UASB双循环设计及其在煤化工废水处理中的应用罗瑞春

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INDUSTRIALWATER&WASTEWATERVol.47No.5Oct.,20161,2,2(1.,710065;2.,710018),,、、、、。,,[1]。,———,。UASB。UASBLet-tinga[2]1978。,UASB,UASB、[3]。,CODCr:UASB、、。UASB,,,,。UASB,CODCr8000mg/L,400%,300%,100%,0.8m/s,0.37m3/(m2·h),UASB,,CODCr1300mg/L,80%,。:UASB;;;:X703.1:A:%1009-2455(2016)05-0036-04UASBdoublecirculationdesignanditsapplicationforcoal-chemicalwastewatertreatmentLUORui-chun1,YUYong-sheng2,LIKai-jun2(1.PotenEnvironmentGroupCo.,Ltd.,Xi′an710065,China;2.ChinaNewEraInternationalEngieeringCorporation,Xi′an710018,China)Abstract:Thestructure,technologicalprinciple,technicalinnovationpointsandengineeringapplicationofUASBdoublecirculationwereintroduced.TheUASBdoublecirculationdesigncouldeffectivelysolvethecon-tradictionbetweentheascendingvelocityandtheprecipitationareasedimentation,whichnotonlyensurerationalascendingvelocity,fullcontactbetweenwastewaterandsludge,butalsoguaranteethesludgeisnotlost,maintainthesludgeconcentrationofthereactoratthesametime.TheuniqueUASBdoublecirculationreactorwasappliedtotheengineeringpractice,whenthemassconcentrationofCODCrintheinfluentwaterwasabout8000mg/L,thetotalcirculationratiowas400%(300%internalcirculaiton,100%externalcirculation),theascendingve-locitywascontroledat0.8m/s,thesurfaceloadoftheprecipitationareawas0.37m3/(m2·h),theUASBransteadily,andhadstrongantishockloadingcapability,themassconcentrationofCODCrintheeffluentwaterwasstableatabout1300mg/L,theremovalratewasabove80%,whichgreatlyreducedthepressureofsubsequentaerobicbiochemicaltreatmentunit.Keywords:UASB;doublecirculation;coal-chemicalwastewater;engineeringapplicationUASB!!!!!!!!!!!!!!!!!!·36·,、;,,。,、,,。UASB,,UASB,UASB。,、,UASBCODCr、、,。11.1(1)[4]:①;②。UASB,,。(2)UASB。UASBCODCr,,[5-6]。,,,,,;,,,,[5]。,UASB,,,UASB[7-8],UASB。1.2UASBCODCr12000~20000mg/L,,UASB,CODCr,,、,UASB,,,。:①;②[5]。①,,,;②,,。1.3,,,、,,。,,。Q=Q+Q(1)Q=v·A-Q(2)Q=q·A-Q(3):v———,m/h;A———,m2;q———,m3/(m2·h);Q———,m3/h;Q———,m3/h;Q———,m3/h;Q———,m3/h。UASB1。2UASB,。2.1UASB,,:UASB·37·INDUSTRIALWATER&WASTEWATERVol.47No.5Oct.,2016,。174m3/h,、1。2.2100mg/L,,UASB,30mg/LUASB。2。2.3UASB4,3。,400%,300%,100%,0.8m/s,0.37m3/(m2·h),CODCr7.3kg/(m3·d)。2.4,201631580%。20163152016425,,UASB,3~6。1UASBFig.1StructureofUASBdoublecirculationreactor/%ρ(BOD5)/(mg·L-1)12000240080/℃ρ(CODCr)/(mg·L-1)4019000303800801UASB、Tab.1MaindesigninfluentandeffluentwaterqualityofUASBdoublecirculationreactorUASB2Fig.2Wastewatertreatmentflow3UASB、CODCrFig.3CODCrconcentrationsininfluentandeffluentwaterofUASBdoublecirculationreactor51015202530354045/dρ(CODCr)/(mg·L-1)10000800060004000200004CODCrCODCrFig.4RemovalrateandvolumeloadingofCODCr051015202530354045/d/(kg·mg-1·L-1)4.03.53.02.52.0100806040200/%6m(VFA)/m(ALK)Fig.6Variationofm(VFA)/m(ALK)valueofeffluentwater51015202530354045/dm(VFA)∶m(ALK)0.50.40.30.20.1051015202530354045/dρ(VFA)/(mg·L-1)12009006003000100806040200/%VFACODCr5VFACODCrFig.5VariationofVFAvalueandCODCrremovalrateofeffluentwater·38·34,126CODCr7500~8500mg/L,26~42,CODCr,,9800mg/L6400mg/L,CODCr1300mg/L,CODCr83%。34CODCr71%,29~33CODCr9300mg/L,,2d85%。CODCr,。56,CODCr,VFA,m(VFA)/m(ALK)0.5,0.3,,VFA。A、B、C、D4UASB,2,0.5m,1.0m。210d1,2。2,UASB11g/L,20g/L,,,,,。3(1)UASB,,,,,。(2)UASB,,CODCr80%,,。:[1].UASB-A/O[J].,2013,44(5):28-30.[2].[M].:,1998:9-15.[3]ARCANDY,GNIODSR,DESROCHRSM,etal.InpactoftheReactorhydrodynamicsandorganicsonthesizeandactivityofanaerobicgranules[J].ChemicalEngJour,1994,56(1):23-35.[4],,.:[M].:,2000:622-623.[5],,,.UASB[J].,2003,23(4):72-75.[6]ALPHENAARA.AnaerobicGranularsludge:CharacterizationandFactorsAffectingitsFunctioning[D].TheNetherlands:WAU,1994.[7],.UASB[J].,2004,34(2):261-269.[8],.UASB[J].,2004,22(2):17-19.ρ(MLSS)/(g·L-1)11020304010.99211.90611.80810.98711.00820.02520.82119.02921.02819.98210.8089.99411.23211.13811.20523.36823.80021.90323.00823.27511.10010.24510.85911.00910.85919.96420.96321.87419.96421.05611.34512.05211.34710.74812.08420.32820.82821.32819.92620.876ABCD2UASBTab.2SludgeconcentrationofeachUASBgroup:(1983-),,,,,、,()358865230@qq.com。:2016-07-08(),,:UASB·39·

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