JPS5678609A - Cleaning method of packed vessel - Google Patents
Cleaning method of packed vesselInfo
- Publication number
- JPS5678609A JPS5678609A JP15515579A JP15515579A JPS5678609A JP S5678609 A JPS5678609 A JP S5678609A JP 15515579 A JP15515579 A JP 15515579A JP 15515579 A JP15515579 A JP 15515579A JP S5678609 A JPS5678609 A JP S5678609A
- Authority
- JP
- Japan
- Prior art keywords
- bed
- backwashing
- water
- pipes
- packed bed
- 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
- 238000004140 cleaning Methods 0.000 title abstract 2
- 238000000034 method Methods 0.000 title 1
- 238000011001 backwashing Methods 0.000 abstract 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract 7
- 238000012856 packing Methods 0.000 abstract 3
- 238000001914 filtration Methods 0.000 abstract 2
- 239000012141 concentrate Substances 0.000 abstract 1
- 238000007599 discharging Methods 0.000 abstract 1
Landscapes
- Filtration Of Liquid (AREA)
- Solid-Sorbent Or Filter-Aiding Compositions (AREA)
Abstract
PURPOSE: To improve the backwashing efficiency by backwashing by discharging part of backwashig water from the way of the packed bed at the time of cleaning the packed bed contg. granular packings for filtration through backwashing.
CONSTITUTION: A water-permeable supporting plate 9 is buried in the lower part in a filter vessel body 1 having a granular packed bed 6 for filtration, and a plurality of water collecting pipes 8 are buried on the way of the packed bed 6. Discharge pipes 7 for backwashing water and on-off valves 17 are installed to the pipes 8. The grain size distribution of the packings in the bed 6 are such that the grain sizes are large in the bottom part of the bed and are smaller the nearer the uppermost bed. Backwashing water is adimitted through a backwashing water inflow pipe 4 and is put into the bed 6 through the supporting plate 9. According to the distribution of grain sizes, part of the backwashing water is discharged continuously from plural places in the bed 6 through the water collecting pipes 8 and discharge pipes 7, whereby high backwashing velocity is given in the bottom part of the bed where the packings of large grain sizes concentrate, and the velocity is made low in the upper bed. The entire part of the bed 6 is uniformly and effectively washed and the packed bed is prevented from being inverted.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15515579A JPS5678609A (en) | 1979-11-30 | 1979-11-30 | Cleaning method of packed vessel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15515579A JPS5678609A (en) | 1979-11-30 | 1979-11-30 | Cleaning method of packed vessel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5678609A true JPS5678609A (en) | 1981-06-27 |
Family
ID=15599726
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP15515579A Pending JPS5678609A (en) | 1979-11-30 | 1979-11-30 | Cleaning method of packed vessel |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5678609A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58172852U (en) * | 1982-05-13 | 1983-11-18 | 紀本電子工業株式会社 | Polluted water measurement pre-treatment device |
| JP2012045459A (en) * | 2010-08-25 | 2012-03-08 | Swing Corp | Natural equilibrium filtering apparatus including washing means of slowdown method |
-
1979
- 1979-11-30 JP JP15515579A patent/JPS5678609A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58172852U (en) * | 1982-05-13 | 1983-11-18 | 紀本電子工業株式会社 | Polluted water measurement pre-treatment device |
| JP2012045459A (en) * | 2010-08-25 | 2012-03-08 | Swing Corp | Natural equilibrium filtering apparatus including washing means of slowdown method |
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