A device and method for synchronously treating wastewater in an electrolyte and carbonate production process

Abstract

The application discloses a device and a method for synchronously treating wastewater in electrolyte and carbonate production processes, which comprises a fluorine-containing wastewater pretreatment system, an organic wastewater pretreatment system, a biochemical treatment system, a sludge treatment system and an odor treatment system. The fluorine-containing wastewater pretreatment system is used for treating wastewater in electrolyte production, and the organic wastewater pretreatment system is used for treating wastewater in carbonate production. The fluorine-containing wastewater pretreatment system and the organic wastewater pretreatment system are respectively connected with water inlets of the biochemical treatment system. The sludge treatment system is used for treating sludge. The fluorine-containing wastewater pretreatment system, the organic wastewater pretreatment system and the biochemical treatment system are respectively connected with the sludge treatment system. The fluorine-containing wastewater pretreatment system, the organic wastewater pretreatment system, the biochemical treatment system and the sludge treatment system are respectively connected with the odor treatment system. The device and the method can not only reduce wastewater treatment cost of enterprises, but also reduce equipment land occupation area, improve wastewater treatment efficiency and ensure safety and environmental protection.

Description

Technical Field

[0001] This invention relates to the field of wastewater treatment technology, and more specifically to an apparatus and method for simultaneously treating wastewater from the production of electrolytes and carbonates. Background Technology

[0002] With the rapid development of the new energy vehicle industry, the demand for batteries and their key components, such as electrolytes, is also growing rapidly. Electrolytes mainly consist of solvents, additives, and electrolytes. Solvents are typically carbonates, such as ethylene carbonate, propylene carbonate, dimethyl carbonate, ethyl methyl carbonate, and diethyl carbonate. Electrolytes are usually fluorinated compounds, such as lithium hexafluorophosphate or sodium hexafluorophosphate.

[0003] The production processes of electrolytes and carbonates generate two types of wastewater with different sources and compositions. Traditionally, these two types of wastewater are treated separately, requiring independent electrolyte wastewater treatment and organic solvent wastewater treatment systems. However, this approach not only increases equipment investment costs for businesses but also occupies significant space. More seriously, the odor generated during wastewater treatment is also a problem that needs to be addressed, necessitating additional odor control equipment.

[0004] Therefore, to solve the above problems, it is necessary to provide an apparatus and method for simultaneously treating wastewater from electrolyte and carbonate production processes. This method can not only reduce wastewater treatment costs for enterprises, but also reduce the required floor space and improve treatment efficiency. Summary of the Invention

[0005] Based on the above technical problems, the present invention provides an apparatus and method for simultaneously treating wastewater from the production process of electrolyte and carbonate, which can not only reduce the wastewater treatment cost of enterprises, but also reduce the equipment footprint, improve wastewater treatment efficiency, and is safe and environmentally friendly.

[0006] To achieve the above objectives, the present invention discloses an apparatus for simultaneously treating wastewater from electrolyte and carbonate production processes, comprising:

[0007] Fluorine-containing wastewater pretreatment system is used to treat wastewater from electrolyte production;

[0008] Organic wastewater pretreatment system for treating wastewater from carbonate production;

[0009] A biochemical treatment system, wherein the outlet of the fluoride-containing wastewater pretreatment system and the outlet of the organic wastewater pretreatment system are respectively connected to the inlet of the biochemical treatment system, and the biochemical treatment system is used to treat the sewage discharged from the fluoride-containing wastewater pretreatment system and the sewage discharged from the organic wastewater pretreatment system.

[0010] The sludge treatment system is used to treat sludge. The sludge outlet of the fluoride-containing wastewater pretreatment system, the sludge outlet of the organic wastewater pretreatment system, and the sludge outlet of the biochemical treatment system are respectively connected to the sludge inlet of the sludge treatment system.

[0011] An odor treatment system is used to treat odors. The gas outlets of the fluoride-containing wastewater pretreatment system, the organic wastewater pretreatment system, and the biochemical treatment system are respectively connected to the odor treatment system.

[0012] Compared with existing technologies, the apparatus and method for simultaneously treating wastewater from electrolyte and carbonate production processes of the present invention employs a fluoride-containing wastewater pretreatment system to pretreat wastewater from electrolyte production, removing fluoride compounds and other impurities. An organic wastewater pretreatment system is used to pretreat wastewater from carbonate production, removing ethylene oxide and other impurities. The effluent from both processes is then collected in a biological treatment system for further biological treatment. Simultaneously, a sludge treatment system is used to compress and dewater the sludge generated during wastewater treatment, and an odor treatment system is used to deodorize the odor generated during wastewater treatment. Therefore, the present invention can simultaneously treat wastewater from electrolyte and carbonate production processes, reducing equipment investment and operating costs. It also provides high-quality treatment of wastewater from two different sources and with different compositions, achieving excellent purification quality, high operating efficiency, and ensuring compliant wastewater discharge, thus ensuring safety and environmental protection.

[0013] Preferably, the fluoride-containing wastewater pretreatment system includes, in sequence along the water flow direction, a fluoride-containing wastewater collection tank, a defluorination reaction tank, and a first coagulation sedimentation tank. The fluoride-containing wastewater collection tank is used to collect wastewater from electrolyte production. The defluorination reaction tank is used to generate calcium fluoride precipitate. The first coagulation sedimentation tank is used for sludge-water separation. The supernatant after treatment in the first coagulation sedimentation tank is discharged into the biochemical treatment system, and the sludge is discharged into the sludge treatment system.

[0014] Preferably, the organic wastewater pretreatment system includes, in sequence along the water flow direction, an organic wastewater collection tank, a catalytic hydrolysis tank, a neutralization tank, a pre-acidification tank, and an acidification sedimentation tank. The organic wastewater collection tank is used to collect wastewater from carbonate production. The supernatant after treatment in the acidification sedimentation tank is discharged into the biochemical treatment system, and the sludge is discharged into the sludge treatment system. The pre-acidification tank and the acidification sedimentation tank are respectively connected to the odor treatment system.

[0015] Preferably, the acidification sedimentation tank is provided with a return branch that returns to the pre-acidification tank.

[0016] Preferably, the biochemical treatment system includes, in sequence along the water flow direction, an equalization tank, an IC anaerobic tower, a biological selection tank, a hydrolysis tank, an aerobic tank, an aerobic sedimentation tank, an end-of-pipe coagulation sedimentation tank, and a wastewater monitoring tank. The effluent from the fluoride-containing wastewater pretreatment system and the organic wastewater pretreatment system flows into the equalization tank. The equalization tank, IC anaerobic tower, biological selection tank, hydrolysis tank, aerobic tank, and aerobic sedimentation tank are respectively connected to the odor treatment system. The sludge discharged from the biological selection tank, the aerobic sedimentation tank, and the end-of-pipe coagulation sedimentation tank enters the sludge treatment system.

[0017] Preferably, a reflux path is provided between the aerobic sedimentation tank and the hydrolysis tank, and between the aerobic tank and the hydrolysis tank.

[0018] Preferably, an aeration device is installed in the regulating tank.

[0019] Preferably, the sludge treatment system includes a sludge thickening tank and a sludge filter press connected in sequence. The sludge discharged from the fluoride-containing wastewater pretreatment system, the organic wastewater pretreatment system, and the biochemical treatment system enters the sludge thickening tank, and the sludge filter press compresses the sludge transported from the sludge thickening tank.

[0020] Preferably, the odor treatment system includes an alkaline spray tower, an activated carbon adsorption tower, a blower, and a chimney, depending on the gas flow direction. The alkaline spray tower is used to remove acid from the gas, the activated carbon adsorption tower is used to deodorize the gas, and the blower is used to introduce the gas into the chimney for emission.

[0021] Accordingly, the present invention also provides a method for simultaneously treating wastewater from the production process of electrolyte and carbonate, using the apparatus for simultaneously treating wastewater from the production process of electrolyte and carbonate, comprising the following steps:

[0022] (1) A fluorine-containing wastewater pretreatment system is used to pretreat the wastewater in the electrolyte production to remove fluorine compounds, and an organic wastewater pretreatment system is used to pretreat the wastewater in the carbonate production to remove ethylene oxide.

[0023] (2) The effluent from the fluoride-containing wastewater pretreatment system and the effluent from the organic wastewater pretreatment system are both discharged into the biochemical treatment system for biochemical treatment.

[0024] The sludge generated during the wastewater treatment process of the fluoride-containing wastewater pretreatment system, the organic wastewater pretreatment system, and the biochemical treatment system is discharged into the sludge treatment system, where it is compressed and dewatered.

[0025] The gases generated during the wastewater treatment process by the fluoride-containing wastewater pretreatment system, the organic wastewater pretreatment system, and the biochemical treatment system are transported to the odor treatment system for deodorization. Attached Figure Description

[0026] Figure 1 The diagram shows a schematic of the device for simultaneously treating wastewater from the production of electrolyte and carbonates according to the present invention. Detailed Implementation

[0027] The technical solutions of the present invention will be clearly and completely described below with reference to the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0028] Please refer to Figure 1 This invention provides an apparatus for simultaneously treating wastewater from electrolyte and carbonate production processes, comprising a fluoride-containing wastewater pretreatment system 10, an organic wastewater pretreatment system 30, a biochemical treatment system 50, a sludge treatment system 70, and an odor treatment system 90. The fluoride-containing wastewater pretreatment system 10 treats wastewater from electrolyte production, and the organic wastewater pretreatment system 30 treats wastewater from carbonate production. The outlets of the fluoride-containing wastewater pretreatment system 10 and the organic wastewater pretreatment system 30 are respectively connected to the inlet of the biochemical treatment system 50, which is used to treat wastewater from electrolyte and carbonate production processes. Wastewater discharged from the fluoride-containing wastewater pretreatment system 10 and the organic wastewater pretreatment system 30 are treated by the sludge treatment system 70. The sludge outlets of the fluoride-containing wastewater pretreatment system 10, the organic wastewater pretreatment system 30, and the biochemical treatment system 50 are respectively connected to the sludge inlet of the sludge treatment system 70. The odor treatment system 90 is used to treat odors. The gas outlets of the fluoride-containing wastewater pretreatment system 10, the organic wastewater pretreatment system 30, and the biochemical treatment system 50 are respectively connected to the odor treatment system 90.

[0029] In some preferred embodiments, the fluoride wastewater pretreatment system 10 includes, sequentially along the water flow direction, a fluoride wastewater collection tank 11, a defluorination reaction tank 13, and a first coagulation sedimentation tank 15. The fluoride wastewater collection tank 11 is used to collect wastewater from electrolyte production. Preferably, the fluoride wastewater collection tank 11 is equipped with an air agitator to agitate the collected wastewater, ensuring uniformity of the components and facilitating subsequent treatment. Preferably, the gas generated in the fluoride wastewater collection tank 11 can be discharged into the odor treatment system 90. The defluorination reaction tank 13 is used to generate calcium fluoride precipitate. Specifically, a necessary chemical, such as Ca(OH)2, is added to the defluorination reaction tank 13 to precipitate calcium fluoride. 2+ With F -The reaction produces calcium fluoride precipitate, which is then removed from the water by gravity sedimentation after the addition of coagulants and flocculants (PAC, PAM, etc.). Preferably, a stirring device is installed in the defluorination reaction tank 13 to improve the sedimentation performance of the calcium fluoride precipitate and enhance the water treatment effect. The effluent from the defluorination reaction tank 13 enters the first coagulation sedimentation tank 15, which is used for sludge-water separation. The supernatant after treatment in the first coagulation sedimentation tank 15 is discharged into the biological treatment system 50, and the sludge is discharged into the sludge treatment system 70. The specific process of the fluoride-containing wastewater pretreatment system 10 is as follows: wastewater from the electrolyte production process enters the fluoride-containing wastewater collection tank 11 and is stirred evenly. Then it flows into the defluorination reaction tank 13 and is reacted with added chemicals to generate calcium fluoride precipitate. Coagulants and flocculants are added to facilitate gravity sedimentation and removal from the water. The effluent from the defluorination reaction tank 13 enters the first coagulation sedimentation tank 15 for sludge-water separation. The supernatant after treatment in the first coagulation sedimentation tank 15 is discharged into the biochemical treatment system 50, and the sludge is discharged into the sludge treatment system 70.

[0030] In some preferred embodiments, the organic wastewater pretreatment system 30 includes, in sequence along the water flow direction, an organic wastewater collection tank 31, a catalytic hydrolysis tank 33, a neutralization tank 35, a pre-acidification tank 37, and an acidification sedimentation tank 39. The supernatant from the acidification sedimentation tank 39 is discharged into the biochemical treatment system 50, and the sludge is discharged into the sludge treatment system 70. The pre-acidification tank 37 and the acidification sedimentation tank 39 are respectively connected to the odor treatment system 90. The organic wastewater collection tank 31 is used to collect wastewater from carbonate production. Preferably, the organic wastewater collection tank 31 is equipped with an air agitator to ensure uniformity of the components in the wastewater, which is beneficial for subsequent treatment. Preferably, the gas generated in the organic wastewater collection tank 31 can be discharged into the odor treatment system 90; the catalytic hydrolysis tank 33 is used to treat organic solvents. Chemicals are added to the catalytic hydrolysis tank 33 to catalytically hydrolyze ethylene oxide into ethylene glycol. For example, concentrated sulfuric acid is added to the catalytic hydrolysis tank 33 to adjust the wastewater pH to acidic. Under acidic conditions, mechanical stirring is applied, and ethylene oxide is catalytically hydrolyzed into ethylene glycol; the neutralization tank 35 is used to adjust the pH to neutral. Specifically, NaOH is added to the neutralization tank 35, and mechanical stirring is applied to adjust the wastewater pH back to neutral, which is beneficial to the operation of the subsequent biochemical system; the pre-acidification tank 37 is used for further treatment of organic solvents. Specifically, the pre-acidification tank 37... The internal hydrolytic acidifying bacteria transform toxic organic compounds such as ethylene oxide in water into small, easily degradable organic compounds. Mechanical stirring facilitates this transformation. Simultaneously, the pre-acidification tank 37 modifies some biotoxic substances, making the subsequent IC anaerobic tower more stable and efficient. Preferably, the gas generated in the pre-acidification tank 37 can be discharged into the odor treatment system 90. The acidification sedimentation tank 39 is used for sludge-water separation and microbial selection in the pre-acidification tank 37. The supernatant from the acidification sedimentation tank 39 is discharged into the biochemical treatment system 50, and the sludge is discharged into the sludge treatment system 70. Preferably, the gas generated in the acidification sedimentation tank 39 is discharged into the odor treatment system 90. In some embodiments, the acidification sedimentation tank 39 is provided with a return branch 38 that returns to the pre-acidification tank 37. With the help of the return branch 38, a small portion of the supernatant after treatment in the acidification sedimentation tank 39 is returned to the pre-acidification tank 37, while most of the supernatant is discharged into the biochemical treatment system 50. This design can be controlled by adding valves. Adding a return branch is beneficial for the pre-acidification tank 37 to convert refractory toxic organic matter into small molecule easily degradable organic matter.The specific process of the organic wastewater pretreatment system 30 is as follows: Wastewater generated during the carbonate production process is discharged into the organic wastewater collection tank 31. After preliminary stirring and adjustment, it is transported to the catalytic hydrolysis tank 33. In the catalytic hydrolysis tank 33, ethylene oxide is catalytically hydrolyzed into ethylene glycol. The effluent from the catalytic hydrolysis tank 33 is discharged into the neutralization tank 35 to adjust the pH of the wastewater back to neutral. Then, the effluent enters the pre-acidification tank 37. Utilizing the action of hydrolytic acidifying bacteria in the pre-acidification tank 37, the toxic organic matter in the water, such as ethylene oxide, which is difficult to degrade, is converted into small-molecule, easily degradable organic matter. The effluent from the pre-acidification tank 37 enters the acidification sedimentation tank 39. The supernatant after treatment in the acidification sedimentation tank 39 is discharged into the biochemical treatment system 50, and the sludge is discharged into the sludge treatment system 70.

[0031] In some preferred embodiments, the biochemical treatment system 50 includes, sequentially along the water flow direction, an equalization tank 51, an IC anaerobic tower 52, a biological selection tank 53, a hydrolysis tank 54, an aerobic tank 55, an aerobic sedimentation tank 56, a terminal coagulation sedimentation tank 57, and a wastewater monitoring tank 58. The effluent from the fluoride-containing wastewater pretreatment system 10 and the organic wastewater pretreatment system 30 flows into the equalization tank 51. The equalization tank 51, IC anaerobic tower 52, biological selection tank 53, hydrolysis tank 54, aerobic tank 55, and aerobic sedimentation tank 56 are connected to the odor treatment system 90. The sludge discharged from the biological selection tank 53, aerobic sedimentation tank 56, and terminal coagulation sedimentation tank 57 enters the sludge treatment system 70. The equalization tank 51 is used to collect wastewater treated by the fluoride-containing wastewater pretreatment system 10 and the organic wastewater pretreatment system 30. Other wastewater can also be discharged into the equalization tank 51, such as RTO quench tower drainage and domestic wastewater, for further treatment. Preferably, an aeration device is installed in the equalization tank 51 to ensure uniform mixing of the wastewater and wastewater, which is beneficial to improving the quality of wastewater treatment. Optionally, the gas generated in the equalization tank 51 is discharged into the odor treatment system 90. The IC anaerobic tower 52 uses anaerobic bacteria to convert organic matter in the water into methane. After the reaction in the IC anaerobic tower 52, the organic matter in the wastewater is converted into clean energy biogas, which can be collected and purified for utilization, realizing waste utilization. Optionally, the odor generated in the IC anaerobic tower 52 is sent to the odor treatment system 90. The effluent from the IC anaerobic tower 52 flows into the biological selection tank 53. The biological selection tank 53 regulates the water quality and quantity and simultaneously agitates the water, providing anaerobic treatment, inhibiting the growth of filamentous bacteria, and preventing sludge bulking. The highly active sludge in the biological selection tank 53 is returned to the IC anaerobic tower 52 to replenish the sludge lost from the IC anaerobic tower 52, while the low-activity broken sludge is discharged as surplus sludge into the sludge treatment system 70. Preferably, the gas generated in the biological selection tank 53 is discharged into the odor treatment system 90; the effluent from the biological selection tank 53 flows into the hydrolysis tank 54, where, under the action of hydrolytic acidifying bacteria and mechanical stirring, the residual large-molecule recalcitrant organic matter in the water is further decomposed into small-molecule easily degradable organic matter, thereby improving the biodegradability of the wastewater. Optionally, the odor generated in the hydrolysis tank 54 is sent to the odor treatment system 90; the effluent from the hydrolysis tank 54 enters the aerobic tank 55, which contains a large number of aerobic microorganisms. With microporous aeration, the oxygen content and bacterial activity in the water are increased, improving the conversion rate and enabling the organic matter in the water to be fully degraded to achieve compliant discharge.Optionally, the odor generated in the aerobic tank 55 is sent to the odor treatment system 90; the effluent from the aerobic tank 55 flows into the aerobic sedimentation tank 56, where the sludge and water are separated. Preferably, a return flow path 59 is provided between the aerobic sedimentation tank 56 and the hydrolysis tank 54 and the aerobic tank 55. The return flow path 59 allows part of the supernatant after separation in the aerobic sedimentation tank 56 to be returned to the hydrolysis tank 54 and the aerobic tank 55, extending the reaction time, further improving the biochemical efficiency, and ensuring the completeness of the reaction. Part of the effluent is discharged into the terminal coagulation sedimentation tank 57, and the separated sludge is discharged into the sludge treatment system 70. The generated odor is sent to the odor treatment system 90. The effluent from the final coagulation sedimentation tank 57 enters the wastewater monitoring tank 58, which is equipped with various analytical instruments to detect whether the wastewater meets the standards. These analytical instruments include, but are not limited to, ammonia nitrogen testers, COD testers, BOD testers, SS testers, TP testers, TN testers, pH meters, and ultrasonic flow meters. If the test results meet the standards, the wastewater is discharged; if not, it is returned to the IC anaerobic tower 52 for further treatment. The specific process of the biochemical treatment system 50 is as follows: the supernatant after treatment in the acidification sedimentation tank 39 is discharged into the equalization tank 51, and the supernatant after treatment in the first coagulation sedimentation tank 15 is discharged into the equalization tank 51. After being stirred evenly in the equalization tank 51, it flows into the IC anaerobic tower 52. The IC anaerobic tower 52 uses the action of anaerobic bacteria to convert organic matter in the water into methane. The effluent from the IC anaerobic tower 52 flows into the biological selection tank 53. The biological selection tank 53 adjusts the water quality and quantity and stirs the water at the same time, which has the effect of anaerobic treatment, inhibits the growth of filamentous bacteria, and prevents sludge bulking. The effluent from the biological selection tank 53 enters the hydrolysis tank 54. In the hydrolysis tank 54, under the action of hydrolytic acidifying bacteria, the residual large molecular recalcitrant organic matter in the water is decomposed into small molecules. Easily degradable organic matter is discharged from the hydrolysis tank 54 into the aerobic tank 55, where the organic matter is fully degraded. The effluent from the aerobic tank 55 flows into the aerobic sedimentation tank 56, where sludge and water are separated. Part of the supernatant is returned to the hydrolysis tank 54 and the aerobic tank 55, while part of the effluent is discharged into the terminal coagulation sedimentation tank 57. The separated sludge is discharged into the sludge treatment system 70. The odor emitted from the equalization tank 51, IC anaerobic tower 52, biological selection tank 53, hydrolysis tank 54, aerobic tank 55, and aerobic sedimentation tank 56 is sent to the odor treatment system 90. The effluent from the terminal coagulation sedimentation tank 57 enters the wastewater monitoring tank 58. If the test results meet the standards, the effluent is discharged; otherwise, it is returned to the IC anaerobic tower 52 for further treatment.

[0032] In some preferred embodiments, the sludge treatment system 70 includes a sludge thickening tank 71 and a sludge filter press 73 connected in sequence. Sludge discharged from the fluoride-containing wastewater pretreatment system 10, the organic wastewater pretreatment system 30, and the biochemical treatment system 50 enters the sludge thickening tank 71, and the sludge filter press 73 compresses the sludge transported from the sludge thickening tank 71. During the wastewater treatment process of the fluoride-containing wastewater pretreatment system 10, the organic wastewater pretreatment system 30, and the biochemical treatment system 50, the discharged sludge flows into the sludge thickening tank 71, and then the sludge is compressed by the sludge filter press 73. The dewatered sludge cake is disposed of externally, and the filtrate flows into the equalization tank 51.

[0033] In some preferred embodiments, the odor treatment system 90 includes an alkaline spray tower 91, an activated carbon adsorption tower 93, a blower 95, and a chimney 97. After the odorous gas undergoes acid removal and deodorization in the alkaline spray tower 91 and activated carbon adsorption tower 93 respectively, it is then introduced into the chimney 97 for emission using the blower 95. Specifically, the alkaline spray tower 91 uses a certain concentration of alkaline solution for spraying, which can remove small amounts of acidic gases such as hydrogen fluoride that may be present in the odor components, preventing corrosion of the equipment. After treatment in the alkaline spray tower 91, the gas is transported to the activated carbon adsorption tower 93, where it adsorbs various odor components. The purified gas is then introduced into the chimney 97 for emission using the blower 95.

[0034] In summary, this invention can simultaneously treat wastewater from the electrolyte production process and wastewater from the carbonate production process, reducing equipment investment and operating costs. It can also treat wastewater from two different sources and with different compositions with high quality, achieving excellent purification quality, high operating efficiency, and ensuring that wastewater meets discharge standards, thus ensuring safety and environmental protection.

[0035] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0036] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. An apparatus for simultaneously treating wastewater from the production of electrolyte and carbonate, characterized in that, include: A fluoride-containing wastewater pretreatment system is used to treat wastewater from electrolyte production. The fluoride-containing wastewater pretreatment system includes, in sequence along the water flow direction, a fluoride-containing wastewater collection tank, a defluorination reaction tank, and a first coagulation sedimentation tank. The fluoride-containing wastewater collection tank is used to collect wastewater from electrolyte production. The defluorination reaction tank is used to generate calcium fluoride precipitate. The first coagulation sedimentation tank is used for sludge-water separation. The supernatant after treatment in the first coagulation sedimentation tank is discharged into a biochemical treatment system, and the sludge is discharged into a sludge treatment system. An organic wastewater pretreatment system is used to treat wastewater from carbonate production. The organic wastewater pretreatment system includes, in sequence along the water flow direction, an organic wastewater collection tank, a catalytic hydrolysis tank, a neutralization tank, a pre-acidification tank, and an acidification sedimentation tank. The organic wastewater collection tank is used to collect wastewater from carbonate production. The supernatant after treatment in the acidification sedimentation tank is discharged into the biochemical treatment system, and the sludge is discharged into the sludge treatment system. The pre-acidification tank and the acidification sedimentation tank are respectively connected to an odor treatment system. The biological treatment system includes an outlet for the fluoride-containing wastewater pretreatment system and an outlet for the organic wastewater pretreatment system, both connected to the inlet of the biological treatment system. The biological treatment system treats wastewater discharged from both the fluoride-containing wastewater pretreatment system and the organic wastewater pretreatment system. Along the water flow direction, the biological treatment system sequentially includes an equalization tank, an IC anaerobic tower, a biological selection tank, a hydrolysis tank, an aerobic tank, an aerobic sedimentation tank, a terminal coagulation sedimentation tank, and a wastewater monitoring tank. The treated effluent from the fluoride-containing wastewater pretreatment system and the organic wastewater pretreatment system flows into the equalization tank. The equalization tank, IC anaerobic tower, biological selection tank, hydrolysis tank, aerobic tank, and aerobic sedimentation tank are connected to the odor treatment system. The sludge discharged from the biological selection tank, aerobic sedimentation tank, and terminal coagulation sedimentation tank enters the sludge treatment system. The sludge treatment system is used to treat sludge. The sludge outlet of the fluoride-containing wastewater pretreatment system, the sludge outlet of the organic wastewater pretreatment system, and the sludge outlet of the biochemical treatment system are respectively connected to the sludge inlet of the sludge treatment system. An odor treatment system is used to treat odorous gases. The gas outlets of the fluoride-containing wastewater pretreatment system, the organic wastewater pretreatment system, and the biochemical treatment system are respectively connected to the odor treatment system. The odor treatment system includes an alkaline spray tower, an activated carbon adsorption tower, a blower, and a chimney according to the gas flow direction. The alkaline spray tower is used to remove acid from the gas, the activated carbon adsorption tower is used to deodorize, and the blower introduces the gas into the chimney for emission.

2. The apparatus for simultaneously treating wastewater from the electrolyte and carbonate production process as described in claim 1, characterized in that, The acidification sedimentation tank is provided with a return branch that returns to the pre-acidification tank.

3. The apparatus for simultaneously treating wastewater from the electrolyte and carbonate production process as described in claim 2, characterized in that, A return flow path is provided between the aerobic sedimentation tank, the hydrolysis tank, and the aerobic tank.

4. The apparatus for simultaneously treating wastewater from the electrolyte and carbonate production process as described in claim 2, characterized in that, An aeration device is installed in the regulating tank.

5. The apparatus for simultaneously treating wastewater from the electrolyte and carbonate production process as described in claim 1, characterized in that, The sludge treatment system includes a sludge thickening tank and a sludge filter press connected in sequence. The sludge discharged from the fluoride-containing wastewater pretreatment system, the organic wastewater pretreatment system, and the biochemical treatment system enters the sludge thickening tank, and the sludge filter press compresses the sludge transported from the sludge thickening tank.

6. A method for simultaneously treating wastewater from electrolyte and carbonate production processes, characterized in that, The apparatus for simultaneously treating wastewater from the production process of electrolyte and carbonate, as described in any one of claims 1-5, includes the following steps: (1) A fluorine-containing wastewater pretreatment system is used to pretreat the wastewater in the electrolyte production to remove fluorine compounds, and an organic wastewater pretreatment system is used to pretreat the wastewater in the carbonate production to remove ethylene oxide. (2) The effluent from the fluoride-containing wastewater pretreatment system and the effluent from the organic wastewater pretreatment system are both discharged into the biochemical treatment system for biochemical treatment. The sludge generated during the wastewater treatment process of the fluoride-containing wastewater pretreatment system, the organic wastewater pretreatment system, and the biochemical treatment system is discharged into the sludge treatment system, where it is compressed and dewatered. The gases generated during the wastewater treatment process by the fluoride-containing wastewater pretreatment system, the organic wastewater pretreatment system, and the biochemical treatment system are transported to the odor treatment system for deodorization.

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