| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide durable and efficient method and apparatus for detoxifying an aqueous solution of a halogen compound, an acidic aqueous solution, or acidic gas. <P>SOLUTION: An aqueous solution containing hydrogen chloride (HCl) in introduced into a dissolving tank 30 that stores massive matter or particulate matter consisting of calcium hydroxide (Ca(OH)<SB>2</SB>) or calcium carbonate (CaCO<SB>3</SB>) to change the aqueous solution containing hydrogen chloride (HCl) to an aqueous solution containing calcium chloride (CaCl<SB>2</SB>) in the dissolving tank 30. The aqueous solution of the halogen compound, the acidic aqueous solution, or the acidic gas is introduced into a sedimentation tank 20 into which the resultant aqueous solution containing calcium chloride (CaCl<SB>2</SB>) is fed to precipitate and take out the aqueous solution of the halogen compound, the acidic aqueous solution, or the acidic gas as a difficultly soluble calcium compound. <P>COPYRIGHT: (C)2004,JPO&NCIPI</p> |
