不同碳源对餐厨废水短程硝化反硝化处理效果的影响研究张周

36720187EnvironmentalEngineeringVol．36No．7Jul．2018*1212121.2141222.214122TN、3C/N。3COD、NH+4－N93.2%98.2%。COD。2TN。COD、TNNH+4－N。3＞＞。C/NDOI10.13205/j．hjgc．201807010EFFECTOFDIFFEＲENTCAＲBONSOUＲCESONSHOＲT-CUTNITＲIFICATIONANDDENITＲIFICATIONTＲEATMENTEFFICIENCYFOＲFOODWASTEWATEＲZHANGZhou12ZHAOMing-xing12ＲUANWen-quan121.SchoolofEnvironmentalandCivilEngineeringJiangnanUniversityWuxi214122China2.JiangsuKeyLaboratoryofAnaerobicBiotechnologyWuxi214122ChinaAbstractTheshort-cutnitrificationanddenitrificationtreatmentprocessforfoodwastewaterhadproblemsincludinginsufficientcarbonsourceandlowTNremovalrate．TheenhancingeffectofthreekindsofcarbonsourcesincludingmethanolandbiodieselworkshopproductionwastewaterandfoodwastewateronthetreatmentefficiencyoffoodwastewaterwereevaluatednamelytoexploretheefficientdenitrificationmodeforlowC/Nfoodwastewater．ComparativeexperimentalresultsshowedthattheadditionofthreekindsofcarbonsourceshadlittleeffectontheeffluentCODandNH+4－Nconcentrationandtheiraverageremovalrateswere93.2%and98.2%．ByreducingthehydrolysistimeofthefoodwastewaterthesystemeffluentCODincreasedanditsremovalratedecreased．InadditiontomethanoltheadditionoftwoothercarbonsourceswouldleadtoincreaseofeffluentTNconcentrationwhichhadcertaineffectonthesystem．Differentcarbonsourceshadthesameeffectontheotherunitsofthesystem．TheconcentrationsofCODTNandNH+4－Nalldecreasedsignificantlyafterthewastewaterpassedtheanoxiczoneandtheeffluentmetthedischangestandard．Methanolwasprovedtohavethebestnitrogenremovaleffectamongthethreecarbonsourcesfollowedbybiodieselproductionwastewaterandfoodwastewater．KeywordscarbonsourcesfoodwastewaterlowC/Nshort-cutnitrification*2012BAC18B01-2BK20130126。2017－09－220、1-2。、、3-7。NO－2－NNO－2－N8-107。。。ρBOD5/ρN3～511-13。14COD/N4～15。COD。NH+4－N、COD、SS。15。、、、16。。、3C/N。11.11。1Table1Characteristicsofthefoodwastewatermg/LpHρCODρNH+4－NpHρNO－3－NρNO－2－NρTN749～1965655～14987.70～8.2413～93＜5666～15171.21。1Fig．1Flowchartoftest。100cm、40cm、70cm50cm200L3、1∶2∶2。40L。、、。30±1℃。、TNDO0.5mg/L17-18。1.33。、。。、、、、COD。32。2Table2TypeandcharacteristicsofexternalcarbonsourcespHρCOD/mg·L－1ρTN/mg·L－1ρNH+4－N/mg·L－18.36～8.891.2×106——8.24～8.5719000～2360020～150—3.45～4.1945000～73000750～1800200～5001.4NO－2－N90%4000mg/LCOD。ρCOD4000mg/L63。1.5CODNH+4－NN-1--－19。174363Table3Experimentaloperatingconditionsmg/L/d30d15d0dI1～154000————II16～30—400020%———III31～45—500027%———IV46～60——40005%——V61～75———4000—VI76～90————4000COD。=ΔcNO－2－NΔcNO－2－N+ΔcNO－3－N×100%1ΔcNO－2－N、ΔcNO－3－N、mg/L。22.1COD15dCOD2。ρCOD4813～6190mg/L5211mg/LρCOD323～876mg/L505mg/LCOD90.22%。ⅠⅡρCOD350mg/L93%COD。Ⅲ5000mg/LCOD。ⅢⅡ1000mg/LCODCOD。IV、V、VICOD876mg/LCOD85%COD、。3CODCOD。2.2NH+4－N3NH+4－N—■——●——★—COD。2CODFig．2CODremovalefficiencywithdifferentcarbonsources。ρNH+4－N799～1324mg/L1005mg/LρNH+4－N10mg/LNH+4－N96%。NH+4－N。3ρNH+4－N900mg/LNH+4－N98%。3NH+4－N20mg/L。CODNH+4－NNH+4－N。—■——●——★—。3Fig．3NH+4－Nremovalefficiencywithdifferentcarbonsources2.3TNTN4。ρTN1039～1548mg/L1373mg/L。IIITN847TN93.25%COD。ⅡⅢⅢTNTN。。TN249mg/LTN。—■——●——★—。4TNFig．4TNremovalefficiencywithdifferentcarbonsources2.42.4.1ICOD、TN、NH+4－N5a。COD、TNNH+4－N506711381012mg/LCODTNCODNO－3－N、NO－2－NN2N2O。CODTN。COD、TNNH+4－NCOD、TNNH+4－N75819375mg/LTNNO－2－N、NH+4－N。NH+4－NNH+4－N16mg/LCOD、TNNH+4－N3478012mg/L。CODTNNH+4－N。5COD、TNFig．5EffectofCODandTNremovalwithdifferentcarbonsources2.4.220%5b。COD、TN、NH+4－NICOD、TNNH+4－N1638323278mg/L。COD、TNNH+4－N4189811mg/L。INH+4－NNH+4－NCODTNCOD9436CODTN。2.4.330d5c。CODCOD。3CODTNIIICOD、TNNH+4－N44712621mg/L91.1%、87.2%98.1%。。31、、30dCODρCOD350mg/L93.2%COD。3NH+4－NNH+4－N20mg/L98.22%。2TNCODTN。TN。3COD、TNNH+4－N、。3。1．J．200926926-29．2WiesmannU．BiologicalnitrogenremovalfromwastewaterJ．AdvancesinBiochemicalEngineeringBiotechnolog199451113-154．3．N2OJ．2017803266-272．4．D．2016．5．J．2017229-33．6．J．2017123-4．7ChenYWangYFanMetal．PreliminarystudyofshortcutnitrificationanddenitrificationusingimmobilizedofmixedactivatedsludgeanddenitrifyingsludgeJ．ProcediaEnvironmentalSciences2011111171-1176．8MatcalfEddy．M．4．．2004．9LacknerSGilbertEMVlaeminckSEetal．Full-scalepartialnitritation/anammoxexperiencesAnapplicationsurveyJ．WaterＲesearch20145510292-303．10BaiYZhangYQuanXetal．Enhancingnitrogenremovalefficiencyandreducingnitrateliquorrecirculationratiobyimprovingsimultaneousnitrificationanddenitrificationinintegratedfixed-filmactivatedsludgeIFASprocessJ．WaterScienceandTechnology2016734827-34．11．D．2009．12．J．200736213-15．13．D．2004．14．J．20031631-3．15FukushimaTWhangLMChiangTYetal．NitrifyingbacterialcommunitystructuresandtheirnitrificationperformanceundersufficientandlimitedinorganiccarbonconditionsJ．AppliedMicrobiologyandBiotechnology201397146513-6523．16．J．201136-7．17BernetNPengDCDelgenesJPetal．NitrificationatlowoxygenconcentrationinbiofilmreactorJ．JournalEnvironmentalEngineering20011273266-271．18HanakiKWaantawinCOhgakiS．Nitrificationatlowlevelsofdissolvedoxygenwithandwithoutorganicloadinginasuspended-growthreactorJ．WaterＲesearch1990243297-302．19．M．4．2002．1990－。[e-mail]05