A high-salt mine water treatment device and a treatment method

Abstract

The application discloses a kind of high-salt mine water processing device and processing method, belong to high-salt mine water processing technical field, to solve at least one of the problems, such as huge energy, infrastructure complexity, unable batch processing wastewater in prior art high-salt mine water processing.The application, processing device, including anode flow electrode tank, cathode flow electrode tank, high-salt mine water tank, clean water tank and flow electrode capacitive deionization component;Flow electrode capacitive deionization component includes anode side current collector plate, cation exchange membrane, processing liquid cavity plate, anion exchange membrane and cathode side current collector plate in turn, anode flow electrode tank and anode side current collector plate are communicated to constitute anode flow electrode circulation loop, cathode flow electrode tank and cathode side current collector plate are communicated to constitute cathode flow electrode circulation loop, high-salt mine water tank, processing liquid cavity plate and clean water tank are communicated in turn to constitute high-salt mine water and clean water circulation loop.The application can be used for the processing of high-salt mine water.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of high-salt mine water treatment, and particularly relates to a high-salt mine water treatment device and method. BACKGROUND

[0002] High-salt mine water generally refers to mine water with a salt content higher than 1000 mg / L. If high-salt mine water is directly discharged without treatment, it will cause harm to the ecological environment, for example, rising of surface water salinity, rising of shallow groundwater level, soil salinization, and crop yield reduction.

[0003] The main treatment methods for high-salt mine water include membrane treatment (for example, reverse osmosis method) and capacitive deionization (CDI) technology. The reverse osmosis method requires huge energy, complex infrastructure, and large investment. The capacitive deionization technology can only work in an intermittent manner and cannot treat wastewater in batches. SUMMARY

[0004] In view of the above analysis, the application aims to provide a high-salt mine water treatment device and method to solve at least one of the problems in the prior art, such as the need for huge energy, complex infrastructure, and the inability to treat wastewater in batches.

[0005] The main purpose of the application is achieved through the following technical solutions.

[0006] The application provides a high-salt mine water treatment device, which comprises an anode flow electrode tank, a cathode flow electrode tank, a high-salt mine water tank, a clean water tank, and a flow electrode capacitive deionization assembly. The flow electrode capacitive deionization assembly comprises an anode-side current collector plate, a cation exchange membrane, a treatment liquid cavity plate, an anion exchange membrane, and a cathode-side current collector plate which are stacked in sequence. The anode flow electrode tank and the anode-side current collector plate are connected to form an anode flow electrode circulation loop. The cathode flow electrode tank and the cathode-side current collector plate are connected to form a cathode flow electrode circulation loop. The high-salt mine water tank, the treatment liquid cavity plate, and the clean water tank are connected in sequence to form a high-salt mine water and clean water circulation loop.

[0007] Further, an anode peristaltic pump is arranged on the connecting pipeline of the anode flow electrode tank and the anode-side current collector plate.

[0008] Further, a cathode peristaltic pump is arranged on the connecting pipeline of the cathode flow electrode tank and the cathode-side current collector plate.

[0009] Further, a mine water peristaltic pump is arranged on the connecting pipeline of the high-salt mine water tank and the treatment liquid cavity plate.

[0010] Further, an electric conductivity meter is arranged, and the detection end of the electric conductivity meter is inserted below the liquid level of the mine water in the high-salt mine water tank.

[0011] Further, the water outlet pipe of the high-salinity mine water tank is a telescopic pipe.

[0012] Further, the water outlet pipe of the high-salinity mine water tank comprises a first pipe body and a second pipe body, the second pipe body is sleeved on the outer wall of the first pipe body and is in slidable sealing connection with the first pipe body, the first pipe body is located outside the tank body of the high-salinity mine water tank, and the second pipe body is located inside the tank body of the high-salinity mine water tank.

[0013] Further, one end of the second pipe body close to the first pipe body is provided with a flange, and the flange is located outside the tank body of the high-salinity mine water tank.

[0014] Further, the device further comprises a dredging assembly for dredging the water outlet pipe.

[0015] The application further provides a treatment method of high-salinity mine water, which adopts the treatment device of high-salinity mine water.

[0016] The anode flow electrode flows in the anode flow electrode circulation loop, the cathode flow electrode flows in the cathode flow electrode circulation loop, and the high-salinity mine water is supplied from the high-salinity mine water tank into the treatment liquid cavity plate.

[0017] Under the action of the electric field generated between the anode flow electrode and the cathode flow electrode, the cations in the high-salinity mine water pass through the cation exchange membrane into the anode side flow channel of the anode side busbar, the anions in the high-salinity mine water pass through the anion exchange membrane into the cathode side flow channel of the cathode side busbar, so that the high-salinity mine water becomes clean water and flows into the clean water tank, and the treatment of the high-salinity mine water is completed.

[0018] Compared with the prior art, the application can achieve at least one of the following beneficial effects.

[0019] The treatment device of high-salinity mine water provided by the application adopts a flow electrode capacitive deionization assembly (i.e., an FCDI assembly), in the treatment process of the high-salinity mine water, the high-salinity mine water, the anode flow electrode and the cathode flow electrode are always in a flowing state, the uninterrupted treatment of the high-salinity mine water is realized, the treatment efficiency is improved, so that the high-salinity mine water can be treated for a long time and in a large quantity, at the same time, since the anode side busbar can continuously adsorb cations to reduce the concentration of cations in the anode flow electrode, and the cathode side busbar can continuously adsorb anions to reduce the concentration of anions in the cathode flow electrode, the removal effect of ions can be strengthened.

[0020] In the application, the above technical solutions can be combined with each other to realize more preferred combination solutions. Other features and advantages of the application will be described in the subsequent description, and some advantages will become apparent from the description or be understood by implementing the application. The purposes and other advantages of the application can be realized and obtained from the specific indications in the description, the embodiments and the drawings.BRIEF DESCRIPTION OF DRAWINGS BRIEF DESCRIPTION OF DRAWINGS

[0021] The accompanying drawings are included to provide a further understanding of the application and are incorporated in and constitute a part of this specification, illustrate embodiments of the application and together with the description serve to explain the principles of the application. In the drawings:

[0022] Figure 1 Structure diagram of the high-salt mine water treatment device provided in the first embodiment of the application;

[0023] Figure 2 Structure diagram of the flow electrode capacitive deionization assembly in the high-salt mine water treatment device provided in the first embodiment of the application;

[0024] Figure 3 Exploded view of the flow electrode capacitive deionization assembly in the high-salt mine water treatment device provided in the first embodiment of the application;

[0025] Figure 4 Structure diagram of the water outlet pipe in the high-salt mine water treatment device provided in the first embodiment of the application;

[0026] Figure 5 Flow chart of the high-salt mine water treatment method provided in the second embodiment of the application.

[0027] Figure 6a Low-magnification scanning electron microscope image of H2O(g)-NaCl-HNO3 / CN prepared in the high-salt mine water treatment method provided in the second embodiment of the application;

[0028] Figure 6b High-magnification scanning electron microscope image of H2O(g)-NaCl-HNO3 / CN prepared in the high-salt mine water treatment method provided in the second embodiment of the application;

[0029] Figure 7 Diagram showing the change in the system desalination amount after seven adsorption-desorption cycles in the high-salt mine water treatment method provided in the second embodiment of the application.

[0030] REFERENCE NUMERALS:

[0031] 1-Anode flowing electrode tank; 2-Cathode flowing electrode tank; 3-High-salt mine water tank; 4-Purified water tank; 5-Flowing electrode capacitor deionization assembly; 51-Anode side end plate; 52-Anode side manifold; 521-Straight flow channel; 522-Arc-shaped flow channel; 53-Cation exchange membrane; 54-Treatment liquid chamber plate; 55-Anion exchange membrane; 56-Cathode side manifold; 57-Cathode side end plate; 58-Treatment liquid inlet pipe; 59-Treatment liquid outlet pipe; 510-Anode side flowing electrode 511 - Anode-side flow electrode outlet pipe; 512 - Cathode-side flow electrode inlet pipe; 513 - Cathode-side flow electrode outlet pipe; 514 - Gasket; 6 - Anode peristaltic pump; 7 - Cathode peristaltic pump; 8 - Mine water peristaltic pump; 9 - Conductivity meter; 10 - Power supply; 11 - L-shaped mounting rod; 12 - Drive gear; 13 - Water outlet pipe; 131 - First pipe body; 132 - Second pipe body; 133 - Flange; 14 - Drive rack; 15 - Inner brush; 16 - Outer brush. Detailed Implementation

[0032] The preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings, which constitute a part of the present invention and are used together with the embodiments of the present invention to illustrate the principles of the present invention, but are not intended to limit the scope of the present invention.

[0033] Example 1

[0034] This embodiment provides a treatment device for high-salinity mine water. See [link to device]. Figure 1 The system includes an anode flowing electrode tank 1, a cathode flowing electrode tank 2, a high-salt mine water tank 3, a purified water tank 4, and a flowing electrode capacitor deionization assembly 5. The flowing electrode capacitor deionization assembly 5 includes an anode-side current collector 52 (e.g., a graphite current collector), a cation exchange membrane 53, a treatment liquid chamber plate 54, an anion exchange membrane 55, and a cathode-side current collector 56 (e.g., a graphite current collector) stacked in sequence. The anode flowing electrode tank 1 and the anode-side current collector 52 are connected to form an anode flowing electrode circulation loop, and the cathode flowing electrode tank 2 and the cathode-side current collector 56 are connected to form a cathode flowing electrode circulation loop. The high-salt mine water tank 3, the treatment liquid chamber plate 54, and the purified water tank 4 are connected in sequence to form a high-salt mine water and purified water circulation loop.

[0035] During implementation, the anode flowing electrode flows in the anode flowing electrode circulation loop, and the cathode flowing electrode flows in the cathode flowing electrode circulation loop. Mine water is supplied from the high-salt mine water tank 3 into the treatment liquid chamber plate 54. Under the action of an electric field generated between the anode flowing electrode and the cathode flowing electrode, cations enter the anode side flow channel of the anode side current collector plate 52 through the cation exchange membrane 53, and anions enter the cathode side flow channel of the cathode side current collector plate 56 through the anion exchange membrane 55, so that the high-salt mine water becomes clean water and flows into the clean water tank 4, thus completing the treatment of the high-salt mine water.

[0036] Compared with the prior art, the high-salt mine water treatment device provided by the embodiment adopts a flow electrode capacitive deionization assembly 5 (i.e., an FCDI assembly), and in the process of treating the high-salt mine water, the high-salt mine water, the anode flow electrode, and the cathode flow electrode are always in a flowing state. The uninterrupted treatment of the high-salt mine water effectively improves the treatment efficiency of the high-salt mine water, so that the high-salt mine water can be treated for a long time and in large quantities. At the same time, the anode side current collector plate 52 can continuously adsorb cations to reduce the concentration of cations in the anode flow electrode, and the cathode side current collector plate 56 can continuously adsorb anions to reduce the concentration of anions in the cathode flow electrode, so that the removal effect of ions can be enhanced.

[0037] It can be understood that, in order to facilitate the flow of the anode flow electrode, an anode peristaltic pump 6 is arranged on the connecting pipeline between the anode flow electrode tank 1 and the anode side current collector plate 52, and the anode peristaltic pump 6 provides the flow power of the anode flow electrode.

[0038] Similarly, in order to facilitate the flow of the cathode flow electrode, a cathode peristaltic pump 7 is arranged on the connecting pipeline between the cathode flow electrode tank 2 and the cathode side current collector plate 56, and the cathode peristaltic pump 7 provides the flow power of the cathode flow electrode.

[0039] In order to facilitate the flow of the high-salt mine water, a mine water peristaltic pump 8 is arranged on the connecting pipeline between the high-salt mine water tank 3 and the treatment liquid cavity plate 54, and the mine water peristaltic pump 8 provides the flow power of the high-salt mine water.

[0040] In order to realize real-time understanding of the salt concentration of the mine water in the high-salt mine water tank 3, the high-salt mine water treatment device further comprises an electric conductivity meter 9, and the detection end of the electric conductivity meter 9 is inserted below the liquid level of the mine water in the high-salt mine water tank 3 to realize real-time detection of the electric conductivity change of the high-salt mine water, so as to know the salt concentration change.

[0041] Exemplarily, for the structure of the flow electrode capacitive deionization assembly 5, refer to Figures 2 to 3 Further comprising a treatment liquid inlet pipe 58, a treatment liquid outlet pipe 59, an anode side flow electrode inlet pipe 510, an anode side flow electrode outlet pipe 511, a cathode side flow electrode inlet pipe 512, and a cathode side flow electrode outlet pipe 513. The treatment liquid inlet pipe 58 and the treatment liquid outlet pipe 59 are arranged on the end face of the treatment liquid cavity plate 54 and communicate with the inner cavity of the treatment liquid cavity plate 54. The anode side flow electrode inlet pipe 510 and the anode side flow electrode outlet pipe 511 are arranged on the side edge face of the anode side current collector plate 52 and communicate with the anode side flow channel in the anode side current collector plate 52. The cathode side flow electrode inlet pipe 512 and the cathode side flow electrode outlet pipe 513 are arranged on the side edge face of the cathode side current collector plate 56 and communicate with the cathode side flow channel in the cathode side current collector plate 56.

[0042] It should be noted that for the plate structure, generally includes six faces, wherein the end face refers to two larger area of the plane, side edge face refers to the connection between the two end face of four smaller area of the plane.

[0043] The flow electrode capacitive deionization assembly 5 with the structure changes the original pipeline setting mode. On the one hand, the treatment liquid inlet pipe 58 and the treatment liquid outlet pipe 59 are arranged on the end face of the treatment liquid chamber plate 54, and the thickness of the treatment liquid chamber plate 54 does not need to consider the treatment liquid inlet pipe 58 and the treatment liquid outlet pipe 59, thereby greatly reducing the thickness of the treatment liquid chamber plate 54, and further reducing the distance between the anode side current collecting plate 52 and the cathode side current collecting plate 56, and effectively improving the treatment efficiency.

[0044] On the other hand, the anode side flow electrode inlet pipe 510 and the anode side flow electrode outlet pipe 511 are arranged on the side edge face of the anode side current collecting plate 52, the cathode side flow electrode inlet pipe 512 and the cathode side flow electrode outlet pipe 513 are arranged on the side edge face of the cathode side current collecting plate 56, the liquid inlet direction and the liquid outlet direction of the anode side flow electrode are parallel to the anode side current collecting plate 52, and the liquid inlet direction and the liquid outlet direction of the cathode side flow electrode are parallel to the cathode side current collecting plate 56, the flow resistance of the flow electrode is greatly reduced, and the clogging of the anode side flow channel of the anode side current collecting plate 52 and the cathode side flow channel of the cathode side current collecting plate 56 can be effectively reduced.

[0045] In the prior art, the thickness ratio of the anode side current collecting plate 52 or the cathode side current collecting plate 56 to the treatment liquid chamber plate 54 is 1:1, and in the embodiment, the thickness ratio of the anode side current collecting plate 52 or the cathode side current collecting plate 56 to the treatment liquid chamber plate 54 is 15-25:1 (for example, 20:1).

[0046] In order to improve the overall structural strength of the flow electrode capacitive deionization assembly 5, the flow electrode capacitive deionization assembly 5 further includes an anode side end plate 51 (for example, an organic glass end plate) and a cathode side end plate 57 (for example, an organic glass end plate), wherein the anode side end plate 51 is arranged on the side of the anode side current collecting plate 52 away from the cation exchange membrane 53, and the cathode side end plate 57 is arranged on the side of the cathode side current collecting plate 56 away from the anion exchange membrane 55, and a plurality of plate bodies are clamped between the anode side end plate 51 and the cathode side end plate 57, thereby improving the overall structural strength of the flow electrode capacitive deionization assembly 5.

[0047] In order to seal and buffer between each component, the high-salt mine water treatment device further comprises gaskets 514 (for example, silica gel gaskets 514) respectively arranged between the anode side end plate 51 and the anode side current collector plate 52, between the anode side current collector plate 52 and the cation exchange membrane 53, between the cation exchange membrane 53 and the treatment liquid cavity plate 54, between the treatment liquid cavity plate 54 and the anion exchange membrane 55, between the anion exchange membrane 55 and the cathode side current collector plate 56, and between the cathode side current collector plate 56 and the cathode side end plate 57.

[0048] It can be understood that in order to form an electric field, the high-salt mine water treatment device further comprises a power supply 10 (for example, a 1.2V direct current power supply 10), the positive electrode of the power supply 10 is connected with the anode side current collector plate 52 and / or the anode side end plate 51, and the negative electrode of the power supply 10 is connected with the cathode side current collector plate 56 and / or the cathode side end plate 57.

[0049] For the structure of the anode side flow channel of the anode side current collector plate 52 and the cathode side flow channel of the cathode side current collector plate 56, in order to reduce the flow resistance of the anode flow electrode and the cathode flow electrode, the shapes of both are serpentine, including a plurality of parallel straight flow channels 521 and arc-shaped flow channels 522 connecting the heads and tails of adjacent two straight flow channels 521, so that in the process of flowing from a front straight flow channel 521 into a rear straight flow channel 521, the cross-sectional area of the flow channel is appropriately increased through the arrangement of the arc-shaped flow channel 522, the flow resistance of the anode flow electrode and the cathode flow electrode is reduced, and the plugging of the anode side flow channel of the anode side current collector plate 52 and the cathode side flow channel of the cathode side current collector plate 56 is greatly improved.

[0050] It is worth noting that some impurities will inevitably exist in the high-salt mine water, which is easy to cause the plugging of the outlet pipe of the high-salt mine water tank. However, since the outlet pipe extends below the liquid level of the high-salt mine water, if cleaned, the treatment of the high-salt mine water needs to be temporarily stopped, and the process is complex. In the embodiment, the outlet pipe 13 is a telescopic pipe, that is, it comprises a first pipe body 131 and a second pipe body 132, the second pipe body 132 is sleeved on the outer wall of the first pipe body 131 and is in slidable sealing connection with the first pipe body 131, the first pipe body 131 is located outside the tank body of the high-salt mine water tank, the second pipe body 132 is located inside the tank body of the high-salt mine water tank, and the end of the second pipe body 132 close to the first pipe body 131 is provided with a flange 133, and the flange 133 is located outside the tank body of the high-salt mine water tank.

[0051] The high-salt mine water treatment device further comprises a dredging assembly, which comprises an in-pipe brush 15, the brush rod end of the in-pipe brush 15 is fixedly connected with the first pipe body 131, the brush end of the in-pipe brush 15 protrudes into the second pipe body 132, the bristles of the in-pipe brush 15 are in contact with the inner wall of the second pipe body 132, and the in-pipe brush 15 is in contact with the bristles of the in-pipe brush 15. The bristles of the in-pipe brush 15 are in contact with the inner wall of the second pipe body 132, see Figure 4In this way, the operator pulls the flange 133 back and forth, so that the second tube body 132 moves relative to the first tube body 131, and the brush 15 in the tube can brush the inner wall of the second tube body 132.

[0052] In order to be able to brush the water inlet end of the water outlet pipe, the above-mentioned dredging assembly further comprises a brush 16 outside the tube, a driving rack 14, a driving gear 12 and an L-shaped mounting rod 11, the driving rack 14 is arranged on the outer wall of the second tube body 132, the driving gear 12 is vertically engaged with the driving rack 14, one end of the L-shaped mounting rod 11 is fixedly connected with the driving gear 12, and the other end of the L-shaped mounting rod 11 is fixedly connected with the brush rod end of the brush 16 outside the tube, and the other end of the brush 16 outside the tube is located below the water inlet end of the water outlet pipe and the brush 16 outside the tube is in contact with the water inlet end of the water outlet pipe. In this way, when the second tube body 132 moves up and down reciprocally, the rack moves up and down reciprocally, and then drives the driving gear 12 to rotate and the L-shaped mounting rod 11 to swing, so that the brush 16 outside the tube swings reciprocally relative to the water inlet end of the water outlet pipe, and the water inlet end of the water outlet pipe is brushed.

[0053] It should be noted that through the improvement of the structure of the water outlet pipe 13 and the setting of the dredging assembly, the inner wall of the second tube body 132 and the water inlet end of the water outlet pipe can be brushed at the same time without disassembling the water outlet pipe 13, thereby reducing the situation that the water outlet pipe 13 is blocked.

[0054] Embodiment two

[0055] The embodiment provides a high-salinity mine water treatment method, and the high-salinity mine water treatment device in embodiment one is used, see Figure 5 , and the method comprises the following steps.

[0056] Step 1: turn on the power supply, the anode peristaltic pump, the cathode peristaltic pump and the mine water peristaltic pump.

[0057] Step 2: the anode flow electrode flows in the anode flow electrode circulation loop, the cathode flow electrode flows in the cathode flow electrode circulation loop, and the mine water is supplied from the high-salinity mine water tank into the treatment liquid cavity plate.

[0058] Step 3: under the action of the electric field generated between the anode flow electrode and the cathode flow electrode, the cations in the high-salinity mine water enter the anode side flow channel of the anode side collector plate through the cation exchange membrane, and the anions in the high-salinity mine water enter the cathode side flow channel of the cathode side collector plate through the anion exchange membrane, so that the high-salinity mine water becomes clean water and flows into the clean water tank, and the treatment of the high-salinity mine water is completed.

[0059] Compared with the prior art, the high-salinity mine water treatment method provided in the embodiment has basically the same beneficial effects as the high-salinity mine water treatment device provided in embodiment one, and thus will not be described here.

[0060] Exemplarily, the above step 1 further comprises the following steps before step 1:

[0061] Preparation of anode flow electrode and cathode flow electrode, both of which have the same composition, and each include 2-5% of porous carbon-based electrode material and 0.5-1.2% of superconducting carbon black by mass percentage, and the rest is 1 g / L of NaCl solution.

[0062] The porous carbon-based electrode material is prepared by the following method:

[0063] Step 1: Put sucrose, melamine, potassium chloride and sodium chloride (mass ratio of 1:1.8-2.1:1.8-2.1:1.8-2.1) into an agate mortar and grind for 1.0-1.5 h to obtain a uniformly mixed powder;

[0064] Step 2: Put the mixed powder into a porcelain boat and place the porcelain boat in a tube furnace. Heat and keep warm. The temperature rising process is as follows: pre-activation at 220-280℃ for 1-2 h, then heat to 650-750℃ and keep warm for 1.5-2.5 h, the heating rate is 8-11℃ / min, and water vapor is introduced for surface etching during the warm-keeping process (when water vapor is introduced, the front end of the pipeline is wrapped with quartz wool to prevent water vapor from condensing and liquefying too early), the flow rate of water vapor is 0.8-1.1 g / min, and the carbon-based material (H2O(g)-NaCl / CN material) is obtained;

[0065] Step 3: After the carbon-based material is cooled to room temperature, it is washed with deionized water to remove the residual potassium chloride and sodium chloride in the carbon-based material;

[0066] Step 4: Concentrated nitric acid (mass concentration of 50-65%) is used to stir and soak the washed carbon-based material for 8-12 h. After filtration and separation, the solid part is washed to neutral with deionized water and dried in a 70-80℃ oven for 20-24 h to obtain the porous carbon-based electrode material (H2O(g)-NaCl-HNO3 / CN).

[0067] By using this preparation method, sucrose is used as a carbon source, melamine is used as a nitrogen source, and potassium chloride and sodium chloride are used as template agents. On the one hand, the introduction of nitrogen atoms into the carbon matrix not only increases the defect states of the carbon-based material, but also adjusts the electronic structure of the porous carbon-based electrode material by forming C-N bonds to provide more transmission channels for electrons, significantly improving the electrical conductivity of the porous carbon-based electrode material. High electrical conductivity can accelerate the transmission rate of electrons in the flowing electrode, thereby improving the reaction rate and overall performance of the flowing electrode. On the other hand, at high temperatures, the interaction between water vapor and the carbon-based material effectively removes disordered carbon and volatile impurities in the carbon-based material. At the same time, abundant microporous and mesoporous structures are generated. These porous structures not only increase the specific surface area of the porous carbon-based electrode material, providing more active sites for electrochemical reactions, but also improve the transmission path of ions and electrons, reducing transmission impedance. At the same time, the porous structure helps to buffer the volume expansion of the flowing electrode during the charging and discharging process, improving the structural stability of the flowing electrode. On the other hand, nitric acid activation can introduce oxygen-containing functional groups such as hydroxyl, carboxyl, and carbonyl groups onto the surface of the carbon-based material. These functional groups can increase the surface polarity of the porous carbon-based electrode material. At the same time, the acid washing process generates microporous and nanoscale gap structures on the surface of the carbon-based material, thereby increasing its specific surface area and helping to improve the adsorption capacity.

[0068] The porous carbon-based electrode material was prepared according to the following process parameters:

[0069] (1) Sucrose, melamine, potassium chloride, and sodium chloride were weighed at 10 g, 20 g, 20 g, and 20 g, respectively, and placed in a marquetry mortar for grinding. After 1 hour of thorough grinding, a uniformly mixed sample was obtained. The mixed sample was placed in a porcelain boat and placed in a tube furnace. The tube furnace program was set to pre-activate at a temperature of 280°C for 1 hour, then increase to 750°C for 2 hours, with a heating rate of 10°C / min. During the holding process, water vapor was introduced to etch the surface of the material, with a water vapor flow rate of 1 g / min. After the carbonization process, the H2O(g)-NaCl / CN was removed and the residual salt in the material was washed away with deionized water until the conductivity of the filtrate was less than 5 μm / cm.

[0070] (2) The H2O(g)-NaCl / CN was stirred and soaked in 50% nitric acid for 12 hours. After soaking, the sample was filtered and washed with deionized water until it was neutral. The sample was then dried in an 80°C oven for 24 hours to obtain H2O(g)-NaCl-HNO3 / CN.

[0071] The electron microscope image of the prepared H2O(g)-NaCl-HNO3 / CN microstructure is shown in Figure 6a and Figure 6b The image shows a large number of hierarchical pores and unique and orderly arranged reticular honeycomb structures, and the material surface is evenly distributed with a large amount of C, N, and O elements.

[0072] The variation of the system desalination amount of the high-salt well water treatment method of the present application after seven adsorption-desorption cycles is shown in Figure 7 The desalination retention rate thereof after seven cycles can still reach 95.71%, which shows that the material has good regeneration and stable cyclic use performance.

[0073] The above description is only the preferred specific implementation of the present application, but the protection scope of the present application is not limited to this. Any change or replacement that can be easily thought of by those skilled in the art within the technical range disclosed by the present application should be covered in the protection scope of the present application.

Claims

1. A device for treating high-salinity mine water, characterized by It includes an anode flow electrode tank, a cathode flow electrode tank, a high-salt mine water tank, a purified water tank, and a flow electrode capacitor deionization assembly; The flowing electrode capacitor deionization assembly includes an anode-side current collector, a cation exchange membrane, a treatment liquid chamber plate, an anion exchange membrane, and a cathode-side current collector stacked sequentially. The anode flowing electrode tank and the anode-side current collector are connected to form an anode flowing electrode circulation loop. The cathode flowing electrode tank and the cathode-side current collector are connected to form a cathode flowing electrode circulation loop. The high-salt mine water tank, the treatment liquid chamber plate, and the purified water tank are sequentially connected to form a high-salt mine water and purified water circulation loop. The thickness ratio of the anode-side manifold or cathode-side manifold to the treatment liquid chamber plate is 15~25:1; The outlet pipe of the high-salt mine water tank is a telescopic pipe. The outlet pipe includes a first pipe body and a second pipe body. The second pipe body is sleeved on the outer wall of the first pipe body and is slidably and sealingly connected to the first pipe body. The first pipe body is located outside the tank body of the high-salt mine water tank. The second pipe body is provided with a flange at one end near the first pipe body. The second pipe body is located inside the tank body of the high-salt mine water tank. The flange is located outside the tank body of the high-salt mine water tank. The treatment device also includes a dredging component for unblocking the water pipe. The dredging component includes an internal pipe brush. The brush rod end of the internal pipe brush is fixedly connected to the first pipe body, and the bristle end of the internal pipe brush protrudes into the second pipe body. The bristles of the internal pipe brush are in contact with the inner wall of the second pipe body. The unblocking assembly also includes an external pipe brush, a drive rack, a drive gear, and an L-shaped mounting rod. The drive rack is located on the outer wall of the second pipe body, and the drive gear meshes perpendicularly with the drive rack. One end of the L-shaped mounting rod is fixedly connected to the drive gear, and the other end of the L-shaped mounting rod is fixedly connected to the brush rod end of the external pipe brush. The other end of the external pipe brush is located below the water inlet end of the outlet pipe, and the external pipe brush is in contact with the water inlet end of the outlet pipe.

2. The apparatus for treatment of high-salinity mine water according to claim 1, characterized in that, An anode peristaltic pump is installed on the connecting pipe between the anode flow electrode tank and the anode side manifold.

3. The apparatus for treatment of high-salinity mine water according to claim 1, characterized in that, A cathode peristaltic pump is installed on the connecting pipe between the cathode flow electrode tank and the cathode side manifold.

4. The apparatus for treatment of high-salinity mine water according to claim 1, characterized in that, A mine water peristaltic pump is installed on the connecting pipeline between the high-salt mine water tank and the treatment liquid chamber plate.

5. The apparatus for treatment of high-salinity mine water according to claim 1, characterized by the fact that, It also includes a conductivity meter, the detection end of which is inserted below the surface of the mine water in a high-salt mine water tank.

6. A method of treating high-salinity mine water, characterized by, The treatment method using the high-salinity mine water treatment apparatus as described in any one of claims 1 to 5 includes the following steps: The anode flowing electrode flows in the anode flowing electrode circulation loop, the cathode flowing electrode flows in the cathode flowing electrode circulation loop, and the high-salt mine water is supplied from the high-salt mine water tank into the treatment liquid chamber plate. Under the influence of the electric field generated between the anode and cathode flowing electrodes, the cations in the high-salt mine water enter the anode-side flow channel of the anode-side current collector through the cation exchange membrane, and the anions in the high-salt mine water enter the cathode-side flow channel of the cathode-side current collector through the anion exchange membrane, thereby turning the high-salt mine water into clean water that flows into the clean water tank, thus completing the treatment of the high-salt mine water.

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