Title:
【発明の名称】水性二酸化塩素の製造方法および製造装置
Document Type and Number:
Japanese Patent JP2000505037
Kind Code:
A
Abstract:
A method of forming an aqueous chlorine dioxide solution is disclosed which includes reacting in a reaction vessel an acid reaction solution containing a hydroxy carboxylic acid and a companion acid with an alkali metal salt of a chlorite ion. In accordance with the process, the hydroxy carboxylic acid serves to temporarily transfer chlorine from and does not form a salt with the alkali metal salt of a chlorite ion. The aqueous chlorine dioxide solution produced is substantially free of chlorous acid and preferably is free of other by-products such as sodium chloride and free chlorine. The method further includes maintaining the reaction vessel at a pH of less than 5 and/or withdrawing at least a portion of the chlorine dioxide from the aqueous chlorine dioxide solution. The method enables rapid, efficient, compact and safe generation of chlorine dioxide. A method of disinfecting water, and apparatus for making chlorine dioxide and for disinfecting water also are provided.
Inventors:
Lee, Sung Yu
Application Number:
JP53020997A
Publication Date:
April 25, 2000
Filing Date:
February 21, 1997
Export Citation:
Assignee:
Water Technologies Limited
International Classes:
C01B11/02; C02F1/68; C02F1/76; (IPC1-7): C01B11/02
Attorney, Agent or Firm:
Yusuke Hiraki (1 person outside)