| 摘要 |
PURPOSE:To sterilize effectively by passing a soln. contg. hydrogen peroxide, cooling the soln., then bringing the soln. into contact with activated carbon, and further irradiating ultraviolet rays. CONSTITUTION:The water in a water storage tank is heated to >=80 deg.C, and hydrogen peroxide is introduced into the water storage tank 4 from a hydrogen peroxide storage tank 8. The water and the hydrogen peroxide are mixed in the water storage tank 4 to obtain a mixture contg. >=0.5wt% hydrogen peroxide. The mixture is passed through a cartridge filter 5 and a ultrafiltration module 6, and returned to the water storage tank 4 through pipelines 10 and 11. The water is circulated, cooled by a heat exchanger 7, and introduced into an activated-carbon adsorption tower 1 through a pipeline 12 to decompose the remaining hydrogen peroxide. The whole passed liquid is introduced into the water storage tank 4 through pipelines 14 and 11, and ultraviolet rays are irradiated to decompose the remaining hydrogen peroxide. |
