Title:
純水製造方法及び装置
Document Type and Number:
Japanese Patent JP5750236
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To improve efficiency in the decomposition of organic substances, miniaturize a circulation type pure water-producing device, achieve high-speed processing and reduce a running cost even in case that pure water whose TOC (total organic carbon) concentration is extremely low is produced by using the pure water-producing device concerned.SOLUTION: A pure water-producing method includes at least: an irradiation step in which water to be treated, whose TOC is 10 ppb or below, is irradiated with ultraviolet rays; and a step in which hydrogen peroxide, which is contained in the water to be treated after the irradiation step, is removed; to produce pure water. In this case, the pure water, whose amount exceeds its use amount at a use point, is circulated, at least as part of the water to be treated, to the irradiation step. Further, a step, in which hydrogen peroxide is added to the water to be treated, is additionally provided prior to the irradiation step.
Inventors:
Murayama Masami
Takahashi Ichie
Hiroshi Sugawara
Takahashi Ichie
Hiroshi Sugawara
Application Number:
JP2010119174A
Publication Date:
July 15, 2015
Filing Date:
May 25, 2010
Export Citation:
Assignee:
Organo Corporation
International Classes:
C02F1/72; B01F1/00; C02F1/32; C02F1/42; C02F1/70; C02F9/00
Domestic Patent References:
| JP2002210494A | ||||
| JP2008136914A | ||||
| JP2010017633A | ||||
| JP2010069460A |
Foreign References:
| WO2009122884A1 | ||||
| WO2009082008A1 |
Attorney, Agent or Firm:
Akio Miyazaki
Masaaki Ogata
Masaaki Ogata