Plant husbandry – Water culture – apparatus or method – Nutrient recirculation system
Patent
1991-01-30
1994-02-15
Raduazo, Henry E.
Plant husbandry
Water culture, apparatus or method
Nutrient recirculation system
A01G 3100
Patent
active
052855953
ABSTRACT:
The present invention controls the concentrations of oxygen and carbonate gases in a hydroponic solution in a growing pool, by independently connecting online to a growing pool a hydroponic-solution feeder in the structure such that a plurality of semipermeable-membrane tubes to circulate liquid fertilizer (or water) is placed and arranged in a tank to circulate water (or liquid fertilizer), and a controller of dissolved gas concentration in the structure such that a hydroponic-solution conduit and a gas conduit are formed separately by arranging in the tank a separating membrane to pass only gas and prevent the permeation of liquid, and circulating oxygen and/or carbonate gas in the gas conduit of the controller of dissolved gas concentration, along with the circulation of the hydroponic solution in the growing pool through the hydroponic-solution conduit while appropriately controlling the concentration of liquid fertilizer in the hydroponic solution by means of the hydroponic-solution feeder, whereby the dissolved gas in the hydroponic solution is substituted with oxygen and/or carbonate gas.
REFERENCES:
patent: 3577678 (1971-05-01), Barton
patent: 3925926 (1975-12-01), Shigeo
patent: 4149970 (1979-04-01), Francis
patent: 4543744 (1985-10-01), Royster
patent: 4805343 (1989-02-01), Patterson
patent: 5042196 (1991-08-01), Lukawski
patent: 5044117 (1991-09-01), Kuckens
Erma Incorporation
Raduazo Henry E.
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