INTEGRATED SYSTEM OF A METHANOGENIC ANAEROBIC REACTOR AND MEMBRANE BIOREACTOR FOR THE ELIMINATION OF ORGANIC MATERIAL AND NITROGEN FROM WASTEWATER.

摘要

The invention relates to an integrated system of a methanogenic anaerobic reactor and membrane bioreactor, and to a method for the elimination of organic material and nitrogen from urban and industrial wastewater, preferably with COD concentrations of between 150 and 5000 mg/l and where the total nitrogen elimination is between 15 and 50 mg/l, at temperatures higher than 15°C. The purification of the wastewater is carried out over three treatment steps: a methanogenic anaerobic step, an anoxic step with biofilms and biomass in suspension, and an aerobic filtration step with biofilms and biomass in suspension.