Cistern for natural purification and plankton cultivation

Details Cistern for natural purification and plankton cultivation Cistern for natural purification and plankton cultivation

1983-05-17

1984-09-25

Fisher, Richard V.

Liquid purification or separation

Structural installation

Closed circulating system

2101951, B01D 2316

Patent

active

044734689

ABSTRACT:
A cistern or aquarium for fish inhabitation effects natural purification and plankton cultivation so as to imitate natural ocean systems. Water is made to rotate in the cistern, and water is drawn off for sand filtration and purification from upper and lower central positions of the cistern. The filtered water is passed through a sterilization bath including a sand layer containing plankton cultivation germ before being returned to the cistern. The invention eliminates the need of periodic water exchange in aquarium systems.

REFERENCES:
patent: 1200126 (1916-10-01), Mitchell
patent: 3025831 (1962-03-01), Berardi
patent: 3374771 (1968-03-01), Michie et al.
patent: 3557753 (1971-01-01), Dantoni
patent: 3983843 (1976-10-01), Johnson

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