| 摘要 |
<p>PROBLEM TO BE SOLVED: To prevent the putrefaction of living drainage and the generation of dirt and clogging of a catchment valve and to miniaturize an apparatus by installing diffusion tubes in a catchment valve and ejecting bubbles into retained living drainage. SOLUTION: Diffusion tubes 7 are installed on the bottom side of a drainage catchment valve 3 and connected to an air pump. Air supplied from the pump is ejected upward from each diffusion tube 7 as bubbles. In this way, in living drainage which is introduced into the valve 3 and retained temporarily, the propagation of bacteria is prevented by the bubbles. Accordingly, the generation of offensive odors from the valve 3 can be prevented. Moreover, convection are circulation are generated in the valve 3, preventing the adhesion of dirt to the inner wall etc., and the clogging of the valve 3.</p> |
