The treatment process of residual flow by anaerobic activated sludge wastewater contact ".Method of treatment of residual flow, contact anaerobic, and system for the treatment of residual flow and residual flow connected in communication with the anaerobic contact element.A residual activated sludge, produced by a second process of residual flow influence.Can be introduced into the anaerobic contact element and mixed with residual flow influential to be processed.The anaerobic contact element can be kept in conditions which facilitate the absorption of soluble organic pollutants and the formation of fluid to produce a liquid influent traState and a residual sludge disposal.
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