| 摘要 |
<p>PURPOSE:To purify efficiently water in a closed water basin by providing a water duct for spouting water under the water surface in the closed water basin at high speed and a nozzle tube having a spout at one end and a suction port at the other end and whose one end port is opened in the spout. CONSTITUTION:As the pressure in a nozzle tube 7 is reduced by the high-speed flow generated by the water spouted from the nozzle-shaped leading end 6a of a water duct 6, the water in the vicinity of the water bottom 3a in a lake or a marsh 3 is sucked into the nozzle tube 7 from a suction port 7b at the other end of the nozzle tube 7, and spouted into the lake 3 in the vicinity of the water surface from a horizontal spout 7a at one end of the nozzle tube. The water is circulated as shown by the arrows. Since the water in the lake 3 is circulated from the bottom to the surface in this way, the corruption of water is eliminated. Accordingly, the water is utilized as domestic water, and also used for the culture of fishes and shellfishes without hindrance.</p> |
