| 摘要 |
A system for producing a liquid fertilizer containing oxygen is provided to prevent oxygen dissolved in a liquid fertilizer or nutrient solution from being separated by dissolving oxygen in multiple steps. A system(10) for producing a liquid fertilizer containing oxygen comprises: a plurality of nutrient solution tanks(11,12,13) in which nutrient solutions or liquid fertilizers are stored; a mixing tank(14) linked to each nutrient solution tank via a first linking duct; a water feeding tank(15) linked to the mixing tank via a second linking duct(22) for supplying water; a main feeding line(30) that supplies a mixture of water with a nutrient solution or liquid fertilizer mixed in the mixing tank to a hydroculture medium or soil culture medium, and having a pump(31), a first valve (32) and branched pipes(33) linked thereto; an oxygen dissolving unit linked to the main feeding line between the pump and the first valve via a third linking duct(23) for dissolving oxygen into the mixed solution supplied to the main feeding line by the pump; a fourth linking duct(24) connecting the main feeding line between the first valve and the branched pipe with the oxygen dissolving unit(40) for discharging the mixed solution in which oxygen is dissolved; an oxygen generator(50) linked to the oxygen generator via a first oxygen feeding pipe(51); a bubble generator disposed in the mixing tank for supplying oxygen to the mixed solution; a fifth linking pipe(25) having an orifice(91); and a third oxygen feeding pipe(53) connecting the first oxygen feeding pipe with the orifice. |
