JPS6456105A - Method and device for reverse-osmosis concentration - Google Patents

Method and device for reverse-osmosis concentration

Info

Publication number
JPS6456105A
JPS6456105A JP21135287A JP21135287A JPS6456105A JP S6456105 A JPS6456105 A JP S6456105A JP 21135287 A JP21135287 A JP 21135287A JP 21135287 A JP21135287 A JP 21135287A JP S6456105 A JPS6456105 A JP S6456105A
Authority
JP
Japan
Prior art keywords
liq
concn
concentrate
pressure valve
flow rate
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
Application number
JP21135287A
Other languages
Japanese (ja)
Other versions
JPH0626650B2 (en
Inventor
Masahiro Nojiri
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.)
Maruyama Manufacturing Co Ltd
Original Assignee
Maruyama Manufacturing 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 Maruyama Manufacturing Co Ltd filed Critical Maruyama Manufacturing Co Ltd
Priority to JP21135287A priority Critical patent/JPH0626650B2/en
Publication of JPS6456105A publication Critical patent/JPS6456105A/en
Publication of JPH0626650B2 publication Critical patent/JPH0626650B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D61/00—Processes of separation using semi-permeable membranes, e.g. dialysis, osmosis or ultrafiltration; Apparatus, accessories or auxiliary operations specially adapted therefor
    • B01D61/02—Reverse osmosis; Hyperfiltration ; Nanofiltration
    • B01D61/12—Controlling or regulating

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Water Supply & Treatment (AREA)
  • Nanotechnology (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Separation Using Semi-Permeable Membranes (AREA)

Abstract

PURPOSE:To perform concentration even when the amt. of a liq. to be treated is small and to continuously and stably recover a liq. concentrate of a specified concn. by adjusting the circulating flow rate and discharge flow rate of the concentrate to keep the temp. and concn. of a supply liq. in an equilibrium. CONSTITUTION:A back-pressure valve 32 on the discharge side is fully closed at first, the opening of a back-pressure valve 46 on the circulation side is adjusted to control the pressure of the supply liq. on the inlet side of a reverse-osmosis membrane module 24 to a prescribed value. When the temp. and concn. of the supply liq. are increased and kept in a transient state proceeding to an equilibrium, the back-pressure valve 46 on the circulation side is throttled and the back-pressure valve 32 on the discharge side is opened to decrease the circulating flow rate of the concentrate and to increase the discharge flow rate, and the pressure of the supply liq. on the inlet side is kept at a prescribed value. When the indicated value of a permeated liq. flowmeter 36 reaches a desired value, the opening of the back-pressure valve 32 on the discharge side is adjusted so that the indicated value of the flowmeter 34 of the concentrate on the discharge side is also controlled to a desired value. Thereafter, the concn. and temp. of the supply liq. are rapidly brought to an equilibrium, and the concn. of the concentrate leaving the module 24 is also made constant.
JP21135287A 1987-08-27 1987-08-27 Reverse osmosis concentration method and apparatus Expired - Lifetime JPH0626650B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP21135287A JPH0626650B2 (en) 1987-08-27 1987-08-27 Reverse osmosis concentration method and apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP21135287A JPH0626650B2 (en) 1987-08-27 1987-08-27 Reverse osmosis concentration method and apparatus

Publications (2)

Publication Number Publication Date
JPS6456105A true JPS6456105A (en) 1989-03-03
JPH0626650B2 JPH0626650B2 (en) 1994-04-13

Family

ID=16604548

Family Applications (1)

Application Number Title Priority Date Filing Date
JP21135287A Expired - Lifetime JPH0626650B2 (en) 1987-08-27 1987-08-27 Reverse osmosis concentration method and apparatus

Country Status (1)

Country Link
JP (1) JPH0626650B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007136384A (en) * 2005-11-21 2007-06-07 Family Service Eiko Co Ltd Permeate production equipment

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007136384A (en) * 2005-11-21 2007-06-07 Family Service Eiko Co Ltd Permeate production equipment

Also Published As

Publication number Publication date
JPH0626650B2 (en) 1994-04-13

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