| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a method for rapidly eliminating a malodor, which is generated from activated sludge, excess sludge, digested sludge, flocculated sludge or the like generated in wastewater or generated at the time of treatment of wastewater, washing water of a washing device or a mixture of them, by a small amount of a chemical liquid fed into an exhaust duct, and developing lasting effect. SOLUTION: The deodorizing method is characterized by a liquid deodorizing process for deodorizing exhaust gas, which contains an offensive smell containing at least one of hydrogen sulfide, mercaptans or the like, by a cationic compound represented by a quaternary ammonium salt type compound or a guanidine compound and aqueous hydrogen peroxide. The treated exhaust is further treated with activated carbon or impregnated charcoal.</p> |
