Dissolved Air Flotation Description

Flotation consists of separating solids from the water phase by attaching the solids to fine air bubbles to decrease the densityof the particles which float instead of sinking. The rising solids are called the “float” and are skimmed off the surface and further processed in the sludge train.Chemicals can be added to improve the separation: first for coagulation and then for flocculation.

The type of flotation used by Dissolved Air Flotation (DAF), in which the suspension is saturated with air at high pressure. Bubbles are released to the water and will attach to the suspended solids.The bubbles from a DAF system are much smaller than in other types of flotation systems and better adhere to the solids.This makes DAFs one of the most efficient flotation options of wastewater treatment.

Dissolved Air Flotation Feature

Flow rate of one set: 1-200 m³/h.
Recycling flow dissolved air flotation.
High efficiency pressurization system providing high quantity dissolved-air water to create micro bubbles.
Custom design on different dissolved air flotation equipment and recycle flow ratio according to the type of wastewater treatment requirement to achieve target removal effect and stability.
Adjustable PP chain type skimmer to suit the different quantity of sludge.
Integrated coagulation 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, 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

Meat, poultry, and fish processing
Dairy industry
Petrochemicals
Pulp and paper
Food and beverage