GB2020562B - Drainage nozzles in filter bed - Google Patents
Drainage nozzles in filter bedInfo
- Publication number
- GB2020562B GB2020562B GB7901938A GB7901938A GB2020562B GB 2020562 B GB2020562 B GB 2020562B GB 7901938 A GB7901938 A GB 7901938A GB 7901938 A GB7901938 A GB 7901938A GB 2020562 B GB2020562 B GB 2020562B
- Authority
- GB
- United Kingdom
- Prior art keywords
- filter bed
- drainage nozzles
- nozzles
- drainage
- 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.)
- Expired
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D24/00—Filters comprising loose filtering material, i.e. filtering material without any binder between the individual particles or fibres thereof
- B01D24/02—Filters comprising loose filtering material, i.e. filtering material without any binder between the individual particles or fibres thereof with the filter bed stationary during the filtration
- B01D24/10—Filters comprising loose filtering material, i.e. filtering material without any binder between the individual particles or fibres thereof with the filter bed stationary during the filtration the filtering material being held in a closed container
- B01D24/12—Downward filtration, the filtering material being supported by pervious surfaces
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Filtration Of Liquid (AREA)
- Biological Treatment Of Waste Water (AREA)
- Sewage (AREA)
- Filtering Materials (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH506678A CH627090A5 (en) | 1978-05-10 | 1978-05-10 |
Publications (2)
Publication Number | Publication Date |
---|---|
GB2020562A GB2020562A (en) | 1979-11-21 |
GB2020562B true GB2020562B (en) | 1982-10-13 |
Family
ID=4287361
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB7901938A Expired GB2020562B (en) | 1978-05-10 | 1979-01-19 | Drainage nozzles in filter bed |
Country Status (9)
Country | Link |
---|---|
JP (1) | JPS5850523B2 (en) |
AT (1) | AT370339B (en) |
CH (1) | CH627090A5 (en) |
DE (1) | DE2852316C3 (en) |
ES (1) | ES477124A1 (en) |
FR (1) | FR2425261B1 (en) |
GB (1) | GB2020562B (en) |
IT (1) | IT1111791B (en) |
NL (1) | NL7902698A (en) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5845708A (en) * | 1981-09-11 | 1983-03-17 | Kurita Water Ind Ltd | Filter apparatus |
US5028322A (en) * | 1989-07-11 | 1991-07-02 | The Graver Company | Low profile underdrain strainer assembly with improved distribution/fastening means |
JP4688049B2 (en) * | 2006-02-20 | 2011-05-25 | 株式会社 太陽 | Water purifier and backwash method for water purifier |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE61755C (en) * | F. ENGEL in Hamburg | Sand filter | ||
GB618196A (en) * | 1946-11-01 | 1949-02-17 | Frank Pullen Candy | Improvements in connection with filters |
DE1022190B (en) * | 1956-04-14 | 1958-01-09 | Bran & Luebbe | Liquid distributor for mixed bed filter |
GB872632A (en) * | 1959-05-13 | 1961-07-12 | Pfaudler Permutit Inc | Underdrain for a tank |
DE1302745C2 (en) * | 1963-08-15 | 1973-07-19 | Gebrüder Sulzer AG, Winterthur (Schweiz·.) | CONCRETE FILTER FLOOR OF A QUICK FILTER SYSTEM |
DE1958124U (en) * | 1967-02-07 | 1967-04-06 | Berliner Wassertechnische Ges | FILTER NOZZLE FOR LIQUID TREATMENT SYSTEMS. |
DE2414080C3 (en) * | 1974-03-23 | 1980-06-04 | L. & C. Steinmueller Gmbh, 5270 Gummersbach | Liquid filter |
DE2436447C3 (en) * | 1974-07-29 | 1980-04-10 | Preussag Ag, 3000 Hannover Und 1000 Berlin | Backwashable filter without nozzle base with combined air and water rinsing |
-
1978
- 1978-05-10 CH CH506678A patent/CH627090A5/de not_active IP Right Cessation
- 1978-12-04 AT AT0863978A patent/AT370339B/en not_active IP Right Cessation
- 1978-12-04 DE DE2852316A patent/DE2852316C3/en not_active Expired
-
1979
- 1979-01-05 JP JP54000561A patent/JPS5850523B2/en not_active Expired
- 1979-01-19 GB GB7901938A patent/GB2020562B/en not_active Expired
- 1979-01-19 FR FR7901344A patent/FR2425261B1/en not_active Expired
- 1979-01-24 ES ES477124A patent/ES477124A1/en not_active Expired
- 1979-02-06 IT IT19921/79A patent/IT1111791B/en active
- 1979-04-05 NL NL7902698A patent/NL7902698A/en not_active Application Discontinuation
Also Published As
Publication number | Publication date |
---|---|
JPS5850523B2 (en) | 1983-11-11 |
DE2852316B2 (en) | 1981-04-16 |
JPS54147574A (en) | 1979-11-17 |
DE2852316C3 (en) | 1981-11-26 |
IT7919921A0 (en) | 1979-02-06 |
CH627090A5 (en) | 1981-12-31 |
DE2852316A1 (en) | 1979-11-15 |
NL7902698A (en) | 1979-11-13 |
ES477124A1 (en) | 1979-12-16 |
GB2020562A (en) | 1979-11-21 |
AT370339B (en) | 1983-03-25 |
FR2425261A1 (en) | 1979-12-07 |
ATA863978A (en) | 1982-08-15 |
FR2425261B1 (en) | 1988-06-17 |
IT1111791B (en) | 1986-01-13 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PCNP | Patent ceased through non-payment of renewal fee |