The DAF unit technology uses extremely small air bubbles to lift suspended solids and oil to the top surface. The formed sludge layer is scraped into a sludge holding tank. The addition of coagulation and flocculation chemicals may be required to enhance the performance.
Removal efficiency is usually superior to gravity bases systems and often applied as polishing step (downstream of CPI)
The DAF unit can be supplied with a gas-tight cover, coagulation & flocculation dosing and mixing equipment and air-saturation by special pumps or in separate pressure vessel.
Adjustable effluent weir troughs
Epoxy coated carbon steel tank
Seamlessly integrates with other Hydro-Flo offered wastewater products
Stand alone operation
Standard units can be manufactured for flows from 5 gpm to 3500 gpm and above, in a single above grade tank
Structural steel support legs
Access platforms with ladder or stairs Automatic sludge pump out packages Chemical pretreatment systems Concrete tank designs for large in ground installations Duplex systems for redundancy Effluent monitoring Effluent sampling Explosion-proof design Flash mix/flocculation tanks with mixers Full FRP or stainless steel construction Influent equalization Influent / effluent lift stations Instrumentation and controls Removable covers with gaskets Integral mechanical sludge thickener On board reagent storage (day tanks) Pilot size units for on-site testing Potable water design Special coatings Sludge handling and dewatering
Dissolved Air FlotationApplications
Roduced water polishing (off and onshore)
Refinery effluent polishing
(Petro)chemical in-process flows or effluents
Food, textile, automotive and steel industry