| 摘要 |
PURPOSE: A rainwater storage tank is provided to be easily constructed and manufactured, to have excellent corrosion resistance, heat resistance, and water tightness, and to secure a structural stability in comparison with a conventional square type tank. CONSTITUTION: A rainwater storage tank comprises a storage tank main body (A), a rainwater processing unit (B), and an opening/closing plate (C). The storage tank is composed of glass-fiber reinforced plastics (GRP) which use a synthetic resin and a glass fiber, and a longitudinal-circular pipe. The rainwater processing unit is equipped with a settling tank (20), a filter tank (30), and a water storage tank (40). The storage tank is installed with the opening/closing plate on the upper side of the rainwater processing unit to maintain the rainwater processing unit. |
