JP2000051663A5 - - Google Patents
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- Publication number
- JP2000051663A5 JP2000051663A5 JP1998226898A JP22689898A JP2000051663A5 JP 2000051663 A5 JP2000051663 A5 JP 2000051663A5 JP 1998226898 A JP1998226898 A JP 1998226898A JP 22689898 A JP22689898 A JP 22689898A JP 2000051663 A5 JP2000051663 A5 JP 2000051663A5
- Authority
- JP
- Japan
- Prior art keywords
- reverse osmosis
- osmosis membrane
- module unit
- membrane module
- stage
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 239000012528 membrane Substances 0.000 claims 51
- 238000001223 reverse osmosis Methods 0.000 claims 43
- 238000000926 separation method Methods 0.000 claims 15
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims 15
- 239000012466 permeate Substances 0.000 claims 10
- 239000007788 liquid Substances 0.000 claims 5
- 230000004907 flux Effects 0.000 claims 4
- 239000002455 scale inhibitor Substances 0.000 claims 3
- 238000005374 membrane filtration Methods 0.000 claims 2
- 238000011084 recovery Methods 0.000 claims 2
- 239000008400 supply water Substances 0.000 claims 2
- 102000010637 Aquaporins Human genes 0.000 claims 1
- 108010063290 Aquaporins Proteins 0.000 claims 1
- 239000007864 aqueous solution Substances 0.000 claims 1
- 239000012141 concentrate Substances 0.000 claims 1
- 230000001105 regulatory Effects 0.000 claims 1
- 238000011144 upstream manufacturing Methods 0.000 claims 1
Claims (16)
1.15≦P(n+1)/P(n)≦1.8 The operating pressure "P (n + 1)" of the reverse osmosis membrane module unit of the operating pressure of the reverse osmosis membrane module unit of the "n" th stage as "P (n)", "n + 1" th stage, in the range of below The reverse osmosis membrane separation method according to claim 7, characterized in that:
1.15 ≦ P (n + 1) / P (n) ≦ 1.8
最大濃縮水膜面流速/最小濃縮水膜面流速≦1.5Regarding the membrane surface flow velocity of the concentrated water of the reverse osmosis membrane module unit at each stage, the concentrated membrane surface flow velocity (maximum concentrated water membrane surface velocity) of the reverse osmosis membrane module unit having the largest membrane surface velocity and the smallest membrane surface velocity The reverse osmosis membrane separation according to claim 7 or 8 , wherein the reverse osmosis membrane module unit is operated so that the concentrated water membrane surface flow rate (minimum concentrated water membrane surface flow rate) has the following relationship. Method.
Maximum concentrated water film surface velocity / minimum concentrated water film surface velocity ≦ 1.5
1.0≦第1段目透過流束/最終段透過流束≦1.2Permeation flux at standard conditions per membrane area in the reverse osmosis membrane module unit of the reverse osmosis membrane module unit and the final stage of the first stage, to any of the claims 7-12, characterized in that a relation of the following The method for separating reverse osmosis membrane according to the above.
1.0 ≦ first stage permeation flux / final stage permeation flux ≦ 1.2
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP22689898A JP4187316B2 (en) | 1998-08-11 | 1998-08-11 | Reverse osmosis membrane separation apparatus and reverse osmosis membrane separation method |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP22689898A JP4187316B2 (en) | 1998-08-11 | 1998-08-11 | Reverse osmosis membrane separation apparatus and reverse osmosis membrane separation method |
Publications (3)
Publication Number | Publication Date |
---|---|
JP2000051663A JP2000051663A (en) | 2000-02-22 |
JP2000051663A5 true JP2000051663A5 (en) | 2004-12-16 |
JP4187316B2 JP4187316B2 (en) | 2008-11-26 |
Family
ID=16852328
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP22689898A Expired - Lifetime JP4187316B2 (en) | 1998-08-11 | 1998-08-11 | Reverse osmosis membrane separation apparatus and reverse osmosis membrane separation method |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP4187316B2 (en) |
Families Citing this family (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR100482789B1 (en) * | 2002-10-23 | 2005-04-14 | 웅진코웨이주식회사 | Water purifier having dual prevention structure for general water |
CN103623702B (en) | 2009-05-15 | 2017-08-25 | 株式会社荏原制作所 | Seawater desalination system and energy exchange chamber |
JP5923294B2 (en) | 2011-12-19 | 2016-05-24 | 株式会社日立製作所 | Reverse osmosis processing equipment |
JP5900527B2 (en) | 2014-03-31 | 2016-04-06 | 栗田工業株式会社 | Treatment method for water containing low molecular weight organic substances |
JP2017113652A (en) * | 2015-12-21 | 2017-06-29 | 株式会社日立製作所 | Reverse osmosis treatment system |
WO2017136048A1 (en) * | 2016-02-02 | 2017-08-10 | Trevi Systems Inc. | Osmotic pressure assisted reverse osmosis process and method of using the same |
CN109754889A (en) * | 2017-11-06 | 2019-05-14 | 中广核工程有限公司 | Nuclear power station Spent Radioactive liquid processing device |
CN110526341A (en) * | 2019-10-09 | 2019-12-03 | 佛山市云米电器科技有限公司 | A kind of multimembrane formula reverse osmosis purified water system and water purifier |
JP7044848B1 (en) | 2020-10-14 | 2022-03-30 | 野村マイクロ・サイエンス株式会社 | Liquid treatment equipment, pure water production system and liquid treatment method |
-
1998
- 1998-08-11 JP JP22689898A patent/JP4187316B2/en not_active Expired - Lifetime
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