Aerobic wastewater treatment
Description of the Offered or Requested technology, innovative product or know-how/Expertise or partner sought...:
Aerobic wastewater treatment is a very energy-intensive process, in which most of the energy invested is used for aeration (using devices such as diffusers, agitators, surface aerators, etc.). The accepted conventional aerobic wastewater treatment uses the activated sludge process.
Emefcy has developed two products that address the high energy issue consumption:
SABRE - for the treatment of municipal wastewater in small or medium flow rates, is an aerobic membrane bio reactor, based on biofilm that consumes no energy for aeration; contrary to common processes such as activated sludge. SABRE reduces the amount of energy consumed in the operation of a WWTP (wastewater treatment plant) by up to 80%. SABRE units are made from a sleeve of a breathable membrane, in which wastewater flows. The sleeve is rolled to create spiral-shaped modules. Air diffuses naturally into the membrane, obviating the need for diffusers, blowers and surface aerators. The special form and process create simultaneous aerobic and anaerobic conditions, permitting nitrification and de-nitrification at the same time as the breakdown of organic carbon matter. This allows COD removal and nitrate removal in a single process. The treatment using a bio-film reduces excess sludge up to 50% due to high sludge age. The system is odorless and noiseless.
EBR - Electrogenic Bio Reactor transforms wastewater treatment plants from cost centers to profit centers by substantially reducing two of the highest operational expenditures of WWTP – the energy cost and the sludge treatment and removal costs. These two components account for 75% of the WWTP operating costs. EBR is destined for industrial wastewater.
The product is based on three components: Anodes, where the bacterial oxidation of the organic matter occurs; cathodes, where the corresponding reduction reaction takes place; and an electrical circuit that includes the external load, connecting the anodes to the cathodes. A biofilm naturally develops on the anode, oxidizing the organic matter into carbon dioxide.
Protons migrate through the water, and electrons travel through the electric circuit, towards the cathode. The reaction on the cathode is due to a reduction of atmospheric oxygen in the presence of protons to water. As a result, organic matter is oxidized, as it would be in conventional treatment methods. However, unlike conventional treatment methods, an electric current is produced, rather than energy being consumed during the process.
EBR produces 80% less sludge than the conventional process. The energy produced by the bacteria metabolizing the COD is used as electricity.
The process has a high tolerance to salinity and a wide pH range.
Profile of target partner:
PARTNER: engineering consulting companies specializing in wastewater treatment
CUSTOMER: resort and hotels in the south of France
- Water Pollution / Treatment
- Recycling, Recovery
- Waste Management
Type of co-operation interested in:
- [offer & search] Commercial cooperation