Patent ID: 6372137
Filing Date: 2002-04-16
Classification: C02F,Y02W

Abstract:
A method of treating sewage wastewater within a treatment assembly which comprises a septic tank and an aerobic filter having a filter medium, said method comprising:(a) flowing substantially untreated sewage wastewater having a significant concentration of waste solids into said septic tank and allowing said solids to distribute into a lower horizontal sludge layer and an upper horizontal scum layer within said septic tank with a relatively clear horizontal layer of liquid therebetween; (b) flowing at least a portion of said liquid from said septic tank through said aerobic filter to produce a filtrate; (c) returning at least a portion of said filtrate from said filter to said septic tank; and (d) flowing said portion of said filtrate through said septic tank sequentially around opposite sides of at least one partition which permits communication of said waste solids between said opposite sides.