Heavy metal impurity removal device for iron phosphate wastewater

Abstract

The utility model relates to an iron phosphate wastewater heavy metal impurity removal device, which belongs to the field of iron phosphate battery production equipment and is characterized in that a hydrogen peroxide storage tank of the iron phosphate wastewater heavy metal impurity removal device passes through a first communicating pipe. The second communicating pipe is communicated with a first reaction tank and a second reaction tank, and the two reaction tanks simultaneously treat wastewater, so that the reaction efficiency can be improved; a hydrogen peroxide outlet pipe is arranged on the side face of the hydrogen peroxide storage tank, the side face of the hydrogen peroxide outlet pipe communicates with a first communicating pipe, the hydrogen peroxide outlet pipe communicates with a lifting pipe, the lifting pipe communicates with a backflow pipe and a second communicating pipe, and multiple sets of hydrogen peroxide pumps are arranged on the first communicating pipe, the second communicating pipe and the backflow pipe and can increase the flow of hydrogen peroxide; the flow meter and the regulating valve are arranged on the pipe body, so that pressure relief is facilitated.

Description

Technical Field

[0001] This utility model belongs to the field of iron phosphate battery production equipment. Specifically, this utility model relates to a heavy metal removal device for iron phosphate wastewater. Background Technology

[0002] LiFePO4 batteries, as an important energy storage device, generate wastewater containing harmful substances such as organic matter, heavy metals, and dissolved salts during their production, posing potential environmental pollution and safety risks. Therefore, developing efficient wastewater treatment processes is crucial for the sustainable development of the LiFePO4 battery industry. Currently, chemical precipitation is a widely used method for treating wastewater containing heavy metal ions. This method involves adding appropriate chemical reagents to react with the heavy metal ions in the wastewater, forming precipitates, which are then removed through precipitation separation. Commonly used precipitants include calcium hydroxide and ferric chloride. Chemical precipitation effectively removes heavy metal ions from wastewater, reducing potential environmental harm. However, current technologies often use a set of chemical reagent tanks corresponding to one set of reaction tanks. This setup is inefficient; using one set of chemical reagent tanks with two sets of reaction tanks often results in insufficient chemical reagent flow to meet production demands. Increasing the flow rate may cause excessive internal pressure, posing safety hazards. Summary of the Invention

[0003] To overcome the problems existing in the background technology, this utility model discloses a heavy metal removal device for ferric phosphate wastewater. The hydrogen peroxide storage tank of the ferric phosphate wastewater heavy metal removal device is connected to a first connecting pipe. A second connecting pipe connects to a first reaction tank and a second reaction tank, allowing the two reaction tanks to treat wastewater simultaneously, which can increase the reaction efficiency. A hydrogen peroxide outlet pipe is provided on the side of the hydrogen peroxide storage tank, which is connected to the first connecting pipe. The hydrogen peroxide outlet pipe is connected to a riser pipe, which is connected to a return pipe and a second connecting pipe. Multiple sets of hydrogen peroxide pumps are installed on the first connecting pipe, the second connecting pipe, and the return pipe. The multiple sets of hydrogen peroxide pumps can increase the flow rate of hydrogen peroxide to meet the hydrogen peroxide usage flow rate of the first and second reaction tanks. Flow meters and regulating valves are installed on the pipe body for convenient pressure relief.

[0004] To achieve the above objectives, this utility model is implemented through the following technical solution:

[0005] The heavy metal removal device for ferric phosphate wastewater is characterized by comprising a hydrogen peroxide storage tank, a hydrogen peroxide outlet pipe, a booster pump, a first connecting pipe, a first reaction tank, a booster pipe, a return pipe, a second connecting pipe, and a second reaction tank; the hydrogen peroxide outlet pipe is located on the side of the hydrogen peroxide tank, the first connecting pipe is connected to the hydrogen peroxide outlet pipe, the booster pump is located between the hydrogen peroxide outlet pipe and the first connecting pipe, the first reaction tank is connected to the first connecting pipe, the return pipe is connected to the second connecting pipe, one end of the return pipe is connected to the booster pipe, and the other end is connected to the hydrogen peroxide storage tank; the return pipe, the second connecting pipe, and the booster pipe are tee pipes, and the second connecting pipe is connected to the second reaction tank; the first reaction tank and the second reaction tank have the same structure.

[0006] Preferably, the system includes a hydrogen peroxide inlet pipe and a level gauge; the hydrogen peroxide inlet pipe and level gauge are located on the top surface of the hydrogen peroxide storage tank, and the level gauge is located inside the hydrogen peroxide storage tank.

[0007] Preferably, the system includes a drain pipe, which is located on the bottom surface of the hydrogen peroxide storage tank.

[0008] As a preferred embodiment, the system includes a flow meter and a hydrogen peroxide pump; the first connecting pipe, the second connecting pipe, and the return pipe are equipped with a hydrogen peroxide pump and a flow meter, and regulating valves are provided on both sides of the hydrogen peroxide pump.

[0009] Preferably, the second connecting pipe is equipped with at least two sets of hydrogen peroxide pumps and two sets of flow meters.

[0010] Preferably, the hydrogen peroxide outlet pipe is equipped with a flow meter and a regulating valve.

[0011] As a preferred embodiment, the system includes: a wastewater inlet pipe, an ammonia inlet pipe, and a recovery water pipe; the wastewater inlet pipe and the ammonia inlet pipe are respectively located on the left and right sides of the first reaction tank, and the recovery water pipe is located on the right side of the first reaction tank.

[0012] As a preferred embodiment, the system includes: a slag discharge pipe, a mixer, and an inner partition screen; the slag discharge pipe is located at the bottom of the first reaction tank, the mixer is located inside the first reaction tank, and the inner partition screen is located inside the first reaction tank.

[0013] The beneficial effects of this utility model are as follows: The hydrogen peroxide storage tank of the heavy metal removal device for ferric phosphate wastewater is connected to a first connecting pipe. A second connecting pipe connects to a first reaction tank and a second reaction tank, allowing both reaction tanks to treat wastewater simultaneously, thus increasing reaction efficiency. A hydrogen peroxide outlet pipe is provided on the side of the hydrogen peroxide storage tank, which is connected to the first connecting pipe. The hydrogen peroxide outlet pipe is connected to a riser pipe, which is connected to a return pipe and a second connecting pipe. Multiple sets of hydrogen peroxide pumps are installed on the first connecting pipe, the second connecting pipe, and the return pipe. The multiple sets of hydrogen peroxide pumps can increase the flow rate of hydrogen peroxide to meet the hydrogen peroxide usage of the first and second reaction tanks. Flow meters and regulating valves are installed on the pipe bodies for convenient pressure relief. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of this utility model;

[0015] Figure 2 This is a schematic diagram of the internal structure of the first reaction tank.

[0016] In the diagram, the components are: hydrogen peroxide storage tank 1, support leg 2, caster wheel 3, hydrogen peroxide outlet pipe 4, lift pump 5, first connecting pipe 6, first reaction tank 7, lift pipe 8, return pipe 9, second connecting pipe 10, second reaction tank 11, hydrogen peroxide inlet pipe 12, level gauge 13, leakage pipe 14, flow meter 15, hydrogen peroxide pump 16, sewage inlet pipe 17, ammonia inlet pipe 18, slag outlet pipe 19, mixer 20, recovery water pipe 21, and inner partition mesh 22. Detailed Implementation

[0017] To make the above objectives, technical solutions and beneficial effects clearer and more explicit, the present invention will be described in detail below with reference to the accompanying drawings.

[0018] like Figure 1-2 As shown, the heavy metal removal device for iron phosphate wastewater includes a hydrogen peroxide storage tank 1, a hydrogen peroxide outlet pipe 4, a booster pump 5, a first connecting pipe 6, a first reaction tank 7, a booster pipe 8, a return pipe 9, a second connecting pipe 10, and a second reaction tank 11.

[0019] The hydrogen peroxide outlet pipe 4 is located on the side of the hydrogen peroxide tank. The first connecting pipe 6 is connected to the hydrogen peroxide outlet pipe 4. The lift pump 5 is located between the hydrogen peroxide outlet pipe 4 and the first connecting pipe 6. The first reaction tank 7 is connected to the first connecting pipe 6. The return pipe 9 is connected to the second connecting pipe 10. One end of the return pipe 9 is connected to the lift pipe 8, and the other end is connected to the hydrogen peroxide storage tank 1. The return pipe 9, the second connecting pipe 10, and the lift pipe 8 are a three-way pipe. The second connecting pipe 10 is connected to the second reaction tank 11.

[0020] The hydrogen peroxide storage tank 1 is provided with a hydrogen peroxide inlet pipe 12 on the top surface, a liquid level gauge 13 is provided inside the hydrogen peroxide storage tank 1, a leakage pipe 14 is provided at the bottom of the hydrogen peroxide storage tank 1, and a return pipe 9 extends from the top surface of the hydrogen peroxide storage tank 1 into the interior of the hydrogen peroxide storage tank 1.

[0021] The hydrogen peroxide outlet pipe 4 is equipped with a regulating valve and a flow meter 15 to control the hydrogen peroxide outlet flow rate. A large hydrogen peroxide outlet flow rate is diverted from the riser pipe 8. A riser pump 5 is installed between the hydrogen peroxide outlet pipe 4 and the riser pipe 8. The hydrogen peroxide outlet pipe 4 is connected to a first connecting pipe 6, which is equipped with a hydrogen peroxide pump 16, a regulating valve, and a flow meter 15 to control the inlet flow rate in real time. The hydrogen peroxide outlet pipe 4 and the first connecting pipe 6 form a hydrogen peroxide passage, allowing hydrogen peroxide to flow into the first reaction tank 7. The hydrogen peroxide diverted at the riser pipe 8 flows back through the return pipe 9, which also serves to depressurize the pipeline. A second connecting pipe 10 is also connected to one side of the return pipe 9. Two sets of hydrogen peroxide pumps 16 and a flow meter 15 are installed on the second connecting pipe 10 to control the hydrogen peroxide flow rate in real time. The hydrogen peroxide flows into the second reaction tank 11 through the second connecting pipe 10.

[0022] Wastewater inlet pipe 17 and ammonia inlet pipe 18 are provided on the left and right sides of the first reaction tank 7. A stirrer 20 is provided inside the first reaction tank 7. A slag outlet pipe 19 is provided on the bottom surface of the first reaction tank 7. An inner partition net 22 is provided inside the first reaction tank 7. A recovery water pipe 21 is provided on the side of the first reaction tank 7. The first reaction tank 7 has the same structure as the second reaction tank 11. Ammonia water is introduced into the ammonia inlet pipe 18 to treat the wastewater from the production of iron phosphate.

[0023] When using the aforementioned heavy metal removal device for ferric phosphate wastewater, the ferric phosphate production wastewater is introduced into the first reaction tank 7 and the second reaction tank 11. Ammonia water is introduced through the ammonia water inlet pipe 18 on the side of the first reaction tank 7 and the second reaction tank 11. The pH of the wastewater is adjusted to 6.5-7.0 by adding ammonia water. Then, hydrogen peroxide is added through the first connecting pipe 6 and the second connecting pipe 10 for reaction. Finally, ammonia water is added through the ammonia water pipe to adjust the pH to 9.0. The removal rate of manganese ions in the wastewater reaches 79%. The heavy metal ions in the wastewater react with hydrogen peroxide to form hydroxide precipitates. The inner partition screen 22 of the first reaction tank 7 and the second reaction tank 11... After the sediment is blocked, it is recovered from the slag outlet pipe 19, and the treated water is recovered from the recovery water pipe 21. Wastewater can be treated simultaneously in the first reaction tank 7 and the second reaction tank 11, which can improve the wastewater treatment efficiency. The first reaction tank 7 and the second reaction tank 11 are equipped with a stirrer 20 to stir the reaction and improve the reaction efficiency. Multiple sets of hydrogen peroxide pumps 16 are installed on the first connecting pipe 6, the second connecting pipe 10 and the return pipe 9. The installation of multiple sets of hydrogen peroxide pumps 16 can increase the flow rate of hydrogen peroxide to meet the hydrogen peroxide usage flow rate of the first reaction tank 7 and the second reaction tank 11. Flow meters 15 and regulating valves are installed on the pipe body for easy pressure relief.

[0024] Finally, it should be noted that the above preferred embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although the utility model has been described in detail through the above preferred embodiments, those skilled in the art should understand that various changes can be made to it in form and detail without departing from the scope defined by the claims of this utility model.

Claims

1. A device for removing heavy metals from iron phosphate wastewater, characterized in that, The application relates to a hydrogen peroxide production device, which comprises a hydrogen peroxide storage tank, a hydrogen peroxide outlet pipe, a lifting pump, a first connecting pipe, a first reaction pool, a lifting pipe, a backflow pipe, a second connecting pipe, a second reaction pool, and a hydrogen peroxide inlet pipe. The hydrogen peroxide outlet pipe is arranged on the side of the hydrogen peroxide tank, the first connecting pipe is connected with the hydrogen peroxide outlet pipe, the lifting pump is arranged between the hydrogen peroxide outlet pipe and the first connecting pipe, the first reaction pool is communicated with the first connecting pipe, the backflow pipe is communicated with the second connecting pipe, one end of the backflow pipe is communicated with the lifting pipe, and the other end of the backflow pipe is communicated with the hydrogen peroxide storage tank; the backflow pipe, the second connecting pipe and the lifting pipe are three-way pipes, the second connecting pipe is communicated with the second reaction pool; and the first reaction pool and the second reaction pool have the same structure.

2. The iron phosphate wastewater heavy metal impurity removal device according to claim 1, characterized in that: The application relates to a hydrogen peroxide production device, which comprises a hydrogen peroxide storage tank, a hydrogen peroxide outlet pipe, a lifting pump, a first connecting pipe, a first reaction pool, a lifting pipe, a backflow pipe, a second connecting pipe, a second reaction pool, and a hydrogen peroxide inlet pipe. The application relates to a hydrogen peroxide production device, which comprises a hydrogen peroxide storage tank, a hydrogen peroxide outlet pipe, a lifting pump, a first connecting pipe, a first reaction pool, a lifting pipe, a backflow pipe, a second connecting pipe, a second reaction pool, and a hydrogen peroxide inlet pipe.

3. The device for removing heavy metals from iron phosphate wastewater according to claim 1, characterized in that: The application relates to a hydrogen peroxide production device, which comprises a hydrogen peroxide storage tank, a hydrogen peroxide outlet pipe, a lifting pump, a first connecting pipe, a first reaction pool, a lifting pipe, a backflow pipe, a second connecting pipe, a second reaction pool, and a hydrogen peroxide inlet pipe. The application relates to a hydrogen peroxide production device, which comprises a hydrogen peroxide storage tank, a hydrogen peroxide outlet pipe, a lifting pump, a first connecting pipe, a first reaction pool, a lifting pipe, a backflow pipe, a second connecting pipe, a second reaction pool, and a hydrogen peroxide inlet pipe.

4. The iron phosphate wastewater heavy metal impurity removal device according to claim 1, characterized in that: The application relates to a hydrogen peroxide production device, which comprises a hydrogen peroxide storage tank, a hydrogen peroxide outlet pipe, a lifting pump, a first connecting pipe, a first reaction pool, a lifting pipe, a backflow pipe, a second connecting pipe, a second reaction pool, and a hydrogen peroxide inlet pipe. The application relates to a hydrogen peroxide production device, which comprises a hydrogen peroxide storage tank, a hydrogen peroxide outlet pipe, a lifting pump, a first connecting pipe, a first reaction pool, a lifting pipe, a backflow pipe, a second connecting pipe, a second reaction pool, and a hydrogen peroxide inlet pipe.

5. The iron phosphate wastewater heavy metal impurity removal device according to claim 4, characterized in that: The application relates to a hydrogen peroxide production device, which comprises a hydrogen peroxide storage tank, a hydrogen peroxide outlet pipe, a lifting pump, a first connecting pipe, a first reaction pool, a lifting pipe, a backflow pipe, a second connecting pipe, a second reaction pool, and a hydrogen peroxide inlet pipe.

6. The iron phosphate wastewater heavy metal impurity removal device according to claim 1, characterized in that: The application relates to a hydrogen peroxide production device, which comprises a hydrogen peroxide storage tank, a hydrogen peroxide outlet pipe, a lifting pump, a first connecting pipe, a first reaction pool, a lifting pipe, a backflow pipe, a second connecting pipe, a second reaction pool, and a hydrogen peroxide inlet pipe.

7. The iron phosphate wastewater heavy metal impurity removal device according to claim 1, characterized in that: The application relates to a hydrogen peroxide production device, which comprises a hydrogen peroxide storage tank, a hydrogen peroxide outlet pipe, a lifting pump, a first connecting pipe, a first reaction pool, a lifting pipe, a backflow pipe, a second connecting pipe, a second reaction pool, and a hydrogen peroxide inlet pipe. The application relates to a hydrogen peroxide production device, which comprises a hydrogen peroxide storage tank, a hydrogen peroxide outlet pipe, a lifting pump, a first connecting pipe, a first reaction pool, a lifting pipe, a backflow pipe, 8. The iron phosphate wastewater heavy metal impurity removal device according to claim 1, characterized in that: ​ ​

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