A device for removing heavy metal ions in wastewater treatment

Abstract

The utility model relates to a kind of heavy metal ion removal devices in wastewater treatment in wastewater treatment field, including processing jar, inlet pipe, dosing tank and drain pipe, the inside of processing jar is provided with multistage collection mechanism, multistage collection mechanism includes connecting shaft and multiple collection nets, multiple collection nets are sequentially equidistant coaxial connection in connecting shaft near the bottom end position of processing jar from top to bottom, the mesh of multiple collection nets sequentially decreases from top to bottom, and the circumferential edge of multiple collection nets is slidably attached with the inner wall of processing jar, when removing heavy metal ion in wastewater using the above structure, multiple mesh collection nets sequentially decreasing from top to bottom are used to realize the fractional collection of heavy metal ion flocculation, and the heavy metal ion flocculation inside processing jar is distributed to multiple collection nets, which can reduce mesh coverage, thereby accelerating the draining speed and improving the processing efficiency.

Description

Technical Field

[0001] This utility model relates to a heavy metal ion removal device for wastewater treatment, and particularly to a heavy metal ion removal device for wastewater treatment applied in the field of wastewater treatment. Background Technology

[0002] Direct discharge of wastewater into the environment will cause water pollution. For example, industrial wastewater contains heavy metal ions such as nickel, copper, and silver. Therefore, wastewater needs to be treated before discharge, including the removal of heavy metal ions.

[0003] Regarding heavy metal ion removal devices in wastewater treatment, a search revealed, for example, a specification of patent publication number CN218521125U, discloses an electroplating wastewater treatment and recovery device. This device includes a treatment tank, a sealing cover, an inlet, and an outlet. A dosing tank is installed at the inlet. Symmetrically arranged upward-sloping baffles are provided on the inner wall of the treatment tank, with a recovery mechanism on the baffles. An aeration pipe is located at the bottom of the treatment tank. Heavy metal flocculants are added through the dosing tank, causing the heavy metals to form flocs, effectively removing heavy metal ions from the electroplating wastewater. Ozone introduced through the aeration pipe effectively oxidizes and removes cyanide from the liquid. The large number of bubbles generated by the aeration pipe carries the flocs to the surface. When the liquid purification is complete, the floating heavy metal flocs can be collected by lifting the recovery mechanism.

[0004] Based on the above search and combined with the existing technology, the existing heavy metal ion removal devices similar to those disclosed above use a single-layer filter to collect heavy metal ion flocs. In order to ensure more thorough collection, the mesh size of the filter is generally small, and the filtration time is relatively long, which reduces the treatment efficiency. Therefore, a heavy metal ion removal device for wastewater treatment is proposed to improve the above problems. Utility Model Content

[0005] In view of the above-mentioned prior art, the technical problem to be solved by this utility model is that in order to ensure more thorough collection, the mesh of a single-layer filter is generally small, the filtration time is relatively long, and the processing efficiency is reduced.

[0006] To solve the above problems, this utility model provides a heavy metal ion removal device for wastewater treatment, including a treatment tank, an inlet pipe and a dosing tank fixedly connected to the top side of the treatment tank, and a drain pipe fixedly connected to the bottom of the treatment tank. The upper end of the treatment tank is set as an open opening, and a sealing cover is detachably connected to the open opening.

[0007] The inside of the treatment tank is equipped with a multi-stage collection mechanism, which includes a connecting shaft and multiple collection nets. The multiple collection nets are coaxially and equidistantly connected to the connecting shaft near the bottom of the treatment tank from top to bottom. The mesh size of the multiple collection nets decreases from top to bottom, and the circumferential edges of the multiple collection nets are slidably fitted against the inner wall of the treatment tank.

[0008] In the above-mentioned wastewater treatment heavy metal ion removal device, multiple collection nets with progressively smaller mesh sizes from top to bottom are used to achieve graded collection of heavy metal ion flocs. The heavy metal ion flocs inside the treatment tank are distributed to multiple collection nets, which can reduce the mesh coverage rate, thereby accelerating the drainage speed and improving the treatment efficiency.

[0009] As a further improvement of this application, the connecting shaft is located on the upper part of multiple collection nets and multiple stirring rods are fixed at equal intervals from top to bottom;

[0010] The water inlet pipe passes through the bottom of the treatment tank. A transmission component is connected between the bottom end of the connecting shaft and the water inlet pipe. When the water inlet pipe is in the water inlet state, the water flow inside the water inlet pipe causes the transmission component to rotate with the connecting shaft. This, in turn, uses multiple stirring rods to rotate and stir the medicine mixture in the treatment tank, making the medicine mixture more uniform.

[0011] As a further improvement to this application, the transmission assembly includes a water turbine, a rotating shaft, and a limiting structure;

[0012] An expansion chamber is fixedly connected to the side end of the inlet pipe. The water turbine is vertically rotated and installed inside the expansion chamber, and the blades of the water turbine extend to the inside of the inlet pipe.

[0013] The rotating shaft is installed at the bottom of the treatment tank in a sealed manner. The lower end of the rotating shaft is fixed coaxially with the water wheel, and the upper end of the rotating shaft is detachably connected to the connecting shaft through a limiting structure. The water flow impacts the water wheel, causing the connecting shaft to rotate. This, in turn, uses multiple stirring rods to stir the chemical mixture in the treatment tank. The detachable connection method facilitates the disassembly and assembly of the multi-stage collection mechanism, making it easy to clean the heavy metal ion flocs collected by the multi-stage collection mechanism.

[0014] As a further improvement of this application, the limiting structure includes a limiting block coaxially fixed to the upper end of the rotating shaft and a limiting groove disposed at the bottom end of the connecting shaft, wherein the limiting block and the limiting groove are inserted into each other.

[0015] As a further improvement of this application, the collection net is rotatably mounted on the connecting shaft, and a cleaning brush that contacts the collection net is horizontally fixed at the side end of the connecting shaft; when cleaning the heavy metal ion flocs on the collection net later, the collection net can be manually moved, and the cleaning brush can be used to quickly push the heavy metal ion flocs on the collection net together for convenient centralized cleaning.

[0016] As a further improvement of this application, the dosing tank is fixedly connected to the inlet pipe via a dosing pipe, and the flocculant is added directly from the inlet pipe, which allows for more thorough mixing of the chemicals and water. A detector is installed on the inlet pipe to detect the flow rate and heavy metal ion content of the sewage flowing through the inlet pipe, thereby using an external controller to precisely control the amount of flocculant added through the dosing pipe, resulting in better treatment effect.

[0017] In summary, through the coordinated arrangement of the collection net, water wheel, stirring rods, and cleaning brush, as wastewater enters the treatment tank through the inlet pipe, the impact of the wastewater flow on the water wheel causes the connecting shaft to rotate. This, in turn, utilizes the rotation of multiple stirring rods to agitate the chemical mixture in the treatment tank, resulting in a more uniform mixture. The collection net, with its progressively smaller mesh size from top to bottom, enables the graded collection of heavy metal ion flocs. Distributing the heavy metal ion flocs inside the treatment tank across multiple collection nets reduces the mesh coverage, thereby accelerating drainage and improving treatment efficiency. Furthermore, when cleaning the heavy metal ion flocs on the collection nets later, the nets can be manually moved, and the cleaning brushes can quickly push the flocs together for convenient centralized cleaning. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of the first embodiment of this application;

[0019] Figure 2 This is a partial cross-sectional structural diagram of the first embodiment of this application;

[0020] Figure 3 This is a schematic diagram of the structure of the multi-stage collection mechanism according to the first embodiment of this application;

[0021] Figure 4 This is a schematic diagram of the structure of the water inlet pipe and the expansion chamber in the first embodiment of this application.

[0022] Explanation of the labels in the diagram:

[0023] 1. Treatment tank, 2. Sealing cover, 3. Water inlet pipe, 4. Drain pipe, 5. Dosing tank, 6. Dosing pipe, 7. Connecting shaft, 701. Limiting groove, 8. Stirring rod, 9. Water wheel, 10. Rotating shaft, 11. Collection net, 12. Cleaning brush, 13. Limiting block, 14. Detector, 15. Expansion chamber. Detailed Implementation

[0024] The following describes one embodiment of this application in detail with reference to the accompanying drawings.

[0025] The first implementation method: such as Figure 1-4 The diagram shows a heavy metal ion removal device for wastewater treatment, comprising a treatment tank 1, an inlet pipe 3 and a dosing tank 5 fixedly connected to the top side of the treatment tank 1, and a drain pipe 4 fixedly connected to the bottom of the treatment tank 1. The dosing tank 5 contains a conventional flocculant that causes heavy metal ions to form flocs. The upper end of the treatment tank 1 is set as an open opening, and a sealing cover 2 is detachably connected to the open opening.

[0026] The treatment tank 1 is equipped with a multi-stage collection mechanism on its inner side. The multi-stage collection mechanism includes a connecting shaft 7 and multiple collection nets 11. It should be noted that the mesh size of the collection nets 11 is not shown in the figure. The multiple collection nets 11 are coaxially connected to the connecting shaft 7 near the bottom of the treatment tank 1 at equal intervals from top to bottom. The mesh size of the multiple collection nets 11 decreases from top to bottom, and the circumferential edges of the multiple collection nets 11 are all slidably fitted to the inner wall of the treatment tank 1.

[0027] In this wastewater treatment, the heavy metal ion removal device utilizes multiple collection nets 11 with progressively smaller mesh sizes from top to bottom to achieve graded collection of heavy metal ion flocs. The heavy metal ion flocs inside the treatment tank 1 are distributed across multiple collection nets 11, which reduces the mesh coverage, thereby accelerating the drainage speed and improving the treatment efficiency.

[0028] Among them, such as Figure 2 and Figure 3 As shown, the connecting shaft 7 is located on the upper part of multiple collection nets 11, and multiple stirring rods 8 are fixed at equal intervals from top to bottom. The water inlet pipe 3 passes through the lower side of the treatment tank 1. A transmission assembly is connected between the bottom end of the connecting shaft 7 and the water inlet pipe 3. Specifically, the transmission assembly includes a water wheel 9, a rotating shaft 10, and a limiting structure. The side end of the water inlet pipe 3 is fixedly connected to an expansion chamber 15. The water wheel 9 is vertically rotatably installed inside the expansion chamber 15, and the blades of the water wheel 9 extend to the inside of the water inlet pipe 3. The rotating shaft 10 passes through and is rotatably installed at the bottom end of the treatment tank 1. The lower end of the rotating shaft 10 is coaxially fixed with the water wheel 9, and the upper end of the rotating shaft 10 is detachably connected to the connecting shaft 7 through the limiting structure.

[0029] Based on the coordinated arrangement of the stirring rod 8, water wheel 9, rotating shaft 10 and limiting structure, the water inlet pipe 3 is in the water inlet state. The sewage water flow impacts the water wheel 9 to make the connecting shaft 7 rotate, thereby using the rotation of multiple stirring rods 8 to stir the medicine mixture in the treatment tank 1, making the medicine mixture more uniform.

[0030] Among them, such as Figure 3 and Figure 4 As shown, the limiting structure includes a limiting block 13 coaxially fixed to the upper end of the rotating shaft 10 and a limiting groove 701 provided at the bottom end of the connecting shaft 7. The limiting block 13 and the limiting groove 701 are inserted into each other. The above-mentioned detachable connection method of insertion and engagement facilitates the disassembly and assembly of the multi-stage collection mechanism, thereby facilitating the cleaning of heavy metal ion flocs collected by the multi-stage collection mechanism.

[0031] The collection net 11 is rotatably mounted on the connecting shaft 7, and a cleaning brush 12 that contacts the collection net 11 is horizontally fixed at the side end of the connecting shaft 7. When cleaning the heavy metal ion flocs on the collection net 11 later, the collection net 11 can be manually moved, and the cleaning brush 12 can be used to quickly push the heavy metal ion flocs on the collection net 11 together for easy centralized cleaning.

[0032] In addition, the dosing tank 5 is fixedly connected to the inlet pipe 3 via the dosing pipe 6, and the dosing tank 5 is equipped with a conventional pump body, which is connected to the inlet pipe 3 and is used to add flocculant to the treatment tank 1. The flocculant is added directly from the inlet pipe 3, which can make the chemical and water mix more thoroughly.

[0033] To precisely control the amount of flocculant added, a detector 14 is installed on the side of the inlet pipe 3 away from the connection between the dosing pipe 6 and the treatment tank 1. The detector 14 uses conventional wastewater detection equipment in the prior art, such as conventional flow meters and heavy metal ion analyzers. The detector 14 is used to detect the flow rate and heavy metal ion content of the wastewater flowing through the inlet pipe 3, thereby using an external controller to precisely control the amount of flocculant added to the dosing pipe 6, resulting in better treatment effect.

[0034] Working principle: As sewage enters treatment tank 1 through inlet pipe 3, the sewage flow impacts water wheel 9, causing connecting shaft 7 to rotate. This, in turn, uses multiple stirring rods 8 to stir the chemical mixture in treatment tank 1, making the chemical mixture more uniform. Detector 14 detects the flow rate and heavy metal ion content of the sewage flowing through inlet pipe 3, thereby using an external controller to precisely control the amount of flocculant added through dosing pipe 6.

[0035] After the wastewater is added, it is left to stand for a period of time to allow the flocculant to form flocs from the heavy metal ions in the wastewater.

[0036] Open the end cover 2, hold the connecting shaft 7 and pull the collection net 11 upward. The collection net 11 with multiple meshes decreasing in size from top to bottom can be used to collect heavy metal ion flocs in stages. The heavy metal ion flocs inside the treatment tank 1 can be distributed to multiple collection nets 11 to reduce the mesh coverage, thereby speeding up the drainage and improving the treatment efficiency.

[0037] When cleaning the heavy metal ion flocs on the collection net 11 later, the collection net 11 can be manually moved, and the cleaning brush 12 can be used to quickly push the heavy metal ion flocs on the collection net 11 together for easy centralized cleaning.

[0038] In light of current practical needs, the above-described embodiments adopted in this application are not limited to these. Any changes made within the scope of knowledge possessed by those skilled in the art without departing from the concept of this application still fall within the protection scope of this utility model.

Claims

1. A heavy metal ion removal device for wastewater treatment, comprising a treatment tank (1), an inlet pipe (3) fixedly connected to the top side of the treatment tank (1), a dosing tank (5), and a drain pipe (4) fixedly connected to the bottom of the treatment tank (1), characterized in that: The upper end of the processing tank (1) is set as an open opening, and a sealing cap (2) is detachably connected to the open opening; The processing tank (1) is provided with a multi-stage collection mechanism on its inner side. The multi-stage collection mechanism includes a connecting shaft (7) and multiple collection nets (11). The multiple collection nets (11) are coaxially connected at equal intervals from top to bottom to the connecting shaft (7) near the bottom of the processing tank (1). The mesh size of the multiple collection nets (11) decreases from top to bottom, and the circumferential edges of the multiple collection nets (11) are slidably fitted to the inner wall of the processing tank (1).

2. The heavy metal ion removal device for wastewater treatment according to claim 1, characterized in that: The connecting shaft (7) is located on the upper part of multiple collection nets (11), and multiple stirring rods (8) are fixed at equal intervals from top to bottom; The water inlet pipe (3) passes under the treatment tank (1). A transmission component is connected between the bottom end of the connecting shaft (7) and the water inlet pipe (3). When the water inlet pipe (3) is in the water inlet state, the water flow inside the water inlet pipe (3) causes the transmission component to rotate with the connecting shaft (7).

3. The heavy metal ion removal device for wastewater treatment according to claim 2, characterized in that: The transmission assembly includes a water turbine (9), a rotating shaft (10), and a limiting structure; The side end of the water inlet pipe (3) is fixedly connected to the expansion chamber (15), and the water wheel (9) is vertically rotatably installed inside the expansion chamber (15), and the blades of the water wheel (9) extend to the inside of the water inlet pipe (3). The rotating shaft (10) is installed through and sealed at the bottom of the treatment tank (1). The lower end of the rotating shaft (10) is fixed coaxially with the water wheel (9). The upper end of the rotating shaft (10) is detachably connected to the connecting shaft (7) through a limiting structure.

4. The heavy metal ion removal device for wastewater treatment according to claim 3, characterized in that: The limiting structure includes a limiting block (13) coaxially fixed to the upper end of the rotating shaft (10) and a limiting groove (701) provided at the bottom end of the connecting shaft (7), wherein the limiting block (13) and the limiting groove (701) are inserted into each other.

5. The heavy metal ion removal device for wastewater treatment according to claim 1, characterized in that: The collection net (11) is rotatably mounted on the connecting shaft (7), and a cleaning brush (12) that contacts the collection net (11) is horizontally fixed at the side end of the connecting shaft (7).

6. The heavy metal ion removal device for wastewater treatment according to claim 1, characterized in that: The dosing tank (5) is fixedly connected to the water inlet pipe (3) via the dosing pipe (6), and a detector (14) is installed on the water inlet pipe (3).

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