Hydrogen-dissolved water production apparatus

Details Hydrogen-dissolved water production apparatus Hydrogen-dissolved water production apparatus

2005-04-26

2005-04-26

Smith, Duane (Department: 1724)

Liquid purification or separation

Recirculation

Serially connected distinct treating or storage units

C210S199000, C210S202000, C210S900000

Reexamination Certificate

active

06884344

ABSTRACT:
A degassing device (10), a hydrogen dissolving device (12), and a palladium catalyst column (17) are provided in that order downstream of a high-purity water production device (1), and an impurity removal device (19) is connected to the exit side of treated water of the palladium catalyst column (17). The impurity removal device (19) removes impurity ions which are eluted into the water to be treated or impurity particulates which mix in with the water to be treated during the treatment in the palladium catalyst column (17). The impurity removal device (19) comprises an ion exchange device (20) and a membrane treatment device (21) such as a ultrafiltration membrane device, a reverse osmosis membrane device or the like. By providing an impurity removal device (19) in this manner, it is possible to remove impurities generated during hydrogen peroxide removal treatment by the palladium catalyst and to prevent degradation in quality of hydrogen-dissolved water.

REFERENCES:
patent: 5720869 (1998-02-01), Yamanaka et al.
patent: 6431281 (2002-08-01), McNab et al.
patent: 20020063088 (2002-05-01), Hidaka et al.
patent: 20030094610 (2003-05-01), Aoki et al.

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