UniFedSBR工艺除磷脱氮机理研究赵晨红

1　9环境工程学报Vol.1,No.920079ChineseJournalofEnvironmentalEngineeringSep.2007UniFedSBR赵晨红1　彭永臻1＊　石枫华2　王淑莹1　唐旭光1(1.,100022;2.,100037)　　UniFedSBR,。/2h,41.67%,,。UniFedSBR:/,,,。　UniFedSBR　　　X703.1　　　A　　　1673-9108(2007)09-0001-05ResearchonprinciplesofnutrientremovalinUniFedSBRprocessZhaoChenhong1　PengYongzhen1　ShiFenghua2　WangShuying1　TangXuguang1(1.KeyLaboratoryofBeijingforWaterQualityScienceandWaterEnvironmentRecoveryEngineering,BeijingUniversityofTechnology,Beijing100022;2.ChinaArchitectureBuildingPress,Beijing100037)Abstract　AppropriatevolumeexchangeratiowasinvestigatedinaUniFedSBRlab-scaleapparatustrea-tingactualdomesticwastewater.Whenthefeed/decanttimewas2hoursandvolumeexchangeratiowasnothigh-erthan41.67%,goodseparationofinfluentandeffluentcouldbeachieved.TheprinciplesofnutrientremovalofUniFedprocesswerethatdenitrificationandanaerobicphosphatereleasetookplaceatthebottomofthetankdur-ingfeed/decantperiod,nitrificationandaerobicphosphateuptakeoccurredduringaerationperiod.Sosimulta-neousnitrogenandphosphorusremovalcouldbeachievedinUniFedSBRprocess.Keywords　UniFedSBRprocess;phosphorusremoval;nitrogenremoval:“”(2006BAC19B03);;-(50628808):2007-03-02;:2007-07-19:(1974～),,,,。＊,E-mail:[e-mail]　　UniFedSBR1998,。UniFedSBR,SBR,UniFedSBR/、3,:SBR,,。SBR,,、,,,,;,,,;;。[1～4],UniFedSBR,/,,,,,。,UniFedSBR,。UniFedSBR,,UniFedSBR,,,UniFedSBR1。1　1.1　UniFedSBR1。,90cm,,21cm,40L,,,,,、,,[7],××=8cm×8cm×4cm,××=12cm×12cm×5cm。,2,1,21,,DO。UniFedSBR,、、1、2。UniFedSBR/2h,1min,1.5～3h,20min,,/,CODNH+4-N,pHDO,,26±1℃,20d。1　UniFedSBRFig.1　SchematicdiagramofUniFedSBRreactorandauto-controlsystem1.2　,1,,3,3～4g/L。1.3　COD、TN、NH+4-N、NO-2-N、NO-3-N、PO3-4、、MLSSSVI,MultiN/C3000TN,WTWMulti340iDO、pH、ORP。1　Table1　InfluentcharacteristicspH7.20～7.607.40COD(mg/L)152～273.9198(mg/L)420～500460TN(mg/L)62.83～93.4677NH+4-N(mg/L)49.64～73.2960.79PO3-4(mg/L)3.14～9.315.7829:UniFedSBR2　2.1　UniFedSBR,,,,/。2h,425%、33.33%、41.67%50%,,2。4NH+4-NTN,。2　Table2　Volumeexchangeratiosandcorrespondingflowrates(%)(L/h)25533.336.6741.678.335010,,TN、NH+4-N,,COD/TN2.41～3.02,TN25%、33.33%41.67%3,41.22%～46.38%(TNCOD/TN),NH+4-N100%,NH+4-N。3,。50%10d,TN34.08%～38.29%,NH+4-N80.32%～92.59%,NH+4-N5.27mg/L。,NH+4-N,NH+4-N,NH+4-N/NH+4-N。50%,/2h,10min,NH+4-N,2。70minNH+4-N0,80min,NH+4-N4.01mg/L,120minNH+4-N30.25mg/L,/80min,。,/2h,50%,,25%、33.33%41.67%3,,。41.67%,16.7L,,41.67%,8.33L/h。2　50%/Fig.2　Variationofammoniumconcentrationofeffluentwithtimeduringfeed/decantperiodatthevolumeexchangeratioof50%2.2　UniFedSBRUniFedSBRTN,,TN,25%,,COD440mg/L,DO0.2～0.5mg/L,COD,2h。,。3TN68.56mg/L,PO3-45.27mg/L,463.23mg/LTN、NH+4-N、NO-2-N、NO-3-NPO3-4。3,/2hTN19.58mg/L,PO3-47.18mg/L,343.43mg/L,TN12.95mg/L,PO3-40,268.89mg/L。,,/TN(68.56×25%+12.95×75%)-19.58=7.27mg/L,343.43-(463.23×25%+268.89×75%)=25.95mg/L。NO-3+5H(———)※1/2N2+H2O+OH-,,1mg/L3.57mg/L,313　UniFedSBRTN、NH+4-N、NO-x-N、PO3-4(C/N=6.42)Fig.3　ConcentrationprofilesofTN,NH+4-N,NO-x-N,PO3-4duringaUniFedSBRcycle(C/N=6.42),/25.95/3.57=7.27mg/L,TN7.27mg/L(:,NO-3-N);PO3-47.18-(5.27×25%+0×75%)=5.86mg/L。/TN,,,NO-xN2。NO-x,,,。PHB,PO3-4,/PO3-4。/TN、、PO3-4,。3,2h,TN19.58mg/L12.08mg/L,TN7.5mg/L。TN,,(0.2～0.5mg/L),,CODNO-x。COD76.38mg/L(COD30mg/L)、NO-x6.09mg/L,10minNO-x4.41mg/L。NO-x-N,11.41mg/L。NH+4-N10min,,NH+4-N,,NH+4-N,1h20min,。PO3-47.18mg/L10min10.66mg/L,,1h40min,0。10min,,,PHB,,,PHB,。COD/,,,COD,,CODCOD,COD28.59mg/L。,,0.2～0.5mg/L,,,SVI75～90mL/g,。,UniFedSBR,COD440mg/L、COD/TN6.42,/2h、2h、20min、25%,NH+4-N100%,TN82.38%,PO3-4100%,COD93.50%。2.3　UniFedSBRCOD/TNTN(77mg/L),COD(198mg/L),TN,。,TN,,COD600mg/L,COD/TN7.89,COD/TNUniFedSBR,4。4TN76.02mg/L,NH+4-N58.68mg/L,COD600mg/L,PO3-45.05mg/L;49:UniFedSBRTN6.66mg/L,NH+4-N0,COD25.58mg/L,PO3-40;TN91.24%,NH+4-N100%,PO3-4100%,COD95.74%。/,TN(76.02×25%+6.66×75%)-16.82=7.18mg/L,PO3-47.4-(5.05×25%+0×75%)=6.14mg/L。,TN16.82mg/L6.66mg/L,TN10.16mg/L。PAOs,PO3-4,7.4mg/L20min14.69mg/L,,1h40min,,PO3-4。4　UniFedSBRTN、NH+4-N、NO-x-N、PO3-4(C/N=7.89)Fig.4　ConcentrationprofilesofTN,NH+4-N,NO-x-N,PO3-4duringaUniFedSBRcycle(C/N=7.89),,NH+4-N、PO3-4,NO-x-N。/,NH+4-NPO3-4,、,,,NH+4-NPO3-4,6～7mg/LNO-x-N30mg/LCOD,。NO-x-N,,。,。UniFedSBRC/N,/,,、。3　　(1)UniFedSBR,,,/2h,41.67%,。(2)UniFedSBR:/,。/。/,,,,。(3)UniFedSBR/2h、2h、20min、25%,COD/TN7.89,NH+4-NPO3-4100%,TN91.24%,COD95.74%。UniFedSBR,SBR,,。,、,。[1]KellerJ.andYuanZ.Combinedhydraulicandbiologicalmodelingandfull-scalevalidationofSBRprocess.Wat.Sci.Tech.,2002,45(6):219～228[2]KellerJ.,SubramaniamK.Nutrientremovalfromindustrialwastewaterusingsingletanksequencingbatchreactors.Wat.Sci.Tech.,1997,35(6):137～144[3]KellerJ.,WattsS.,W.Battye-Smith,etal.Full-scaledemonstrationofbiologicalnutrientremovalinasingletankSBRprocess.Wat.Sci.Tech.,2001,43(3):355～362[4],.-、、.:,2004[5],.UniFedSBR.,2006,22(12):14～17[6]PulgS.,VivesM.T.WastewaternitrogenremovalinSBRs,applyingastep-feedstrategy:fromlab-scaletopi-lot-plantoperation.Wat.Sci.Tech.,2004,50(10):89～96[7],,.UniFedSBR.,2007,23(3):14～185