CN217555997U - Waste lithium battery recycling wastewater treatment system - Google Patents
Waste lithium battery recycling wastewater treatment system Download PDFInfo
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- CN217555997U CN217555997U CN202221359804.7U CN202221359804U CN217555997U CN 217555997 U CN217555997 U CN 217555997U CN 202221359804 U CN202221359804 U CN 202221359804U CN 217555997 U CN217555997 U CN 217555997U
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Abstract
The utility model relates to a lithium cell recycle technical field provides a processing system of waste lithium cell recovery waste water. The system comprises a separation device, a filtering membrane device, a concentration device, a drying device, a purification device and the like. The utility model provides a processing system for waste lithium battery recovery wastewater, which separates the wastewater in two steps through a separation device and a filtering membrane device, recovers the organic phase in the wastewater, and realizes the recycling of high-value resources; the water phase is treated by a concentration device and a drying device to obtain a pure sulfate product, and pure water in the system can be recovered by a purification device. Through the utility model discloses a processing system of waste lithium battery recovery waste water handles waste lithium battery, has realized the high-efficient recycle of resource, reduces and reaches the zero release even, reduces waste lithium battery waste water treatment cost.
Description
Technical Field
The utility model relates to a lithium cell recycle technical field especially relates to a processing system of waste lithium cell recovery waste water.
Background
With the continuous development of new energy industry and the large use of ion batteries, a large number of retired waste lithium batteries are generated, and the recycling industry of the waste lithium batteries is developed. At present, the recycling of waste lithium batteries is mainly based on a physical-fire method and wet method combined recovery process, and a large amount of lithium battery recovery wastewater such as raffinate is generated at the tail end of the process. Wherein the wastewater is recovered by using alkaline metal ions (including Na) + 、NH 4 + 、Mg 2+ Etc.), SO 4 2- And part of acidic high-salt wastewater mainly containing kerosene of an extracting agent, wherein the wastewater treatment difficulty is large, and the direct discharge of the wastewater (particularly the kerosene and the extracting agent in the wastewater) can cause serious damage to the environment.
At present, the treatment method of oily wastewater in waste lithium battery recovery wastewater mainly comprises the following steps:
1) Activated carbon adsorption and evaporative crystallization. After the waste lithium batteries are recycled by precious metal resources, organic matters containing oil, such as kerosene, an extracting agent and the like, in the waste water in the extraction raffinate can be removed by activated carbon adsorption; directly evaporating and crystallizing the extracted waste water to obtain the sulfate. The method increases the process cost by the activated regeneration of the activated carbon and the treatment of the solid waste generated in the activation process, and the absorbed extractant and oil can not be recycled.
2) Membrane separation + evaporative crystallization. The method comprises the steps of separating oily wastewater and salt-containing wastewater by using a membrane method, and evaporating and crystallizing the salt-containing wastewater to obtain sulfate. The membrane method in the method is used for separating oil content and salt-containing wastewater, so that the blockage and pollution of the membrane are easily caused, the cleaning of the membrane is difficult, and the operation cost is increased.
In conclusion, the above two methods have the defects of difficult and incomplete wastewater treatment and recovery and higher cost.
SUMMERY OF THE UTILITY MODEL
The utility model provides a processing system of waste lithium battery recovery waste water for solve among the prior art waste lithium battery waste water recovery difficulty, thoroughly and retrieve defect with high costs.
The utility model provides a processing system of waste lithium battery recovery waste water, include:
a separation device for separating the wastewater into an aqueous phase A and an organic phase A;
the water phase A is introduced into the filtering membrane device, and the filtering membrane device is used for separating the water phase A into a water phase B and an organic phase B;
the water phase B is introduced into the concentration device and connected with the concentration device, and the concentration device is used for separating the water phase B into condensed water C, concentrated solution C and a crystallization product;
the drying device is used for drying the crystallized product to obtain a product A;
and the condensed water C is introduced into the purification device, and the purification device is used for adsorbing the condensed water C to obtain pure water.
According to the utility model provides a pair of waste lithium battery retrieves processing system of waste water still includes:
and the concentrated solution C is introduced into the advanced oxidation device, and the advanced oxidation device is used for carrying out oxidation treatment on the concentrated solution, mixing the concentrated solution with the water phase A and introducing the mixed solution into the filtering membrane device.
According to the utility model provides a pair of processing system of waste lithium cell recovery waste water still includes the comdenstion water storage tank, the comdenstion water storage tank connect in the enrichment facility with between the purifier, be used for storing comdenstion water C.
According to the utility model provides a pair of processing system of waste lithium battery recovery waste water, separator includes the oil interceptor.
According to the utility model provides a pair of processing system of waste lithium battery recovery waste water, drying device includes centrifugal drying device.
According to the utility model provides a pair of processing system of waste lithium battery recovery waste water, purifier includes activated carbon adsorption device.
According to the utility model provides a pair of processing system of waste lithium battery recovery waste water, the inside ceramic membrane and/or the oleophobic membrane of being equipped with of filtration membrane device.
According to the utility model provides a pair of processing system of waste lithium battery recovery waste water, enrichment facility includes MVR evaporation plant.
According to the utility model provides a pair of processing system of waste lithium battery recovery waste water, MVR evaporation plant includes one of them of single-effect, economic benefits and social benefits, falling liquid film, rising membrane and compulsory MVR evaporation plant.
According to the utility model provides a pair of processing system of waste lithium battery recovery waste water, enrichment facility includes one of them of reverse osmosis unit, multiple-effect evaporation plant and electrodialysis device.
The utility model provides a processing system for waste lithium battery recovery wastewater, which separates the wastewater in two steps through a separation device and a filtering membrane device, recovers the organic phase in the wastewater, and realizes the recycling of high-value resources; the water phase is treated by a concentration device and a drying device to obtain a pure sulfate product, and pure water in the system can be recovered by a purification device. Through the utility model discloses a processing system that waste lithium cell retrieved waste water handles waste lithium cell, has realized the high-efficient recycle of resource, reduces and reaches the zero release even, reduces waste lithium cell waste water treatment cost.
Drawings
In order to more clearly illustrate the technical solutions of the present invention or the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is a schematic structural diagram of a waste lithium battery recycling wastewater treatment system provided by the present invention;
reference numerals are as follows:
1: a stock solution tank; 2: an oil separation tank; 3: a filtration membrane device; 4: an MVR evaporation device; 5: a centrifugal drying device; 6: a condensed water storage tank; 7: an activated carbon adsorption unit; 8: an advanced oxidation device.
Detailed Description
To make the objects, technical solutions and advantages of the present invention clearer, the drawings in the present invention will be combined to clearly and completely describe the technical solutions of the present invention, and obviously, the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by a person skilled in the art without making creative efforts belong to the protection scope of the present invention.
The utility model discloses a waste lithium battery recycling wastewater treatment system is described below with reference to fig. 1. The processing system comprises: a separation device, a filtration membrane device 3, a concentration device, a drying device, and a purification device.
Wherein the separation device is used for separating the wastewater into a water phase A and an organic phase A; the water phase A is introduced into a filtering membrane device 3, and the filtering membrane device 3 is used for separating the water phase A into a water phase B and an organic phase B; the concentration device can adopt an MVR evaporation device 4, the water phase B is connected with the MVR evaporation device 4, and the MVR evaporation device 4 is used for separating the water phase B into condensed water C, concentrated solution C and crystallized products; introducing the crystallized product into a drying device, wherein the drying device is used for drying the crystallized product to obtain a product A; and the condensed water C is introduced into a purifying device, and the purifying device is used for adsorbing the condensed water C to obtain pure water.
Particularly, the separation device of the utility model can adopt an oil separation tank 2 which is communicated with a raw liquid tank 1 filled with waste water and is used for separating the waste water into a water phase A and an organic phase A, and the separated organic phase A is recycled; the separated aqueous phase a is filtered by the filtration membrane apparatus 3, and the aqueous phase a is further separated into an aqueous phase B and an organic phase B, and the separated organic phase B and the separated organic phase a are recovered and reused. The wastewater is separated twice through the oil separation tank 2 and the filtering membrane device 3, the separated organic phase (mainly sulfonated kerosene containing an extracting agent) is recycled, the recycling of high-value resources is realized, the separated water phase is introduced into the MVR evaporation device 4 for evaporation and crystallization, and the crystallized product is further dried through a drying device, so that a relatively pure sulfate product is obtained; the condensed water C obtained by the MVR evaporation device 4 can reach the standard of recycling after being adsorbed; and the concentrated solution C generated by the MVR evaporation device 4 can be introduced into the filtering membrane device 3 after being oxidized, so that the soluble organic matters in the concentrated solution can be decomposed.
The utility model provides a processing system for waste lithium battery recovery wastewater, which separates the wastewater by two steps through a separation device and a filtering membrane device 3, recovers the organic phase in the wastewater, and realizes the recycling of high-value resources; the water phase is treated by the MVR evaporation device 4 and the drying device to obtain a pure sulfate product, and the pure water in the system can be recovered by the purification device, so that the pure water can be utilized in the preparation of the medicament of the system. Through the utility model discloses a processing system of waste lithium battery recovery waste water handles waste lithium battery, has realized the high-efficient recycle of resource, reduces and reaches the zero release even, reduces waste lithium battery waste water treatment cost.
The utility model discloses an in one of them embodiment, this processing system of waste lithium battery recovery waste water still includes: and the advanced oxidation device 8 is used for oxidizing the concentrated solution, mixing the concentrated solution with the water phase A and introducing the mixed solution into the filtering membrane device 3. In this embodiment, the concentrated solution after the MVR evaporation needs to be subjected to advanced oxidation treatment, and then mixed with water and pumped into the filtering membrane device 3, so that the organic matter content of the inlet water is reduced, the concentrated solution of the membrane is mainly an organic phase, and the concentrated solution C is mineralized or decomposed by the advanced oxidation device 8, so that the soluble organic matter in the concentrated solution C is removed, and zero discharge of the system is realized; in addition, the wastewater is subjected to advanced oxidation treatment, and the load of the filtering membrane device 3 is also reduced. Preferably, the advanced oxidation apparatus 8 adds an oxidizing agent mainly composed of persulfate, hydrogen peroxide, ozone oxidation, or the like, does not introduce new impurities, and has a small addition amount and a low running cost. Of course, oxidation means such as photochemical oxidation, catalytic wet oxidation, sonochemical oxidation, ozone oxidation, or electrochemical oxidation may be used without introducing new impurities.
The utility model discloses a wherein one of them embodiment, this processing system of waste lithium cell recovery waste water still includes comdenstion water storage tank 6, and comdenstion water storage tank 6 is connected between MVR evaporation plant 4 and purifier for store comdenstion water C. Through set up comdenstion water storage tank 6 between MVR evaporation plant 4 and purifier, keep in the comdenstion water C that produces among the MVR evaporation plant 4.
In one embodiment of the present invention, the separation device comprises an oil separation tank 2; the drying device comprises a centrifugal drying device 5; the purification device comprises an activated carbon adsorption device 7; a ceramic membrane and/or an oleophobic membrane is arranged inside the filtering membrane device 3; the MVR evaporation device 4 comprises one of a single-effect, double-effect, falling film, rising film and forced MVR evaporation device, and the double-effect falling film MVR evaporation device 4 is preferably adopted. The utility model provides a preferred embodiment, the separator adopts the oil separation tank 2 for separating the water phase and the organic phase, and in addition, the method for realizing the oil-water separation also comprises the addition of chemical agents, such as demulsifier and the like; the drying device adopts a centrifugal drying device 5 to centrifugally dry the crystallized product; the purification device adopts an active carbon adsorption device 7; the filter membrane device 3 adopts a ceramic membrane and/or an oleophobic membrane for filtration, is insoluble to the organic phase, has high separation efficiency, and can reduce the water content of the concentrated organic phase to below 5 percent; the MVR evaporation device 4 adopts two-stage falling film serial evaporation in the falling film concentration section: steam generated by the first-effect falling film is used as heating steam of the second-effect falling film, the process combines the advantages of the traditional multiple-effect and MVR processes, theoretically, 2 tons of distilled water can be generated by 1 ton of heating steam, and the operation cost of the system is reduced. In addition, the MVR evaporation device 4 can be replaced by other concentration devices such as a reverse osmosis device, a multi-effect evaporation device or an electrodialysis device, but the above devices have problems in use, such as the reverse osmosis and the electrodialysis require replacement of cleaning membranes and the steam cost of the multi-effect evaporation system, so that the MVR evaporation concentration is the most economical and feasible scheme at present.
The utility model also provides a processing method of the waste lithium battery recycling wastewater processing system based on the above embodiment. The processing method comprises the following steps:
s1, separating the wastewater into a water phase A and an organic phase A by using a separation device:
s2, filtering and separating the water phase A generated in the step S1 by using a filtering membrane device 3 to obtain an organic phase B and a water phase B;
s3, pumping the water phase B generated in the step S2 into an MVR evaporation device 4 to obtain condensed water C, concentrated solution C and a crystallization product;
s4, centrifugally drying the crystallized product in the step S3 to obtain sulfate;
s5, temporarily storing the condensed water C in the step S3 in a condensed water storage tank 6, and allowing the condensed water C to enter a purification device for adsorption to obtain pure water;
s6, introducing the concentrated solution C obtained in the step S3 into a high-grade oxidation device 8, and mixing effluent and the water phase A and refluxing to the filtering membrane device 3.
The utility model provides a pair of processing method of processing system of waste lithium battery recovery waste water uses with the processing system cooperation of the waste lithium battery recovery waste water of above-mentioned embodiment, and it has realized the high-efficient recycle of resource, reduces and reaches the zero release even, reduces waste lithium battery waste water treatment cost.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art will understand that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications or substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present invention.
Claims (10)
1. The utility model provides a processing system of waste lithium battery recovery waste water which characterized in that includes:
a separation device for separating the wastewater into an aqueous phase A and an organic phase A;
a filtration membrane apparatus into which the aqueous phase a is passed, the filtration membrane apparatus being configured to separate the aqueous phase a into an aqueous phase B and an organic phase B;
the water phase B is introduced into the concentration device and connected with the concentration device, and the concentration device is used for separating the water phase B into condensed water C, concentrated solution C and a crystallization product;
the drying device is used for drying the crystallized product to obtain a product A;
and the condensed water C is introduced into the purification device, and the purification device is used for adsorbing the condensed water C to obtain pure water.
2. The waste lithium battery recycling wastewater treatment system according to claim 1, further comprising:
and the concentrated solution C is introduced into the advanced oxidation device, and the advanced oxidation device is used for carrying out oxidation treatment on the concentrated solution, mixing the concentrated solution with the water phase A and introducing the mixed solution into the filtering membrane device.
3. The waste lithium battery recycling wastewater treatment system according to claim 1, further comprising a condensed water storage tank connected between the concentration device and the purification device for storing the condensed water C.
4. The waste lithium battery recycling wastewater treatment system according to claim 1, wherein the separation device comprises an oil separation tank.
5. The waste lithium battery recycling wastewater treatment system according to claim 1, wherein the drying device comprises a centrifugal drying device.
6. The waste lithium battery recycling wastewater treatment system according to claim 1, wherein the purification device comprises an activated carbon adsorption device.
7. The waste lithium battery recycling wastewater treatment system according to claim 1, wherein a ceramic membrane and/or an oleophobic membrane is arranged inside the filtration membrane device.
8. The system for treating the waste lithium battery recycling wastewater as recited in any one of claims 1 to 7, wherein the concentration device comprises an MVR evaporation device.
9. The waste lithium battery recycling wastewater treatment system according to claim 8, wherein the MVR evaporation device comprises one of a single-effect, double-effect, falling-film, rising-film and forced MVR evaporation device.
10. The waste lithium battery recycling wastewater treatment system according to claim 1, wherein the concentration device comprises one of a reverse osmosis device, a multi-effect evaporation device and an electrodialysis device.
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| CN202221359804.7U CN217555997U (en) | 2022-05-31 | 2022-05-31 | Waste lithium battery recycling wastewater treatment system |
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| CN202221359804.7U CN217555997U (en) | 2022-05-31 | 2022-05-31 | Waste lithium battery recycling wastewater treatment system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114956425A (en) * | 2022-05-31 | 2022-08-30 | 昆山三一环保科技有限公司 | Treatment system and treatment method for waste lithium battery recovery wastewater |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114956425A (en) * | 2022-05-31 | 2022-08-30 | 昆山三一环保科技有限公司 | Treatment system and treatment method for waste lithium battery recovery wastewater |
| CN114956425B (en) * | 2022-05-31 | 2024-07-02 | 昆山三一环保科技有限公司 | Treatment system and treatment method for waste lithium battery recovery wastewater |
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