| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a gas dissolving device to have excellent control over the enrichment of an active gas such as oxygen gas, and provide a gas dissolving device designed to treat contaminated substances, dead water or the like to be accumulated on a water bottom without diffusion to surroundings and adapted to regenerate dead water or the like which stays on the water bottom of dams, water purification facility for environmental cleaning while the amount of gas to be dissolved into treating water is being adequately controlled. <P>SOLUTION: This gas dissolving device 1 to dissolve gas in a gas mixture solution into a liquid comprises a spiral supply part 3 to supply the mixture solution; a cylindrical water passing part 4 which is successively formed below the spiral supply part 3 to supply the mixture solution and has a falling flow passage with a predetermined length; and an exhaust liquid part 5 to be successively formed below the cylindrical water passing part 4. The spiral supply part 3 separates the gas mixture solution to be supplied from the tangential direction of a cylindrical side wall of the gas dissolving device 1 into liquid which flows spirally in a thin film along the cylindrical side wall thereof, and static pressure gas to concentrate on the central part of the liquid. <P>COPYRIGHT: (C)2004,JPO</p> |
