CA2187192C - Crepine pour drain de sortie et procedes d'utilisation - Google Patents
Crepine pour drain de sortie et procedes d'utilisation Download PDFInfo
- Publication number
- CA2187192C CA2187192C CA002187192A CA2187192A CA2187192C CA 2187192 C CA2187192 C CA 2187192C CA 002187192 A CA002187192 A CA 002187192A CA 2187192 A CA2187192 A CA 2187192A CA 2187192 C CA2187192 C CA 2187192C
- Authority
- CA
- Canada
- Prior art keywords
- air
- laterals
- filter
- grid
- media
- 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 - Lifetime
Links
- 238000000034 method Methods 0.000 title claims abstract description 20
- 239000007788 liquid Substances 0.000 claims description 28
- 238000009991 scouring Methods 0.000 claims description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 8
- 238000001914 filtration Methods 0.000 claims description 7
- 238000004873 anchoring Methods 0.000 claims description 5
- 229910001220 stainless steel Inorganic materials 0.000 claims description 5
- 239000010935 stainless steel Substances 0.000 claims description 5
- 239000002351 wastewater Substances 0.000 claims description 5
- 238000009434 installation Methods 0.000 abstract description 5
- 238000009420 retrofitting Methods 0.000 abstract 2
- 238000004519 manufacturing process Methods 0.000 abstract 1
- 238000009792 diffusion process Methods 0.000 description 7
- 239000012530 fluid Substances 0.000 description 6
- 239000007789 gas Substances 0.000 description 6
- 238000010276 construction Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 238000011001 backwashing Methods 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 210000002445 nipple Anatomy 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 239000003638 chemical reducing agent Substances 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000000295 complement effect Effects 0.000 description 1
- 239000000706 filtrate Substances 0.000 description 1
- 229920001903 high density polyethylene Polymers 0.000 description 1
- 239000004700 high-density polyethylene Substances 0.000 description 1
- 238000005342 ion exchange Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000010841 municipal wastewater Substances 0.000 description 1
- 230000003472 neutralizing effect Effects 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 238000005201 scrubbing Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000004065 wastewater treatment Methods 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
- B01D24/02—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
- B01D24/20—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 provided in an open container
- B01D24/24—Downward filtration, the container having distribution or collection headers or pervious conduits
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Separating Particles In Gases By Inertia (AREA)
- Biological Treatment Of Waste Water (AREA)
Abstract
L'invention décrit des systèmes de crépine utilisés pour distribuer un gaz à l'intérieur de systèmes de traitement tels que filtres à drain de sortie (50) et clarificateurs par contact. La crépine est maintenue en place par en-dessus, ce qui permet de l'abaisser pour la mettre dans la position voulue et, ainsi, de la modifier ou de la réparer. De plus, cette caractéristique permet d'installer après coup une crépine dans un système existant, tel qu'un filtre à drain de sortie, dans lequel le lit de substances (60) recouvre le drain de sortie (50) et n'est pas dérangé par cette installation. L'invention concerne ainsi également des procédés d'installation ou d'installation après coup de systèmes de crépine. Un autre aspect de la présente invention concerne une crépine constituée d'un collecteur d'air (108) relié à des conduites d'air secondaires (110) par une rampe (109) introduite à travers un orifice lisse dans les parois du collecteur, ce qui permet d'obtenir une structure simple et facile à fabriquer qui évite les problèmes rencontrés avec des composants de l'état antérieur de la technique.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US08/223,236 | 1994-04-05 | ||
| US08/223,236 US5534202A (en) | 1994-04-05 | 1994-04-05 | Air grid for underdrains and similar systems |
| PCT/US1995/004145 WO1995026799A1 (fr) | 1994-04-05 | 1995-04-04 | Crepine pour drain de sortie et procedes d'utilisation |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CA2187192A1 CA2187192A1 (fr) | 1995-10-12 |
| CA2187192C true CA2187192C (fr) | 2007-05-01 |
Family
ID=38051333
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA002187192A Expired - Lifetime CA2187192C (fr) | 1994-04-05 | 1995-04-04 | Crepine pour drain de sortie et procedes d'utilisation |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA2187192C (fr) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113896317A (zh) * | 2021-10-22 | 2022-01-07 | 广东卓信环境科技股份有限公司 | 一种用于滤池反洗的气水独立的配水配气复合滤管 |
-
1995
- 1995-04-04 CA CA002187192A patent/CA2187192C/fr not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| CA2187192A1 (fr) | 1995-10-12 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EEER | Examination request | ||
| MKEX | Expiry |
Effective date: 20150407 |