| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a wastewater sterilization system that can reduce heating energy and the amount of water used and moreover prevent a leakage of a pollution source contained in air when carrying out evacuation. <P>SOLUTION: Wastewater Wd in a drain tank 10 is evacuated and led into a sealed tank 13, and then the wastewater in the sealed tank 13 is maintained to high temperature and high pressure and sterilized. A water seal type vacuum pump 20 is connected to the sealed tank 13, and a storage tank 15 is connected to the sealed tank 13 through a drain line 14. A wastewater heating heat exchanger 24 exchanging heat between treated water Wt after sterilization treatment and the wastewater Wd in the drain tank 10 is connected to the drain line 14, and a treated water circulation line 21 supplying and circulating the treated water Wt in the storage tank 15 to the water seal type vacuum pump 20 is connected to the storage tank 15. <P>COPYRIGHT: (C)2012,JPO&INPIT</p> |
