| 摘要 |
<p>A procedure by which it is possible to improve the ecological conditions in a (thermally or chemically) stratified lake or other water basin especially as regards the oxygen content of its waters at greater depth. The procedure involves the conducting of topwater from the same water body or from another source into the subwater close to the bottom, where it is meant to exert a favourable effect on this deep water"s oxygen content and also on its temperature in the respect that the density of this water is favourable with a view to keeping it at desired depth and, furthermore, preventing e.g. undesirable participation of the sediment"s capillary water in the oxygen economy. The topwater is propelled e.g. through a wide tube by energy derived from an external source, or carried from higher altitude by siphone effect, and baffles may be provided at the discharge point to aid the desired distribution. To the top water being thus conveyed may be adjoined various chemicals or other beneficial agents. </p> |
