| 摘要 |
<p>PURPOSE: A rainwater treatment device is provided to process initial rainwater efficiently with good water discharging effects in case a rainwater level rises in a short term due to heavy rain, and to secure enough filtering efficiency of the rainwater. CONSTITUTION: A rainwater treatment device include a cylindrical separation member(10), a case, and a filtering medium(30). The cylindrical separation member separates initial rainwater. The case filters the rainwater passed through the separation member. The filtering medium is installed inside the case. The separation member consists of the bottom surface, a sidewall part and a flange part. The case is formed to a square shape, and includes an opening part(21). A plurality of through-holes(22) are formed on the case except for the opening part.</p> |
