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Dissolved Air Flotation (DAF) Unit removes emulsified oil and suspended solids from oily wastewater through micro-bubble flotation. High-efficiency oil-water separation.

Influent oil: 500–5000 mg/L → Effluent: <20 mg/L. Solid removal: >95%. Hydraulic loading: 5–15 m³/m²·h. Micro-bubble size: 30–50 μm.

Pressurized air saturation tank. Recycle pump. Chain-and-flight skimmer. Sludge hopper with screw conveyor. Chemical coagulation and flocculation tanks upstream.