| 摘要 |
<P>PROBLEM TO BE SOLVED: To prevent lowering of neutralization function and draining function of drain. <P>SOLUTION: A neutralization vessel (2) for neutralizing the drain (4) includes a vessel part (6) which is packed with a neutralization agent (Kansuiseki 20) and receives the drain, and a drain filtering part (8) which is inserted into the neutralization agent and makes the drain pass. The drain filtering part has a case (46) which forms a space part (34), separated from the neutralization agent, in the vessel, a plurality of water-permeating hole part (36) which is formed in the case and makes the drain pass, and a ventilation hole part (60) which makes the space part of the case open to the atmosphere. <P>COPYRIGHT: (C)2012,JPO&INPIT |
