公开(公告)号：US20190300394A1

公开(公告)日：2019-10-03

申请号：US16288254

申请日：2019-02-28

Applicant: HITACHI, LTD.

Inventor： Hiroki MIYAKAWA ,  Kotaro KITAMURA ,  Masayuki MATSUURA ,  Takanori OSHIKIRI ,  Yusuke OKAWA

IPC: C02F1/44

Abstract: A desalination system includes: a pressurized vessel which generates concentrate water and permeate water by causing treatment target water to pass through a reverse osmosis membrane element built in the pressurized vessel; an energy recovery device which is located on a discharge channel so as to discharge the permeate water, and recovers energy of the permeate water; a bypass discharge channel which branches off from the discharge channel and is located between the pressurized vessel and the energy recovery device, and which discharges the permeate water; and a bypass control mechanism which is located on the bypass discharge channel and controls a discharge volume of the permeate water.

公开(公告)号：US20190336914A1

公开(公告)日：2019-11-07

申请号：US16424121

申请日：2019-05-28

Applicant: HITACHI, LTD.

Inventor： Hiroki MIYAKAWA ,  Kotaro KITAMURA ,  Masayuki MATSUURA ,  Takanori OSHIKIRI ,  Yusuke OKAWA

IPC: B01D61/08 ,  F04F1/18 ,  F04B23/04 ,  B01D61/12 ,  F03B1/02 ,  F01D5/02 ,  C02F1/44 ,  B01D63/12

Abstract: Provided is a reverse osmosis treatment system capable of simultaneously and efficiently recovering energy generated both at brine and permeate sides. The system comprises a branched portion configured to divide second to-be-treated water into third and fourth to-be-treated water; a high-pressure pump configured to pressurize the third to-be-treated water thereby to feed fifth to-be-treated water having a higher pressure than the to-be-treated water before divided; a displacement type of first energy recovery device configured to exchange pressures between the fourth to-be-treated water and brine thus separated by a reverse osmosis treatment device, thereby to produce sixth to-be-treated water having a higher pressure than the fourth one; and a second energy recovery device configured to raise a pressure of the third to-be-treated water located at a downstream side of the branched portion with a pressure of first permeate thus separated by the reverse osmosis treatment device.

公开(公告)号：US20170173534A1

公开(公告)日：2017-06-22

申请号：US15385044

申请日：2016-12-20

Applicant: HITACHI, LTD.

Inventor： Hiroki MIYAKAWA ,  Kotaro KITAMURA ,  Masayuki MATSUURA ,  Takanori OSHIKIRI ,  Yusuke OKAWA

IPC: B01D61/08 ,  F01D5/02 ,  F03B1/02 ,  C02F1/44 ,  F04F1/18

CPC classification number: B01D61/08 ,  B01D61/12 ,  B01D63/12 ,  B01D2311/14 ,  B01D2313/246 ,  B01D2317/022 ,  C02F1/441 ,  C02F2103/08 ,  C02F2209/03 ,  C02F2303/10 ,  F01D5/02 ,  F03B1/02 ,  F04B23/04 ,  F04F1/18 ,  Y02A20/131 ,  Y02E10/223 ,  Y02E10/28 ,  Y02W10/30

Abstract: Provided is a reverse osmosis treatment system capable of simultaneously and efficiently recovering energy generated both at brine and permeate sides. The system comprises a branched portion configured to divide second to-be-treated water into third and fourth to-be-treated water; a high-pressure pump configured to pressurize the third to-be-treated water thereby to feed fifth to-be-treated water having a higher pressure than the to-be-treated water before divided; a displacement type of first energy recovery device configured to exchange pressures between the fourth to-be-treated water and brine thus separated by a reverse osmosis treatment device, thereby to produce sixth to-be-treated water having a higher pressure than the fourth one; and a second energy recovery device configured to raise a pressure of the third to-be-treated water located at a downstream side of the branched portion with a pressure of first permeate thus separated by the reverse osmosis treatment device.

公开(公告)号：US20160346735A1

公开(公告)日：2016-12-01

申请号：US15164990

申请日：2016-05-26

Applicant: Hitachi, Ltd.

Inventor： Kotaro KITAMURA ,  Shinichi YOSHIKAWA ,  Masayuki MATSUURA ,  Takanori OSHIKIRI ,  Yusuke OKAWA

IPC: B01D61/08 ,  B01D61/10 ,  C02F1/44 ,  B01D61/02

CPC classification number: B01D61/08 ,  B01D61/025 ,  B01D61/06 ,  B01D61/10 ,  B01D61/12 ,  B01D2313/243 ,  B01D2313/246 ,  B01D2317/04 ,  B01D2317/06 ,  C02F1/441 ,  C02F2103/08 ,  C02F2201/007 ,  C02F2303/10 ,  Y02A20/131 ,  Y02W10/30

Abstract: Provided is a seawater desalination system including reverse osmosis membrane modules each including: a reverse osmosis membrane; and a pressure vessel installing the reverse osmosis membrane, and configured to obtain permeated water and concentrated water using the reverse osmosis membranes housed in the reverse osmosis membrane modules by supplying seawater to the reverse osmosis membrane modules. The seawater desalination system includes a module group including the reverse osmosis membrane modules connected together in parallel. The seawater is supplied to each of the reverse osmosis membrane modules by being supplied to the module group through first and second seawater supply routes. The first and second seawater supply routes are each provided with a liquid transport pump configured to supply the seawater flowing through the seawater supply route to the module group.

Abstract translation: 提供了一种包括反渗透膜组件的海水淡化系统，每个包括：反渗透膜; 以及安装反渗透膜的压力容器，并且通过向反渗透膜组件供给海水，使用容纳在反渗透膜组件中的反渗透膜来获得渗透水和浓缩水。 海水淡化系统包括并联连接在一起的反渗透膜模块的模块组。 通过第一和第二海水供应路线向每个反渗透膜组件供应海水。 第一和第二海水供应路线分别设置有液体输送泵，其构造成将流过海水供应路线的海水供应到模块组。