| 摘要 |
PURPOSE: An underground water processing system of rainwater and a construction method thereof are provided to reduce contamination of a river due to non-point contaminant and to reuse rainwater flowing after initial rainwater by penetrating the rainwater to the underground. CONSTITUTION: An underground water processing system(100) of rainwater comprises a manhole(110), a sewage pipe(120), a buoyancy gate(130), a filtration unit(140), and a rainwater pipe(150). A sewage installation hole, a filtration installation hole, a rainwater installation hole are separately formed on the manhole. The sewage pipe is installed on the sewage installation hole and drains the initial rainwater including a non-point contaminant to a sewage treatment plant. The buoyancy gate opens the sewage pipe according to a water level of the rainwater. The rainwater pipe flows in the manhole and discharges the rainwater to the upper part of the filtration unit. |
