CH630811A5 - Process for back-washing of back-washable fixed beds built up from granular materials - Google Patents
Process for back-washing of back-washable fixed beds built up from granular materials Download PDFInfo
- Publication number
- CH630811A5 CH630811A5 CH97778A CH97778A CH630811A5 CH 630811 A5 CH630811 A5 CH 630811A5 CH 97778 A CH97778 A CH 97778A CH 97778 A CH97778 A CH 97778A CH 630811 A5 CH630811 A5 CH 630811A5
- Authority
- CH
- Switzerland
- Prior art keywords
- liquid
- gas
- fixed bed
- pressure
- backwashing
- Prior art date
Links
- 238000000034 method Methods 0.000 title claims description 33
- 238000011001 backwashing Methods 0.000 title claims description 26
- 239000008187 granular material Substances 0.000 title claims description 4
- 239000007789 gas Substances 0.000 claims description 37
- 239000007788 liquid Substances 0.000 claims description 34
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 23
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 9
- 239000001301 oxygen Substances 0.000 claims description 9
- 229910052760 oxygen Inorganic materials 0.000 claims description 9
- 230000000694 effects Effects 0.000 description 7
- 230000015572 biosynthetic process Effects 0.000 description 5
- 239000000126 substance Substances 0.000 description 5
- 238000009825 accumulation Methods 0.000 description 4
- 230000003750 conditioning effect Effects 0.000 description 4
- 239000004576 sand Substances 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 3
- 238000004090 dissolution Methods 0.000 description 3
- 210000000056 organ Anatomy 0.000 description 3
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 244000005700 microbiome Species 0.000 description 2
- 230000005012 migration Effects 0.000 description 2
- 238000013508 migration Methods 0.000 description 2
- 229920006395 saturated elastomer Polymers 0.000 description 2
- 238000005406 washing Methods 0.000 description 2
- 238000005422 blasting Methods 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000001143 conditioned effect Effects 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 239000000706 filtrate Substances 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 238000005188 flotation Methods 0.000 description 1
- 230000009931 harmful effect Effects 0.000 description 1
- 230000000813 microbial effect Effects 0.000 description 1
- 230000007483 microbial process Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 239000008213 purified water Substances 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 230000009291 secondary effect Effects 0.000 description 1
- 230000002269 spontaneous effect Effects 0.000 description 1
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
-
- 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)
- Biological Treatment Of Waste Water (AREA)
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CH97778A CH630811A5 (en) | 1978-01-30 | 1978-01-30 | Process for back-washing of back-washable fixed beds built up from granular materials |
| DE2805058A DE2805058C3 (de) | 1978-01-30 | 1978-02-07 | Verfahren zur Verbesserung der Rückspülung und/oder zur Konditionierung von aus körnigen Materialien aufgebauten rückspülbaren Festbetten |
| FR7834321A FR2415483A1 (fr) | 1978-01-30 | 1978-12-06 | Procede d'accroissement de l'efficacite du lavage a contre-courant ou de conditionnement de lits fixes de matieres granulaires |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CH97778A CH630811A5 (en) | 1978-01-30 | 1978-01-30 | Process for back-washing of back-washable fixed beds built up from granular materials |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CH630811A5 true CH630811A5 (en) | 1982-07-15 |
Family
ID=4199600
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CH97778A CH630811A5 (en) | 1978-01-30 | 1978-01-30 | Process for back-washing of back-washable fixed beds built up from granular materials |
Country Status (3)
| Country | Link |
|---|---|
| CH (1) | CH630811A5 (enrdf_load_stackoverflow) |
| DE (1) | DE2805058C3 (enrdf_load_stackoverflow) |
| FR (1) | FR2415483A1 (enrdf_load_stackoverflow) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2948091A1 (de) * | 1979-11-29 | 1981-06-04 | Wabag Wasserreinigungsbau Alfred Kretzschmar Gmbh & Co Kg, 8650 Kulmbach | Verfahren zum abfuehren des schlammwassers aus dem innenraum eines filters und filteranlage zur durchfuehrung des verfahrens |
| RU2157720C1 (ru) * | 1999-06-18 | 2000-10-20 | Пименов Юрий Георгиевич | Способ регенерации сыпучего фильтрующего материала |
| DE10106322B4 (de) * | 2001-02-09 | 2005-11-17 | Inka-Holding Und Immobilien Gmbh & Co. Kg | Wasserfilter |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR369056A (fr) * | 1906-08-20 | 1906-12-28 | Hans Reisert | Procédé et appareil pour le lavage des masses filtrantes libres |
| FR1164798A (fr) * | 1957-01-17 | 1958-10-14 | Emile Degremont Ets | Procédé et dispositif de lavage des filtres à sable |
| US3506125A (en) * | 1967-09-15 | 1970-04-14 | Roderick M Willis | Water treatment process for improved gravity filtering and backwashing |
| DE1816527C3 (de) * | 1968-12-17 | 1975-07-31 | Hans-Ulrich 6200 Wiesbaden Klein | Verfahren zur Wasseraufbereitung in einem Druckwind-Schaltkessel und Vorrichtung zu seiner Durchführung |
| US3812969A (en) * | 1972-10-16 | 1974-05-28 | Sybron Corp | Apparatus for fluid treatment |
| DE2608899C3 (de) * | 1976-03-04 | 1982-12-30 | Müller, Wolf-Rüdiger, Dipl.-Ing., 7000 Stuttgart | Verfahren zur Verbesserung des Rückspülvorganges bei Filtern aus körnigen Materialien durch den Einsatz von Wasserstoffperoxid (H↓2↓O↓2↓) |
-
1978
- 1978-01-30 CH CH97778A patent/CH630811A5/de not_active IP Right Cessation
- 1978-02-07 DE DE2805058A patent/DE2805058C3/de not_active Expired
- 1978-12-06 FR FR7834321A patent/FR2415483A1/fr active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| FR2415483B1 (enrdf_load_stackoverflow) | 1984-03-09 |
| DE2805058A1 (de) | 1979-08-02 |
| DE2805058C3 (de) | 1981-05-21 |
| FR2415483A1 (fr) | 1979-08-24 |
| DE2805058B2 (de) | 1980-08-14 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PL | Patent ceased | ||
| PL | Patent ceased |