Natural eco-friendly method that cleans contaminated river water naturally by first discharging clean river water with heavy gravity while restoring the natural ecosystem by using automatic water purifier

摘要

The present invention relates to an environmentally friendly method for naturally purifying polluted river water by primarily discharging clean river water having a great specific gravity and restoring an ecosystem using automatic a fishway functioning as a water purifier The present invention as an environmentally friendly method for purifying polluted river water by forming a natural fishway to maintain a full water level inside a floodgate; and to subserve the breeding activities of creatures including fishes which aim to move to the upstream of a river for breeding activities by opening the bottom of the floodgate and forming a fishway at all times.