A2OMBBR反硝化除磷工艺中有机物的迁移转化及利用张淼

2017,37(11)4132~4139ChinaEnvironmentalScienceA2/OMBBR1,2,2,1*,3,1(1.,2251272.,2250023.,,100124)//(A2/OMBBR),(C/N),.:C/N3.11~6.09,COD,83.85%;VFAPHAs,C/N5.42.,,C/N5.42,A2/OCOD70.10%,MBBRCOD4.32%~5.89%,C/N.,COD,,.A2/OMBBRX703.1A10006923(2017)11413208MigrationandtransformationandutilizationoforganicmatterinA2/O-MBBRdenitrifyingphosphorusremovalprocess.ZHANGMiao1,ZHANGYing2,HUANGPeng-lan2,HECheng-da1*,PENGYong-zhen3,WUJun1(1.CollegeofEnvironmentalScienceandEngineering,YangzhouUniversity,Yangzhou225127,China2.YangzhouJieyuanDrainageCompanyLimited,Yangzhou225002,China3.NationalEngineeringLaboratoryforAdvancedMunicipalWastewaterTreatmentandReuseTechnology,EngineeringResearchCenterofBeijing,BeijingUniversityofTechnology,Beijing100124,China).ChinaEnvironmentalScience,2017,37(11)4132~4139AbstractAtwo-sludgesystemcombinedanaerobic/anoxic/oxicwithmovingbedbiofilmreactor(A2/O-MBBR)wasusedtotreatrealdomesticwastewater.Byaddingsodiumacetatetoadjustinfluentcarbon/nitrogenratio(C/N),thetransformationandutilizationandmetabolicpathwaysoforganicmatterinthesystemwereinvestigated.WhentheinfluentC/Nratiovariedfrom3.11to6.09,thesystemallachievedefficientCODremovalwiththemaximumremovalof83.85%.However,fromtheperspectiveofVFAandPHAstransformation,theinfluentC/Nratioshouldnotexceed5.42.Additionally,thematerialbalanceanalysisofcarbonalsorevealedthatwhentheinfluentC/Nratiowasbelow5.42,CODremovalpercentageintheA2/Oreactorwasupto70.10%andthatintheMBBRreactoronlyaccountedfor4.32%~5.89%,wheretheefficientutilizationofcarbonsourcewasthekeytoimprovemicrobialcommunityoptimizationandenhancedenitrificationandphosphorusremovalsundertheconditionoflowC/Nratio.Theresultsofdissolvedcarbonsourcecomponentdistributionandthree-dimensionalfluorescencepropertiesmanifestedthatproteinsandpolysaccharidestransformedalthoughCODchangedgentlyalongthereactor,inwhichproteins-likesubstancewasthedominant.KeywordsA2/O-MBBRprocessmigrationandtransformationmetabolicpathwaydissolvedorganicmatterthree-dimensionalfluorescencespectrum,,,(TOC)(VFA)(DOM)(PHAs)(Gly)[1].,[2],DOM,20170508(BK20170506);(204032264);(137011060)*,,[e-mail]11A2/OMBBR4133,[3],.[4],,.,,[5].,.Cao[6],(C/N)574%;UCT,C/N3.5~5.0(626)%[7];A2NSBR,90%[8].,.,A2/OMBBR[9],,C/N(DPAOs),.,[10][11][12][13].NH4+TNPO43P,.A2/OMBBR,,C/N,,,.11.11,A2/OMBBRA2/OMBBR.A2/O,,.,MBBR,A2/O(100%).MBBR3,,A2/O(300%),.1A2/OMBBRFig.1SchematicdiagramoftheA2/OMBBRprocessA2/O28L,8,3.5L/h,(An)(A1~A6)413437(O)1:6:1;,,SRT10d.SRT,A2/O.,,10L,.MBBR3(N1~N3),10.5L,(D×H5mm×3mm,50%),DO=3.0~4.0mg/L,0.15m3/h,,.(BT100)PLC.1.2,C/N3.11(1Run1),C/N.CODTN,C/N,3.11~6.09(Run1~Run5).,3SRT,200d,,18~20.CASS,20d.1Table1Characteristicsofinfluentwastewaterandoperationcondition(d)C/NCOD(mg/L)TN(mg/L)NH4+N(mg/L)NO3N(mg/L)PO43P(mg/L)C/PpHRun11~353.1117556.2053.510.143.9344.536.8Run236~804.1023256.6355.400.204.3153.837.1Run381~1305.4228051.6951.560.244.5159.876.9Run4131~1756.0932252.8550.620.125.0863.397.3Run5176~2003.5519855.7153.150.094.9240.247.01.30.45μm,COD(SUNTEXTR1100),NH4+NNO3NNO2NPO43P[14];MLSSVSS[14];TNTOCTN/TOC(TOCVCSN),VFA(GC14B),PHAs(Agilent7890N)DB1[15];[16],,DNANanoDrop1000;(F7000)(TOC10mg/L),5nm200nm400nm,0.5nm200nm600nm,1200nm/min,Origin8.5.1.4(Minf,mg/d)[17]:A2/O(MAn,mg/d),(MAO,mg/d),MBBR(MMBBR,mg/d),(MWS,mg/d)(Meff,mg/d).(Run1~Run5),A2/OMBBR(COD),:Minf=Cinf·Qinf(1)MAn=[Cinf+r·CRS(1+r)·CAn]·Qinf(2)MAO=[(1+r)·CAn+R·Ceff(1+r+R)·CO]·Qinf(3)MMBBR=(1+R)·(CRSCeff)·Qinf(4)MWS=XWS·fCV·f·QWS(5)Meff=Ceff·Qinf(6):Qinf,QWS,L/d;CinfCRSCAnCOCeffCODCODCOD11A2/OMBBR4135CODCOD,mg/L;r,100%;R,300%;XWS,mg/L;fVSS/MLSS,0.6~0.8;fCVCOD,1.48mgCOD/mgVSS[18].22.12,C/N3.116.09,COD,53.79,66.81,84.55,118.60mg/L,C/N,(1.0h).[19]//(An/A/OSBR)1.5h,PHAs.020406080100120140160180200050100150200250300350400(d)AC/N=3.55C/N=6.09C/N=5.42C/N=4.10C/N=3.11COD(mg/L)5060708090100(%)2C/NCODFig.2CODvariationsalongthesystemunderdifferentC/NratiosC/N5.426.09,MBBR,18.61,34.45mg/L22.31,30.33mg/LCOD.2COD83.85%83.26%,,,DPAOsDPAOs[20].COD,,[21].,Wachtmeister[22],DPAOs(PAOs)37.13%(Run3)25.10%(Run4).C/N3.55,,5COD81.91%~83.85%,C/N3.11~6.09,COD.,,.020406080100120140160180200050100150200250300350400(d)PHA(mgCOD/L)VFA(mgCOD/L)050100150200250C/N=5.42C/N=3.55C/N=6.09C/N=4.10C/N=3.113C/NVFAPHAsFig.3ConversionandutilizationofVFAandPHAsunderdifferentC/NratiosPHAsPHAs,DPAOsVFAPHAs[23],32,C/N3.116.09,VFA,VFA73.56%,77.28%,78.72%73.44%,C/N4.105.42,VFA;C/N6.09,VFA,VFA26.08mgCOD/L,.,PHAs,VFA,PHAs120.7mgCOD/L(C/N=3.11)254.64mgCOD/L(C/N=5.42),240.69mgCOD/L(C/N=6.09),,PHAs5.48%.,5,413637PHAs68.07%79.78%84.44%80.64%74.24%.,CODVFAPHAs,A2/OHRT8h,1:6:1,100%,300%,C/N5.42.,Chen[24]C/NA2/OBAF,C/N5.5;Wang[8]A2NSBR,C/NC/P5.830.8.,A2/OMBBRC/N,COD,HRTVSS(DPAOs);PHAs,HRT().2.2,(1)~(6)(2),.,C/NCOD97.06%~99.92%(100%),UCT(67%~89.7%)MUCT(60.7%~87.6%)[25],.2Table2MaterialbalanceanalysisofcarbonMinf(mg/d)MAn(mg/d)MAO(mg/d)MMBBR(mg/d)MWS(mg/d)Meff(mg/d)R*(%)C/N=3.11168008758.561600.51808.322648.022491.0197.06C/N=4.102227212522.562396.001168.642486.403360.0098.48C/N=5.422688013764.604587.841524.963140.723840.0099.92C/N=6.093091213545.60506