Electrochemical water treatment module and water purification system

Abstract

The invention discloses an electrochemical water treatment module and a water purification system, and belongs to the technical field of water treatment. The electrochemical water treatment module comprises an anode electrode, a cathode electrode, two anion exchange membranes and two cation exchange membranes. Wherein two acidic water chambers are respectively formed between the anode electrode and the two anion exchange membranes, two alkaline water chambers are respectively formed between the cathode electrode and the two cation exchange membranes, and a water purification chamber is formed between the anion exchange membranes and the cation exchange membranes between the anode electrode and the cathode electrode. When the anode electrode and the cathode electrode are connected with a power supply, water containing electrolyte enters the electrochemical water treatment module and flows through the two acidic water chambers, the two alkaline water chambers and the purified water chamber respectively, and acidic water, purified water and alkaline water are generated under the action of electric field force. Different water qualities can be flexibly combined according to requirements, so that the electrochemical water treatment module is suitable for medical, agricultural, industrial and family scenes, and the applicability of the electrochemical water treatment module is improved.

Description

Technical Field

[0001] This application relates to the technical field of water treatment, and particularly relates to an electrochemical water treatment module and a water purification system. Background Art

[0002] With the development of production technology, in the production process and daily life, the requirements for water quality are getting higher and higher. To ensure the safety of drinking water, improve the efficiency of industrial water use, reduce environmental pollution, and meet the special needs of fields such as agriculture and medicine; physical, chemical, or biological means are usually used to remove impurities (such as suspended solids, pathogenic microorganisms, heavy metals, organic pollutants, inorganic salts, etc.) harmful to human health, industrial production, or the ecological environment in water, so as to obtain water quality that is safe, clean, and meets the requirements of specific uses.

[0003] Currently, when purifying water, capacitive deionization (English: Capacitive Deionization; abbreviation: CDI), electrodialysis (English: electrodialysis; abbreviation: ED), or reverse osmosis technology is usually used. Capacitive deionization is a desalination technology based on the principle of electroadsorption. By applying a low voltage, charged ions are adsorbed on the electrode surface, thereby achieving the removal of salts in water. Electrodialysis is an electrochemical separation technology that uses ion-selective exchange membranes and a direct current electric field to achieve desalination or concentration of a solution. Reverse osmosis is a technology that uses a semipermeable membrane to separate dissolved substances in water to achieve the purpose of purifying water.

[0004] However, when using the current technology to treat water, a large amount of wastewater is generated, which is likely to cause water resource waste and increase the risk of environmental pollution. Summary of the Invention

[0005] Embodiments of this application provide an electrochemical water treatment module and a water purification system, and the technical solutions are as follows:

[0006] According to one aspect of this application, an electrochemical water treatment module is provided. The electrochemical water treatment module includes:

[0007] An anode electrode, a cathode electrode, two anion exchange membranes, and two cation exchange membranes;

[0008] The anode electrode and the cathode electrode are arranged at intervals;

[0009] The two anion exchange membranes are respectively located on both sides of the anode electrode, and two acidic water chambers are formed between the anode electrode and the two anion exchange membranes respectively;

[0010] The two cation exchange membranes are respectively located on both sides of the cathode electrode, and two alkaline water chambers are formed between the cathode electrode and the two cation exchange membranes respectively;

[0011] A water purification chamber is formed between the anion exchange membrane and the cation exchange membrane located between the anode electrode and the cathode electrode.

[0012] Optionally, the electrochemical water treatment module further includes a plurality of water guiding grids, which are respectively located between the anode electrode and the adjacent anion exchange membrane, between the adjacent anion exchange membrane and the cation exchange membrane, and between the cathode electrode and the adjacent cation exchange membrane.

[0013] Optionally, the electrochemical water treatment module has a first water inlet, a first water outlet, a second water inlet, a second water outlet, a third water inlet and a third water outlet;

[0014] The first water inlet communicates with one end of the two acidic water chambers, and the first water outlet communicates with the other end of the two acidic water chambers;

[0015] The second water inlet communicates with one end of the water purification chamber, and the second water outlet communicates with the other end of the water purification chamber;

[0016] The third water inlet communicates with one end of the two alkaline water chambers, and the third water outlet communicates with the other end of the two alkaline water chambers.

[0017] Optionally, both the cathode electrode and the anode electrode include a first adsorption coating, a conductive wire mesh and a second adsorption coating which are stacked, and both the first adsorption coating and the second adsorption coating have reducibility.

[0018] Optionally, both the first adsorption coating and the second adsorption coating have a plurality of microporous structures, and the diameter range of the microporous structures is 2 nanometers to 10 nanometers.

[0019] Optionally, the materials of both the first adsorption coating and the second adsorption coating include at least one of activated carbon powder, carbon nanotubes and graphene.

[0020] According to another aspect of the present application, there is provided a water purification system, including: an electrochemical water treatment module, a water source, a plurality of first water inlet paths, a plurality of first water outlet paths, a water using outlet, a plurality of first waste water paths and a waste water discharge port;

[0021] The electrochemical water treatment module includes the above-mentioned electrochemical water treatment module, and the electrochemical water treatment module has an acidic water chamber, an alkaline water chamber and a water purification chamber;

[0022] The water inlet ends of the multiple first water inlet paths are all communicated with the water source, and the water outlet ends of the multiple first water inlet paths are respectively communicated with the water inlet of the acidic water chamber, the water inlet of the alkaline water chamber, and the water inlet of the purified water chamber;

[0023] The water inlet ends of the multiple first water outlet paths are respectively communicated with the water outlet of the acidic water chamber, the water outlet of the alkaline water chamber, and the water outlet of the purified water chamber, and the water outlet ends of the multiple first water outlet paths are all communicated with the water outlet for use;

[0024] The water inlet ends of the multiple first wastewater paths are respectively communicated with the water outlet of the acidic water chamber and the water outlet of the alkaline water chamber, and the water outlet ends of the multiple first wastewater paths are all communicated with the wastewater discharge port.

[0025] Optionally, the water purification system further includes a reverse osmosis filter element, a second water inlet path, a purified water path, and a second wastewater path;

[0026] The water inlet end of the second water inlet path is communicated with the water source, the water outlet end of the second water inlet path is communicated with the water inlet of the reverse osmosis filter element, and the reverse osmosis filter element has a purified water outlet and a wastewater outlet;

[0027] The water inlet end of the purified water path is communicated with the purified water outlet of the reverse osmosis filter element, and the water outlet end of the purified water path is communicated with the water inlet of the purified water chamber and the water inlet of the alkaline water chamber;

[0028] The water inlet end of the second wastewater path is communicated with the wastewater outlet of the reverse osmosis filter element, and the water outlet end of the second wastewater path is communicated with the water inlet of the acidic water chamber and the water inlet of the alkaline water chamber.

[0029] Optionally, the water purification system further includes an acidic water storage tank, an alkaline water storage tank, an acidic water storage path, an alkaline water storage path, a backwashing pump, a backwashing water inlet path, and a backwashing wastewater path;

[0030] The water inlet end of the acidic water storage path is communicated with the water outlet of the acidic water chamber, and the water outlet end of the acidic water storage path is communicated with the water inlet of the acidic water storage tank;

[0031] The water inlet end of the alkaline water storage path is communicated with the water outlet of the alkaline water chamber, and the water outlet end of the alkaline water storage path is communicated with the water inlet of the alkaline water storage tank;

[0032] The water inlet end of the backwashing water inlet path is communicated with the water outlets of the acidic water storage tank and the alkaline water storage tank, the water outlet end of the backwashing water inlet path is communicated with the water inlets of the acidic water chamber, the alkaline water chamber, and the purified water chamber, and the backwashing pump is installed on the backwashing water inlet path;

[0033] The water inlet end of the backwashing wastewater path is communicated with the water outlet of the acidic water chamber, the water outlet of the alkaline water chamber, and the water outlet of the purified water chamber, and the water outlet end of the backwashing wastewater path is communicated with the wastewater discharge port, the acidic water storage tank, and the alkaline water storage tank.

[0034] Optionally, the water purification system further includes a plurality of flow-limiting valves;

[0035] The plurality of flow-limiting valves are respectively installed at the water inlet of the acidic water chamber, the water inlet of the alkaline water chamber, and the water inlet of the purified water chamber.

[0036] The beneficial effects brought by the technical solution provided by the embodiment of the present application at least include:

[0037] An electrochemical water treatment module including an anode electrode, a cathode electrode, two anion exchange membranes, and two cation exchange membranes is provided. Among them, two acidic water chambers are formed between the anode electrode and the two anion exchange membranes respectively, two alkaline water chambers are formed between the cathode electrode and the two cation exchange membranes respectively, and a purified water chamber can be formed between the anion exchange membrane and the cation exchange membrane located between the anode electrode and the cathode electrode. When the anode electrode and the cathode electrode are connected to the power supply, the water containing the electrolyte will enter the electrochemical water treatment module and be divided into five parts, flowing through the two acidic water chambers, the two alkaline water chambers, and the purified water chamber respectively, and under the action of the electric field force, acidic water, purified water, and alkaline water are generated. Different water qualities can be flexibly combined according to needs, applicable to medical, agricultural, industrial, and household scenarios, improving the applicability of the electrochemical water treatment module. And it can reduce the wastewater discharge volume during the water treatment process, thereby reducing water resource waste, and can also avoid environmental pollution caused by wastewater discharge, improving the environmental protection of the electrochemical water treatment module. Description of the Drawings

[0038] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the following drawings are only some embodiments of the present application. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0039] Figure 1 is a schematic diagram of the principle of an electrochemical water treatment module provided by an embodiment of the present application;

[0040] Figure 2 is a schematic structural diagram of an electrochemical water treatment module provided by an embodiment of the present application;

[0041] Figure 3 is a schematic structural diagram of another electrochemical water treatment module provided by an embodiment of the present application;

[0042] Figure 4 It is a schematic structural diagram of a water purification system provided by an embodiment of the present application;

[0043] Figure 5 It is a schematic diagram of the liquid flow for preparing mineral purified water provided by an embodiment of the present application;

[0044] Figure 6 It is a schematic structural diagram of another water purification system provided by an embodiment of the present application;

[0045] Figure 7 It is a schematic diagram of the liquid flow for preparing ultrapure water provided by an embodiment of the present application;

[0046] Figure 8 It is a schematic diagram of the liquid flow for preparing drinking alkaline water provided by an embodiment of the present application;

[0047] Figure 9 It is a schematic diagram of the liquid flow for the activation of the electrode plate provided by an embodiment of the present application;

[0048] Figure 10 It is a schematic diagram of the liquid flow for an acid pickling process provided by an embodiment of the present application;

[0049] Figure 11 It is a schematic diagram of the liquid flow for an alkali washing process provided by an embodiment of the present application;

[0050] Figure 12 It is a schematic diagram of the liquid flow for preparing bathing acidic water provided by an embodiment of the present application.

[0051] Explanation of the reference numerals:

[0052] Electrochemical water treatment module 100, acidic water chamber w1, first acidic water chamber w11, second acidic water chamber w12, purified water chamber w2, alkaline water chamber w3, first alkaline water chamber w31, second alkaline water chamber w32; anode electrode 101; cathode electrode 102; anion exchange membrane 103, first anion exchange membrane 1031, second anion exchange membrane 1032; cation exchange membrane 104, first cation exchange membrane 1041, second cation exchange membrane 1042; water guiding grid 105; first water inlet k11, first water outlet k12, second water inlet k21, second water outlet k22, third water inlet k31, third water outlet k32; purified water system 200; water source 201, water source valve v21; multiple first water inlet paths 202, first water inlet valve v22, second water inlet valve v23 and third water inlet valve v24; multiple first water outlet paths 203, first water outlet valve v31, second water outlet valve v32 and third water outlet valve v33; water use outlet 204; first waste water path 205, first waste water valve v41, second waste water valve v42, overflow valve v43, normally open waste water valve v44; waste water discharge port 206; acidic water storage tank 207; alkaline water storage tank 208; acidic water storage path 209, first water storage valve v51; alkaline water storage path 210, second water storage valve v52; first flow limiting valve v11, second flow limiting valve v12 and third flow limiting valve v13; reverse osmosis filter element 211, purified water outlet k41, waste water port k42; second water inlet path 212, fourth water inlet valve v25; purified water path 213, first purified water valve v61, second purified water valve v62, filter element purified water valve v63; second waste water path 214, third waste water valve v64, fourth waste water valve v65 and fifth waste water valve v66; backwash pump 215; backwash water inlet path 216, acidic water valve v53, alkaline water valve v54, valve v55 before the pump, one-way valve v56; backwash waste water path 217, first connection valve v57, second connection valve v58, activation valve v59. Detailed implementation mode

[0053] To make the objectives, technical solutions and advantages of this application clearer, the following will further describe the implementation modes of this application in detail with reference to the accompanying drawings.

[0054] Although this application can be easily presented as embodiments in different forms, only some specific embodiments are shown in the drawings and will be described in detail in this specification. At the same time, it can be understood that this specification should be regarded as a demonstration of the principles of this application and is not intended to limit this application to what is described herein.

[0055] Accordingly, a feature pointed out in this specification is used to illustrate one feature of an embodiment of the present application, rather than implying that each embodiment of the present application must have the illustrated feature. In addition, it should be noted that this specification describes many features. Although certain features may be combined to show possible system designs, these features may also be used in other combinations not explicitly described. Accordingly, unless otherwise stated, the illustrated combinations are not intended to be limiting.

[0056] In the embodiments shown in the drawings, the indication of directions (such as up, down, left, right, front, and back) is used to explain that the structures and movements of various elements of the present application are not absolute but relative. When these elements are in the positions shown in the drawings, these explanations are appropriate. If the descriptions of the positions of these elements change, then the indication of these directions also changes accordingly.

[0057] Please refer to Figure 1 and Figure 2 , Figure 1 is a schematic diagram of the principle of an electrochemical water treatment module 100 provided by an embodiment of the present application. Figure 2 is a schematic structural diagram of an electrochemical water treatment module 100 provided by an embodiment of the present application. The electrochemical water treatment module 100 may include: an anode electrode 101, a cathode electrode 102, two anion exchange membranes 103, and two cation exchange membranes 104.

[0058] The anode electrode 101 and the cathode electrode 102 are arranged at intervals; the cathode electrode 102 and the anode electrode 101 may be stacked along the thickness direction of the cathode electrode 102 (or the thickness direction of the anode electrode 101), and there is a gap between the cathode electrode 102 and the anode electrode 101. Both the cathode electrode 102 and the anode electrode 101 may be electrically connected to a power source. Exemplarily, the cathode electrode 102 is electrically connected to the negative pole of a DC power source, and the anode electrode 101 is electrically connected to the positive pole of the DC power source.

[0059] The two anion exchange membranes 103 are respectively located on both sides of the anode electrode 101, and two acidic water chambers w1 are formed between the anode electrode 101 and the two anion exchange membranes 103 respectively. The two anion exchange membranes 103 and the anode electrode 101 may be stacked along the thickness direction of the anode electrode 101, and there are gaps between the two anion exchange membranes 103 and the anode electrode 101, so that the gaps between the anode electrode 101 and the anion exchange membranes 103 can form acidic water chambers w1.

[0060] Two cation exchange membranes 104 are respectively located on both sides of the cathode electrode 102, and two alkaline water chambers w3 are formed between the cathode electrode 102 and the two cation exchange membranes 104 respectively. The two cation exchange membranes 104 and the cathode electrode 102 can be stacked in the thickness direction of the cathode electrode 102, and there are gaps between the two cation exchange membranes 104 and the cathode electrode 102, so that the gaps between the cathode electrode 102 and the cation exchange membranes 104 can form alkaline water chambers w3.

[0061] A purified water chamber w2 can be formed between the anion exchange membrane 103 and the cation exchange membrane 104 located between the anode electrode 101 and the cathode electrode 102. It can be understood that in the embodiments of the present application, the acidic water chamber w1, the alkaline water chamber w3 and the purified water chamber w2 can also be referred to as an acidic water channel, an alkaline water channel and a purified water channel; that is, water containing electrolytes can flow through the acidic water chamber w1, the alkaline water chamber w3 and the purified water chamber w2, or water containing electrolytes can be temporarily stored in the acidic water chamber w1, the alkaline water chamber w3 and the purified water chamber w2.

[0062] Among them, since the anion exchange membrane 103 can only be used to pass anions; the cation exchange membrane 104 can only be used to pass cations. The substances and other impurities contained in the water containing electrolytes entering the electrochemical water treatment module 100 usually carry ions, and the ions can include sodium ions (Na + ), chloride ions (Cl — ), magnesium ions (Mg 2+ ) and calcium ions (Ca 2+ ) etc.

[0063] After the anode electrode 101 and the cathode electrode 102 are connected to a power source, the water containing the electrolyte will pass through all the acidic water chambers w1, alkaline water chambers w3 and purified water chamber w2 simultaneously. Among them, the two anion exchange membranes 103 include a first anion exchange membrane 1031 and a second anion exchange membrane 1032, the two cation exchange membranes 104 include a first cation exchange membrane 1041 and a second cation exchange membrane 1042, the two acidic water chambers w1 include a first acidic water chamber w11 and a second acidic water chamber w12, and the two alkaline water chambers w3 include a first alkaline water chamber w31 and a second alkaline water chamber w32. The first anion exchange membrane 1031 and the second anion exchange membrane 1032 are both located between the anode electrode 101 and the cathode electrode 102. The first cation exchange membrane 1041 and the second cation exchange membrane 1042 are respectively located outside the anode electrode 101 and the cathode electrode 102. The first anion exchange membrane 1031 and the second anion exchange membrane 1032 respectively enclose the first acidic water chamber w11 and the second acidic water chamber w12 with the anode electrode 101. The first cation exchange membrane 1041 and the second cation exchange membrane 1042 respectively enclose the first alkaline water chamber w31 and the second alkaline water chamber w32 with the cathode electrode 102. The first acidic water chamber w11 and the first alkaline water chamber w31 are both located between the anode electrode 101 and the cathode electrode 102. The second acidic water chamber w12 and the second alkaline water chamber w32 are respectively located outside the anode electrode 101 and the cathode electrode 102.

[0064] Driven by the electric field force, the cations in the water containing the electrolyte can migrate directionally towards the cathode electrode 102, and the anions can migrate directionally towards the anode electrode 101. Exemplarily, the cations in the purified water chamber w2 migrate towards the cathode electrode 102 through the first cation exchange membrane 1041, and the anions in the purified water chamber w2 migrate towards the anode electrode 101 through the first anion exchange membrane 1031, so that the water in the purified water chamber w2 between the first cation exchange membrane 1041 and the first anion exchange membrane 1031 loses cations and anions and generates deionized water. The water in the first acidic water chamber w11 between the anode electrode 101 and the first anion exchange membrane 1031, and the water in the second acidic water chamber w12 between the anode electrode 101 and the second anion exchange membrane 1032 can both undergo electrolysis reactions. That is to say, an oxidation reaction occurs on both sides of the anode electrode, and water molecules lose electrons and are converted into oxygen and hydrogen ions, thereby generating acidic water. The water in the first alkaline water chamber w31 between the cathode electrode 102 and the first cation exchange membrane 1041, and the water in the second alkaline water chamber w32 between the cathode electrode 102 and the second cation exchange membrane 1042 can also both undergo electrolysis reactions. That is to say, a reduction reaction occurs on both sides of the cathode electrode, and hydrogen ions gain electrons to form hydrogen and hydroxide ions, thereby generating alkaline water.

[0065] Thus, the raw water (i.e., the water to be treated) entering the electrochemical water treatment module 100 is divided into five portions and flows through two acidic water chambers w1, two alkaline water chambers w3, and a purified water chamber w2 respectively. Under the action of the electric field force, acidic water, purified water, and alkaline water are generated. The generated alkaline water can be used for cleaning and decontamination, such as industrial degreasing and kitchen oil cleaning with alkaline water; the generated acidic water can be used for sterilization and disinfection, such as cleaning and disinfecting food processing equipment and medical devices with acidic water; the generated purified water can be used for drinking and domestic water. Different water qualities can be flexibly combined according to needs, which is applicable to medical, agricultural, industrial, and household scenarios, improving the applicability of the electrochemical water treatment module 100. Moreover, the waste water discharge during the water treatment process can be reduced, thereby reducing water resource waste, and the environmental pollution caused by waste water discharge can also be avoided, improving the environmental friendliness of the electrochemical water treatment module 100.

[0066] In summary, the embodiment of the present application provides an electrochemical water treatment module 100 including an anode electrode 101, a cathode electrode 102, two anion exchange membranes 103, and two cation exchange membranes 104. Among them, two acidic water chambers w1 are formed between the anode electrode 101 and the two anion exchange membranes 103 respectively, two alkaline water chambers w3 are formed between the cathode electrode 102 and the two cation exchange membranes 104 respectively, and a purified water chamber w2 can be formed between the anion exchange membrane 103 and the cation exchange membrane 104 located between the anode electrode 101 and the cathode electrode 102. When the anode electrode 101 and the cathode electrode 102 are connected to the power supply, the water containing electrolytes will enter the electrochemical water treatment module and be divided into five portions and flow through two acidic water chambers w1, two alkaline water chambers w3, and a purified water chamber w2 respectively. Under the action of the electric field force, acidic water, purified water, and alkaline water are generated. Different water qualities can be flexibly combined according to needs, which is applicable to medical, agricultural, industrial, and household scenarios, improving the applicability of the electrochemical water treatment module 100. Moreover, the waste water discharge during the water treatment process can be reduced, thereby reducing water resource waste, and the environmental pollution caused by waste water discharge can also be avoided, improving the environmental friendliness of the electrochemical water treatment module 100.

[0067] In an alternative embodiment, the electrochemical water treatment module 100 may further include a plurality of water guiding grids 105, which are respectively located between the anode electrode 101 and the adjacent anion exchange membrane 103, between the adjacent anion exchange membranes 103 and the cation exchange membrane 104, and between the cathode electrode 102 and the adjacent cation exchange membrane 104. The water guiding grid 105 may be a diamond-shaped or honeycomb-shaped grid structure, and the water guiding grid 105 can be used to optimize the fluid distribution, guide the water flow to uniformly pass through the surfaces of the electrodes or ion exchange membranes, avoid the occurrence of dead zones, improve the reaction efficiency of the electrochemical water treatment module 100, and also enhance the support for the ion exchange membranes and electrodes, preventing the ion exchange membranes or electrodes from collapsing or deforming under high pressure or flow.

[0068] Exemplarily, the material of the water guiding grid 105 may include polypropylene (English: Polypropylene; Abbreviation: PP), polyvinyl chloride (English: Polyvinyl chloride; Abbreviation: PVC), and polytetrafluoroethylene (English: Polytetrafluoro-Ethylene; Abbreviation: PTFE).

[0069] In an alternative embodiment, the electrochemical water treatment module 100 has a first water inlet k11, a first water outlet k12, a second water inlet k21, a second water outlet k22, a third water inlet k31, and a third water outlet k32.

[0070] The first water inlet k11 communicates with one end of two acidic water chambers w1, and the first water outlet k12 communicates with the other end of two acidic water chambers w1; the second water inlet k21 communicates with one end of the purified water chamber w2, and the second water outlet k22 communicates with the other end of the purified water chamber w2; the third water inlet k31 communicates with one end of two alkaline water chambers w3, and the third water outlet k32 communicates with the other end of two alkaline water chambers w3. In this way, different functional waters will be generated in different chambers, and each chamber has its own inlet and outlet pipelines, enabling the electrochemical water treatment module 100 to realize the switching application of three water qualities: purified water, alkaline water, and acidic water.

[0071] Please refer to Figure 3 , Figure 3FIG. 0 is a schematic structural diagram of another electrochemical water treatment module 100 provided by an embodiment of the present application. In an exemplary embodiment, a plurality of electrochemical water treatment modules 100 can be combined for application to meet the needs of users in different situations. Since both ends of the electrochemical water treatment module 100 in the embodiment of the present application are respectively an anion exchange membrane 103 and a cation exchange membrane 104, when combining a plurality of electrochemical water treatment modules 100, arranging and combining the plurality of electrochemical water treatment modules 100 is sufficient, without the need to modify the electrochemical water treatment module 100, which can reduce the difficulty of using a plurality of electrochemical water treatment modules 100 in combination.

[0072] In an alternative embodiment, both the cathode electrode 102 and the anode electrode 101 include a first adsorption coating, a conductive wire mesh, and a second adsorption coating arranged in a stacked manner, and both the first adsorption coating and the second adsorption coating have reducibility. Optionally, both the first adsorption coating and the second adsorption coating have a plurality of microporous structures, and the diameter range of the microporous structures is 2 nanometers to 10 nanometers, which can make both the cathode electrode 102 and the anode electrode 101 have a relatively high specific surface area. Exemplarily, the diameter of the microporous structure is 2 nanometers, 3 nanometers, 6 nanometers, 8 nanometers, or 10 nanometers.

[0073] Optionally, the materials of both the first adsorption coating and the second adsorption coating include at least one of activated carbon powder, carbon nanotubes, and graphene.

[0074] In the electrochemical water treatment module 100 in the related art, in order to ensure the service life of the electrode, noble metal coating electrodes are usually used. Such electrodes have the characteristics of low chlorine evolution potential and easy catalytic generation of hypochlorite ions. In some water use environments where contact with the human body occurs and only water quality acidification is required without hypochlorite ions, this characteristic will bring safety risks. Compared with the electrodes in the related art, in the embodiment of the present application, a capacitive adsorption electrode (the manufacturing material can include activated carbon powder) is used in the electrochemical water treatment module 100. In the preparation of acidic water, the processing cost of the activated carbon material is lower than that of the noble metal electrode, and when the working voltage exceeds the water decomposition voltage (1.23V), hydrogen (H + ) can be preferentially generated through a hydrolysis reaction to achieve water quality acidification. At the same time, due to the reducibility of activated carbon, the generation of hypochlorous acid can be effectively inhibited, avoiding the generation of strong oxidizing by-products, and improving the water quality safety.

[0075] In the aspect of purified water preparation, the capacitive adsorption electrode can improve the desalination efficiency through the double-layer adsorption effect. Also, due to the relatively large specific surface area of the capacitive adsorption electrode, during the use of the capacitive electrode, the acidic water chamber w1 and the alkaline water chamber w3 can maintain static water for a certain period of time. That is to say, the static water operation of the acidic water chamber w1 and the alkaline water chamber w3 can be realized, breaking through the limitation of continuous water flow in the traditional electrodialysis method. While alleviating the problem of concentration polarization, it can also synchronously enrich high-concentration acid and alkali solutions for special cleaning scenarios (such as toilet brushing and oil stain treatment, etc.).

[0076] In this way, the electrochemical water treatment module 100 in the embodiment of the present application can achieve a more efficient water treatment effect by using the capacitive adsorption electrode and the ion exchange membrane, comprehensively combining two water treatment methods of capacitive deionization and electrodialysis, and can also meet the water quality adjustment requirements for multi-functional household water use.

[0077] In an exemplary embodiment, the electrode in the embodiment of the present application can also use other conductive electrodes such as graphite sheets, ruthenium-iridium electrodes, ruthenium electrodes, and platinum electrodes. The ion exchange membrane in the embodiment of the present application can also be replaced with a bipolar membrane, a proton exchange membrane, or other membrane materials with ion separation functions.

[0078] Please refer to Figure 4 , Figure 4 FIG. is a schematic structural diagram of a purified water system 200 provided by an embodiment of the present application. The purified water system 200 may include: an electrochemical water treatment module 100, a water source 201, a plurality of first water inlet paths 202, a plurality of first water outlet paths 203, a water use outlet 204, a plurality of first wastewater paths 205, and a wastewater discharge port 206.

[0079] The electrochemical water treatment module includes the electrochemical water treatment module 100 in any of the above embodiments. The electrochemical water treatment module 100 has an acidic water chamber w1, an alkaline water chamber w3, and a purified water chamber w2. The electrochemical water treatment module 100 may have a plurality of acidic water chambers w1, a plurality of alkaline water chambers w3, and at least one purified water chamber w2. The plurality of acidic water chambers w1 may share one water inlet and one water outlet. The plurality of alkaline water chambers w3 may share one water inlet and one water outlet. At least one purified water chamber w2 may use one water inlet and one water outlet.

[0080] The water inlet ends of multiple first water inlet paths 202 are all communicated with a water source 201, and the water outlet ends of the multiple first water inlet paths 202 are respectively communicated with the water inlet of an acidic water chamber w1, the water inlet of an alkaline water chamber w3, and the water inlet of a purified water chamber w2. The water source 201 may include a water storage tank for water to be treated, or tap water, etc. The water source 201 can be respectively communicated with the water inlet of the acidic water chamber w1, the water inlet of the alkaline water chamber w3, and the water inlet of the purified water chamber w2 through the multiple first water inlet paths 202 to provide the water to be treated for the electrochemical water treatment module 100.

[0081] The water inlet ends of multiple first water outlet paths 203 are respectively communicated with the water outlet of the acidic water chamber w1, the water outlet of the alkaline water chamber w3, and the water outlet of the purified water chamber w2, and the water outlet ends of the multiple first water outlet paths 203 are all communicated with a water outlet for use 204. The water outlet for use 204 may include a water tap. The water outlet for use 204 can be respectively communicated with the water outlet of the acidic water chamber w1, the water outlet of the alkaline water chamber w3, and the water outlet of the purified water chamber w2 through the multiple first water outlet paths 203, so that multifunctional water can flow out from the water outlet for use 204.

[0082] The water inlet ends of multiple first waste water paths 205 are respectively communicated with the water outlet of the acidic water chamber w1 and the water outlet of the alkaline water chamber w3, and the water outlet ends of the multiple first waste water paths 205 are all communicated with a waste water discharge port 206. The waste water discharge port 206 may include a waste water collection tank or a sewer. The waste water discharge port 206 can be respectively communicated with the water outlet of the acidic water chamber w1 and the water outlet of the alkaline water chamber w3 through the multiple first waste water paths 205.

[0083] When using the water purification system 200 to generate purified water, the cathode electrode 102 and the anode electrode 101 can be energized, and the energization voltage ≤ 1.5V. The raw water enters the electrochemical water treatment module 100 simultaneously from three paths: the water inlet of the acidic water chamber w1, the water inlet of the alkaline water chamber w3, and the water inlet of the purified water chamber w2. The water outlet of the purified water chamber w2 is communicated with the water outlet for use 204 used by users, and the water outlets of the acidic water chamber w1 and the alkaline water chamber w3 can be connected to a waste water pipeline.

[0084] Alternatively, the water flowing out from the water outlets of the acidic water chamber w1 and the alkaline water chamber w3 can also be recycled through a water storage bucket, or the water inlet and outlet valves can be closed after the acidic water chamber w1 and the alkaline water chamber w3 are filled with water (to ensure the conduction of the circuit between the electrodes and the ion exchange membranes), so that the acidic water chamber w1 and the alkaline water chamber w3 are kept in a static state.

[0085] Thus, different concentrations of acidic water, different concentrations of alkaline water, pure water, or mineral purified water with incomplete removal of ions in water can be prepared using the water purification system 200. It is understandable that mineral purified water does not add minerals but retains some calcium, magnesium, sodium, and potassium ions in the water and only removes high-valent heavy metal ions, which is clean water.

[0086] In an alternative embodiment, the water purification system 200 may further include an acidic water storage tank 207, an alkaline water storage tank 208, an acidic water storage pipeline 209, and an alkaline water storage pipeline 210. The inlet end of the acidic water storage pipeline 209 is communicated with the outlet of the acidic water chamber w1, and the outlet end of the acidic water storage pipeline 209 is communicated with the inlet of the acidic water storage tank 207. The inlet end of the alkaline water storage pipeline 210 is communicated with the outlet of the alkaline water chamber w3, and the outlet end of the alkaline water storage pipeline 210 is communicated with the inlet of the alkaline water storage tank 208.

[0087] In an alternative embodiment, the water purification system 200 may further include a plurality of flow limiting valves. The plurality of flow limiting valves are respectively installed at the inlet of the acidic water chamber w1, the inlet of the alkaline water chamber w3, and the inlet of the purified water chamber w2. The plurality of flow limiting valves include a first flow limiting valve v11, a second flow limiting valve v12, and a third flow limiting valve v13. The first flow limiting valve v11, the second flow limiting valve v12, and the third flow limiting valve v13 are respectively installed at the inlet of the acidic water chamber w1, the inlet of the alkaline water chamber w3, and the inlet of the purified water chamber w2.

[0088] In an exemplary embodiment, the water source 201 may include a water source pipeline and a water source valve v21. The plurality of first water inlet pipelines 202 may include a first water inlet pipeline, a second water inlet pipeline, a third water inlet pipeline, a first water inlet valve v22, a second water inlet valve v23, and a third water inlet valve v24. The first water inlet valve v22, the second water inlet valve v23, and the third water inlet valve v24 are respectively arranged on the first water inlet pipeline, the second water inlet pipeline, and the third water inlet pipeline. The plurality of first water outlet pipelines 203 may include a first water outlet pipeline, a second water outlet pipeline, a third water outlet pipeline, a first water outlet valve v31, a second water outlet valve v32, and a third water outlet valve v33. The first water outlet valve v31, the second water outlet valve v32, and the third water outlet valve v33 are respectively arranged on the first water outlet pipeline, the second water outlet pipeline, and the third water outlet pipeline. The plurality of first wastewater pipelines 205 include a first wastewater pipeline, a second wastewater pipeline, a first wastewater valve v41, and a second wastewater valve v42. The first wastewater valve v41 and the second wastewater valve v42 are respectively installed on the first wastewater pipeline and the second wastewater pipeline. A normally open wastewater valve v44 may be arranged at the wastewater discharge port 206.

[0089] The acidic water storage path 209 may include a first water storage pipe path and a first water storage valve v51, and the alkaline water storage path 210 may include a second water storage pipe path and a second water storage valve v52. The acidic water storage tank 207 and the alkaline water storage tank 208 may also be communicated with the waste water outlet through an overflow water path, and the overflow water path includes an overflow pipe path and an overflow valve v43 provided on the overflow pipe path.

[0090] Please refer to Figure 5 , Figure 5 FIG. Figure 5 is a schematic diagram of liquid flow for preparing mineral purified water provided by an embodiment of the present application. In an exemplary implementation manner, the mineral purified water can be prepared by a water purification system 200 in the following way: Open the water source valve v21, the first water inlet valve v22, the second water inlet valve v23, and the third water inlet valve v24, and open the first flow limiting valve v11 and the third flow limiting valve v13, and open the second water outlet valve v32, the first water storage valve v51, the second water storage valve v52, and the overflow valve v43. Tap water can enter the electrochemical water treatment module 100 through the first water inlet valve v22, the second water inlet valve v23, and the third water inlet valve v24. The first flow limiting valve v11 and the third flow limiting valve v13 can limit the water flow rate in the acid and alkali chambers, which can achieve a higher water recovery rate and reduce the waste water discharge. The acidic water generated during the process of preparing purified water enters the acidic water storage tank 207 through the first water storage valve v51. After the acidic water storage tank 207 is full, it can be discharged to the waste water outlet through the overflow valve v43. At the same time, the alkaline water enters the alkaline water storage tank 208 through the second water storage valve v52. After the alkaline water storage tank 208 is full, it is discharged to the waste water outlet through the overflow valve v43.

[0091] Please refer to Figure 6 , Figure 6 FIG. Figure 6 is a schematic structural diagram of another water purification system 200 provided by an embodiment of the present application. In an alternative implementation manner, the water purification system 200 may further include a reverse osmosis (abbreviation: RO) filter element 211, a second water inlet path 212, a purified water path 213, and a second waste water path 214.

[0092] The water inlet end of the second water inlet path 212 is communicated with the water source 201, and the water outlet end of the second water inlet path 212 is communicated with the water inlet of the reverse osmosis filter element 211. The reverse osmosis filter element 211 has a purified water outlet and a waste water outlet. The second water inlet path 212 is communicated with the water inlet of the reverse osmosis filter element 211. The reverse osmosis filter element 211 has a purified water outlet k41 and a waste water port k42.

[0093] The water inlet end of the purified water path 213 is connected to the purified water outlet of the reverse osmosis filter element 211, and the water outlet end of the purified water path 213 is connected to the water inlet of the purified water chamber w2 and the water inlet of the alkaline water chamber w3. The purified water outlet k41 of the reverse osmosis filter element 211 is connected to the water inlet of the purified water chamber w2 and the water inlet of the alkaline water chamber w3 respectively through the purified water path 213.

[0094] The water inlet end of the second waste water path 214 is connected to the waste water outlet k42 of the reverse osmosis filter element 211, and the water outlet end of the second waste water path 214 is connected to the water inlet of the acidic water chamber w1 and the water inlet of the alkaline water chamber w3. The waste water outlet k42 of the reverse osmosis filter element 211 is connected to the water inlet of the acidic water chamber w1 and the water inlet of the alkaline water chamber w3 respectively through the second waste water path 214.

[0095] In an exemplary embodiment, the second water inlet path 212 includes a fourth water inlet pipe and a fourth water inlet valve v25 provided on the fourth water inlet pipe. The purified water path 213 includes a purified water pipe, a first purified water valve v61 and a second purified water valve v62. The water outlet end of the purified water pipe can be connected to the second water inlet pipe and the third water inlet pipe. The first purified water valve v61 can be provided on the second water inlet pipe. The second purified water valve v62 can be provided on the branch pipe connecting the purified water pipe and the third water inlet pipe, or on the third water inlet pipe. The second waste water path 214 includes a third waste water pipe, a third waste water valve v64, a fourth waste water valve v65 and a fifth waste water valve v66. The water outlet end of the third waste water pipe can be connected to the first water inlet pipe and the third water inlet pipe. The third waste water valve v64 can be provided on the first water inlet pipe. The fourth purified water valve can be provided on the third water inlet pipe. The third waste water pipe can also be connected to the waste water discharge port 206 through the fifth waste water valve v66.

[0096] The water purification system can further include a filter element purified water valve v63. The purified water outlet k41 of the RO filter element can be connected to the water use outlet 204 through the filter element purified water valve v63.

[0097] It can be understood that since the partial pipe segments of some pipelines in the embodiments of the present application have the same orientation, in order to simplify the pipeline layout in the water purification system 200, the pipelines with the same orientation can be integrated into the same pipeline. Different pipelines can also be set for each different water path, and the embodiments of the present application do not limit this.

[0098] Before the tap water is input into the electrochemical water treatment module 100, the raw water can also be input into the reverse osmosis filter element 211 for preliminary treatment. That is to say, the tap water is prepared into RO pure water through the RO filter element, and then the RO pure water is secondarily purified into ultrapure water through the electrochemical water treatment module 100. In this process, the wastewater generated by the RO filter element can be used as the inlet water for the acidic water chamber w1 and the alkaline water chamber w3, realizing the secondary utilization of the RO wastewater and reducing the wastewater generated by the water purification system 200.

[0099] Alternatively, the RO pure water passes through the water purification chamber w2 and the alkaline water chamber w3 of the electrochemical water treatment module 100 and then jointly flows into the water faucet, and the RO wastewater enters the acidic water chamber w1 for waste discharge to generate alkaline drinking water.

[0100] Please refer to Figure 7 , Figure 7 is a schematic diagram of the liquid flow for preparing ultrapure water provided by an embodiment of the present application. In an exemplary embodiment, ultrapure water can be prepared through the water purification system 200 in the following manner: Open the water source valve v21, the fourth inlet valve v25, the third wastewater valve v64, the fourth wastewater valve v65, the first water purification valve v61, the second outlet valve v32, the first wastewater valve v41, and the second wastewater valve v42. The tap water enters the RO filter element through the fourth inlet valve v25, and the purified water after passing through the RO filter element enters the water purification chamber w2 in the electrochemical water treatment module 100 through the first water purification valve v61. The ultrapure water generated after secondary purification by the electrochemical water treatment module 100 flows from the second outlet valve v32 to the water faucet. The wastewater generated by the RO filter element enters the acidic water chamber w1 and the alkaline water chamber w3 of the electrochemical water treatment module 100 through the third wastewater valve v64 and the fourth wastewater valve v65 respectively, and then flows into the wastewater discharge port 206 through the first wastewater valve v41 and the second wastewater valve v42 for waste discharge.

[0101] Please refer to Figure 8 , Figure 8It is a schematic diagram of liquid flow for preparing drinking alkaline water provided by an embodiment of the present application. In an exemplary implementation, drinking alkaline water can be prepared through the water purification system 200 in the following manner: Open the water source valve v21, the fourth inlet valve v25, the third wastewater valve v64, the second water purification valve v62, the first water purification valve v61, the second outlet valve v32, the third outlet valve v33, and the second wastewater valve v42. Tap water enters the RO filter element through the fourth inlet valve v25. The purified water after passing through the RO filter element enters the purified water chamber w2 and the alkaline water chamber w3 in the electrochemical water treatment module 100 through the first water purification valve v61 and the second water purification valve v62 respectively. The drinking alkaline water generated after secondary treatment by the electrochemical water treatment module 100 flows through the second outlet valve v32 and the third outlet valve v33 and converges to the water faucet. The wastewater generated by the RO filter element enters the acidic water chamber w1 of the electrochemical water treatment module 100 through the third wastewater valve v64, and then is discharged into the wastewater discharge port 206 through the second wastewater valve v42 for waste discharge.

[0102] Please refer to Figure 6 , in an alternative implementation, the water purification system 200 may further include a backwash pump 215, a backwash inlet passage 216, and a backwash wastewater passage 217.

[0103] The inlet end of the backwash inlet passage 216 is communicated with the outlet of the acidic water storage tank 207 and the outlet of the alkaline water storage tank 208. The outlet end of the backwash inlet passage 216 is communicated with the inlet of the acidic water chamber w1, the inlet of the alkaline water chamber w3, and the inlet of the purified water chamber w2. The backwash pump 215 is installed on the backwash inlet passage 216; the inlet end of the backwash wastewater passage 217 is communicated with the outlet of the acidic water chamber w1, the outlet of the alkaline water chamber w3, and the outlet of the purified water chamber w2. The outlet end of the backwash wastewater passage 217 is communicated with the wastewater discharge port 206, the acidic water storage tank 207, and the alkaline water storage tank 208.

[0104] The backwashing water inlet path 216 includes a backwater inlet pipe path, an acidic water valve v53, an alkaline water valve v54, a valve v55 before the pump, and a check valve v56. The valve v55 before the pump and the backwashing pump 215 are installed on the backwater inlet pipe path. One end of the backwater inlet pipe path can be communicated with the acidic water storage tank 207 and the alkaline water storage tank 208 respectively through the acidic water valve v53 and the alkaline water valve v54, and the other end of the backwater inlet pipe path can be communicated with the water source 201 pipe path. The backwashing wastewater path 217 includes a first communication valve v57, a second communication valve v58, an activation pipe path, and an activation valve v59 provided on the activation pipe path. Both ends of the first communication valve v57 can be communicated with the water outlet of the acidic water chamber w1 and the water outlet of the purified water chamber w2 respectively. Both ends of the second communication valve v58 can be communicated with the water outlet of the alkaline water chamber w3 and the water outlet of the purified water chamber w2 respectively. The other end of the activation pipe path can be communicated with the wastewater discharge port 206.

[0105] In an exemplary embodiment, the water purification system 200 can be backwashed. Tap water is input into the electrochemical water treatment module 100, and the circuit of the electrochemical water treatment module 100 is reversely connected to activate the electrode plates. Subsequently, the water stored in the acidic water storage tank 207 or the alkaline water storage tank 208 is circulated through the pipeline by the water pump, and tap water is introduced for flushing after circulating for a certain time. The flushing water is discharged as waste through the wastewater discharge port 206.

[0106] Please refer to Figure 9 , Figure 9It is a schematic diagram of liquid flow for electrode sheet activation provided by an embodiment of the present application. In an exemplary implementation, electrode sheet activation of the water purification system 200 can be achieved in the following manner: Open the first inlet valve v22, the second inlet valve v23, the third inlet valve v24, the third wastewater valve v64, the fourth wastewater valve v65, the first water purification valve v61, the first flow limiting valve v11, the second flow limiting valve v12, the third flow limiting valve v13, the activation valve v59, the first wastewater valve v41, the second wastewater valve v42, and the water source valve v21. Among them, since the water consumption during activation is less, the first flow limiting valve v11, the second flow limiting valve v12, and the third flow limiting valve v13 can be opened to limit the amount of water entering the electrochemical water treatment module 100, thereby saving water consumption. Tap water enters the acidic water chamber w1, the purified water chamber w2, and the alkaline water chamber w3 in the electrochemical water treatment module 100 through the first inlet valve v22, the second inlet valve v23, and the third inlet valve v24 respectively. Under the action of the reverse-connected electrodes, the ions adsorbed on the electrode surfaces in the acidic water chamber w1 and the alkaline water chamber w3 will undergo ion desorption. The desorbed ions enter the purified water channel under the action of the electric field force, and then flow into the wastewater discharge port 206 through the activation valve v59, the first wastewater valve v41, and the second wastewater valve v42 for waste discharge. The ion desorption situation can be detected by a total dissolved solids (TDS) pen, or the ion desorption time can be set according to experience. After the ion desorption is completed, an acid pickling process can be carried out.

[0107] Please refer to Figure 10 , Figure 10 It is a schematic diagram of liquid flow for an acid pickling process provided by an embodiment of the present application. The acid pickling process of the water purification system 200 can be achieved in the following manner: Open the fourth inlet valve v25, the first inlet valve v22, the second inlet valve v23, the third inlet valve v24, the third wastewater valve v64, the fourth wastewater valve v65, the first water purification valve v61, the first communication valve v57, the second communication valve v58, the first water storage valve v51, the acidic water valve v53, the valve before the pump v55, and the backwash pump 215. Start the backwash pump 215 to enable the acidic solution in the acidic water storage tank 207 to pass through the electrochemical water treatment module 100 and the RO filter element to dissolve and clean the inorganic salt precipitates inside the electrochemical water treatment module 100 and the RO filter element.

[0108] After flushing for a certain period of time, close the above-mentioned valves, and open the water source valve v21, the fourth water inlet valve v25, the first water inlet valve v22, the second water inlet valve v23, the third water inlet valve v24, the third waste water valve v64, the fourth waste water valve v65, the first purified water valve v61, the activation valve v59, the first waste water valve v41, the second waste water valve v42, the first water storage valve v51, the acidic water valve v53 and the overflow valve v43. Close other valves and the water pump, and flush the water purification system 200 with tap water. After flushing for a certain period of time, the pickling process is completed, and the caustic washing process can be carried out.

[0109] Please refer to Figure 11 , Figure 11 FIG. is a schematic diagram of the liquid flow of a caustic washing process provided by an embodiment of the present application. To perform the caustic washing process on the water purification system 200, it can be achieved in the following manner: Open the valves of the fourth water inlet valve v25, the first water inlet valve v22, the second water inlet valve v23, the third water inlet valve v24, the third waste water valve v64, the fourth waste water valve v65, the first purified water valve v61, the first communication valve v57, the second communication valve v58, the second water storage valve v52, the alkaline water valve v54, the pre-pump valve v55 and the water pump. Start the water pump, and pass the alkaline solution in the alkaline water storage tank 208 through the electrochemical water treatment module 100 and the RO filter element to dissolve and clean the organic and bacterial pollutants inside the electrochemical water treatment module 100 and the RO filter element. Close the above-mentioned valves.

[0110] After washing for a certain period of time, open the water source valve v21, the fourth water inlet valve v25, the first water inlet valve v22, the second water inlet valve v23, the third water inlet valve v24, the third waste water valve v64, the fourth waste water valve v65, the first purified water valve v61, the activation valve v59, the first waste water valve v41, the second waste water valve v42, the second water storage valve v52, the alkaline water valve v54 and the overflow valve v43. Close other valves and the water pump, and start flushing with tap water. After flushing for a certain period of time, the caustic washing process is completed, and the entire cleaning process ends.

[0111] In an exemplary embodiment, tap water can enter the acidic chamber and the purified water chamber w2 in the electrochemical water treatment module 100 to generate bath acidic water, and the alkaline water generated during the process is stored in the alkaline water storage tank 208 for secondary use.

[0112] Please refer to Figure 12 , Figure 12It is a schematic diagram of liquid flow for preparing acidic bath water provided by an embodiment of the present application. The acidic bath water can be prepared through the water purification system 200 in the following manner: Open the water source valve v21, the first inlet valve v22, the second inlet valve v23, the third inlet valve v24, the third wastewater valve v64, the fourth wastewater valve v65, the first water purification valve v61, the first outlet valve v31, the second outlet valve v32, the second water storage valve v52, the alkaline water valve v54, the overflow valve v43, the second flow limiting valve v12, and the third flow limiting valve v13. Tap water enters the electrochemical water treatment module 100 through the first inlet valve v22, the second inlet valve v23, and the third inlet valve v24. After being purified and acidified in the water purification chamber w2 and the acidic water chamber w1, it reaches the water faucet through the first outlet valve v31 and the second outlet valve v32. Among them, the second flow limiting valve v12 and the third flow limiting valve v13 limit the flow rate of the water inside the water purification chamber w2 and the alkaline water chamber w3, which can achieve a higher water usage recovery rate and reduce the wastewater discharge. The alkaline water generated during the process of preparing acidic water enters the alkaline water storage tank 208 through the second water storage valve v52. After the alkaline water storage tank 208 is full, it is discharged into the wastewater discharge port 206 through the overflow valve v43 for waste discharge.

[0113] Exemplarily, the valves in the embodiments of the present application may include solenoid valves or pneumatic valves. Among them, the first flow limiting valve v11, the second flow limiting valve v12, the third flow limiting valve v13, the normally open wastewater valve v44, and the one-way valve v56 are normally open valves, and the other valves are normally closed valves.

[0114] It should be noted that in the drawings, the dimensions of the regions may be exaggerated for clarity of illustration. Moreover, it can be understood that when an element is referred to as being "between" two elements, it can be the only layer between the two elements, or there may be more than one intermediate element. Similar reference numerals indicate similar elements throughout.

[0115] In the present application, the terms "first", "second", "third", "fourth", and "fifth" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance. The term "plurality" refers to two or more, unless otherwise clearly defined.

[0116] The above are only optional embodiments of the present application and are not intended to limit the present application. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present application shall be included within the protection scope of the present application.

Claims

1. An electrochemistry water treatment module, characterized in that, Comprising: An anode electrode, a cathode electrode, two anion exchange membranes, and two cation exchange membranes; The anode electrode and the cathode electrode are arranged at intervals; The two anion exchange membranes are respectively located on both sides of the anode electrode, and two acidic water chambers are formed between the anode electrode and the two anion exchange membranes respectively; The two cation exchange membranes are respectively located on both sides of the cathode electrode, and two alkaline water chambers are formed between the cathode electrode and the two cation exchange membranes respectively; A purified water chamber is formed between the anion exchange membrane and the cation exchange membrane located between the anode electrode and the cathode electrode.

2. The electrochemical water treatment module according to claim 1, wherein, The electrochemical water treatment module further includes a plurality of water guide grids, and the plurality of water guide grids are respectively located between the anode electrode and the adjacent anion exchange membrane, between the adjacent anion exchange membrane and the cation exchange membrane, and between the cathode electrode and the adjacent cation exchange membrane.

3. The electrochemical water treatment module according to claim 1, characterized in that, The electrochemical water treatment module has a first water inlet, a first water outlet, a second water inlet, a second water outlet, a third water inlet, and a third water outlet; The first water inlet communicates with one end of the two acidic water chambers, and the first water outlet communicates with the other end of the two acidic water chambers; The second water inlet communicates with one end of the purified water chamber, and the second water outlet communicates with the other end of the purified water chamber; The third water inlet communicates with one end of the two alkaline water chambers, and the third water outlet communicates with the other end of the two alkaline water chambers.

4. The electrochemical water treatment module according to claim 1, wherein Both the cathode electrode and the anode electrode include a first adsorption coating, a conductive wire mesh, and a second adsorption coating that are stacked, and both the first adsorption coating and the second adsorption coating have reducibility.

5. The electrochemical water treatment module according to claim 4, wherein, Both the first adsorption coating and the second adsorption coating have a plurality of microporous structures, and the diameter range of the microporous structures is 2 nanometers to 10 nanometers.

6. The electrochemical water treatment module according to claim 5, wherein, The materials of the first adsorption coating and the second adsorption coating both include at least one of activated carbon powder, carbon nanotubes, and graphene.

7. A water purification system, characterized in that, Comprising: An electrochemical water treatment module, a water source, a plurality of first water inlet paths, a plurality of first water outlet paths, a water use outlet, a plurality of first wastewater paths, and a wastewater discharge port; The electrochemical water treatment module includes the electrochemical water treatment module according to any one of claims 1 to 6, and the electrochemical water treatment module has an acidic water chamber, an alkaline water chamber, and a purified water chamber; The water inlet ends of the plurality of first water inlet paths are all communicated with the water source, and the water outlet ends of the plurality of first water inlet paths are respectively communicated with the water inlet of the acidic water chamber, the water inlet of the alkaline water chamber, and the water inlet of the purified water chamber; The water inlet ends of the plurality of first water outlet paths are respectively communicated with the water outlet of the acidic water chamber, the water outlet of the alkaline water chamber, and the water outlet of the purified water chamber, and the water outlet ends of the plurality of first water outlet paths are all communicated with the water use outlet; The water inlet ends of the plurality of first wastewater paths are respectively communicated with the water outlet of the acidic water chamber and the water outlet of the alkaline water chamber, and the water outlet ends of the plurality of first wastewater paths are all communicated with the wastewater discharge port.

8. The water purification system according to claim 7, wherein The water purification system further includes a reverse osmosis filter element, a second water inlet path, a purified water path, and a second wastewater path; The water inlet end of the second water inlet path is communicated with the water source, the water outlet end of the second water inlet path is communicated with the water inlet of the reverse osmosis filter element, and the reverse osmosis filter element has a purified water outlet and a wastewater outlet; The water inlet end of the purified water path is communicated with the purified water outlet of the reverse osmosis filter element, and the water outlet end of the purified water path is communicated with the water inlet of the purified water chamber and the water inlet of the alkaline water chamber; The water inlet end of the second wastewater path is communicated with the wastewater outlet of the reverse osmosis filter element, and the water outlet end of the second wastewater path is communicated with the water inlet of the acidic water chamber and the water inlet of the alkaline water chamber.

9. The water purification system according to claim 7, characterized in that, The water purification system further includes an acidic water storage tank, an alkaline water storage tank, an acidic water storage path, an alkaline water storage path, a backwashing pump, a backwashing water inlet path, and a backwashing wastewater path; The water inlet end of the acidic water storage path is communicated with the water outlet of the acidic water chamber, and the water outlet end of the acidic water storage path is communicated with the water inlet of the acidic water storage tank; The water inlet end of the alkaline water storage path is communicated with the water outlet of the alkaline water chamber, and the water outlet end of the alkaline water storage path is communicated with the water inlet of the alkaline water storage tank; The water inlet end of the backwashing water inlet path is communicated with the water outlets of the acidic water storage tank and the alkaline water storage tank, the water outlet end of the backwashing water inlet path is communicated with the water inlets of the acidic water chamber, the alkaline water chamber, and the purified water chamber, and the backwashing pump is installed on the backwashing water inlet path; The water inlet end of the backwashing wastewater path is communicated with the water outlets of the acidic water chamber, the alkaline water chamber, and the purified water chamber, and the water outlet end of the backwashing wastewater path is communicated with the wastewater discharge port, the acidic water storage tank, and the alkaline water storage tank.

10. The water purification system according to claim 7, wherein The water purification system further includes a plurality of flow limiting valves; The plurality of flow limiting valves are respectively installed at the water inlets of the acidic water chamber, the alkaline water chamber, and the purified water chamber.

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