| 摘要 |
<p>PROBLEM TO BE SOLVED: To prevent the pollution of the water of lakes and swamp by simplifying the installation work of the water suction pipe of a water purifying device for the eutrophicated lakes and swamp. SOLUTION: This device is constituted to purify the water of the lakes and swamp by embedding the water suction pipe 3 into the bottom 2 of the lakes and swamp, connecting the end of the water suction pipe 3 to the inlet of a drain pump and opening the outlet of this drain pump into the water of the lakes and swamp, then circulating the water of the lakes and swamp by the drain pump. In such a case, the water suction pipe 3 is embedded into the soil of the lake bottom 2 by plunging the pipe therein. Water suction ports 3a are formed on the four ways of the embedded outer peripheral surface. In addition, thin vane plates 3b are radially fixed between the adjacent water suction ports 3a. The water suction pipe 3 and the vane plates 3b are coated with thin water introducing cloth 3c which prohibits the passage of the soil and sand grains having high water permeability and constituting the soil. The circulating circuit for the water of the water purifying device is formed simply by driving the water suction pipe 3 into the lake bottom 2 without adding any modification thereto.</p> |
