CN220926392U - Electrolyte wastewater treatment device for recycling waste lithium batteries - Google Patents
Electrolyte wastewater treatment device for recycling waste lithium batteries Download PDFInfo
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- CN220926392U CN220926392U CN202321622054.2U CN202321622054U CN220926392U CN 220926392 U CN220926392 U CN 220926392U CN 202321622054 U CN202321622054 U CN 202321622054U CN 220926392 U CN220926392 U CN 220926392U
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- 239000003792 electrolyte Substances 0.000 title claims abstract description 40
- 238000004064 recycling Methods 0.000 title claims abstract description 32
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 title claims abstract description 29
- 229910052744 lithium Inorganic materials 0.000 title claims abstract description 29
- 239000002699 waste material Substances 0.000 title claims abstract description 28
- 238000004065 wastewater treatment Methods 0.000 title claims abstract description 21
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 51
- 239000002351 wastewater Substances 0.000 claims abstract description 49
- 239000007789 gas Substances 0.000 claims abstract description 47
- 238000006243 chemical reaction Methods 0.000 claims abstract description 30
- 238000000034 method Methods 0.000 claims abstract description 23
- 230000008569 process Effects 0.000 claims abstract description 20
- 239000002912 waste gas Substances 0.000 claims abstract description 15
- 238000011084 recovery Methods 0.000 claims abstract description 13
- 238000005868 electrolysis reaction Methods 0.000 claims abstract description 10
- 238000006555 catalytic reaction Methods 0.000 claims abstract description 6
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 24
- 229910052802 copper Inorganic materials 0.000 claims description 24
- 239000010949 copper Substances 0.000 claims description 24
- 239000012528 membrane Substances 0.000 claims description 16
- 238000001914 filtration Methods 0.000 claims description 11
- 238000005273 aeration Methods 0.000 claims description 10
- 238000006731 degradation reaction Methods 0.000 abstract description 9
- 230000015556 catabolic process Effects 0.000 abstract description 7
- 239000003921 oil Substances 0.000 description 7
- -1 nascent hydrogen ions Chemical class 0.000 description 6
- 238000001704 evaporation Methods 0.000 description 5
- 230000008020 evaporation Effects 0.000 description 5
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 4
- 230000003197 catalytic effect Effects 0.000 description 4
- 229910000041 hydrogen chloride Inorganic materials 0.000 description 4
- IXCSERBJSXMMFS-UHFFFAOYSA-N hydrogen chloride Substances Cl.Cl IXCSERBJSXMMFS-UHFFFAOYSA-N 0.000 description 4
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 4
- 239000001301 oxygen Substances 0.000 description 4
- 229910052760 oxygen Inorganic materials 0.000 description 4
- 239000002253 acid Substances 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 3
- 230000000903 blocking effect Effects 0.000 description 3
- 239000001257 hydrogen Substances 0.000 description 3
- 229910052739 hydrogen Inorganic materials 0.000 description 3
- 239000012535 impurity Substances 0.000 description 3
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 2
- 230000009471 action Effects 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 239000013043 chemical agent Substances 0.000 description 2
- 239000003638 chemical reducing agent Substances 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 230000000593 degrading effect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 239000003344 environmental pollutant Substances 0.000 description 2
- 238000005187 foaming Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
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- 230000003647 oxidation Effects 0.000 description 2
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- 230000002035 prolonged effect Effects 0.000 description 2
- 238000006722 reduction reaction Methods 0.000 description 2
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- 238000005276 aerator Methods 0.000 description 1
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- 230000036541 health Effects 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 229910001416 lithium ion Inorganic materials 0.000 description 1
- 239000002905 metal composite material Substances 0.000 description 1
- 239000010812 mixed waste Substances 0.000 description 1
- 239000005416 organic matter Substances 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 238000006479 redox reaction Methods 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
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- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
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- 230000003827 upregulation Effects 0.000 description 1
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Abstract
The application discloses an electrolyte wastewater treatment device for recycling waste lithium batteries, which comprises an electrocatalytic component, a gas recycling component and an electrocatalytic component, wherein the electrocatalytic component is used for carrying out electrolysis and catalysis on wastewater to be treated; the gas recovery component is communicated with the electrocatalytic component and is used for collecting waste gas generated in the working process of the electrocatalytic component; the electrocatalytic component comprises a shell, wherein a reaction chamber is arranged inside the shell, a cathode plate, an anode plate and a polar plate fixing plate are arranged in the reaction chamber, a water inlet and a water outlet are formed in the shell, polar plate fixing plates are arranged on two opposite sides of the inner wall of the shell, two sides of the cathode plate and the anode plate are fixed on the corresponding polar plate fixing plates, the water inlet is connected with a water inlet pipe, and the water outlet is connected with a water outlet pipe. The device solves the problems of low degradation efficiency and waste gas generation in the prior art.
Description
Technical Field
The application relates to the field of wastewater treatment in the new energy industry, in particular to an electrolyte wastewater treatment device for recycling waste lithium batteries.
Background
The general battery recovery adopts wet recovery, and the wastewater produced in the process mainly has the characteristics of high salt, high COD, high oil content, deep coloring, heavy smell, other unidentified impurities and the like, and according to the environmental protection requirement, the wastewater treatment has two modes of standard discharge and evaporation treatment, and the adoption of the evaporation treatment of the high-salt wastewater is a future trend. The whole battery recycling industry faces the same difficulty whether the discharge is up to standard or the evaporation treatment is carried out: how to treat the waste water with low cost and high efficiency. The existing biochemical method, fenton method and the like have the characteristics of high cost, low efficiency, complex flow and the like. The electrocatalytic method is efficient and pollution-free, but cooling water is needed to be used for cooling in order to prevent the pipeline from being aged and damaged in the degradation process, the degradation efficiency is restrained in the cooling process, and electrons are lost from charged ions to the cathode and the anode in the degradation process, and waste gases such as HCL, H 2、CO2 and CO are generated by oxidation-reduction reaction, so that the health of workers is seriously damaged if people are in a high-concentration mixed gas environment for a long time.
Disclosure of utility model
The application provides an electrolyte wastewater treatment device for recycling waste lithium batteries, and aims to solve the problems of low degradation efficiency and waste gas generation in the background technology.
The technical scheme provided by the application is as follows:
The application provides an electrolyte wastewater treatment device for recycling waste lithium batteries, which comprises an electrocatalytic component and a gas recycling component, wherein the electrocatalytic component is arranged on the lower side of the gas recycling component;
the electrocatalytic component is used for carrying out electrolysis and catalysis on the wastewater to be treated;
The gas recovery component is communicated with the electrocatalytic component and is used for collecting waste gas generated in the working process of the electrocatalytic component and reusing the collected waste gas;
wherein the waste water to be treated is electrolyte waste water for recycling waste lithium batteries.
Further, the electrocatalytic component comprises a shell, a reaction chamber is arranged inside the shell, a cathode plate, an anode plate and a polar plate fixing plate are arranged in the reaction chamber, a water inlet and a water outlet are arranged on the shell, the polar plate fixing plates are arranged on two opposite sides of the inner wall of the shell, two sides of the cathode plate and two sides of the anode plate are fixed on the corresponding polar plate fixing plates, the water inlet is connected with a water inlet pipe, and the water outlet is connected with a water outlet pipe.
Further, an aeration pipe is arranged in the reaction chamber, and an exhaust port and an air inlet are also arranged on the shell;
The gas recovery assembly comprises a gas collecting fan, a first circulating air pipe and a second circulating air pipe, wherein the input end of the gas collecting fan is communicated with the exhaust port through the first circulating air pipe, the output end of the gas collecting fan is communicated with the gas inlet through the second circulating air pipe, and the gas inlet is communicated with the aeration pipe.
Further, a filter is arranged on the water inlet pipe connected with the water inlet.
Further, a plurality of negative plates and a plurality of positive plates are alternately arranged in the reaction chamber at equal intervals along the flowing direction of electrolyte wastewater, one side of each negative plate is connected with one end of one cathode binding post, one side of each positive plate is connected with one end of one anode binding post, the other ends of all cathode binding posts are connected with cathode conductive copper elements, the other ends of all anode binding posts are connected with anode conductive copper elements, all negative plates and positive plates are alternately arranged, the cathode conductive copper elements are connected to the negative end of a power supply, and the anode conductive copper elements are connected to the positive end of the power supply.
Further, 30 cathode plates and 30 anode plates are alternately arranged into a group, 30 cathode plates are connected through the cathode conductive copper elements, 30 anode plates are connected through the anode conductive copper elements, and the gaps between two adjacent electrode plates are 5-10 mm.
Further, a filter membrane supporting plate is arranged in the pipeline of the filter, a filter head is arranged on the filter membrane supporting plate, and a filter membrane is arranged on the surface of the filter head.
Further, the top of the shell is designed to be of an inclined top structure.
Further, the filtration accuracy of the filter membrane was 30. Mu.m.
Further, the cathode plate and the anode plate are powered by a direct current power supply, and the direct current power supply is a low-voltage high-current direct current power supply.
Compared with the prior art, the application has the beneficial effects that:
1. The application provides an electrolyte wastewater treatment device for recycling waste lithium batteries, which solves the problems of low degradation efficiency and waste gas generation existing in the prior art for treating wastewater through an electrocatalytic component and a gas recycling component;
2. According to the application, 30 cathode plates and 30 anode plates are alternately arranged in the reaction chamber, so that the contact area of wastewater and electrode plates in unit time is greatly increased, the generation amount of hydroxyl radicals is maximally increased under the condition of minimum electric energy consumption, the contact area of wastewater and electrode plates in unit time is increased, and the mass transfer efficiency is improved;
3. The device can effectively degrade organic matters in electrolyte wastewater recovered from waste lithium batteries, and can also effectively reduce oil, in the electrolysis process, hydrogen and oxygen are respectively generated at the cathode and the anode of the electrolytic tank due to the action of the electrolytic water, and the two nascent hydrogen ions and the oxygen ions can perform chemical reduction and oxidation on organic pollutants in the wastewater, can generate tiny bubbles, so that oil in the electrolyte wastewater recovered from waste lithium batteries is attached to the bubbles to rise to the liquid level so as to be beneficial to removal; the oil is synchronously reduced while the wastewater is treated, and the wastewater enters the evaporator after being treated, so that the evaporation foaming phenomenon can be reduced, the corrosion risk to a system is reduced, and the service life of equipment is prolonged;
4. In the electrolysis process, a large amount of hydrogen ions in the wastewater are consumed, the concentration of hydroxide ions is continuously increased, the wastewater transits from acidity to alkalinity, the catalytic degradation efficiency is reduced, hydrogen chloride gas generated in the electrolysis process is converted and recycled through suction, the positive regulation effect of reducing the PH of the solution is achieved, the electrolysis catalytic efficiency is improved, and the generation of hydroxyl free radicals is promoted;
5. The device consumes electric energy in the process of degrading organic matters, the electrolytic tank generates a large amount of heat due to the catalytic degradation of the organic matters, the surface temperature of the electrode rises, the thermodynamic movement of molecules can be enhanced, the viscosity of a solution is reduced, the diffusion of hydroxyl free radicals is enhanced, and therefore the oxidizing capacity is improved.
6. The device can effectively treat electrolyte wastewater recovered from waste lithium batteries, has lower process cost compared with other impurity removal processes, uses a low-voltage direct current power supply, and does not need to consume a large amount of chemical agents; the operation is carried out at normal temperature and normal pressure, and the management is simple and convenient; if the concentration of pollutants in the wastewater changes, the stability of the quality of the effluent water can be ensured by adjusting the voltage and the current; the floor area of the treatment device is not large, and the number of the reaction chambers can be increased or decreased according to the water treatment amount.
Drawings
FIG. 1 is a schematic diagram of the overall structure of an embodiment of the present application;
FIG. 2 is a schematic view of the structure of an electrolytic cell in an embodiment of the application;
FIG. 3 is a left side view of FIG. 2;
Fig. 4 is a view from the side of fig. 2.
The reference numerals are as follows:
1. The device comprises a shell, 2, a cathode plate, 3, an anode plate, 4, an electrode plate fixing plate, 5-1, a cathode binding post, 5-2, an anode binding post, 6, a water inlet pipe, 7, a water outlet, 8-1, a cathode conductive copper element, 8-2, an anode conductive copper element, 9, a water inlet, 10, an adjusting nut, 11, a gas collecting fan, 12, a first circulating air pipe, 13, an air inlet, 14, an air outlet, 15, a filter, 16, a reaction chamber, 17, a second circulating air pipe, 18 and an aerator pipe.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present application more clear, the technical solutions of the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. It will be apparent that the embodiments described below are some, but not all, embodiments of the application. The components of the embodiments of the present application generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Accordingly, the following detailed description of the embodiments of the application, taken in conjunction with the accompanying drawings, is intended to represent only selected embodiments of the application, and not to limit the scope of the application as claimed. All other embodiments, which can be made by one of ordinary skill in the art without undue burden on the person of ordinary skill in the art based on the embodiments of the present application, are within the scope of the present application.
In describing embodiments of the present application, it should be noted that, unless explicitly stated and limited otherwise, the terms "disposed," "mounted," "connected," and "connected" should be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically connected, electrically connected or can be communicated with each other; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the embodiments of the present application can be understood by those of ordinary skill in the art according to specific circumstances.
Referring to fig. 1-4, the application provides an electrolyte wastewater treatment device for recycling waste lithium batteries, which comprises an electrocatalytic component and a gas recycling component.
And the electrocatalytic component is used for carrying out electrolysis and catalysis on the wastewater to be treated.
The gas recovery component is communicated with the electrocatalytic component and is used for collecting waste gas generated in the working process of the electrocatalytic component and reusing the collected waste gas.
Wherein the waste water to be treated is electrolyte waste water for recycling waste lithium batteries.
The application solves the problems of low degradation efficiency and waste gas generation existing in the prior art for treating waste water through the electrocatalytic component and the gas recovery component. The exhaust gas contains components such as HCL, H 2、CO2, CO and the like.
Optionally, the electrocatalytic component comprises a casing 1, a reaction chamber 16 is arranged inside the casing 1, an electrolytic tank is arranged in the reaction chamber 16, a cathode plate 2, an anode plate 3 and a polar plate fixing plate 4 are arranged in the electrolytic tank, a water inlet 9 and a water outlet 7 are arranged on the casing 1, polar plate fixing plates 4 are arranged on two opposite sides of the inner wall of the casing 1, two sides of the cathode plate 2 and the anode plate 3 are fixed on the corresponding polar plate fixing plates 4, the water inlet 9 is connected with a water inlet pipe 6, and the water outlet 7 is connected with a water outlet pipe. When the lithium ion battery electrolyte waste water recycling device is used, electrolyte waste water for recycling waste lithium batteries is introduced from the water inlet pipe 6, the electrolyte waste water enters the reaction chamber 16 from the water inlet 9, organic matters in the electrolyte waste water are removed through electrolytic, catalytic and other reactions carried out on the cathode plate 2 and the anode plate 3, and the electrolyte waste water after the reaction is discharged from the water outlet 7.
Optionally, an aeration pipe 18 is further disposed in the reaction chamber 16, and an exhaust port 14 and an intake port 13 are further disposed on the housing 1. An aeration pipe 18 is arranged below the cathode plate 2 and the anode plate 3 in the reaction chamber 16, the aeration pipe 18 is communicated with an air inlet 13 arranged below the shell 1, and a plurality of air holes are arranged on the wall of the aeration pipe. The gas recovery assembly is used for recovering the exhaust gas generated in the reaction chamber 16 and re-introducing the exhaust gas into the reaction chamber 16 through the gas inlet 13 and the vent pipe. It will be appreciated that the exhaust port 14 may be provided through the housing 1 such that the gas recovery assembly may collect exhaust gas generated within the reaction chamber 16 through the exhaust port 14. The water inlet 9, the water outlet 7, the air inlet 13 and the air outlet 14 are all arranged on the shell 1 and are all communicated with the reaction chamber 16 in the shell 1. As for the arrangement, welding, flange connection or screw connection are all possible.
The gas recovery assembly comprises a gas collecting fan 11, a first circulating air pipe 12 and a second circulating air pipe 17, wherein the input end of the gas collecting fan 11 is communicated with an exhaust port 14 through the first circulating air pipe 12, the output end of the gas collecting fan 11 is communicated with an air inlet 13 through the second circulating air pipe 17, and the air inlet 13 is communicated with an aeration pipe 18. The gas collecting fan 11 is communicated with the reaction chamber 16 through the second circulating air pipe 17, the gas inlet 13 and the aeration pipe 18, so that the collected waste gas is input into the reaction chamber 16 again.
Optionally, a filter 15 is arranged on the water inlet pipe 6 connected with the water inlet 9. The filter 15 realizes automatic filtration to the incoming water suspended matters, prevents the scaling of the cathode plate 2 and the anode plate 3, and causes short circuit caused by the scaling blocking between different cathode plates 2 and anode plates 3.
Optionally, a plurality of cathode plates 2 and a plurality of anode plates 3 are alternately arranged in the reaction chamber 16 at equal intervals along the flowing direction of electrolyte wastewater, a cathode binding post 5-1 is welded on each cathode plate 2, an anode binding post 5-2 is welded on each anode plate 3, the tail ends of the cathode binding posts 5-1 are connected in parallel at equal intervals by means of cathode conductive copper elements 8-1, the tail ends of the anode binding posts 5-2 are connected in parallel at equal intervals by means of anode conductive copper elements 8-2, all the cathode plates 2 and the anode plates 3 are alternately arranged at equal intervals, the tail ends of the cathode conductive copper elements 8-1 are connected with a power negative electrode, and the tail ends of the anode conductive copper elements 8-2 are connected with a power positive electrode.
Referring to fig. 2, the cathode plate 2 and the anode plate 3 are assembled into a group of 30 blocks, which are alternately installed in the reaction chamber 16, a part of the cathode binding post 5-1 extends out of the shell to connect the cathode conductive copper element 8-1 with the cathode plate 2, and a part of the anode binding post 5-2 extends out of the shell to connect the anode conductive copper element 8-2 with the anode plate 3. The gaps between adjacent polar plates are all 5-10 mm. In this embodiment, the cathode conductive copper element 8-1 and the anode conductive copper element 8-2 are horizontally arranged on the side surfaces of the electrode plates, the cathode plates 2 and the anode plates 3 fixed on the electrode plate fixing plates 4 are installed in an alternating mode, compared with the traditional electrode, the device adopts a mode of alternately installing a plurality of groups of cathode plates 2 and anode plates 3, the gap between each electrode plate is kept to 6mm, the electric energy consumption is ensured to be minimum, the combination mode greatly improves the generation amount of hydroxyl free radicals, increases the contact area between wastewater and the electrode plates in unit time, improves the mass transfer efficiency, and each group of cathode plates 2 and anode plates 3 in the electrolytic tank can be synchronously assembled and disassembled without influencing the use of other groups of cathode plates 2 and anode plates 3 after adjustment.
Optionally, a filter membrane supporting plate is arranged in the pipeline of the filter 15, a filter head is arranged on the filter membrane supporting plate, and a filter membrane is arranged on the surface of the filter head. Specifically, a stainless steel filtering membrane supporting plate is arranged in a pipeline of the pipeline filter 15, a filtering head is arranged in the filtering membrane supporting plate, and a filtering membrane is arranged on the filtering head, so that the filter 15 can automatically filter the incoming water suspended matters, scaling of polar plates is prevented, and short circuit is caused between the polar plates due to the blocking of scaling matters.
Optionally, the housing 1 may be made of PPH material or other materials. The top of the shell 1 is designed into an inclined top structure. The casing 1 adopted by the application is of an inclined top structure, the structure is narrow in top and wide in bottom, so that acid gases such as hydrogen chloride generated in the organic matter electrolysis process can be conveniently concentrated at the top of the casing 1, and the exhaust port 14 is preferably arranged at the top of the casing 1.
Alternatively, the filter membrane has a filtration accuracy of 30. Mu.m. The filter head is provided with a filter membrane with the filtering precision of 30 mu m, the precision can effectively realize faster flow speed and higher flux, automatic filtration is realized on incoming water suspended matters, scaling of the cathode plate 2 and the anode plate 3 is prevented, and short circuit is caused by scaling matters blocking between different cathode plates 2 and anode plates 3.
The cathode plate 2 and the anode plate 3 are powered by a direct current power supply, and the direct current power supply is a low-voltage high-current direct current power supply. The device can effectively treat the lithium-containing raffinate wastewater, has lower process cost compared with other impurity removal processes, uses a low-voltage direct current power supply, and does not need to consume a large amount of chemical agents; the operation is carried out at normal temperature and normal pressure, and the management is simple and convenient; if the concentration of pollutants in the wastewater changes, the stability of the quality of the effluent water can be ensured by adjusting the voltage and the current; and the floor area of the treatment device is not large, and the treatment device can be assembled or disassembled according to the water treatment amount.
Referring to fig. 3, in the present embodiment, the cathode terminal 5-1 and the anode terminal 5-2 are connected to the cathode conductive copper element 8-1 and the anode conductive copper element 8-2 respectively through the adjusting nuts 10, so that the device is convenient to assemble or disassemble.
Referring to fig. 1, in this embodiment, each pipe is connected to the port by a flange. Specifically, the water inlet 9 is connected with the pipeline of the filter 15 through a flange, the air outlet 14 is connected with the circulating air pipe 17 through a flange, and the air inlet 13 is connected with the circulating air pipe 12 through a flange.
The device can effectively degrade organic matters in electrolyte wastewater recovered from waste lithium batteries, and can also effectively reduce oil, in the electrolysis process, hydrogen and oxygen are respectively generated at the cathode and the anode of the electrolytic tank due to the action of electrolytic water, and the two nascent hydrogen ions and oxygen ions can perform chemical reduction and oxidation on organic pollutants in the electrolyte wastewater, and can generate tiny bubbles, so that oil in the electrolyte wastewater is attached to the bubbles to rise to the liquid level so as to be beneficial to removal; the oil is synchronously reduced while the wastewater is treated, the wastewater enters the evaporator after being treated, so that the evaporation foaming phenomenon can be reduced, the corrosion risk to a system is reduced, and the service life of equipment is prolonged.
In summary, the application provides an electrolyte wastewater treatment device for recycling waste lithium batteries, which is powered by a low-voltage high-current direct-current power supply, wherein the electrolyte wastewater for recycling waste lithium batteries firstly enters a filter 15, the filter 15 automatically filters suspended matters from water, and the filtered electrolyte wastewater enters a reaction chamber 16 from a water inlet 9, so that electric energy is consumed in the process of degrading organic matters, and a large amount of heat is generated. The cathode plate in the electrolytic tank of the device adopts a titanium plate, the anode plate adopts a metal composite electrode of silicon-based boron-doped diamond coating, the cathode plate 2 and the anode plate 3 are alternately arranged on the anode plate fixing plate 4, electrolyte wastewater passes through the middle of the cathode plate and the anode plate and serves as electrolyte, the two ends of the cathode plate of the electrolytic tank are electrified to generate potential difference, and when the wastewater flows through the electrolytic tank, organic matters are directly oxidized at the anode plate or oxidized and degraded to generate hydroxyl free radicals in the catalysis process, so that the effect of removing the organic matters in the wastewater is achieved. Because acid gases such as hydrogen chloride can be generated in the process of treating wastewater, organic matters or water can be continuously consumed in the electrolytic catalysis process, the alkalinity of the solution can be continuously improved, so that electrolytic balance is achieved, the acid gases such as hydrogen chloride can be recycled to an electrolytic tank for improving the positive reaction rate, the device adopts the shell 1 with a gas collection inclined top structure with narrow upper part and wide lower part, and ensures that mixed waste gas generated by treating wastewater is pumped up together with the gas collection fan 11, the gas collection fan 11 guides the waste gas to the air inlet 13 of the electrolytic tank through the first circulating air pipe 12 and the second circulating air pipe 17, so that the waste gas treatment procedure is avoided, and the recycling of tail gas is realized.
The foregoing is merely illustrative of specific embodiments of the present application, and the scope of the present application is not limited thereto, but any changes or substitutions within the technical scope of the present application should be covered by the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.
Claims (10)
1. An electrolyte wastewater treatment device for recycling waste lithium batteries is characterized in that:
comprises an electrocatalytic component and a gas recovery component;
the electrocatalytic component is used for carrying out electrolysis and catalysis on the wastewater to be treated;
The gas recovery component is communicated with the electrocatalytic component and is used for collecting waste gas generated in the working process of the electrocatalytic component and reusing the collected waste gas;
wherein the waste water to be treated is electrolyte waste water for recycling waste lithium batteries.
2. The electrolyte wastewater treatment device for recycling waste lithium batteries according to claim 1, wherein:
the electrocatalytic component comprises a shell (1), a reaction chamber (16) is arranged inside the shell (1), a cathode plate (2), an anode plate (3) and a polar plate fixing plate (4) are arranged in the reaction chamber (16), a water inlet (9) and a water outlet (7) are arranged on the shell (1), polar plate fixing plates (4) are arranged on two opposite sides of the inner wall of the shell (1), the two sides of the cathode plate (2) and the two sides of the anode plate (3) are fixed on the corresponding polar plate fixing plates (4), the water inlet (9) is connected with a water inlet pipe (6), and the water outlet (7) is connected with a water outlet pipe.
3. The electrolyte wastewater treatment device for recycling waste lithium batteries according to claim 2, wherein:
An aeration pipe (18) is further arranged in the reaction chamber (16), and an exhaust port (14) and an air inlet (13) are further arranged on the shell (1);
The gas recovery assembly comprises a gas collecting fan (11), a first circulating air pipe (12) and a second circulating air pipe (17), wherein the input end of the gas collecting fan (11) is communicated with the exhaust port (14) through the first circulating air pipe (12), the output end of the gas collecting fan (11) is communicated with the gas inlet (13) through the second circulating air pipe (17), and the gas inlet (13) is communicated with the aeration pipe (18).
4. The electrolyte wastewater treatment device for recycling waste lithium batteries according to claim 2, wherein:
A filter (15) is arranged on the water inlet pipe (6) connected with the water inlet (9).
5. The electrolyte wastewater treatment device for recycling waste lithium batteries according to claim 2, wherein:
A plurality of cathode plates (2) and a plurality of anode plates (3) are alternately arranged in the reaction chamber (16) at equal intervals along the flowing direction of electrolyte wastewater, one side of each cathode plate (2) is connected with one end of one cathode binding post (5-1), one side of each anode plate (3) is connected with one end of one anode binding post (5-2), the other ends of all cathode binding posts (5-1) are connected with cathode conductive copper elements (8-1), the other ends of all anode binding posts (5-2) are connected with anode conductive copper elements (8-2), all cathode plates (2) and anode plates (3) are alternately arranged, the cathode conductive copper elements (8-1) are connected to the negative end of a power supply, and the anode conductive copper elements (8-2) are connected to the positive end of the power supply.
6. The electrolyte wastewater treatment device for recycling waste lithium batteries according to claim 5, wherein:
30 cathode plates (2) and 30 anode plates (3) are alternately arranged into a group, 30 cathode plates (2) are connected through cathode conductive copper elements (8-1), 30 anode plates (3) are connected through anode conductive copper elements (8-2), and the gaps between two adjacent electrode plates are 5-10 mm.
7. The electrolyte wastewater treatment device for recycling waste lithium batteries according to claim 4, wherein:
A filter membrane supporting plate is arranged in a pipeline of the filter (15), a filter head is arranged on the filter membrane supporting plate, and a filter membrane is arranged on the surface of the filter head.
8. The electrolyte wastewater treatment device for recycling waste lithium batteries according to any one of claims 3 to 7, wherein:
The top of the shell (1) is designed into an inclined top structure.
9. The electrolyte wastewater treatment device for recycling waste lithium batteries according to claim 7, wherein:
The filtration precision of the filter membrane is 30 μm.
10. The electrolyte wastewater treatment device for recycling waste lithium batteries according to claim 7, wherein:
The cathode plate (2) and the anode plate (3) are powered by a direct current power supply, and the direct current power supply is a low-voltage high-current direct current power supply.
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| CN202321622054.2U CN220926392U (en) | 2023-06-25 | 2023-06-25 | Electrolyte wastewater treatment device for recycling waste lithium batteries |
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