Water treatment device and water treatment method

Patent metadata

Field	Value
Publication number	US-11492275-B2
Application number	US-202017095255-A
Country	US
Kind code	B2
Filing date	Nov 11, 2020
Priority date	Nov 15, 2019
Publication date	Nov 8, 2022
Grant date	Nov 8, 2022

Abstract

A water treatment device includes: a water electrolyzer configured to produce oxygen gas by electrolyzing water; a pressurization mechanism pressurizing raw water by being supplied with the oxygen gas produced in the water electrolyzer; and a processor to which the raw water pressurized by the pressurization mechanism is supplied, the processor including a reverse osmosis membrane.

First claim

What is claimed is:

1. A water treatment device, comprising:
a water electrolyzer configured to electrolyze an electrolytic solution, the water electrolyzer comprising an oxygen outlet supplying oxygen gas produced therein;
pressurizer coupled with the oxygen outlet, the pressurizer being configured to pressurize water by utilizing a pressure of the oxygen gas and comprising a pressurized water outlet supplying pressurized water; and
filter coupled with the pressurized water outlet comprising a reverse osmosis membrane and a treated water outlet, the filter being configured to supply treated water that passed through the reverse osmosis membrane from the treated water outlet.

2. The water treatment device according to claim 1 , wherein
the pressurizer includes a tank.

3. The water treatment device according to claim 1 , wherein
the treated at outlet is coupled with the water electrolyzer.

4. The water treatment device according to claim 1 , wherein
the electrolyzer further comprises a hydrogen outlet supplying hydrogen gas produced therein
the water treatment device further comprising:
a generator configured to generate electrical power the generator utilizing the hydrogen gas supplied from the hydrogen outlet.

5. The water treatment device according to claim 4 , further comprising:
a booster pressurizing the raw water, the booster being driven by the electrical power.

6. The water treatment device according to claim 4 , wherein
the electrical power is configured to be supplied to the water electrolyzer.

7. The water treatment device according to claim 1 , further comprising:
a pressure release coupled with the oxygen outlet,
the release being configured to release the oxygen gas therefrom at a predetermined pressure.

8. A water treatment method, comprising:
producing a gas by electrolyzing an electrolytic solution;
pressurizing raw water by utilizing a pressure of the gas and obtaining pressurized water; and
passing the pressurized water through a filter comprising a reverse osmosis membrane and obtaining treated water.

Assignees

• Toshiba Kk

Inventors

• Murayama Hirotoshi

Classifications

• C02F2201/4612

  Controlling or monitoring · CPC title

• Y02E60/36

  Hydrogen production from non-carbon containing sources, e.g. by water electrolysis · CPC title

• C02F2103/08

  Seawater, e.g. for desalination · CPC title

• C02F1/4676 Primary

  by electroreduction · CPC title

• C02F1/441 Primary

  by reverse osmosis · CPC title