| 摘要 |
<p>PURPOSE:To lighten the load of aerobic treatment following a rear step by constituting the title equipment of a regulation tank, a feed pump and a vacuum pump for evacuating the liquid phase part and the vapor phase part of a dissolved gas separator by an osmotic gasification membrane method which are provided in series in the passage of anaerobically treated water. CONSTITUTION:The anaerobically treated water sent from an anaerobic reactor 1 is stored in a regulation tank 2 and quantitatively supplied to a dissolved gas separator 4 by a feed pump 3. The vapor phase chamber of the separator 4 is sucked at negative pressure by a vacuum pump 6. At this time, sulfide dissolved in the anaerobically treated water in the liquid phase chamber is osmosed and gasified as hydrogen sulfide together with the other gas and steam into the vapor phase chamber via an osmotic gasification membrane. The steam in the vapor phase chamber is separated by a gas/steam separator 5 and discharged to the outside of the equipment as drain. On the other hand, the anaerobically treated water separated from dissolved gas by the dissolved gas separator 4 is discharged to an aerobic treatment equipment and aerobically treated or returned to the regulation tank 2 through a pipe 9 for circulation and the dissolved gas is reseparated.</p> |
