Multi-treatment device for lithium ion battery wastewater

Abstract

The utility model discloses a multi-treatment device for lithium ion battery wastewater, which comprises a coagulation and aeration integrated system and a multi-filtration system, the coagulation and aeration integrated system comprises a stirring device for performing coagulation treatment on the lithium ion battery wastewater and an aeration device for performing aeration treatment on the coagulated wastewater subjected to coagulation treatment; the multi-filtration system comprises a physical adsorption device and a physical separation and readsorption device; the coagulation and aeration integrated system is communicated with the multi-filtration system through a pipeline. According to the device disclosed by the utility model, coagulation treatment and aeration treatment are combined, and the action among organic matters, microorganisms and dissolved oxygen in the lithium ion battery wastewater is enhanced through aeration after the lithium ion battery wastewater is subjected to coagulation treatment, so that the organic matters in the wastewater are promoted to be oxidized and decomposed; and the filtration quality and the separation effect of the lithium ion wastewater are improved by utilizing double filtration of adsorption type filtration and split type separation filtration.

Description

Technical Field

[0001] The utility model belongs to the field of wastewater treatment, and specifically relates to a multiple treatment device for lithium ion battery wastewater. Background Art

[0002] In recent years, lithium-ion batteries have developed rapidly and have been widely used in electric vehicles, energy storage, and various types of electric tools. The industrial scale of new energy vehicles and energy storage will continue to grow exponentially in the next few years, which will greatly stimulate the production demand of lithium-ion batteries. In the production process of lithium batteries, due to the complex composition of raw materials, poor biodegradability, and certain toxicity, there is a large amount of difficult-to-treat wastewater. Wastewater needs to be recycled, so more comprehensive process equipment is needed for wastewater filtration.

[0003] However, the overall operating performance of most of the existing lithium battery wastewater treatment equipment is relatively simple. During the filtration period, only a single process is followed to perform the filtration treatment operation, and the existing technology requires a single stirring and neutralization to ensure the subsequent filtration quality. However, the single stirring is difficult to fully dissolve the microorganisms in the wastewater, and during filtration, it is often easy for the wastewater to accumulate and adsorb on the filter aperture due to some filtration layers, which reduces the subsequent filtration quality and requires manual cleaning. Summary of the invention

[0004] Purpose of the invention: The utility model aims to provide a multiple treatment device for lithium-ion battery wastewater that can achieve efficient purification of wastewater.

[0005] Technical solution: The multiple treatment device for lithium-ion battery wastewater described in the utility model includes a coagulation-aeration integrated system and a multiple filtration system. The coagulation-aeration integrated system includes a stirring device for coagulating lithium-ion battery wastewater and an aeration device for aerating the coagulated wastewater after coagulation treatment. The multiple filtration system includes a physical adsorption device and a physical separation and re-adsorption device; the coagulation-aeration integrated system and the multiple filtration system are connected by a pipeline.

[0006] Furthermore, the coagulation and aeration integrated system includes a cylinder, a stirring device, an aeration device and a lithium-ion battery wastewater inlet installed on the top of the cylinder; the stirring device includes a motor installed on the outside of the cylinder, a stirring rod connected to the motor and arranged inside the cylinder, and a plurality of stirring blades arranged on the stirring rod, and a detachable isolation grid is installed between adjacent stirring blades; the aeration device includes an aeration nozzle, an aeration pipe and an aeration fan, the aeration nozzle is installed at the inner bottom end of the cylinder, one end of the aeration pipe is connected to the aeration nozzle, and the other end is connected to the aeration fan arranged outside the cylinder.

[0007] Furthermore, a drain port is provided at the bottom of the cylinder for discharging waste water when a failure occurs in the device.

[0008] Furthermore, a detachable isolation grid is installed between adjacent stirring blades to isolate solid debris in the lithium-ion battery wastewater.

[0009] Furthermore, the multiple filtration system includes a shell, a physical adsorption device and a physical separation and re-adsorption device arranged in the shell, wherein the physical adsorption device is provided with a plurality of filter units, each filter unit is provided with a detachable adsorption filter device, a water inlet pipe is provided on the top of the adsorption filter device, and each filter unit is separated by a partition; the physical separation and re-adsorption device is provided with a detachable split separation filter cartridge suspended in the physical separation and re-adsorption device through a supporting structure, a water outlet is provided at the bottom of the physical separation and re-adsorption device, the physical adsorption device and the physical separation and re-adsorption device are connected by a water pipe, and a movable cover is provided on the top of the shell.

[0010] Furthermore, the split-type separation filter cartridge includes a docking plate arranged at the top, a plurality of docking ports arranged on the docking plate, and a detachable filter element connected to the docking ports.

[0011] Furthermore, the adsorption filter device is an adsorption filter net with built-in adsorption material, and the adsorption material is activated carbon.

[0012] Furthermore, the pipeline is connected to the water inlet pipe of the first filter unit in the physical adsorption device.

[0013] Furthermore, the docking plate and the detachable filter element are both made of stainless steel.

[0014] Furthermore, a valve is provided on the pipeline.

[0015] Furthermore, the coagulation-aeration integrated system and the multiple filtration system are installed on a fixed base.

[0016] Beneficial effects: Compared with the prior art, the utility model has the following advantages: the utility model first combines coagulation treatment and aeration treatment, and after the lithium-ion battery wastewater is coagulated, aeration is used to strengthen the interaction between organic matter, microorganisms and dissolved oxygen in the lithium-ion battery wastewater, thereby promoting the oxidation and decomposition of organic matter in the wastewater, and then the dual filtration of adsorption filtration and split separation filtration is used to improve the filtration quality and separation effect of the lithium-ion wastewater. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the structure of a multiple treatment device for lithium-ion battery wastewater of the utility model;

[0018] Figure 2It is a partial structural schematic diagram of a split-type separation filter cartridge in a multiple treatment device for lithium-ion battery wastewater of the utility model. DETAILED DESCRIPTION

[0019] The present invention will be further described below in conjunction with specific embodiments and accompanying drawings.

[0020] Example 1: Figure 1 As shown, the multiple treatment device for lithium-ion battery wastewater provided by the utility model includes a coagulation and aeration integrated system and a multiple filtration system.

[0021] The coagulation and aeration integrated system includes a cylinder 1, a stirring device, an aeration device, a lithium-ion battery wastewater inlet 2 installed on the top of the cylinder and a drain outlet 3 installed on the bottom of the cylinder. The stirring device includes a motor 4 installed on the outside of the cylinder 1, a stirring rod 5 connected to the motor and arranged inside the cylinder 1, and a plurality of stirring blades 6 arranged on the stirring rod 5. A detachable isolation grille 7 is installed between adjacent stirring blades 6.

[0022] The aeration device includes an aeration nozzle 8, an aeration pipe 9 and an aeration fan 10. The aeration nozzle 8 is installed at the inner bottom end of the cylinder 1. One end of the aeration pipe 9 is connected to the aeration nozzle 8, and the other end is connected to the aeration fan 10 arranged outside the cylinder 1. The aeration fan 10 is installed at the top of the cylinder 1.

[0023] The multiple filtration system includes a shell 11, a physical adsorption device 12 and a physical separation and re-adsorption device 13 arranged in the shell. The physical adsorption device 12 is provided with two filter units. The first filter unit is provided with a detachable adsorption filter device 14. The top of the adsorption filter device 14 is provided with a water inlet pipe 15. The second filter unit is provided with a detachable adsorption filter device 27. The top of the adsorption filter device 27 is provided with a water inlet pipe 28. The filter units are separated by a partition 16. The adsorption material in the adsorption filter device 14 and the adsorption filter device 27 is activated carbon.

[0024] The physical separation and re-adsorption device 13 is provided with a detachable split separation filter cartridge 18 suspended in the physical separation and re-adsorption device 13 by a support structure 17, such as Figure 2 As shown, the split separation filter cartridge 18 includes a docking plate 22 arranged on the top, a plurality of docking ports 23 arranged on the docking plate 22 and a detachable filter element 24 connected to the docking port 23, and the docking plate 22 is made of stainless steel; a water outlet 19 is provided at the bottom of the physical separation and re-adsorption device 13; the physical adsorption device 12 and the physical separation and re-adsorption device 13 are connected through a water pipe 20, and a movable cover plate 29 is provided on the top of the shell 11, which is used to realize the replacement of the adsorption material in the adsorption filter device 14 and the adsorption filter device 27 in the physical adsorption device 12 and the detachable filter element 24 in the physical separation and re-adsorption device 13.

[0025] The coagulation-aeration integrated system and the multiple filtration system are connected through a pipeline - a water pipe 21, on which a valve 25 is provided. The water pipe 21 is connected to the water inlet pipe 15 of the first filter unit in the physical adsorption device 12. The coagulation-aeration integrated system and the multiple filtration system are installed on a fixed base 26.

[0026] The method for using the above-mentioned multi-treatment device for lithium-ion battery wastewater comprises the following steps:

[0027] (1) Coagulation treatment: The lithium-ion battery wastewater to which the flocculant has been added is injected into the cylinder 1 of the coagulation-aeration integrated system through the lithium-ion battery wastewater inlet 2, and the motor 4 of the stirring device is turned on. The stirring rod 5 drives the stirring blade 6 to stir the wastewater to accelerate the sedimentation of the wastewater. During the stirring process, the wastewater penetrates upward through the isolation grille 7 in sequence, which promotes the sedimentation of the waste residues and stains generated by the coagulation treatment of the wastewater. The purpose of the isolation grille 7 between the stirring blades 6 is to ensure stirring and coagulation and to isolate the residues on the isolation grille 7. If there is a failure in the equipment, the drain port 3 can be opened to discharge the internal wastewater to the outside.

[0028] (2) Aeration treatment: After coagulation is completed, the aeration fan 10 in the aeration device is started to transport air to the base of the aeration device through the air guide pipe 9, and then the wastewater is aerated through the aeration port 8 at the bottom to accelerate the contact between microorganisms and organic matter in the wastewater and dissolved oxygen, thereby ensuring that the microorganisms in the pool can oxidize and decompose the organic matter in the sewage under the condition of sufficient dissolved oxygen;

[0029] (3) Adsorption and filtration treatment: Open valve 25, and wastewater enters physical adsorption device 12 of the multiple filtration system through water pipe 21. The adsorption and filtration device 14 in the physical adsorption and filtration device 12 and the activated carbon in adsorption and filtration device 2 27 are used to purify the odor impurities in the wastewater. After the wastewater treatment is completed, the equipment can be closed and the movable cover 29 can be opened to disassemble and replace the adsorption materials in the adsorption and filtration device 14 in the physical adsorption and filtration device 12 and the adsorption and filtration device 2 27.

[0030] (4) Separation and filtration treatment: After being filtered by the physical adsorption device 12, the wastewater enters the split separation filter cartridge 18 in the physical separation and re-adsorption device 13 through the water pipe 20. The wastewater converges on the docking plate 22 and is diverted to a plurality of detachable filter elements 24 through a plurality of docking ports 23. The purified water passes through the detachable filter element 24 made of stainless steel and flows to the bottom of the physical separation and re-adsorption device 13 and is discharged through the drain port 19.

Claims

1. A multi-treatment device for lithium-ion battery wastewater, characterized in that: The invention comprises a coagulation-aeration integrated system and a multiple filtration system, wherein the coagulation-aeration integrated system comprises a stirring device for coagulating lithium-ion battery wastewater and an aeration device for aerating the coagulated wastewater after coagulation treatment, and the multiple filtration system comprises a physical adsorption device and a physical separation and re-adsorption device; the coagulation-aeration integrated system and the multiple filtration system are connected through a pipeline; the coagulation-aeration integrated system comprises a cylinder (1), a stirring device, an aeration device and a lithium-ion battery installed on the top of the cylinder (1); The invention relates to a sub-battery wastewater inlet (2); the stirring device comprises a motor (4) installed outside the cylinder (1), a stirring rod (5) connected to the motor and arranged inside the cylinder (1), and a plurality of stirring blades (6) arranged on the stirring rod (5); the aeration device comprises an aeration nozzle (8), an aeration pipe (9) and an aeration fan (10); the aeration nozzle (8) is installed at the bottom end of the cylinder (1); one end of the aeration pipe (9) is connected to the aeration nozzle (8), and the other end is connected to the aeration fan (10) arranged outside the cylinder (1).

2. The device according to claim 1, characterized in that A drainage outlet (3) is provided at the bottom of the cylinder (1); and a detachable isolation grille (7) is installed between adjacent stirring blades (6).

3. The device according to claim 1, characterized in that The multiple filtration system comprises a shell (11), a physical adsorption device (12) and a physical separation and re-adsorption device (13) arranged in the shell, wherein the physical adsorption device (12) is provided with a plurality of filter units, each filter unit is provided with a detachable adsorption filter device (14), a water inlet pipe (15) is provided at the top of the adsorption filter device (14), and each filter unit is separated by a partition (16); the physical separation and re-adsorption device (13) is provided with a detachable split separation filter cartridge (18) suspended in the physical separation and re-adsorption device (13) through a support structure (17), a water outlet (19) is provided at the bottom of the physical separation and re-adsorption device (13), the physical adsorption device (12) and the physical separation and re-adsorption device (13) are connected through a water pipe (20), and a movable cover plate (29) is provided at the top of the shell (11).

4. The device according to claim 3, characterized in that The split-type separation filter cartridge (18) comprises a docking plate (22) arranged at the top, a plurality of docking ports (23) arranged on the docking plate (22), and a detachable filter element (24) connected to the docking ports (23).

5. The device according to claim 3, characterized in that The adsorption filter device (14) is an adsorption filter screen with built-in adsorption material, and the adsorption material is activated carbon.

6. The device according to claim 3, characterized in that The pipeline is connected to the water inlet pipe (15) of the first filtering unit in the physical adsorption device (12).

7. The device according to claim 4, characterized in that The docking plate (22) and the detachable filter element (24) are both made of stainless steel.

8. The device according to claim 1, characterized in that The pipeline is provided with a valve (25).

9. The device according to claim 1, characterized in that The coagulation and aeration integrated system and the multiple filtration system are installed on a fixed base (26).

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