Econvert-DGF® (Dissolved Gas Flotation) - Anaerobic Treatment

Your challenges

Industrial food and beverage plants often deal with complex wastewater streams and operational pressures. Key challenges include:

Strict discharge regulations

Wastewater containing high levels of TSS and FOG are required to meet incredibly tight environmental regulations for discharge.

High energy costs

Operating aerobic treatment systems or other energy-intensive equipment in your factory can lead to rising energy bills.

Expensive waste handling

Organic by-products and factory waste often require external transport and disposal, adding logistical and financial burdens.

Lost resource potential

Valuable resource potential from wastewater and factory waste are often discarded rather than recovered.

Do you want to know how our innovative wastewater treatment and biogas desulfurization solutions can benefit your business?

Our Solutions brochure

The process

Wastewater containing coarse solids is first macerated, then fed into a stirred anaerobic digester with a membrane roof for gas storage. The membrane support net also serves as a bacteria carrier, enabling partial desulphurization of the biogas. Gentle mixing and solid-liquid separation help preserve biomass activity and ensure consistent performance. The treated water is either discharged directly or polished, while the biogas is recovered for energy use.

The solid-liquid separation step with a Dissolved Gas Flotation (DGF) is the ideal process unit as it is robust and at the same time gentle for the treatment of biomass. The clarified liquid is directly discharged or introduced to a polishing step. Due to the high removal rates in the Econvert-DGF^® process any aerobic post-treatment is very compact and requires less energy to meet final requirements. The anaerobic digestion in combination with the solid-liquid separator makes a suitable one-step approach when combine two streams.