| 摘要 |
<p>The present invention relates to a method for improving a water quality using a multi-staged water storing device which has a water gate opened and closed automatically in order to purifiy contaminated water naturally. More specifically, the present invention relates the water storing device of the multi-stage which is installed in an underwater dam or irrigation canal of the river so as to maintain a stored water level within a certain extent, and also constructed along a water level of a river using a lower discharge type water gate which opened and closed automatically so as to purify contaminated naturally. The present invention is characterized in that the nulti-staged and low discharge type water storing device (1) is constructed to block the river across an entire width thereof along a water level of an upper and lower stream of a river, or at each point of 50 % - 70 % or certain value of the stored water level, so that the level of the stored water is maintained in a certain extent continuously, and water is pufified and the water quality is improved each time water passes through every water string device by stages.</p> |
