| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a biological deodorizing apparatus using lightweight packed beds having a significant microorganism sticking and carrying effect and a significant malodorous component removing effect and free of increase of pressure drop due to sprinkling of washing water. SOLUTION: In the biological deodorizing apparatus 1 with a malodorous gas feed pipe 2 at the bottom, a treated gas discharge pipe 8 at the top and packed beds 3, 4 carrying microorganisms which degrade the malodorous components of malodorous gas within the apparatus, the packed beds are formed of a packing material obtained by coating the surfaces of porous resin moldings with an acetalized product of polyvinyl alcohol and the porous resin moldings are foamed moldings of polyurethane, polystyrene, polypropylene, polyethylene or polyacetal and preferably have an open cell structure in which the inlet and outlet of each cell are open at different portions of the surface of the resin.</p> |
