含盐量对好氧颗粒污泥结构及处理效能的影响王立东

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王立东1,2, 李志华1,2, 王晓昌1,2, 闫 静1,2, 王耀东1,2, 刘 娜1,2(1.西安建筑科技大学环境与市政工程学院,陕西西安710055;2.西安建筑科技大学西北水资源与环境生态教育部重点实验室,陕西西安710055)   : 研究了含盐量对好氧颗粒污泥结构的影响。研究发现高含盐量有助于提高颗粒污泥的沉速,减小孔隙率,从而形成更加密实的颗粒结构。对比结果表明,在低含盐量下颗粒污泥容易形成中空结构,这是低含盐量下颗粒污泥孔隙率大的根本原因。但高含盐量下形成的菌胶团颗粒污泥容易被丝状菌颗粒污泥所取代,因此控制丝状菌的过度繁殖是采用好氧颗粒污泥处理高盐度有机废水时需要注意的问题。  : 好氧颗粒污泥; 含盐量; 沉降性能; 孔隙率:X703.1  :A  :1000-4602(2008)11-0019-04EffectofSalinityonAerobicGranularSludgeStructureandTreatmentEfficiencyWANGLi-dong1,2, LIZhi-hua1,2, WANGXiao-chang1,2, YANJing1,2, WANGYao-dong1,2, LIUNa1,2(1.SchoolofEnvironmentalandMunicipalEngineering,Xi'anUniversityofArchitectureandTechnology,Xi'an710055,China;2.KeyLaboratoryofNorthwestWaterResources,EnvironmentandEcologyMinistryofEducation,Xi'anUniversityofArchitectureandTechnology,Xi'an710055,China)  Abstract: Theeffectofsalinityonthestructureofaerobicgranularsludgewasinvestigated.Itisfoundthatthegranularsludgeculturedunderahighsalinityhashighersettlingvelocity,lowerporosityandmorecompactstructure.Voidscanbefoundinthegranularsludgeformedunderlowsalinity,whichmaybethemainreasonforthehighporosityofgranularsludgeunderlowsalinity.However,thezoogloe-algranularsludgeformedunderhighsalinitymaybesubstitutedbythefilamentousgranularsludge.Therefore,particularattentionshouldbegiventocontrollingtheexcessiveproliferationoffilamentousbacteriawhenusingaerobicgranularsludgefortreatmentofwastewaterwithhighsalinity.  Keywords: aerobicgranularsludge; salinity; settleability; porosity  :(50621140001); (863)(2006AA06Z328)  [1、2],。、、、,[3~9]。。·19·第24卷 第11期2008年6月            中国给水排水CHINAWATERWASTEWATER             Vol.24No.11Jun.2008,、、、。1 试验材料和方法1.1 (R1~3)。5cm,150cm,2.0L。(25±1)℃。(A2O)。(COD400mg/L)。:CH3COONa258.3mg/L,189.00mg/L,NH4Cl189mg/L,KH2PO428.56mg/L,NaOH8.8mg/L,MgSO4·7H2O88.56mg/L。1。1 Fig.1 Sodiumchlorideconcentrationsinreactors,1.70cm/s。、、、,。3h,2min、162min、10min、6min,45min,167min。,50%,COD1.6kg/(m3·d)。1.2 ,。、、: v=4gd(1-ε)(ρp-ρw)3ΨCDρw(1) ε——— Ψ———,1 CD———,[10] ρp——— ρw——— d———2 结果和讨论2.1 ,,2。2 Fig.2 Meansizesofgranularsludgeinreactors2,60d,,。R2,,。384d。3 Fig.3 Morphologyofgranularsludgeformedunderdifferentsalinity3,1%R1,,;2.5%R2,,,,;R3,·20·第24卷 第11期              中国给水排水            。,,/[11、12]。,,。,5%,90,()。,。2.2 (68~98d)1。1 Tab.1 Effectofsalinityoneffluentquality SS/(mg·L-1)NH+4-N/(mg·L-1)pHR142.115.76.2R245.017.06.6R385.528.37.6  1,SS、pH。,,SS;,。,pH。2.3 、4。4 Fig.4 Settlingvelocityofgranularsludgeinreactors4,R1R2,R3R1R2。NaCl,,,,,1SS;,,Na+,。R2,。2。,。2 Tab.2 Structuralparametersofgranularsludgeinreactors/mm/(m·h-1)/(g·mL-1)/%R10.53~0.5712.00~14.381.05±0.0290~98R20.46~0.5410.40~13.651.06±0.0389~97R30.51~0.5715.40~26.281.08±0.0182~93  [13],30~70m/h,,。2,1.03~1.09g/mL,(1.002~1.006g/mL),。3 结论① ,,;,。,,。② ,,。:[1] ,,,.[J].,1999,20(3):104-106.[2] ,,,.[J].,2007,23(15):17-20.[3] ,.·21·王立东,等:含盐量对好氧颗粒污泥结构及处理效能的影响第24卷 第11期[J].,2007,23(1):30-33.[4] ,,,.[J].,2005,21(2):18-22.[5] .[J].,2007,28(6):1245-1251.[6] ,,,.[J].,2006,26(6):732-736.[7] ,,,.[J].,2007,23(17):32-36.[8] ,,.[J].,2006,26(1):13-16.[9] ,,,.[J].,2006,22(8):1-4.[10] MajumderAK,BarnwalJP.Acomputationalmethodtopredictparticlesfreeterminalsettlingvelocity[J].IE(I)Journal,2004,85:17-19.[11] ErguderTH,DemirerGN.Investigationofgranulationofamixtureofsuspendedanaerobicandaerobicculturesunderalternatinganaerobic/microaerobic/aerobiccondi-tions[J].ProcessBiochem,2005,40(12):3732-3741.[12] .[J].,2002,18(2):26-28.[13] ,.[J].,1999,20(2):38-41.:(1982- ), , , , 。:15902942346E-mail:lizhihua@gmail.com::2007-12-25(上接第18页)4 结论① ,,,A/O,,、、、、。② 10∶1,BAFDO3.1~4.4mg/L,。,6~7d。③ ,COD、NH3-N、TN、TPSS94.2%、85.3%、63.6%、33.1%91.4%。:[1] ,.[M].:,2004.[2] .(4)[M].:,2002.[3] .[J].,2002,21(6):564-570.[4] ,.A2/O()[J].,2003,29(3):26-29.[5] JettenMSM,MichaelWagner,JohnF,etal.Microbiolo-gyandapplicationoftheanaerobicammoniumoxidation(anammox)process[J].CurrOpinBiotech,2001,21:283-288.[6] ,.[J].,2007,21(3):6-11.:(1965- ), , , , 。:(0555)2763188:(0555)2763127E-mail:zhengjun6642@163.com:2008-01-08·22·第24卷 第11期              中国给水排水            

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