| 摘要 |
PURPOSE: A trap for rainwater and sewage is provided to prevent harmful insects from growing in the sewage and to prevent the sewage from being seen. CONSTITUTION: A trap for rainwater and sewage comprises a sump tank(1), and one or more overflow pipes(2). The sump tank is installed on the lower part of a cover. The sump tank collects water flowing in through a water hole on the cover. One or more overflow pipes are installed on the bottom of the sump tank. One or more overflow pipes comprise water staying units. |
