JPS555713A - Filter unit - Google Patents

Filter unit

Info

Publication number
JPS555713A
JPS555713A JP7816478A JP7816478A JPS555713A JP S555713 A JPS555713 A JP S555713A JP 7816478 A JP7816478 A JP 7816478A JP 7816478 A JP7816478 A JP 7816478A JP S555713 A JPS555713 A JP S555713A
Authority
JP
Japan
Prior art keywords
stock solution
balance tank
refiltering
filter
work
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
JP7816478A
Other languages
Japanese (ja)
Inventor
Shozo Tsushima
Tomohiro Akiyama
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.)
Iwai Kikai Kogyo Co Ltd
Original Assignee
Iwai Kikai Kogyo 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 Iwai Kikai Kogyo Co Ltd filed Critical Iwai Kikai Kogyo Co Ltd
Priority to JP7816478A priority Critical patent/JPS555713A/en
Publication of JPS555713A publication Critical patent/JPS555713A/en
Pending legal-status Critical Current

Links

Landscapes

  • Separation Using Semi-Permeable Membranes (AREA)

Abstract

PURPOSE: To reduce the replacement cost for the filter membrane, and to prevent the flow-out of the stock solution, by processing as follows; the stock solution of the balance tank is filtered while being recycled, after that, the solution is refiltered; hereupon, when the pressure difference between before and after refiltering work increases to exceed the specified limit, the unfiltered stock solution is returned to the balance tank.
CONSTITUTION: The stock solution is sent from the stock solution tank 1 to the balance tank 2, and is recycled by the pump 3 so as to return to the balance tank 2; under this condition, the stock solution is filtered by the ultrafilter 4. Next, filtrate is refiltered by the backup filter 5. Hereupon, if the pressure difference between before and after refiltering work of the backup filter 5 increases to exceed the specified value, the pressure alarm and recorder 6 actuates the valve 7 for returning the stock solution before the refiltering work by the backup filter 5 into the balance tank 2; hereby, the replacement cost for the filter membrane of the backup filter 5 is reduced, and the mixing of the effluent of stock solution into the finished filtrate is prevented.
COPYRIGHT: (C)1980,JPO&Japio
JP7816478A 1978-06-28 1978-06-28 Filter unit Pending JPS555713A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7816478A JPS555713A (en) 1978-06-28 1978-06-28 Filter unit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7816478A JPS555713A (en) 1978-06-28 1978-06-28 Filter unit

Publications (1)

Publication Number Publication Date
JPS555713A true JPS555713A (en) 1980-01-16

Family

ID=13654281

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7816478A Pending JPS555713A (en) 1978-06-28 1978-06-28 Filter unit

Country Status (1)

Country Link
JP (1) JPS555713A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59183807A (en) * 1983-04-04 1984-10-19 Asahi Chem Ind Co Ltd Membrane filtration

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59183807A (en) * 1983-04-04 1984-10-19 Asahi Chem Ind Co Ltd Membrane filtration
JPH0470933B2 (en) * 1983-04-04 1992-11-12 Asahi Chemical Ind

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