低溶解氧SBR除磷工艺研究陈滢

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SBR陈 滢1, 彭永臻1, 杨向平2, 曾 薇1, 刘秀红3(1.北京工业大学环境与能源工程学院,北京100022;2.北京市城市排水公司,北京100022;3.哈尔滨工业大学市政环境工程学院,黑龙江哈尔滨150090)   : 试验研究了低溶解氧条件下SBR的除磷性能。结果表明,在全程低氧曝气的SBR系统内聚磷菌可得到富集,并出现了明显的放磷、过量吸磷现象。污泥负荷对COD去除率和除磷效率影响较大,除磷最佳的污泥负荷为0.26kgBOD/(kgMLSS·d),其时COD去除率为85%,除磷效率为96%,出水PO3-4-P1.0mg/L;最佳污泥负荷下的污泥沉降性能良好,污泥负荷过高会导致非丝状菌污泥膨胀。  : SBR; 低溶解氧; 除磷; 污泥负荷; 非丝状菌污泥膨胀:X703.1  :C  :1000-4602(2004)08-0040-03  :“”(2002BA806B04); (20377003); (01KJ-001)StudyonPhosphorusRemovalProcessbyUsingSBRatLowDOLevelCHENYing1, PENGYong-zhen1, YANGXiang-ping2, ZENGWei1, LIUXiu-hong3(1.SchoolofEnvironmentalandEnergyEngineering,BeijingUniversityofTechnology,Beijing100022,China;2.BeijingUrbanDrainageCompany,Beijing100022,China;3.SchoolofMunicipalandEnvironmentalEngineering,HarbinInstituteofTechnology,Harbin150090,China)  Abstract: StudywasmadeonphosphorusremovaleffectatlowDOlevelbyusingSBRsystem.There-sultshowsthat,theconcentrationofphosphorusaccumulationbacteriacanbeobtainedinSBRsystematall-timelowDOaeration,significantphosphorusreleaseandluxuryphosphorusuptakealsooccursunderthiscon-dition.SludgeloadhasgreaterinfluenceonCODandphosphorusremovalrate,theoptimumsludgeloadforphosphorusremovalis0.26kgBOD/(kgMLSS·d),96%ofphosphorusremovalrate,85%ofCODremovalrateandeffluentPO3-4-P1.0mg/Lcanbeachievedatthatcondition.Thesludgealsoshowsgoodset-tleabilityattheoptimumsludgeload,andthehigherloadwillleadtonon-filamentousbacteriasludgebulking.  Keywords: SBR; lowDOlevel; phosphorusremoval; sludgeload; non-filamentousbacteriasludgebulking1 材料和方法1.1 SBR1。SBR14L,,()。,。·40·      2004Vol.20          CHINAWATER&WASTEWATER           No.8(20±1)℃。1 SBRFig.1 SchematicdiagramofSBRexperimentalsetup1.2 :COD=224~463mg/L(365mg/L),BOD=112~213mg/L(182mg/L),TP=8.2~15.2mg/L(11.29mg/L),PO3-4-P=7.63~13.2mg/L(10.05mg/L),pH=7.4~7.8(7.65)。86%,99%。。1.3 COD:COD;BOD:WTWTS606/SBOD;TP:;PO3-4-P:;MLSS:;DO:。2 结果与讨论2.1 SBRSBR(),:30min0.1mg/L;0.35mg/L,0.55mg/L。2min、4h、1h、10min,2,。3000mg/L,12d。30d,(PAOs)SBR,。SBR、2。2 、、PO3-4-PFig.2 VariationsofDOconc.,aerationrateandPO3-4-Pconc.  2,,。10.56mg/L,30min,,33.17mg/L,14.13mgP/(gSS·h)。,。(0.55mg/L),。,PHB,。3.5h0.38mg/L,2.93mgP/(gSS·h),96.4%。,COD85%,96%,1.0mg/L。,,。、,4.0mg/L,6.5mg/L。,,(、)。,,。,。,。(0.1mg/L)·41·2004Vol.20                              No.8,,PAOs。,PAOs。,,VFAs,90mgCOD/L,。2.2 。:0.20、0.26、0.57kgBOD/(kgMLSS·d),6、4、2h。SBR100,,0.26kgBOD/(kgMLSS·d)COD;0.57kg-BOD/(kgMLSS·d),COD58%,,。0.2kgBOD/(kgMLSS·d)COD89%,56%,。,,。PHB,。,0.26kgBOD/(kgMLSS·d)COD。,。,0.200.26kgBOD/(kgMLSS·d),,SVI150mL/g。0.57kgBOD/(kgMLSS·d),SVI200mL/g。,,。Eikelboom,[NS0.40kgBOD/(kgMLSS·d)]。,。,,,。,,。3 结论① SBR,,。② COD,COD,。,0.26kgBOD/(kgMLSS·d),1mg/L,96%,COD85%。③ ,0.57kgBOD/(kgMLSS·d)。:[1] MinoT,vanLoosdrechMCM,HeijnenJJ.Microbiologyandbiochemistryoftheenhancedbiologicalphosphateremovalprocess[J].WatRes,1998,32:3193-3207.[2] SudianaIM,MinoT,SatohH,etal.Metabolismofenhancedbiologicalphosphorousremovalandnon-enhancedbiologicalphosphorousremovalsludgewithacetateandglucoseascar-bonsource[J].WatSciTech,1999,39:29-35.[3] NaidongW,PengJ,HillG.Biochemicalmodelofglucosein-ducedenhancedbiologicalphosphorousremovalunderanaero-biccondition[J].WatRes,2002,36:49-58.[4] ,,.[J].,1997,:12-15.[5] ,.[M].:,1998.[6] BrdjanovicD,SlametA,LoosdrechtMCM,etal.Impactofexcessiveaerationonbiologicalremovalfromwastewater[J].WatRes,1998,32(1):200-208.[7] ImreTakács,ErnöFleit.Modelingofthemicromorphologyoftheactivatedsludgefloc:lowDO,lowF/Mbulking[J].WatSciTech,1995,31:235-243.:(010)67392627E-mail:eleanor75@sina.com:2004-03-15·42·2004Vol.20                              No.8

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