低CN比水产养殖废水生物脱氮实验研究宋宏宾

4　5环境工程学报Vol.4,No.520105ChineseJournalofEnvironmentalEngineeringMay2010C/N宋宏宾1,2　蒋进元2＊　周岳溪2　崔俊涛1(1.,130018;2.,100012)　　-,C/N,。,-,。,pH7.5～8.5,28～32℃,0.5～1mg/L,5～10mg/L,COD、NH+4-NTN94.4%、91.6%70.1%;C/NNH+4-N,NO-2-N5.2mg/L,。-,C/N,NO-2-N,。　C/N　　　X714　　　A　　　1673-9108(2010)05-0998-05ExperimentalstudyonbiologicalnitrogenremovalprocessoflowC/NaquacultureSongHongbin1,2　JiangJinyuan2　ZhouYuexi2　CuiJuntao1(1.CollegeofResourcesandEnvironment,JilinAgriculturalUniversity,Changchun130018,China;2.ResearchCenterofWaterPollutionControlTechnology,ChineseResearchAcademyofEnvironmentalSciences,Beijing100012,China)Abstract　Anewtypeshort-cutnitrificationdenitrificationbiofilterwithmulti-stagebiofilmtreatmentsys-temwasdesigned,anditsefficiencyofbio-denitrificationwasresearchedunderlaboratoryconditions.TheresultsshowedthatwhenthepHwas7.5～8.5,thetemperatureofwaterwasat28～32℃,dissolvedoxygenwas0.5～1mg/Landammoniawas5～10mg/Linartificialaquaculturewastewater,COD,nitriteandtotalnitrogenav-erageremovalrateswere94.4%,91.6%and70.1%,respectively.ThatinfluenceontheeffluentremovalrateofNH+4-NwithlowC/Nratiowaslittle,andtheconcentrationofnitritewaslimitedtolessthan5.2mg/Linar-tificialaquaculturewastewater,thatwasbelowthetolerancelevelsoffish.Theresultsindicatethatremovingni-tritefromaquaculturewastewaterwiththeshort-cutnitrificationdenitrificationmulti-stagebiofilmbiofilterisafeasibleapproach,andthewaterqualityissuitabletorecyclingintotheaquaculturesystem.Keywords　lowC/Nratio;aquaculture;biologicalnitrogenremoval:“863”(2008AA10Z406);(2007KYYW46):2010-01-30;:2010-03-03:(1982～),,,。E-mail:[e-mail]＊,E-mail:[e-mail]　　,,[1]。、、BOD、COD,,[2],COD200mg/L,。C/N[3～5],C/N。,C/N2.86kgCOD/kgN,,4kgCOD/kgN,,COD/TN5,[6,7]。Ku-ba[8]C/N3.4,。20805:C/N,(),,,。,,。。C/N,,,:,;,;,;,,;,;,。,C/N?,;、,[9]。,:40%,;,;HRT,;。C/N。1997,Delft-SHARON(singlereactorhighactivityam-moniaremovalovernitrite)。SHARON[10]。[11],。[12],。,,,。,C/N,[13～16]pH、、、,,,。1　1.1　C/N1。、,120、48.6014.13L,,3。、,3,。,,。,,。、pH,PLC(programmablelogiccontroller)。,,,[17]。1　C/NFig.1　Schematicdiagramofpilotplantinmulti-stagebiofilmtreatmentonlowC/Nratiosofcirculatingaquaculture1.2　,2;、3～5,、、、、。,,,,,。18mm×18mm,,20%。2　Fig.2　Actualfigure1.3　C/N:、8h,pH7.5～8.5,28～32℃,0.5～1mg/L,5～999410mg/L。。1.4　,,、、,NaHCO3,pH,12gNaHCO3/gNH+4-N。:COD100～120mg/L,NH+4-N50～60mg/L,PO3-4-P10mg/L。Ca、Fe、ZnCu[12]。1.5　、pH,COD、TN、NH+4-N、NO-3-N、NO-2-NPO3-4-P:COD,CTL-12();(NH+4-N),();(TN),TOC-VCPH(),(NO-3-N)、(NO-2-N)、(PO3-4-P)()。2　2.1　。,0.5h,,,,,,,。,。20d,COD90%,NH+4-N95%。,[18]。2.2　,COD6,6,,COD,2～3d10mg/L,。COD101.70mg/L,,。COD,23dCOD95%,COD。,5mg/L,。COD,COD,,。,COD1#,,。41d,,50%,5d,,。。10005:C/N6　CODFig.6　ProfileofCODconcentrationsininfluentandeffluent2.3　2.3.1　NH+4-N的变化情况NH+4-N7,7,NH+4-N,2～3d10mg/L,,,20d,90%,。,C/NNH+4-N,[19,20],COD,,NH+4-NNO-3-NNO-2-N,。,,NH+4-NNH4+-N,NH+4-NNH+4-N。NH+4-N60mg/L,,[21]。7　NH+4-NFig.7　Profileofammonianitrogenconcentrationsininfluentandeffluent2.3.2　TN的变化情况,TN8。,TN15%～30%,60d,50%,,60%～75%,,(COD),,TN70%,[22]。,,,,TN64.12mg/L,COD101.70mg/L,COD/TN1.59,Kuba[8]C/N3.4。,TN,,C/N。。8　TNFig.8　ProfileofTNconcentrationsininfluentandeffluent2.3.3　NO-2-N和NO-3-N的变化情况,NO-2-NNO-3-N9,9,NO-2-N10mg/L,NO-2-N[23]。NO-2-NNO-3-N,NO-2-N,NH+4-NNO-2-NNO-3-N,。,NO-3-N,NO-2-N10mg/L(NO-3-N),NO-2-N,NO-2-NNO-3-N,TN,NH+4-NNO-2-N,NO-2-NN2。3　　(1)pH7.5～8.5,100149　NO-2-NNO-3-NFig.9　Profileofnitriteandnitrateconcentrationsineffluent28～32℃,0.5～1mg/L,5～10mg/L,,,C/N,。(2)COD、NH+4-NTN94.4%、91.6%70.1%,C/NNH+4-N,,NO-2-N5.2mg/L,。[1],,,..,2005,18(5):67～71[2]RasmussenR.A.,KhalilM.A.K.Atmosphericmethaneintherecentandancientatmospheres:Concentrations,trendsandinterhemisphericgradient.J.Geophys.Res.,1984,89(1):11599～11605[3],,,.C/N.,2003,25(5):257～258[4],,,..,2009,37(27):13216～13220[5],,,.C/N.,2009,32(7):6～13[6]HenzeM.Capabilitiesofbiologicalnitrogenremovalprocessesfromwastewater.WaterSci.Technol.,1991,23(4～6):669～679[7],,,.A2OC/N.,2008,59(12):3126～3131[8]KubaT.,vanLoosdrechtM.C.M.,HeijnenJ.J.Phos-phorusandnitrogenremovalwithminimalCODrequirementbyintegrationofdenitrifyingdephosphatationandnitrifica-tioninatwo-sludgesystem.WaterResearch,1996,30(7):1702～1710[9],.C/N.,2009,29(2):225～230[10]KEMPENvanR.,MULDERJ.W.,UIJTERLLNDEC.A.,etal.Overview:FullscaleexperienceoftheSHAR-ONprocessfortreatmentofrejectionwaterofdigestedsludgedewatering.WaterSci.Technol.,2001,44(1):145～152[11],,,..,2008,40(10):1552～1556[12].-.:,2004[13]vanBenthumWAJ.Nitrogenremovalusingnitrifyingbio-filmgrowthanddenitrifyingsuspendedgrowthinabiofilmairliftsuspensionreactorcoupledwithachemostat.WaterRes.,1998,32(7):2009～2018[14]RalfStuven.Theimpactoforganicmatteronnitricoxideformationbynitrosomonaseuropaea.Arch.Microbiol.,1992,158(1):439～443[15],,,..,2006,19(1):26～29[16],,,..,2003,9(1):40～45[17]PENGY.Z.,CHENT.,TIANW.J.NitrogenremovalvianitriteatnormaltemperatureinA/Oprocess.JournalofEnvironmentalScienceandHealthpartA—Toxic/Haz-ardousSubstancesandEnvironmentalEngineering,2003,39(7):1667～1680[18],.(2).:,2000.49～60[19]MichaudL.,BlanchetonJ.P.,BruniV.Effectofpartic-ulateorganiccarbononheterotrophicbacterialp