Patent ID: 7377959
Filing Date: 2008-05-27
Classification: B01D,Y02A

Abstract:
1. A process for treating a volatile chlorinated organic compound in which a volatile chlorinated organic compound contained in a medium is decomposed in presence of chlorine by irradiation with light, comprising: a collection step of passing a medium containing a volatile chlorinated organic compound through an adsorber filled with an adsorbent for adsorbing the volatile chlorinated organic compound to collect the volatile chlorinated organic compound in the adsorber; a desorption step of bringing a gas containing at least water vapor into contact with the adsorbent in the adsorber to desorb the volatile chlorinated organic compound from the adsorber with the collected volatile chlorinated organic compound; a condensation step of discharging, from the adsorber, a gas containing the water vapor and the volatile chlorinated organic compound produced in the desorption step, and subsequently cooling the gas to obtain a condensate containing the volatile chlorinated organic compound and water; a vaporization step of vaporizing the volatile chlorinated organic compound from the condensate; a decomposition step of mixing the gas containing the volatile chlorinated organic compound produced in the vaporization step with chlorine gas, and irradiating the gas mixture with light to decompose the volatile chlorinated organic compound in the gas mixture; and a decomposed product treatment step of carrying out decomposition treatment of a decomposed product of the volatile chlorinated organic compound generated in the volatile chlorinated organic compound decomposition step.