CN216765806U - Device that algal bloom was collected fast - Google Patents
Device that algal bloom was collected fast Download PDFInfo
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- CN216765806U CN216765806U CN202123274399.7U CN202123274399U CN216765806U CN 216765806 U CN216765806 U CN 216765806U CN 202123274399 U CN202123274399 U CN 202123274399U CN 216765806 U CN216765806 U CN 216765806U
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Abstract
The utility model discloses a device for quickly collecting algal blooms, which comprises a carrying ship, an algal collecting system and an algal-water separation system, wherein the algal collecting system comprises an algal suction port, an algal blocking rope, a traction ship fixing device and an algal blocking rope winding device, one end of the algal blocking rope is connected with the traction ship, and the other end of the algal blocking rope is connected with the algal blocking rope winding device. Adjusting the algae sucking port to enable the upper edge of the algae sucking port to be submerged through the water surface; the carrier ship moves to the algal bloom outbreak water area; the traction boat pulls the algae blocking rope to collect algae bloom in a circle, then the traction boat fixing device fixes the traction boat, the algae blocking rope winding device winds the algae blocking rope, and the algae bloom is quickly collected to the algae sucking port; the high-pressure pump conveys the algal blooms from the algal inlet to the algal-water separation system, and the algal-water separation system separates the algal blooms from water. The device has a simple structure, is small, exquisite and flexible, and is suitable for quickly collecting algal blooms in water bodies under various environments and quickly and efficiently separating algal water.
Description
Technical Field
The utility model relates to the technical field of environmental protection, in particular to treatment of blue-green algae.
Background
With the rapid development of industrial and agricultural in the watershed and the increase of human activity intensity, a large amount of nitrogen and phosphorus nutrient salt is input into the water areas of rivers and lakes, so that the eutrophication state of some lakes is excessive and gradually worsened, algae outbreak is finally caused, and algal toxins generated during the apoptotic decomposition of algae cause potential harm to aquatic organisms and human health. In recent years, algal bloom outbreaks occur in large lakes such as Yunnan lake, Wuxi Taihu lake and Hefei nest lake, the lakes are often used as drinking water sources in the areas, and the outbreaks of algal blooms cause great damage to the drinking water sources and seriously affect the lives of residents. The algae are gathered on the water surface to form viscous floccules after a large amount of algae die, the cleaning difficulty is large, the existing algae collecting ships or collecting devices are various in forms, including algae collecting ships adopting a suction pump mode, algae collecting ships adopting a filter cloth conveyor belt mode, small-sized algae collecting ships on shore in a remote control mode, fixed algae sucking port devices on the water surface and the like, but the algae collecting ships and the collecting devices have the defects of complex operation, high energy consumption, limited narrow water area, small operation range, low collecting efficiency and the like.
The existing multifunctional algal bloom collecting ship mainly collects algal blooms by two modes of arranging a conveyor belt with filter cloth in an algal collecting cabin and installing a suction pump, but the problems of simple and intelligent operation, energy consumption reduction, operation water area range expansion, collection efficiency improvement and the like need to be solved. According to the description in the shipborne micro-filtration algae removal system and the algae removal method with the patent number of CN103754983A published by Li Shengjun et al, the device is arranged on a multifunctional algae removal ship, can collect and separate algae blooms on water surface and water, and has a large operation range; zhengzheng et al published patent No. CN107761685A, describes a rapid removal device and method for algal blooms in water, the device connects and fixes a rotating shaft and an algae collecting boat through a hauling rope, under the action of the hauling force of the hauling rope and the driving force of the algae collecting boat, the algae collecting boat makes circular motion on the water surface, and rapid collection of the algal blooms is realized; the immersion type algae-laden water separating device is described in patent No. CN202688064U of Humingming et al, and the device is composed of an algae sucking device fixed on water and an algae-laden water separating device arranged on a shore, and can realize the collection of algae blooms and the separation of algae-laden water.
The patent of the ship-borne micro-filtration algae removal system and the algae removal method describes that the device mainly comprises an algae suction port device and a micro-filtration device, is arranged on a multifunctional algae removal ship, and needs to manually operate the algae removal ship to operate an algal bloom outbreak water area on the ship; the patent of a rapid removal device and a rapid removal method for algal blooms in a water body describes that the algae removal ship circularly moves on the water surface around a fixed rotating shaft through a traction rope to realize the collection of the algal blooms, the operation is simple, but the algal blooms in the water body often exist in irregular areas, and the device has more ineffective energy consumption in the process of collecting the algae, can not achieve the purpose of saving energy consumption; the patent of the immersion type algae-water separation device describes that the device realizes the collection of water body formation and algae-water separation through a water fixed algae-sucking port system and an onshore algae-water separation system, the device has high automation degree, simple operation and high algae-water separation efficiency, but the fixed algae-sucking port has small algae-collecting range and low algae-collecting efficiency, more electromechanical devices are used in the device, and reagents need to be added in the algae-water separation process, so the device has the defects of high energy consumption and high treatment cost.
SUMMERY OF THE UTILITY MODEL
The technical problems solved by the utility model are as follows: in the prior art, the algae removing equipment has low algae removing efficiency, limited algae removing range and high operation cost.
In order to solve the technical problems, the utility model provides the following technical scheme: the utility model provides a device that algae bloom was collected fast, including carrying the thing ship, the receipts algae system of being connected with carrying the thing ship, set up on carrying the thing ship and with the algae water separation system who receives algae system connection, receive the algae system including the algae mouth of inhaling that is located the thing ship outside and block the algae rope, receive the algae system still including the tow boat, tow boat fixing device, block algae rope coiling mechanism, the one end that blocks the algae rope is connected with the tow boat, the other end that blocks the algae rope is connected with blocking algae rope coiling mechanism, tow boat fixing device can fix, the separation tow boat, make and block the algae rope and surround and inhale the algae mouth.
The carrier ship moves to the algae bloom outbreak water area, the position and the height of the algae sucking port are adjusted, the upper edge of the algae sucking port slightly sinks over the water surface, and the carrier ship stops. And starting the traction boat, wherein the traction boat pulls the algae blocking rope to collect algae bloom, and the high-pressure pump communicated with the algae sucking port is started. After the traction ship finishes collecting the algal blooms, the traction ship advances to a traction ship fixing device, the traction ship fixing device fixes the traction ship, then the algae blocking rope winding device is started, the algae blocking rope winding device is used for accommodating the algae blocking ropes, and the algal blooms are collected to the algae sucking port rapidly under the collection effect of the algae blocking ropes. The high-pressure pump conveys the algal blooms from the algal suction port to the algal-water separation system, and the algal-water separation system separates the algal blooms from water.
The device provided by the utility model is simple in structure, small, exquisite, flexible and convenient, especially for a towing boat, the algae blocking rope and the algae sucking port are matched to realize rapid gathering and collection of the algae blooms on the water surface, the algae blooms in a narrow and shallow water area can be collected, the algae removal range is not limited, and the device is suitable for rapid collection and rapid and efficient algae-laden water separation of water under various environments.
As an improvement, the algae blocking rope is a hollow airtight inflatable belt, an inflation inlet at one end of the algae blocking rope is connected with a high-pressure inflation pump, and the high-pressure inflation pump is arranged on the towing ship.
A method for using a device for quickly collecting algal blooms comprises the following steps:
firstly, adjusting the height of the algae sucking port to enable the upper edge of the algae sucking port to be submerged through the water surface;
secondly, the carrier ship moves to an algal bloom outbreak water area, the direction of an algae sucking port is adjusted, and the carrier ship is stopped;
thirdly, starting the traction ship, drawing the algae blocking rope to collect the algae bloom, starting a high-pressure pump communicated with the algae sucking port, simultaneously starting a high-pressure air pump to inflate the algae blocking rope to enable the algae blocking rope to expand, after the traction ship finishes collecting the algae bloom, moving the traction ship to a traction ship fixing device, fixing the traction ship by the traction ship fixing device, then starting an algae blocking rope winding device, collecting the algae blocking rope by the algae blocking rope winding device, removing air in the algae blocking rope, and quickly collecting the algae bloom to the algae sucking port under the blocking effect of the algae blocking rope;
fourthly, the high-pressure pump conveys the algal blooms from the algal suction port to the algal-water separation system, and the algal-water separation system separates the algal blooms from water.
Drawings
The utility model is further described below with reference to the accompanying drawings:
FIG. 1 is a schematic top view of an apparatus for rapid collection of algal blooms;
FIG. 2 is a schematic view of a carrier support;
FIG. 3 is a schematic view of the internal structure of a device for rapidly collecting algal blooms;
FIG. 4 is a side view of FIG. 1;
fig. 5 is a left side view of fig. 1.
The symbols in the figures illustrate:
1. a float bowl; 2. a support; 3. a propeller; 4. a water-stop sheet; 5. a connecting rod; 6. an algae sucking port; 7. snaring; 8. a slot plate; 9. buckling; 10. an electric rotating shaft; 11. an exhaust roller; 12. towing the ship; 13. a common storage battery; 14. a wireless receiver; 15. a high pressure inflator; 16. a constant pressure mechanical valve; 17. stopping the algae; 18. a tow boat securing means; 19. a camera; 20. a high pressure pump; 21. a high-pressure tank; 22. a filter bag; 23. a solar panel; 24. a solar storage battery; 25. automatically controlled cabinet of wireless reception.
Detailed Description
As shown in fig. 3, a device for rapidly collecting algal blooms comprises a carrier, an algae collecting system connected with the carrier, and an algae-water separating system arranged on the carrier and connected with the algae collecting system, wherein the algae collecting system comprises an algae sucking port 6 positioned on the outer side of the carrier and an algae blocking rope 17, the algae collecting system further comprises a traction ship 12, a traction ship fixing device 18 and an algae blocking rope winding device, one end of the algae blocking rope is connected with the traction ship, the other end of the algae blocking rope is connected with the algae blocking rope winding device, and the traction ship fixing device can fix and separate the traction ship to enable the algae blocking rope to surround the algae sucking port.
In actual operation, the upper edge of the algae sucking port 6 is slightly over the water surface. The traction boat 12 pulls the algae blocking rope 17 to collect algae bloom, and the high-pressure pump 20 communicated with the algae sucking port is started. After the traction boat finishes collecting the algal blooms, the traction boat advances to the traction boat fixing device 18, the traction boat is fixed by the traction boat fixing device, then the algae blocking rope winding device is started to store the algae blocking ropes, and the algal blooms are collected to the algae sucking port 6 rapidly under the collecting effect of the algae blocking ropes. The high-pressure pump conveys the algal blooms from the algal suction port to the algal-water separation system, and the algal-water separation system separates the algal blooms from water.
As an improvement, the algae blocking rope 17 is a hollow closed inflatable belt made of high polymer materials, a metal weight distribution chain is arranged in the belt, an inflation inlet at one end of the algae blocking rope is connected with a high-pressure inflation pump 15, and the high-pressure inflation pump is arranged on the towing ship 12. When the traction boat pulls the algae blocking rope to carry out circle collection on algae blooms, the high-pressure inflator pump is started to inflate the algae blocking rope simultaneously to enable the algae blocking rope to expand, the expanded algae blocking rope can be partially exposed above the water surface on the water surface, and is partially immersed below the water surface, so that the algae blooms on the water surface layer can be fully intercepted and collected, and the intercepting efficiency of the algae blocking rope on the algae blooms is improved. After the traction ship 12 finishes collecting the algal blooms in a circle, the traction ship fixing device 18 fixes the traction ship, then the algae blocking rope winding device is started, the algae blocking rope winding device collects the algae blocking ropes in a winding mode, air in the algae blocking ropes is discharged, and the algal blooms are quickly collected towards the algae suction port under the collecting effect of the algae blocking ropes.
As an improvement, a constant-pressure mechanical valve 16 is arranged at an inflation port at one end of the algae blocking rope 17, so that after the inside of the algae blocking rope reaches a certain air pressure, the air flow of the high-pressure inflator pump can not enter the algae blocking rope any more.
The body of the algae suction port 6 is connected with the carrier boat through a connecting rod 5, and a traction boat fixing device 18 and an algae blocking rope winding device are respectively arranged on two sides of the connecting rod. So design, at the in-process that blocks algae rope 17 was accomodate to blocking algae rope coiling mechanism, the binding off of blocking algae rope is more and more littleer to collect the interior algae bloom of receipts mouth to inhaling the algae mouth.
Alternatively, the tow boat fixture 18 comprises an electrically controlled magnet and the tow boat 12 is stainless steel. The electric control magnetic paste can adsorb or release the towing ship. The periphery of the electric control magnetic paste is provided with a waterproof cover.
As an option, the algae blocking rope winding device comprises an electric rotating shaft 10 and an exhaust rolling shaft 11 arranged beside the electric rotating shaft, and the exhaust rolling shaft and the electric rotating shaft are arranged in parallel. In the process of algae collecting operation, the traction ship 12 pulls the algae blocking rope 17, and simultaneously the high-pressure air pump 15 inflates the algae blocking rope. When the traction boat and the algae blocking rope finish the circle collection of algae blooms in a specific water area, the traction boat is attached to the electric control magnetic sticker 18, the electric rotating shaft 10 of the algae blocking rope is started, the algae blocking rope is wound on the electric rotating shaft, the algae blocking rope 17 is shortened, meanwhile, the electric rotating shaft is matched with the exhaust rolling shaft 11, so that gas in the algae blocking rope is discharged, the algae blocking rope is convenient to accommodate, the occupied space of the rolled algae blocking rope is reduced, and finally the algae blooms are collected at the algae absorption port 6, so that the efficient and rapid collection of the algae blooms is finished.
The algae sucking port 6 is a top opening of a round barrel, and the round barrel is a body of the algae sucking port. The both sides of cask welding porose frid 8, the hole site on the porose frid distributes from top to bottom, and the snare is seted up the locating hole, and the cask is located snare 7, and the hole site on the porose frid is connected through buckle 9 with the locating hole. The barrel is made of a stainless steel plate with the thickness of 2mm, the upper part of the barrel is provided with an opening, the bottom of the barrel is sealed, and the barrel is wide at the upper part and narrow at the lower part. The lower part of the barrel is provided with a high-pressure pump connector. The buckle 9 adjusts the up-down position of the algae absorbing opening by adjusting the up-down corresponding positions of the hole position of the hole groove plate and the sleeved positioning hole so as to achieve the best algae absorbing effect. The snare 7 is connected with one end of the connecting rod 5, and the other end of the connecting rod is connected with the carrier boat.
The tow vessel 12 is preferably stainless steel and houses conventional batteries 13 and engines. And a waterproof cover is arranged outside the common storage battery and used for supplying power to the engine of the traction ship and the high-pressure inflator pump 15.
Receive the algae system still including setting up the camera 19 on connecting rod 5, the camera can 180 rotations, and the periphery is equipped with transparent resin material buckler, can present the surface of water on terminal display screen with the algae bloom condition on a large scale.
The algae-laden water separation system comprises a high-pressure tank 21 and a filter bag 22 arranged in the high-pressure tank, an algae suction port 6 is connected with a water inlet of a high-pressure pump 20 through a pipeline, and a water outlet of the high-pressure pump is connected with a water inlet of the high-pressure tank. Wherein, the shell of the high-pressure pump is preferably made of stainless steel, and the water inlet of the high-pressure pump is particularly connected with the lower part of the barrel where the algae sucking port is positioned.
The preferred stainless steel material of preferred of pressure-vessel 21, the top is equipped with the apron, and when the apron was closed, it was sealed to realize the pressure-vessel top, and the water inlet is located pressure-vessel upper portion, and the delivery port is located the pressure-vessel lower part.
As an option, the filter bag 22 is made of a high polymer hydrophilic material, the aperture is 5-10 microns, the filter bag has the characteristics of high strength, difficulty in blocking the aperture and high stability of filtered water, and the filter bag 22 can realize rapid separation of algae and water under the condition that high water pressure is generated under the combined action of the high-pressure pump 20 and the high-pressure tank 21. Compared with the traditional algae-laden water separation process such as coagulating sedimentation, gravity flow filtration and the like, the separation efficiency and the cost are obviously improved.
With reference to fig. 1 and 3, the device for rapidly collecting algal blooms further comprises a solar power supply system arranged on the carrier, wherein the solar power supply system comprises a solar panel 23 and a solar storage battery 24. The solar panel converts solar energy into electric energy to be stored in the solar storage battery 24, the solar storage battery provides stable electric energy for each electric device in the device for rapidly collecting the algal blooms, and a waterproof cover is arranged on the periphery of the solar storage battery 24. Wherein, solar panel 23 is built on stilts on the carrier through steel support, and solar battery 24 is fixed in on the carrier.
As shown in fig. 3, the device for rapidly collecting algal blooms further comprises a wireless electric control system, wherein the wireless electric control system comprises a wireless receiving electric control cabinet 25 arranged on the carrier boat, a wireless receiver 14 arranged on the towing boat 12, and a wireless visual remote controller capable of being held by hands. And transmitting an operation instruction to the wireless receiving electric control cabinet through wireless visual remote control to remotely control the operation of each device of the device for rapidly collecting the algal blooms, thereby realizing the algae removal operation. For example, a wireless receiver 14 is arranged in the towboat 12, the wireless receiver is connected with an engine of the towboat and a high-pressure inflator pump 15, and the wireless receiver receives an instruction of a wireless visual remote controller to realize the control of the towboat 12. For another example, the wireless visual remote controller controls the electric control magnetic paste to realize the attachment and the separation with the traction ship through the wireless receiving electric control cabinet 25. For another example, the camera 19 can present the high-definition video image of the algal bloom situation in a large range on the water surface on the display screen of the wireless visual remote controller, so that the algal bloom situation in a range invisible to the naked eye can be observed. The device for rapidly collecting the algal blooms is visually and intelligently controlled through a wireless visual remote controller, so that the large-range water area algae removal operation is realized.
With reference to fig. 2 and 3, the carrier includes a semi-elliptical buoy 1, a support 2, a propeller 3, and a water-stop sheet 4. The bracket is made of stainless steel square steel and is fixed on the buoy through screws. The screw is located stainless steel support below, and electrical system controls the forward, rotatory and the back-up of carrying the thing ship through opening the stop and the impeller positive and negative rotation of controlling two screws respectively, and the screw chooses the stainless steel impeller for use for the motor that is used for driving the screw is high-speed spiral waterproof motor. The water-stop sheet is a stainless steel plate with the thickness of 2mm, and is arranged in the stainless steel bracket clamping groove, so that the water-stop sheet has the functions of bearing and stopping water for the high-pressure pump 20, the high-pressure tank 21, the solar storage battery 23 and the wireless receiving electric control cabinet 25.
A method for using the device for rapidly collecting the algal blooms comprises the following steps:
firstly, placing the device for rapidly collecting the algal blooms on the water surface, adjusting the depth of an algae sucking port 6 by adjusting the corresponding position of an adjusting buckle 9, enabling the upper edge of the algae sucking port to slightly exceed the water surface, and starting a power supply switch of a solar storage battery 24, a starting switch of a traction ship 12 and a wireless visual remote controller switch;
secondly, controlling the carrier boat to move to an algal bloom outbreak water area by operating a wireless visual remote controller on the shore, adjusting the direction of the algal bloom absorbing port 6 according to the algal bloom condition shot by the camera 19, and then stopping the carrier boat propeller 3;
thirdly, controlling the towing boat 12 to tow the algae blocking rope 17 to collect algae bloom by operating the wireless visual remote controller, starting the high-pressure pump 20, simultaneously starting the high-pressure inflator pump 15 to inflate the algae blocking rope 17 to expand the algae blocking rope, after the towing boat finishes collecting algae bloom, moving the boat to the connecting rod 5 to be attached to the electric control magnetic paste, then starting the electric rotating shaft 10 of the algae blocking rope through the wireless visual remote controller to store the algae blocking rope 17, simultaneously, exhausting air in the algae blocking rope under the extrusion action of the exhaust rolling shaft 11, and rapidly collecting the algae bloom to the algae sucking port 6 under the blocking action of the algae blocking rope, so that rapid collection of the algae bloom can be realized in the process, and the algae bloom in a narrow and shallow water area can also be collected;
fourthly, after the high-pressure inflator pump 15 is started, a large amount of algae water enters the high-pressure tank 21, the filter bag 22 can realize the rapid and efficient separation of the algae water under the action of high water pressure, the algae is trapped in the filter bag, and the water is discharged out of the high-pressure tank through the filter bag;
fifthly, after the collection of the algal blooms in the specific water area is finished, the carrier ship moves to other algal bloom outbreak water areas, and the third step and the fourth step are repeated;
sixthly, after the algae removal operation is completed, the carrying boat moves to the shore to clean the algae trapped in the filter bag 22.
The above description is only a preferred embodiment of the present invention, and for those skilled in the art, the present invention should not be limited by the description herein, since various changes and modifications can be made in the details of the embodiment and the application range according to the spirit of the present invention.
Claims (9)
1. The utility model provides a device that algae bloom was collected fast, including carrying the thing ship, with carry the receipts algae system that the thing ship is connected, set up on carrying the thing ship and with the algae water separation system who receives the algae system and be connected, receive the algae system including be located the thing ship outside inhale algae mouth (6) and block algae rope (17), its characterized in that: the algae collecting system also comprises a traction ship (12), a traction ship fixing device (18) and an algae blocking rope winding device, wherein one end of the algae blocking rope is connected with the traction ship, the other end of the algae blocking rope is connected with the algae blocking rope winding device, and the traction ship fixing device can fix and separate the traction ship to enable the algae blocking rope to surround the algae sucking port.
2. The apparatus for rapid collection of algal blooms according to claim 1, wherein: the algae blocking rope (17) is a hollow airtight inflatable belt, an inflation inlet at one end of the algae blocking rope is connected with a high-pressure inflation pump (15), and the high-pressure inflation pump is arranged on the towing ship (12).
3. The apparatus for rapid collection of algal blooms according to claim 1, wherein: the body where the algae sucking port (6) is located is connected with the carrier boat through a connecting rod (5), and a traction boat fixing device (18) and an algae blocking rope winding device are respectively arranged on two sides of the connecting rod.
4. A device for rapid collection of algal blooms according to claim 3, wherein: the towing boat fixing device (18) comprises an electric control magnetic paste, and the towing boat (12) is made of stainless steel.
5. A device for rapid collection of algal blooms according to claim 3, wherein: the algae blocking rope winding device comprises an electric rotating shaft (10) and an exhaust rolling shaft (11) arranged beside the electric rotating shaft.
6. A device for rapid collection of algal blooms according to claim 3, wherein: the algae absorbing port (6) is the top opening of a round barrel, the two sides of the round barrel are welded with perforated groove plates (8), hole sites on the perforated groove plates are distributed up and down, the ring sleeve is provided with positioning holes, the round barrel is positioned in the ring sleeve, and the hole sites on the perforated groove plates are connected with the positioning holes through buckles (9).
7. The apparatus for rapid collection of algal blooms according to claim 1, wherein: the algae-laden water separation system comprises a high-pressure tank (21) and a filter bag arranged in the high-pressure tank, an algae suction port (6) is connected with a water inlet of a high-pressure pump (20) through a pipeline, and a water outlet of the high-pressure pump is connected with the water inlet of the high-pressure tank.
8. The apparatus for rapid collection of algal blooms according to claim 1, wherein: the solar power supply system is arranged on the carrier and comprises a solar panel (23) and a solar storage battery (24).
9. An apparatus for rapid collection of algal blooms according to claim 4, wherein: the wireless electric control system comprises a wireless receiving electric control cabinet (25) arranged on the carrier and a handheld wireless visual remote controller.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202123274399.7U CN216765806U (en) | 2021-12-24 | 2021-12-24 | Device that algal bloom was collected fast |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202123274399.7U CN216765806U (en) | 2021-12-24 | 2021-12-24 | Device that algal bloom was collected fast |
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| CN216765806U true CN216765806U (en) | 2022-06-17 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114045806A (en) * | 2021-12-24 | 2022-02-15 | 普利资环境科技（苏州）有限公司 | Device that algal bloom was collected fast |
| CN117626917A (en) * | 2023-11-20 | 2024-03-01 | 武汉中科水生生态环境股份有限公司 | Device and method for collecting and cleaning filamentous algae |
-
2021
- 2021-12-24 CN CN202123274399.7U patent/CN216765806U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114045806A (en) * | 2021-12-24 | 2022-02-15 | 普利资环境科技（苏州）有限公司 | Device that algal bloom was collected fast |
| CN117626917A (en) * | 2023-11-20 | 2024-03-01 | 武汉中科水生生态环境股份有限公司 | Device and method for collecting and cleaning filamentous algae |
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