C - Chemistry – Metallurgy – 02 – F
Patent
C - Chemistry, Metallurgy
02
F
362/9
C02F 3/22 (2006.01)
Patent
CA 1164585
ABSTRACT Apparatus for purifying a body of water is described. Air is drawn in by a water-jet pump and the air rich water is pumped through a conduit, the pump and the conduit lying beneath the surface of the water, as is known. According to the invention, the conduit is double walled, having an air permeable inner wall and an air impermeable outer wall. Air bubbles tend to collect on the inner wall, which may be formed as a fine-mesh screen, thus increasing the period of residence of the air in the body of water and enhancing the purifying effect. The apparatus is carried on a frame comprising an upper tubular frame and a lower tubular frame interconnected by vertical tubes. The combined frame may be lowered and raised by flooding and venting, respectively, by means of suitable valves. Longitudinal sections of the frame may be partitioned off from each other, thus permitting frame sections to be controlled independently so as to vary the attitude of the frame.
383900
Fetherstonhaugh & Co.
Wsw-Planungsgesellschaft Mit Beschrankter Haftung
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