EP4278045A1 - Dispositif de collecte de déchets flottants pour la dépollution des cours d'eau - Google Patents
Dispositif de collecte de déchets flottants pour la dépollution des cours d'eauInfo
- Publication number
- EP4278045A1 EP4278045A1 EP22701346.3A EP22701346A EP4278045A1 EP 4278045 A1 EP4278045 A1 EP 4278045A1 EP 22701346 A EP22701346 A EP 22701346A EP 4278045 A1 EP4278045 A1 EP 4278045A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- upstream
- arm
- main flow
- arms
- angle
- 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.)
- Granted
Links
Classifications
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B15/00—Cleaning or keeping clear the surface of open water; Apparatus therefor
- E02B15/04—Devices for cleaning or keeping clear the surface of open water from oil or like floating materials by separating or removing these materials
- E02B15/048—Oil collectors moved over the water skimming the water surface
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B15/00—Cleaning or keeping clear the surface of open water; Apparatus therefor
- E02B15/04—Devices for cleaning or keeping clear the surface of open water from oil or like floating materials by separating or removing these materials
- E02B15/08—Devices for reducing the polluted area with or without additional devices for removing the material
- E02B15/0835—Devices for reducing the polluted area with or without additional devices for removing the material fixed to permanent structure, e.g. harbour wall or river bank
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B8/00—Details of barrages or weirs ; Energy dissipating devices carried by lock or dry-dock gates
- E02B8/02—Sediment base gates; Sand sluices; Structures for retaining arresting waterborne material
- E02B8/023—Arresting devices for waterborne materials
Definitions
- the present invention relates to the technical field of devices for collecting floating solid and polluting materials on a watercourse or on a body of water and relates in particular to a device for collecting floating waste for the depollution of watercourses. .
- dams To fight against the pollution of rivers there are devices such as floating dams which allow the recovery of floating waste on the surface of the water. These dams generally include a storage area to contain the collected waste. Once full, the storage area must be emptied by regular emptying and waste removal operations.
- Such a device is for example described in the document EP3643594 which makes it possible to eliminate unwanted floating objects and comprises two screens positioned as a trap which narrows from a relatively wide entrance side towards a temporary storage area.
- the device described allows the collection of any type of floating waste and in particular floating trunks and also floating trees such as those uprooted during floods.
- the device of document FR2730509 also describes a floating dam suitable for the grouping and retention of floating bodies in which there is a storage area and a means forming a screen suitable for concealing all or part of the storage area. This dam is also intended to retain tree trunks.
- the object of the invention is to overcome these drawbacks by providing a floating waste collection device provided with adjustable protection means to prevent the collection of bulky waste such as tree trunks and to adapt the impact of the device on the flow.
- the object of the invention is therefore a device for collecting floating debris entrained by a current in a main flow, mainly comprising a central platform delimiting a central corridor located in the axis of the main flow, two upstream arms located at the entrance to said central corridor, a storage receptacle in which the debris is directed and stored, and first adjustable protection means located upstream of the device to prevent bulky debris from being collected by the device.
- the first means comprise at least one cable stretched between the two upstream arms, the cable being located above the surface of the water and substantially parallel to it
- the device comprises second adjustable protection means located downstream of the device adapted to reduce the forces to which the storage receptacle is subjected.
- FIG. 1 represents a top view of the device according to the invention
- FIG. 2 represents a detail view of the front of the device according to the invention
- FIG. 3 shows a detail view of the means for adjusting the angular position of the arms of the device according to the invention
- [Fig. 4] represents the angles of variation of the arms of the device according to the invention.
- upstream and downstream designate the parts of the device located respectively on the upstream side and on the downstream side of the watercourse illustrated at the top and bottom respectively when the figure faces to the reader.
- the arrows 17 illustrate the direction from upstream to downstream of the watercourse located between two banks and of which only the left bank 15 is shown in the figures. In the case where the device is placed on a body of water other than a watercourse, it is considered that there is also a main flow in the direction of the arrows 17. In general, the arrows 17 represent the axis and direction of the current of the main flow.
- FIG. 1 illustrates the device 10 according to the invention seen from above.
- the device 10 comprises a central platform delimiting a central channel 13 oriented in the axis of the main flow.
- the central platform comprises a slatted floor 12 of the grating type which delimits the emerged part of the central channel and two floating parts 14 which surround the floor on its lateral edges parallel to the axis of the main flow.
- the floating part 14 located on the left is located on the bank 15 side and the other floating part is located on the right, therefore on the opposite side towards the center of the watercourse.
- the two floating parts 14 delimit the edges of the central channel 13.
- the floating waste trapped by the device 10 according to the invention arrives in the central channel 13 where they travel from its inlet to its outlet.
- the slatted floor includes a technical hatch 23 so that an operator can intervene in the event of an obstruction in the central channel.
- the device 10 comprises two upstream arms 22 located at the entrance to said central corridor pivotally mounted thanks to pivot connections 62 located respectively on each of the lateral floating parts 14.
- a floating walkway 11 connects one of the floating parts 14 to the bank 15 in order to making the device according to the invention accessible by a person from the bank.
- the walkway extends in the continuity of one of the floating parts 14, that on the left in the figure, and transversely thereto.
- the device 10 also comprises two downstream arms 24 located downstream of the device at the exit from the central corridor 13 and pivotally mounted by means of pivot links 62 located respectively on each of the lateral floating parts 14.
- the upstream arms are rigid and have a substantially vertical face forming a screen and comprising a submerged part and an aerial part so as to capture all the floating waste. present in the space between the two arms 22.
- the height of the two parts can vary depending on the waste to be collected and the environment.
- the free ends of the four upstream and downstream arms include a stabilizer 54 which contributes to maintaining the device in position.
- Each arm 22 or 24 includes a strut 32 or 34 pivotally mounted on the arm and removably connected to the central platform.
- Each strut 32 or 34 is connected to the platform on an adjustment support 42 or 44 according to several corresponding positions, each at a different angle formed by each arm with respect to the direction perpendicular to the axis of the main flow 17.
- the two upstream arms 22 each comprise a convergent arm 52, one end of which is pivotally mounted on the central platform on one edge of the central channel 13 and the other end is slidably mounted on the arm 22.
- the two converging arms contribute to the floating waste trapped between the two upstream arms 22 converging towards the central channel 13 and preventing their stagnation at the location of the pivot links 62.
- the device 10 comprises a storage receptacle 45 located at the outlet of the central corridor 13 making it possible to retain the floating waste collected by the device.
- the storage receptacle 45 is located downstream of the device, between the two downstream arms 24 and consists of at least one retention net.
- a first anchoring device arranged on the footbridge 11 consists of at least two tubular piles 16 fixed to the bottom of the watercourse or the body of water. On each pile 16, a linear guide 21 fixed to the walkway can slide vertically. This first anchoring device holds the position of the device in relation to the bank but allows the device to follow the variations in height of the watercourse or the body of water.
- Another anchoring device comprises a set of chains attached to the corners of the central platform and consists of connecting each pivot link 62 to a chain fixed to the ground. Finally, another anchoring device consists in connecting each stabilizer 54 to a chain fixed to the ground.
- the device according to the invention comprises a guardrail located at the periphery of the walkway 11 and of the central platform to secure the movements of the people who use the device.
- the device 10 comprises at least one cable 26 stretched between the two upstream arms 22.
- FIG. 2 illustrates a detailed and three-dimensional view of the cables.
- the cable 26 is fixed to the two stabilizers 54 located at the end of the upstream arms 22.
- the cable 26 is aerial and therefore emerged and located above the surface of the water substantially parallel to it.
- the device 10 comprises a second cable 28 stretched between the two upstream arms 22, located below the surface of the water and therefore submerged and parallel to the first cable 26. At least one end of the cables 26 and 28 is fixed to the stabilizer by means of a shock absorber 36.
- the function of the cable 26 is to prevent bulky waste, such as tree trunks, from being collected by the device. Indeed, when a voluminous waste carried by the current reaches the height of the cable, this one prevents it from entering the space delimited by the two arms while it lets pass the small voluminous or deformable waste such as bags plastics.
- the voluminous waste blocked by the cable ends up being evacuated to the side thanks to the currents and the flow by sliding along the cable to the outside of the device 10.
- the second cable 28 has the same function as the first cable 26 and enhances the effect of it. By preventing the introduction of bulky waste into the device, the cables protect the device.
- the cables 26 and 28 represent the first means of protection of the storage receptacle and are located upstream of the device. As will be seen in the following description, the device also comprises a second means for protecting the storage receptacle located downstream of the device. The cables 26 and 28 also reinforce the solidity and resistance of the device according to the invention.
- FIG 3 illustrates an upstream adjustment support 42 on which an upstream arm 32 is connected.
- All adjustment supports are fixed to the platform on the outer edges of the side floats 14, as can be seen in figure 1.
- the upstream adjustment support 42 comprises 4 notches 43 characterized by holes in the figure but could also be characterized by slots or any other equivalent means.
- the end of the arm 32 comprises a hollow guide member and the pin 33 is slidably mounted in one of the notches 43 and in the guide member of the arm so as to secure the arm to the adjustment support. Thanks to the adjustment support of each arm, it is possible to adjust the angle that each arm forms with respect to the direction perpendicular to the axis of the central channel.
- Each notch 43 corresponds to a position of the arm and to a different angle thereof with respect to the direction perpendicular to the axis of the central channel.
- the embodiment described allows adjustment of the indexed angle from 10 degrees to 10 degrees for example, the first notch in which the arm is connected corresponding to an angle of 20 degrees, the next notch to an angle of 30 degrees and so immediately to the last notch corresponding in our example to an angle of 50 degrees.
- the number of notches is not limiting. Any other type of attachment that can connect the end of the arm to its adjustment support can be used as long as it allows adjustment of the angle of the arm. For example, a means of attaching the end of the arm which would allow continuous adjustment of the angle of the arm could be used without departing from the scope of the invention.
- each downstream arm can be adjusted independently of one another.
- the angle formed by each upstream arm 22 with respect to a direction perpendicular to the axis of the main flow is denoted angle a (alpha) in the figure and preferably varies between 20 and 90 degrees.
- the angle formed by each downstream arm 24 with respect to a direction perpendicular to the axis of the main flow is denoted angle (beta) in the figure and preferably varies between 20 and 60 degrees.
- Different variation ranges of the angles a and B could be used without departing from the scope of the invention.
- the angle that the cables 26 and 28 make with the direction perpendicular to the axis of the flow is preferably greater than 25 degrees to guarantee the rapid deflection and evacuation of the waste retained on the cables. To obtain this adjustment, it will be necessary to adjust the angle a of the upstream arm located on the side of the bank 15 so that it is different and greater than the angle a of the upstream arm located on the side opposite the shore.
- the angle that the cables 26 and 28 make with the direction perpendicular to the axis of the flow is denoted angle y (gamma) in the figure, it is this angle which must preferably be greater than 25 degrees.
- adjusting the angle of the upstream and downstream arms makes it possible to adapt the impact of the device on the flow and also its resistance to flow.
- the arrangement of the arms illustrated in figure 4 is an example of adjustment.
- the device according to the invention allows a large number of adjustments to the angular position of the arms depending on the configuration of the location where it is to be installed. This adjustment means contributes to protecting the device and in particular the storage receptacle.
- the cables 26 and 28 have at one of their ends a winding device so as to be able to adjust and adapt their length according to the angle of adjustment of the arms upstream 22.
- One of the ends of cables 26 and 28 also has a means for adjusting the tension of each cable.
- the upstream arms will be adjusted to their maximum angle so that the angle which separates them is minimum while respecting the constraint on the angle y so that the cables 26 and 28 are not perpendicular to the axis of the main flow 17; in this position, the length of the cables 26 and 28 will be minimum to minimize the possibility of bulky waste entering the central corridor 13 and allowing its rapid evacuation outside the device.
- the upstream arms are adjusted to their maximum angle so that the angle which separates them is minimum, the force of the main flow exerted on them is minimum, which reduces the impact of the device on flow and protects it.
- the upstream arms have an adjustable length so as to be able to adjust and adapt their length according to the desired adjustment position while guaranteeing the constraint on the angle y.
- the upstream arms are telescopic.
- the minimum length of each arm can be increased up to a third of its length.
- the two downstream arms 24 protect the storage receptacle from the forces it undergoes due to the main flow, the various currents and the voluminous waste which can reach it from the outside.
- the device according to the invention is located in a main flow and constitutes an obstacle which modifies the current of the main flow.
- Upstream of the device the speed of the current is slowed down while reverse currents are formed downstream.
- the creation of the reverse currents is symbolized by the arrows 27 in FIG. 4.
- the presence and the intensity of the reverse currents are proportional to the slowing down of the current upstream.
- the storage receptacle 45 located downstream of the device between the downstream arms, is protected from these reverse currents.
- the speed of the reverse currents created by the presence of the device is attenuated by the presence of the arms 24.
- the voluminous waste which is separated by the cables can be carried away and folded down on the device by these reverse currents. This waste is in this case deflected and pushed back by the downstream arms 24 and does not reach the storage receptacle.
- the storage receptacle is thus protected in the event of a storm where the flow of water increases and the speed of the currents too.
- adjusting the angles of the upstream and downstream arms can reduce the intensity of reverse currents that form downstream of the device.
- the effect of slowing down the current upstream is attenuated by reducing the resistance to flow, which also attenuates the volume reverse currents downstream.
- the upstream slowing effect is attenuated because a privileged direction is created for the flow in the direction of the most open upstream arm, therefore corresponding to the smallest angle, therefore to the right in figure 4 .
- the storage receptacle comprises means to facilitate their extraction and their emptying.
- each retention net comprises an inlet kept open and fixed to a rigid support frame sliding on vertical rails located at the outlet of the central channel 13, therefore downstream of the device.
- the entrance to the retention net comprises an emerged part and a submerged part so as to encompass the outlet of the central channel 13.
- the support frame comprises at least one handle to facilitate its extraction and emptying.
- the device according to the invention due to its adjustable characteristics, makes it possible to adapt to any installation configuration and to the environment.
- the device can also be modified once installed to be able to compensate for a period of storms.
- thanks to its adjustable means of protection located upstream and downstream of the device it provides great installation flexibility.
- the stabilizers 54 can serve as a support for colored and/or luminous beacons to identify the device in all circumstances.
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Mechanical Engineering (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Other Liquid Machine Or Engine Such As Wave Power Use (AREA)
- Apparatus Associated With Microorganisms And Enzymes (AREA)
- Removal Of Floating Material (AREA)
- Catching Or Destruction (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR2100364A FR3118777B1 (fr) | 2021-01-14 | 2021-01-14 | Dispositif de collecte de déchets flottants pour la dépollution des cours d’eau |
| PCT/EP2022/050734 WO2022152838A1 (fr) | 2021-01-14 | 2022-01-14 | Dispositif de collecte de déchets flottants pour la dépollution des cours d'eau |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| EP4278045A1 true EP4278045A1 (fr) | 2023-11-22 |
| EP4278045C0 EP4278045C0 (fr) | 2025-03-12 |
| EP4278045B1 EP4278045B1 (fr) | 2025-03-12 |
Family
ID=74759118
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP22701346.3A Active EP4278045B1 (fr) | 2021-01-14 | 2022-01-14 | Dispositif de collecte de déchets flottants pour la dépollution des cours d'eau |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP4278045B1 (fr) |
| FR (1) | FR3118777B1 (fr) |
| WO (1) | WO2022152838A1 (fr) |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4165282A (en) * | 1976-02-26 | 1979-08-21 | Bennett Pollution Controls Ltd. | Oil recovery method and apparatus |
| FR2430350B1 (fr) * | 1978-07-04 | 1981-10-23 | Ouest Ets Generaux Meca | |
| IT8347830A0 (it) * | 1983-03-01 | 1983-03-01 | Ayroldi Giuseppe | Apparecchiatura per il ricupero di sostanze oleoso o simili galleggianti su fiumi o su altri corsi d'acqua |
| FR2684065B1 (fr) * | 1991-11-26 | 1995-03-10 | Morillon Corvol Courbot | Bateau recuperateur d'objets flottants. |
| FR2730509B1 (fr) | 1995-02-09 | 1997-03-14 | Morillon Corvol Courbot | Barrage flottant |
| US10683627B2 (en) * | 2014-10-16 | 2020-06-16 | Ocean Cleaner, LLC | Systems, apparatus and methods for collecting and separating floating debris and water from a body of water |
| BE1026721B1 (nl) | 2018-10-23 | 2020-05-26 | Dec N V Deme Env Contractors | Werkwijze en systeem voor het verwijderen van drijvende ongewenste objecten uit een watermassa in een gebied |
-
2021
- 2021-01-14 FR FR2100364A patent/FR3118777B1/fr active Active
-
2022
- 2022-01-14 EP EP22701346.3A patent/EP4278045B1/fr active Active
- 2022-01-14 WO PCT/EP2022/050734 patent/WO2022152838A1/fr not_active Ceased
Also Published As
| Publication number | Publication date |
|---|---|
| EP4278045C0 (fr) | 2025-03-12 |
| FR3118777A1 (fr) | 2022-07-15 |
| WO2022152838A1 (fr) | 2022-07-21 |
| FR3118777B1 (fr) | 2023-11-17 |
| EP4278045B1 (fr) | 2025-03-12 |
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