Treatment equipment for oil-containing metal waste liquid

Abstract

The utility model discloses oil-containing metal waste liquid treatment equipment which comprises a metal waste liquid tank body, an activated carbon oil removal device, an activated carbon treatment device and a recovery device, and the activated carbon oil removal device comprises a first pump body, at least one oil removal tank body and activated carbon particles filled in the oil removal tank body; the first pump body is positioned between the metal waste liquid tank body and the oil removal tank body; the activated carbon treatment device comprises an ammonia liquid tank body and a second pump body, ammonia liquid is stored in the ammonia liquid tank body, and the second pump body is used for pumping the ammonia liquid in the ammonia liquid tank body into the oil removal tank body so as to elute activated carbon particles; the recovery device comprises an eluent tank body, a third pump body and a deamination tower, the eluent tank body is connected with the oil removal tank body, the third pump body is located between the eluent tank body and the deamination tower, and an output port of the deamination tower is connected with an inlet of the ammonia liquid tank body. Compared with a traditional acid pickling mode, the method has the advantages that the number of needed treatment devices is small, the occupied area is effectively reduced, and the operation cost is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of wastewater treatment, in particular to a treatment device for oil-containing metal waste liquid. Background Art

[0002] At present, in the process of hydrometallurgy such as battery recycling and mine treatment, the metal waste liquid obtained in the early stage is often accompanied by a certain amount of oil and other organic matter. In order to ensure the qualified rate of the back-end products, the initial metal waste liquid needs to be deoiled. Because activated carbon has the advantages of good adsorption effect and is not easy to introduce new impurities, activated carbon is often used to adsorb oil to achieve the purpose of deoiling. However, while activated carbon adsorbs oil, it also adsorbs metal. Therefore, before the activated carbon in the adsorption saturation state is scrapped, it is necessary to acid wash the activated carbon adsorption to recover the adsorbed metal. However, the acid washing method consumes a large amount of acid, and the acid in the pickling liquid cannot be recovered and reused, resulting in high costs. Utility Model Content

[0003] In order to solve the above technical problems, the utility model provides a treatment device for oil-containing technical waste liquid.

[0004] The present application provides a treatment device for oily metal waste liquid, comprising:

[0005] A metal waste liquid tank body, which is used to store the oily metal waste liquid to be treated;

[0006] An activated carbon deoiling device, comprising a first pump body, at least one deoiling tank body, and activated carbon particles filled in the deoiling tank body, wherein the first pump body is located between the metal waste liquid tank body and the deoiling tank body, and is used to pump the oily metal waste liquid in the metal waste liquid tank body into the deoiling tank body for deoiling;

[0007] An activated carbon treatment device, comprising an ammonia liquid tank body and a second pump body, wherein the ammonia liquid tank body stores ammonia liquid, and the second pump body is used to pump the ammonia liquid in the ammonia liquid tank body into the deoiling tank body to elute the activated carbon particles;

[0008] A recovery device comprises an eluent tank body, a third pump body and a deammoniation tower. The eluent tank body is connected to the oil removal tank body and is used to store the eluent cleaned from the oil removal tank body. The third pump body is located between the eluent tank body and the deammoniation tower and is used to pump the eluent stored in the eluent tank body into the deammoniation tower for deammoniation. The output port of the deammoniation tower is connected to the inlet port of the ammonia liquid tank body so that the nitrogen separated in the deammoniation tower can be passed into the ammonia liquid tank body for recovery and use.

[0009] In one embodiment, it also includes a liquid storage tank body and a first control valve, the outlet of the oil removal tank body is connected to the inlet of the liquid storage tank body through an outflow pipeline, and the first control valve is arranged on the outflow pipeline to control the conduction or closing of the outflow pipeline.

[0010] In one embodiment, a filtering device is further included, and the filtering device includes a fourth pump body and a filter. The fourth pump body is located between the filter and the deamination tower, and is used to pump the liquid in the deamination tower to the filter for filtration.

[0011] In one embodiment, it further includes a second control valve, which is arranged on the connecting pipeline between the deamination tower and the fourth pump body and is used to control the liquid in the deamination tower to flow to the filter.

[0012] In one embodiment, it also includes a drain pipeline, one end of which is connected to the liquid storage tank body and is used to discharge the metal liquid after oil removal in the liquid storage tank body, and a third control valve is provided on the drain pipeline.

[0013] In one embodiment, it also includes a fifth pump body, a first ammonia water delivery pipeline and a second ammonia water delivery pipeline, one end of the first ammonia water delivery pipeline is connected to the outlet of the deammonification tower, the other end of the first ammonia water delivery pipeline is connected to the input end of the fifth pump body, one end of the second ammonia water delivery pipeline is connected to the output end of the fifth pump body, and the other end of the second ammonia water delivery pipeline is connected to the inlet of the ammonia liquid tank body.

[0014] In one embodiment, a fourth control valve and a fifth control valve are respectively disposed on the first ammonia aqueous transport pipeline and the second ammonia aqueous transport pipeline.

[0015] In one embodiment, it also includes an eluent pipeline, one end of which is connected to the outlet of the deoiling tank body, and the other end of which is connected to the inlet of the eluent tank body, and the eluent pipeline is provided with a sixth control valve for controlling the eluent to flow to the eluent tank body.

[0016] In one embodiment, it also includes a circulation pipeline, one end of which is connected to the eluent pipeline, and the other end of which is connected to the inlet of the deoiling tank through an ammonia liquid pipeline, and a seventh control valve is provided on the circulation pipeline.

[0017] In one embodiment, the oil removal tank is provided with three, namely, a first oil removal tank, a second oil removal tank and a third oil removal tank, the first oil removal tank, the second oil removal tank and the third oil removal tank are all filled with activated carbon particles, the inlets of the first oil removal tank, the second oil removal tank and the third oil removal tank are respectively connected to the output end of the first pump body through a first input pipeline, a second input pipeline and a third input pipeline, and an eighth control valve is provided on the first input pipeline, the second input pipeline and the third input pipeline; the outlet of the first oil removal tank is connected to the second input pipeline through a first infusion pipeline, the outlet of the second oil removal tank is connected to the third input pipeline through a second infusion pipeline, the outlet of the third oil removal tank is connected to the first input pipeline through a third infusion pipeline, and a ninth control valve is provided on the first infusion pipeline, the second infusion pipeline and the third infusion pipeline;

[0018] The first infusion pipeline, the second infusion pipeline and the third infusion pipeline are all connected to the outflow pipeline;

[0019] The output pipe of the second pump body is connected to the first input pipeline, the second input pipeline and the third input pipeline through the first ammonia liquid pipeline, the second ammonia liquid pipeline and the third ammonia liquid pipeline respectively, and the first ammonia liquid pipeline, the second ammonia liquid pipeline and the third ammonia liquid pipeline are each provided with a tenth control valve;

[0020] The inlet of the eluent tank is connected to the first infusion pipeline, the second infusion pipeline and the third infusion pipeline through the first eluent pipeline, the second eluent pipeline and the third eluent pipeline respectively, and the first eluent pipeline, the second eluent pipeline and the third eluent pipeline are each provided with an eleventh control valve.

[0021] Compared with the prior art, the above technical solution provided by the embodiment of the present application has the following beneficial effects:

[0022] When the activated carbon particles in the oil removal tank are in a saturated state and need to be replaced, the second pump body is used to pump the ammonia liquid in the ammonia liquid tank into the oil removal tank, so that the ammonia liquid can complex with the metals on the surface and in the gaps of the activated carbon particles, thereby eluting the adsorbed metals, which can effectively reduce the waste of metal resources; at the same time, the third pump body is used to pump the eluent from the eluent tank to the deammoniation tower for deammoniation treatment, and the ammonia water in the deammoniation tower is passed into the ammonia liquid tank for reuse, thereby realizing the recycling of resources. Compared with the traditional acid pickling method, less processing equipment is required, which effectively reduces the floor space and reduces the operating cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1This is a schematic structural diagram of an embodiment of a device for treating oily metal waste liquid in the present application;

[0024] Figure 2 This is a schematic structural diagram of another embodiment of a treatment device for oily metal waste liquid of the present application;

[0025] Figure 3 This is a structural schematic diagram of another embodiment of a treatment device for oily metal waste liquid of the present application;

[0026] Figure 4 It is a structural schematic diagram of another embodiment of a treatment device for oily metal waste liquid of the present application.

[0027] Numbers in the figure:

[0028] 10. Metal waste liquid tank; 20. Activated carbon deoiling device; 21. Deoiling tank; 211. First deoiling tank; 212. Second deoiling tank; 213. Third deoiling tank; 22. First pump; 23. Activated carbon particles; 30. Activated carbon treatment device; 31. Ammonia liquid tank; 32. Second pump; 40. Recovery device; 41. Eluent tank; 42. Third pump; 43. Deammoniation tower; 50. Liquid storage tank; 60. First control valve; 70. Outflow pipeline; 80. Filter device; 81. Fourth pump; 82. Filter; 90. Second control valve; 100. Drain pipeline; 110. Third control valve; 120. Fifth pump; 130. First ammonia water delivery pipeline; 140. Second Ammonia water delivery pipeline; 150, fourth control valve; 160, fifth control valve; 170, eluent pipeline; 180, sixth control valve; 190, circulation pipeline; 200, seventh control valve; 210, first input pipeline; 220, second input pipeline; 230, third input pipeline; 240, eighth control valve; 250, first infusion pipeline; 260, second infusion pipeline; 270, third infusion pipeline; 280, ninth control valve; 290, first ammonia liquid pipeline; 300, second ammonia liquid pipeline; 310, third ammonia liquid pipeline; 320, tenth control valve; 330, first eluent pipeline; 340, second eluent pipeline; 350, third eluent pipeline; 360, eleventh control valve. DETAILED DESCRIPTION

[0029] In order to have a clearer understanding of the technical features, purposes and effects of the present invention, the specific implementation methods of the present invention are now described in detail with reference to the accompanying drawings. In the following description, it should be understood that the directions or positional relationships indicated by "front", "back", "up", "down", "left", "right", "longitudinal", "horizontal", "vertical", "horizontal", "top", "bottom", "inside", "outside", "head", "tail", etc. are based on the directions or positional relationships shown in the accompanying drawings, are constructed and operated in a specific direction, and are only for the convenience of describing the present technical solution, rather than indicating that the device or element referred to must have a specific direction, and therefore cannot be understood as a limitation to the present invention.

[0030] The following is a further detailed description of the specific implementation of the present invention in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0031] Please refer to Figure 1 An embodiment of the present application provides a treatment device for oily metal waste liquid, which includes a metal waste liquid tank body 10, an activated carbon oil removal device 20, an activated carbon treatment device 30 and a recovery device 40.

[0032] Specifically, the metal waste liquid tank body 10 is used to store the oily metal waste liquid to be treated. The activated carbon deoiling device 20 includes a first pump body 22, at least one deoiling tank body 21, and activated carbon particles 23 filled in the deoiling tank body 21. The first pump body 22 is located between the metal waste liquid tank body 10 and the deoiling tank body 21, and is used to pump the oily metal waste liquid in the metal waste liquid tank body 10 into the deoiling tank body 21 for deoiling. The activated carbon treatment device 30 includes an ammonia liquid tank body 31 and a second pump body 32. The ammonia liquid tank body 31 stores ammonia liquid. The second pump body 32 is used to pump the ammonia liquid in the ammonia liquid tank body 31 into the deoiling tank body 21 to elute the activated carbon particles 23. The recovery device 40 includes an eluent tank body 41, a third pump body 42 and a deammonification tower 43. The eluent tank body 41 is connected to the oil removal tank body 21 and is used to store the eluent cleaned from the oil removal tank body 21. The third pump body 42 is located between the eluent tank body 41 and the deammonification tower 43 and is used to pump the eluent stored in the eluent tank body 41 into the deammonification tower 43 for deammonification. The output port of the deammonification tower 43 is connected to the inlet of the ammonia liquid tank body 31 so that the nitrogen separated in the deammonification tower 43 can be passed into the ammonia liquid tank body 31 for recovery and use.

[0033] Exemplarily, the activated carbon particles 23 may be filled in a partial area inside the oil removal tank 21, or the entire interior of the oil removal tank 21 may be filled to form an activated carbon column. The specific filling quantity may be determined according to actual conditions and is not limited thereto.

[0034] Exemplarily, the first pump body 22 is used to provide the power required to deliver the oil-containing metal waste liquid in the metal waste liquid tank body 10 into the oil removal tank body 21. For this purpose, the first pump body 22 can adopt a water pump in the prior art (such as an axial flow pump, a centrifugal pump, etc.). The second pump body 32 is used to provide the power required to deliver the ammonia liquid in the ammonia liquid tank body 31 into the oil removal tank body 21. For this purpose, the second pump body 32 can also adopt a water pump in the prior art (such as an axial flow pump, a centrifugal pump, etc.). The third pump body 42 is used to provide the power required to deliver the eluent in the eluent tank body 41 into the deammonification tower 43. For this purpose, the third pump body 42 can adopt a water pump in the prior art (such as an axial flow pump, a centrifugal pump, etc.).

[0035] It should be noted that the "at least one oil removal tank 21" mentioned above refers to one or more, which can be set according to the oil content in the metal waste liquid. For example, if the oil content in the metal waste liquid is detected to be low, only one oil removal tank 21 can be set for oil removal; if the oil content in the metal waste liquid is detected to be high, three oil storage tanks can be set for oil removal in sequence. However, in order to facilitate understanding of the working principle of the treatment equipment for oily metal waste liquid of the present application, the following embodiments are described by taking only one oil removal tank 21 as an example, but are not limited thereto.

[0036] Example 1

[0037] Please refer to Figure 1 The first pump body 22 is used to pump the waste metal liquid in the waste metal liquid tank body 10 into the de-oiling tank body 21, and the waste metal liquid flows through the carbon column formed by the activated carbon particles 23, so that the activated carbon particles 23 adsorb the oil mixed in the waste metal liquid, and then the de-oiled waste metal liquid flows out of the waste metal liquid tank body 10 to the storage container for storage. When the activated carbon particles 23 in the de-oiling tank body 21 are in an adsorption saturation state and need to be replaced, the second pump body 32 is used to pump the waste metal liquid in the ammonia tank body 31. The ammonia liquid in the oil removal tank 21 is pumped to the activated carbon particles 23 in the oil removal tank 21, so that the adsorbed metals can be eluted, and the eluted liquid will flow into the eluent tank 41, and then the eluent in the eluent tank 41 is pumped into the deammonification tower 43 by the third pump body 42, and the ammonia contained in the eluent is separated, and the separated ammonia water is passed into the ammonia liquid tank 31, thereby realizing the recycling of ammonia and saving costs.

[0038] Exemplarily, since the eluted liquid is stored in the eluent tank 41, it can be pumped to the deamination tower 43 for deamination treatment when there is more eluent stored in the eluent tank 41, or the eluent can be deaminized during the deoiling process. It can be seen that the process of deammoniation and recycling ammonia in the eluent does not affect the deoiling of the metal waste liquid, effectively reducing the time spent on the treatment. It should be noted that the eluent refers to the liquid after the activated carbon particles 23 are treated with ammonia water, and some ammonia will still exist in it. Therefore, after the eluent is treated with the deamination tower 43, part of the ammonia contained can be recovered and reused, which can achieve resource recycling and effectively reduce production costs.

[0039] Based on the above-mentioned technical features, the treatment equipment for oil-containing metal waste liquid, when the activated carbon particles 23 in the oil removal tank body 21 are in a saturated state and need to be replaced, the second pump body 32 is used to pump the ammonia liquid in the ammonia liquid tank body 31 into the oil removal tank body 21, so that the ammonia liquid can complex with the metals on the surface and in the gaps of the activated carbon particles 23, thereby eluting the adsorbed metals, which can effectively reduce the waste of metal resources; at the same time, the third pump body 42 is used to pump the eluent from the eluent tank body 41 to the deammonification tower 43 for deammonification treatment, and the ammonia water in the deammonification tower 43 is passed into the ammonia liquid tank body 31 for reuse, thereby realizing the recycling of resources. Compared with the traditional acid pickling method, less processing equipment is required, which effectively reduces the floor space and reduces the operating cost.

[0040] Please refer to Figure 2 In one embodiment, it also includes a liquid storage tank body 50 and a first control valve 60. The outlet of the oil removal tank body 21 is connected to the inlet of the liquid storage tank body 50 through an outflow pipeline 70. The first control valve 60 is arranged on the outflow pipeline 70 to control the conduction or closing of the outflow pipeline 70.

[0041] Exemplarily, when the metal waste liquid is introduced into the oil removal tank body 21 and adsorbed by the activated carbon particles 23, the first control valve 60 is opened to put the outflow pipe 70 in a conducting state, thereby allowing the metal waste liquid after the oil is removed from the oil removal tank body 21 to flow into the liquid storage tank body 50 through the outflow pipe 70 for storage for subsequent use.

[0042] Please refer to Figure 3 In one embodiment, a filtering device 80 is further included. The filtering device 80 includes a fourth pump body 81 and a filter 82. The fourth pump body 81 is located between the filter 82 and the deamination tower 43, and is used to pump the liquid in the deamination tower 43 to the filter 82 for filtration.

[0043] Exemplarily, since the eluent placed in the eluent tank 41 will separate into ammonia water and a mixed liquid after entering the deamination tower 43 for deamination, in order to facilitate the further recycling of the metal sludge in the mixed liquid, in this embodiment, the mixed liquid in the deamination tower 43 is pumped into the filter 82 through the fourth pump body 81, so that the metal sludge and high-salt wastewater are filtered and separated, thereby realizing the recycling and reuse of the metal sludge.

[0044] In one embodiment, a second control valve 90 is further included. The second control valve 90 is disposed on the connecting pipeline between the deamination tower 43 and the fourth pump body 81 and is used to control the liquid in the deamination tower 43 to flow toward the filter 82 .

[0045] In one embodiment, a drain line 100 is further included, one end of which is connected to the liquid storage tank 50, and is used to discharge the metal liquid after degreasing in the liquid storage tank 50, and a third control valve 110 is provided on the drain line 100. Thus, by opening the third control valve 110, the drain line 100 is in a conducting state, and the metal waste liquid after degreasing stored in the liquid storage tank 50 is discharged for use.

[0046] In one embodiment, it also includes a fifth pump body 120, a first ammonia water delivery pipeline 130 and a second ammonia water delivery pipeline 140, one end of the first ammonia water delivery pipeline 130 is connected to the outlet of the deammonification tower 43, the other end of the first ammonia water delivery pipeline 130 is connected to the input end of the fifth pump body 120, one end of the second ammonia water delivery pipeline 140 is connected to the output end of the fifth pump body 120, and the other end of the second ammonia water delivery pipeline 140 is connected to the inlet of the ammonia liquid tank body 31.

[0047] Exemplarily, the fifth pump body 120 is used to provide the power required to deliver the ammonia water separated in the deamination tower 43 to the ammonia liquid tank body 31. Therefore, the fifth pump body 120 can adopt a water pump in the prior art (such as an axial flow pump, a centrifugal pump, etc.). Under the power of the fifth pump body 120, the ammonia water separated by the deamination tower 43 first flows into the first ammonia water delivery pipeline 130, and then flows through the second ammonia water delivery pipeline 140 into the ammonia liquid tank body 31, so as to realize the recycling of ammonia water, which can effectively reduce production costs.

[0048] In one embodiment, a fourth control valve 150 and a fifth control valve 160 are respectively provided on the first ammonia water delivery pipeline 130 and the second ammonia water delivery pipeline 140. In this way, the fourth control valve 150 and the fifth control valve 160 can be controlled to open according to the liquid level in the ammonia liquid tank 31, and the ammonia water separated in the deammonification tower 43 can be delivered to the ammonia liquid tank 31 to supplement the ammonia water.

[0049] In one embodiment, it also includes an eluent pipeline 170, one end of the eluent pipeline 170 is connected to the outlet of the oil removal tank body 21, and the other end of the eluent pipeline 170 is connected to the inlet of the eluent tank body 41, and the eluent pipeline 170 is provided with a sixth control valve 180 for controlling the eluent to flow to the eluent tank body 41.

[0050] Exemplarily, after ammonia water is introduced into the oil removal tank 21 to elute the activated carbon particles 23, the sixth control valve 180 is opened to put the eluent pipeline 170 in a conducting state, thereby allowing the eluent in the oil removal tank 21 to flow into the eluent pipeline 170 and be discharged to the eluent tank 41 for storage, so that the eluent can be subsequently deammonified.

[0051] In one embodiment, a circulation pipeline 190 is further included, one end of which is connected to the eluent pipeline 170 , and the other end of the circulation pipeline 190 is connected to the inlet of the oil removal tank body 21 through an ammonia liquid pipeline, and a seventh control valve 200 is provided on the circulation pipeline 190 .

[0052] For example, in order to ensure that the metals adsorbed by the activated carbon particles 23 can be completely eluted, it is necessary to repeatedly introduce flowing ammonia water into the deoiling tank 21. To this end, in this embodiment, one end of the circulation pipeline 190 is connected to the eluent pipeline 170, and then the other end of the circulation pipeline 190 is connected to the inlet of the deoiling tank 21 through the ammonia liquid pipeline, and then the seventh control valve 200 is controlled so that the ammonia water introduced into the deoiling tank 21 can cyclically elute the activated carbon particles 23. After a certain number of cycles, the seventh control valve 200 is closed, and the circulation pipeline 190 is in a closed state. At this time, the eluent is passed to the eluent tank 41 for storage, thereby realizing the recycling of ammonia water, which is beneficial to reducing production costs.

[0053] Example 2

[0054] Please refer to Figure 4 The difference between this embodiment and embodiment 1 is that three oil removal tanks 21 are provided.

[0055] Specifically, the three oil removal tanks 21 are respectively a first oil removal tank 211, a second oil removal tank 212 and a third oil removal tank 213, the first oil removal tank 211, the second oil removal tank 212 and the third oil removal tank 213 are filled with activated carbon particles 23, and the inlets of the first oil removal tank 211, the second oil removal tank 212 and the third oil removal tank 213 are connected to the first pump body 210 through the first input pipeline 210, the second input pipeline 220 and the third input pipeline 230 respectively. 2, and the first input pipeline 210, the second input pipeline 220 and the third input pipeline 230 are all provided with an eighth control valve 240; the outlet of the first de-oiling tank 211 is connected to the second input pipeline 220 through the first infusion pipeline 250, the outlet of the second de-oiling tank 212 is connected to the third input pipeline 230 through the second infusion pipeline 260, and the outlet of the third de-oiling tank 213 is connected to the first input pipeline 210 through the third infusion pipeline 270. The first infusion pipeline 250, the second infusion pipeline 260 and the third infusion pipeline 270 are all connected to the outflow pipeline 70, and the first infusion pipeline 250, the second infusion pipeline 260 and the third infusion pipeline 270 are all provided with a ninth control valve 280. The output pipe of the second pump body 32 is connected to the first input pipeline 210, the second input pipeline 220 and the third input pipeline 230 through the first ammonia liquid pipeline 290, the second ammonia liquid pipeline 300 and the third ammonia liquid pipeline 310, respectively, and the first ammonia liquid pipeline 290, the second ammonia liquid pipeline 300 and the third ammonia liquid pipeline 310 are each provided with a tenth control valve 320. The inlet of the eluent tank body 41 is connected to the first infusion pipeline 250, the second infusion pipeline 260 and the third infusion pipeline 270 through the first eluent pipeline 330, the second eluent pipeline 340 and the third eluent pipeline 350, respectively, and the first eluent pipeline 330, the second eluent pipeline 340 and the third eluent pipeline are each provided with an eleventh control valve 360.

[0056] Exemplarily, this embodiment uses three oil removal tanks for use in combination, which can conveniently ensure continuous production operation and will not cause the processing equipment to be unusable due to problems with a certain tank. For example: the third oil removal tank 213 is used as a spare tank. When the metal waste liquid is deoiled, only the first oil removal tank 211 and the second oil removal tank 212 are used to deoil the metal waste liquid. When the activated carbon particles in the first oil removal tank 211 are in an adsorption saturation state, the third oil removal tank 213 is started and used in combination with the second oil removal tank 212. At this time, the first oil removal tank 211 can be desorbed and metal removed, so that the adsorption oil removal process and the desorption metal removal process can be carried out simultaneously, ensuring continuous production and helping to improve production efficiency.

[0057] In addition, by using three oil removal tanks in combination, primary oil removal, secondary oil removal and tertiary oil removal can be performed according to the oil content of the metal waste liquid. The metal liquid after multi-stage oil removal can be directly discharged to the treated liquid storage tank at the rear end, thereby improving the oil removal effect. For example: when it is necessary to deoil the waste metal liquid in the waste metal liquid tank 10, the first pump body 22 is used to pump the waste metal liquid into the first deoiling tank 21 through the first input pipeline 210, so that the activated carbon particles 23 in the first deoiling tank 211 perform primary deoiling on the waste metal liquid, and then the liquid in the first deoiling tank 211 is passed to the second input pipeline 220 through the first infusion pipeline 250, so that the liquid in the first deoiling tank 211 enters the second deoiling tank 212 for secondary deoiling, and then the liquid in the second deoiling tank 212 is passed to the third input pipeline 230 through the second infusion pipeline 260, so that the liquid in the second deoiling tank 212 enters the third deoiling tank 213 for tertiary deoiling, and the deoiled liquid is passed into the liquid storage tank 50 for storage, thereby realizing multi-stage deoiling treatment of the waste metal liquid, ensuring that the oil in the waste metal liquid can be completely removed, and the deoiling effect is better.

[0058] Exemplarily, after the metal waste liquid circulates a certain number of times in the first deoiling tank 211, the second deoiling tank 212 and the third deoiling tank 213, the first control valve 60 is opened to allow the deoiled metal waste liquid to enter the liquid storage tank 50 for storage.

[0059] Exemplarily, after the activated carbon particles 23 in the first oil removal tank 211, the second oil removal tank 212 and the third oil removal tank 213 are in a saturated state, the ammonia water in the ammonia liquid tank 31 is pumped to the first input pipeline 210, the second input pipeline 220 and the third input pipeline 230 under the action of the second pump body 32, and the fifth control valve 160 is opened to allow the ammonia water to enter the first oil removal tank 211, the second oil removal tank 212 and the third oil removal tank 213 to elute the activated carbon particles 23, thereby eluting the metals adsorbed by the activated carbon particles 23 and realizing the recovery and reuse of the metal sludge.

[0060] Exemplarily, after the ammonia water elutes the activated carbon particles 23 in the first oil removal tank 211, the second oil removal tank 212 and the third oil removal tank 213, the ninth control valve 280 is opened, and under the action of the second pump body 32, the activated carbon particles 23 flow into the eluent tank 41 through the first infusion pipeline 250, the second infusion pipeline 260 and the third infusion pipeline 270 for storage, so as to facilitate the subsequent ammonia recovery operation of the eluent in the eluent tank 41.

[0061] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and substitutions can be made without departing from the technical principle of the present invention. These improvements and substitutions should also be regarded as the protection scope of the present invention.

Claims

1. A treatment device for oily metal waste liquid, characterized in that: include: A metal waste liquid tank (10) for storing oily metal waste liquid to be processed; An activated carbon deoiling device (20), comprising a first pump body (22), at least one deoiling tank body (21), and activated carbon particles (23) filled in the deoiling tank body (21), wherein the first pump body (22) is located between the metal waste liquid tank body (10) and the deoiling tank body (21), and is used to pump the oily metal waste liquid in the metal waste liquid tank body (10) into the deoiling tank body (21) for deoiling; An activated carbon treatment device (30) comprises an ammonia liquid tank body (31) and a second pump body (32), wherein the ammonia liquid tank body (31) stores ammonia liquid, and the second pump body (32) is used to pump the ammonia liquid in the ammonia liquid tank body (31) into the oil removal tank body (21) to elute the activated carbon particles (23); A recovery device (40) comprises an eluent tank body (41), a third pump body (42) and a deammoniation tower (43); the eluent tank body (41) is connected to the deoiling tank body (21) and is used to store the eluent cleaned from the deoiling tank body (21); the third pump body (42) is located between the eluent tank body (41) and the deammoniation tower (43) and is used to pump the eluent stored in the eluent tank body (41) into the deammoniation tower (43) for deammoniation; the output port of the deammoniation tower (43) is connected to the inlet port of the ammonia liquid tank body (31) so that the nitrogen separated in the deammoniation tower (43) can be passed into the ammonia liquid tank body (31) for recovery and use.

2. The equipment for treating oily metal waste liquid according to claim 1, characterized in that: It also includes a liquid storage tank body (50) and a first control valve (60), wherein the outlet of the oil removal tank body (21) is connected to the inlet of the liquid storage tank body (50) via an outflow pipeline (70), and the first control valve (60) is arranged on the outflow pipeline (70) and is used to control the opening or closing of the outflow pipeline (70).

3. The processing equipment for oily metal waste liquid according to claim 2, characterized in that: The invention also comprises a filtering device (80), wherein the filtering device (80) comprises a fourth pump body (81) and a filter (82), wherein the fourth pump body (81) is located between the filter (82) and the deamination tower (43), and is used for pumping the liquid in the deamination tower (43) to the filter (82) for filtering.

4. The equipment for treating oily metal waste liquid according to claim 3, characterized in that: It also includes a second control valve (90), which is arranged on the connecting pipeline between the deamination tower (43) and the fourth pump body (81) and is used to control the liquid in the deamination tower (43) to flow to the filter (82).

5. The equipment for treating oily metal waste liquid according to claim 2, characterized in that: It also comprises a liquid discharge pipeline (100), one end of which is connected to the liquid storage tank body (50) and is used to discharge the metal liquid after oil removal in the liquid storage tank body (50), and a third control valve (110) is provided on the liquid discharge pipeline (100).

6. The equipment for treating oily metal waste liquid according to claim 1, characterized in that: It also includes a fifth pump body (120), a first ammonia water delivery pipeline (130) and a second ammonia water delivery pipeline (140), wherein one end of the first ammonia water delivery pipeline (130) is connected to the outlet of the deammonification tower (43), the other end of the first ammonia water delivery pipeline (130) is connected to the input end of the fifth pump body (120), one end of the second ammonia water delivery pipeline (140) is connected to the output end of the fifth pump body (120), and the other end of the second ammonia water delivery pipeline (140) is connected to the inlet of the ammonia liquid tank body (31).

7. The equipment for treating oily metal waste liquid according to claim 6, characterized in that: The first ammonia water delivery pipeline (130) and the second ammonia water delivery pipeline (140) are respectively provided with a fourth control valve (150) and a fifth control valve (160).

8. The equipment for treating oily metal waste liquid according to claim 1, characterized in that: The invention also comprises an eluent pipeline (170), one end of which is connected to the outlet of the deoiling tank (21), and the other end of which is connected to the inlet of the eluent tank (41), and a sixth control valve (180) is provided on the eluent pipeline (170) for controlling the eluent to flow to the eluent tank (41).

9. The equipment for treating oily metal waste liquid according to claim 8, characterized in that: The invention also comprises a circulation pipeline (190), one end of which is connected to the eluent pipeline (170), and the other end of which is connected to the inlet of the deoiling tank body (21) via an ammonia liquid pipeline, and a seventh control valve (200) is provided on the circulation pipeline (190).

10. The equipment for treating oily metal waste liquid according to claim 2, characterized in that: The oil removal tank (21) is provided with three, namely a first oil removal tank (211), a second oil removal tank (212) and a third oil removal tank (213). The first oil removal tank (211), the second oil removal tank (212) and the third oil removal tank (213) are all filled with activated carbon particles (23). The inlets of the first oil removal tank (211), the second oil removal tank (212) and the third oil removal tank (213) are connected to the output end of the first pump body (22) through a first input pipeline (210), a second input pipeline (220) and a third input pipeline (230) respectively. The first input pipeline (210), the second input pipeline (220) and the third input pipeline (230) are connected to the output end of the first pump body (22). An eighth control valve (240) is provided on the first inlet pipeline (220) and the third inlet pipeline (230); the outlet of the first de-oiling tank (211) is connected to the second inlet pipeline (220) via a first inlet pipeline (250), the outlet of the second de-oiling tank (212) is connected to the third inlet pipeline (230) via a second inlet pipeline (260), the outlet of the third de-oiling tank (213) is connected to the first inlet pipeline (210) via a third inlet pipeline (270), and a ninth control valve (280) is provided on the first inlet pipeline (250), the second inlet pipeline (260) and the third inlet pipeline (270); The first infusion pipeline (250), the second infusion pipeline (260) and the third infusion pipeline (270) are all connected to the outflow pipeline (70); The output pipe of the second pump body (32) is connected to the first input pipeline (210), the second input pipeline (220) and the third input pipeline (230) through the first ammonia liquid pipeline (290), the second ammonia liquid pipeline (300) and the third ammonia liquid pipeline (310), respectively, and the first ammonia liquid pipeline (290), the second ammonia liquid pipeline (300) and the third ammonia liquid pipeline (310) are all provided with a tenth control valve (320); The inlet of the eluent tank (41) is connected to the first infusion pipeline (250), the second infusion pipeline (260) and the third infusion pipeline (270) through the first eluent pipeline (330), the second eluent pipeline (340) and the third eluent pipeline (350), respectively, and an eleventh control valve (360) is provided on the first eluent pipeline (330), the second eluent pipeline (340) and the third eluent pipeline (350).

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