Title:
WATER SOFTENER
Document Type and Number:
Japanese Patent JP2023037102
Kind Code:
A
Abstract:
To provide a water softener which enables quick shift to water softening treatment from regeneration treatment, and efficient water softening.SOLUTION: A water softener 1 includes: a plurality of water softening tanks 3 for softening raw water containing a hardness component by a weakly acidic cation-exchange resin 7; a plurality of neutralization tanks 4 for neutralizing a pH of soft water circulating in the water softening tanks 3 by a weakly basic anion-exchange resin 8; and an electric cell 9 for generating acidic electrolytic water for regenerating the weakly acidic cation-exchange resin 7 of the water softening tanks 3, and alkaline electrolytic water for regenerating the weakly basic anion-exchange resin 8 of the neutralization tanks 4. The water softening treatment makes the water softening tanks 3 and the neutralization tanks 4 alternately communicate and connect with each other, and softens the raw water. The regeneration treatment regenerates the water softening tanks 3 and the neutralization tanks 4 by first regeneration treatment of regenerating the water softening tanks 3, and the neutralization tanks 4 excluding the neutralization tank 4 in the last stage, and second regeneration treatment of regenerating the water softening tanks 3, and the neutralization tanks 4 including the neutralization tank 4 in the last stage.SELECTED DRAWING: Figure 1
Inventors:
ISHIKAWA DAIKI
MURASE HIROKI
MURASE HIROKI
Application Number:
JP2021143636A
Publication Date:
March 15, 2023
Filing Date:
September 03, 2021
Export Citation:
Assignee:
PANASONIC IP MAN CORP
International Classes:
C02F1/42; B01J39/07; B01J39/18; B01J41/07; B01J41/12; B01J47/028; B01J49/06; B01J49/07; B01J49/53; B01J49/57; B01J49/75; C02F1/461
Attorney, Agent or Firm:
Kenji Kamata
Kenji Maeda
Kenji Maeda