Redox DAF - Model KWF

KWF DAF

Typical Redox KWF DAF

Over many years the Redox engineers have developed reliable and efficient wastewater-treatment-systems. Depending on the industry and application; mechanical, physical, physico-chemical and biological treatment-systems are applied. Often systems are applied separately but any combination is possible due to the modular design. The Redox flotation system is designed on present and future discharge demands and can be extended without investing in additional new treatment systems.

Suspended solids, grease and oil are very efficiently removed by dissolved air flotation (DAF) while sediments like sand are removed by a spiral conveyor over the total flotation tank length. This ensures a trouble free operation with minimal maintenance requirements.

The floated materials are collected at the surface of the flotation system, where they are dewatered to a maximum by a scraper-/thickener-system. This system is a unique development, resulting in exceptionally high dry solids contents. The combination of screening and DAF results in BOD/COD-reductions up to 50% depending on the application. In many cases however chemical additions are required to obtain higher reductions of the pollutants. Coagulation and flocculation is realized in a "pipe reactor" where under strict controlled conditions chemical are dosed for coagulation (destabilization of f.e. emulsions) and flocculation (conglomeration of destabilized particles). Chemical treatment in combination with dissolved air flotation results in BOD/COD reductions of 80% and more depending on the application.

Standard systems are available in a range of 5 m³/hr. to 300 m³/hr. The treatment of larger capacities are realized by combining or expanding systems. If higher reductions of BOD/COD and Nitrogen are required, or if chemical sludge is not re-usable or accepted, Redox has developed a series of continuous and discontinuous biological treatment-systems. A significant innovative feature is the flotation of biological sludge, resulting in dry solid contents of the separated sludge of 8-12% with effluent suspended solids less than 10 mg/l. Consequently further dewatering costs by presses, centrifuges, etc. will be minimized.

Redox B.V.. is represented all over the world, ensuring local service before, during and after the installation of its water treatment systems.

RPF Pipe Flocculator

Typical Redox RPF Pipe Flocculator

KWF DAF System

From an economical and technical viewpoint, industries need compact, efficient and easy to maintain treatment systems.

Our engineers have designed a standardized modular treatment system, based on the very innovative plate technology in combination with micro flotation.

Microscopically small air bubbles are released in the water to be treated making separation possible of dispersed pollutants. The corrugated plates increase the separating surface area of the treatment system resulting in very low overflow rates or rising velocity of the materials to be separated under completely laminar and stable conditions.

KWF DAF

KWF DAF Schematic

Redox KWF DAF Unit Schematic

The aeration systems can be either executed with a multistage side channel recirculation pump (K1), or an air saturation unit (K2). The sludge collecting compartment can be replaced with a spiral conveyor discharge for heavy sludges.

All REDOX-systems are in accordance with C. E.norms.

Features of The KWF Range

Ledbury Fat Separator DAF

Typical Redox Fat Separator DAF

The KWF range of DAF units has the following design features:

Typical Applications of the KWF DAF

The KWF range of DAF units have been used successfully in the following applications: