| 摘要 |
PCT No. PCT/DE86/00185 Sec. 371 Date Jan. 7, 1987 Sec. 102(e) Date Jan. 7, 1987 PCT Filed May 6, 1986 PCT Pub. No. WO86/06712 PCT Pub. Date Nov. 20, 1986.The invention relates to a method for restoring bodies of water by artificial aeration of the deep water (the hypolimnion), whereby the natural stratification of the water is maintained and no compressor is required. A pump draws the deep water in and forces it through an ejector which, in turn, draws air from the atmosphere and mixes it, in the form of finely divided bubbles, with the water. The mixture of water and air is injected into a riser-pipe in which the ascending air-bubbles produces an upwardly directed vertical flow, additional deep water being drawn in through the opening at the bottom of the riser-pipe and being brought into contact with the air-bubbles. At the top, residual air can escape into the atmosphere through the opening at the top of the riser-pipe, or through a degasification link connected thereto, whereas oxygen enriched water can be passed through a downpipe back to the hypolimnion. |
