| 摘要 |
PURPOSE:To carry out the efficient biological two stage treatment at a high flow speed by constituting the subject method from the first process in which air is allowed to pass in the first deodorizing tower filled with the charging material having a specific composition and the second process in which the gas treated in the first process is mixed with the bad odor gas having a middle or low concentration and allowed to pass in the second deodorizing tower filled with the above-described filling material. CONSTITUTION:The short fiber part of 8 to 27 mesh in a weight ratio or 50% or more which possesses the superior porosity, durability, and water preservation performance is molded and worked to a corrugated from and used as filling material. At this time, the high concentration deodorant gas is allowed to pass at a flow speed of SV 60 to 100l/hr in the first deodorizing tower which is charged with the filling material having an outer surface area per cubic meter of the filling material of 800 square meter or more, and the gas treated in the first deodorizing tower is mixed with the middle or low concentration gas and allowed to pass at a flow speed of 300 to 800l/hr in the second deodorizing tower filled with the above-deseribed filling material. |
