A wastewater treatment device for recycling waste batteries and a use method thereof

Abstract

The application provides a wastewater treatment equipment for waste battery recycling and a use method. The wastewater treatment equipment comprises, in sequence along a water flow direction, a neutralization tank, a flocculation tank, a sedimentation tank, an adsorption tank and a membrane treatment tank. The flocculation tank comprises a tank bin. A mixing device and multiple feeding devices are installed on the top of the tank bin. The mixing device comprises multiple material grooves that are switched by adjusted rotating wheels. The multiple feeding devices are distributed in a circular array around the rotating center of the material grooves. The wastewater in the neutralization tank is pumped to the material grooves at the feeding positions. The feeding devices are used for feeding flocculating reagents into the material grooves after rotation. An air injection pipe is arranged in the material groove. The air injection pipe is used for mixing the liquid and the reagents in the material groove through air injection bubbling. A push frame is arranged in the tank bin and is used for opening the discharge valve of the material groove after mixing. The flocculation process is improved. The continuous water feeding and water discharging actions are realized. The overall treatment efficiency is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of sewage treatment equipment, more particularly, to a sewage treatment equipment for waste battery recycling and a use method. BACKGROUND

[0002] In the process of waste battery recycling, a large amount of cleaning wastewater is generated. The commonly used treatment method at present mainly includes the steps of filtration, neutralization, flocculation, sedimentation, adsorption and membrane treatment. In the flocculation treatment link, coagulants, coagulant aids and flocculants are added to the wastewater in batches to promote the flocculation and sedimentation of large particle suspended solids.

[0003] In actual use, most of the treatment is to directly add reagents into the large pool bin, and then mix them through the stirring structure, and then perform sedimentation treatment. However, it has obvious defects. Due to the stirring action, sedimentation can only be performed after mixing is completed, and wastewater can only be transferred to the next link after sedimentation is completed. The wastewater in the previous link is supplemented after being discharged. It cannot continuously feed and discharge water, and can only be treated intermittently. The overall efficiency is not high and needs to be improved. SUMMARY

[0004] In order to overcome the defects of the prior art, the technical problem to be solved by the present application is to provide a sewage treatment equipment for waste battery recycling and a use method. The flocculation link is improved to realize continuous water feeding and discharging and improve the overall treatment efficiency.

[0005] To achieve this purpose, the following technical solutions are adopted in the present application:

[0006] The present application provides a sewage treatment equipment for waste battery recycling, which comprises a neutralization tank, a flocculation tank, a sedimentation tank, an adsorption tank and a membrane treatment tank arranged in sequence along the water flow direction. The flocculation tank comprises a pool bin. A mixing device and a plurality of feeding devices are installed on the top of the pool bin. The mixing device comprises a plurality of material grooves which are rotated by adjusting the rotating wheels. The plurality of feeding devices are distributed in a circular array around the rotation center of the material grooves. The wastewater in the neutralization tank is pumped to the material grooves at the feeding position. The feeding devices are used to add flocculating reagents to the material grooves after rotation. An air injection pipe is arranged in the material groove to mix the liquid and reagents in the material groove by air injection bubbling. A push frame is installed in the pool bin to open the discharge valve of the material groove after mixing.

[0007] In the preferable technical scheme of the present application, the mixing device comprises a motor, a material tray and a jet pipe; the material tray is rotatably installed on the top of the pool bin and is driven to rotate by the motor; a plurality of material grooves are arranged in a circumferential array around the rotation center on the material tray, and a jet pipe is installed in each material groove; the jet pipes are in communication with a manifold; the manifold is in communication with an external high-pressure gas source through a rotary joint; a discharge pipe is arranged at the bottom of the material groove in communication; a discharging valve is installed on the discharge pipe; the discharging valve is of a press valve structure; the push frame is in the form of an arc-shaped plate structure; the rear section corresponding to the rotation track of the discharging valve is arranged; when the discharging valve rotates to the position of the push frame, the pressure head of the discharging valve is gradually pressed to open along the rotation track from the entry end.

[0008] In the preferable technical scheme of the present application, the material tray comprises a support pipe and a cover head; a plurality of material grooves are fixedly arranged on the side wall of the support pipe and extend along the radial direction of the support pipe; the plurality of material grooves are arranged in a circumferential array around the axis of the support pipe; the bottom end of the support pipe is blocked; an axle strip is fixedly arranged at the center of the bottom surface; a pressing ring is fixedly arranged on the side wall of the axle strip; a bracket is installed on the top of the pool bin through bolt arrangement; a circular hole adapted to the axle strip is arranged at the center of the bracket; the axle strip is arranged in the circular hole; the pressing ring and the bracket are connected through a plane bearing; the cover head is fixedly installed on the top of the support pipe through bolt arrangement; a pipe strip is fixedly arranged at the top of the cover head; the pipe strip penetrates through the cover of the pool bin; the pipe strip and the output shaft of the motor are connected through a chain and sprocket transmission; a plurality of gas supply pipes are fixedly arranged on the side wall of the support pipe and penetrate into the support pipe and the material grooves; a manifold is installed in the support pipe; a one-way valve is installed at the communication position of the manifold and the gas supply pipe; the jet pipe is threadedly connected with the other end of the gas supply pipe; the top end of the manifold penetrates out of the top of the pipe strip; a rotary joint is installed at the top end of the manifold; the rotary joint is in communication with an external high-pressure gas source.

[0009] In the preferable technical scheme of the present application, a partition plate is fixedly arranged in the pool bin; the partition plate is located below the bracket and extends downward; the pool bin is divided into a buffer zone and an isolation zone by the partition plate; the buffer zone is located on the side close to the neutralization pool; the isolation zone is located on the side close to the sedimentation pool; a first overflow port in communication with the sedimentation pool is arranged at the top of the side wall of the isolation zone; a buffer baffle is installed in the buffer zone; the flocculating material and wastewater discharged from the material grooves flow to the lower side after contacting the buffer baffle; a first isolation piece and a second isolation piece are installed in the isolation zone from bottom to top; the second isolation piece is located below the first overflow port; the first isolation piece and the second isolation piece are used to block and reduce the upward floating of the flocculating material.

[0010] In the preferable technical scheme of the present application, the buffer baffle is in the form of an arc-shaped structure; the arc-shaped surface is upwardly convex; the top of the buffer baffle is connected to the top of the partition plate; the bottom is downwardly bent to the side away from the partition plate; the bottom end of the partition plate and the inner wall of the pool bin opposite to the partition plate form a narrowed opening.

[0011] In the preferred technical scheme of the present application, the first isolation member comprises two first support plates arranged oppositely, and a plurality of first shelf plates are fixedly arranged between the two first support plates, the first shelf plates are arranged obliquely, and the plurality of first shelf plates are arranged uniformly and at intervals.

[0012] In the preferred technical scheme of the present application, the second isolation member comprises two second support plates arranged oppositely, and a second shelf plate, two third shelf plates and a plurality of fourth shelf plates are fixedly arranged between the two second support plates; the second shelf plate is in a U-shaped structure and is fixedly arranged at the bottom of the second support plate; the two third shelf plates are arranged at the inner side of the two top sides of the second shelf plate correspondingly, and a passageway is formed between the third shelf plate and the second shelf plate; the top of the third shelf plate is bent towards the side away from the center of the second isolation member and is abutted at the partition plate or the inner wall of the pool bin, the bent part of the third shelf plate is higher than the top end of the second shelf plate, and a second overflow port is formed; the plurality of fourth shelf plates are arranged at the interval region of the bottom of the two third shelf plates, the fourth shelf plates are arranged obliquely, and the plurality of fourth shelf plates are arranged uniformly and at intervals; the bottom of the second support plate on one side is provided with a slag discharge port corresponding to the bottom of the second shelf plate, a slag discharge pipe is provided on the side wall of the pool bin correspondingly, and a discharge valve is arranged on the slag discharge pipe.

[0013] The application further provides a use method of the sewage treatment equipment for waste battery recycling, which comprises the following steps:

[0014] S1, the wastewater filtered by the external large debris enters the neutralization tank, and neutralization adjustment is performed in the neutralization tank;

[0015] S2, the wastewater enters the flocculation tank to react, generate flocculation, and preliminarily separate and precipitate;

[0016] S3, the wastewater enters the sedimentation tank to perform secondary precipitation and separate impurities;

[0017] S4, the wastewater enters the adsorption tank to perform adsorption filtration and remove particulate impurities;

[0018] S5, the wastewater enters the membrane treatment tank to further filter and intercept small molecular particles, and the water quality is detected, and the liquid meeting the standard is discharged;

[0019] In the S2 step, the more specific steps are as follows:

[0020] B1, the wastewater at the bottom of the neutralization tank is pumped to the flocculation tank by the pumping pump, and is put into the corresponding trough;

[0021] B2, the motor drives the tray to rotate by a preset angle, the trough is rotated and replaced at a fixed point, the corresponding feeding device is started, and the corresponding reagent is quantitatively put into the trough, an external high-pressure gas source is continuously supplied, the external gas is sprayed through the gas jet pipe, and the wastewater and the reagent in the trough are fully mixed;

[0022] B3, when the trough rotates and swings to the range of the push frame, the pressure head of the discharging valve abuts against the inner arc surface of the push frame to slide, forming the action of pressing and opening, so that the flocculation and waste water in the trough fall off;

[0023] B4, the flocculation and waste water fall off and slide along the buffer baffle and sink at the bottom of the pool bin;

[0024] B5, the waste water is continuously accumulated and supplemented, which inevitably causes disturbance, so that part of the flocculation floating upward, but most of them are blocked by the first isolation piece; a small part of the flocculation continues to rise, and only when it rises to the second overflow port, it will enter the passageway, further reducing the flocculation into the downstream section; the third frame plate can further block the flocculation, so that the flocculation moving to this position is deposited at the bottom of the second frame plate; a small number of flocculation enters the sedimentation tank through the first overflow port with the waste water.

[0025] The beneficial effects of the present application are:

[0026] The present application provides a kind of sewage treatment equipment and use method for waste battery recycling, processing equipment includes neutralization tank, flocculation tank, sedimentation tank, adsorption tank, membrane treatment tank in turn in water flow direction, waste water is sequentially neutralized, flocculation, sedimentation, adsorption, membrane treatment step, comprehensive treatment is carried out;

[0027] The flocculation tank includes a pool bin, a mixing device and a plurality of feeding devices are installed on the top of the pool bin;The mixing device includes a plurality of material troughs that are rotated and exchanged, the sewage in the neutralization tank is pumped to the material trough at the feeding position, and the feeding device is used to feed flocculation reagent into the material trough after rotation;A gas injection pipe is arranged in the material trough to mix the liquid and the reagent in the material trough by gas injection and bubbling;A push frame is installed in the pool bin to open the discharge valve of the material trough after mixing;The plurality of material troughs are arranged to quantitatively process the incoming waste water in batches, and after the reaction and flocculation are completed, the waste water is discharged, which does not cause excessive disturbance to the flocculation that has been deposited in the pool bin, and does not cause excessive influence on the overflow drainage at the top, so that the water inlet and the water outlet are continuous, and the processing efficiency is effectively guaranteed.

[0028] In addition, the material trough is rotated and exchanged to provide flocculation reaction time for the mixing of waste water and reagent, and to provide power for opening the discharge valve, so that the discharge valve is naturally opened for discharging after the material trough is rotated to the corresponding position, mechanical linkage is realized, and no additional electric drive components need to be arranged in the pool bin, which reduces the cost of the equipment and improves the safety of the operation. BRIEF DESCRIPTION OF DRAWINGS

[0029] Figure 1 It is a three-dimensional structure schematic diagram of a sewage treatment equipment for waste battery recycling provided in the specific embodiments of the present application.

[0030] Figure 2 is a perspective view of the flocculation tank provided in the specific embodiment of the present application;

[0031] Figure 3 is an expanded view of the flocculation tank provided in the specific embodiment of the present application;

[0032] Figure 4 is a perspective view of the mixing device provided in the specific embodiment of the present application;

[0033] Figure 5 is an expanded view of the mixing device provided in the specific embodiment of the present application, from a first perspective;

[0034] Figure 6 is an expanded view of the mixing device provided in the specific embodiment of the present application, from a second perspective;

[0035] Figure 7 is a perspective view of the tray provided in the specific embodiment of the present application;

[0036] Figure 8 is a perspective view of the bracket and pusher provided in the specific embodiment of the present application;

[0037] Figure 9 is a cross-sectional view of the flocculation tank provided in the specific embodiment of the present application;

[0038] Figure 10 is a perspective view of the second partition provided in the specific embodiment of the present application;

[0039] Figure 11 is a cross-sectional view of the second partition provided in the specific embodiment of the present application.

[0040] In the drawings:

[0041] 100, neutralization tank; 200, flocculation tank; 210, tank bin; 220, partition; 230, buffer area; 240, isolation area; 250, first overflow port; 260, buffer baffle; 270, first partition; 271, first support plate; 272, first shelf plate; 280, second partition; 281, second support plate; 282, second shelf plate; 283, third shelf plate; 284, fourth shelf plate; 285, pinch lane; 286, second overflow port; 287, slag discharge port;

[0042] 300, sedimentation tank; 400, adsorption tank; 500, membrane treatment tank;

[0043] 600. Mixing device; 610. Motor; 620. Material tray; 621. Material trough; 622. Discharge valve; 623. Support pipe; 624. Cover; 625. Shaft; 627. Pipe; 628. Air supply pipe; 630. Air jet pipe; 640. Manifold; 650. Rotary joint; 660. Check valve; 700. Feeding device; 800. Push frame. Detailed Implementation

[0044] The technical solution of the present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0045] like Figures 1 to 6 As shown in the figure, a wastewater treatment device for waste battery recycling is disclosed in a specific embodiment of the present invention, including a neutralization tank 100, a flocculation tank 200, a sedimentation tank 300, an adsorption tank 400, and a membrane treatment tank 500 arranged sequentially along the water flow direction; the flocculation tank 200 includes a tank 210, and a mixing device 600 and multiple feeding devices 700 are installed on the top of the tank 210; the mixing device 600 includes multiple adjustable rotating feed troughs 621, and the multiple feeding devices 700 are arranged in a circular array around the rotation center of the feed troughs 621. The wastewater from the neutralization tank 100 is pumped to the feed troughs 621 located at the feeding position, and the feeding devices 700 are used to add flocculant into the feed troughs 621 after they have rotated to the correct position; the feed troughs 621 are equipped with jet pipes 630, which mix the internal liquid and the agent by jet bubbling; the tank 210 is equipped with a pusher 800, which is used to open the discharge valve 622 of the feed troughs 621 after mixing.

[0046] The aforementioned wastewater treatment equipment for waste battery recycling employs multiple treatment tanks to sequentially neutralize, flocculate, settle, adsorb, and membrane treat wastewater for comprehensive treatment. The flocculation tank utilizes multiple feed troughs to quantitatively process the incoming wastewater in batches. After flocculation is complete, the wastewater is discharged downwards, minimizing disturbance to the already settled flocs and thus minimizing impact on the overflow drainage. The overall inflow and outflow are continuous, effectively ensuring overall treatment efficiency. Furthermore, the rotating feed troughs provide time for the flocculation reaction, allowing the wastewater and reagents to mix. This rotation also powers the opening of the discharge valve, enabling the feed trough to rotate to the appropriate position and automatically discharge the wastewater. This mechanical linkage eliminates the need for additional electrically driven components within the tanks, reducing equipment costs and improving operational safety. It should be noted that the neutralization tank, sedimentation tank, adsorption tank, and membrane treatment tank all employ common wastewater treatment methods with mature structures, which will not be elaborated upon further.

[0047] Furthermore, such as Figures 4 to 7The mixing device 600 comprises a motor 610, a tray 620, and a jet pipe 630. The tray 620 is rotatably installed on the top of the pool bin and is driven to rotate by the motor 610. The tray 620 is provided with a plurality of troughs 621 arranged in a circumferential array around the rotation center. Each trough 621 is internally provided with a jet pipe 630. The jet pipes 630 are all in communication with a manifold 640. The manifold 640 is in communication with an external high-pressure gas source through a rotary joint 650, so as to ensure that rotation and gas supply do not interfere with each other, and to realize continuous jet bubbling of the jet pipes during rotation, so that the flocculating material and the wastewater are fully mixed and in a suspension state, and to ensure that the flocculating material and the wastewater are discharged after the discharge valve is opened.

[0048] The bottom of the trough 621 is provided with a discharge pipe in communication. The discharge pipe is provided with a discharge valve 622. The discharge valve is a press valve structure. Figure 8 As shown in the figure, the push rack 800 is in the form of an arc-shaped plate structure. The rear section corresponding to the rotation track of the discharge valve is provided. When the discharge valve rotates to the position of the push rack, the pressure head of the discharge valve is gradually pressed and opened along the rotation track from the entry end. Further, the number of troughs is preferably 4. The discharge pipe is provided at the bottom of the end of the trough away from the rotation center. The length of the push rack is 1 / 4 of the circumference of the rotation track of the discharge valve. The shape of the push rack is not a complete regular concentric arc structure. The distance between the front end of the push rack and the center of the tray is greater than the radius of the rotation track of the pressure head of the discharge valve. The push rack deviates from the center of the tray along the direction of the rotation track to approach the center, so that the discharge valve is in a completely open state at least when it moves to the end position. It is preferably moved to the middle position to be in a completely open state and maintained to the end position to ensure complete discharge. The end of the pressure head of the discharge valve is in the form of an outward convex arc structure, which can better slide with the push rack to form an effective press opening. The discharge valve is a common press switch valve structure. After the external force is removed, it can be bounced back to the closed state. This means that it is only in the open state within the range of the push rack. The overall design can realize the opening of the corresponding discharge valve by the rotation of the tray. The discharge is complete without the need for additional electric drive components, which reduces the cost and improves the safety of the operation.

[0049] Further, the feeding device is a quantitative feeder, and there are three of them, which are respectively arranged corresponding to the other three troughs except the discharge position. They are arranged in sequence along the rotation direction of the tray from the beginning of feeding wastewater into the trough. When the tray rotates at a fixed point, the corresponding feeding device quantitatively feeds the corresponding medicament. The jet pipe continuously sprays outside during this action, so that the wastewater and the medicament are fully mixed to ensure the overall flocculation effect. It should be noted that the quantitative feeder is a common structure instrument, which can be purchased and used on the market. Therefore, no further description is given.

[0050] Further, as shown in the figure, Figures 4 to 7As shown, the tray 620 comprises a support tube 623, a cover head 624; the sidewall of the support tube 623 is fixedly provided with a plurality of troughs 621, the troughs extend along the radial direction of the support tube, and the plurality of troughs 621 are circumferentially arranged around the axis of the support tube 623; the bottom end of the support tube 623 is blocked, and the bottom surface is fixedly provided with a shaft strip 625, and the sidewall of the shaft strip 625 is fixedly provided with a pressing ring 626; the top of the pool bin 210 is provided with a bracket through bolt mounting, and the center of the bracket is correspondingly provided with a circular hole matched with the shaft strip, the shaft strip is arranged in the circular hole, and the pressing ring is connected with the bracket through a plane bearing; the cover head 624 is fixedly installed on the top of the support tube 623 through bolts, and the top of the cover head 624 is fixedly provided with a tube strip 627, the tube strip penetrates the bin cover of the pool bin, and the tube strip is connected with the output shaft of the motor through a chain and sprocket transmission; so that the whole tray is rotatably installed on the top of the pool bin and is connected with the motor to realize transmission, so that it can rotate smoothly; the push bracket is directly welded and fixed on the bracket, and the bracket is installed on the pool bin to complete the required alignment.

[0051] A plurality of gas conveying pipes 628 are fixedly arranged on the sidewall of the support tube 623, and the two ends of the gas conveying pipes 628 penetrate into the troughs and the inside of the support tube respectively; a manifold 640 is installed in the inside of the support tube 623, a one-way valve 660 is installed at the communication position of the manifold 640 and the gas conveying pipe 628, and a jet pipe is threadedly connected with the other end of the gas conveying pipe; the top end of the manifold 640 penetrates out of the top of the tube strip 627, a rotary joint 650 is installed at the top end of the manifold 640, the rotary joint is connected with an external high-pressure gas source, the gas conveying pipeline is built, the cooperation between rotation and gas supply is ensured, and the waste water in the trough does not interfere with the gas conveying pipeline, and the waste water in the trough is effectively prevented from entering the gas conveying pipeline.

[0052] Further, as shown in the drawings, Figure 9 The inside of the pool bin 210 is fixedly provided with a partition plate 220, the partition plate is located below the bracket and extends downward, the partition plate 220 divides the pool bin into a buffer area 230 and an isolation area 240, the buffer area 230 is located on one side close to the neutralization tank 100, the isolation area is located on one side of the sedimentation tank, the sidewall top of the isolation area 240 is provided with a first overflow port 250 communicated with the sedimentation tank 300; the buffer area 230 is provided with a buffer baffle 260, the flocculating material and waste water discharged from the trough flow to the lower side after contacting the buffer baffle; the isolation area 240 is sequentially provided with a first isolation piece 270 and a second isolation piece 280 from bottom to top, the second isolation piece is located below the first overflow port, and the first isolation piece and the second isolation piece are used to block and reduce the floating of the flocculating material; so that the inside of the pool bin is divided into two areas of the buffer area and the isolation area, the dropping of the material is deviated from the discharge position, and the influence of the dropping of the material on the discharge position is reduced as much as possible; and the first isolation piece and the second isolation piece are arranged, which can further block the floating of the flocculating material and further reduce the flow of the flocculating material into the sedimentation tank.

[0053] Further, the buffer baffle is in an arc-shaped structure, and the arc-shaped surface is upwardly convex; the top of the buffer baffle is connected to the top of the partition plate, and the bottom is bent downward to the side away from the partition plate, so that a narrowing opening is formed between the bottom end of the partition plate and the inner wall of the pool bin opposite to the partition plate; the arc-shaped buffer surface is provided to minimize the impact of the wastewater falling in the trough and reduce the disturbance to the wastewater in the pool bin, thereby reducing the floating of the flocculation material.

[0054] Further, the first partition 270 comprises two oppositely arranged first support plates 271, and a plurality of first shelf plates 272 are fixedly arranged between the two first support plates 271; the first shelf plates 272 are inclinedly arranged and evenly spaced; the first shelf plates can not only maintain sufficient channels to ensure the flow of wastewater, but also block the floating flocculation material without affecting the sinking of the flocculation material to the bottom of the pool bin.

[0055] Further, as shown in Figure 10 、 Figure 11 the second partition 280 comprises two oppositely arranged second support plates 281, and a second shelf plate 282, two third shelf plates 283 and a plurality of fourth shelf plates 284 are fixedly arranged between the two second support plates 281; the second shelf plate 282 is in a U-shaped structure and is fixedly arranged at the bottom of the second support plate; the two third shelf plates are arranged on the inner side of the top of the two sides of the second shelf plate, and a gap 285 is formed between the third shelf plate 283 and the second shelf plate 282; the top of the third shelf plate is bent toward the side away from the center of the second partition, and is abutted at the partition plate or the inner wall of the pool bin; the bent portion of the third shelf plate 283 is higher than the top end of the second shelf plate 282, forming a second overflow port 286; this design can form a narrowing gap upward at the two sides of the second partition, further limiting the trajectory of the flocculation material, and the second overflow port is arranged at the top position of the gap, which can minimize the disturbance to the wastewater, and the flocculation material naturally floats upward without enough force, thereby minimizing the flocculation material passing through the second overflow port into the downstream link;

[0056] The plurality of fourth shelf plates 284 are arranged at the spaced areas between the bottoms of the two third shelf plates 283, and the fourth shelf plates 284 are inclinedly arranged and evenly spaced; this design can not only strengthen the structural strength of the second partition, but also further strengthen the blocking effect and prevent the flocculation material from flowing to the next link; the second support plate 281 on one side is provided with a residue discharge port 287 corresponding to the bottom of the second shelf plate 282, and a residue discharge pipe is correspondingly provided in the side wall of the pool bin, and a discharge valve is installed on the residue discharge pipe to discharge the sediment settled at the bottom of the second shelf plate.

[0057] The application also provides a method for using the sewage treatment equipment for recycling waste batteries, which comprises the following steps:

[0058] S1, the external wastewater after large debris filtration enters the neutralization tank, and neutralization adjustment is carried out in the neutralization tank; a feeding device is installed on the top of the neutralization tank, which is used for feeding neutralizing agents to neutralize and treat the wastewater;

[0059] S2, the wastewater enters the flocculation tank to react, generate flocculation, and preliminarily separate and precipitate;

[0060] S3, the wastewater enters the sedimentation tank to carry out secondary precipitation and separate impurities;

[0061] S4, the wastewater enters the adsorption tank to carry out adsorption filtration and remove particulate impurities;

[0062] S5, the wastewater enters the membrane treatment tank for further filtration to intercept small molecular particles; and the water quality is detected, and the liquid meeting the standard is discharged;

[0063] In the S2 step, the more specific steps are as follows:

[0064] B1, the wastewater at the bottom of the neutralization tank is pumped to the flocculation tank by a pumping pump, and is fed into the corresponding trough; the input port of the pumping pump is communicated with the bottom of the neutralization tank through a first water conveying pipe, the output port of the pumping pump is provided with a second water conveying pipe, the second water conveying pipe penetrates through the top of the tank bin and is arranged above the corresponding trough; a shut-off valve and a flow meter are installed on the second water conveying pipe, so as to realize quantitative feeding of the wastewater, realize batch processing, improve work efficiency, and also improve the quality of neutralization reaction;

[0065] B2, the motor drives the tray to rotate by a preset angle, the trough rotates and rotates in turn, the corresponding feeding device is started, and the corresponding agent is quantitatively fed into the trough; the external high-pressure gas source continuously supplies, and the wastewater and the agent in the trough are fully mixed through the jet pipe;

[0066] B3, when the trough rotates and swings to the range of the push frame, the pressure head of the discharging valve abuts against the inner arc surface of the push frame to slide, forming a pressing opening action, so that the flocculation and the wastewater in the trough fall off;

[0067] B4, the flocculation and the wastewater fall off and slide along the buffer baffle and sink at the bottom of the tank bin;

[0068] B5, the wastewater continuously accumulates and supplements, which inevitably causes disturbance, so that part of the floating flocculation floats upwards, but most of them are blocked by the first isolation piece; a small part of the flocculation continues to rise, and only when it rises to the second overflow port, it will enter the channel to further reduce the flocculation entering the downstream section; the third shelf plate can further block the flocculation, so that the flocculation moving to this position precipitates at the bottom of the second shelf plate; a very small number of flocculations enter the sedimentation tank through the first overflow port along with the wastewater.

[0069] It should be noted that the precipitates in the flocculation tank and the sedimentation tank need to be cleaned regularly, including the flocculation material deposited in the bent recessed part of the second shelf, to prevent excessive accumulation from affecting the normal wastewater treatment operation and effect.

[0070] The application is described by preferred embodiments, and those skilled in the art know that various changes or equivalent replacements can be made to the features and embodiments without departing from the spirit and scope of the application. The application is not limited by the specific embodiments disclosed herein, and other embodiments falling within the claims of the application are within the scope of the application.

Claims

1. A wastewater treatment equipment for waste battery recycling, comprising a neutralization tank, a flocculation tank, a sedimentation tank, an adsorption tank and a membrane treatment tank arranged in sequence along the water flow direction; characterized in that: the flocculation tank comprises a tank house, and a mixing device and a plurality of feeding devices are mounted on the top of the tank house; the mixing device comprises a plurality of material grooves with adjusted rotating wheels, and the plurality of feeding devices are arranged in a circumferential array around the rotating center of the material grooves; the wastewater in the neutralization tank is pumped to the material grooves at the feeding positions, and the feeding devices are used to feed flocculating reagents into the material grooves after rotation; an air injection pipe is arranged inside the material groove to mix the liquid and the reagents in the material groove through air injection bubbling; a push frame is mounted inside the tank house to open the discharge valve of the material groove after mixing; the mixing device comprises a motor, a material disc and an air injection pipe; the material disc is rotatably mounted on the top of the tank house and is driven to rotate by the motor; a plurality of material grooves are arranged in a circumferential array around the rotating center on the material disc, and an air injection pipe is mounted inside each material groove and communicates with a manifold; a discharge pipe is arranged at the bottom of the material groove and is provided with a discharge valve in the form of a press valve; the push frame is in the form of an arc-shaped plate structure and is arranged at the rear section corresponding to the rotating track of the discharge valve; when the discharge valve rotates to the position of the push frame, the push frame gradually presses and opens the discharge valve from the beginning of the rotating track; the length of the push frame is 1 / 4 of the circumference of the rotating track of the discharge valve; the distance between the front end of the push frame and the center of the material disc is greater than the radius of the rotating track of the head of the discharge valve; the push frame deviates towards the center of the material disc along the direction of the rotating track and moves to the end position; when the discharge valve is in the fully open state; the material disc comprises a support pipe and a cover head; a plurality of material grooves are fixedly arranged on the side wall of the support pipe and extend along the radial direction of the support pipe; the plurality of material grooves are arranged in a circumferential array around the axis of the support pipe; the bottom end of the support pipe is blocked, and a shaft strip is fixedly arranged at the center of the bottom surface; a compression ring is fixedly arranged on the side wall of the shaft strip; a bracket is mounted on the top of the tank house by bolting, and a circular hole corresponding to the shaft strip is arranged at the center of the bracket; the shaft strip is arranged in the circular hole, and the compression ring and the bracket are connected by a plane bearing; the cover head is fixedly mounted on the top of the support pipe by bolting, and a pipe strip is fixedly arranged at the top of the cover head; the pipe strip penetrates through the tank cover of the tank house, and the pipe strip and the output shaft of the motor are connected by a chain and sprocket transmission; a plurality of gas supply pipes are fixedly arranged on the side wall of the support pipe and penetrate into the material grooves and the support pipe; a one-way valve is arranged at the communication position of the manifold and the gas supply pipe; the air injection pipe is threadedly connected with the other end of the gas supply pipe; the top end of the manifold penetrates out of the top of the pipe strip, and a rotating joint is arranged at the top end of the manifold and communicates with an external high-pressure gas source.

2. The wastewater treatment equipment for waste battery recycling according to claim 1, characterized in that: a partition plate is fixedly arranged inside the tank house, the partition plate is located below the bracket and extends downward, the tank house is divided into a buffer zone and an isolation zone by the partition plate, the buffer zone is located on the side close to the neutralization tank, the isolation zone is located on the side close to the sedimentation tank, and a first overflow port communicating with the sedimentation tank is arranged at the top of the side wall of the isolation zone. ​ ​ ​ The buffer baffle is installed in the buffer area, and the flocculating material and wastewater discharged from the trough flow to the lower side after contacting the buffer baffle. The first isolation piece and the second isolation piece are sequentially installed from bottom to top in the isolation area, and the second isolation piece is located below the first overflow port, and the first isolation piece and the second isolation piece are used to block and reduce the upward floating of the flocculating material.

3. The sewage treatment equipment for waste battery recycling according to claim 2, characterized in that: The buffer baffle is in an arc shape structure, and the arc surface is upwardly convex; The top of the buffer baffle is connected to the top of the partition plate, and the bottom is bent downward to the side away from the partition plate, and the bottom end of the partition plate and the inner wall of the pool bin opposite to the partition plate form a narrow opening.

4. The sewage treatment equipment for waste battery recycling according to claim 2, characterized in that: The first isolation piece includes two first support plates arranged oppositely, and a plurality of first shelf plates are fixedly arranged between the two first support plates, and the first shelf plates are arranged obliquely, and the plurality of first shelf plates are arranged uniformly and spaced apart.

5. The sewage treatment equipment for waste battery recycling according to claim 4, characterized in that: The second isolation piece includes two second support plates arranged oppositely, and a second shelf plate, two third shelf plates and a plurality of fourth shelf plates are fixedly arranged between the two second support plates; The second shelf plate is in a U-shaped structure and is fixedly arranged at the bottom of the second support plate; The two third shelf plates are arranged on the inner side of the top of the two sides of the second shelf plate, and a passageway is formed between the third shelf plate and the second shelf plate; the top of the third shelf plate is bent to the side away from the center of the second isolation piece and abuts against the partition plate or the inner wall of the pool bin, and the bent part of the third shelf plate is higher than the top end of the second shelf plate, forming a second overflow port; The plurality of fourth shelf plates are arranged at the spaced apart area between the bottoms of the two third shelf plates, and the fourth shelf plates are arranged obliquely, and the plurality of fourth shelf plates are arranged uniformly and spaced apart; The second support plate on one side is provided with a residue discharge port corresponding to the bottom of the second shelf plate, and a residue discharge pipe is provided on the side wall of the pool bin in correspondence, and a discharge valve is installed on the residue discharge pipe.

6. A method for using a sewage treatment equipment for waste battery recycling, characterized in that: The method comprises the following steps: S1, the wastewater filtered by the external large impurities enters the neutralization tank, and is subjected to neutralization adjustment in the neutralization tank; S2, the wastewater enters the flocculation tank to react, generate flocculating material, and is preliminarily separated and precipitated; S3, the wastewater enters the sedimentation tank to be subjected to secondary precipitation and separate impurities; S4, the wastewater enters the adsorption tank to be subjected to adsorption filtration and remove particulate impurities; S5, the wastewater enters the membrane treatment tank to be further filtered to intercept small molecular particles, and the water quality is detected, and the liquid meeting the standard is discharged; In the S2 step, the more specific steps are as follows: B1, the wastewater at the bottom of the neutralization tank is pumped to the flocculation tank by the pumping pump, and is put into the corresponding trough; B2, the motor drives the material disc to rotate by a preset angle, the trough is rotated and rotated in turn, the corresponding feeding device is started, and the corresponding reagent is quantitatively put into the trough, the external high-pressure gas source continuously supplies, and the wastewater and the reagent in the trough are fully mixed through the jet pipe. B3, when the hopper rotates to the range of the push frame, the pressure head of the discharging valve abuts the inner arc surface of the push frame to form the action of pressing opening, so that the flocculation and wastewater in the hopper fall off; B4, the flocculation and wastewater fall off and slide along the buffer baffle and sink at the bottom of the pool bin; B5, the wastewater in the continuous accumulation and replenishment will inevitably cause disturbance, so that part of the flocculation floats upward with the floating flocculation, but most of them are blocked by the first isolation piece; a small part of the flocculation continues to rise, and only when it rises to the second overflow port can it enter the passageway, further reducing the flocculation into the downstream section; the third shelf can further block the flocculation, so that the flocculation moving to this position is deposited at the bottom of the second shelf; a small number of flocculation enters the sedimentation tank through the first overflow port with the wastewater.

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