| 摘要 |
<p>PURPOSE:To remove effectively and economically reducing sulfur compds. by pretreating a waste gas contg. the reducing sulfur compds. with a washing liquid contg. activated sludge to remove the other components, and then bringing the gas into contact with an aq. soln. of an oxidizing agent. CONSTITUTION:The waste gas 11 to be treated contg. reducing sulfur compds. such as H2S and CH3SH as odorous components is sent into a washing tower 12, and brought into contact with a circulating washing water 13 contg. activated sludge to absorb and remove odorous components (fatty acids, amines, etc.) other than the reducing sulfur compds. in the waste gas. The gas pretreated in the washing tower 12 is introduced into the second tower 15, and brought into contact with a circulating water 18 contg. an oxidizing agent such as NaClO to oxidize and decompose the remaining components, or the reducig sulfur compds. The deodorized waste gas 22 is discharged into the outside of the system.</p> |
