| 摘要 |
<p>PROBLEM TO BE SOLVED: To dilute the concentration of odor in a odorous gas to reduce the odor by sucking the odorous gas generated in a reaction vessel into a deodorizing device to deodorize, returning it into the reaction vessel for use in the aeration in the reaction vessel. SOLUTION: In a treating device 1, a sucking and refluxing device including a suction device such as a blower for sucking the generated gas, which is generated in the reaction vessel 10 and contains the odor, from the upper part wall 11 to return it to an air diffusion device 22 of the reaction vessel 10 and an air diffusion device 38 of an aeration treating vessel 30 is arranged. A deodorizing device and a flow rate control valve are arranged in the middle way of a suction passage for the suction refluxing device, the odorous gas generated in the reaction vessel is deodorized by the deodorizing device to dilute the concentration of the odor. By sucking the generated gas in the reaction vessel 10 and supplying it to the air diffusion devices 22, 38 after deodorizing in this way, the leak of the odor from the reaction vessel 10 is prevented and efficiency of the aerobic fermentation in the aeration treatment is improved.</p> |
