DeltaFloat® – Dissolved Air Flotation (DAF)
Circular clarifier that includes the highly efficient Air Saturation Reactor and an effective inlet distribution system. The circular design has been widely accepted globally for its effectiveness and low maintenance runnability.
DELTAFLOAT SYSTEM
DeltaFloat plants are custom designed for each application thanks to different sizes included in standard production program.
The components of the system are pre-assembled and tested in the workshop to guarantee quick and safe assembly on site.
The flotation tank
The self-supporting
flotation tank is circular, manufactured in stainless steel (types 300) and consists of several parts that join together quickly.
Upon request, the tank can be produced completely in concrete or, if necessary with stainless steel coating or concrete bottom with stainless steel sides.
The incoming stream of water to be treated is mixed with previously pressurized water that contains a high level of dissolved air. It then distributes itself evenly from the centre toward the edges of the circular flotation chamber. This dynamic is pre-calculated to allow the optimal separation of the solids particles from the liquid in a very short processing time.
A
ring-shaped holed pipe is immersed around the inside of the flotation tank wall to receive the clarified water and move it to a main outlet manifold.
A butterfly pneumatic control valve mounted at the outlet of the manifold keeps the water level in the cell to a setpoint that is measured by a level transmitter and controlled by an electronic controller.
This control allows the level in the tank to be regulated independently from variations of the inlet flow.
The
rotating bridge, which rides on the top of the cell wall and is supported in the centre, is driven by an unique rack and pinion system that ensures uniform and reliable anti-slip operation. This operates equally well for indoor or outdoor installations. A motor-driven
spiral skimmer is positioned on the bridge. It consists of two differentiated scoops along its length – a design that ensures uniform collection and discharge of the sludge.
The rotating speeds of the bridge and the skimmer are regulated by frequency inverters placed in the
electric control panel. That permits control of the sludge consistency, which can vary from 2% up to 8% for various applications.
Material that settles is continuously removed by a special bottom scraper that rotates with the bridge. This material collects in a built-in sump for timed discharge.
View brochure (pdf)
TigerFloat® – Dissolved Air Flotation (DAF)
Rectangular design that fits into tight spaces and includes rugged lamella plates to maximize solids removal. This unit also includes the patented ASR technology.
TIGERFLOAT is a high performance and modern concept clarifier. The name perfectly describes the machine with its dynamic and functional design, with aggressive results against the hardest effluent to be treated.
In our TIGERFLOAT, which is different than the traditional circular tank flotation systems, the separation of the solids to be removed is made much more efficient because of the advanced technology design that forces fluids to pass through a laminated pipe system.
The design, together with the air saturation reactor (A.S.R.) for dissolving air, has been proven to be reliable and effective.
TIGERFLOAT Working Principles
The effluent to be treated enters near the top of the tank and flows into and through the laminated pipe system. Some or all of the flow is put through the highly efficient pressurized Air Saturation Reactor (A.S.R.) to dissolve air in the water. The air releases as micro-bubbles as the influent enters the tank and flows down through the laminated pipes. The air bubbles attached to any solids and rise to the top of the pipes where their ascending flow pulls the flocs which then form a layer of floated material on the surface of the clarifier. The clarified water continues to flow to the bottom, in countercurrent fashion, where it is collected and removed.
A specified dosage of coagulant and/or flocculant is added prior to the effluent entering the tank. This is required for the collection of the suspended or dissolved particles. The amounts required are dependent on the type of material and water characteristics and can be determined in a qualified laboratory.
View brochure (pdf)
