Purifying equipment for making freshwater from river water by fitering river using a natural river bed

摘要

PURPOSE: A river purifying facility of natural purification is provided to largely reduce installation cost and lengthen lifetime of the purifying facility. CONSTITUTION: A river purifying facility of natural purification comprises: a water permeable compartment wall(10) which is installed by fixation pile(11); a filtering stone layer(20) which makes river water contacts the stone layer and pass through; a coating stone layer(30) installed to protect boundary surface and upper surface of the filtering stone layer by covering with protection stone material(31).