| 摘要 |
<p>PURPOSE: Provided is a gaseous chlorinated organic compound decomposing method by using chlorine gas while restraining the emission of the gaseous chlorinated organic compound to the environment. CONSTITUTION: A means for producing a chlorine-containing air(11) comprises a water tank for storing a chlorine-containing solution, a pipe(13) for blowing an air to the solution, and a valve for adjusting the amount of the air. The air passed through the chlorine-containing liquid contains the chlorine gas and is sent to a reaction vessel(5). In the reaction vessel, the substance to be degraded is mixed with the chlorine gas-containing air. The mixed gases are irradiated with light for a predetermined time by a light irradiating means(4), whereby the substance is degraded. After the degradation, the gases are discharged via an exhaust pipe(6). As the chlorine solution is the water tank, there is used a solution having a hydrogen ion concentration (pH value) of 1 to 4 and a residual chlorine concentration of 5 to 150 mg/L. Such a solution can be obtained by dissolving a hypochlorite such as sodium hypochlorite and potassium hypochlorite in water. If the solution contains an inorganic acid and the chlorine gas can be effectively produced.</p> |
