HUBER Dissolved Air Flotation Plant HDF

Wastewater treatment, product recovery and process water treatment through flotation with micro bubbles.

Process water is needed in many production processes as a solvent, for production of material, or for cleaning purposes. Water is recirculated and reused for economical and environmental reasons. Grease, oil, fat, floating and suspended solids, settling material, and dissolved components need to be separated to provide good and uniform water quality. Recovery of valuable product from the water may be another additional objective. In addition, clogging and excessive wear of pipelines and other associated equipment is prevented, which increases the operating reliability of the production plant.

Where used process water is discharged as wastewater, pre-treatment is often required to prevent toxic or otherwise harmful substances from entering the sewer system and reduce thus surchar 2000 ges and fees. Conventional gravity clarifiers are often incapable to achieve sufficient pre-treatment. Various types of flotation processes have been developed, whereof dissolved air flotation with pressure water recirculation has proven most effective.

The HUBER Dissolved Air Flotation Plant provides a significantly improved flotation process with a special inlet structure that provides optimum control of the flow within the flotation tank.

Benefits

Advantages of the HUBER Dissolved Air Flotation Plant

completely made of stainless steel (1.4571)
chemical phase can be added - increased separation efficiency
complete solution with mechanical pre-treatment (ROTAMAT® Ro 1, Ro 2, Ro 5, Ro 9)
standard sizes -> favorable prices
low space requirement
non-clogging saturation system
non-clogging integral lamella packages
no costly pressure tanks -> low maintenance requirements
increased effective separation area due to integral lamella separator

Details

System approach

We provide complete systems for mechanical-physical water treatment by combining the HUBER HDF with other HUBER components:

Chemical pre-treatment by precipitation, neutralization and flocculation in a tube reactor to improve separation efficiencies, and even remove some dissolved pollutants

Mechanical pre-treatment with

Treatment of the removed scum and sediment:
- Sludge thickening with ROTAMAT® Rotary Screw Thickener RoS 2 and
- Sludge dewatering with ROTAMAT® Screw Press RoS 3

Complete wastewater treatment:
- Additional biological treatment with HUBER VRM® Membrane Bioreactor (-> direct discharge).
- Tertiary filtration with HUBER CONTIFLOW® CFSF