GB2560918A - Portable waste water treatment apparatus - Google Patents
Portable waste water treatment apparatus Download PDFInfo
- Publication number
- GB2560918A GB2560918A GB1704857.0A GB201704857A GB2560918A GB 2560918 A GB2560918 A GB 2560918A GB 201704857 A GB201704857 A GB 201704857A GB 2560918 A GB2560918 A GB 2560918A
- Authority
- GB
- United Kingdom
- Prior art keywords
- settling tank
- central section
- section
- waste water
- side sections
- 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- Withdrawn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
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D21/00—Separation of suspended solid particles from liquids by sedimentation
- B01D21/0003—Making of sedimentation devices, structural details thereof, e.g. prefabricated parts
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D21/00—Separation of suspended solid particles from liquids by sedimentation
- B01D21/02—Settling tanks with single outlets for the separated liquid
- B01D21/04—Settling tanks with single outlets for the separated liquid with moving scrapers
- B01D21/06—Settling tanks with single outlets for the separated liquid with moving scrapers with rotating scrapers
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
- C02F1/5281—Installations for water purification using chemical agents
Abstract
An apparatus for treating waste water comprises a substantially circular settling tank, wherein the apparatus is separable into a central section 32, and first 34 and second 36 side sections located on either side of the central section. The first section is separable from the central section along a first joining flange 42 and the second section is separable from the central section along a second joining flange 44. The first and second joining flanges extend parallel to one another and are located on either side of a central axis of the settling tank. The settling tank may have a substantially conical base (8, Fig. 1) with a sludge outlet (10, Fig. 1) at a lower end thereof. Preferably the apparatus comprises a bridge member 14 extending across the central section. A rake mechanism comprising at least one scraper blade (26, Fig. 5) may be mounted on the bridge. Preferably the apparatus further comprises a base section 30 upon which the central section is detachably supported. Ideally elastomeric gaskets are provided between the first and second side sections and the central section along the joining flanges.
Description
(71) Applicant(s):
CDE Global Limited
Ballyreagh Industrial Estate, Sandholes Road, COOKSTOWN, County Tyrone, BT80 9DG, United Kingdom (72) Inventor(s):
Kevin Vallelly Eoin Heron (74) Agent and/or Address for Service:
FRKelly
Mount Charles, BELFAST, Northern Ireland, BT7 1NZ, United Kingdom (51) INT CL:
B01D 21/00 (2006.01) B01D 21/06 (2006.01)
C02F1/52 (2006.01) (56) Documents Cited:
GB 1134511 A GB 0462199 A
FR 002429610 A1 KR 100927122 B (58) Field of Search:
INT CL B01D, B65D, C02F Other: EPODOC, WPI (54) Title ofthe Invention: Portable waste water treatment apparatus Abstract Title: Portable waste water treatment apparatus (57) An apparatus for treating waste water comprises a substantially circular settling tank, wherein the apparatus is separable into a central section 32, and first 34 and second 36 side sections located on either side ofthe central section. The first section is separable from the central section along a first joining flange 42 and the second section is separable from the central section along a second joining flange 44. The first and second joining flanges extend parallel to one another and are located on either side of a central axis of the settling tank. The settling tank may have a substantially conical base (8, Fig. 1) with a sludge outlet (10, Fig. 1) at a lower end thereof. Preferably the apparatus comprises a bridge member 14 extending across the central section. A rake mechanism comprising at least one scraper blade (26, Fig. 5) may be mounted on the bridge. Preferably the apparatus further comprises a base section 30 upon which the central section is detachably supported. Ideally elastomeric gaskets are provided between the first and second side sections and the central section along the joining flanges.
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Portable Waste Water Treatment Apparatus
FIELD OF THE INVENTION
This invention relates to a portable waste water treatment apparatus for use with a sand and/or aggregate washing and grading apparatus and in particular to a waste water treatment apparatus that can be readily dismantled and transported between sites and assembled with minimal assembly time.
BACKGROUND OF THE INVENTION
Waste water streams containing entrained solid impurities and contaminants in suspension are produced from numerous quarrying, mining, chemical or industrial processes. It is often desirable to reuse such water, particularly in regions prone to water shortages.
Sand washing and grading plants include different stages comprising multiple grading and dewatering screens and hydrocyclones which typically require a large volume of water to fluidise the sand in each stage of the process and to transfer the sand between different stages of the process. Therefor there is often a need to reuse water in such processes to reduce fresh water consumption.
However, before the waste water can be re-used, impurities and contaminants must be removed from the water. This is typically done by passing the water into a large settling tank wherein the fines are able to settle out under the action of gravity, typically after adding a flocculating agent to which the fines bind to bring them out of suspension and/or by chemically treating the waste water. The fines are collected in the bottom of the tank and subsequently removed for disposal while relatively clean water overflows from the top of the tank and is typically collected in a separate storage tank for subsequent reuse. Such settling tank arrangements are typically very large and need to be assembled on site from numerous components. Typically, to provide adequate capacity, the assembled settling tanks need to be between 4 and 15 metres in diameter.
An object of the present invention is to provide an improved waste water treatment apparatus that can be quickly and easily assembled on site and moved between sites when required.
SUMMARY OF THE INVENTION
According to a first aspect of the present invention there is provided an apparatus for treating waste water comprising a substantially circular settling tank for receiving waste water, wherein said apparatus is separable into a central section and first and second side sections located on either side of said central section, said first side section being separable from said central section along a first joining flange, said second side section being separable from said central section along a second joining flange, wherein said first and second joining flanges extend parallel to one another and are located on either side of a central axis of the settling tank and said central section and first and second side sections define separable sections of said settling tank.
The first and second side sections of the apparatus may have reflection symmetry about said first and second joining flanges.
Preferably the width of each of said first and second sections is substantially equal to the width of the central section.
In one embodiment the apparatus comprises a first wall defining an outer wall of the settling tank, and a second wall arranged coaxially with said first wall and spaced outwardly from said first wall, wherein a substantially annular water storage reservoir is defined between said first and second walls.
The settling tank may have a substantially conical base having a sludge outlet at a lower end thereof.
A bridge member may be provided extending diametrically across the central section, said bridge member defining an access platform above the settling tank. A rake mechanism may be provided comprising at least one rake arm having at least one scraper blade is mounted on the bridge and arranged to traverse a bottom wall of the settling tank. The rake mechanism may comprise a plurality of radially extending rake arms, said rake arms being adapted to be brought into alignment with a longitudinal axis of said bridge when the first and second side sections are to be separated from the central section.
A de-aeration chamber may be provided for receiving waste water prior to entry into the settling tank, said de-aeration chamber being mounted at one end of said bridge member. A transfer pipe may extend between the de-aeration chamber and a waste water outlet centrally arranged within the settling tank, wherein said transfer pipe is supported on the bridge member. Said waste water outlet may be defined by a cylindrical chamber having an open lower end communicating with the settling tank, wherein waste water is introduced into the settling tank via said cylindrical chamber.
In a preferred embodiment there is provided a base section upon which said central section of the apparatus is detachably supported. Upwardly and outwardly extending support struts may be detachably mounted between the base section and the first and second side sections for supporting said first and second side sections upon the base section. In one embodiment lower ends of said support struts may be detachably coupled to outwardly extending support legs provided on said base section. Such support legs may be pivotally coupled to the base section to be pivotable between outwardly extending operative positions and upwardly extending folded positions.
Preferably electrical, control and mechanical components of the apparatus as mounted on the base section. In one embodiment one or more water pumps (for example for pumping clean water from the water storage reservoir or for pumping waste water to the de-aeration chamber), a sludge pump, and a controller are preferably mounted on the base section. Pipe couplings may be provided between the sludge outlet of the settling tank and the sludge pump and between a waste water inlet of the settling tank and/or the water storage reservoir and the respective pump, said pipe couplings being arranged between the base section and the central section.
Elastomeric gaskets may be provided between said first and second side sections and said central section along said joining flanges.
Releasable clamp members may be provided for coupling said first and second side sections to said central section.
The apparatus may further comprise a dosing apparatus for adding a flocculant to waste water to be treated within the settling tank.
Preferably an upper edge of said first wall defines an overflow weir for passing water between the settling tank and the water storage reservoir.
BRIEF DESCRIPTION OF THE DRAWINGS
A portable waste water treatment apparatus in accordance with an embodiment of the present invention will now be described, by way of example only, with reference to the accompanying drawings, in which:20 Figure 1 is a side view of waste water treatment apparatus in accordance with a first embodiment of the present invention;
Figure 2 is an end view of the waste water treatment apparatus of Figure 1;
Figure 3 is a plan view of the waste water treatment apparatus of Figure 1;
Figure 4 is an exploded end view of the waste water treatment apparatus of Figure 1;
Figure 5 is an exploded side view of the waste water treatment apparatus of Figure 1; and
Figure 6 is an exploded plan view of the waste water treatment apparatus of Figure
1.
DETAILED DESCRIPTION OF THE DRAWINGS
An apparatus for washing and grading sand in accordance with an embodiment of the present invention is illustrated in the drawings.
As illustrated in Figure 1 to 3, a waste water treatment apparatus in accordance with an embodiment of the present invention comprises a circular body (when view in plan) having a first wall 2 defining the outer wall of a settling tank 4 and a coaxially arranged second wall 5 arranged outside of said first wall 2, a space being defined between the first and second walls 2,5 to define an annular water storage reservoir 6 arranged around the periphery of the settling tank 4. The upper edge of the first wall 2 defines a peripheral overflow weir over which water can pass between the settling tank 4 and the water storage reservoir 6.
A conical lower wall 8 defines a base wall of the settling tank 4, said lower wall 8 having a central sludge outlet 10 at its lowest point leading to a sludge pump 12 for removing sludge from a lower region of the settling tank 4.
An access and support bridge 14 is mounted diametrically across the settling tank 4, providing safe access for site personnel to carry out water testing and apparatus maintenance, while providing support for other components to be mounted within the settling tank 4, as will be described below in more detail below.
A de-aeration chamber 16 is located at one end of the bridge 14, waste water being delivered into the de-aeration chamber 16 prior to entry into the settling tank 4. Polyelectrolyte may be dosed into the waste water within the de-aeration chamber
16. The de-aeration chamber 16 may contain baffles and/or weirs serving to remove air bubbles from the waste water and promote laminar flow, preventing the floating of suspended solids within the waste water, and to slow the flow of waste water into the settling tank 4 to help ensure efficient settling of sludge therein.
From the de-aeration chamber 16 the waste water flows to the centre of the settling tank 4 via a transfer pipe 18 before being discharged into the settling tank 4 via a centrally mounted downwardly open cylindrical discharge chamber 20, such that the waster water is introduced into the settling tank 4 in a downwardly flowing direction.
This further slows the flow of waste water and promotes laminar flow which optimises the downward settlement of sludge out of the waste water into a lower region of the settling tank 4. The transfer pipe 18 and cylindrical discharge chamber 20 are supported beneath the bridge 14.
Discharging the waste water into the centre of the settling tank 4 via the transfer pipe 18 and discharge chamber 20 ensures that the material is delivered into the settling tank at a maximum distance from the peripheral first wall 2 (defining the overflow weir) to ensure maximum settlement can occur and serving to minimise the carry over of any suspended solids to the water storage reservoir 6.
A discharge outlet or outlets 22 is provided in the water storage reservoir, for example in the second wall 5.
A rake mechanism is mounted within the settling tank having radially extending arms 24 upon which are mounted scraper blades 26, wherein the arms 24 are mounted for rotation about a central axis of the settling tank 4 such that the arms 24 are swept around the base of the settling tank 4 for moving sludge towards the sludge outlet 10 in the base of the settling tank 4. The rake mechanism is preferably mounted on the bridge 14. A motor and gearbox assembly for the rake mechanism may be mounted on the bridge and may be detachable therefrom for transportation.
The load imposed the arms 24 of the rake mechanism may be used for sludge density monitoring, which may also provide overload protection to the rake mechanism and associated gearbox. The low profile scraper blades 26 mounted on the rake arms 24 help to condition the sludge and limits disruption to settled sludge.
As illustrated in Figures 4 to 6, in order to facilitate assembly, disassembly and transportation of the apparatus, the apparatus is made from four sections that can be detached from one another for transportation, namely a base section 30, a central section 32 and a pair of side sections 34,36, the central section 32 and side sections 34,36 defining between them separable sections of the settling tank 4 and water storage reservoir 6.
The base section 30 comprises a support chassis 38 upon which is mounted electrical, control and mechanical components, such as waste water supply pump, sludge pump, and a controller, the support chassis 38 being adapted to provide a stable platform for the central section 32 and side sections 34,36 defining the settling tank 4 and water storage reservoir 6.
The central section 32 and side sections 34,36 defining the settling tank 4 and water storage reservoir 6 are joined along cooperating joining flanges 42,44 extending parallel to one another and to a longitudinal axis of the bridge 14, such that the settling tank 4 and water storage reservoir 6 can be separated into three substantially equal width parts, each preferably being dimensioned to conform to the footprint and height of a standard shipping container to enable each section to be readily transported by standard road transport means, such as articulated lorries. Elastomeric sealing gaskets are preferably provided between cooperating joining flanges 42,44 and quickly detachable clamp members 46 are provided for clamping the joining flanges 42,44 together to form a water tight seal between the cooperating central section 32 and side sections 34,36.
Upright portions 48 of the chassis 38 of the base section 30 are adapted to engage vertically depending support legs 50 of the central section 32 such that the central section 32 can be mounted upon the base section 30. Separable pipe couplings 52 are provided between the sludge outlet 10 of the settling tank 4 and the sludge pump 12 mounted on the base section 30 and between the de-aeration chamber 16 mounted on the central section 32 and a respective water pump and/or between an outlet of the water storage reservoir and a transfer pump 40 mounted on the base section 30. Such pipe couplings 52 may be arranged to separate in or adjacent a horizontal plane defined between the upright chassis portions 48 of the base section 30 and the support legs 50 of the central section 32 to facilitate coupling of the components of the central section 32 with those of the base section 30.
The bridge 14, rake mechanism (rake arms 24), de-aeration chamber 16, transfer pipe 18 and discharge chamber 20 are all mounted within the central section 32, enabling such components to remain in place during dissembling and transportation of the apparatus. The arms 24 of the rake mechanism may be arranged to be brought into alignment with the bridge 14 when in transport configuration, such that the arms of the rake mechanism remain within the footprint of the body of the central section 32 when in such transport configuration, and may be arranged to extend radially from the central axis of the settling tank in equi-spaced relationship to one another when in an operative configuration.
A lifting attachment 54 may be provided on the motor and gearbox of the rake mechanism on a central region of the bridge 14 of the central section 32 to facilitate lifting of such motor and gearbox. Similar lifting attachments or fitting may be provided on each section of the apparatus to facilitate lifting thereof.
The base section 30 includes foldable support legs 56 that are pivotably movable between an upwardly extending transport configuration, shown in Figure 4, and an outwardly extending operative configuration, shown in Figure 2. Support struts 58 are detachably mounted between the support legs 56 of the base section 30 and the underside of the side sections 32,34 of the settling tank 4 to support the side sections 32,34, as shown in Figures 1 and 2.
The pumps and associated valves mounted on the base section 30 may be preassembled, plumbed and tested in the factory to minimise installation time of the apparatus. Furthermore, electrical components mounted on the base section 30 of the apparatus may be pre-wired and tested prior to dispatch from the factory, ensuring minimal intervention required by installation and commissioning engineers.
The four sections of the apparatus may be delivered to a site individually and the base section 30 located in a desired position and the support legs 56 dropped to their outwardly extending operative configuration. Next the central section 32 may be lowered into engagement with the base section 30, as shown in Figure 5, such that the downwardly depending support legs 50 of the central section 32 engage the chassis 38 of the base section 40 while the pipe couplings 52 of the waste water supply and sludge outlet engage one another to facilitate coupling thereof.
The side sections 34,36 may then lifted into engagement with the central section 32 and coupled thereto via the cooperating joining flanges 42,44 and clamps 46. The support struts 58 may then coupled between the outwardly extending support legs 56 of the base section 30 and the side sections 34,36 to support the side sections 34,36. The apparatus is then essentially ready for use.
Waste water may be delivered into the settling tank 4 for recycling via the deaeration chamber 16, having a flocculant dosing and mixing apparatus associated therewith, whereby silt and sludge is brought out of suspension to be collected in and removed from the bottom of the settling tank 4 via the sludge outlet 10, while water from the settling tank 4 overflows into the peripheral water storage reservoir 6 surrounding the settling tank 4 for recycling. Additional water may be added to the water storage reservoir 6 if required.
Integrated level sensors may be provided for monitoring the water levels in the settling tank 4 and/or water storage reservoir 6. Submersible pumps may be mounted in the settling tank and/or water storage reservoir.
The capacity and dimensions of the apparatus may be varied depending on the customer requirements. However, in a preferred embodiment each section of the apparatus may be dimensioned to fall within standard shipping container dimensions to facilitate transportation.
The apparatus of the present invention provides a fully portable, complete water storage and pumping system for the recycling of recovered water around a washing plant.
The four sections of the apparatus are preferably dispatched from the factory fully assembled, piped, wired and tested ensuring minimal installation time.
A separate flocculant dosing station may be provided for dosing the waste water with a polyelectrolyte prior to entry into the settling tank to facilitate settlement of sludge and recycling of water. A separate region of the water storage reservoir may be used to store clean water for use in the dosing station.
The apparatus in accordance with the present invention offers efficient primary stage water treatment particularly for sand, quarry and recycling processes. The apparatus can bring significant cost savings, reducing the area previously required to accommodate ponds or lagoons and also reducing the volume of fresh water required to feed a washing plant by more than 80%.
Depending upon the capacity of the settling tank, the apparatus can treat between 100m3 and 1500m3 of waste water per hour. The weight and size of each section is preferably such that each section can be readily lifted and moved into position by a telehandler or similar readily available load handling vehicle, avoiding the need for expensive crane hire.
The invention is not limited to the embodiment described herein but can be amended or modified without departing from the scope of the present invention as defined by the claims.
Claims (22)
1. An apparatus for treating waste water comprising a substantially circular settling tank for receiving waste water, wherein said apparatus is separable into a central
5 section and first and second side sections located on either side of said central section, said first side section being separable from said central section along a first joining flange, said second side section being separable from said central section along a second joining flange, wherein said first and second joining flanges extend parallel to one another and are located on either side of a central axis of the settling
10 tank and said central section and first and second side sections define separable sections of said settling tank.
2. An apparatus as claimed in claim 1, wherein said first and second side sections of the apparatus have reflection symmetry about said first and second joining
15 flanges.
3. An apparatus as claimed in any preceding claim, wherein the width of each of said first and second sections is substantially equal to the width of the central section.
4. An apparatus as claimed in any preceding claim, wherein the apparatus comprises a first wall defining an outer wall of the settling tank, and a second wall arranged coaxially with said first wall and spaced outwardly from said first wall, wherein a substantially annular water storage reservoir is defined between said first
25 and second walls.
5. An apparatus as claimed in any preceding claim, wherein said settling tank has a substantially conical base having a sludge outlet at a lower end thereof.
30
6. An apparatus as claimed in any preceding claim, further comprising a bridge member extending diametrically across said central section, said bridge member defining an access platform above the settling tank.
7. An apparatus as claimed in claim 6, wherein a rake mechanism comprising at least one rake arm having at least one scraper blade is mounted on the bridge and arranged to traverse a bottom wall of the settling tank.
5
8. An apparatus as claimed in claim 7, wherein said rake mechanism comprising a plurality of radially extending rake arms, said rake arms being adapted to be brought into alignment with a longitudinal axis of said bridge when the first and second side sections are to be separated from the central section.
10
9. An apparatus as claimed in any of claims 6 to 9, further comprising a de-aeration chamber for receiving waste water prior to entry into the settling tank, said deaeration chamber being mounted at one end of said bridge member.
10. An apparatus as claimed in claim 9, further comprising a transfer pipe
15 extending between the de-aeration chamber and a waste water outlet centrally arranged within the settling tank, wherein said transfer pipe is supported on the bridge member.
11. An apparatus as claimed in claim 10, wherein said waste water outlet is defined
20 by a cylindrical chamber having an open lower end communicating with the settling tank, wherein waste water is introduced into the settling tank via said cylindrical chamber.
12. An apparatus as claimed in any preceding claim, further comprising a base
25 section upon which said central section of the apparatus is detachably supported.
13. An apparatus as claimed in claim 12, wherein upwardly and outwardly extending support struts are detachably mounted between the base section and the first and second side sections for supporting said first and second side sections
30 upon the base section.
14. An apparatus as claimed in claim 13, wherein lower ends of said support struts are detachably coupled to outwardly extending support legs provided on said base section.
15. An apparatus as claimed in claim 14, wherein said support legs are pivotally coupled to the base section to be pivotable between outwardly extending operative positions and upwardly extending folded positions.
16. An apparatus as claimed in any of claims 12 to 15, wherein electrical, control and mechanical components of the apparatus as mounted on the base section.
17. An apparatus as claimed in claim 16, wherein one or more pumps and one or
10 more controllers are mounted on the base section.
18. An apparatus as claimed in claim 17, wherein pipe couplings between the sludge outlet of the settling tank and/or waste water inlet of the settling tank and/or outlet of the water storage reservoir and respective pumps are arranged between
15 the base section and the central section.
19. An apparatus as claimed in any preceding claim, wherein elastomeric gaskets are provided between said first and second side sections and said central section along said joining flanges.
20. An apparatus as claimed in any preceding claim, wherein releasable clamp members are provided for coupling said first and second side sections to said central section.
25
21. An apparatus as claimed in any preceding claim, further comprising a dosing apparatus for adding a flocculant to waste water to be treated within the settling tank.
22. An apparatus as claimed in claim 4, wherein an upper edge of said first wall
30 defines an overflow weir for passing water between the settling tank and the water storage reservoir.
Intellectual
Property
Office
Application No: GB1704857.0 Examiner: Mr Peter Davies
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1704857.0A GB2560918A (en) | 2017-03-27 | 2017-03-27 | Portable waste water treatment apparatus |
| PCT/EP2018/057455 WO2018177933A1 (en) | 2017-03-27 | 2018-03-23 | Portable waste water treatment apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1704857.0A GB2560918A (en) | 2017-03-27 | 2017-03-27 | Portable waste water treatment apparatus |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| GB201704857D0 GB201704857D0 (en) | 2017-05-10 |
| GB2560918A true GB2560918A (en) | 2018-10-03 |
Family
ID=58687859
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1704857.0A Withdrawn GB2560918A (en) | 2017-03-27 | 2017-03-27 | Portable waste water treatment apparatus |
Country Status (2)
| Country | Link |
|---|---|
| GB (1) | GB2560918A (en) |
| WO (1) | WO2018177933A1 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2581516B (en) * | 2019-02-22 | 2021-12-01 | Cde Global Ltd | Portable waste treatment apparatus |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB462199A (en) * | 1935-12-07 | 1937-03-04 | John Michael Callow | Improvements in or relating to settling tanks |
| GB1134511A (en) * | 1965-02-17 | 1968-11-27 | Union Tank Car Co | A sewage treatment tank |
| FR2429610A1 (en) * | 1978-06-26 | 1980-01-25 | Degremont | Circular settling tank with central sump and sludge scraper - coupled to rotary, diametral bridge by torque metal transmission |
| KR100927122B1 (en) * | 2009-08-10 | 2009-11-18 | 덕 용 김 | Decontamination device of floating matter for settling tank |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4036390A (en) * | 1975-10-17 | 1977-07-19 | Morse California Co. | Plastic tank panels and joint assembly |
| FR2606292A1 (en) * | 1986-11-07 | 1988-05-13 | Colson Francois | Prefabricated modular static settler component |
| US7311827B2 (en) * | 2005-02-07 | 2007-12-25 | Glenn Clark | Portable tank apparatus and method of use |
-
2017
- 2017-03-27 GB GB1704857.0A patent/GB2560918A/en not_active Withdrawn
-
2018
- 2018-03-23 WO PCT/EP2018/057455 patent/WO2018177933A1/en active Application Filing
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB462199A (en) * | 1935-12-07 | 1937-03-04 | John Michael Callow | Improvements in or relating to settling tanks |
| GB1134511A (en) * | 1965-02-17 | 1968-11-27 | Union Tank Car Co | A sewage treatment tank |
| FR2429610A1 (en) * | 1978-06-26 | 1980-01-25 | Degremont | Circular settling tank with central sump and sludge scraper - coupled to rotary, diametral bridge by torque metal transmission |
| KR100927122B1 (en) * | 2009-08-10 | 2009-11-18 | 덕 용 김 | Decontamination device of floating matter for settling tank |
Also Published As
| Publication number | Publication date |
|---|---|
| GB201704857D0 (en) | 2017-05-10 |
| WO2018177933A1 (en) | 2018-10-04 |
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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) |