SBR工艺对低碳量城市污水的反硝化除磷研究张红

SBR张　红,　张朝升,　荣宏伟,　张可方(广州大学土木工程学院,广东广州510006)　　　:　广州地区的城市污水含碳量低,碳、氮、磷浓度比例失调,采用传统工艺处理很难达到理想的脱氮除磷效果,为此采用SBR工艺对其进行处理,考察了该工艺的反硝化除磷效果。结果表明,在厌氧/缺氧/好氧的运行模式下,采用逐步增加缺氧段运行时间的方法可有效提高污泥的反硝化除磷性能;在试验进水水质条件下,反应器厌氧运行30min、缺氧运行3h、好氧运行1h可保证对磷的稳定高效去除,出水TP1mg/L;ORP值无法指示缺氧反硝化与吸磷过程,pH值可作为缺氧吸磷结束的指示参数,而ORP和pH值均可作为好氧吸磷结束的控制参数。　　:　低碳量城市污水;　反硝化除磷;　氧化还原电位;　pH:X703.1　　:C　　:1000-4602(2007)07-0078-05StudyofDenitrifyingPhosphorusRemovalfromMunicipalWastewaterwithLowCarbonSourcebySBRProcessZHANGHong,　ZHANGChao-sheng,　RONGHong-wei,　ZHANGKe-fang(SchoolofCivilEngineering,GuangzhouUniversity,Guangzhou510006,China)　　Abstract:　ThedisproportionofC,NandPandlowercarbonsourceinmunicipalwastewaterinGuangzhouregionarealwaysapuzzlefornitrogenandphosphorusremovalusingconventionalprocesses.Basedonthis,theeffectofdenitrifyingphosphorusremovalbyusingSBRwasinvestigated.Theresultsshowthattheefficiencyofdenitrifyingphosphorusremovalbysludgecanbeenhancedbygraduallyin-creasingtheoperationtimeofanoxicprocessundertheanaerobic/anoxic/aerobicoperationmodes.30minforanaerobicprocess,3hanoxicprocessand1haerobicprocesscaneffectivelyremovephosphorus,withTPoflessthan1mg/Lintheeffluent.ORPcannotindicateanoxicdenitrificationandphosphorusuptake,andpHcanindicatetheendofphosphorusuptakeunderanoxiccondition.However,ORPandpHbothcanbeusedthecontrolparameterfortheendofphosphorusuptakeunderaerobiccondition.　　Keywords:　lowcarbonsourcemunicipalwastewater;　denitrifyingphosphorusremoval;　oxida-tionreductionpotential(ORP);　pH　　:(04009533);　(5300438);　(06-K4-01);　(2004J1-C0051)　　(BOD560～80mg/L),、(BOD/TN=2.5～3,BOD/TP=15～17),,[1]。NO-3-N·78·23　720074　　　　　　　　　　　　CHINAWATERWASTEWATER　　　　　　　　　　　　　Vol.23No.7Apr.2007,COD。、[2、3]。,SBR,//,,、、,(ORP)pH,。1　材料与方法1.1　10LSBR(1),//,、,DO、ORPpH。1　SBRFig.1　ExperimentapparatusofSBR1.2　,NaAc、KH2PO4KNO3COD、TPTN,NH4Cl(0.104g/L)、CaCl2(0.032g/L)、MgSO4(0.06g/L)、FeSO4(0.0012g/L),1。1　Tab.1　Rawwastewaterqualitymg·L-1CODBOD5NH+4-NTNTP80～20045～10820～3021～326～81.3　,,/,30,。//,,,;,45。1.4　COD:;:;:;:N-(1-)-;:;MLSS:;DO、ORP、pHWTW。2　结果与讨论2.1　/,、,。,4000～4200mg/L,14d,//,,,2。2　Tab.2　SBRoperationmodeinenhancedperiodofdenitrifyingphosphorusremoval/h/h/h/(mg·L-1)1～71.01.03.012.05～158～141.01.52.517～18.0915～251.02.02.019.28～23.0926～331.02.51.525～26.7234～451.03.01.030.46～37.89　　2、3。2　PO3-4-PFig.2　VariationofPO3-4-Pconcentrationinenhancedperiodofdenitrifyingphosphorusremoval·79·　,:SBR23　73　NO-3-NFig.3　VariationofNO-3-Nconcentrationinenhancedperiodofdenitrifyingphosphorusremoval2,,,,54.42mg/L4033.18mg/L;13.70%99.16%;400.28mg/L,40//。45,,。3,40,35mg/L,1.42mg/L,。30min,,,//,。2.2　2.2.1　,,。,,。1h,4。4,,,30min,,45min。45min,,,30～45min。4　PO3-4-PFig.4　VariationofPO3-4-Pconcentrationunderanaerobiccondition2.2.2　。TN21～32mg/L,28mg/L,28mg/L,。5。5　PO3-4-PNO-3-NFig.5　VariationofPO3-4-PandNO-3-Nconcentrationduringphosphorusuptake5,,,,1h,70.5%;1h,3h3.07mg/L,92.3%;3h,。·80·23　7　　　　　　　　　　　　　　　　　　　　　　　　　　。2.2.3　,2～3mg/L,。5,1h0.5mg/L,,1h。2.2.4　0.5h、3h、1h,3。3　Tab.3　Effectofpollutantsremovalatbestrunningtime/(mg·L-1)/%COD1.3～23.387～90.79TN5.14～1260～83.26TP0.05～0.9187～99.282.3　ORPpH0.5h、4h、2h,ORPpH,PO3-4-P、NO-3-NORPpH6、7。6、7,ORPpH。、,ORP,;1h,ORP,3h,,(6A),ORP“”,,。pH,,,pH,3h、,pH,,pH。6　PO3-4-P、NO-3-NFig.6　VariationofPO3-4-PandNO-3-Nconcentrationinatypicalperiod7　ORPpHFig.7　VariationofORPandpHinatypicalperiod　　,,ORPpH,1h、,ORP,(7B),pH,(7C),ORPpH。3　结论①　//SBR,、,,。②　,30min、3h、1h1mg/L。③　,ORP,,pH,pH;(下转第85页)·81·　,:SBR23　7,。,LBAF,,,。4　、Fig.4　ActivityofbiofilmalongLBAFbeforeandafterbackwashing4　、Tab.4　BiomassalongLBAFbeforeandafterbackwashing/m0.280.560.841.121.402.382.663.22/(mg·g-1)12.3213.1211.8611.2611.898.636.864.595.035.104.563.533.222.982.562.623　结论①　LBAF10∶1、0.43m3/(m2·h),COD、SS、、88.01%、95.18%、78.97%、52.58%21.02%。②　,,0.43m3/(m2·h)5d。:[1]　PujolF,CanlerJP,IwemaA.Biologicalaeratedfilters:Anattractivebiologicalprocess[J].WaterSciTechnol,1992,26(3):693-702.[2]　ChenJJ,McCartyD,SlackD,etal.Fullscalecasestud-iesofasimplifiedaeratedfilter(BAF)fororganicsandnitrogenremoval[J].WaterSciTechnol,2000,41(4-5):1-4.[3]　.(4)[M].:,2002.:[phone]E-mail:[e-mail]:2006-11-08(上接第81页),ORPpH,。:[1]　,,,.SBR[J].,2004,20(8):43-45.[2]　KubaT,VanLoosdrechtMCM,BrandseFA,etal.Oc-currenceofdenitrifyingphosphorusremovalbacteriainmodifiedUCT-typewastewatertreatmentplants[J].Wa-terRes,1997,31(4):777-786.[3]　BortoneG,MarsiliLibelliS,TilcheA,etal.Anoxicphos-phateuptakeinthedephanoxprocess[J].WaterSciTechnol,1999,40(4-5):177-183.E-mail:[e-mail]:2006-11-17·85·:23　7