JPS5748319A - Diatomaceous earth treatment of precoated filter - Google Patents
Diatomaceous earth treatment of precoated filterInfo
- Publication number
- JPS5748319A JPS5748319A JP55123191A JP12319180A JPS5748319A JP S5748319 A JPS5748319 A JP S5748319A JP 55123191 A JP55123191 A JP 55123191A JP 12319180 A JP12319180 A JP 12319180A JP S5748319 A JPS5748319 A JP S5748319A
- Authority
- JP
- Japan
- Prior art keywords
- diatomaceous earth
- filter
- solvent
- filter cake
- lowered
- 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
- Filtration Of Liquid (AREA)
Abstract
PURPOSE: To availably use diatomaceous earth by a method wherein, when filter capacity of a filter cake is lowered, said filter cake is collapsed to form diatomaceous earth powder and the resultant diatomaceous earth powder is stirred, mixed and allowed to stand in a filter case to discharge inferior diatomaceous earth in order to replace with new diatomaceous earth.
CONSTITUTION: When a solvent is filtered and impurities therein are adhered to a surface of a filter cake 29 and filtering capacity is lowered, said cake is peeled by vibration and new diatomaceous earth is supplied along with the solvent to form the filter cake 29 again by precoating. When this operation is repeated, because a part of diatomaceous earth is clogged and filtering capacity is lowered to a large extent, a filter grid 27 is pushed down and said filter cake 29 is collapsed to be formed into a diatomaceous earth powder and the resultant diatomaceous earth powder, impurities, the solvent are stirred and mixed by a stirrer 30 in the filter case and allowed to stand for a definite time. Clogged diatomaceous earth or the like is floated and diatomaceous earth free from clogging and the solvent are absorbed and precipitated. Bad diatomaceous earth is treated in a distillation apparatus to recover the solvent and the residue is discharged.
COPYRIGHT: (C)1982,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP55123191A JPS5748319A (en) | 1980-09-04 | 1980-09-04 | Diatomaceous earth treatment of precoated filter |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP55123191A JPS5748319A (en) | 1980-09-04 | 1980-09-04 | Diatomaceous earth treatment of precoated filter |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5748319A true JPS5748319A (en) | 1982-03-19 |
Family
ID=14854439
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP55123191A Pending JPS5748319A (en) | 1980-09-04 | 1980-09-04 | Diatomaceous earth treatment of precoated filter |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5748319A (en) |
-
1980
- 1980-09-04 JP JP55123191A patent/JPS5748319A/en active Pending
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