REMOVAL APPARATUS OF NON-POINT SOURCE POLLUTANTS FOR RAINWATER DRAIN DITCH

摘要

A removal apparatus of non-point source pollution for a rainwater drainage ditch is provided to remove pollutants on a road surface together with initial rainwater and reduce a facility cost for preventing contamination of rivers and removing the non-point source pollution accordingly. In a drainage equipment comprising a road surface drainage ditch(410) installed at a road side and a rainwater drainage ditch(100) connected to the road surface drainage ditch and a river so as to drain rainwater on a road surface, a removal apparatus of non-point source pollution for the rainwater drainage ditch includes: a partition plate(200) installed in the rainwater drainage ditch; and a filter mesh(210) and a filtration filter unit(220) installed between a bottom side of the partition plate and a bottom surface(110) of the rainwater drainage ditch to drain simultaneously initial rainwater flowing down the bottom surface of the rainwater drainage ditch through the road surface drainage ditch in a state that the initial rainwater is filtered by the filter mesh and the filtration filter unit and discharge the rainwater over the partition plate after filling the rainwater between the partition plate and the bottom surface of the rainwater drainage ditch when rainwater flows in an amount exceeding the filtration capacity.