| 摘要 |
PURPOSE: A sewer box in which a sludge dredging facilitates is provided to prevent the inflow of sludge, included in sewage, into river. CONSTITUTION: A sewer box in which a sludge dredging facilitates comprises a box, a sludge hanging projection(120) and a manhole(130). A flow passage(112) in which the sewage flows is formed on the box. The sludge hanging projection is installed in the floor side of the box. The sludge hanging projection blocks the flow of the sludge included in sewage. The manhole covers up a discharge port. The discharge hole is located on the upper side of the box. |
