Heavy metal wastewater ion exchange treatment device

Abstract

The utility model discloses a heavy metal wastewater ion exchange treatment device which comprises a tank body, a first conveying pipeline, a second conveying pipeline and an ion exchange module, the first conveying pipeline is connected to the top of the tank body, the second conveying pipeline is connected to the bottom of the tank body, and the ion exchange module is connected to the tank body. The ion exchange module is mounted in the tank body; the ion exchange module comprises a first filter plate, a plurality of partition plates and a plurality of ion exchange units; the first filter plate is arranged at the bottom of the tank body; the plurality of partition plates are arranged on the top side surface of the first filter plate, and are combined with the first filter plate to form a plurality of accommodating cavities; the ion exchange units are matched with the containing cavities in a one-to-one correspondence mode, and each ion exchange unit can be movably embedded into the corresponding containing cavity. The modular arrangement of the ion exchange units improves the arrangement flexibility of the ion exchange system, and is convenient to disassemble, assemble and maintain, expand the system and overhaul and maintain.

Description

TECHNICAL FIELD

[0001] The utility model relates to ion exchange device technical field especially, it is a kind of heavy metal wastewater ion exchange treatment device. BACKGROUND

[0002] Ion exchange device is a kind of equipment using ion exchange principle to remove ion contaminant in aqueous solution or other liquid, is widely used in water treatment, chemical industry, pharmacy, metallurgy and other fields. Its core function is to exchange through ion exchange resin (or adsorbent) and the ion in solution, to remove or recycle specific ion. The device can effectively remove hardness ion, heavy metal ion, radioactive material etc. in water. Specifically, ion exchange refers to the process of reversible exchange between soluble ion and the ion on insoluble ion exchange resin, and ion exchange resin is a kind of porous material containing functional groups, common functional groups include cation exchange group (such as sulfonic acid group) and anion exchange group (such as quaternary ammonium group), when the solution with target ion passes through ion exchange resin, the ion on resin exchanges with the ion in solution, to achieve the purpose of removal or replacement.

[0003] The resin filling mode in existing ion exchange treatment device generally includes single-bed filling and mixed-bed filling. For the treatment of heavy metal wastewater, single-bed filling system of cation exchange resin is generally used, resin is filled in the inside of tank, and heavy metal wastewater is treated. When the treatment capacity of resin decreases to preset range, resin is regenerated by regenerant. However, the resin bed layer design of this kind of ion exchange treatment device is fixed, cannot be flexibly adjusted according to actual treatment demand, and brings inconvenience for maintenance and regeneration of ion exchange resin. UTILITARY MODEL CONTENT

[0004] Therefore, it is necessary to provide a heavy metal wastewater ion exchange treatment device for the technical problem of fixed resin bed layer structure design and insufficient flexibility of existing ion exchange treatment device.

[0005] A heavy metal wastewater ion exchange treatment device, the heavy metal wastewater ion exchange treatment device includes tank, first conveying pipeline, second conveying pipeline and ion exchange module, the first conveying pipeline is connected to the top of tank, the second conveying pipeline is connected to the bottom of tank, and the ion exchange module is installed in the inside of tank.

[0006] The ion exchange module comprises a first filter plate, a plurality of partition plates and a plurality of ion exchange units, the first filter plate is arranged at the bottom of the tank body; the plurality of partition plates are arranged on the top side surface of the first filter plate, and the plurality of partition plates are arranged in central symmetry with the geometric center of the first filter plate as the axis, so as to form a plurality of accommodation cavities in combination with the first filter plate; the plurality of ion exchange units are correspondingly matched with the plurality of accommodation cavities one by one, and each ion exchange unit can be movably embedded into the corresponding accommodation cavity, so as to realize the modularization of the ion exchange unit.

[0007] In one embodiment, each ion exchange unit described above is arranged as a filling frame body for filling ion exchange resin, and the outer wall of the filling frame body can be connected with the inner wall of the corresponding accommodation cavity, so that the filling frame body can be closely embedded into the accommodation cavity.

[0008] In one embodiment, the top outer wall edge of the filling frame body is provided with a sealing member, which is pressed against the inner wall of the accommodation cavity when the filling frame body is embedded into the corresponding accommodation cavity.

[0009] In one embodiment, the bottom wall of the filling frame body is arranged as a second filter plate, which is matched and abutted with the corresponding first filter plate when the filling frame body is embedded into the corresponding accommodation cavity, and the plate hole of the second filter plate is in communication with the plate hole of the first filter plate.

[0010] In one embodiment, the heavy metal wastewater ion exchange treatment device further comprises a water distribution mechanism arranged at the top of the tank body, and the input end of the water distribution mechanism is connected with the first conveying pipeline.

[0011] In one embodiment, one end of the first conveying pipeline penetrates through the tank body from the top to the inside, and is in pipeline communication with the input end of the water distribution mechanism.

[0012] In one embodiment, the heavy metal wastewater ion exchange treatment device further comprises an intermediate liquid discharge mechanism installed in the tank body and arranged on the top side of the ion exchange module; the output end of the intermediate liquid discharge mechanism extends to the outside of the tank body through the side wall of the tank body.

[0013] In one embodiment, the heavy metal wastewater ion exchange treatment device further comprises an exhaust pipeline, one end of which is communicated to the top of the tank body, and the other end of which extends to the outside of the tank body.

[0014] In one embodiment, the first conveying pipeline is provided with a first sampling pipeline, one end of which is communicated with one end of the first conveying pipeline.

[0015] In one embodiment, the first sampling pipeline is provided with a pressure gauge.

[0016] In one embodiment, the second conveying pipe is provided with a second sampling pipe, one end of which is connected to one end of the second conveying pipe.

[0017] In one embodiment, the second sampling pipe described above is equipped with a pressure gauge.

[0018] In one embodiment, the second conveying pipe is further provided with a water intake tank, which is located at the bottom side of the output end of the first sampling pipe and the output end of the second sampling pipe.

[0019] In one embodiment, the water intake tank is also provided with a drain pipe.

[0020] The aforementioned heavy metal wastewater ion exchange treatment device inputs heavy metal wastewater from the top of the tank through a first conveying pipe. Under gravity, the wastewater passes through the ion exchange module and undergoes an ion exchange process with the ion exchange resin filled within it, thereby removing heavy metal ions from the wastewater. The treated wastewater is discharged through a second conveying pipe at the bottom of the tank, thus completing the removal of metal ions from the heavy metal wastewater. The ion exchange module includes a first filter plate, several partitions, and several ion exchange units. The partitions, combined with the first filter plate, form several receiving cavities. Each ion exchange unit corresponds to one of the receiving cavities, achieving a modular setup. Ion exchange units can be installed into the corresponding receiving cavities according to actual treatment needs. This improves the flexibility of the ion exchange system setup, facilitates disassembly, maintenance, system expansion, and repair, and makes the replacement or regeneration of the ion exchange resin simpler. Maintenance only requires replacing a single ion exchange unit, reducing downtime and significantly improving wastewater treatment efficiency. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the structure of a heavy metal wastewater ion exchange treatment device in one embodiment;

[0022] Figure 2 This is a schematic diagram of the structure of a heavy metal wastewater ion exchange treatment device in one embodiment;

[0023] Figure 3 for Figure 1 A schematic cross-sectional view of part AA in the illustrated embodiment;

[0024] Figure 4 for Figure 1 An enlarged structural schematic diagram of part M in the illustrated embodiment;

[0025] Figure 5 This is a partial structural schematic diagram of a heavy metal wastewater ion exchange treatment device in one embodiment. Detailed Implementation

[0026] To make the above-mentioned objects, features, and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a full understanding of this utility model. However, this utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed below.

[0027] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0028] 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 indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0029] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0030] In the present application, unless otherwise explicitly specified and limited, the first feature is "on" or "under" the second feature can be the first and second features directly contact, or the first and second features indirectly contact through intermediate media. Moreover, the first feature is "on", "above" and "on" the second feature can be the first feature is directly above or obliquely above the second feature, or just indicates that the first feature is higher than the second feature in horizontal height. The first feature is "under", "below" and "under" the second feature can be the first feature is directly below or obliquely below the second feature, or just indicates that the first feature is less than the second feature in horizontal height.

[0031] It should be noted that when an element is referred to as being "fixed" or "set" on another element, it can be directly on the other element or there can be an intervening element. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or there can be an intervening element. The terms "vertical", "horizontal", "upper", "lower", "left", "right", and similar terms as used herein are for purposes of description only and are not intended to be limiting.

[0032] Please refer to Figures 1 to 5The utility model discloses a kind of heavy metal wastewater ion exchange treatment devices, which includes tank body 100, first conveying pipeline 200, second conveying pipeline 300 and ion exchange module 400, first conveying pipeline 200 is connected to the top of tank body 100, second conveying pipeline 300 is connected to the bottom of tank body 100, ion exchange module 400 is installed inside tank body 100, so that sewage to be treated is input to the inside of tank body 100 by first conveying pipeline 200 from the top of tank body 100, wastewater passes through ion exchange module 400 under the action of gravity, and ion exchange process is carried out with ion exchange resin filled therein, to remove heavy metal ions in wastewater;After treatment, wastewater is discharged through second conveying pipeline 300 at the bottom of tank body 100, to complete the removal of metal ions in heavy metal wastewater. Specifically, ion exchange module 400 includes first filter plate 410, a plurality of partitions 420 and a plurality of ion exchange units 430, first filter plate 410 is arranged at the bottom of tank body 100;A plurality of partitions 420 are arranged on the top side surface of first filter plate 410, and a plurality of partitions 420 are arranged in central symmetry with the geometric center of first filter plate 410 as the axis, to form a plurality of accommodation cavities a in combination with first filter plate 410;A plurality of ion exchange units 430 are correspondingly matched with a plurality of accommodation cavities a respectively, and each ion exchange unit 430 can be movably fitted into the inside of corresponding accommodation cavity a, to realize the modularization of ion exchange unit 430, in actual application, ion exchange unit 430 can be installed into corresponding accommodation cavity a according to actual processing demand, to improve the flexibility of ion exchange system, facilitate disassembly and maintenance, system expansion and maintenance, so that ion exchange resin replacement or regeneration is more convenient to operate, and only single ion exchange unit 430 needs to be replaced during maintenance, to reduce downtime, greatly improve wastewater treatment efficiency.

[0033] Further, each ion exchange unit 430 is arranged as a filling frame for filling ion exchange resin, and the outer wall of the filling frame can be connected with the inner wall of the corresponding accommodation cavity a, so that the filling frame can be closely fitted in the accommodation cavity a, thereby avoiding the invalid treatment of wastewater when the wastewater flows through the ion exchange unit 430 and flows into the first filter plate 410 through the gap between the filling frame and the side wall of the accommodation cavity a. Specifically, the top outer wall edge of the filling frame is provided with a sealing piece (not shown), and when the filling frame is embedded into the corresponding accommodation cavity a, the sealing piece is pressed against the inner wall of the accommodation cavity a, thereby improving the sealing performance of the filling frame in the accommodation cavity a. More specifically, the bottom wall of the filling frame is arranged as a second filter plate 431, and when the filling frame is embedded into the corresponding accommodation cavity a, the second filter plate 431 is abutted with the corresponding first filter plate 410, and the plate holes of the second filter plate 431 are in communication with the plate holes of the first filter plate 410, thereby ensuring the fluid permeability between the filling frame and the first filter plate 410.

[0034] Further, the heavy metal wastewater ion exchange treatment device further comprises a water distribution mechanism 500, which is arranged at the top of the tank body 100, and the input end of the water distribution mechanism 500 is connected with the first conveying pipeline 200. Specifically, one end of the first conveying pipeline 200 penetrates through the top of the tank body 100 to the inside of the tank body 100 and is in pipeline communication with the input end of the water distribution mechanism 500. The wastewater is conveyed to the water distribution mechanism 500 through the first conveying pipeline 200, and then the water distribution mechanism 500 uniformly sprays the wastewater to the ion exchange module 400 at the bottom side, thereby improving the uniformity of the wastewater flowing through the ion exchange module 400.

[0035] Further, the heavy metal wastewater ion exchange treatment device further comprises an intermediate liquid discharge mechanism 600, which is installed inside the tank body 100 and arranged at the top side of the ion exchange module 400; the output end of the intermediate liquid discharge mechanism 600 extends to the outside of the tank body 100 through the side wall of the tank body 100, so that the intermediate liquid discharge mechanism 600 can discharge the fluid inside the tank body 100 to the outside of the tank body 100. When the ion exchange module 400 is regenerated by the countercurrent regeneration method, the intermediate liquid discharge mechanism 600 can uniformly discharge the upward flowing regeneration liquid to the outside of the tank body 100, thereby avoiding the disturbance of the ion exchange module 400 caused by the water flow to the upper layer of the tank body 100.

[0036] Further, the heavy metal wastewater ion exchange treatment device further comprises an exhaust pipeline 700, one end of which is communicated to the top of the tank body 100, and the other end of which extends to the outside of the tank body 100, so that the exhaust pipeline 700 can balance the air pressure on both sides of the tank body 100, thereby ensuring the stable flow of wastewater and regeneration liquid in the tank body 100.

[0037] Furthermore, the first conveying pipeline 200 is equipped with a first sampling pipeline 210, one end of which is connected to one end of the first conveying pipeline 200. Fluid input through the first conveying pipeline 200 can be sampled through the first sampling pipeline 210, allowing operators to monitor the pre-treatment state of the wastewater input through the first conveying pipeline 200 in real time. Specifically, the first sampling pipeline 210 is equipped with a pressure gauge to monitor the fluid pressure inside the first sampling pipeline 210 in real time.

[0038] Furthermore, the second conveying pipeline 300 is equipped with a second sampling pipeline 310, one end of which is connected to one end of the second conveying pipeline 300. Fluid input and output through the second conveying pipeline 300 can be sampled through the second sampling pipeline 310, allowing operators to monitor the treated wastewater output from the second conveying pipeline 300 and the pre-treatment state of the regenerated liquid in real time. Specifically, the second sampling pipeline 310 is equipped with a pressure gauge to monitor the fluid pressure inside the second sampling pipeline 310 in real time.

[0039] Furthermore, the second conveying pipe 300 is also equipped with a water collection tank 320, which is located on the bottom side of the output ends of the first sampling pipe 210 and the second sampling pipe 310. This allows samples output from both the first and second sampling pipes 210 to fall into the water collection tank 320 for easy sampling by operators. Specifically, the water collection tank 320 is also equipped with a drain pipe 321 to promptly drain any residual samples from the water collection tank 320, thus keeping the inner wall of the water collection tank 320 clean.

[0040] In summary, the heavy metal wastewater ion exchange treatment device disclosed in this utility model introduces heavy metal wastewater into the tank from the top through a first conveying pipe. Under gravity, the wastewater passes through the ion exchange module and undergoes an ion exchange process with the ion exchange resin filled within it, thereby removing heavy metal ions from the wastewater. The treated wastewater is then discharged through a second conveying pipe at the bottom of the tank, thus completing the removal of metal ions from the heavy metal wastewater. The ion exchange module includes a first filter plate, several partitions, and several ion exchange units. The partitions, combined with the first filter plate, form several receiving cavities. Each ion exchange unit corresponds to one of the receiving cavities, achieving a modular configuration. Ion exchange units can be installed into the corresponding receiving cavities according to actual treatment needs. This improves the flexibility of the ion exchange system setup, facilitates disassembly and maintenance, system expansion, and repair, and makes the replacement or regeneration of the ion exchange resin simpler. Maintenance only requires replacing a single ion exchange unit, reducing downtime and significantly improving wastewater treatment efficiency.

[0041] Any combination of the technical features in the above-described embodiments can be made, and for the sake of brevity, not all possible combinations are described, however, as long as the combination of the technical features does not exist in contradiction, it shall be considered as within the scope of the present disclosure.

[0042] The above-described embodiments only express several implementation manners of the present application, the description is relatively specific and detailed, but it shall not be understood as a limitation on the scope of the present application patent. It should be pointed out that, for ordinary skilled in the art, under the premise of not departing from the concept of the present application, a number of modifications and improvements can be made, which all belong to the protection scope of the present application. Therefore, the protection scope of the present application patent shall be subject to the appended claims.

Claims

1. A heavy metal wastewater ion exchange treatment apparatus, characterized by comprising: The heavy metal wastewater ion exchange treatment device comprises a tank body, a first conveying pipeline, a second conveying pipeline and an ion exchange module, the first conveying pipeline is connected to the top of the tank body, the second conveying pipeline is connected to the bottom of the tank body, and the ion exchange module is installed inside the tank body. The ion exchange module comprises a first filter plate, a plurality of partition plates and a plurality of ion exchange units, the first filter plate is arranged at the bottom of the tank body, the plurality of partition plates are arranged on the top side surface of the first filter plate, and the plurality of partition plates are arranged in central symmetry with the geometric center of the first filter plate as the axis, so as to form a plurality of accommodation cavities in combination with the first filter plate, and the plurality of ion exchange units are correspondingly matched with the plurality of accommodation cavities respectively, and each ion exchange unit can be movably embedded into the corresponding accommodation cavity. Each ion exchange unit is arranged as a filling frame for filling ion exchange resin, and the outer wall of the filling frame can be connected with the inner wall of the corresponding accommodation cavity.

2. The heavy metal wastewater ion exchange treatment apparatus according to claim 1, characterized by The top outer wall edge of the filling frame is provided with a sealing element, when the filling frame is embedded into the corresponding accommodation cavity, the sealing element is pressed against the inner wall of the accommodation cavity.

3. The heavy metal wastewater ion exchange treatment apparatus according to claim 2, characterized by The bottom wall of the filling frame is arranged as a second filter plate, when the filling frame is embedded into the corresponding accommodation cavity, the second filter plate is matched and abutted with the corresponding first filter plate, and the plate hole of the second filter plate is correspondingly communicated with the plate hole of the first filter plate.

4. The heavy metal wastewater ion exchange treatment apparatus according to claim 3, characterized by The heavy metal wastewater ion exchange treatment device further comprises a water distribution mechanism, the water distribution mechanism is arranged at the top of the tank body, and the input end of the water distribution mechanism is connected with the first conveying pipeline.

5. The heavy metal wastewater ion exchange treatment apparatus according to claim 4, characterized by The heavy metal wastewater ion exchange treatment device further comprises an intermediate liquid discharge mechanism, the intermediate liquid discharge mechanism is installed inside the tank body, and the intermediate liquid discharge mechanism is arranged at the top side of the ion exchange module; the output end of the intermediate liquid discharge mechanism extends to the outside of the tank body through the side wall of the tank body.

6. The heavy metal wastewater ion exchange treatment apparatus according to claim 5, wherein The heavy metal wastewater ion exchange treatment device further comprises an exhaust pipeline, one end of the exhaust pipeline is communicated to the top of the tank body, and the other end of the exhaust pipeline extends to the outside of the tank body.

7. The heavy metal wastewater ion exchange treatment apparatus according to claim 6, characterized by The first conveying pipeline is provided with a first sampling pipeline, one end of the first sampling pipeline is communicated with one end of the first conveying pipeline.

8. The heavy metal wastewater ion exchange treatment apparatus according to claim 7, characterized by The second conveying pipeline is provided with a second sampling pipeline, one end of the second sampling pipeline is communicated with one end of the second conveying pipeline.

9. The heavy metal wastewater ion exchange treatment apparatus according to claim 8, characterized by The second conveying pipeline is further provided with a water taking tank, the water taking tank is arranged at the bottom side of the output end of the first sampling pipeline and the output end of the second sampling pipeline.

10. The heavy metal wastewater ion exchange treatment apparatus according to claim 9, wherein ​

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