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JPS5469579A - Separating method for solution - Google Patents

Separating method for solution

Info

Publication number
JPS5469579A
JPS5469579A JP13749077A JP13749077A JPS5469579A JP S5469579 A JPS5469579 A JP S5469579A JP 13749077 A JP13749077 A JP 13749077A JP 13749077 A JP13749077 A JP 13749077A JP S5469579 A JPS5469579 A JP S5469579A
Authority
JP
Japan
Prior art keywords
soln
semipermeable membrane
separators
multistage
order
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.)
Pending
Application number
JP13749077A
Other languages
Japanese (ja)
Inventor
Sumio Takadono
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nitto Denko Corp
Original Assignee
Nitto Electric Industrial Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Nitto Electric Industrial Co Ltd filed Critical Nitto Electric Industrial Co Ltd
Priority to JP13749077A priority Critical patent/JPS5469579A/en
Publication of JPS5469579A publication Critical patent/JPS5469579A/en
Pending legal-status Critical Current

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  • Separation Using Semi-Permeable Membranes (AREA)

Abstract

PURPOSE: To prevent breakage of a semipermeable membrane in treatment of a soln. by use of the semipermeable membrane, by controlling pH in combination with multistage separation or circulating separation of the soln. in order to maintain the pH on the whole at a prescribed value.
CONSTITUTION: In concentration of a soln. by reverse osmosis or ultrafiltration by use of a semipermeable membrane made of cellulose acetate, polyamide etc., the soln. passes through multistage separators for the soln. To the soln. between the separators adjoining each other is added acid or alkali in order to adjust the pH of the soln. to a range suitable for the semipermeable membrane.
COPYRIGHT: (C)1979,JPO&Japio
JP13749077A 1977-11-15 1977-11-15 Separating method for solution Pending JPS5469579A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP13749077A JPS5469579A (en) 1977-11-15 1977-11-15 Separating method for solution

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP13749077A JPS5469579A (en) 1977-11-15 1977-11-15 Separating method for solution

Publications (1)

Publication Number Publication Date
JPS5469579A true JPS5469579A (en) 1979-06-04

Family

ID=15199856

Family Applications (1)

Application Number Title Priority Date Filing Date
JP13749077A Pending JPS5469579A (en) 1977-11-15 1977-11-15 Separating method for solution

Country Status (1)

Country Link
JP (1) JPS5469579A (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4416700A (en) * 1981-07-20 1983-11-22 The Coca Cola Company Process for treating caramel colors
JPS614591A (en) * 1984-06-04 1986-01-10 アローヘツド、インダストリアル、ウオーター、インコーポレイテツド Reverse osmosis system
JPH0675569A (en) * 1992-08-11 1994-03-18 Yamaha Corp Electronic keyed musical instrument
US5925255A (en) * 1997-03-01 1999-07-20 Mukhopadhyay; Debasish Method and apparatus for high efficiency reverse osmosis operation
US6306197B1 (en) 2000-04-19 2001-10-23 Seh America, Inc. Isopropyl alcohol scrubbing system
US8617398B2 (en) 1996-08-12 2013-12-31 Debasish Mukhopadhyay Method for high efficiency reverse osmosis operation
US8758720B2 (en) 1996-08-12 2014-06-24 Debasish Mukhopadhyay High purity water produced by reverse osmosis

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4416700A (en) * 1981-07-20 1983-11-22 The Coca Cola Company Process for treating caramel colors
JPS614591A (en) * 1984-06-04 1986-01-10 アローヘツド、インダストリアル、ウオーター、インコーポレイテツド Reverse osmosis system
JPH0675569A (en) * 1992-08-11 1994-03-18 Yamaha Corp Electronic keyed musical instrument
US8617398B2 (en) 1996-08-12 2013-12-31 Debasish Mukhopadhyay Method for high efficiency reverse osmosis operation
US8641905B2 (en) 1996-08-12 2014-02-04 Debasish Mukhopadhyay Method for high efficiency reverse osmosis operation
US8758720B2 (en) 1996-08-12 2014-06-24 Debasish Mukhopadhyay High purity water produced by reverse osmosis
US9073763B2 (en) 1996-08-12 2015-07-07 Debasish Mukhopadhyay Method for high efficiency reverse osmosis operation
US9428412B2 (en) 1996-08-12 2016-08-30 Debasish Mukhopadhyay Method for high efficiency reverse osmosis operation
US5925255A (en) * 1997-03-01 1999-07-20 Mukhopadhyay; Debasish Method and apparatus for high efficiency reverse osmosis operation
US6306197B1 (en) 2000-04-19 2001-10-23 Seh America, Inc. Isopropyl alcohol scrubbing system

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