PROCEDIMIENTO DE TRATAMIENTO DE AGUAS URBANAS USADAS E INDUSTRIALES CONTAMINADAS.

摘要

The invention relates to a process for the treatment of polluted urban and industrial wastewater. In the process according to the invention the wastewater proceeding from primary treatment is passed by gravity so as to percolate through two layers of peat resting on a filtering support, in principle a layer of sand and gravel.