Sewage treatment equipment for recycling waste batteries and use method

Abstract

The invention provides sewage treatment equipment for waste battery recovery and a use method. The sewage treatment equipment comprises a neutralization tank, a flocculation tank, a sedimentation tank, an adsorption tank and a membrane treatment tank which are sequentially arranged along a water flow direction, the flocculation tank comprises a tank bin, and a mixing device and a plurality of feeding devices are mounted at the top of the tank bin; the mixing device comprises a plurality of troughs which are adjusted to rotate and alternate, the plurality of feeding devices are distributed in a circumferential array around the rotating center of the troughs, sewage in the neutralization tank is pumped and conveyed to the troughs at the feeding part, and the feeding devices are used for feeding flocculation agents into the troughs which are rotated in place; an air injection pipe is arranged in the trough, and liquid and chemicals in the trough are mixed through air injection bubbling; a push frame is mounted in the pool bin and is used for opening a discharging valve of the trough after material mixing is completed; the flocculation link is improved, continuous water feeding and water discharging are achieved, and the overall treatment efficiency is improved.

Description

Technical Field

[0001] The present invention relates to the field of sewage treatment equipment, and more specifically, to sewage treatment equipment for recycling waste batteries and a use method thereof. Background Art

[0002] In the process of recycling and treating used batteries, a large amount of cleaning wastewater will be generated. The commonly used treatment methods are mainly filtration, neutralization, flocculation, precipitation, adsorption, and membrane treatment. Among them, in the flocculation treatment link, coagulants, coagulants, and flocculants need to be added to the wastewater in batches to promote the flocculation and precipitation of large suspended solids.

[0003] In actual use, most of the treatment is to directly add the reagent into the large pool, and then mix it through the stirring structure, and then carry out sedimentation treatment; however, it also has obvious defects. Due to the limitation of the stirring action, sedimentation can only be carried out after the mixing is completed, and the wastewater can only be transferred to the next link after the sedimentation is completed. The wastewater from the previous link is replenished after discharge. It is impossible to carry out continuous water intake and drainage, and can only carry out intermittent treatment. The overall efficiency is not high and needs to be improved. Summary of the invention

[0004] In order to overcome the defects of the prior art, the technical problem to be solved by the present invention is to propose a sewage treatment equipment and a method for using waste battery recycling, which improves the flocculation link to achieve continuous water intake and drainage, thereby improving the overall treatment efficiency.

[0005] To achieve this object, the present invention adopts the following technical solutions:

[0006] The present invention provides a wastewater treatment device for recycling used batteries, comprising a neutralization tank, a flocculation tank, a sedimentation tank, an adsorption tank, and a membrane treatment tank which are sequentially arranged along the water flow direction; the flocculation tank comprises a tank bin, and a mixing device and a plurality of feeding devices are installed on the top of the tank bin; the mixing device comprises a plurality of troughs which are adjusted to rotate and rotate, and the plurality of feeding devices are distributed in a circular array around the rotation center of the trough, and the sewage in the neutralization tank is pumped to the trough at the feeding position, and the feeding device is used to feed a flocculating agent into the trough after it is rotated into place; an air jet pipe is arranged inside the trough, and the liquid and the agent inside are mixed by air jet bubbling; a push rack is installed inside the tank bin, and is used to open the discharge valve of the trough after the mixing is completed.

[0007] In a preferred technical solution of the present invention, the mixing device includes a motor, a material tray, and a gas injection pipe; the material tray is rotatably installed on the top of the pool bin and is driven by the motor to rotate; the material tray is provided with a plurality of material grooves circumferentially arrayed around the rotation center, and a gas injection pipe is installed inside each material groove. The gas injection pipes are all communicated with a manifold pipe, and the manifold pipe is conducted to an external high-pressure gas source through a rotary joint; a discharge pipe is communicated at the bottom of the material groove, and a blanking valve is installed on the discharge pipe. The blanking valve is of a pressing valve structure; the pushing frame is in the shape of an arc-shaped plate structure and is arranged corresponding to the rear section of the rotation track of the blanking valve. When the blanking valve rotates to the position of the pushing frame, the pressing head of the blanking valve is gradually pressed and opened along the rotation track from the inlet end.

[0008] In a preferred technical solution of the present invention, the material tray includes a support pipe and a cover head; a plurality of material grooves are fixedly provided on the side wall of the support pipe, and the material grooves extend along the radial direction of the support pipe. The plurality of material grooves are circumferentially arrayed around the axis of the support pipe; the bottom end of the support pipe is blocked, and a shaft bar is fixedly provided at the center of the bottom surface. A pressure ring is fixedly provided on the side wall of the shaft bar; a bracket is installed on the top of the pool bin through bolts, and a round hole adapted to the shaft bar is correspondingly provided at the center of the bracket. The shaft bar is inserted through the round hole, and the pressure ring is connected to the bracket through a plain bearing; the cover head is fixedly installed on the top of the support pipe through bolts, and a pipe bar is fixedly provided on the top of the cover head. The pipe bar rotatably penetrates through the cover of the pool bin, and the pipe bar is connected to the output shaft of the motor through a chain and sprocket drive; a plurality of gas transmission pipes are fixedly provided on the side wall of the support pipe, and both ends of the gas transmission pipes respectively penetrate into the material groove and the inside of the support pipe; the manifold pipe is installed inside the support pipe, and a one-way valve is installed at the connection between the manifold pipe and the gas transmission pipe. The gas injection pipe is threadedly connected and matched with the other end of the gas transmission pipe; the top end of the manifold pipe passes through the top of the pipe bar, and a rotary joint is installed at the top end of the manifold pipe and is communicated with an external high-pressure gas source through the rotary joint.

[0009] In a preferred technical solution of the present invention, a partition board is fixedly provided inside the pool bin. The partition board is located below the bracket and extends downward. The partition board divides the pool bin into a buffer area and an isolation area. The buffer area is located on the side close to the neutralization pool, and the isolation area is located on the side of the sedimentation tank. A first overflow port communicated with the sedimentation tank is provided at the top of the side wall of the isolation area; a buffer baffle is installed in the buffer area. The flocculants and wastewater discharged and dropped from the material groove flow to the lower part after contacting the buffer baffle; a first isolation member and a second isolation member are sequentially installed from bottom to top in the isolation area. The second isolation member is located below the first overflow port. The first isolation member and the second isolation member are used to block and reduce the floating of flocculants.

[0010] In a preferred technical solution of the present invention, the buffer baffle is of an arc-shaped structure, and the arc surface protrudes upward; the top of the buffer baffle is connected to the top of the partition board, and the bottom bends downward toward the side away from the partition board. A narrowing port is formed between the bottom end of the partition board and the inner wall of the pool bin opposite to the partition board.

[0011] In a preferred technical solution of the present invention, the first separator includes two relatively arranged first support plates, and a plurality of first support plates are fixedly arranged between the two first support plates. The first support plates are inclined, and the plurality of first support plates are evenly spaced.

[0012] In a preferred technical solution of the present invention, the second separator includes two relatively arranged second support plates, and a second support plate, two third support plates and a plurality of fourth support plates are fixedly arranged between the two second support plates; the second support plate has a U-shaped structure and is fixedly arranged at the bottom of the second support plate; the two third support plates are correspondingly arranged on the inner side close to the top of both sides of the second support plate, and a channel is formed between the third support plate and the second support plate; the top of the third support plate is bent toward the side away from the center of the second separator and abuts against the partition or the inner wall of the tank, and the bent part of the third support plate is higher than the top end of the second support plate to form a second overflow port; the plurality of fourth support plates are arranged in the spaced area at the bottom of the two third support plates, the fourth support plates are inclined, and the plurality of fourth support plates are evenly spaced; a slag discharge port is correspondingly arranged at the bottom of the second support plate on one side, a slag discharge pipe is correspondingly communicated with the side wall of the tank, and a discharge valve is installed on the slag discharge pipe.

[0013] The present invention also provides a use method of the sewage treatment equipment for waste battery recycling, including the following steps:

[0014] S1, the wastewater filtered by large sundries externally enters the neutralization tank and is neutralized and adjusted in the neutralization tank;

[0015] S2, the wastewater enters the flocculation tank for reaction to generate flocs, and is preliminarily separated and precipitated;

[0016] S3, the wastewater enters the sedimentation tank for secondary sedimentation to separate impurities;

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

[0018] S5, the wastewater enters the membrane treatment tank for further filtration to intercept small molecular particles; and the water quality is detected, and the qualified liquid is discharged externally;

[0019] Among them, in step S2, the more specific steps are as follows:

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

[0021] B2, the motor drives the material tray to rotate a preset angle, the trough rotates and rotates at a fixed point; the corresponding feeding device is started, and the corresponding medicament is quantitatively put into the trough; the external high-pressure air source is continuously supplied, and air is blown externally through the air jet pipe to fully mix the wastewater and the medicament inside the trough;

[0022] B3. When the material trough rotates and swings to the range of the pushing frame, the pressure head of the blanking valve abuts against the inner arc surface of the pushing frame and slides, forming an action of pressing and opening, so that the flocculants and waste water inside the material trough fall off;

[0023] B4. The flocculants and waste water fall off and slide down along the buffer baffle, and sink to the bottom of the pool bin;

[0024] B5. The waste water accumulates continuously and inevitably causes disturbance, making some of the floating flocculants float upward, but most of them are blocked by the first isolation member; a small part of the flocculants continue to rise, and only when they rise to the second overflow port will they enter the channel, further reducing the entry of flocculants into the downstream section; the third shelf board can further block the flocculants, so that the flocculants moving to this position precipitate at the bottom of the second shelf board; extremely few flocculants enter the sedimentation tank through the first overflow port along with the waste water.

[0025] The beneficial effects of the present invention are as follows:

[0026] A sewage treatment device and a using method for recycling waste batteries provided by the present invention. The treatment device includes 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, and the waste water is subjected to neutralization, flocculation, sedimentation, adsorption, and membrane treatment steps in sequence for comprehensive treatment;

[0027] Among them, the flocculation tank includes a pool bin, and 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 adjusted to rotate in turn. The sewage in the neutralization tank is pumped and transported to the material trough at the feeding position, and the feeding device is used to put flocculation agents into the material trough after rotation; an air injection pipe is arranged inside the material trough, and the liquid and the agent inside are mixed by jetting air bubbles; a pushing frame is installed inside the pool bin to open the blanking valve of the material trough after mixing; by setting a plurality of material troughs, the incoming waste water is treated in batches quantitatively. After the reaction and flocculation are completed, it falls and is discharged downward, which will not cause too much disturbance to the flocculants that have already precipitated in the pool bin, and naturally will not have too much impact on the overflow drainage at the top. The overall water inlet and drainage are continuous, effectively ensuring the overall treatment efficiency;

[0028] Moreover, the rotation and displacement of the material trough provide a flocculation reaction time for the mixing of waste water and agents, and also use the rotation to provide power for opening the blanking valve, so that the material trough rotates to the corresponding position and naturally opens the blanking valve for discharging, realizing mechanical linkage cooperation, without the need to additionally set electric drive components inside the pool bin, reducing equipment costs and improving the safety of operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a three-dimensional structural schematic diagram of a sewage treatment device for recycling waste batteries provided in a specific embodiment of the present invention;

[0030] Figure 2 It is a schematic three - dimensional structure diagram of a flocculation tank provided in a specific embodiment of the present invention;

[0031] Figure 3 It is a schematic three - dimensional unfolded structure diagram of a flocculation tank provided in a specific embodiment of the present invention;

[0032] Figure 4 It is a schematic three - dimensional structure diagram of a mixing device provided in a specific embodiment of the present invention;

[0033] Figure 5 It is a schematic three - dimensional unfolded structure diagram of a mixing device provided in a specific embodiment of the present invention from a first perspective;

[0034] Figure 6 It is a schematic three - dimensional unfolded structure diagram of a mixing device provided in a specific embodiment of the present invention from a second perspective;

[0035] Figure 7 It is a schematic three - dimensional structure diagram of a tray provided in a specific embodiment of the present invention;

[0036] Figure 8 It is a schematic three - dimensional structure diagram of a bracket and a pushing frame provided in a specific embodiment of the present invention;

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

[0038] Figure 10 It is a schematic three - dimensional structure diagram of a second isolation member provided in a specific embodiment of the present invention;

[0039] Figure 11 It is a cross - sectional view of a second isolation member provided in a specific embodiment of the present invention.

[0040] In the figure:

[0041] 100, neutralization tank; 200, flocculation tank; 210, tank compartment; 220, partition board; 230, buffer zone; 240, isolation zone; 250, first overflow port; 260, buffer baffle; 270, first isolation member; 271, first support plate; 272, first frame plate; 280, second isolation member; 281, second support plate; 282, second frame plate; 283, third frame plate; 284, fourth frame plate; 285, channel; 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, Tray; 621, Feeding trough; 622, Discharge valve; 623, Support pipe; 624, Cap; 625, Shaft bar; 627, Pipe bar; 628, Gas transmission pipe; 630, Jet pipe; 640, Confluence pipe; 650, Rotary joint; 660, Check valve; 700, Feeding device; 800, Pushing frame. Detailed implementation manners

[0044] The technical solution of the present invention will be further described below in conjunction with the accompanying drawings and through specific implementation manners.

[0045] As Figures 1 to 6 shown, a sewage treatment device for waste battery recycling disclosed in a specific embodiment of the present invention includes a neutralization tank 100, a flocculation tank 200, a sedimentation tank 300, an adsorption tank 400, and a membrane treatment tank 500 arranged in sequence along the water flow direction; the flocculation tank 200 includes a tank chamber 210, and a mixing device 600 and a plurality of feeding devices 700 are installed on the top of the tank chamber 210; the mixing device 600 includes a plurality of feeding troughs 621 that are adjusted to rotate in rotation, and a plurality of feeding devices 700 are distributed in a circumferential array around the rotation center of the feeding trough 621. The sewage in the neutralization tank 100 is pumped and transported to the feeding trough 621 at the feeding position, and the feeding device 700 is used to put flocculation agents into the feeding trough 621 after rotation; a jet pipe 630 is arranged inside the feeding trough 621 to mix the liquid and the agent inside by jet bubbling; a pushing frame 800 is installed inside the tank chamber 210 to open the discharge valve 622 of the feeding trough 621 after mixing is completed.

[0046] For the above-mentioned sewage treatment device for waste battery recycling, the wastewater is sequentially subjected to neutralization, flocculation, sedimentation, adsorption, and membrane treatment steps through a plurality of treatment tanks for comprehensive treatment; among them, in the flocculation tank, a plurality of feeding troughs are set to quantitatively batch-treat the incoming wastewater. After the reaction and flocculation are completed, it will then fall and be discharged, which will not cause excessive disturbance to the flocs that have already settled in the tank chamber, and naturally will not have too much impact on the overflow drainage at the top. The overall water inlet and drainage are continuous, effectively ensuring the overall treatment efficiency; and, the feeding trough rotates and changes positions, providing time for the flocculation reaction of the mixture of wastewater and the agent, and also using the rotation to provide power for opening the discharge valve, so that the feeding trough rotates to the corresponding position and naturally opens the discharge valve for discharging, realizing mechanical linkage cooperation, without additionally setting electric drive components inside the tank chamber, reducing equipment costs and also improving the safety of operation. It should be noted that the neutralization tank, sedimentation tank, adsorption tank, and membrane treatment tank all adopt relatively common treatment methods in sewage treatment, and the corresponding structures are also relatively mature, so they will not be elaborated here.

[0047] Furthermore, as Figures 4 to 7The mixing device 600 includes a motor 610, a material tray 620, and a jet pipe 630. The material tray 620 is rotatably installed on the top of the pool bin and is driven by the motor 610 to rotate. The material tray 620 is provided with a plurality of material grooves 621 that are circumferentially and arrayed around the rotation center. A jet pipe 630 is installed inside each material groove 621. The jet pipes 630 are all connected to a manifold 640. The manifold 640 is connected to an external high-pressure air source through a rotary joint 650, ensuring that rotation and air supply do not interfere with each other. During the rotation process, the jet pipes continuously jet air to form bubbles, enabling the flocculants inside to be fully mixed with the wastewater and remain in a suspension state, ensuring that both the flocculants and the wastewater inside can be discharged after the discharge valve is opened.

[0048] A discharge pipe is connected to the bottom of the material groove 621, and a discharge valve 622 is installed on the discharge pipe. The discharge valve has a push-button valve structure. As Figure 8 shown, the push frame 800 has an arc-shaped plate structure and is arranged corresponding to the latter section of the rotation trajectory of the discharge valve. When the discharge valve rotates to the position of the push frame, as it rotates along the rotation trajectory from the inlet end, it gradually presses and opens the press head of the discharge valve. Further, preferably, the number of material grooves is 4, and the discharge pipe is arranged at the bottom of one end of the material groove away from the rotation center. The length of the push frame is 1 / 4 of the circumference of the rotation trajectory of the discharge valve. The shape of the push frame is not a completely regular concentric arc structure. The distance between its front end and the center of the material tray is larger than the radius of the rotation trajectory of the press head of the discharge valve. The push frame deviates and approaches the center of the material tray along the rotation trajectory direction, ensuring that at least when it reaches the end position, the discharge valve is in a fully open state. Preferably, it is in a fully open state when it moves to the middle position and remains in this state until it reaches the end position, ensuring complete discharge. The end of the press head of the discharge valve has an outwardly convex arc-shaped structure, which can better form a sliding connection with the push frame to effectively press and open. The discharge valve is a common push-button type switch valve structure. After the external force is removed, it can bounce back to the closed state, which means it is only in the open state within the range of the push frame. The overall design can use the rotation action of the material tray to open the corresponding discharge valve and completely discharge the materials, without the need to design additional electric drive components, reducing costs and also reducing the electrical components inside the pool bin, improving the operation safety.

[0049] Further, the feeding device is a metering feeder, and there are three in total, which are respectively arranged corresponding to the other three material grooves except the discharging part. Starting from injecting wastewater into the material grooves, they are arranged in sequence along the rotation direction of the material tray. When the material tray rotates at a fixed point, the corresponding feeding device quantitatively feeds the corresponding medicament. During this action, the jet pipes continuously jet air outward, enabling the wastewater and the medicament to be fully mixed and ensuring the overall flocculation effect. It should be noted that the metering feeder is a common structural device and can be purchased and used on the market, and will not be elaborated here.

[0050] Further, as Figures 4 to 7As shown in the figure, the tray 620 includes a support pipe 623 and a cover 624. A plurality of material grooves 621 are fixedly arranged on the side wall of the support pipe 623. The material grooves extend along the radial direction of the support pipe, and the plurality of material grooves 621 are circumferentially arrayed around the axis of the support pipe 623. The bottom end of the support pipe 623 is sealed, and a shaft bar 625 is fixedly arranged at the center of the bottom surface. A pressure ring 626 is fixedly arranged on the side wall of the shaft bar 625. A bracket is installed on the top of the pool bin 210 through bolts. A round hole adapted to the shaft bar is correspondingly arranged at the center of the bracket. The shaft bar is inserted through the round hole, and the pressure ring is connected to the bracket through a plain bearing. The cover 624 is fixedly installed on the top of the support pipe 623 through bolts. A pipe bar 627 is fixedly arranged on the top of the cover 624. The pipe bar rotatably penetrates through the cover of the pool bin, and the pipe bar is connected to the output shaft of the motor through a chain and sprocket drive. Thus, the entire tray is rotatably installed on the top of the pool bin and is in transmission connection with the motor to enable smooth rotation. The push frame is directly welded and fixed on the bracket, and the bracket is installed at the pool bin to complete the required alignment.

[0051] A plurality of gas supply pipes 628 are fixedly arranged on the side wall of the support pipe 623. The two ends of the gas supply pipe respectively penetrate into the material groove and the inside of the support pipe. A manifold 640 is installed inside the support pipe 623. A one-way valve 660 is installed at the connection between the manifold 640 and the gas supply pipe 628. The jet pipe is threadedly connected and matched with the other end of the gas supply pipe. The top end of the manifold 640 passes through the top of the pipe bar 627, and a rotary joint 650 is installed at the top end of the manifold 640 and is connected to an external high-pressure gas source through the rotary joint, completing the construction of the gas supply pipeline to ensure that the rotation and gas supply cooperate without interference and effectively prevent the waste water inside the material groove from entering the gas supply pipeline.

[0052] Furthermore, as Figure 9 shown in the figure, a partition 220 is fixedly arranged inside the pool bin 210. The partition is located below the bracket and extends downward. The partition 220 divides the pool bin into a buffer area 230 and an isolation area 240. The buffer area 230 is located on the side close to the neutralization tank 100, and the isolation area is located on the side of the sedimentation tank. A first overflow port 250 communicating with the sedimentation tank 300 is arranged at the top of the side wall of the isolation area 240. A buffer baffle 260 is installed in the buffer area 230. The flocculants and waste water discharged and dropped from the material groove flow to the lower part after contacting the buffer baffle. A first isolation member 270 and a second isolation member 280 are sequentially installed from bottom to top in the isolation area 240. The second isolation member is located below the first overflow port. The first isolation member and the second isolation member are used to block and reduce the floating of the flocculants. Thus, the inside of the pool bin is divided into two areas, namely the buffer area and the isolation area, so that the feeding position is deviated from the discharging position to minimize the impact of the material dropping on the discharging position. Moreover, the first isolation member and the second isolation member are provided to further block the floating of the flocculants and further reduce the flow of the flocculants into the sedimentation tank.

[0053] Further, the buffer baffle is in an arc-shaped structure, with the arc surface protruding upward; the top of the buffer baffle is connected to the top of the partition board, and the bottom bends downward toward the side away from the partition board, and a narrowing opening is formed between the bottom end of the partition board and the inner wall of the pond relative to the partition board; an arc-shaped buffer surface is provided to minimize the impact of the wastewater falling in the trough, reduce the disturbance of the wastewater in the pond, and further reduce the situation of flocs floating up.

[0054] Further, the first isolation member 270 includes two relatively arranged first support plates 271, and a plurality of first rack plates 272 are fixedly installed between the two first support plates 271. The first rack plates 272 are inclined, and the plurality of first rack plates are evenly spaced; it can not only maintain a sufficient channel to ensure the flow of wastewater, but also block the floating flocs, and does not affect some of the flocs that have floated up and settle back to the bottom of the pond.

[0055] Further, as Figure 10 , Figure 11 shown, the second isolation member 280 includes two relatively arranged second support plates 281, and a second rack plate 282, two third rack plates 283 and a plurality of fourth rack plates 284 are fixedly installed between the two second support plates 281; the second rack plate 282 is in a U-shaped structure and is fixedly installed at the bottom of the second support plate; the two third rack plates are correspondingly arranged on the inner side near the top of both sides of the second rack plate, and a channel 285 is formed between the third rack plate 283 and the second rack plate 282; the top of the third rack plate bends toward the side away from the center of the second isolation member and abuts against the partition board or the inner wall of the pond. The bent part of the third rack plate 283 is higher than the top end of the second rack plate 282, forming a second overflow port 286; this design can make the second isolation member form a narrowing channel upward at both sides, further limiting the movement track of the flocs. The second overflow port is arranged at the top position of the channel. Combining with minimizing the disturbance of the wastewater in the previous section, the flocs naturally do not have enough force to float up, and thus the situation of the flocs passing through the second overflow port and entering the downstream link is minimized;

[0056] A plurality of fourth rack plates 284 are arranged in the interval area at the bottom of the two third rack plates 283. The fourth rack plates 284 are inclined, and the plurality of fourth rack plates are evenly spaced; this design can strengthen the structural strength of the second isolation member on the one hand, and further strengthen the blocking effect on the other hand, further preventing the flocs from flowing to the next link; a slag discharge port 287 is provided at the bottom of the second support plate 281 corresponding to the second rack plate 282 on one side, and a slag discharge pipe is correspondingly connected to the side wall of the pond. A discharge valve is installed on the slag discharge pipe to discharge the sediment settled at the bottom of the second rack plate.

[0057] The present invention also provides a use method of a sewage treatment device for waste battery recycling, including the following steps:

[0058] S1, the wastewater after being filtered out of large debris enters the neutralization tank and is neutralized and adjusted in the neutralization tank; a feeding device is installed on the top of the neutralization tank to feed the neutralization agent to neutralize the wastewater;

[0059] S2, the wastewater enters the flocculation tank to react, produce flocs, and undergo preliminary separation and precipitation;

[0060] S3, the wastewater enters the sedimentation tank for secondary sedimentation to separate impurities;

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

[0062] S5, the wastewater enters the membrane treatment tank for further filtration to intercept small molecular particles; the water quality is tested and the liquid that meets the standards is discharged;

[0063] Among them, in step S2, 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 put into the corresponding trough; the input port of the pumping pump is connected to the bottom of the neutralization tank through a first water pipe, and the output port of the pumping pump is connected to a second water pipe, which runs through the top of the tank and is arranged above the corresponding trough; a shut-off valve and a flow meter are installed on the second water pipe to achieve quantitative wastewater delivery, batch processing, improve work efficiency, and improve the quality of the neutralization reaction;

[0065] B2, the motor drives the material tray to rotate at a preset angle, and the material trough rotates and rotates at a fixed point; the corresponding feeding device is started, and the corresponding reagent is quantitatively fed into the material trough; the external high-pressure air source is continuously supplied, and the air is sprayed outward through the air jet pipe to fully mix the wastewater and the reagent inside the material trough;

[0066] B3, when the trough rotates and swings to the range of the push frame, the pressure head of the discharge valve slides against the inner arc surface of the push frame, forming a press-to-open action, causing the flocculants and wastewater inside the trough to fall off;

[0067] B4, flocculants and wastewater fall down and slide along the buffer baffle and sink to the bottom of the tank;

[0068] B5. The continuous accumulation and replenishment of wastewater will inevitably cause disturbance, causing part of the flocs to float upward with the floating flocs, but most of them are blocked by the first isolation piece; a small part of the flocs continue to rise, and only when they rise to the second overflow port will they enter the alley, further reducing the flocs entering the downstream section; the third frame plate can further block the flocs, causing the flocs that move to this position to settle at the bottom of the second frame plate; a very small number of flocs enter the sedimentation tank through the first overflow port along with the wastewater.

[0069] Among them, it should be noted that the sediment in the flocculation tank and the sedimentation tank needs to be cleaned regularly, including the flocs deposited in the bent and sunken parts of the second shelf plate, to prevent excessive accumulation from affecting the normal wastewater treatment operation and effect.

[0070] The present invention is described by way of preferred embodiments. Those skilled in the art will appreciate that various changes or equivalent substitutions can be made to these features and embodiments without departing from the spirit and scope of the present invention. The present invention is not limited by the specific embodiments disclosed herein, and other embodiments falling within the scope of the claims of this application belong to the scope of protection of the present invention.

Claims

1. A wastewater treatment equipment for recycling used batteries, 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 includes a tank, and a mixing device and multiple feeding devices are installed on the top of the tank; The mixing device includes a plurality of troughs that are adjusted to rotate and rotate, and a plurality of feeding devices are distributed in a circular array around the rotation center of the trough. The sewage in the neutralization tank is pumped to the trough at the feeding position, and the feeding device is used to feed the flocculating agent into the trough after it rotates into place; There is an air jet pipe inside the trough to mix the liquid and medicine inside through air jet bubbling; A push rack is installed inside the tank to open the discharge valve of the material trough after the mixing is completed.

2. The wastewater treatment equipment for recycling used batteries according to claim 1 is characterized by: The mixing device includes a motor, a material tray, and an air jet pipe; The material tray is rotatably installed on the top of the tank and is driven by a motor; The material tray is provided with a plurality of material troughs distributed in an array around the circumference of the rotating center, and an air jet pipe is installed inside each material trough, and the air jet pipe is connected to the manifold, and the manifold is connected to the external high-pressure gas source through a rotating joint; The bottom of the trough is connected to a discharge pipe, on which a discharge valve is installed, and the discharge valve is a press valve structure; The push rack has an arc-shaped plate structure, which corresponds to the rear section of the rotation track of the discharge valve. When the discharge valve rotates to the push rack position, the pressure head of the discharge valve is gradually pressed and opened from the entry end along the rotation track.

3. The wastewater treatment equipment for recycling used batteries according to claim 2 is characterized by: The material tray includes a support tube and a cover head; A plurality of material grooves are fixedly provided on the side wall of the support tube, the material grooves extend in the radial direction of the support tube, and the plurality of material grooves are distributed in a circular array around the axis of the support tube; The bottom end of the support tube is sealed, an axis bar is fixedly provided at the center of the bottom surface, and a pressure ring is fixedly provided on the side wall of the axis bar; A bracket is installed on the top of the tank by bolts. A circular hole matching the shaft bar is arranged at the center of the bracket. The shaft bar is passed through the circular hole. The pressure ring and the bracket are connected by a plane bearing. The cover head is fixed on the top of the support pipe by bolts. A pipe strip is fixed on the top of the cover head. The pipe strip rotates and penetrates the bin cover of the tank bin. The pipe strip is connected to the output shaft of the motor through a chain sprocket transmission. A plurality of gas pipes are fixedly provided on the side wall of the support pipe, and the two ends of the gas pipes are respectively passed through the material trough and the inside of the support pipe; the manifold is installed inside the support pipe, and a one-way valve is installed at the connection between the manifold and the gas pipe, and the jet pipe is threadedly connected to the other end of the gas pipe; the top end of the manifold passes through the top of the pipe strip, and a swivel joint is installed on the top end of the manifold, which is connected to an external high-pressure gas source via the swivel joint.

4. The wastewater treatment equipment for recycling used batteries according to claim 3 is characterized by: A partition is fixedly provided inside the tank, the partition is located below the bracket and extends downward, the partition divides the tank into a buffer zone and an isolation zone, the buffer zone is located on the side close to the neutralization tank, the isolation zone is located on the side of the sedimentation tank, and the top of the side wall of the isolation zone is provided with a first overflow port connected to the sedimentation tank; A buffer baffle is installed in the buffer zone, and the flocculants and wastewater discharged from the trough contact the buffer baffle and flow to the bottom; A first isolating member and a second isolating member are sequentially installed in the isolation zone from bottom to top. The second isolating member is located below the first overflow port. The first isolating member and the second isolating member are used to block and reduce the floating of flocculants.

5. The wastewater treatment equipment for recycling used batteries according to claim 4 is characterized by: The buffer baffle is an arc-shaped structure, and the arc surface is convex upward; The top of the buffer baffle is connected to the top of the partition, and the bottom is bent downward on one side away from the partition, forming a narrow opening between the bottom end of the partition and the inner wall of the pool bin opposite to the partition.

6. The wastewater treatment equipment for recycling used batteries according to claim 4 is characterized by: The first isolating member comprises two first supporting plates arranged opposite to each other, a plurality of first frame plates are fixedly mounted between the two first supporting plates, the first frame plates are arranged obliquely, and the plurality of first frame plates are evenly spaced.

7. The wastewater treatment equipment for recycling used batteries according to claim 6 is characterized by: The second isolation member includes two second support plates arranged opposite to each other, and a second frame plate, two third frame plates and a plurality of fourth frame plates are fixedly mounted between the two second support plates; The second frame plate is in a U-shaped structure and is fixedly mounted on the bottom of the second support plate; Two third frame plates are correspondingly arranged on the inner side of the top of both sides of the second frame plate, and a channel is formed between the third frame plate and the second frame plate; the top of the third frame plate is bent toward the side away from the center of the second isolation member, and is supported on the partition or the inner wall of the tank, and the bent portion of the third frame plate is higher than the top of the second frame plate, forming a second overflow port; A plurality of fourth frame plates are arranged at the bottom spacing area of ​​the two third frame plates, the fourth frame plates are arranged obliquely, and the plurality of fourth frame plates are arranged evenly spaced; A slag discharge port is provided at the bottom of the second support plate corresponding to the second frame plate on one side, and a slag discharge pipe is provided correspondingly on the side wall of the tank bin, and a discharge valve is installed on the slag discharge pipe.

8. A method for using a wastewater treatment device for recycling used batteries, characterized in that: The following steps are involved: S1, the wastewater after being filtered out of large debris enters the neutralization tank and is neutralized and adjusted in the neutralization tank; S2, the wastewater enters the flocculation tank to react, produce flocs, and undergo preliminary separation and precipitation; S3, the wastewater enters the sedimentation tank for secondary sedimentation to separate impurities; S4, the wastewater enters the adsorption tank for adsorption filtration to remove particulate impurities; S5, the wastewater enters the membrane treatment tank for further filtration to intercept small molecular particles; the water quality is tested and the liquid that meets the standards is discharged; Among them, in step S2, more specific steps are as follows: B1, pump the wastewater at the bottom of the neutralization tank to the flocculation tank through a pump and put it into the corresponding trough; B2, the motor drives the material tray to rotate at a preset angle, and the material trough rotates and rotates at a fixed point; the corresponding feeding device is started, and the corresponding reagent is quantitatively fed into the material trough; the external high-pressure air source is continuously supplied, and the air is sprayed outward through the air jet pipe to fully mix the wastewater and the reagent inside the material trough; B3, when the trough rotates and swings to the range of the push frame, the pressure head of the discharge valve slides against the inner arc surface of the push frame, forming a press-to-open action, causing the flocculants and wastewater inside the trough to fall off; B4, flocculants and wastewater fall down and slide along the buffer baffle and sink to the bottom of the tank; B5. The continuous accumulation and replenishment of wastewater will inevitably cause disturbance, causing part of the flocs to float upward with the floating flocs, but most of them are blocked by the first isolation piece; a small part of the flocs continue to rise, and only when they rise to the second overflow port will they enter the alley, further reducing the flocs entering the downstream section; the third frame plate can further block the flocs, causing the flocs that move to this position to settle at the bottom of the second frame plate; a very small number of flocs enter the sedimentation tank through the first overflow port along with the wastewater.

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