反硝化生物滤池深度脱氮机理孙迎雪

66Vol．6No．620126ChineseJournalofEnvironmentalEngineeringJun．201211211．1000482．100037。14dNO－3-NTN80%～88%76%～80%COD80%。20～29℃、1．5～2m3/m2·h、COD/TN3．7～4．5NO－3-NTN70%～85%47%～64%NO－2-N。NH+4-NNO－2-N40cm。X703．1A1673-9108201206-1857-06DenitrificationbiologicalfilterastertiarytreatmentfornitrogenremovalSunYingxue1HuYincui1SunYunxiang2ShaoYiru11．DepartmentofEnvironmentalScienceandEngineeringBeijingTechnologyandBusinessUniversityBeijing100048China2．BeijingUrbanEngineeringDesign＆ResearchInstituteCo．Ltd．Beijing100037ChinaAbstractThemechanismofnitrogenremovalfromwastewaterbydenitrificationbiologicalfilterDNBFandtherelatedinfluencingfactorswereinvestigated．TheresultsshowedthatthestartupperiodoftheDNBFwasperformedwhenranafter14daysandtheremovalefficienciesofNO－3-NandTNwere80%～88%and76～80%respectivelywhiletheremovalefficiencyofCODwasover80%inthelaboratory-scaleexperiments．InstablerunningperiodoftheDNBFreactortheremovalefficiencyofNO－3-NandTNkeptstablewiththeremovalefficiencyof70%～85%and47%～64%respectivelywhenthewatertemperaturewas20～29℃hydraulicloadingwas1．5～2m3/m2·handCOD/TNwas3．7～4．5．MeanwhilealittleNO－2-NaccumulatedintheeffluentofDNBF．ThelevelofNH+4-NwasapproximatelyunchangedthroughthefilterwhilethelevelofNO－2-Naccumulatedfromthebottomto40cmofthefilterlayerandthenkeptstable．KeywordsbiologicalfiltertertiarytreatmentbiofilmdenitrificationbiologicalnitrogenremovalKM2012100110042008ZX07209-0072011－10－092012－02－291973～。[e-mail]12。、3。、、4。“-”5-8。910。DNBF1112。6、1314。。11．118L/h0．8h。100mm1100mm100mm30～50mm800mm200mm。0．9～1．1g/cm33～6mm4～7m2/g。。。7L/s·m2、15L/s·m23min。1Fig．1Schemeoftheexperimentalplant1．2、、、、、。CODN-1--15。22．1A2/O。pH7．0～8．0NaHCO32d。31m3/m2·hCODNO－3-N290～350mg/L40～56mg/L。CODNO－3-N2。COD3256mg/L9125mg/L2a。NO－3-N332mg/L99．1mg/L2b5NO－3-N5～99．8±1．5mg/L。2CODNO－3-NFig．2VariationofCODandNO－3-Nconcentrationsinbiofilmgrowthperiod85816。3。3Fig．3SEMofthebiofilm2．2COD、TN、NO－3-N160～200mg/L、40～60mg/L20～40mg/L1．2～2m3/m2·h15～20℃0．22～0．50mg/L。COD、TN、NO－3-NNO－2-N4。COD1437．6mg/LTNNO－3-N4Fig．4Variationofpollutantconcentrationsineffluentofbiologicalfilterinstart-upperiod11d16．7mg/L4．6mg/L。COD/TN2．7～5∶1NO－3-N78%～90%TN65%～80%。NO－3-N14dCOD80%。COD、TNNO－3-N。NO－2-NNO－2-N0．3～0．7mg/L。。。1．2～2m3/m2·h15～20℃COD/TN2．7～5∶114dCOD、TNNO－3-N7dCOD、TNNO－3-N79%～82%、76%～80%80%～88%。33．120114—920～29℃1．5～2m3/m2·h。COD、TN、NO－3-N90～138mg/L、28～35mg/L23～28mg/L。56NO－3-NTN。NO－3-N3．5～12．1mg/L614NO－3-N614NO－3-N3．5～7．7mg/L70%～85%。TNNO－3-N614TN12．3～16．8mg/L47%～64%。TNNO－3-N16。、。NO－3-NTN。COD7COD90～138mg/L614COD9095816～119mg/LCOD/TN2．8～3．83．2614COD123～138mg/LCOD/TN3．7～4．54．1。614COD/TN3．24．1NO－3-NTN56。7CODFig．7VariationofCODlevelsinstableperiod20～29℃1．5～2m3/m2·hTNNO－3-N28～35mg/L23～28mg/LCOD/TN3．7～4．5NO－3-NTN。TN17。3．2DO、pHNO－2-NNO－x-N。pH、DO、。8DO、pHNO－2-N。DO0．38mg/L95%0．5mg/L。DODONO－x-N。。。8DO、NO－2-NpHFig．8VariationofDO、NO－2-NandpHineffluentofbiologicalfilterpHpH7．0～8．0pH8．1～8．98．38。1mgNO－3-NNO－2-N3．57g16pH。NO－3-NNO－2-NNO－2-NNO－3-NNO－2-N。NO－2-N0．7mg/L0．2mg/L06816NO－2-N8NO－2-N5mg/L80%NO－2-N3mg/L。3．3、18。9。20～29℃1．5～2m3/m2·hCOD、NO－3-N、NH+4-NNO－2-N106±3．6mg/L、24±1．2mg/L、5．5±0．7mg/L0．8±0．2mg/LCOD106±3．6mg/L31±1．6mg/LNO－3-N24±1．2mg/L7±1．4mg/LNO－2-N0．8±0．15mg/L2．8±0．45mg/L。9CODFig．9VariationofnitrogendistributionandCODconcentrationsthroughthebiologicalfilter。NO－3-NNO－2-N。NO－2-N、C/N、、pH、NO－3-N、19。DONO－2-N19DO＜0．8mg/L20。40cmNO－2-NNO－2-N8DO。41CODNO－3-N290～350mg/L40～56mg/L5～9NO－3-N9．8±1．5mg/L。21．2～2m3/m2·h15～20℃COD/TN2．7～5∶114dCOD、TNNO－3-N79%～82%、76%～80%80%～88%NO－2-N0．3～0．7mg/L。320～29℃1．5～2m3/m2·hCOD/TN3．7～4．5NO－3-NTN70%～85%47%～64%。NH+4-NNO－2-N40cm。1BixioD．ThoeyeC．WintgensT．etal．Waterreclama-tionandreuseImplementationandmanagementissues．Desalination20082181-313-232ChengH．F．HuY．N．ZhaoJ．F．MeetingChina’swatershortagecrisisCurrentpracticesandchallenges．Environ．Sci．Technol．2009432240-2443．．20114RikeA．PietilinenO．P．RekolainenS．etal．Trendsofphosphorusnitrogenandchlorophyllaconcen-trationsinFinnishriversandlakesin1975-2000．Sci．To-talEnviron．20033101-347-595GujerW．Nitrificationandme—Asubjectivereview．Water16816Research20104411-196SattayatewaC．PagillaK．PittP．etal．Organicnitro-gentransformationsina4-stageBardenphonitrogenremov-alplantandbioavailability/biodegradabilityofeffluentDON．WaterResearch200943184507-45167SedlakR．PhosphorusandNitrogenRemovalfromMunici-palWastewaterPrinciplesandPracticeSecondEd．．LewisPublishersUSA19918ArnaldosM．PagillaK．Effluentdissolvedorganicnitrogenanddissolvedphosphorusremovalbyenhancedcoagulationandmicrofiltration．WaterResearch201044185306-53159KimY．TanakaK．LeeY．W．etal．Developmentandapplicationofkineticmodelonbiologicalanoxic/aerobicfilter．Chemosphere2008706990-100110RijnV．J．TalY．SchreierH．J．Denitrificationinre-circulatingsystemsTheoryandapplications．Aquacultur-alEngineering2006343364-37611JeongJ．HidakaT．TsunoH．etal．DevelopmentofbiologicalfilterastertiarytreatmentforeffectivenitrogenremovalBiologicalfilterfortertiarytreatment．WaterRe-search20064061127-113612JokelaJ．P．Y．KettunenR．H．SormunenK．M．etal．BiologicalnitrogenremovalfrommunicipallandfillleachateLow-costnitrif