenandControlMethodinSBＲProcessGAOChun-diJIAOEr-longLIHaoWANGWei-xiaoPENGYong-zhenCollegeofEnvironmentalandEnergyEngineeringBeijingUniversityofTechnologyBeijing100124ChinaAbstractBytreatingrealdomesticsewagewhichislowρC/ρNinsequencingbatchreactorSBＲthecauseoffilamentoussludgebulkingandtheeffectofcontrollingfilamentoussludgebulkingunderlowdissolvedoxygenwithdifferentoperationpatternswereinvestigated．ＲesultsshowedthatwhenthedissolvedoxygenDOvaluewas0.5mg/Linanoxic/oxicprocessA/OfilamentoussludgebulkinghappenedandH．hydrossiswasthedominantfilamentousbacteriainfilamentousbulkingsludge．DuringA/OpatterninSBＲsludgevolumeindexSVIhasmaintainedbeyond300mL/gwhenorganicloadingF/Mwas0.83kg/kg·dandtheρDOwasabout2mg/Lthesludgebulkingcouldnotbeeffectivelycontrolled．TheresultoffluorescenceinsituhybridizationFISHmanifestedthatthemainfilamentousbacteriawasalsoH．hydrossisfilamentousbacteria．InthisperiodaverageremovalratesoftotalnitrogenTNandCODwere31.17%and65.04%respectively．ThenduringaerobicpatternwhenF/Mwas0.37kg/kg·dtheρDOwasalsoabout2mg/LthesludgebulkinghasbeencontrolledeffectivelyandSVIhasremainedbelow150mL/g．InthisstagetheremovalrateofNH+4-Nreached100%nearlytheρNH+4-Nineffluentwasalmost0．AverageremovalratesofTNandCODimprovedto70.7%and73.9%respectively．TheaverageρTNandρCODineffluentwere18.412SBＲand46.9mg/LrespectivelyclosetothenationallevelAemissionstandard．KeywordssequencingbatchreactorSBＲorganicloadingsF/MlowdissolvedoxygensludgebulkingH．hydrossisfilamentousbacteriafluorescenceinsituhybridizationFISH．．1-4．2．5．6．7-9．．sequencingbatchreactorSBＲSBＲSBＲ．10-11．SBＲH．hydrossisfluorescenceinsituhybridizationFISH．11.1SBＲ1SBＲ8L．1/anoxic/oxicA/O250%F/M．、、、3dissolvedoxygenDOρDO．mixedliquidsuspendedsolidsMLSSρMLSS1900～3500mg/L23℃．A/O．1SBＲFig．1SchematicdiagramoftheSBＲ1.21．1.3COD、PO3－4-P、NH+4-N、NO－3-N、NO－2-N、MLSS、suspendedsolidSS、sludgevolumeindexSVItotalnitrogenTNmultiN/C3000AnalytikJenaAG．DOWTWMulti340i．OLYMPUS2BX61S－4300．188120131Table1WastewatercharacteristicpHρCOD/mg·L－1ρNH+4-N/mg·L－1ρNO－3-N/mg·L－1ρNO－2-N/mg·L－1ρPO3－4-P/mg·L－17.0～7.8121.8～307.243.6～80.40.02～1.290.03～0.563.6～6.922.1A/OF/M0.28kg/kg·d100%150%1∶1.753.04hρDO0.5mg/LSVI500mL/g．SVI2．2SVIFig．2VariationofSVIduringmalignantbulkingunderlowdissolvedoxygenFISHMPA60、MPA223MPA645M．parvicella12HHYH．hydrossis13．H．hydrossis3．H．hydrossis141F/M0.2kg/kg·d2345200μm0.3～0.4μm．A/O．F/M0.28kg/kg·d、．ρDO0.5mg/L．H．hydrossis．3H．hydrossisFISH1000Fig．3PictureofH．hydrossisinmalignantbulkingsludgeunderlowdissolvedoxygenbyFISH1000times2.2A/O1A/O→2h→2h→、1hF/M0.83kg/kg·d50%．23℃ρDO2.0mg/L．SVI4．448SVIA/O300mL/gSVI373mL/g．FISHHHYH．hydrossis5．288112SBＲ4A/OSVIFig．4VariationofSVIduringA/OpatternH．hydrossis．A/OSVI．5A/OH．hydrossisFISH1000Fig．5PictureofH．hydrossisinbulkingsludgeduringA/OpatternbyFISH1000times1COD6、7．1A/OSBＲNH+4-N54.94%TN31.17%COD65.04%．6A/OFig．6VariationofnitrogenremovalduringA/Opattern7A/OCODFig．7VariationofCODremovalduringA/Opattern95%15、SS16．NH+4-NTN．COD17．A/OSVI300mL/g．388120132.3．0.25～0.45kg/kg·dSVI18．Chao190.6～1.3kg/kg·d1.8kg/kg·d1F/M0.83kg/kg·d．2→2.5h→、1hF/M0.37kg/kg·d50%．23℃ρDO2.0mg/L．SVI8．8SVIFig．8VariationofSVIduringaerobic-pattern8SVI35SVI150mL/gSVI150mL/gSVI122.6mL/g．COD9、10．NH+4-N100%NH+4-NTN70.7%39.53%COD73.9%8.86%．M．Beccari20．TN．ρDO9Fig．9Variationofnitrogenremovalduringaerobic-pattern10CODFig．10VariationofCODremovalduringaerobic-patternρDO21-2223-2415N25-26．ρTN20mg/L18.4mg/LCOD50mg/L46.9mg/LρNH+4-N0A．ρDOρDO27-29．．021N、30．F/M0.37kg/kg·d488112SBＲ．．．．31A/O0.28kg/kg·d100%150%HＲT3.04hρDO0.5mg/LSVI500mL/gH．hydrossis．2SBＲF/M0.83kg/kg·dA/O→2h→2h→、1hρDO2.0mg/LH．hydrossisSVI300mL/g．FISHH．hydrossis．TNCOD31.17%65.04%．32F/M0.37kg/kg·d→2.5h→、1hSVISVI150mL/g．NH+4-N100%TNCOD70.7%73.9%．ρNH+4-N0ρTNρCOD18.446.9mg/LA．1NOVKLLAＲＲEALWANNEＲJetal．Non-filamentousactivatedsludgebulkinginalaboratoryscalesystemJ．WaterＲesearch19932781339-1346．2GUOFengZHANGTong．ProfilingbulkingandfoamingbacteriainactivatedsludgebyhighthroughputsequencingJ．WaterＲesearch20124682772-2782．3．J．201127171-5．LIUXu-liangPENGYong-zhenPENGZhao-xuetal．ViscousactivatedsludgebulkingcausedbyhighaerationrateJ．ChinaWater＆Wastewater201127171-5．inChinese4WENQin-xueCHENZhi-qiangWANGChang-yongetal．BulkingsludgeforPHAproductionenergysavingandcomparativestoragecapacitywithwell-settledsludgeJ．JournalofEnvironmentalSciences201224101744-1752．5．J．2012244129-132．ZHANGQiang．InthebiochemicalsewagetreatmentexpandresentmentandcontrolmeasureresearchJ．NorthernEnvironment2012244129-132．inChinese6．A2/OJ．2008242333-35．WUChang-yongPEN