Wastewater treatment device in waste lead-acid battery recovery

Abstract

The utility model relates to the technical field of battery recovery wastewater treatment, in particular to a wastewater treatment device in waste lead-acid battery recovery. Comprising a filter, the filter is communicated with a dosing tank, the dosing tank is communicated with a communicating pipe of a filter tank through a water pump, a second filter screen and a first filter screen which are arranged up and down are fixed in the filter tank, the communicating pipe is communicated with the part, below the first filter screen, of the filter tank, and an outlet pipe is communicated with the part, between the first filter screen and the second filter screen, of the filter tank. The communicating pipe is fixedly communicated with a branch pipe, the branch pipe is communicated with the part, above the second filter screen, of the filter tank, the lower end of the filter tank is fixedly communicated with a first calandria, and the part, above the second filter screen, of the filter tank is fixedly communicated with a second calandria. According to the utility model, wastewater in the dosing tank is pumped into the filtering tank, so that the wastewater in the dosing tank can be filtered by using the first filter screen and the second filter screen, and impurities intercepted by the first filter screen and the second filter screen can be conveniently discharged out of the filtering tank.

Description

Technical Field

[0001] The utility model relates to the technical field of battery recycling wastewater treatment, in particular to a wastewater treatment device in the recycling of waste lead-acid batteries. Background Art

[0002] Lead-acid batteries are widely used, powering a wide range of products. Electric bicycles, currently being promoted as smoke-free transportation, are largely powered by lead-acid batteries. The lead-acid battery recycling process typically involves crushing the batteries. The crushed batteries are then used to separate the plastic and recycled lead using water, generating a significant amount of wastewater.

[0003] Patent application number CN201821046403.X discloses a wastewater treatment device for crushing lead-acid batteries. The device comprises a wastewater treatment tank, a purification tank surrounding the tank, and an inlet pipe for introducing wastewater to the bottom of the tank. The wastewater treatment tank is higher than the purification tank. A vertically sliding filter unit is provided within the tank. The filter unit comprises a frame and a filter layer fixed to the frame, with the edges of the frame abutting the sidewalls of the tank. A sedimentation layer is provided above the filter unit. The sedimentation layer comprises a mesh plate fixed to the tank and a layer of sand deposited on the mesh plate. A drive unit is mounted at the bottom of the mesh plate to drive the filter unit in reciprocating motion. A partition is provided within the purification tank, with a gap between the bottom of the partition and the bottom of the tank and the top of the partition higher than the top of the purification tank. As the filter unit moves downward, the water pressure on the filter layer increases, facilitating water passage through the filter layer, thereby improving filtration efficiency. The sediment in the wastewater will settle into the sand layer, and it will be inconvenient to separate the sediment from the sand layer later.

[0004] The patent document with application number CN202010896104.0 discloses a lead-acid battery recycling wastewater treatment device. By setting a first filter grid, a second filter grid, a first fixing seat, a second fixing seat and a spray seat in cooperation, the effect of filtering impurities in the wastewater can be improved; the wastewater is transported to the first treatment tank through the first upper conduit, and the wastewater is sequentially coarsely filtered through the coarse filter mesh in the first filter grid, so that the larger flocs in the wastewater are filtered once by the coarse filter mesh, and then filtered twice through the filter mesh in the second filter grid, so that the smaller flocs and particulate matter in the wastewater are filtered twice, and the filtered wastewater continues to flow downward; a chemical is evenly sprayed into the first treatment tank through several nozzles, and the chemical reacts chemically with the wastewater to generate a precipitate that is insoluble in water, and sinks and accumulates on the receiving net. By combining physical filtration and chemical filtration of the wastewater, the filtering effect of impurities in the wastewater can be effectively improved, solving the problem of poor efficiency of impurity filtration in the wastewater in the existing scheme.

[0005] By using the provided storage net, storage ring, first adsorption block and second adsorption block in combination, the filtered impurities can be processed conveniently and quickly; the first processing tank is opened by the first upper top plate, and the first filter grille and the second filter grille are separated from the inner wall of the first processing tank in turn and cleaned, and the second fixing plate is moved to the side away from the second fixing seat, and the top column is separated from the card slot by rotating the first clamping column and the second clamping column; by pulling the second fixing plate upward, several second adsorption blocks are separated from the first adsorption block, and the storage net is moved up together with the sediment to the outside of the first processing tank and processed, which can effectively improve the efficiency of impurity processing and solve the problem of inconvenient processing of filtered impurities in the existing solution.

[0006] Cleaning impurities trapped by the first and second filter grilles requires opening the first treatment tank. Removing impurities from the collection net requires pre-disassembly of the first and second filter grilles. The collection net and sediment are then moved upwards outside the first treatment tank for disposal. Therefore, cleaning impurities trapped within the first treatment tank requires significant effort. Utility Model Content

[0007] The technical problem to be solved by the present invention is to provide a wastewater treatment device for waste lead-acid battery recycling that is convenient for cleaning impurities in wastewater and can reduce the cost of wastewater treatment. In order to achieve the above-mentioned purpose, the technical solution provided by the present invention is:

[0008] A wastewater treatment device for recycling used lead-acid batteries includes a filter, which is connected to a dosing tank. The dosing tank is connected to a connecting pipe of the filter tank through a water pump. A second filter screen and a first filter screen are fixedly arranged above and below the filter tank. The connecting pipe is connected to the filter tank portion below the first filter screen, and the outlet pipe is connected to the filter tank portion between the first filter screen and the second filter screen. A branch pipe is fixedly connected to the connecting pipe, and the branch pipe is connected to the filter tank portion above the second filter screen. A first valve is installed on the connecting pipe, and a second valve is installed on the branch pipe. The lower end of the filter tank is fixedly connected to a first row of pipes, and the filter tank portion above the second filter screen is fixedly connected to a second row of pipes.

[0009] Specifically, a dosing pipe is fixed in the dosing tank, the upper end of the dosing pipe extends to the outside of the dosing tank, and a plurality of nozzles are fixedly connected to the dosing pipe portion in the dosing tank.

[0010] Specifically, a stirring rod is rotatably provided in the dosing tank, a first motor is fixed to the upper end of the dosing tank, and an output shaft of the first motor is fixedly connected to the stirring rod.

[0011] Specifically, the filter includes a shell, a second motor is fixed to the lower end of the shell, a filter cartridge is detachably fixedly connected to the output shaft of the second motor, a cover is detachably fixedly connected to the upper end of the shell, an inlet pipe is fixed on the cover, and wastewater discharged from the inlet pipe enters the filter cartridge.

[0012] Compared with the prior art, the beneficial effects of the present invention are:

[0013] 1. The utility model can filter the waste water in the dosing tank by using the first filter screen and the second filter screen by pumping the waste water in the dosing tank into the filter tank, and the impurities intercepted by the first filter screen and the second filter screen can be easily discharged from the filter tank.

[0014] 2. Open the first valve and close the second valve. The wastewater is filtered by the first filter in the filter tank and discharged from the outlet pipe. Close the first valve and open the second valve. The wastewater is filtered by the second filter in the filter tank and discharged from the outlet pipe. Open the first outlet pipe and close the outlet pipe. When the impurities in the filter tank below the first filter are discharged, the first filter can also be backwashed.

[0015] 3. After filtering the wastewater with the second filter, open the first valve and the second row of pipes and close the second valve and the outlet pipe. During the process of discharging impurities in the filter tank above the second filter, the second filter can also be backwashed.

[0016] 4. The filter cartridge can rotate at high speed, and when removing impurities in the filter cartridge, the impurities in the filter cartridge can be centrifugally dehydrated. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the present utility model.

[0018] Figure 2 Schematic diagram of the internal structure of the filter.

[0019] The names of the parts in the accompanying drawings are:

[0020] 1 filter

[0021] 2 Dosing tanks

[0022] 3 Dosing tube

[0023] 4 nozzles

[0024] 5. Stirring rod

[0025] 6 First Motor

[0026] 7 Outlet

[0027] 8 filter tank

[0028] 9 Water Pump

[0029] 10 connecting pipe

[0030] 11 branches

[0031] 12 First Valve

[0032] 13 Second valve

[0033] 14 First row of tubes

[0034] 15 Second row of pipes

[0035] 16 First filter

[0036] 17 Second filter

[0037] 101 housing

[0038] 102 filter cartridge

[0039] 103 Second Motor

[0040] 104 Inlet pipe. DETAILED DESCRIPTION

[0041] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0042] Example 1: Reference Figure 1 As shown, a wastewater treatment device for recycling used lead-acid batteries includes a filter 1, which is connected to a dosing tank 2.

[0043] A dosing pipe 3 is fixed within the dosing tank 2. The upper end of the dosing pipe 3 extends outside the dosing tank 2. Multiple nozzles 4 are fixedly connected to the dosing pipe 3 within the dosing tank 2. Flocculants can be added to the dosing tank 2 through the dosing pipe 3. Flocculants can include, but are not limited to, coagulants such as PAC and coagulant aids such as PAM. The flocculants react chemically with the wastewater to form a precipitate that is insoluble in water.

[0044] The multiple nozzles 4 on the dosing pipe 3 can facilitate the dispersion of the flocculant into the wastewater in the dosing tank 2, thereby increasing the mixing rate of the flocculant and the wastewater.

[0045] A stirring rod 5 is rotatably provided in the dosing tank 2. A first motor 6 is fixed to the upper end of the dosing tank 2. The output shaft of the first motor 6 is fixedly connected to the stirring rod 5. When the first motor 6 is started, the stirring rod 5 is driven by the first motor 6 to rotate. During the rotation of the stirring rod 5, the flocculant and the wastewater are mixed more quickly.

[0046] The dosing tank 2 is connected to the connecting pipe 10 of the filter tank 8 through the water pump 9. A second filter screen 17 and a first filter screen 16 are fixedly arranged up and down in the filter tank 8. The connecting pipe 10 is connected to the portion of the filter tank 8 below the first filter screen 16, and the outlet pipe 7 is connected to the portion of the filter tank 8 between the first filter screen 16 and the second filter screen 17. A branch pipe 11 is fixedly connected to the connecting pipe 10, and the branch pipe 11 is connected to the portion of the filter tank 8 above the second filter screen 17. A first valve 12 is installed on the connecting pipe 10, and a second valve 13 is installed on the branch pipe 11. The lower end of the filter tank 8 is fixedly connected to a first row of pipes 14, and the portion of the filter tank 8 above the second filter screen 17 is fixedly connected to a second row of pipes 15. The first row of pipes 14 and the second row of pipes 15 are connected to the filter press.

[0047] The settled wastewater flows through the filter 1 and enters the dosing tank 2. The filter 1 can filter and intercept plastics in the wastewater. Flocculant is added to the dosing tank 2 through the dosing pipe 3. The first motor 6 is started to drive the stirring rod 5 to rotate and fully mix the flocculant with the wastewater in the dosing tank 2.

[0048] Open the first valve 12 and the outlet pipe 7, close the second valve 13, the first row of pipes 14, and the second row of pipes 15, start the water pump 9 to pump the wastewater in the dosing tank 2 into the filter tank 8. The wastewater enters the filter tank 8 below the first filter screen 16 through the connecting pipe 10. The first filter screen 16 can filter the wastewater, and the wastewater filtered by the first filter screen 16 is discharged through the outlet pipe 7. The impurities intercepted by the first filter screen 16 are located in the filter tank 8 below the first filter screen 16.

[0049] When first filter screen 16 becomes clogged, first valve 12 is closed and second valve 13 is opened, keeping first and second pipes 14 and 15 closed. Wastewater is filtered by second filter screen 17 in filter tank 8 and discharged through outlet pipe 7. Impurities trapped by second filter screen 17 are located in the portion of filter tank 8 above second filter screen 17.

[0050] Then, the first row of pipes 14 is opened and the outlet pipe 7 is closed. Impurities in the filter tank 8 below the first filter screen 16 are discharged through the first row of pipes 14. Simultaneously, the wastewater filtered by the second filter screen 17 backwashes the first filter screen 16. The wastewater and impurities discharged from the first row of pipes 14 are then fed into the filter press for filtration. After backwashing the first filter screen 16, the first row of pipes 14 is closed and the outlet pipe 7 is opened. The wastewater filtered by the second filter screen 17 is then discharged through the outlet pipe 7.

[0051] If second filter screen 17 becomes clogged, first valve 12 and second pipe 15 are opened, while second valve 13 and outlet pipe 7 are closed. As impurities in filter tank 8 above second filter screen 17 are discharged through second pipe 15, the wastewater filtered by first filter screen 16 also backwashes second filter screen 17. The wastewater and impurities discharged from second pipe 15 are then fed into a filter press for filtration. After backwashing second filter screen 17, second pipe 15 is closed and outlet pipe 7 is opened, allowing the wastewater filtered by first filter screen 16 to be discharged again through outlet pipe 7.

[0052] Example 2: Based on Example 1, refer to Figure 2 As shown, the filter 1 includes a shell 101, a second motor 103 is fixed to the lower end of the shell 101, a filter cartridge 102 is detachably fixedly connected to the output shaft of the second motor 103, a cover plate is detachably fixedly connected to the upper end of the shell 101, an inlet pipe 104 is fixed on the cover plate, and wastewater discharged from the inlet pipe 104 enters the filter cartridge 102.

[0053] The wastewater entering the housing 101 from the inlet pipe 104 enters the filter cartridge 102, which can intercept the plastic in the wastewater. The wastewater with the plastic removed enters the dosing tank 2.

[0054] When the plastic in the filter cartridge 102 needs to be removed, the second motor 103 is started to rotate the filter cartridge 102 at a high speed in the housing 101 , thereby centrifugally dehydrating the plastic in the filter cartridge 102 .

[0055] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A wastewater treatment device for recycling waste lead-acid batteries, comprising a filter (1), the filter (1) being connected to a dosing tank (2), and characterized in that: The dosing tank (2) is connected to the connecting pipe (10) of the filter tank (8) through the water pump (9). A second filter screen (17) and a first filter screen (16) are fixedly arranged in the filter tank (8). The connecting pipe (10) is connected to the portion of the filter tank (8) below the first filter screen (16). The outlet pipe (7) is connected to the portion of the filter tank (8) between the first filter screen (16) and the second filter screen (17). A branch pipe (11) is fixedly connected to the connecting pipe (10). The branch pipe (11) is connected to the portion of the filter tank (8) above the second filter screen (17). A first valve (12) is installed on the connecting pipe (10). A second valve (13) is installed on the branch pipe (11). The lower end of the filter tank (8) is fixedly connected to a first row of pipes (14). The portion of the filter tank (8) above the second filter screen (17) is fixedly connected to a second row of pipes (15).

2. The wastewater treatment device for recycling used lead-acid batteries according to claim 1, characterized in that: The first row of pipes (14) and the second row of pipes (15) are in communication with the filter press.

3. The wastewater treatment device for recycling used lead-acid batteries according to claim 1, characterized in that: A dosing pipe (3) is fixed in the dosing tank (2), the upper end of the dosing pipe (3) extends to the outside of the dosing tank (2), and a plurality of nozzles (4) are fixedly connected to the dosing pipe (3) in the dosing tank (2).

4. The wastewater treatment device for recycling used lead-acid batteries according to claim 1, characterized in that: A stirring rod (5) is rotatably provided in the dosing tank (2), a first motor (6) is fixed to the upper end of the dosing tank (2), and an output shaft of the first motor (6) is fixedly connected to the stirring rod (5).

5. The wastewater treatment device for recycling used lead-acid batteries according to claim 1, characterized in that: The filter (1) comprises a housing (101), a second motor (103) being fixed to the lower end of the housing (101), a filter cartridge (102) being detachably fixedly connected to the output shaft of the second motor (103), a cover plate being detachably fixedly connected to the upper end of the housing (101), an inlet pipe (104) being fixed to the cover plate, and wastewater discharged from the inlet pipe (104) entering the filter cartridge (102).

Images