Secondary Dissolved Air Flotation (DAF) Systems Application in Food Wastewater Treatment Case 2024年11月21日 Application info:Installation address: A famous food factory in ShanghaiIndustry: Fast Food and Convenience Food ProcessingWastewater Characteristics:Wastewater Composition: Contains grease and suspended solidsWWTP Capacity: 800m3/dPH Value: 6-8 (Neutral to slightly alkaline)COD: 500-800 mg/LEffluent discharging Requirements: Must meet the standards for discharge into the municipal sewage networkTreatment Process Flowchart:Oil Separator → Equalization Tank → Primary DAF → A/O Tank → Sedimentation Tank → Secondary DAF → Discharge into SewerSecondary DAF (dissolved air flotation) Equipment Performance:Influent Suspended Solids (SS): 150-300 mg/LEffluent Suspended Solids (SS): Less than 30 mg/L