Floating type seawater uranium extraction module suitable for sea test and implementation method

Abstract

The invention discloses a floating type seawater uranium extraction module suitable for a sea test and an implementation method. The floating type seawater uranium extraction module comprises a seawater uranium extraction device, a balance floating ball, a balance weight block, a connecting main rope, a safety auxiliary rope and a fixing object. The device for extracting uranium from seawater comprises an amidoxime-based membrane, a flow guide layer, a non-woven fabric, a shell and water-permeable seal heads at two ends, the balance floating ball and the balance weight block are connected to the upper surface and the lower surface of the seawater uranium extraction device correspondingly and used for cooperatively adjusting buoyancy and posture stability of the seawater uranium extraction device in seawater. And one ends of the connecting main rope and the safety auxiliary rope are connected with the seawater uranium extraction device, and the other ends are connected with a fixture, so that the seawater uranium extraction device keeps stress balance in seawater and can adaptively adjust the overflowing direction. According to the floating type seawater uranium extraction module convenient to assemble and capable of adapting to various sea conditions, the fixing problem of a seawater uranium extraction device in a sea test is effectively solved, the water exchange capacity of a material is improved, the uranium extraction efficiency is improved, and meanwhile the attachment influence of marine fouling organisms is effectively reduced.

Description

Technical Field

[0001] This invention relates to the field of seawater uranium extraction technology, and more specifically to a floating seawater uranium extraction module and its implementation method suitable for sea trials. Background Technology

[0002] Oceans contain nearly 4.5 billion tons of uranium, more than 1,000 times the reserves of terrestrial uranium resources, and hold promise as a strategic uranium resource for sustainable human use. Despite the extremely rich reserves of marine uranium resources, the highly complex marine environment has become the core challenge for the current development of seawater uranium extraction technology.

[0003] First, seawater, as a complex natural matrix, not only has high salinity but also extremely low uranium concentration (approximately 3.3 μg·L⁻¹). -1 It also contains various nutrients such as silicates (DSi), dissolved inorganic phosphorus (DIP), and dissolved inorganic nitrogen (DIN); among which, Cl - Na + Mg 2+ Ca 2+ ,Br - Impurities such as impurities have been proven to significantly affect the adsorption performance of uranium extraction materials, thus limiting the improvement of uranium extraction efficiency. Secondly, the marine environment is characterized by severe corrosiveness and widespread biofouling: seawater uranium extraction requires a lengthy adsorption process lasting tens of days or even months. During this period, the attachment of fouling organisms is unavoidable, leading to marine biofouling. The types and densities of these fouling organisms are closely related to environmental parameters such as sea location, water depth, and water quality, as well as hydrological conditions such as seawater temperature, salinity, currents, tides, and waves. Furthermore, they are also associated with the matrix composition of the uranium extraction materials, making biofouling control extremely difficult. In summary, the complexity and variability of the marine environment, especially the decline in water exchange and uranium adsorption performance caused by factors such as marine hydrological conditions, hydrodynamic characteristics, and fouling organism attachment, have become key obstacles to the practical application of seawater uranium extraction technology.

[0004] The engineering application of seawater uranium extraction technology urgently requires breakthroughs in two core bottlenecks: material performance and sea trial tooling technology. Currently, research on seawater uranium extraction materials has achieved considerable breadth and depth both domestically and internationally. However, the development of sea trial tooling technology lags behind, making it difficult to support the transition of seawater uranium extraction technology from laboratory research to marine engineering applications. Technological innovation is urgently needed to address these shortcomings and provide a stable uranium resource guarantee for the sustainable development of the national nuclear energy industry.

[0005] Currently, sea trials in real marine environments mostly employ fixed uranium extraction schemes, including onshore filtration, shore reef-based, dock / port-based, and offshore structure-based schemes. These schemes generally suffer from high energy consumption, significant human interference, insufficient water exchange capacity between materials and seawater, and severe biofouling, directly leading to low uranium extraction efficiency and making it difficult to meet the needs of engineering applications. Summary of the Invention

[0006] The purpose of this invention is to provide a floating seawater uranium extraction module and its implementation method suitable for sea trials, thereby solving the problems of low water exchange capacity, severe biological attachment, and low uranium extraction efficiency of traditional fixed seawater uranium extraction modules.

[0007] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0008] According to a first aspect of the present invention, a floating seawater uranium extraction module suitable for sea trials is provided, comprising a seawater uranium extraction device, a balancing buoy, a balancing counterweight, a connecting main rope, a safety auxiliary rope, and a fixing device; the seawater uranium extraction device includes a metallo-oxime-based membrane, a plastic mesh flow guide layer, a non-woven fabric, a shell, and water-permeable end caps for adsorbing uranium in seawater; the balancing buoy and the balancing counterweight are respectively connected to the upper and lower surfaces of the seawater uranium extraction device for synergistically adjusting the buoyancy and attitude stability of the seawater uranium extraction device in seawater; one end of the connecting main rope and the safety auxiliary rope is fixedly connected to the seawater uranium extraction device, and the other end is detachably connected to the fixing device, so that the seawater uranium extraction device maintains force balance in seawater and can adaptively adjust the flow direction.

[0009] Preferably, in the seawater uranium extraction device, the thickness of the plastic mesh flow guide layer is 1-5 mm and the porosity is ≥70%. The amine oxime-based membrane, the plastic mesh flow guide layer, and the non-woven fabric are alternately stacked and rolled to form a core. The core is encapsulated in the outer shell, and the water-permeable caps at both ends are fixed to the two ends of the outer shell by snap-fit ​​or adhesive.

[0010] Preferably, the weight of the counterweight is 3-5 times the buoyancy of the seawater uranium extraction device in water, and the buoyancy of the buoyant ball is 2-5 times the weight of the counterweight; the buoyant ball is made of seawater-resistant plastic, and the counterweight is an integral sinker or a detachable and combinable sinker; the number of the buoyant ball and the counterweight can be adjusted according to the sea trial depth and sea conditions.

[0011] The outer shell of the seawater uranium extraction device is provided with at least two reserved connection holes. The balance float and the balance counterweight are fixed to the reserved connection holes by cables. The main connecting rope and the safety auxiliary rope are fixed to the central area or end of the seawater uranium extraction device through the reserved connection holes, and the length of the safety auxiliary rope is greater than the length of the main connecting rope.

[0012] The fixed object is a fixed anchor on the seabed, an immovable sea trial platform floating on the sea surface, or a load-bearing rope fixed to a structure on both sides of the water body; the shape of the seawater uranium extraction device is cylindrical, cuboid, or cage-shaped, and its size can be adjusted according to the water flow speed and uranium extraction requirements of the sea trial area.

[0013] According to a preferred embodiment of the present invention, the seawater uranium extraction device can be arranged vertically or horizontally relative to the fixed object; wherein,

[0014] When the fixed object is a seabed fixed anchor, the connecting main rope and the safety auxiliary rope are fixed to the central area of ​​the seawater uranium extraction device through the reserved connection hole, and the seawater uranium extraction device is set vertically above the fixed object;

[0015] When the fixed object is a sea trial platform or a load-bearing rope, the connecting main rope and the safety auxiliary rope are fixed to the end of the seawater uranium extraction device through the reserved connection hole, and the seawater uranium extraction device is set horizontally relative to the fixed object.

[0016] According to a second aspect of the present invention, a method for implementing a floating seawater uranium extraction module suitable for sea trials is provided, comprising the following steps:

[0017] 1) To prepare a seawater uranium extraction device, a core is formed by alternately stacking a amine oxime-based membrane with a plastic mesh flow guide layer and a non-woven fabric, which is then encapsulated in a shell and fixed with water-permeable caps at both ends.

[0018] 2) Assemble and fix the balance float and balance counterweight to the reserved connection hole of the seawater uranium extraction device by means of cable, and determine the buoyancy of the balance float and the weight of the balance counterweight according to the buoyancy of the seawater uranium extraction device in water.

[0019] 3) Fix the main connecting rope and the safety auxiliary rope to the reserved connection hole of the seawater uranium extraction device, so that the main connecting rope and the safety auxiliary rope are symmetrically distributed or distributed as needed;

[0020] 4) Connect the free ends of the main connecting rope and the safety auxiliary rope to the fixed object, and drop the assembled module into the sea trial area. By adjusting the length of the main connecting rope and the weight of the counterweight, the seawater uranium extraction device is in a state of force balance at the set water depth.

[0021] 5) After the stationary module has stabilized buoyancy, the sea trial uranium extraction operation will be carried out. During the sea trial, the seawater uranium extraction device can adaptively adjust the flow angle according to the water flow direction.

[0022] Preferably, in step 4), if the fixed object is a seabed anchor, the anchor is first sunk to the seabed and fixed before being connected to the seawater uranium extraction device; if the fixed object is a sea trial platform or a load-bearing rope, the seawater uranium extraction device is directly connected to the fixed object; during the adjustment process, ensure that the flow channel of the seawater uranium extraction device maintains the same direction as the water flow.

[0023] Preferably, in step 3), both the main connecting rope and the safety auxiliary rope are made of 3-strand polyester rope, and their tensile strength is not less than 1.5 times the sum of the self-weight of the seawater uranium extraction device and the weight of the counterweight; the length of the main connecting rope is greater than the maximum water depth of the sea trial area, and the length of the safety auxiliary rope is 5%-10% longer than the main connecting rope.

[0024] The method is not only applicable to uranium extraction from seawater, but also to uranium extraction from salt lake brine and uranium extraction from warm wastewater from nuclear power plants. It can also be used to extract other resource-based chemical substances, including lithium, gold, strontium, cesium, and silver, from seawater.

[0025] The floating seawater uranium extraction module provided by the present invention has a sea trial period of 30-90 days. During this period, the uranium extraction amount of the seawater uranium extraction device is more than 3 times that of the traditional fixed module, and the amount of marine fouling organisms attached is reduced by more than 10% compared with the traditional fixed module.

[0026] This invention addresses the inherent shortcomings of traditional fixed uranium extraction schemes in sea trials by proposing a floating seawater uranium extraction module and its implementation method suitable for sea trials. The module is connected to a fixed device on the seabed or surface via a towing rope and safety rope. A counterweight and a buoy are mounted on the module, allowing it to adaptively adjust the flow angle according to the water flow direction, ensuring maximum seawater flow through the module. Furthermore, compared to traditional fixed structures, the floating design effectively reduces the probability of marine fouling organisms attaching, thus solving the core problem of traditional solutions.

[0027] Compared with existing technologies, the floating seawater uranium extraction module and its implementation method suitable for sea trials provided by the present invention have the following advantages:

[0028] The floating seawater uranium extraction module of the present invention has a simple structure, is easy to assemble, has a simple marine operation process, does not require complex construction technology, and is easy to promote and implement in engineering.

[0029] This invention is adaptable to a variety of application scenarios and sea conditions. It can be applied to natural marine environments such as open sea areas and harbor sea areas, as well as special water body scenarios such as the thermal discharge area of ​​nuclear power plants.

[0030] The seawater uranium extraction device can swing freely with the direction of water flow by virtue of its own force characteristics, so as to achieve adaptive adjustment of the flow angle and always keep the direction of water flow in the same direction as the flow channel of the seawater uranium extraction device, thereby ensuring the maximum water exchange capacity and significantly improving the uranium extraction efficiency.

[0031] In traditional fixed seawater uranium extraction modules, with the fixed object's position remaining unchanged, the seawater uranium extraction device can only adaptively adjust its position and angle within a limited range. In the marine environment, stationary objects are more likely to become attachment carriers for fouling organisms. However, this invention disrupts the attachment conditions of fouling organisms by dynamically swinging the seawater uranium extraction device, which can significantly reduce the amount of fouling organisms attached and effectively mitigate the adverse effects of biological pollution on the seawater uranium extraction effect.

[0032] Compared with traditional fixed uranium extraction methods, this invention can increase the uranium extraction yield of seawater uranium extraction materials by several times, greatly optimize uranium extraction efficiency, and provide strong support for the engineering application of seawater uranium extraction technology.

[0033] In summary, this invention provides a floating seawater uranium extraction module and its implementation method that are simple in structure, easy to assemble, and adaptable to various sea conditions. It effectively solves the problem of fixing seawater uranium extraction membrane components in real seawater environments during sea trials. While improving the water exchange capacity of the material, it can also effectively reduce the impact of marine fouling organisms, thus meeting the needs of engineering applications. Attached Figure Description

[0034] Figure 1 This is a schematic diagram of a floating seawater uranium extraction module according to a preferred embodiment of the present invention, wherein the seawater uranium extraction device is located in the vertical upward direction of the fixed object;

[0035] Figure 2 A schematic diagram of the structure of a floating seawater uranium extraction module according to another preferred embodiment of the present invention, wherein the seawater uranium extraction device is located in the horizontal direction of the fixed object;

[0036] The meanings of the reference numerals in the attached figures are as follows:

[0037] 1. Seawater uranium extraction device; 2. Balance buoy; 3. Balance weight; 4. Connecting main rope; 5. Safety auxiliary rope; 6. Fixture. Detailed Implementation

[0038] The present invention will be further described below with reference to specific embodiments. It should be understood that the following embodiments are for illustrative purposes only and are not intended to limit the scope of the invention. Unless otherwise specified, the techniques used in the embodiments are conventional practices in the art, or experimental methods recommended by the instrument manufacturer. Unless otherwise specified, the reagents and materials used in the embodiments are commercially available.

[0039] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0040] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0041] Example 1

[0042] like Figure 1 The diagram shows a floating seawater uranium extraction module according to a preferred embodiment of the present invention, comprising a seawater uranium extraction device 1, a balancing buoy 2, a balancing counterweight 3, a connecting main rope 4, a safety auxiliary rope 5, and a fixing device 6. The seawater uranium extraction device 1 is arranged vertically relative to the fixing device 6.

[0043] The seawater uranium extraction device 1 includes a metallo-oxime-based membrane, a plastic mesh flow guide layer, a non-woven fabric, an outer shell, and water-permeable end caps at both ends, used to adsorb uranium in seawater; the thickness of the plastic mesh flow guide layer is 1-5mm and the porosity is ≥70%; the metallo-oxime-based membrane, the plastic mesh flow guide layer, and the non-woven fabric are alternately stacked and rolled to form a core; the core is encapsulated in the outer shell; and the water-permeable end caps at both ends are fixed to the two ends of the outer shell by snap-fit ​​or adhesive.

[0044] The balancing float 2 can be made of seawater-resistant plastic or rubber. The balancing counterweight 3 can be a split-type sinker or an integral sinker. The balancing float 2 and the balancing counterweight 3 are connected to the upper and lower surfaces of the seawater uranium extraction device 1 respectively by polyester cables to coordinate the adjustment of the buoyancy and attitude stability of the seawater uranium extraction device 1 in seawater.

[0045] The weight of the counterweight is 3-5 times the buoyancy of the seawater uranium extraction device in water, and the buoyancy of the buoyant ball is 2-5 times the weight of the counterweight. The specific number of buoyant balls 2 and counterweights 3 can be adjusted according to the sea trial depth and sea conditions.

[0046] The anchor 6 is a seabed anchor. One end of the main rope 4 and the safety auxiliary rope 5 is fixedly connected to a pre-reserved connection hole in the middle area of ​​the seawater uranium extraction device, and the other end is connected to the anchor 6. This ensures that the seawater uranium extraction device maintains force balance in the seawater and can adaptively adjust the flow direction. The length of the safety auxiliary rope 5 is greater than the length of the main rope 4 to prevent the seawater uranium extraction device 1 from being lost and causing unnecessary property damage.

[0047] According to a preferred embodiment of the present invention, the shape of the seawater uranium extraction device 1 can be designed as a cylinder, cuboid, or cage, and its size can be adjusted according to the water flow velocity and uranium extraction requirements of the sea trial area.

[0048] According to this embodiment, a method for implementing a floating seawater uranium extraction module suitable for sea trials is also provided, including the following steps:

[0049] 1) Prepare seawater uranium extraction device 1 by alternately stacking and rolling a metallo-amine oxime-based plastic membrane, a mesh flow guiding layer, and a non-woven fabric to form a core, which is then encapsulated in a shell and the water-permeable caps at both ends are fixed.

[0050] 2) Assemble and fix the balance float 2 and balance counterweight 3 to the reserved connection hole of the seawater uranium extraction device 1 using polyester cable, and determine the buoyancy of the balance float and the weight of the balance counterweight based on the buoyancy of the seawater uranium extraction device 1 in the water.

[0051] 3) Fix the main connecting rope 4 and the safety auxiliary rope 5 to the reserved connection hole of the seawater uranium extraction device 1, so that the main connecting rope 2 and the safety auxiliary rope 3 are symmetrically distributed or distributed as needed;

[0052] 4) Connect the free ends of the main rope 4 and the safety auxiliary rope 5 to the fixed object 6 on the seabed, and drop the assembled module into the sea trial area. By adjusting the length of the main rope 2 and the weight of the counterweight 3, the seawater uranium extraction device is in a state of force balance at the set water depth in the vertical upward direction of the fixed object 6. During the adjustment process, ensure that the flow channel of the seawater uranium extraction device 1 keeps in the same direction as the water flow.

[0053] 5) After the stationary module has stabilized buoyancy, sea trial uranium extraction operations will be conducted. During the sea trial, the seawater uranium extraction device can adaptively adjust the flow angle according to the water flow direction.

[0054] In step 3), both the main rope 4 and the safety auxiliary rope 5 are made of 3-strand polyester rope, and their tensile strength is not less than 1.5 times the sum of the weight of the seawater uranium extraction device 1 and the weight of the counterweight 3. The length of the main rope 4 is greater than the maximum water depth of the sea trial area, and the length of the safety auxiliary rope 5 is 5%-10% longer than the main rope 4.

[0055] This method is applicable to uranium extraction from seawater, salt lake brine, or warm wastewater from nuclear power plants. It can also be used to extract resource-based chemical substances, including lithium, gold, strontium, cesium, and silver, from water bodies.

[0056] The floating seawater uranium extraction module provided by the present invention has a sea trial period of 30-90 days. During this period, the uranium extraction amount of the seawater uranium extraction device is more than 3 times that of the traditional fixed module, and the amount of marine fouling organisms attached is reduced by more than 10% compared with the traditional fixed module.

[0057] It should be understood that when using the vertical installation method, the anchor is a submerged anchor (such as a 200kg concrete anchor), and the installation point is on a hard or soft seabed substrate. With vertical force balance as the core, a buoy provides upward buoyancy, a counterweight provides downward gravity, and the length of the connecting main rope is adjusted to achieve vertical depth fixation of the module. The seawater uranium extraction module 1 primarily oscillates adaptively in the vertical plane, allowing for fine-tuning of the angle around the connecting main rope 4, always conforming to changes in the vertical direction of the water flow, with the flow channel exhibiting strong unidirectional alignment with the water flow. Seawater enters and exits through the permeable seals at the top and bottom of the outer shell of the seawater uranium extraction device 1, resulting in stable vertical water flow with minimal impact from seabed topographic disturbances. Therefore, the vertically installed module is particularly suitable for open sea areas with moderate depths (1 meter or more) and variable current directions, as well as areas with relatively flat seabed topography and no significant obstacles.

[0058] Example 2

[0059] like Figure 2 The diagram shows a floating seawater uranium extraction module according to another preferred embodiment of the present invention. Unlike the previous embodiment, in this embodiment, the seawater uranium extraction device 1 is horizontally positioned relative to the fixed object 6. Since other structures are largely the same, identical parts will not be described in detail, but only briefly.

[0060] The floating seawater uranium extraction module includes a seawater uranium extraction device 1, a balancing buoy 2, a balancing counterweight 3, a connecting main rope 4, a safety auxiliary rope 5, and a fixing object 6.

[0061] The fixed object 6 is a non-movable sea trial platform floating on the sea surface or a load-bearing rope fixed to a structure on both sides of the water body. The main rope 4 and the safety auxiliary rope 5 are fixed to the end of the seawater uranium extraction device 1 through the reserved connection hole, so that the seawater uranium extraction device 1 is set horizontally relative to the fixed object 6.

[0062] It should be understood that when using a horizontal installation method, the fixed object is a structure on the sea surface or on both sides of the water body (such as the load-bearing steel wire rope of an open channel protection dam), and the installation point is above the water surface or on a lateral structure of the water body. With horizontal force balance as the core, the connecting main rope and safety auxiliary rope provide horizontal tension, and the balancing buoy and counterweight work together to stabilize the horizontal attitude of the module and resist the impact of lateral water flow. The seawater uranium extraction module mainly oscillates adaptively in the horizontal plane, adjusting its attitude left and right along the horizontal direction of the fixed object to adapt to the lateral flow of water and avoid collisions between the module and the structure. Seawater enters and exits from the sides or ends of the module, resulting in a larger horizontal water flow contact area, suitable for water bodies with slow but stable flow rates (such as warm drainage open channels). Therefore, horizontally installed modules are particularly suitable for nearshore harbors, shallow sea areas, or around artificial structures (such as warm drainage open channels of nuclear power plants or dock platforms), scenarios with relatively stable or fixed water flow directions, and environments with shallow water depths (0.5-2 meters) requiring precise control of the module's horizontal position.

[0063] Application Implementation Case 1

[0064] This implementation case involved a sea trial conducted in the waters near Huangqi, Lianjiang County, Fuzhou City, Fujian Province. The sea trial employed a vertical fixing method, with the fixing object 6 being a 200kg cement anchor submerged on the seabed.

[0065] First, seawater uranium extraction material (ammonia oxime-based membrane), a flow guiding layer, and non-woven fabric (1-5mm thick, porosity ≥70%) are alternately stacked and rolled into a core. The core is then encapsulated within an outer shell, and water-permeable caps at both ends are fixed to the outer shell using snaps or adhesives, forming the seawater uranium extraction device 1. This device is a cylindrical assembly 1.2m long and 0.4m in diameter. On-site, the seawater uranium extraction device 1, the buoyancy ball 2, and the counterweight 3 are connected and assembled using nylon ropes. The buoyancy of the buoyancy ball 2 is set to 36kg, and the weight of the counterweight 3 is 12kg. The main connecting rope 4 and the safety auxiliary rope 5 are both made of 3-strand polyester rope. One end of each rope is fixed to the reserved connection hole of the seawater uranium extraction device 1, and the other end is securely connected to the anchor 6 (200kg cement anchor).

[0066] In this implementation case, the length of the safety auxiliary rope 5 is greater than that of the connecting main rope 4, and the length of the connecting main rope 4 is greater than the water depth at the deployment point. The sea trial water depth for the seawater uranium extraction device 1 is set at 1 meter. Under safe conditions of stable sea conditions, the entire floating seawater uranium extraction module is deployed into the sea. After the module reaches buoyancy equilibrium, the sea trial is initiated.

[0067] The module's status and uranium extraction effect were tested at 30, 60, and 90 days of sea trials. Results showed that the entire device structure remained intact, and the seawater uranium extraction device 1 was undamaged and unmissable. Compared to fixed seawater uranium extraction modules from the same location and batch, the floating module of this invention can adaptively adjust its angle according to the water flow direction, always maintaining the water flow direction in the same direction as the flow channel of the seawater uranium extraction device 1, thereby achieving maximum water exchange capacity. Simultaneously, the dynamic oscillation of the device and the relative movement of the water flow can disrupt the attachment conditions of fouling organisms, reducing their attachment amount. Experimental data shows that the uranium extraction amount of the seawater uranium extraction material in the floating module is 3-5 times that of the fixed module, and the amount of marine fouling organisms attached is reduced by 10%-30% compared to the fixed module.

[0068] Application Implementation Case 2

[0069] This implementation case involves a sea trial conducted in the waters near Sanya, Hainan Province, using a horizontally fixed method. The fixed object 6 is specifically a non-movable sea trial platform floating on the water surface.

[0070] First, seawater uranium extraction material (a methylamine oxime-based membrane), a flow-guiding layer, and non-woven fabric (1-5mm thick, porosity ≥70%) are alternately stacked and rolled into a core. The core is then encapsulated within an outer shell, and water-permeable caps at both ends are fixed to the outer shell using snaps or adhesives, forming the seawater uranium extraction device 1. This device is a rectangular stainless steel outer shell assembly measuring 1m long, 0.35m wide, and 0.35m high. On-site, the seawater uranium extraction device 1, the buoy 2, and the counterweight 3 are connected and assembled using nylon ropes. The buoyancy of the buoy 2 is 45kg, and the weight of the counterweight 3 is 15kg. The main connecting rope 4 and the safety auxiliary rope 5 are both made of 3-strand polyester rope. One end of each rope is fixed to the pre-reserved connection hole of the seawater uranium extraction device 1, and the other end is firmly connected to the fixed object 6 (an immovable sea trial platform).

[0071] In this implementation case, the length of the safety auxiliary rope 5 is greater than that of the connecting main rope 4, and the length of the connecting main rope 4 is greater than the water depth at the deployment point. The sea trial water depth for the seawater uranium extraction device 1 is set at 2 meters. Under safe sea conditions, the assembled floating seawater uranium extraction module is deployed into the sea, and the sea trial is initiated after the module's buoyancy is balanced.

[0072] Tests were conducted after 30, 60, and 90 days of sea trials. The results showed that the overall structure of the device remained intact, and the seawater uranium extraction device 1 was undamaged or missing. Experimental data indicated that, under the same location and batch conditions, the uranium extraction yield of the seawater uranium extraction material in the floating seawater uranium extraction module of this invention was three times that of the traditional fixed module, and the amount of marine fouling organisms attached was reduced by 25% compared to the fixed module.

[0073] Application Implementation Case 3

[0074] This implementation case involves a sea trial conducted in an open channel for the discharge of thermal wastewater from a nuclear power plant. A horizontal fixing method was adopted, and the fixing object 6 is specifically a load-bearing steel wire rope fixed to the protective dams on both sides of the open channel.

[0075] First, seawater uranium extraction material (ammonia oxime-based membrane), a flow guiding layer, and non-woven fabric (1-5mm thick, porosity ≥70%) are alternately stacked and rolled into a core. The core is then encapsulated within an outer shell, and water-permeable caps at both ends are fixed to the outer shell using snaps or adhesives, forming the seawater uranium extraction device 1. This device is a cage-shaped assembly 1.2m long and 0.4m in diameter. On-site, the seawater uranium extraction device 1, the balance float 2, and the balance weight 3 are connected and assembled using nylon ropes. The balance float 2 has a buoyancy of 50kg, and the balance weight 3 has a weight of 25kg. The main connecting rope 4 and the safety auxiliary rope 5 are both made of 3-strand polyester cable. One end of each rope is fixed to the reserved connection hole of the seawater uranium extraction device 1, and the other end is stably connected to the fixing object 6 (load-bearing steel wire rope).

[0076] In this implementation case, the length of the safety auxiliary rope 5 is greater than that of the connecting main rope 4, and the length of the connecting main rope 4 is greater than the water depth at the deployment point. The sea trial water depth for the seawater uranium extraction device 1 is set at 0.5 meters. Under safe conditions, the entire floating seawater uranium extraction module is deployed into the open channel and allowed to settle until buoyancy balance is achieved before initiating the sea trial.

[0077] Tests were conducted after 30, 60, and 90 days of sea trials. The results showed that the device structure was intact, and the seawater uranium extraction device 1 was undamaged or missing. Experimental data indicated that, under the same location and batch conditions, the uranium extraction yield of the seawater uranium extraction material in the floating seawater uranium extraction module of this invention was 10 times that of the traditional fixed module, and the amount of marine fouling organisms attached was reduced by 75% compared to the fixed module.

[0078] The above description is merely a preferred embodiment of the present invention and is not intended to limit the scope of the invention. Various variations can be made to the above embodiments of the present invention. All simple and equivalent changes and modifications made in accordance with the claims and description of this application fall within the protection scope of the claims of this patent. All aspects not described in detail in this invention are conventional technical content.

Claims

1. A floating seawater uranium extraction module suitable for sea trials, characterized in that, The device includes a seawater uranium extraction device (1), a balancing float (2), a balancing counterweight (3), a connecting main rope (4), a safety auxiliary rope (5), and a fixing device (6). The seawater uranium extraction device (1) includes a amine oxime-based membrane, a plastic mesh flow guide layer, a non-woven fabric, a shell, and water-permeable end caps for adsorbing uranium in seawater. The balancing float (2) and the balancing counterweight (3) are respectively connected to the upper and lower surfaces of the seawater uranium extraction device (1) to coordinately adjust the buoyancy and attitude stability of the seawater uranium extraction device (1) in seawater. One end of the connecting main rope (4) and the safety auxiliary rope (5) are fixedly connected to the seawater uranium extraction device (1), and the other end is detachably connected to the fixing device (6) so that the seawater uranium extraction device (1) maintains force balance in seawater and can adaptively adjust the flow direction.

2. The floating seawater uranium extraction module suitable for sea trials according to claim 1, characterized in that, In the seawater uranium extraction device (1), the thickness of the plastic mesh flow guide layer is 1-5mm and the porosity is ≥70%. The amine oxime base membrane, the plastic mesh flow guide layer, and the non-woven fabric are alternately stacked and rolled to form a core. The core is encapsulated in the shell, and the water-permeable caps at both ends are fixed to the two ends of the shell by snap-fit ​​or adhesive.

3. The floating seawater uranium extraction module suitable for sea trials according to claim 1, characterized in that, The weight of the counterweight (3) is 3-5 times the buoyancy of the seawater uranium extraction device (1) in water, and the buoyancy of the buoy (2) is 2-5 times the weight of the counterweight (3). The buoy (2) is made of seawater-resistant plastic. The counterweight (3) is an integral sinker or a detachable and combinable sinker. The number of the buoy (2) and the counterweight (3) can be adjusted according to the sea trial depth and sea conditions.

4. The floating seawater uranium extraction module suitable for sea trials according to claim 1, characterized in that, The outer shell of the seawater uranium extraction device (1) is provided with at least two reserved connection holes. The balance float (2) and the balance counterweight (3) are fixed to the reserved connection holes by cables. The main connecting rope (4) and the safety auxiliary rope (5) are fixed to the central area or end of the seawater uranium extraction device (1) by the reserved connection holes, and the length of the safety auxiliary rope (5) is greater than the length of the main connecting rope.

5. The floating seawater uranium extraction module suitable for sea trials according to claim 1, characterized in that, The fixed object (6) is a fixed anchor body on the seabed, an immovable sea trial platform floating on the sea surface, or a load-bearing rope fixed to the two sides of the water body; the shape of the seawater uranium extraction device (1) is cylindrical, cuboid, or cage-shaped, and its size can be adjusted according to the water flow speed and uranium extraction requirements of the sea trial area.

6. The floating seawater uranium extraction module suitable for sea trials according to claim 5, characterized in that, The seawater uranium extraction device (1) is arranged vertically or horizontally relative to the fixed object (6); wherein, When the fixed object (6) is a seabed fixed anchor, the connecting main rope (4) and the safety auxiliary rope (5) are fixed to the central area of ​​the seawater uranium extraction device (1) through the reserved connection hole, and the seawater uranium extraction device (1) is set vertically above the fixed object (6). When the fixed object (6) is a sea trial platform or load-bearing rope floating on the sea surface, the connecting main rope (4) and the safety auxiliary rope (5) are fixed to the end of the seawater uranium extraction device (1) through the reserved connection hole, and the seawater uranium extraction device (1) is set horizontally relative to the fixed object (6).

7. A method for implementing a floating seawater uranium extraction module suitable for sea trials, characterized in that, Includes the following steps: 1) Preparation of seawater uranium extraction device (1): The core is formed by alternately stacking a amine oxime-based membrane with a plastic mesh flow guide layer and a non-woven fabric, and then encapsulating it in the shell and fixing the water-permeable heads at both ends. 2) Assemble and fix the balance float (2) and balance counterweight (3) to the reserved connection hole of the seawater uranium extraction device (1) by means of cable, and determine the buoyancy of the balance float (2) and the weight of the balance counterweight (3) according to the buoyancy of the seawater uranium extraction device (1) in the water. 3) Fix the main connecting rope (4) and the safety auxiliary rope (5) to the reserved connecting hole of the seawater uranium extraction device (1), so that the main connecting rope (4) and the safety auxiliary rope (5) are symmetrically distributed or distributed as needed; 4) Connect the free ends of the connecting main rope (4) and the safety auxiliary rope (5) to the fixed object (6), and drop the assembled module into the sea trial area. By adjusting the length of the connecting main rope (4) and the weight of the counterweight (3), the seawater uranium extraction device is in a state of force balance at the set water depth. 5) After the stationary module has stabilized buoyancy, the sea trial uranium extraction operation will be carried out. During the sea trial, the seawater uranium extraction device can adaptively adjust the flow angle according to the water flow direction.

8. The method for implementing the floating seawater uranium extraction module suitable for sea trials according to claim 7, characterized in that, In step 4), if the fixed object (6) is a seabed anchor, the anchor is first sunk to the seabed and fixed, and then the seawater uranium extraction device (1) is connected; if the fixed object (6) is a sea trial platform or a load-bearing rope, the seawater uranium extraction device (1) is directly connected to the fixed object (6); during the adjustment process, ensure that the flow channel of the seawater uranium extraction device and the water flow direction are in the same direction.

9. The method for implementing the floating seawater uranium extraction module suitable for sea trials according to claim 7, characterized in that, In step 3), both the connecting main rope (4) and the safety auxiliary rope (5) are made of 3-strand polyester rope, and their tensile strength is not less than 1.5 times the sum of the self-weight of the seawater uranium extraction device and the weight of the counterweight. The length of the connecting main rope (4) is greater than the maximum water depth of the sea trial area, and the length of the safety auxiliary rope (5) is 5%-10% longer than the connecting main rope.

10. The method for implementing the floating seawater uranium extraction module suitable for sea trials according to claim 7, characterized in that, The method is applicable to uranium extraction from seawater, salt lake brine, or warm wastewater from nuclear power plants, and can also be used to extract chemical substances, including lithium, gold, strontium, cesium, and silver, from water bodies.

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