| 摘要 |
PURPOSE:To provide a method of treating a water.bloom in a lake, a swamp and a pond intended for the simplification of water.bloom dehydration and separation with high efficiency and at a low cost by first heating the water-bloom collected from a pond water making it dead temporarily or completely, and dehydrating and separating the water-bloom. CONSTITUTION:Water to be treated containing water-bloom which is collected from a lake, a swamp or a pond is conducted into a mixing tank 1, then an aluminum coagulant is charged from constant volume feeder 2, then the water and the coagulant are stirred and mixed using a stirrer 3. After coagulation, the mixture is introduced into a pressure sedimentation tank 4. After that, a top purified water is returned to a lake, a swamp or a pond, and the sedimented water-bloom is guided into a pressure sedimentation tank 6, and further, separated from water. The top purified water is returned to a lake, a swamp or a pond. On the other hand, the concentrated water- bloom are introduced into a heater 7 to be heated at a specified temperature for a specified length of time. Thus, the water-bloom is rendered dead temporarily or completely and are reduced to a solid granulation and water. Finally the solidified water-bloom is collected in a dry condition and the separated drainage is sent to the mixing tank 1. |
