JPS555713A - Filter unit - Google Patents
Filter unitInfo
- 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
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
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)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS59183807A (en) * | 1983-04-04 | 1984-10-19 | Asahi Chem Ind Co Ltd | Membrane filtration |
-
1978
- 1978-06-28 JP JP7816478A patent/JPS555713A/en active Pending
Cited By (2)
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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