| 摘要 |
<p>PURPOSE:To easily remove a small quantity of organic matter in air by irradiat ing gas with ultraviolet rays and thereafter rendering organic matter in the gas to an absorption/removal processing by an adsorbent and to a water flush ing. CONSTITUTION:Gas in air and the like is irradiated with ultraviolet rays, and thereafter organic matter in the gas is removed by an adsorbent such as activated charcoal and zeolite, etc., or flushed water. For example, air, which passes through an UV irradiation device when a lamp of the device is turned on and off, is collected in a bubbling vessel 2 through pure water bubbling for about 24 hours. Concentration of total organic carbon (TOC) in the water is measured. Separately, air is collected in the bubbling vessel 2 through pure water bubbling as a blank, which is then measured in its TOC concentration. It is judged from a comparison of the TOC concentrations that a more increase of the TOC concentration of the former than that of the latter originates from a fact that part of the organic matter in the air is changed to a form easy to be dissolved. Hereby, organic matter in air is made easily dissolvable in water and hence is made easily removable.</p> |
