CH597898A5 - - Google Patents
Info
- Publication number
- CH597898A5 CH597898A5 CH1025975A CH1025975A CH597898A5 CH 597898 A5 CH597898 A5 CH 597898A5 CH 1025975 A CH1025975 A CH 1025975A CH 1025975 A CH1025975 A CH 1025975A CH 597898 A5 CH597898 A5 CH 597898A5
- Authority
- CH
- Switzerland
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
- B01D24/46—Regenerating the filtering material in the filter
- B01D24/4631—Counter-current flushing, e.g. by air
- B01D24/4636—Counter-current flushing, e.g. by air with backwash shoes; with nozzles
-
- 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
- B01D24/14—Downward filtration, the container having distribution or collection headers or pervious conduits
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Filtration Of Liquid (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US05/517,862 US3954620A (en) | 1974-10-25 | 1974-10-25 | Filtration and backwashing apparatus for use with a water filtration system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CH597898A5 true CH597898A5 (US20070244113A1-20071018-C00169.png) | 1978-04-14 |
Family
ID=24061525
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CH1025975A CH597898A5 (US20070244113A1-20071018-C00169.png) | 1974-10-25 | 1975-08-06 |
Country Status (3)
| Country | Link |
|---|---|
| US (1) | US3954620A (US20070244113A1-20071018-C00169.png) |
| CH (1) | CH597898A5 (US20070244113A1-20071018-C00169.png) |
| NL (1) | NL7507736A (US20070244113A1-20071018-C00169.png) |
Families Citing this family (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4200536A (en) * | 1978-08-22 | 1980-04-29 | Samuel Kaufman | Underdrain for filter tanks |
| FR2450626A1 (fr) * | 1979-03-06 | 1980-10-03 | Degremont | Filtre a lits superposes de materiaux granulaires |
| US4579659A (en) * | 1983-11-03 | 1986-04-01 | Indreco U.S.A., Ltd. | Filter nozzle |
| GB8808133D0 (en) * | 1988-04-07 | 1988-05-11 | Paterson Candy Int | Granular media filters |
| US5149427A (en) * | 1991-04-03 | 1992-09-22 | The F.B. Leopold Company, Inc. | Cap for underdrains in gravity filters |
| US5089147A (en) * | 1991-05-01 | 1992-02-18 | Zimpro Passavant Environmental Systems, Inc. | Underdrain for granular medium filter |
| EP0517649B1 (de) * | 1991-06-07 | 1996-03-27 | Sulzer Chemtech AG | Festbettreaktor zum biologischen Abwasserreinigen |
| US5160614A (en) * | 1992-02-25 | 1992-11-03 | The F.B. Leopold Company, Inc. | Air duct block for air/water underdrain systems in gravity filters |
| US5693219A (en) * | 1996-01-31 | 1997-12-02 | Beauchamp; William J. | Apparatus for backwashing a water filter |
| GB2380951C (en) * | 2001-10-18 | 2011-09-28 | Derek Colin Tolley | Filtration of liquid media |
| CN101166808B (zh) * | 2005-04-11 | 2013-03-27 | 国际壳牌研究有限公司 | 生产具有降低mcr含量的原油产品的方法和催化剂 |
| US20090134101A1 (en) * | 2007-05-03 | 2009-05-28 | Dae Sung Lee | Filtration system |
| JP5201481B2 (ja) * | 2008-06-19 | 2013-06-05 | 株式会社ナガオカ | 水処理装置および水処理装置濾材層の洗浄方法 |
| JP5845535B2 (ja) * | 2011-07-25 | 2016-01-20 | 株式会社ナガオカ | 水処理装置の上層洗浄装置および水処理装置濾材層の洗浄方法 |
| GB201301028D0 (en) * | 2012-12-04 | 2013-03-06 | Enhydra Ltd | Filtration arrangement and method |
| CN103657173A (zh) * | 2013-12-12 | 2014-03-26 | 王强 | 一种均质重质粗滤料上向流过滤装置 |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1572398A (en) * | 1924-05-12 | 1926-02-09 | Frederick B Leopold | Filtering apparatus |
| US1871122A (en) * | 1928-12-27 | 1932-08-09 | Kretzschmar Alfred | Filter for liquids |
| US2453345A (en) * | 1945-06-28 | 1948-11-09 | American Viscose Corp | Filtering apparatus |
| US3493116A (en) * | 1969-02-10 | 1970-02-03 | Swimrite Mfg Co Inc | Swimming pool filter |
-
1974
- 1974-10-25 US US05/517,862 patent/US3954620A/en not_active Expired - Lifetime
-
1975
- 1975-06-30 NL NL7507736A patent/NL7507736A/xx unknown
- 1975-08-06 CH CH1025975A patent/CH597898A5/xx not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| US3954620A (en) | 1976-05-04 |
| NL7507736A (nl) | 1976-04-27 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PL | Patent ceased |