| 摘要 |
PROBLEM TO BE SOLVED: To provide a device capable of easily removing precipitate sludge.SOLUTION: A device is constituted of a tank body, a slide container being a container which is arranged in the bottom part of the same, which can be drawn from the side surface of the tank, and in which an upper part is opened, and a bottom lid located above the slide container. The upper space of the slide container can be partitioned by the bottom lid while stopping water. |
