| 摘要 |
<p>PURPOSE:To improve the treatment efficiency, etc., by using an ejector for ejecting water containing a large quantity of dissolved oxygen from a nozzle, for an aeration method by a biological treatment of sewage, and also, using jointly not only an intake method from an ejector installed position but also a treatment by a combination of a flow. CONSTITUTION:An operating part 2 of an ejector hose 1 being elastically deformable is arranged in an action area in the water W, and also, on its tip side, a nozzle 3 and a jet nozzle 15 are provided. On the other hand, the base end side of the ejector hose 1 is supported by a holding part 5 and a fixing part 4, and also, connected through a valve 7 to a pump 6 and a compressor 8, respectively. In such a state, pressurized air and pressurized water are subjected to press fitting to the inside of the ejector hose 1, and water containing a large quantity of dissolved oxygen is injected into the water W from the nozzle 3. That is, by utilizing an aeration method by a biological treatment of sewage, a treatment effect of sewage is improved. Also, a treatment structure by not only an intake method from the ejector installed position but also a combination of a flow is constituted. Moreover, a pumice stone is used as a contact material.</p> |
