| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a biological deodorization device in which excellent capacity of removing decomposition retardant malodorous substances can be continued over a long period of time and moreover, a pressure loss is not caused. SOLUTION: In this biological deodorization device, a polymer microorganism carrier bed 13 consisting of a large particle size microorganism carrier bed 11 of 400 mm thickness packed with a carrier 11a of large particle size in which hydrogen sulfide deodorizing bacteria are seeded and a small particle size part biological carrier bed 12 packed with a carrier 12b of small particle size is installed in a first bed 1 into which malodorous gas containing malodorous substances flows by making the large particle size microorganism carrier bed 11 the gas inflow side and small particle size part biological carrier beds 21, 31 packed with carriers 21b, 31b of small particle size in which bacteria for deodorizing decomposition retardant malodorous substances such as methyl mercaptan are seeded are installed in a second bed 2 and the succeeding parts. In this way, even when hydrogen sulfide is decomposed to deposit sulfur, the polymer microorganism carrier bed 13 is not clogged and the hydrogen sulfide can be decomposed in high efficiency with small particle size part biological carrier bed 12 of the polymer microorganism carrier bed 13 and the decomposition retardant malodorous substance can be decomposed with the second bed 2 and the succeeding parts respectively.</p> |
