粉煤灰加气混凝土颗粒曝气生物滤池处理污水试验研究

27Vol.2,No.720087ChineseJournalofEnvironmentalEngineeringJul.20083(,,730000),,,;2,30.72m3/(m2d)8.0410.08kgCOD/(m3d),CODNH32N7412%92%,CODNH32N60mg/L1mg/L,GB1891822002A,CODNH32NX70311A167329108(2008)0720911205Experimentsonbiologicalaeratedfilteroffly2ashaeratedconcreteparticlesinwastewatertreatmentWangHouchengZengZhengzhongNanZhongren(NationalLaboratoryofWestChinasEnvironmentalSystem,CollegeofEarthandEnvironmentalScience,LanzhouUniversity,Lanzhou730000)AbstractInthisexperimentresidentialwasterwaterwastreatedusingthefly2ashaeratedconcreteparticlesBAFdisposalatdifferentgastoliquidratiosandhydraulicloadings.Theresultsshowthatnitrifierwaseasytogrowonthefaceoffly2ashaeratedconcreteparticles,andbestgastoliquidratiosandhydraulicloadingswere21and30.72m3/(m2d),respectively,accordingtothetreatmentefficiencyandeconomicaloperation.WhentheCODloadwaskeptbetween8.04and10.08kgCOD/(m3d),theaverageremovalratesofCODandNH32Nreached74.2%and92%,respectively,andtheaverageeffuentconcentrationsofCODandNH32Nofwastewaterwas60mg/Land1mg/L,whichmeasureduptheAstandardsinthefirstclassofGB1891822002.Thestudysuggestedthatthebiologicalaeratedfiltercanbeusedtotreatwastewater.Keywordsbiologicalaeratedfilter;fly2ashaeratedconcreteparticles;packingmaterials;CODremovalrate;NH32Nremovalrate:(40671167):2007-11-15;:2008-01-24:(1980),,,E2mail:[e-mail]3,E2mail:[e-mail]208090,[1],,,,,,2.52.7g/cm31.42.2g/cm32.02.3g/cm3[2,3],[4],,,(1.31.5g/cm3),2,,11.11,18cm,150cm,,,30cm,4,4,,11Fig.1Schematicdiagramofexperimentalset2up1Table1Maindesignparametersforbiologicalaeratedfilter(mm)(L)200100030015005.125.47.638.11.2,,232Table2CharacteristicsofBAFinfluentCOD(mg/L)NH32N(mg/L)SS(mg/L)pH1442961235.640686.47.68000100003001000200300-3Table3CharacteristicsofBAFmedia(m2/g)(g/cm3)(g/cm3)(%)(mm)9.010.01.31.50.5404101.3:CODNH32NSSpH:COD;NH32N;SS;;pHHANNAPH22.1[5],1526,,48h,2,(3.84m3/(m2d),2),,2,CODNH32N50%45%,[6]2.22.2.1,(COD136280mg/L),7.68m3/(m2d),2,3d,COD47%87%2.2.2,1723:(1):15.36m3/(m2d),1/41/21248,3d,COD2197:(2):,3.847.6815.3630.7261.44m3/(m2d),3d,2.2.3,,2.2.4,,,,5d32L/h160L/h,10min,,5min,32L/h10min,33.1CODNH32N[79],15.36m3/(m2d),CODNH32N2CODNH32N,,COD,1/41/228.3,1/2COD,1/2NH32N818,1/4,,[10],,[11],,,,,NH32N(1/2)COD(2),,,,,,,NH32N24,COD74.7%75.3%,,24,NH32N1/2296.5%97.3%,,1/22,,2,2CODNH32NFig.2CODandNH32Nremovalratesatdifferentgas2to2liquidratios3.2CODNH32N,2,CODNH32N3318430.72m3/(m2d),CODNH32N74.8%75.3%91.1%94.8%,,(),,,,COD(15.36m3/m2d)NH32N(15.36m3/m2d)30.72m3/(m2d),COD,27.4,NH32N5.4,CODCOD,3192NH32N,,CODNH32N,318430.72m3/(m2d),15.36m3/(m2d),CODNH32N,30.72m3/(m2d)3CODNH32NFig13CODandNH32Nremovalratesatdifferenthydraulicloadings3.3CODNH32NCOD23.8430.72m3/(m2d)2,15.36m3/(m2d),2,COD,COD,COD160312mg/L,4.037.84kgCOD/(m3d),CODCODNH32N4,COD,NH32N,,,,,CODNH32N,[12],,,,4NH32N,,,NH32N,NH32N,COD,70mg/L,514718kgCOD/(m3d)4CODCODNH32NFig.4InfluenceofinfluentCODonCODandNH32Nremovalrates3.4CODNH32N,,CODNH32N[13]2,15.36m3/(m2d)-CODNH32N5010cm,CODNH32N1040cm,COD,010cm,SS,SS010cmCOD1040cmCOD,NH32NCOD,,,,,;,5CODNH32NFig.5RelationshipbetweenthicknessofmedialayerandCOD,NH32Nremovalrates4197:,,,NH32N[14],40100cmNH32NCOD3.56710cm;67,,,,NH32N4(1)COD1/2,COD;30.72m3/(m2d),CODNH32N,NH32N(2)2,3.8430.72m3/(m2d),,2,30.72m3/(m2d)(3)5147184kgCOD/(m3d),810410108kgCOD/(m3d)230172m3/(m2d),COD74.2%,60mg/L,NH32N1.0mg/L,GB1891822002A(4),[1],,..:,2002.2627[2],..:,1987.29[3]..:,1992.213219,11181129[4],,,..,2006,24(1):913[5],..,1992,8(3):1317[6],.,..,2001,29(10):12401245[7],,..,1998,3(19):4346[8],,,..,2006,7(9):8893[9],,.1,2006,22(9):7477[10]DilekF.B.,AndersonG.K.Investigationintothemi2crobiologyofahighratejet2loopactivatedsludgereactortreatingbrewerywastewater.Wat1Sci1Tech.,1996,34(56):107112[11],,,..,2002,23(1):5861[12]..,2003.1920[13]Fdz2PolancoF.Spatialdistributionofheterotrophsandni2trifiersinasubmergedbiofilterfornitrification.WaterRes.,2000,34(16):40814089[14],,..,1996,17(1):1517519