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污水的生态处理技术EcologicaltechnologyinwastewatertreatmentTraditionalwastewatertreatmenttechnology(Largequantitiesofenergyandchemicalagentsareneeded)Ecologicalwastewatertreatmenttechnology(Naturalpurificationprocess)•Eco-pondssysteminwastewatertreatment•Artificialwetlandsystem•EcologicaltreatmentofurbaninlandriverEcologicaltechnologyinwastewatertreatmentEco-pondssysteminwastewatertreatmentEco-pondssysteminwastewatertreatment1Characteristicsofeco-pondssystem•Lowcosts•Resourcerecovery•Convenientmaintenance•Decoratingenvironment•Lessexcesssludgeproduct•Strongadaptabilityforshockloading2Purificationmechanismofeco-pondssystemSunlightO2WastewaterSettlingmatterO2AlgaeandotheraquaticplantH2O,CO2,NH3,PO43-BacteriaandfungalDuckandgooseFishPelagicorganismShrimpSpiralandshellAerobiclayerFacultativelayerAnaerobiclayerOrganicsubstancesCarboxylicacidEthanolAldehydeCH4+CO2+NH3+H2S+N2+H2Eco-pondssysteminwastewatertreatment3Constitutionofeco-pondssystem•Pretreatmentsystem•Anaerobicpond•Facultativepond•Aerobicpond•Aerationpond•Aquaticplantpond•Fishingpond•StoragepondEco-pondssysteminwastewatertreatment4Typicalprocessofeco-pondssystemWastewaterPretreatmentGridGritchamberAnaerobicpondFacultativepondAerationpondAquaticplantpondFishingpondFeedingduckpondAquaticcroppondReedfieldFarmfieldirrigationRefillundergroundwaterEco-pondssysteminwastewatertreatmentArtificialwetlandsystemArtificialwetlandsystem1PlantsinwetlandCannaceac(美人蕉)Sedgefamily(纸莎草)Wateronion(水葱)(再力花)Reedgrass(芦苇)绿叶荻Bamboo(富贵竹)花叶荻Artificialwetlandsystem2ConstitutionofartificialwetlandInfluentpipeEffluentpipeImpermeablelayerPackinglayerPlantsPercolationfiltrationlayerPercolationfiltrationlayerArtificialwetlandsystem3Typesofartificialwetland•Surfaceflowwetland•UnderflowwetlandArtificialwetlandsystem4PurificationmechanismsofartificialwetlandRemovalofSS•filtration•deposition•adsorptionArtificialwetlandsystemRemovaloforganicsSunlightPhotosynthesisO2+BiofilmOrganicsH2O+CO2ArtificialwetlandsystemRemovalofnitrogenAirN2+N2ONH3OrganicNNH4+NO3-NH4+NO3-NO2-WaterSettlingmatterimmobilizationassimilationvolatilizationdiffusionammonificationnitrificationdenitrificationArtificialwetlandsystemRemovalofphosphorus•assimilationduetoplantsabsorption•chemicalprecipitation•bio-absorptionArtificialwetlandsystemEcologicaltreatmentofurbaninlandriverEcologicaltreatmentofurbaninlandriverEcologicaltreatmentofurbaninlandriverEcologicaltreatmentofurbaninlandriverEcologicaltreatmentofurbaninlandriverEcologicaltreatmentofurbaninlandriver金山公园白蛇岛挺水植物湖滨带沉水植物金山湖前置处理系统平面布置