Title:
淡水精製装置
Document Type and Number:
Japanese Patent JP5537528
Kind Code:
B2
Abstract:
[Problem] To provide a device for purifying fresh water after absorption of water in a more semi-hyperosmotic solution for hyperosmosis than sea water using a forward osmosis membrane with sea water as the raw water. Also to be able to inhibit deposition of solids (ammonium carbamate) arising from NH3 and CO2 generated in the fresh water purification process, to separate this gas from the semi-hyperosmotic solution by a separation means, and reduce the device scale by making re-dissolving of the gas by a re-dissolving means more efficient. [Solution] A separation means (3) for a solute in the fresh water purification process has a plurality of recovery openings (4, 5) that recover solute components in a semi-hyperosmotic solution as a mixed gas and a carrier gas supply opening (6) and pump (10) that supply a carrier gas to the separation means (3). The gas recovered by the separation means (3) is re-dissolved in a re-dissolving means (14). Deposition of solids arising from NH3 and CO2 can be suppressed by a constitution that supplies gas supplied by the recovery openings (4, 5) to the re-dissolving means (14) from infusion openings (12, 13) that differ, respectively, along with the carrier gas.
Inventors:
Hiroto Yokoi
Koji Yinyama
Yutaka Sannomiya
Hideyuki Tadokoro
Takahiro Tate
Koji Yinyama
Yutaka Sannomiya
Hideyuki Tadokoro
Takahiro Tate
Application Number:
JP2011211788A
Publication Date:
July 02, 2014
Filing Date:
September 28, 2011
Export Citation:
Assignee:
株式会社日立製作所
International Classes:
C02F1/44; B01D61/00; C02F1/20
Domestic Patent References:
| JP2011083663A | ||||
| JP2003290774A | ||||
| JP2011525147A |
Attorney, Agent or Firm:
Manabu Inoue
Yuji Toda
Shigemi Iwasaki
Yuji Toda
Shigemi Iwasaki