GB2327368A - Effluent treatment and recycling apparatus - Google Patents
Effluent treatment and recycling apparatus Download PDFInfo
- Publication number
- GB2327368A GB2327368A GB9714884A GB9714884A GB2327368A GB 2327368 A GB2327368 A GB 2327368A GB 9714884 A GB9714884 A GB 9714884A GB 9714884 A GB9714884 A GB 9714884A GB 2327368 A GB2327368 A GB 2327368A
- Authority
- GB
- United Kingdom
- Prior art keywords
- effluent
- treatment apparatus
- effluent treatment
- filter means
- receptacle
- 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- Withdrawn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
- 238000004064 recycling Methods 0.000 title abstract 2
- 238000005406 washing Methods 0.000 claims abstract description 12
- 238000000034 method Methods 0.000 claims abstract description 7
- 239000007787 solid Substances 0.000 claims abstract description 7
- 238000004140 cleaning Methods 0.000 claims abstract description 5
- 230000000717 retained effect Effects 0.000 claims abstract description 5
- 239000007788 liquid Substances 0.000 claims description 21
- 238000002955 isolation Methods 0.000 claims description 4
- 230000001419 dependent effect Effects 0.000 claims 4
- 239000000706 filtrate Substances 0.000 abstract 1
- 238000001914 filtration Methods 0.000 abstract 1
- 239000002699 waste material Substances 0.000 abstract 1
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 230000003019 stabilising effect Effects 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 206010040844 Skin exfoliation Diseases 0.000 description 1
- 239000000356 contaminant Substances 0.000 description 1
- 239000003599 detergent Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 239000011343 solid material Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
- B01D29/11—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with bag, cage, hose, tube, sleeve or like filtering elements
- B01D29/13—Supported filter elements
- B01D29/23—Supported filter elements arranged for outward flow filtration
- B01D29/27—Filter bags
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
- B01D29/50—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with multiple filtering elements, characterised by their mutual disposition
- B01D29/52—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with multiple filtering elements, characterised by their mutual disposition in parallel connection
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
- B01D29/88—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor having feed or discharge devices
- B01D29/92—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor having feed or discharge devices for discharging filtrate
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2201/00—Details relating to filtering apparatus
- B01D2201/48—Overflow systems
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Filtration Of Liquid (AREA)
Abstract
A treatment apparatus and method for filtering and recycling the effluent from crop washing comprises a receptacle 14 and removable filter means 20a. There is preferably a plurality of filter means, each comprising a bag 20a having a wall at least part of which is porous such that solid components of the effluent are retained within the bag. Each bag may be replaced individually, without interrupting the treatment operation, by firstly closing a sluice gate (23, fig 3), located inside the respective feed channel 19 and then removing the bag. The filtrate collects in the receptacle 14 and when it reaches a certain level flows over a weir 15 into another receptacle 16 from where it is pumped by a pump 31 to waste or back to the crop cleaning operation. The apparatus is preferably movable, with a drawbar 12 and chassis 11 provided for towing by a suitable vehicle.
Description
Title: Effluent Treatment Apparatus
This invention relates to an effluent treatment apparatus, and more particularly, but not exclusively, to a mobile effluent treatment apparatus.
A crop, for example, a root crop, may be washed in a washing means in which means are provided to wash a crop with a washing liquid. However, a problem is encountered in that the liquid in which the crop is washed will become contaminated with soil, peelings, root fibres and leaves and the like to provide a thus contaminated effluent. Contaminant must be removed from the effluent.
An object of the invention is to overcome or to reduce the above mentioned problem.
According to a first aspect of the invention, we provide an effluent treatment apparatus comprising a receptacle, a removable filter means, supply means to supply contaminated effluent to said filter means and a discharge means to discharge filtered effluent from the filter means into the receptacle.
The effluent treatment apparatus may comprise a plurality of filter means wherein each filter means may be removed individually from said effluent system.
Preferably a filter means may be removed without it being necessary to stop the supply of contaminated effluent to the system.
The or each filter means may comprise a bag having a wall at least a part of which is porous to provide said discharge means such that solid components of the contaminated effluent are retained within the bag, whilst liquid effluent may pass through the discharge means.
The bag may be at least partly immersed in liquid held in the receptacle.
The apparatus may be provided with an isolation means for the or each filter means whereby the filter means is isolatable from the supply means and is removable from the receptacle.
The or each filter means may comprise a support frame whereby the bag is supported in the receptacle.
The supply means may comprise a distribution channel, and a feed channel in flow connection with said distribution channel and the or each filter means.
Said isolation means may comprise a sluice gate operable to isolate the or each feed channel from said distribution channel.
The or each filter means may enclose an outlet of the or a respective feed channel whereby the effluent may be constrained to pass through the filter means.
The or each feed channel may be mounted on the or a respective support frame.
The effluent treatment apparatus may comprise a container to receive liquid effluent from an outlet of the receptacle.
The outlet may comprise a weir.
Pump means may be provided to feed effluent liquid from the apparatus.
Recirculation means may be provided to feed contaminated effluent from a washing means to the effluent treatment apparatus and to feed filtered effluent from the effluent treatment apparatus to the washing means.
The pump means may feed the effluent liquid from the apparatus to the washing means.
Access means may be provided to permit access to the receptacle, for example, for cleaning purposes.
The effluent treatment apparatus may be provided with ground engaging means such that said effluent treatment apparatus is moveable.
A draw bar and chassis may be provided such that the effluent treatment apparatus may be towed by a suitable vehicle.
According to a second aspect of the invention we provide a method of treating contaminated effluent in an effluent treatment apparatus comprising at least one filter means comprising passing the contaminated effluent through a removable filter means such that solid components of the contaminated effluent are retained within the filter means while liquid effluent passes through the filter means and isolating the filter means from the contaminated effluent and then removing the filter means from the apparatus for cleaning of the filter means.
An embodiment of the invention will now be described by way of example only with reference to the accompanying drawings wherein:
FIGURE 1 is a longitudinal cross-section through an effluent treatment apparatus according to the invention,
FIGURE 2 is a plan view of the effluent system of Figure 1, and
FIGURE 3 is a cross-section on line 3-3 of Figure 1.
In Figures 1 and 2, an effluent treatment apparatus is shown comprising a ground engaging means 10, in this case wheels shown in outline, a chassis 11 and a drawbar 12. Stabilising legs 11a enable the effluent system to be stably mounted in operation. Mounted on the chassis 11 is a watertight enclosure 13 comprising a frame having horizontal members 13a and vertical members 13h shown in dashed outline. The enclosure 13 is divided by a weir 15 into an enclosure 14 and a container 16.
Disposed above and at one side of the enclosure 14 is a distribution channel 17 which may be supplied with contaminated effluent via an inlet pipe 18. A plurality of feed channels 19 are in flow communication with the distribution channel 17. As may be seen from Figure 3, each of said feed channels 19 comprises a generally horizontal channel extending generally perpendicular to said distribution channel 17, at one end in flow communication therewith, and at the other end comprising a generally vertical part 19a. Attached to a lower end 19b of the feed channel part 19a is a filter means 20 comprising a filter bag 20a defining a volume 21. The neck 22 of the filter bag 20 is attached to the part 19a of the feed channel 19 such that all effluent passing through the supply channel 19 enters the volume 21. A plurality of sluice gate means 23 are provided each of which may be closed to isolate a respective feed channel 19 from the distribution channel 17.
Each filter means further comprises support means 28 comprising a frame having generally parallel longitudinal members 28a disposed generally perpendicular to transverse members 28b. The filter bag 20a is suspended from the support means 28 by fixing rods 24 and straps 25.
The filter bag 20a may be generally rectangular in horizontal crosssection and a fixing rod 24 and strap 25 being disposed in the vicinity of each corner of the filter bag 20a. The support means 28 may be supported by the horizontal members 13of the enclosure 13. Locating means 35 ensure that the support means 28 are correctly located when supported from the horizontal members 13a. The locating means are generally trapezoidal in cross-section with inclined sections 35a, 35b to direct each support frame 28 to its correct position.
A respective feed channel 19 is attached to the support frame 28 and is moveable therewith.
The support means 28 may be provided with engagement means (not shown) which may engage suitable lifting means, for example the tines of a fork lift truck, to enable the filter means 20 comprising the support means 28 and filter bag 20a to be lifted out of, or returned to, the effluent treatment apparatus as a unit.
The container 16 has an outlet 30 and a pump 31 is mounted over the drawbar 12 to feed water from the container 16.
The receptacle 14 may be provided with a drain coupling 32 to permit the first tank to be emptied.
The receptacle 14 is provided with access means 33 to permit entry to the enclosure 13 for example, for cleaning purposes.
In use, the effluent treatment apparatus may be drawn by its drawbar 12 to an appropriate site as desired for operation. The effluent treatment apparatus may be levelled and stabilised by the stabilising legs 11ffi. The inlet pipe 18 may be connected to a contaminated effluent outlet of, for example, a washing means, while the outlet of the pump 31 may be connected to the liquid effluent inlet of the washing apparatus. Effluent contaminated with solids is supplied to the distribution channel 17 via inlet pipe 18 and will pass through the feed channels 19 and enter the filter bags 2OL The material of the bag will permit the liquid in the effluent to pass through, whilst retaining the solids 36 in the enclosure 21 defined by each of the bags 20a. The liquid in the receptacle will rise to a level 34, whereupon when any further liquid entering the receptacle 14 will pass over the weir 15 and entering the receptacle 16. This liquid may then be extracted by the pump 31 and fed to the inlet of the washing means to be reused.
When it becomes desirable to change a filter bag 20a due to that bag containing a sufficient amount of solid material 36, the feed channel 19 is isolated from the distribution channel 17 by a sluice means 23. The support means 28, the feed channel 19 and the filter bag 20a are lifted out of the effluent treatment apparatus by means of, for example, a fork lift truck. The filter bag 20a may be removed from the support means 28 and emptied and cleaned if desired, and reattached to the support means. Alternatively, another filter bag 20a may be provided as a replacement bag for that removed. The support means 28 and filter bag 20a is then be replaced in the enclosure 13, the locating means 35 ensuring that the support frame comes to rest in the correct place with the feed channel 19 appropriately positioned to receive liquid from the distribution channel 17.
The sluice means 23 is then reopened, permitting contaminated effluent to flow from the distribution channel 17 through the feed channel 19 and into the cleaned or replacement filter bag 20.
When it is desired to move the effluent treatment apparatus to a new site, the receptacle 14 can be drained by coupling 32, while the container 16 may be emptied by pump 31. A suitable towing vehicle may then be attached to the drawbar 12 and the vehicle towed to the new site.
Each filter bag 20 typically has a capacity of 1.5m3, and the effluent system can process 700 litres per minute of effluent. The liquid may comprise water, but may comprise any other components, for example detergent, as desired.
In the example described above the whole of each filter bas is porous and thus provides a discharge means. However, if desired only a part or parts of the bag may be porous, the or each porous part providing the discharge means.
The features disclosed in the foregoing description, or the following claims, or the accompanying drawings, expressed in their specific forms or in terms of a means for performing the disclosed function, or a method or process for attaining the disclosed result, or a class or group of substances or compositions, as appropriate, may, separately or in any combination of such features, be utilised for realising the invention in diverse forms thereof.
Claims (23)
1. An effluent treatment apparatus comprising a receptacle, a removable filter means, supply means to supply contaminated effluent to said filter means and a discharge means to discharge filtered effluent from the filter means into the receptacle.
2. An effluent treatment apparatus according to Claim 1 wherein effluent treatment apparatus comprises a plurality of filter means wherein each filter means may be removed individually from said effluent system.
3. An effluent treatment apparatus according to Claim 2 wherein a filter means may be removed without it being necessary to stop the supply of contaminated effluent to the system.
4. An effluent treatment apparatus according to Claims 1 to 3 wherein the or each filter means comprises a bag having a wall at least a part of which is porous to provide said discharge means such that solid components of the contaminated effluent are retained within the bag, whilst liquid effluent may pass through the discharge means.
5. An effluent treatment apparatus according to any one of the preceding
Claims wherein the bag is at least partly immersed in liquid held in the receptacle.
6. An effluent treatment apparatus according to any one of the preceding
Claims wherein the apparatus is provided with an isolation means for the or each filter means whereby the filter means is isolatable from the supply means and is removable from the receptacle.
7. An effluent treatment apparatus according to Claim 4, or Claim 5 or
Claim 6 where dependent directly or indirectly on Claim 4 wherein the or each filter means comprises a support frame whereby the bag is supported in the receptacle.
8. An effluent treatment apparatus according to any one of the preceding
Claims wherein the supply means comprises a distribution channel, and a feed channel in flow connection with said distribution channel and the or each filter means.
9. An effluent treatment apparatus according to Claim 8 where dependent directly or indirectly on Claim 6 wherein said isolation means comprises a sluice gate operable to isolate the or each feed channel from said distribution channel.
10. An effluent treatment apparatus according to Claim 8 or Claim 9 wherein the or each filter means may enclose an outlet of the or a respective feed channel whereby the effluent may be constrained to pass through the filter means.
11. An effluent treatment apparatus according to any one of Claims 8 to 10 when dependent directly or indirectly on Claim 7 wherein the or each feed channel is mounted on the or a respective support frame.
12. An effluent treatment apparatus according to any one of the preceding
Claims wherein the effluent treatment apparatus comprises a container to receive liquid effluent from an outlet of the receptacle.
13. An effluent treatment apparatus according to Claim 12 wherein the outlet comprises a weir.
14. An effluent treatment apparatus according to any one of the preceding
Claims wherein pump means is provided to feed effluent liquid from the apparatus.
15. An effluent treatment apparatus according to any one of the preceding
Claims wherein recirculation means is provided to feed contaminated effluent from a washing means to the effluent treatment apparatus and to feed filtered effluent from the effluent treatment apparatus to the washing means.
16. An effluent treatment apparatus according to Claim 15 where dependent Claim 14 wherein the pump means feeds the effluent liquid from the apparatus to the washing means.
17. An effluent treatment apparatus according to any one of the preceding
Claims wherein access means is provided to permit access to the receptacle.
18. An effluent treatment apparatus according to any one of the preceding
Claims wherein the effluent treatment apparatus is provided with ground engaging means such that said effluent treatment apparatus is moveable.
19. An effluent treatment apparatus according to Claim 18 wherein a draw bar and chassis are provided such that the effluent treatment apparatus may be towed by a suitable vehicle.
20. A method of treating contaminated effluent in an effluent treatment apparatus comprising at least one filter means comprising passing the contaminated effluent through a removable filter means such that solid components of the contaminated effluent are retained within the filter means while liquid effluent passes through the filter means and isolating the filter means from the contaminated effluent and then removing the filter means from the apparatus for cleaning of the filter means.
21. An effluent treatment apparatus substantially as hereinbefore described with reference to the accompanying drawings.
22. A method of treating contaminated effluent substantially as hereinbefore described with reference to the accompanying drawings.
23. Any novel feature or novel combination of features described herein and/or in the accompanying drawings.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB9714884A GB2327368A (en) | 1997-07-16 | 1997-07-16 | Effluent treatment and recycling apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB9714884A GB2327368A (en) | 1997-07-16 | 1997-07-16 | Effluent treatment and recycling apparatus |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| GB9714884D0 GB9714884D0 (en) | 1997-09-17 |
| GB2327368A true GB2327368A (en) | 1999-01-27 |
Family
ID=10815882
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB9714884A Withdrawn GB2327368A (en) | 1997-07-16 | 1997-07-16 | Effluent treatment and recycling apparatus |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB2327368A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110812916A (en) * | 2019-12-04 | 2020-02-21 | 江西纳森科技有限公司 | Sealed isolated recovery filter equipment that glues |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB733675A (en) * | 1952-04-03 | 1955-07-13 | Internaz Superfiltri Comp | Improvements in or relating to pressure filters |
| GB2045102A (en) * | 1979-03-27 | 1980-10-29 | Forsheda Gummifabrik Ab | Filtering device |
| US4322293A (en) * | 1981-02-19 | 1982-03-30 | Morgan Jr Howard W | Multiple element filter |
| EP0157642A2 (en) * | 1984-04-06 | 1985-10-09 | Dorr-Oliver Incorporated | Filtrate discharge system for pressure filter |
| US4574047A (en) * | 1983-11-04 | 1986-03-04 | Rosaen Borje O | Filtering device |
| US4664798A (en) * | 1984-10-15 | 1987-05-12 | Bergh Leslie H | Apparatus and method for filtering a fluid |
| WO1997023264A1 (en) * | 1995-12-22 | 1997-07-03 | Fluid Recycling Services | Method of recycling fluids |
-
1997
- 1997-07-16 GB GB9714884A patent/GB2327368A/en not_active Withdrawn
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB733675A (en) * | 1952-04-03 | 1955-07-13 | Internaz Superfiltri Comp | Improvements in or relating to pressure filters |
| GB2045102A (en) * | 1979-03-27 | 1980-10-29 | Forsheda Gummifabrik Ab | Filtering device |
| US4322293A (en) * | 1981-02-19 | 1982-03-30 | Morgan Jr Howard W | Multiple element filter |
| US4574047A (en) * | 1983-11-04 | 1986-03-04 | Rosaen Borje O | Filtering device |
| EP0157642A2 (en) * | 1984-04-06 | 1985-10-09 | Dorr-Oliver Incorporated | Filtrate discharge system for pressure filter |
| US4664798A (en) * | 1984-10-15 | 1987-05-12 | Bergh Leslie H | Apparatus and method for filtering a fluid |
| WO1997023264A1 (en) * | 1995-12-22 | 1997-07-03 | Fluid Recycling Services | Method of recycling fluids |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110812916A (en) * | 2019-12-04 | 2020-02-21 | 江西纳森科技有限公司 | Sealed isolated recovery filter equipment that glues |
Also Published As
| Publication number | Publication date |
|---|---|
| GB9714884D0 (en) | 1997-09-17 |
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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) |