MBBR工艺中不同曝气方式充氧效率的比较及工程应用46f09b79482fb4daa48d4b01

MBBR112231.2000512.2000923.200092、、MBBR———、、MatlabCsKLα。。MBBRACOMPARISONOFAERATIONEFFICIENCYAMONGVARIOUSAERATIONMODESFORMBBRANDITSAPPLICATIONPeiYeqing1ChenDonghui1ZhouGongming2LuQin2YangJun31.CollegeofEnvironmentalScience＆EngineeringofDonghuaUniversityShanghai200051China2.TheNationalEngineeringResearchCenterforUrbanPollutionControlofTongjiUniversityShanghai200092China3.ShanghaiBoshigaoEnvironmentalEquipment＆EngineeringCo.LtdShanghai200092ChinaAbstractAcomparisonofaerationefficiencyamongthreeaerationmodesforMBBR———evengradualandlateralaerationwasmadebysettingdifferentfeedingmodesaerationfluxesandfillingfractionsintheexperiment.ThedataoftheexperimentwasprocessedbyapplyingnonlinearregressioninMatlabwithwhichsaturateddissolvedoxygenconcentrationCsandoverallmasstransfercoefficientofoxygenKLαwerecalculated.Itwasshownthatfloatingbio-carrierscouldobviouslystrengthentheaerationefficiencywiththeprerequisitethatthecarrierskeptacertaindegreeofactivityinthewaterotherwisetheaerationefficiencywouldbeweakenedonthecontraryalthoughevenaerationisofthebestaerationefficiencyamongthethreeitdemandshigherair-volumeratiotopushcarrierstomoveactivelywhichmakesitlesseconomicalthangradualaerationandlateralaerationwhichwasconfirmedbyapplicationinafull-scaleMBBR.KeywordsMBBRfloatingbio-carriersaturateddissolvedoxygenconcentrationoverallmasstransfercoefficientofoxygenaerationefficiency1MBBRMBBR———。MBBR。、、。。1.1MBBR11-2。。520112291。1MBBR、。。MBBR。30%ρCOD11000mg/LρCl－24000mg/L1300∶1COD8kg/m3·dDO3.00mg/LMBBR65%COD。1.2。3-41。2Kolomogoroff。3。5。。22.1ACO－008LZB－10YE－100sension6。2.22.2.112。12.5L200mm。0.250.51m3/h20∶1、40∶1、80∶1。2.2.2。Na2SO37.87599%。Na2SO350%90%。Co2+、Cu2+、Fe2+、Zn2+、Mn2+Co2+、Cu2+、Fe2+40～50100%Zn2+、Mn2+10～2070%6。7。CoCl2·6H2ONa2SO3Co2+1mg/L6CoCl2·6H2O4.0375mg/L。Na2SO350%0.00mg/L。4/KLα8。900s。2.32.3.130s15min。W.G.WhitmanW.K.LewisMatlabtCCsKLα。620112291。dCdt=KLαCs－C1dCdt———mg/L·sKLα———sCs———mg/LC———tmg/L。1C=Cs－Cs－C0exp－KLα·t2C0mg/L。CsCs1%KLα1%Cs1%KLα1%9CsKLα。2CsC09ftCsC0KLα=Cs－Cs－C0exp－KLα·t33Matlab。2.3.2Cs、KLα1。11m3/h0.5m3/h0.25m3/hCs/mg·L－18.618.578.798.558.739.13KLα/s－10.00990.00730.00610.00590.00490.003719℃2。2KLα0.00990.00730.00610.00590.00490.0037s－1404.0547.9655.7678.0816.31081.1s。900s。12KLαKLα。MBBR。。。33.1140%、30%、20%、10%。212.5L50L/h。30.250.51m3/h20∶1、40∶1、80∶10.511.5m3/h10∶1、20∶1、30∶140∶1、80∶1、120∶1。4720112291。30mm25mm。。70%1。30%～40%。40%30%。3.22.3.2。2Cs、KLα。3。21m3/h0.5m3/h0.25m3/hCs/mg·L－17.657.938.388.358.107.868.798.338.82KLα/s－10.00730.00830.00590.00420.00600.00470.00380.00340.002919℃40%。343Cs、KLα。4。31.5m3/h1m3/h0.5m3/hCs/mg·L－17.847.507.517.737.387.557.517.497.64KLα/s－10.01630.01330.01090.01210.01320.01010.00900.01020.008619℃30%。123“”。、、、、。12“”KLαKLα“”、“”、“”“”KLαKLα“”“”KLαKLα。。2340%、20∶182011229140∶180∶1。3430%、120∶180∶140∶1。4、5。440%KLα1m3/h0.5m3/h0.25m3/h80∶140∶120∶1KLα530%KLα1.5m3/h1m3/h0.5m3/h120∶180∶140∶1KLα4、5“”“”。。41、、。2。3。MBBR。51.1MBBR。。30%40∶11300∶1DO3.00mg/LρCOD11000mg/LρCl－24000mg/L33h65%COD。6∶2∶2。125%DOCOD5%。1BjornRustenBjrnarEikebrokkYngveUlgenesetal.DesignandoperationsoftheKaldnesmovingbedbiofilmreactorsJ.AquaculturalEngineering200634322-331.2TorOveLeiknesHallvarddegaard.ThedevelopmentofabiofilmmembranebioreactorJ.Desalination20072021-3135-143.3.J.200414610-13.4.J.200827101544-1550.5.J.200334655-576.J.19888530-33.7.J.200319637-3[e-mail]2010－07－06920112291