Description
Dissolved air flotation Description
Dagyee DAF System proactively promotes solid/liquid separation providing better contaminant removal, more efficient chem usage and drier sludge – using a much smaller footprint than conventional DAFs. However, as opposed to DAF's that require significant retention time and rely on the old-school particle collision process to float solids, the DAF System injects air into 100% of the waste stream while pushing water through a series of hydrocyclones under controlled pressure, removing up to 100% of TSS & FOG. Chemicals are uncoiled in the Heads availing more than 2x the charge sites resulting in a higher rate of contaminant removal. Since separation occurs in the Heads, large tight flocs float and are skimmed off the tank into a sludge hopper. Drier sludge ensues as the air dissipates and chemicals recoil, to naturally dewater the flocs. Costs are reduced due to lower chemical, sludge handling and building costs.
Dissolved air flotation Feature
Flow rate of one set: 1-300 m³/h;
Recycle flow Dissolved air flotation;
High efficiency pressurization system providing high quantity dissolved-air water to create large quantities of small bubbles;
Custom design on different dissolved air flotation equipment and recycle flow ratio according to the type of wastewater and treatment requirement to achieve target removal effect and stability.
Adjustable stainless steel chain type skimmer to suit the different quantity of sludge;
Integrated coagulation tank and or flocculation tank and cleaning water tank(as optional)is available to save the space and cost;
Automatic and remote controllable;
Material of construction: carbon steel epoxy painted, carbon steel FRP line, stainless steel SS304/SS316L.
Dissolved Air Flotation Available Options
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 Flotation Applications
Oil removal 30 - 98% up to 2 - 10 ppm
COD reduction 30-92%
TSS removal 50 - 97%
Up to 10-40 ppm
Floated sludge thickening 4 - 10%
