PURPOSE: An eco-friendly construction method to purify polluted river water naturally by using a floodgate system in which plenty of water is discharged is provided to purify the polluted river water naturally by discharging water stored in the floodgate with polluted materials, such as deposit sludge.;CONSTITUTION: An eco-friendly construction method to purify polluted river water naturally by using a floodgate system in which plenty of water is discharged is as follows. An actuating link in between both upper parts of the floodgate and both support structures is connected with an actuating cylinder. A waterway is closed and opened by conducting or opening the floodgate according to contraction movement of the each actuating cylinder. A discharge passage is formed between the bottom part of the floodgate and a floor part by lifting the floodgate by a guide projection. Clean river water which has a big specific gravity is preferentially discharged through the discharge passage in state the floodgate is closed.;COPYRIGHT KIPO 2010
展开▼
