侧向流曝气生物滤池中的生物膜特征分析张红晶

2　11环境工程学报Vol.2,No.11200811ChineseJournalofEnvironmentalEngineeringNov.2008张红晶1　龙腾锐2　何　强2　曹艳晓2(1.,400045;2.,400045)　　、。,、。,,;,;COD,NH3-N,,;,,,。　　　　　X703.1　　　A　　　1673-9108(2008)11-1451-06CharactersofbiofilminlateralflowbiologicalaeratedfilterZhangHongjing1　LongTengrui2　HeQiang2　CaoYanxiao2(1.FacultyofChemistryandChemicalEngineering,ChongqingUniversity,Chongqing400045;2.FacultyofUrbanConstructionandEnvironmentalEngineering,ChongqingUniversity,Chongqing400045)Abstract　Utilizinglateralflowbiologicalaeratedfilter(LBAF)fortreatingdomesticwastewatertostudythecharactersofspace-timedistributionofbiomass,biofilmactivityandmicroorganismspacedistributionatsteady-stateoperation.Theresultsshowthattheconformation,colorandthicknessofthebiofilmintheLBAFchangesignificantlyalongtheflowdirection.Thebiofilmfromtheinfluenttothemiddleofthereactorisverythickanditscolorislightblack,thereisalotofbiomass;thebiofilmgetsthinneranditscolorgetslightbrownalongtheflowdirection;alongtheflowdirectionoftheLBAF,theCODrateofconversiondecreasesgraduallyandtheam-moniarateofconversionincreasesgradually,whiletheoxygenconsumptionrateofthemicroorganismdecreasesfirstlyandthenincreasesslightly;thereareplentyandkindsofmicroorganismintheLBAF,andtherearedomi-nantmicroorganismgrowindifferentpositionsintheLBAFtotreatthewastewaterwell.Keywords　lateralflowbiologicalaeratedfilter;biomass;biofilmactivity;microorganismspacedistribu-tion:“”(2004BA604A-01):2008-03-26;:2008-09-11:(1967～),,。E-mail:[e-mail]　　2080,。,、。,,。,,、,。,,[1～3],,。、,。1　1.1　1,22.28m,0.70m,1.35m,(0～0.56m)、A(0.56～2.08m)、(2.08～2.78m)、B(2.78～4.66m)(4.66～4.86m)。A10～15mm,,25mm“S”,,“S”,,,“S”,,。B28cm,3～6mm,,。1.2　:COD86～596mg/L,9.02～96.31mg/L,11.12～109.79mg/L,0～0.36mg/L,SS86～221mg/L,3.1～11.8mg/L,pH6.0～7.5。1　LBAFFig.1　Sketchofconstitution1.3　《(4)》[4]。,,。、MOTIC,,[5,6]。、(MPN)[7]。,[4]。(OUR)[8]。2　2.1　COD,。,4～6d,COD。7d,COD,13d,,。14d40mg/L,COD85%,,(),。145211:2.2　0.18m3/(m2·h)3、5、8、1215d,,,2。2　Fig.2　Tempo-spatialchangesofbiomassperunitmass2,,,。A(0.86～1.98m)B(2.91～3.19m)3d8d,8d,B(3.47～4.59m)5d,,AB。,3d0.86m,5d0.86～1.42m,,8d0.86～1.98m,,15d0.86～2.91m,。LBAF。2.3　0.43m3/(m2·h)3d,COD、NH3-N,,3。3,COD,NH3-N,,。,,COD,,,,,。,,,,,。,,。3　LBAF、CODNH3-NFig.3　OUR,ammoniatransformationrateandCODtransformationratealonglengthoffilter2.4　,,,、,、[5,6],1。、MPN[7],2。1,,,,,,(4),;(5);A,,,(6),,(7);B,,(8),,,、(9)(10),,,2,145321　Table1　CharacteristicsofbiofilmmorphousandpopulationinLBAF(m)COD(mg/L)NH3-N(mg/L)0.86　230　50.53　,,,,,1.42　94　49.53　,、,　,1.98　　60　　46.78　　,,　,　,,。,3.192837.17,,　　,,、;,3.752925.55,,　　,,,,4.311915.68,,,,2　LBAF、、Table2　Numberofnitrifier,nitritebacteriaanddenitrifiervolumealongthelengthoffilter(m)(/cm3)(/cm3)(/cm3)3.191.2×1041.2×1052.7×1053.757.2×1045.3×1056.8×1044.312.5×1052.0×1061.4×104;B,,(11)、、、,(12)(13),COD,,,。B,,(14)、(15),,,。,,,,,。,,,(16)、,B,。1～2,,,。145411:14552　　、(17)。,,。3　　(1)、。,,;,。(2)COD,NH3-N,,。(3),,,。[1],,,..,1999,7(5):113～122[2],,,..,2002,8(4):438～442[3]MadonyP.,DavoliD.,ChiericiE.,etal.Comparativateanalysisoftheactivatedsludgemicrofaunainseveralsew-agetreatmentworks.Wat.Res.,1993,27:1485～1491[4].(4).:,2002[5],.(2).:,1980.428～442[6]..:,1978.101～200[7],..:,2002.60～92[8]UrferD.,HuckP.M.Measurementofbiomassactivityindrinkingwaterbiofiltersusingarespirometricmethod.Wat.Sci.Tech.,2001,35(6):1469～14771456