Patent ID: 6207061
Filing Date: 2001-03-27
Classification: B01D,Y10S

Abstract:
A method for filtering hydrocarbon contaminated water for separation and recovery of the contaminants and recirculation of the water, which comprises:filtering the hydrocarbon contaminated water by causing it to flow downwardly through a series of successive basins filled with water (2, 3, 4) separated by walls (22, 23), an upper part of each basin bounded by fixed partition walls (32, 33) projecting downwardly in the water and filled with filtering hydrocarbon cushions (12, 13, 14), the final downstream cushion of filtering hydrocarbon (14) bordered by a vertically displaceable outlet bin (47) for the contamination enriched hydrocarbon, and further comprising a water outlet (5, 6, 7, 8) comprising two successive horizontal watercourses (5, 6), having a declining ceiling (10, 11) in the direction of flow, and thereafter a vertical S-pipe (7, 17) having an outlet (8).