Aerobic techniques transform, by means of aeration, the organic pollution into carbon dioxide and biomass. They require oxygen that is taken from the air or injected as such. Beside the BOD removal, aerobic plants can be designed to eliminate the ammoniacal nitrogen and the oxidized nitrogen (de-nitrification) and the phosphates (de-phosphatation). According to the type of wastewater to be treated, TDFC selects the most appropriate technique, with   or without carrier material: fixed biomass, activated sludge (conventional type, sequential batch reactor, contact type, step-feed type), etc. In case of industrial wastewater with high organic load, TDFC has recently improved its experience in the membrane bioreactor (MBR) technology. This technology achieves extreme biology conditions (high pollutants removal efficiency) and very high effluent quality (complete removal of suspended solid).       << Back