Multi-layer aerating filter

Details Multi-layer aerating filter Multi-layer aerating filter

1992-12-18

1993-06-29

Silverman, Stanley S.

Liquid purification or separation

With gas-liquid surface contact means

210169, 2102212, C02F 302, C02F 310

Patent

active

052231291

ABSTRACT:
A multi-layer aerating filter comprises a plurality of pan-like containers being sealed and arranged in a stack and disposed within a casing. Each container has at least a water level pipe and a plurality of apertures on the bottom thereof. A plurality of infiltration spheres are disposed on the inner surface of the bottom of each container. A water inlet pipe and a blow-off pipe pass through the top of the casing and penetrate into the uppermost container. An air supply pipe passes through the casing and penetrates into the lowest container. A water discharge pipe is installed at the side of the casing near the bottom thereof. Aquarium water flowed into the containers via the water inlet pipe is aerated by the air charged into the containers via the air supply pipe to increase dissolved oxygen content and to facilitate the attachment of nitrifying bacteria on the infiltration spheres and cultivation of active sludge.

REFERENCES:
patent: 308575 (1884-11-01), Puffer
patent: 4333893 (1982-06-01), Clyde
patent: 4613433 (1986-09-01), McKeown
patent: 4931401 (1990-06-01), Safi
patent: 5160607 (1992-11-01), Thiemer et al.

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