GB2245503A - Filter for waste water - Google Patents
Filter for waste water Download PDFInfo
- Publication number
- GB2245503A GB2245503A GB8813267A GB8813267A GB2245503A GB 2245503 A GB2245503 A GB 2245503A GB 8813267 A GB8813267 A GB 8813267A GB 8813267 A GB8813267 A GB 8813267A GB 2245503 A GB2245503 A GB 2245503A
- Authority
- GB
- United Kingdom
- Prior art keywords
- filter
- suspended
- filter elements
- elements
- upward flow
- 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.)
- Withdrawn
Links
- 239000002351 wastewater Substances 0.000 title description 2
- 239000007787 solid Substances 0.000 claims abstract description 6
- 239000010865 sewage Substances 0.000 claims abstract description 4
- 238000011001 backwashing Methods 0.000 claims 1
- 238000001914 filtration Methods 0.000 abstract description 3
- 239000006260 foam Substances 0.000 abstract description 3
- 229910001220 stainless steel Inorganic materials 0.000 abstract description 2
- 239000010935 stainless steel Substances 0.000 abstract description 2
- 229920002994 synthetic fiber Polymers 0.000 abstract description 2
- 238000000034 method Methods 0.000 description 3
- 238000004140 cleaning Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D35/00—Filtering devices having features not specifically covered by groups B01D24/00 - B01D33/00, or for applications not specifically covered by groups B01D24/00 - B01D33/00; Auxiliary devices for filtration; Filter housing constructions
- B01D35/10—Brush filters ; Rotary brush filters
Landscapes
- Engineering & Computer Science (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Filtering Materials (AREA)
Abstract
Filamental (brush-like) elements made of stainless steel and synthetic fibre are suspended in effluent to provide filtration either on their own or in conjunction with another filter. The elements may be suspended from a grid and filter the influent to a treatment tank, or they are suspended under a foam, mesh, gravel, wedge wire or other type of upward flow filter, to act as a coarse preliminary filter. The elements can be fitted into existing clarifying tanks at sewage treatment works and will reduce the amount of suspended solids in the final effluent.
Description
COPACLEAN FILTER
This invention relates to a process for clarifying waste water.
Sewage Treatment works are required to comply with the Control of Pollution Act. Currently some 22% of Sewage Works fail to meet their prescribed consent level due to excess suspended solids and BOD. The most efficient method of filtering out the solids is achieved by fitting an upward flow filter into the system before final discharge. This works well if the works is only suffering marginal failures and is not hydraulically overloaded. The downside of the above filters is that cleaning is labour intensive.
According to this invention filamental elements made of stainless steel and synthetic fibre are suspended in the effluent in such a manner that they provide filtration either on their own or in conjunction with upward flow filter such as are described above.
A specific embodiment of the invention will now be described by way of reference to the accompanying drawings in which Fig 1 shows the filamental elements suspended from a grid in such a way that the influent into the tank is filtered and additionally, with filamental elements suspended under a foam, mesh, gravel, wedge wire or other type of upward flow filter in such a way that it will act as a coarse filter.
Fig 2 shows filamental elements suspended in a tank of circular configuration.
Fig 3 shows filamental elements in a dortmund or pyramidal type tank without a final upward flow filter.
Fig 3A shows filamental filters suspended under a foam filter.
Fig 4 shows the configuration of the filamental elements.
Fig 5 shows the method of supporting the grids from which the filters are suspended. The tank is divided up into manageable proportions using tee section dividers into which the grids are fitted and retained using angles or clips. The filters are connected to the grids with plastic or metal ties.
Claims (1)
- A system of filter elements which can be fitted into existing clarifying tanks at sewage treatment works and which will substantially reduce the amount of suspended solids in the final effluent.A system of filter elements which can be fitted in front of upward flow filters in the clarifying tanks to reduce the amount of solids to be filtered out by the final filter.A system of filter elements that can be more readily cleaned than filters currently in use.A system of filter elements that can be suspended under conventional upward flow filters to reduce the quantity of solids to be filtered by the final filters.A system of filter elements that will reduce the frequency of backwashing of upward flow filters.A grid system for hanging filter elements.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB8813267A GB2245503A (en) | 1988-06-04 | 1988-06-04 | Filter for waste water |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB8813267A GB2245503A (en) | 1988-06-04 | 1988-06-04 | Filter for waste water |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| GB8813267D0 GB8813267D0 (en) | 1988-07-06 |
| GB2245503A true GB2245503A (en) | 1992-01-08 |
Family
ID=10638094
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB8813267A Withdrawn GB2245503A (en) | 1988-06-04 | 1988-06-04 | Filter for waste water |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB2245503A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB561585A (en) * | 1942-08-21 | 1944-05-25 | Frederick Heather | Filters of the brush type |
| GB567903A (en) * | 1943-07-23 | 1945-03-07 | Frederick Heather | Improvements in filters for fluids |
| GB574888A (en) * | 1943-12-02 | 1946-01-24 | Frederick Heather | Improvements in or relating to filters for liquids or gases |
| GB608196A (en) * | 1942-08-24 | 1948-09-10 | Emile Prat | Apparatus for separating resin and other impurities from producer gas |
| WO1980000542A1 (en) * | 1978-09-05 | 1980-04-03 | F Nyberg | Process of filtration |
-
1988
- 1988-06-04 GB GB8813267A patent/GB2245503A/en not_active Withdrawn
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB561585A (en) * | 1942-08-21 | 1944-05-25 | Frederick Heather | Filters of the brush type |
| GB608196A (en) * | 1942-08-24 | 1948-09-10 | Emile Prat | Apparatus for separating resin and other impurities from producer gas |
| GB567903A (en) * | 1943-07-23 | 1945-03-07 | Frederick Heather | Improvements in filters for fluids |
| GB574888A (en) * | 1943-12-02 | 1946-01-24 | Frederick Heather | Improvements in or relating to filters for liquids or gases |
| WO1980000542A1 (en) * | 1978-09-05 | 1980-04-03 | F Nyberg | Process of filtration |
Also Published As
| Publication number | Publication date |
|---|---|
| GB8813267D0 (en) | 1988-07-06 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| WAP | Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1) |