处理低污染水的复合人工湿地脱氮过程

26320133ResearchofEnvironmentalSciencesVol．26No．3Mar．2013．J．2013263320-325．LINGZiweiTONGXinnanLIYahongetal．StudyonnitrogenremovalprocessoftreatmentsforslightlycontaminatedwateronhybridconstructedwetlandsJ．ResearchofEnvironmentalScien[e-mail]．*[e-mail]1111*1211．2002402．305-8506、．－－－ρNH3-NρTNNH3-NTN53.24%48.21%．93.00×105g－18.42×102mgm3·hρDO32.70×102mgm3·h32.09×102mgm3·h．．X522A1001－6929201303－0320－06StudyonNitrogenRemovalProcessofTreatmentsforSlightlyContaminatedWateronHybridConstructedWetlandsLINGZi-wei1TONGXin-nan1LIYa-hong1WANGXin-ze1XUKai-qin12KONGHai-nan11．SchoolofEnvironmentalScienceandEngineeringShanghaiJiaoTongUniversityShanghai200240China2．NationalInstituteforEnvironmentalStudiesTsukuba305-8506JapanAbstractInordertostudynitrogenremovalprocessoftreatmentsfortheslightlycontaminatedwateronhybridconstructedwetlandsthreeindicatorsincludingnitrogenconcentrationbacteriaquantityandintensityofnitrificationdenitrificationwereanalyzedintheDengbeiqiaowetlandsystem．Meanwhiletheprocessofnitrogenvariationandtheremovalratewerediscussed．TheresultsshowedthattheconcentrationofNH3-NandTNstepwiselydecreasedinthishrbridsystemofoxidationpond-surfaceflow-subsurfaceflow-surfaceflowwetland．RemovalratesofNH3-NandTNreachedfor53.24%and48.21%inaveragerespectively．IntensityofnitrificationintheoxidationpondandinthesurfaceflowwetlandweremuchhigherthanthoseinthesubsurfaceflowwetlandThefinalsurfaceflowwetlandownsthegreatestamountofnitratebacteria93.00×105g－1andthehighestintensityofnitrification8.42×102mgm3·hinthesurfacesoilwhileDOonthesubsurfaceflowwetlandisthelowestandintensityofdenitrificationinthesurfaceandthedeepsoilreachedfor32.70×102and32.09×102mgm3·hrespectively．Theprimaryunitofdenitrificationonhybridconstructedwetlandsisthesubsurfaceflowwetland．Keywordsconstructedwetlandlowcontaminatedwaternitrifyingbacteriaintensityofnitrificationnitrogenremoval1．2．、、3-6．DOI10.13198/j.res.2013.03.99.lingzw.01837-14．、TNNH3-N．．11.15×104m2ⅤGB3838—2002《》2×104m3d1．．、、．、、1.50×104、1.62×104、0.54×1041.34×104m2．1～5A1～A3、B1～B3、C1～C3、D1～D3、、、．1Fig．1SchematicdiagramofprocessflowandsamplingsiteinconstructedwetlandρTN0.40～4.20mgLρNH3-N0.05～0.80mgLⅤGB3838—2002ρTN《》15Ⅲ．1.220109—20125、2ρTNρNH3-N．20125．1～5、、、3ρTN、ρNH3-N、ρNO3－-NρDO．A1～A3、B1～B3、C1～C3D1～D31．30～10cm30～35cm3．1.3MPN10g100mL1mL99mLpH7.210．1mL32Griess．FeSO4·7H2O0.2gK2HPO41.0gMgSO40.3gCaCO35gNaCl0.3gcNO2－0.1mmolL1000mLpH7.2121℃15min16．17-18．ρTN、ρNH3-N、ρNO3－-NρDO《》19．SPSS17.0．22.120109—20125、2．22NH3-NTNNH3-N123262TNNH3-NFig．2RemovalofTN＆ammonianitrogeninhybridartificialconstructedwetlandTN53.24%48.21%．ρNH3-N0.13mgL0.40mgLρNH3-N0.02～0.14mgL0.06mgL．ρNH3-NρNH3-N．ρTN1.33mgL3.07mgLρTN0.11～2.43mgL0.68mgL．ρTNρNH3-N12、12NH3-NTN43.76%34.89%．TNNH3-N①、．．ρTNρNH3-N3.070.20mgL1.600.13mgL．②．10℃NH3-NTN20-22．③ρTNρNH3-N、23．1324-25TNNH3-N70%ρNH3-N10mgLρTN10．26-27ρNH3-NρTN0.2m3m2·d1.5d〔0.4m3m2·d0.75d〕TNNH3-N50%．2.2201253．ρTNρNH3-NρTN2.23mgL1.39mgLρNH3-N0.42mgL0.20mgLρNO3－-N0.16mgL2233．ρDOρNO3－-NρDOP＜0.050.74ρDO．1—2—3—4—5—．3Fig．3Waterqualityofinfluentandeffluentofeachprocess2.328．NH3-NNO2－-NNO3－-N．NH3-N29．NH3-N3．1．1Table1Resultsofnitrobacteriacount105g－10.55±0.122.80±0.551.81±0.2893.00±12.261105g－1MPN30-311332107g－1．2ρNO3－-N33ρDO．ρNO3－-N33．2.442．2．ρDO2Table2NitrificationanddenitrificationintensityindifferentunitofCW〔102mgm3·h〕〔102mgm3·h〕8.30±0.572.72±0.315.31±1.3021.62±2.066.41±0.025.26±0.5320.60±3.7815.25±1.870.25±0.010.14±0.0132.70±4.8632.09±8.248.42±0.454.10±1.4514.23±2.1215.50±2.19ρDO．ρDOρNO3－-N．34．2．NH3-N、ρDO32326NH3-N．TNNH3-N35-36．4TNρTN．ρDO．37．3a－－－NH3-NTN53.24%48.21%．．bNH3-NTNρNO3－-NρDO93.00×105g－1．cρDO．References1．J．2010303374-379．2．“”J．201124111203-1209．3TILLEYDRBROWNMT．WetlandnetworksforstormwatermanagementinsubtropicalurbanwatershedsJ．EcologicalEngineering1998102131-158．4VYMAZALJ．Theuseconstructedwetlandswithhorizontalsub-surfaceflowforvarioustypesofwastewaterJ．EcologicalEngineering20093511-17．5POACHMEHUNTMBVANOTTIKCetal．ImprovednitrogentreatmentbyconstructedwetlandsreceivingpartiallynitrifiedliquidswinemanureJ．EcologicalEngineering200320183-197．6．J．200123370-72．7GREENMFRIEDLERESAFRAIS．EnhangingnitrificationinverticalflowconstructedwetlandutilizingapassiveairpumpJ．WaterRes199832123513-3520．8SAEEDTSUNG．AreviewonnitrogenandorganicsremovalmechanismsinsubsurfaceflowconstructedwetlandsdependencyonenvironmentalparametersoperatingconditionsandsupportingmediaJ．JEnvironManage2012112429-448．9SPIELESDJMITSCHWJ．Theeffectsofseasonandhydrologicandchemicalloadingonnitrateretentioninconstructedwetlandsacomparisonoflow-andhigh-nutrientriverinesystemsJ．EcologicalEngineering1999141277-91．10KADLECRHKNIGHTRL．TreatmentwetlandsM．FloridaUSACRCLewisPublisher19961-5．11VYMAZALJ．RemovalofnutrientsinvarioustypesofconstructedwetlandJ．SciTotalEnviron200738012348-65．12．J．20062682670-2677．13．J．2011412400-405．14．J．20072762627-2635．15．R．2010．16．D．200323-27．17．M．．198315-17．18．M．1986110-118234-241．19．M．4．2002209-210255-257266-268