A nuclear waste sewage treatment device

Abstract

The present invention discloses a nuclear waste sewage treatment device, which relates to a nuclear waste treatment technology field, including a gel precipitation tank, wherein the gel precipitation tank includes a gravity pressure plate, which is arranged inside the gel precipitation tank through a retractable structure, and is used to move downward to squeeze the sediment; a pressing structure, which is arranged on the gravity pressure plate, and is used to further squeeze the sediment; a bottom plug plate, and a bottom plug plate is arranged on the primary discharge port, and is used to receive the sediment; a tank body moving structure, which is arranged outside the gel precipitation tank, and is used to drive the gel precipitation tank to move longitudinally, and remove the bottom plug plate and the sediment on the bottom plug plate. The present application uses the gravity pressure plate to preliminarily squeeze the produced sediment and preliminarily remove the moisture in the sediment, and then uses the pressing structure to further squeeze the sediment, and ensure that the moisture in the sediment is further removed.

Description

Technical Field

[0001] The present invention relates to the technical field of nuclear waste treatment, and specifically to a nuclear waste sewage treatment device. Background Art

[0002] In China, for the treatment of nuclear wastewater, since most compounds in the wastewater (such as hydroxides, carbonates, and phosphates of radionuclides) are insoluble, they can be removed during the treatment process. The purpose of chemical treatment is to transfer and concentrate the radionuclides in the wastewater into a small amount of sludge, so that there is almost no radioactivity in the deposited wastewater, and thus the discharge standard can be achieved. However, this method requires a large cost.

[0003] A common method for wastewater treatment is to directly add a certain amount of water-absorbing resin to the nuclear wastewater in proportion, use the chemical precipitation method to concentrate the nuclear wastewater, treat the nuclear wastewater, and then encapsulate the above-mentioned precipitate with cement concrete and bury it deeply. However, the precipitate contains a large amount of water, and over time, the water will affect the setting force of the cement concrete. Summary of the Invention

[0004] The purpose of the present invention is to provide a nuclear waste sewage treatment device to solve the problems raised in the above background art.

[0005] To achieve the above purpose, the present invention provides the following technical solutions:

[0006] A nuclear waste sewage treatment device includes

[0007] A filter tank, connected to the wastewater inlet pipe, for filtering out large impurities in the nuclear wastewater;

[0008] A resin mixing tank, connected to the output end of the filter tank through a wastewater circulation pipe. An adding pipe is arranged at the top of the resin mixing tank for adding water-absorbing resin;

[0009] A gel precipitation tank, connected to the output end of the resin mixing tank through a precipitation circulation pipe. A primary discharge port is arranged at the bottom of the precipitation circulation pipe, and a wastewater discharge port is connected and arranged on the side of the precipitation circulation pipe.

[0010] As a further scheme of the present invention: The gel precipitation tank includes

[0011] A gravity pressing plate, arranged inside the gel precipitation tank through a retracting and releasing structure, for moving downward to extrude the precipitate;

[0012] A pressing structure, arranged on the gravity pressing plate, for further extruding the precipitate;

[0013] A bottom plug plate, and a bottom plug plate is arranged on the primary discharge port for receiving the precipitate;

[0014] The tank body moving structure is arranged outside the gel precipitation tank and is used to drive the gel precipitation tank to move longitudinally to remove the bottom plug plate and the sediment on the bottom plug plate.

[0015] As a further scheme of the present invention: The retracting and releasing structure includes a retracting and releasing power component, a tensioning rope, and a power support plate. A power support plate is fixed inside the gel precipitation tank, a retracting and releasing power component is fixed on the power support plate, a tensioning rope is arranged at the output end of the retracting and releasing power component, and the end of the tensioning rope is installed on the gravity pressing plate.

[0016] As a further scheme of the present invention: The retracting and releasing power component includes a driving motor, a conveying roller, a winding roller, a rotating shaft, and a conveyor belt. A driving motor is fixed on the power support plate, the driving motor is drivingly connected to the rotating shaft, a conveying roller and a winding roller are fixed on the rotating shaft, a tensioning rope is fixed on the winding roller, and a conveyor belt is arranged between adjacent conveying rollers for conveying.

[0017] As a further scheme of the present invention: The pressing structure includes a pressing plate, a pressing fixed sleeve, a pressing groove, a pressing hinge rod, a pressing hinge seat, a pressing motor, and a pressing bidirectional screw. A pressing groove is formed on the gravity pressing plate, a pressing motor is fixed on the side of the pressing groove, the pressing motor is drivingly connected to the pressing bidirectional screw, pressing fixed sleeves are symmetrically and threadedly fixed on the pressing bidirectional screw, a pressing hinge seat is fixed at the bottom of the pressing fixed sleeve, a pressing hinge rod is hinged on the pressing hinge seat, and the end of the pressing hinge rod is hinged on the top of the pressing plate.

[0018] As a further scheme of the present invention: The tank body moving structure includes a support frame, a towing rope, and a towing motor. The towing motor is fixed at a fixed position, the towing motor is drivingly connected to a towing roller, a towing rope is fixed on the towing roller, the end of the towing rope is fixed to a support frame, the support frame is fixed to the gel precipitation tank, and the support frame is slidably connected to the fixed position.

[0019] As a further scheme of the present invention: The bottom plug plate is sealed at the bottom of the primary blanking port through a sealing structure. The sealing structure includes a sliding plate, a connecting rod, a popping-up plate, a sealing plate, a bottom spring, a fixing groove, and a popping-up spring. A fixing groove is formed at the bottom of the gel precipitation tank, the fixing groove is T-shaped, a popping-up spring is fixed inside the fixing groove, the end of the popping-up spring is fixed to a sliding plate, the sliding plate is slidably connected to the fixing groove, a connecting rod is fixed on the side of the sliding plate, the end of the connecting rod is fixed to a popping-up plate, a bottom spring is fixed between the popping-up plate and the fixing groove, a sealing plate is fixed on the bottom plug plate, and the sealing position between the bottom plug plate and the primary blanking port is trapezoidal.

[0020] As a further solution of the present invention: a screen is provided on the side of the gel precipitation tank, a wastewater discharge port is provided between the screen and the gel precipitation tank, the wastewater discharge port leads out of the gel precipitation tank, a telescopic rod is fixed on the gravity pressing plate, and a limiting plate is fixed at the end of the telescopic rod.

[0021] Compared with the prior art, the beneficial effects of the present invention are as follows: by using the gravity pressing plate in this application, the produced precipitate is preliminarily compacted, and the water in the precipitate is preliminarily removed. Subsequently, by using the compacting structure, the precipitate can be further extruded to ensure further removal of the water in the precipitate; by adopting a resin mixing tank and a gel precipitation tank in this application, the wastewater and resin can be fully mixed by the resin mixing tank, and then the precipitated mixed resin is transported to the gel precipitation tank for extrusion to squeeze out the water; by providing a filtration tank in this application, the impurities in the sewage can be directly removed, reducing the subsequent solidification cost required. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic structural diagram of a nuclear waste sewage treatment device.

[0023] Figure 2 It is a schematic structural diagram of a gel precipitation tank in a nuclear waste sewage treatment device.

[0024] Figure 3 It is a schematic enlarged partial structure diagram A in a nuclear waste sewage treatment device.

[0025] Figure 4 It is a schematic sealing structure diagram of a nuclear waste sewage treatment device.

[0026] Figure 5 It is a schematic structure diagram of a winding and unwinding power component in a nuclear waste sewage treatment device.

[0027] Description of the reference numerals: 1, filtration tank; 2, resin mixing tank; 3, precipitation flow pipeline; 4, primary feeding port; 5, wastewater discharge port; 6, gel precipitation tank; 7, addition pipeline; 8, wastewater flow pipeline; 9, compacting groove; 10, compacting fixing sleeve; 11, compacting bidirectional screw; 12, compacting motor; 13, compacting hinge seat; 14, compacting hinge rod; 15, power support plate; 16, conveying roller; 17, tensioning rope; 18, compacting plate; 19, towing rope; 20, support frame; 21, bottom plug plate; 22, screen; 23, gravity pressing plate; 24, rotating shaft; 25, winding roller; 26, conveyor belt; 27, sliding plate; 28, connecting rod; 29, popping plate; 30, sealing plate; 31, bottom spring; 32, fixing groove; 33, popping spring; 34, driving motor. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0028] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0029] Please refer to Figures 1 to 3 , in an embodiment of the present invention, a nuclear waste sewage treatment device includes a filtration tank 1, a resin mixing tank 2, and a gel precipitation tank 6. The filtration tank 1 is connected to a wastewater inlet pipeline and is used to filter out large impurities in the nuclear wastewater, that is, to remove impurities from the wastewater and reduce the cost required for subsequent treatment. Subsequently, the resin mixing tank 2 is connected to the output end of the filtration tank 1 through a wastewater circulation pipeline 8 and is used to receive the wastewater filtered by the filtration tank 1. An addition pipeline 7 is provided at the top of the resin mixing tank 2 for adding water-absorbing resin. After the water-absorbing resin is added from the addition pipeline 7, the stirring structure inside the resin mixing tank 2 is used for stirring so that the wastewater and the water-absorbing resin are mixed. The gel precipitation tank 6 is connected to the output end of the resin mixing tank 2 through a precipitation circulation pipeline 3, that is, the preliminarily precipitated mixture enters the inside of the gel precipitation tank 6 through the precipitation circulation pipeline 3. A primary discharge port 4 is provided at the bottom of the precipitation circulation pipeline 3 for taking out the precipitated matter that has been extruded, and a wastewater discharge port 5 is connected to the side of the precipitation circulation pipeline 3 for squeezing out the remaining water in the precipitated matter.

[0030] As a further embodiment of the present application, please refer to Figure 1 and Figure 2 , wherein the gel precipitation tank 6 includes a gravity pressing plate 23, a pressing structure, a bottom plug plate 21, and a tank body moving structure. First, the gravity pressing plate 23 is arranged inside the gel precipitation tank 6 through a retracting and releasing structure and is used to move downward to squeeze the precipitated matter. The gravity pressing plate 23 is a plate with a relatively large weight and is used to directly squeeze the precipitated matter. The pressing structure is arranged on the gravity pressing plate 23 and is used to further squeeze the precipitated matter. When the gravity pressing plate 23 reaches the bottom, the pressing structure is used to further squeeze the precipitated matter. A bottom plug plate 21 is provided on the primary discharge port 4 and is used to receive the precipitated matter, that is, the precipitated matter will be placed on the bottom plug plate 21 for squeezing. The bottom plug plate 21 is fixed on the ground. In order to take out the precipitated matter, the tank body moving structure is arranged outside the gel precipitation tank 6 and is used to drive the gel precipitation tank 6 to move longitudinally. When the gel precipitation tank 6 is lifted upward, the gel precipitation tank 6 is separated from the bottom plug plate 21, so that the precipitated matter on the bottom plug plate 21 can be taken out and the bottom plug plate 21 and the precipitated matter on the bottom plug plate 21 can be removed.

[0031] As a further embodiment of the present application, please refer to Figure 1 , Figure 2 and Figure 5 , in which in order to realize the longitudinal movement of the gravity pressing plate 23, the retracting and releasing structure includes a retracting and releasing power component, a tensioning rope 17 and a power support plate 15. Among them, the power support plate 15 is fixed inside the gel precipitation tank 6, the retracting and releasing power component is fixed on the power support plate 15, the output end of the retracting and releasing power component is provided with the tensioning rope 17, and the end of the tensioning rope 17 is installed on the gravity pressing plate 23. That is, the retracting and releasing power component is used to realize the winding of the tensioning rope 17, so as to realize the longitudinal pulling of the gravity pressing plate 23.

[0032] As a further embodiment of the present application, please refer to Figure 1 , Figure 2 and Figure 5 , in which in order to wind the tensioning rope 17, the retracting and releasing power component includes a driving motor 34, a conveying roller 16, a winding roller 25, a rotating shaft 24 and a conveyor belt 26. That is, first, the driving motor 34 is fixed on the power support plate 15, the driving motor 34 is drivingly connected to the rotating shaft 24, the conveying roller 16 and the winding roller 25 are fixed on the rotating shaft 24, the tensioning rope 17 is fixed on the winding roller 25, and the conveyor belt 26 is arranged between adjacent conveying rollers 16 for transmission. In this embodiment, the driving motor 34 drives the rotating shaft 24 to rotate, and then drives the conveying roller 16 and the winding roller 25 to rotate, so as to realize the winding of the tensioning rope 17. In order to ensure the stability of the gravity pressing plate 23, two groups of tensioning ropes 17 are provided. Therefore, under the action of the conveyor belt 26, the adjacent tensioning ropes 17 are pulled, so as to stably lift the gravity pressing plate 23.

[0033] As a further embodiment of the present application, please refer to Figure 1 , Figure 2 and Figure 3 , in which in order to further extrude the precipitate, the pressing structure includes a pressing plate 18, a pressing fixed sleeve 10, a pressing groove 9, a pressing hinge rod 14, a pressing hinge seat 13, a pressing motor 12 and a pressing double screw 11. That is, when the gravity pressing plate 23 is lowered to the lowest position, the position of the gravity pressing plate 23 is limited by the corresponding structure. Subsequently, a pressing groove 9 is opened on the gravity pressing plate 23, a pressing motor 12 is fixed on the side of the pressing groove 9, the pressing motor 12 is drivingly connected to the pressing double screw 11, the pressing fixed sleeves 10 are symmetrically and threadedly fixed on the pressing double screw 11, the pressing hinge seats 13 are fixed at the bottoms of the pressing fixed sleeves 10, the pressing hinge rods 14 are hinged on the pressing hinge seats 13, and the ends of the pressing hinge rods 14 are hinged on the top of the pressing plate 18. That is, when the pressing motor 12 drives the pressing double screw 11 to rotate, the angle of the pressing hinge rod 14 is adjusted, so as to adjust the longitudinal height of the pressing plate 18 and further press the precipitate.

[0034] As a further embodiment of the present application, please refer to Figure 1 and Figure 2 , in which in order to drive the gel precipitation tank 6 to move longitudinally, the tank body moving structure includes a support frame 20, a traction rope 19 and a traction motor. That is, first, the traction motor is fixed at a fixed place, the traction motor is drivingly connected to a traction roller, the traction rope 19 is fixed on the traction roller, the end of the traction rope 19 is fixed with the support frame 20, the support frame 20 is fixed on the gel precipitation tank 6, and the support frame 20 is slidably connected to the fixed place. Among them, the traction motor is used to drive the traction roller to rotate, so as to realize the retraction and release of the traction rope 19, realize the longitudinal pulling of the support frame 20, and realize the longitudinal movement of the gel precipitation tank 6.

[0035] As a further embodiment of the present application, please refer to Figure 1 , Figure 2 and Figure 4 , in which in order to seal the connection between the bottom plug plate 21 and the gel precipitation tank 6, the bottom plug plate 21 is sealed at the bottom of the primary blanking port 4 through a sealing structure. The sealing structure includes a sliding plate 27, a connecting rod 28, a spring-up plate 29, a sealing plate 30, a bottom spring 31, a fixing groove 32 and a spring-up spring 33. A fixing groove 32 is opened at the bottom of the gel precipitation tank 6, the fixing groove 32 is T-shaped, a spring-up spring 33 is fixed inside the fixing groove 32, the end of the spring-up spring 33 is fixed with the sliding plate 27, the sliding plate 27 is slidably connected to the fixing groove 32, a connecting rod 28 is fixed on the side of the sliding plate 27, the end of the connecting rod 28 is fixed with the spring-up plate 29, a bottom spring 31 is fixed between the spring-up plate 29 and the fixing groove 32, and a sealing plate 30 is fixed on the bottom plug plate 21. The sealing position between the bottom plug plate 21 and the primary blanking port 4 is trapezoidal. That is, the sealing plate 30 is used to seal the bottom plug plate 21 and the gel precipitation tank 6. However, when the gel precipitation tank 6 is lifted, under the action of the spring-up spring 33 and the bottom spring 31, and the fixed connection between the bottom plug plate 21 and the fixed place, the release of the sealing plate 30 is realized, and the separation of the bottom plug plate 21 and the gel precipitation tank 6 is realized.

[0036] As a further embodiment of the present application, please refer to Figure 1 and Figure 2 , in which a screen 22 is arranged on the side of the gel precipitation tank 6, a waste water discharge port 5 is arranged between the screen 22 and the gel precipitation tank 6 for guiding the outflow of waste water. The waste water discharge port 5 leads out of the gel precipitation tank 6. A telescopic rod is fixed on the gravity pressing plate 23, and a limiting plate is fixed at the end of the telescopic rod. When the gravity pressing plate 23 is lowered to the lowest position, the telescopic rod is used to drive the limiting plate to move, so that the limiting plate tightly presses against the side wall of the gel precipitation tank 6, thereby realizing the limitation of the position of the gravity pressing plate 23. Subsequently, a pressing structure is used to press the precipitation finished product.

[0037] The working principle of the present invention is as follows: In this application, first, the wastewater passes through the filtration tank 1 for preliminary precipitation, so that the wastewater to be treated reaches the resin mixing tank 2. Adsorption resin is added through the addition pipeline 7, and the adsorption resin and the wastewater are fully stirred by the stirring structure inside the resin mixing tank 2. Subsequently, the semi-finished product of the preliminary precipitation enters the gel precipitation tank 6 through the precipitation circulation pipeline 3 for sufficient precipitation. Then, the driving motor 34 drives the rotating shaft 24, which drives the conveying roller 16 and the winding roller 25, so that the tensioning rope 17 is relaxed, thereby enabling the gravity pressing plate 23 to move downward, squeezing the precipitate sufficiently, squeezing the water in the precipitate, and discharging it from the wastewater discharge port 5. The telescopic rod drives the limiting plate to move, so that the limiting plate tightly presses against the side wall of the gel precipitation tank 6, thereby realizing the limitation of the position of the gravity pressing plate 23. Then, the pressing motor 12 drives the pressing bidirectional screw 11, so that the distance between the pressing fixing sleeves 10 changes. Subsequently, the pressing plate 18 further squeezes the precipitate. After the squeezing is completed, due to the winding of the traction rope 19, the support frame 20 moves upward, so that the gel precipitation tank 6 moves upward. Under the action of the elastic spring 33 and the bottom spring 31, and the fixed connection between the bottom plug plate 21 and the fixed part, the release of the sealing plate 30 is realized, and the separation of the bottom plug plate 21 and the gel precipitation tank 6 is achieved, so that the precipitate placed on the bottom plug plate 21 is separated.

[0038] For those skilled in the art, it is obvious that the present invention is not limited to the details of the above exemplary embodiments, and without departing from the spirit or basic characteristics of the present invention, the present invention can be implemented in other specific forms. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting. The scope of the present invention is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present invention. Any reference signs in the claims should not be regarded as limiting the claims involved.

[0039] In addition, it should be understood that although this specification is described according to embodiments, not every embodiment only contains an independent technical solution. This narrative way of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A nuclear waste sewage treatment device, characterized in that, Including A filter tank (1) connected to a wastewater inlet pipe for filtering out large impurities in nuclear wastewater; A resin mixing tank (2) connected to the output end of the filter tank (1) through a wastewater circulation pipe (8). An adding pipe (7) is arranged at the top of the resin mixing tank (2) for adding water-absorbing resin; A gel precipitation tank (6) connected to the output end of the resin mixing tank (2) through a precipitation circulation pipe (3). A primary discharge port (4) is arranged at the bottom of the precipitation circulation pipe (3), and a wastewater discharge port (5) is connected to the side of the precipitation circulation pipe (3); The gel precipitation tank (6) includes: A gravity pressing plate (23) arranged inside the gel precipitation tank (6) through a retracting and releasing structure for moving downward to extrude the precipitate; A pressing structure arranged on the gravity pressing plate (23) for further extruding the precipitate; A bottom plug plate (21) is arranged on the primary discharge port (4) for receiving the precipitate; A tank body moving structure arranged outside the gel precipitation tank (6) for driving the gel precipitation tank (6) to move longitudinally to remove the bottom plug plate (21) and the precipitate on the bottom plug plate (21); The retracting and releasing structure includes a retracting and releasing power component, a tensioning rope (17) and a power support plate (15). A power support plate (15) is fixed inside the gel precipitation tank (6). A retracting and releasing power component is fixed on the power support plate (15). The output end of the retracting and releasing power component is provided with a tensioning rope (17), and the end of the tensioning rope (17) is installed on the gravity pressing plate (23); The retracting and releasing power component includes a driving motor (34), a conveying roller (16), a winding roller (25), a rotating shaft (24) and a conveyor belt (26). A driving motor (34) is fixed on the power support plate (15). The driving motor (34) is drivingly connected to the rotating shaft (24). A conveying roller (16) and a winding roller (25) are fixed on the rotating shaft (24). The tensioning rope (17) is fixed on the winding roller (25), and a conveyor belt (26) is arranged for conveying between adjacent conveying rollers (16); The pressing structure includes a pressing plate (18), a pressing fixing sleeve (10), a pressing groove (9), a pressing hinge rod (14), a pressing hinge seat (13), a pressing motor (12) and a pressing double screw (11). A pressing groove (9) is formed on the gravity pressing plate (23). A pressing motor (12) is fixed to the side of the pressing groove (9). The pressing motor (12) is drivingly connected to the pressing double screw (11). Pressing fixing sleeves (10) are symmetrically and threadedly fixed on the pressing double screw (11). A pressing hinge seat (13) is fixed to the bottom of the pressing fixing sleeve (10). A pressing hinge rod (14) is hinged on the pressing hinge seat (13), and the end of the pressing hinge rod (14) is hinged to the top of the pressing plate (18).

2. The nuclear waste sewage treatment device according to claim 1, characterized in that, The tank moving structure includes a support frame (20), a towing rope (19), and a towing motor. The towing motor is fixed at a fixed position. The towing motor is drivingly connected to a towing roller. The towing rope (19) is fixed on the towing roller. The end of the towing rope (19) is fixed with a support frame (20). The support frame (20) is fixed on the gel precipitation tank (6). The support frame (20) is slidably connected to the fixed position.

3. The nuclear waste sewage treatment device according to claim 1, characterized in that, The bottom plug plate (21) is sealed at the bottom of the primary blanking port (4) through a sealing structure. The sealing structure includes a sliding plate (27), a connecting rod (28), a popping-up plate (29), a sealing plate (30), a bottom spring (31), a fixing groove (32), and a popping-up spring (33). A fixing groove (32) is formed at the bottom of the gel precipitation tank (6). The fixing groove (32) is in a T shape. A popping-up spring (33) is fixed inside the fixing groove (32). The end of the popping-up spring (33) is fixed with a sliding plate (27). The sliding plate (27) is slidably connected to the fixing groove (32). A connecting rod (28) is fixed to the side of the sliding plate (27). The end of the connecting rod (28) is fixed with a popping-up plate (29). A bottom spring (31) is fixed between the popping-up plate (29) and the fixing groove (32). A sealing plate (30) is fixed on the bottom plug plate (21). The sealing position between the bottom plug plate (21) and the primary blanking port (4) is trapezoidal.

4. The nuclear waste sewage treatment device according to claim 1, characterized in that, A screen (22) is arranged on the side of the gel precipitation tank (6). A wastewater discharge port (5) is arranged between the screen (22) and the gel precipitation tank (6). The wastewater discharge port (5) leads out of the gel precipitation tank (6). A telescopic rod is fixed on the gravity pressing plate (23), and a limiting plate is fixed at the end of the telescopic rod.

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