Liquid purification or separation – Structural installation
Patent
1983-02-15
1984-09-25
Sever, Frank
Liquid purification or separation
Structural installation
210322, 210513, 210525, 210923, B01D 2102, B01D 2124
Patent
active
044734670
ABSTRACT:
The invention provides a septic tank system of greatly improved effectiveness in maintaining optimum bacterial action for a maximum length of time by utilizing a plurality of serially-connected tanks with the water level in each successive tank being lower than that in the first tank so that gravity flow is established between the successive tanks. A unique transfer means is provided between each of the successive tanks comprising one or more horizontal pipes having their inlet ends closed, each horizontal pipe having a wide opening in the upper portion thereof at a level preferably above the centerline of the pipe in order to permit the removal of scum through said openings by entrainment and/or suction action of the fluid flowing through the transfer pipe, thereby permitting gases to freely escape through the scum from the effluent surface of each tank and preventing deleterious effects of trapped gases upon the biodegradation action normally produced in each successive septic tank. The system also optionally includes apparatus to accommodate installation in severe clay, high-water and limestone areas, and the like.
REFERENCES:
patent: 3666102 (1972-05-01), Blanchard
patent: 4100073 (1978-07-01), Hopcroft
patent: 4290887 (1981-09-01), Brown et al.
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