pH值和碳氮比对亚硝酸型反硝化影响的研究杨莎莎

1　12环境工程学报Vol.1,No.12200712ChineseJournalofEnvironmentalEngineeringDec.2007pH杨莎莎1　宋英豪2,3＊　赵宗升1　贾立敏2(1.,100044;2.,100037;3.,100083)　　,,pH。,pH7.7～8.6,pH8.2;(C/N)1.94,,C/N,3.11,,C/NKs9.36。　　pH　　　X703　　　A　　　1673-9108(2007)12-0015-05StudyoninfluencesofpHvaluesandC/NratioondenitrificationvianitriteYangShasha1　SongYinghao2,3　ZhaoZongsheng1　JiaLimin2(1.DepartmentofMunicipalEnvironmentalEngineering,BeijingJiaotongUniversity,Beijing100044;2.BeijingMunicipalResearchInstituteofEnvironmentalProtection,Beijing100037;3.SchoolofCivilandEnvironmentalEngineering,UniversityofScienceandTechnologyBeijing,Beijing100083)Abstract　ExperimentsofconicalflaskweredonetostudyoneffectsofpHvalueandC/Nratioondenitri-ficationvianitrite.ResultsshowthatsuitablerangeofpHvalueisbetween7.7and8.6andtheoptimalpHval-ueis8.2,nitrogencanbecontinuouslyremovedwhenC/Nratioisbeyond1.94.Startingspecificsubstratedeg-radationrateriseswithC/Nratiorising,butithardlyincreaseswhenC/Nratioishigherthan3.11.SaturationconstantKsofC/Nratiois9.36bykineticanalysisonexperimentalcondition.Keywords　denitrificationvianitrite;pHvalue;C/Nratio;specificsubstratedegradationrate:(20577003);“863”(2006AA06Z320):2007-08-08;:2007-09-13:(1982～),,,:。E-mail:[e-mail]＊,E-mail:[e-mail]　　,,/、-[1]。,,,,,,,(),,。,pHC/N(CODNO-2-N),。1　1.1　2.8L,2.3L,,,,,,,,,SV32%,,,,。1,,NaNO2,KH2PO42.5mg/L、MgSO410mg/L、FeSO40.08mg/L、MnSO42.5mg/LCaCl21.6mg/L,。24h,0.25h,22.5h,1h,0.25h,2/31.5L,。1.2　。NO-2-N———N-(1-)-;COD———;pH———HANNAHI8424;MLSS———。2　2.1　120mg/L,1180mg/L,86%,53d240mg/L,81%,,pH,9.0210.30(1),10d150mL,10d。pH,pH8.2～8.6,0,100%,30d,320mg/L,480mg/L,600mg/L720mg/L,100%,0.192gNO-2-N/gMLSS·d。1pH。,pH:pH,,,,pH,pH,。pH,。1　NO-2-NpHFig.1　NO-2-NconcentrationsandpHvaluesininfluentandeffluentofsequencebatchreactor2.2　pH8300mL,200mL,NO-2-N120mg/L,C/N1.95∶1,(),1.1,MLSS0.5g/L,。8,,pH,7.2、7.7、7.9、8.2、8.4、8.69.1,,。pHNO-2-N:pH0.2,,,,8,,pH。2。2,pH,pH8.21612:pH2　pHFig.2　InfluenceofpHvalueondenitrificationratevianitrite,1.2gNO-2-N/gMLSS·d,pH8.4,0.854gNO-2-N/gMLSS·d,pH7.2,0.192gNO-2-N/gMLSS·d。,pH7.7～8.6,pH8.2,[2][3]。pH,,,FNA,pH,。pH,,,,pH(FNA),FNApH,[HNO2]=0.13mg/L[4],。HNO2,ATP,ATP。,,,[5];pH,。[6],pH7.5,pH。2.3　C/N9600mL,500mL,NO-2-N120mg/L,SBR(,),1.1,MLSS2.5g/L,pH8.2,。9,,C/N,1.48、1.79、1.94、2.18、2.33、2.72、3.11、3.894.66,,,1h,NO-2-N,0,。3～5。3　C/NNO-2-NFig.3　ChangeofNO-2-NconcentrationswithtimeunderdifferentC/Nratios4　C/NNO-2-NFig.4　ChangeofNO-2-NdegradationquotietywithtimeunderdifferentC/Nratios34,C/N1.48,,2h3h,4h,2h,,,6h74%;C/N1.79,,3h,6h93.5%,C/N,,,,,C/N1.481.79,,,171,。C/N1.94、2.18、2.33、2.72、3.11、3.894.66,1h,C/N(C/N3.894.66,C/N3.11),3hC/NC/N,4h0,100%,C/N,pH,,,,C/N。pH,1h,C/N5。5　C/NCODFig.5　StartingspecificsubstratedegradationrateandCODconsumptionunderdifferentC/Nratios5,C/N1.483.11,0.274gNO-2-N/gMLSS·d0.565gNO-2-N/gMLSS·d,,,,,,。C/N3.894.66,,C/N3.11,C/N,C/N1.943.11COD(CODCOD)240mg/L。C/N1.94(C/N:1.71,),,,COD。2.4　C/NC/N5,Monod,C/N(,)(1):v=v′maxC/NKs+C/N(1):v—(gNO-2-N/gMLSS·d);v′max—(gNO-2-N/gMLSS·d)();C/N—;Ks—C/N。,:1v=1C/N·Ksv′max+1v′max1C/N1v(6),v′max、Ks。6　NO-2-NFig.6　KineticscurveofNO-2-Ndegradation,v′max=1/0.5227=1.91(gNO-2-N/gMLSS·d),Ks=9.36。3　　(1),NO-2-N120mg/L720mg/L,,pH,NO-2-N0,pH。(2)pH,pH7.7～8.6,pH8.2。1812:pH(3),C/N,C/N1.94,C/N,,C/N3.11,C/N。(4),C/Nv=v′maxC/NKs+C/N,v′max=1.91gNO-2-N/gMLSS·d,C/NKs=9.36。[1]VanKempenR.,MulderJ.W.,UijterlindeC.A.,etal.Overview:FullscaleexperienceoftheSHARONprocessfortreatmentofrejectionwaterofdigestedsludgedewatering.WaterScienceandTechnology,2001,44(1):145～152[2],..,2006,7(3):68～71[3],,,..,2002,25(3):81～84[4]AbelingU.,SeyfriedC.Anaerobic-aerobictreatmentofhighstrengthammoniumwastewaternitrogenremovalvianitrite.WaterSci.Technol.,1992,26(5～6):1007～1100[5],,,..,2000,6(2):227～232[6].pH、.,1994,14(4):308～31319