NONPOINT POLLUTION REDUCING SYSTEM

摘要

PURPOSE: A nonpoint pollution reducing system is provided to permeate purified rain water into the ground and maximize a purifying effect with respect to the rain water. CONSTITUTION: A rainwater purifying module case(100) includes a lower frame, a precipitating bath, and a filtration supporting net. The filtration supporting net is arranged at the interface of the lower frame and the precipitating bath. A planting media layer(200) is filled in the upper frame of the rainwater purifying module case. A filtration media layer(300) is filled in the lower frame of the rainwater purifying module case. An assembly filtration media layer(330), a granule filtration media layer(320), and fine-grain filtration media layer(310) are successively stacked. An assembly permeable layer(400) is formed at the lower side of the rainwater purifying module case.