| 摘要 |
<p>PURPOSE:To effectively remove volatile organic compd. and to prevent environmental pollution by subjecting exhaust gas discharged from the stripping of water contg. volatile organic chlorine compd. to adsorption treatment and irradiating both a sterilization beam and an ozone generation beam to regenerated exhaust gas of an adsorbent and thereafter resubjecting the gas to adsorption treatment. CONSTITUTION:Raw water 1 contg. volatile organic chlorine compd. such as trichloroethylene is treated by stripping air 5 in a packed tower 3 and discharged exhaust gas 7 is introduced into an adsorption tower 8 to adsorb volatile organic chlorine compd. contained in exhaust gas 7, and the treatment gas 9 made harmless is discharged to the atmosphere. When an adsorbent is saturated, the stripping air 5 is branched and passed through the adsorption tower 8 as gas 11 for regeneration via a heater 10 to desorb adsorbed components. After introducing the regenerated exhaust gas 12 into an ultraviolet rays irradiation device 13 and irradiating both ultraviolet rays of the sterilization beam and the ozone generation beam to decompose a harmful component such as volatile organic chlorine compd., the regenerated exhaust gas 12' wherein a nondecomposed component partially remains is reintroduced into the regenerated adsorption tower 8 and made harmless.</p> |
