Liquid purification or separation – With gas-liquid surface contact means
Patent
1997-12-29
1999-10-26
Upton, Christopher
Liquid purification or separation
With gas-liquid surface contact means
210194, 210220, 210615, C02F 306
Patent
active
059722126
ABSTRACT:
A waste water purifying apparatus utilizes microorganisms, which comprises an inner casing (1), an outer casing (2), a waste water supply tank (3) and an air supply pipe (4). The inner casing is a vertical type and its upper and lower end are open. Plural porous discs 7 of polyethylene which have liquid passages (6) are piled in the inner casing with each space between every two carrier discs.
The outer casing is a vertical type whose bottom is closed by a bottom cap (12) and arranged coaxially with the inner casing with a downward circuit (13) for liquid there between. The outer casing has outflow ports (14) for the treated water.
The waste water supply tank is for having waste water a head to flow into the outer casing, above which a waste water supply pipe (15) is open. The tank communicates with the outer casing by means of a leading pipe (19) and it is provided with an overflow to keep a water level constant.
The air supply pipe is connected with an air scattering disc (22) below the lower end of the inner casing.
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Hongo Company Limited
Upton Christopher
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