Municipal wastewater treatment by biofiltration: SIAAP feedback
For more than 15 years, the interdepartmental association for sewage disposal in Paris conurbation (SIAAP) research center has studied wastewater treatment by biofiltration. Such studies, carried out at industrial and semi-industrial scales (wastewater treatment plants/pilot and prototype units), have allowed SIAAP to expand its knowledge of this wastewater treatment technology. This paper aims to review the available information on the performance and limits of these immersed biological systems (purification performances and effects of the operating conditions on the pollution abatement efficiencies) and about the mechanisms of colonization of filter media by bacteria populations.