Water treatment equipment and circulating water system

Abstract

The present application discloses a water treatment device and a circulating water system, which belongs to the field of water treatment technology. The disclosed water treatment device includes a reaction box, an electrode assembly and a power supply module, the reaction box includes a processing space, a water inlet and a water outlet, and the water inlet and the water outlet are both connected to the processing space; the electrode assembly is arranged in the processing space, and the electrode assembly includes a first electrode part and a second electrode part arranged at intervals; the positive electrode of the power supply module is electrically connected to the first electrode part, and the negative electrode of the power supply module is electrically connected to the second electrode part; wherein the first electrode part and the second electrode part are both titanium-iron-silver alloy electrodes. The above scheme can solve the problems of poor electrode durability and low rust and scale removal efficiency in current water treatment equipment.

Description

Technical Field

[0001] The present application belongs to the field of water treatment technology, and specifically relates to a water treatment device and a circulating water system. Background Art

[0002] In industrial production activities, in order to reduce cost losses, it is usually necessary to use industrial circulating water. After long-term use, industrial circulating water will contain pollutants such as iron hydroxide, calcium carbonate and magnesium carbonate, which will form rust and scale in the circulating pipe network, seriously affecting the stability and economic benefits of the circulating water system and posing safety hazards.

[0003] At present, electrochemical technology, as a green and environmentally friendly water treatment technology, has also been applied to the rust and scale removal of industrial circulating water, especially the in-situ electrochemical repair technology with metal electrodes as the core. When existing water treatment equipment uses metal electrodes, it is usually necessary to modify and coat the surface of the metal electrode with precious metals such as ruthenium and iridium for corrosion protection. Not only is the cost high, but the preparation of the metal electrode anti-corrosion layer is usually achieved by chemical precipitation and other modification methods. There are common problems such as uneven coating and easy detachment of anti-corrosion materials, which shortens the service life of the metal electrode. At the same time, in the electrochemical process of the above-mentioned water treatment equipment, the mass transfer of pollutants in the sewage is mainly through the laminar flow caused by the concentration gradient of the pollutants and the temperature gradient of the sewage itself. The mass transfer rate is slow, which affects the efficiency of the electrochemical reaction, thereby making the rust and scale removal efficiency of the equipment low. Summary of the invention

[0004] The purpose of the embodiments of the present application is to provide a water treatment device that can solve the problems of poor electrode durability and low rust and scale removal efficiency in current water treatment equipment.

[0005] In order to solve the above technical problems, this application is implemented as follows:

[0006] On the one hand, an embodiment of the present application provides a water treatment device, which includes:

[0007] A reaction box, the reaction box comprising a processing space, a water inlet and a water outlet, the water inlet and the water outlet both being in communication with the processing space;

[0008] An electrode assembly, the electrode assembly is disposed in the processing space, and the electrode assembly includes a first electrode portion and a second electrode portion arranged at intervals;

[0009] A power supply module, wherein the positive electrode of the power supply module is electrically connected to the first electrode portion, and the negative electrode of the power supply module is electrically connected to the second electrode portion;

[0010] Wherein, the first electrode portion and the second electrode portion are both titanium-iron-silver alloy electrodes.

[0011] On the other hand, an embodiment of the present application provides a circulating water system, which includes a circulating pipe network and the aforementioned water treatment equipment, wherein the water treatment equipment is arranged on the circulating pipe network.

[0012] In the water treatment equipment disclosed in the embodiment of the present application, the first electrode portion is electrically connected to the positive electrode of the power supply module, and the second electrode portion is electrically connected to the negative electrode of the power supply module, thereby being able to generate an electrochemical catalytic oxidation-reduction reaction in the processing space of the reaction box and effectively remove pollutants such as COD in the wastewater.

[0013] At the same time, the first electrode part and the second electrode part are both titanium-iron-silver alloy electrodes, among which the titanium electrode component has better anti-corrosion performance, which can improve the overall anti-corrosion performance of the electrode; the iron electrode and the silver electrode are more active at the anode, which can significantly increase the electrochemical reaction rate, and the iron electrode can form a coagulant, and coagulate and aggregate and settle the COD in the wastewater, thereby realizing solid-liquid separation. The silver electrode can promote the production of hydroxyl radicals to remove rust, and can also decompose COD; when the electrochemical reaction rate is accelerated, the cathode area is more likely to form a strong alkaline environment, and the calcium and magnesium ions that form scale will be precipitated.

[0014] Compared with the prior art, the water treatment equipment disclosed in the embodiment of the present application undoubtedly has better durability and also has higher rust and scale removal efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 A schematic diagram of the structure of the water treatment equipment disclosed in the embodiment of the present application;

[0016] Figure 2 A schematic diagram of the structure of the first electrode portion (second electrode portion) disclosed in an embodiment of the present application;

[0017] Figure 3 A top view of the water treatment equipment disclosed in the embodiment of the present application;

[0018] Figure 4 It is a front view of the water treatment equipment disclosed in the embodiment of the present application;

[0019] Figure 5 A side view of the water treatment equipment disclosed in the embodiment of the present application;

[0020] Description of reference numerals:

[0021] 100-reaction box, 110-processing space, 120-water inlet, 130-water outlet, 140-installation part, 150-slag discharge port, 160-opening,

[0022] 200 - electrode assembly, 210 - first electrode portion, 220 - second electrode portion, 230 - extension ear portion, 231 - electrical connection hole,

[0023] 300 - power supply module, 400 - first circuit, 500 - second circuit. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0025] The terms "first", "second", etc. in the specification and claims of the present application are used to distinguish similar objects, and are not used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable under appropriate circumstances, so that the embodiments of the present application can be implemented in an order other than those illustrated or described here, and the objects distinguished by "first", "second", etc. are generally of one type, and the number of objects is not limited. For example, the first object can be one or more. In addition, "and / or" in the specification and claims represents at least one of the connected objects, and the character " / " generally indicates that the objects associated with each other are in an "or" relationship.

[0026] The technical solution disclosed in the embodiments of the present application is described in detail below in conjunction with the accompanying drawings.

[0027] Please refer to Figure 1 to Figure 5 The embodiment of the present application discloses a water treatment device, which can remove rust, scale and dirt from wastewater. The disclosed water treatment device includes a reaction box 100, an electrode assembly 200 and a power supply module 300.

[0028] Among them, the reaction box 100 is the main component of the water treatment equipment, which is the supporting and installing foundation of part of the structure of the water treatment equipment. The electrode assembly 200 is a functional component of the water treatment equipment, and the power supply module 300 is an enabling component of the water treatment equipment. The electrode assembly 200 and the power supply module 300 are used together to electrochemically treat the wastewater; there are many types of power supply modules 300, such as external power supplies, batteries, etc. In this embodiment, the power supply module 300 allows current to pass through the wastewater (equivalent to an electrochemical solution) through the electrode assembly 200, so that an oxidation reaction can be generated at the anode of the electrode assembly 200 and a reduction reaction can be generated at the cathode of the electrode assembly 200, thereby treating the COD of the wastewater.

[0029] Specifically, the reaction box 100 includes a processing space 110, a water inlet 120 and a water outlet 130, and the water inlet 120 and the water outlet 130 are both connected to the processing space 110. It should be understood that the processing space 110 refers to the area where the electrochemical reaction (electrochemical process) of the wastewater is realized, and the wastewater enters the processing space 110 from the water inlet 120 and is discharged from the water outlet 130 after being processed.

[0030] It should be noted that, since an electrochemical reaction needs to be carried out in the reaction box 100, the reaction box 100 is usually an insulating structural member, that is, it has an insulating effect. In this embodiment, there are many types of reaction boxes 100, for example, it can be a reaction box made of PVC (i.e. polyvinyl chloride) resin, concrete, etc.

[0031] In another specific embodiment, the reaction box 100 can be made of organic glass. In this case, the reaction box 100 not only has an insulating effect, but also has a transparent property. Therefore, the operator can clearly observe the situation in the treatment space 110 to judge the treatment status of the wastewater. Of course, in order to make the reaction box 100 transparent, other materials can also be used, such as PC (i.e., polycarbonate) resin.

[0032] The electrode assembly 200 is disposed in the processing space 110. As mentioned above, the electrode assembly 200 processes wastewater in the processing space 110. At the same time, the electrode assembly 200 includes a first electrode portion 210 and a second electrode portion 220 arranged at intervals, so that the first electrode portion 210 and the second electrode portion 220 are both located in the processing space 110, and the two are separated by a certain distance to avoid interference when the electrochemical reactions are performed separately.

[0033] In this embodiment, the positive electrode of the power supply module 300 is electrically connected to the first electrode unit 210, and the negative electrode of the power supply module 300 is electrically connected to the second electrode unit 220. It should be understood that, in this configuration, the first electrode unit 210 exists as an anode, and the second electrode unit 220 exists as a cathode, an oxidation reaction occurs in the first electrode unit 210, and a reduction reaction occurs in the second electrode unit 220.

[0034] The first electrode 210 and the second electrode 220 are both titanium-iron-silver alloy electrodes. It should be noted that since the titanium electrode has strong corrosion resistance, it can undoubtedly improve the durability of the first electrode 210 and the second electrode 220 as a part of the first electrode 210 and the second electrode 220.

[0035] At the same time, since the iron electrode is more active in the first electrode portion 210, it is easier to lose electrons and undergo oxidation reaction, and is gradually oxidized to Fe 3+ , and at the same time, the following reaction also occurs at the first electrode portion 210:

[0036] 2H2O-2e - →2OH + 2H +

[0037] It can be seen that water undergoes an oxidation reaction in the first electrode portion 210, and water molecules lose electrons and are oxidized to OH· (i.e., hydroxyl radicals). OH· has a strong oxidizing property and can oxidize and decompose organic pollutants and ammonia nitrogen pollutants in wastewater into carbon dioxide and nitrogen respectively. The reaction formula is as follows:

[0038] COD+OH·→CO2↑+H2O

[0039] 2NH3+6OH·→N2↑+6H2O+6e -

[0040] Similarly, the silver electrode is also relatively active in the first electrode portion 210 , and can accelerate the oxidation reaction of water near the first electrode portion 210 , promote the generation of OH·, and thus improve the treatment effect of COD and ammonia nitrogen pollutants in the wastewater.

[0041] Furthermore, since there is a large amount of OH· in the processing space 110, the rust in the wastewater (the main component is ferric hydroxide) can be oxidized by OH· into ferric oxide, and finally oxidized into ferroferric oxide and precipitated, thereby achieving solid-liquid separation from the wastewater. In this way, the water treatment equipment can remove rust impurities in the wastewater.

[0042] At the same time, water obtains electrons at the second electrode portion 220 and undergoes a reduction reaction, and the reaction formula is as follows:

[0043] 2H2O+2e - →H2+2OH -

[0044] The aforementioned Fe 3+ With OH - Ferric hydroxide is generated. Ferric hydroxide is a flocculant. Therefore, during its precipitation process, the COD in the water will be coagulated and agglomerated together to precipitate, thereby separating some pollutants from the wastewater, thereby further removing the COD in the wastewater.

[0045] Combined with the above, the iron electrode and the silver electrode promote the oxidation reaction in the first electrode portion 210, and in order to achieve a balance, the rate of the reduction reaction in the second electrode portion 220 is also accelerated, thereby generating a large amount of OH near the second electrode portion 220. - , making the second electrode portion 220 near a strong alkaline environment. Since the scale in the wastewater is mainly formed by calcium and magnesium ions, the calcium and magnesium ions in the wastewater will react with OH - The calcium hydroxide and magnesium hydroxide are combined to form scale on the second electrode portion 220 .

[0046] As shown in the above reaction process, the water treatment equipment disclosed in this embodiment removes and cleans rust, scale and pollutants in the wastewater.

[0047] In the aforementioned embodiment, sediments may accumulate in the processing space 110. In order to avoid crowding the processing space 110, in an optional solution, the reaction box 100 may further include a slag discharge port 150, which is connected to the processing space 110. Specifically, when the sediments in the processing space 110 accumulate to a certain amount, the slag discharge port 150 may be opened to discharge the sediments. The sediments may be discharged at a preset time interval, or the volume of the sediments may be obtained by observing and detecting the internal conditions of the processing space 110 and then discharged.

[0048] It should be noted that the titanium-iron-silver electrode used in the water treatment equipment of this embodiment combines the advantages of separate titanium electrodes, iron electrodes and silver electrodes. The titanium electrode makes the titanium-iron-silver electrode have better corrosion resistance as a whole, but the reaction activity of the titanium electrode is poor, while the reaction activities of the iron electrode and the silver electrode are better, so the titanium-iron-silver electrode also has better reaction activity as a whole. In this way, the titanium-iron-silver electrode has better performance in the main performance aspects of the electrode.

[0049] From the above description, it can be seen that in the water treatment equipment disclosed in the embodiment of the present application, the first electrode unit 210 is electrically connected to the positive electrode of the power supply module 300, and the second electrode unit 220 is electrically connected to the negative electrode of the power supply module 300, so that an electrochemical catalytic oxidation-reduction reaction can be generated in the processing space 110 of the reaction box 100, and pollutants such as COD in the wastewater can be effectively removed.

[0050] At the same time, the first electrode portion 210 and the second electrode portion 220 are both titanium-iron-silver alloy electrodes, among which the titanium electrode component has better anti-corrosion performance, which can improve the overall anti-corrosion performance of the electrode; the iron electrode and the silver electrode are more active at the anode, which can significantly increase the electrochemical reaction rate, and the iron electrode can form a coagulant, and coagulate and aggregate and settle the COD in the wastewater, thereby achieving solid-liquid separation, and the silver electrode can promote the production of hydroxyl radicals to remove rust, and can also decompose COD; when the electrochemical reaction rate is accelerated, the cathode area is more likely to form a strong alkaline environment, and the calcium and magnesium ions that form scale will be precipitated.

[0051] Compared with the prior art, the water treatment equipment disclosed in the embodiment of the present application undoubtedly has better durability and also has higher rust and scale removal efficiency.

[0052] In order to achieve the best treatment effect of the water treatment equipment, in an optional solution, the percentage of each component substance in the titanium-iron-silver alloy electrode can be: Ti: 62% to 81%; Fe: 16% to 32%; Ag: 3% to 8%.

[0053] Specifically, under such a ratio, the titanium element has a higher proportion, which can undoubtedly significantly improve the corrosion resistance of the entire electrode, and thus have better durability; the iron element and the silver element have a smaller proportion, but can still significantly optimize the electrochemical reaction rate of the water treatment equipment, and can achieve a flocculation effect by generating iron hydroxide, and form a strong alkaline environment near the second electrode part 220.

[0054] In a specific implementation, the percentage of each component in the titanium-iron-silver alloy electrode may be: Ti: 70%; Fe: 25%; Ag: 5%. Of course, this embodiment does not limit the specific proportion of each component in the titanium-iron-silver alloy electrode.

[0055] In order to strengthen the electrochemical reaction of the water treatment equipment and improve the treatment effect of wastewater, in an optional scheme, the electrode assembly 200 may include a plurality of first electrode parts 210 and a plurality of second electrode parts 220, and the plurality of first electrode parts 210 are electrically connected to the power supply module 300 through the first circuit 400, that is, the plurality of first electrode parts 210 are connected in parallel to each other and then electrically connected to the power supply module 300 through the first circuit 400; the plurality of second electrode parts 220 are electrically connected to the power supply module 300 through the second circuit 500, and the first electrode parts 210 and the second electrode parts 220 are arranged alternately in sequence, that is, the plurality of second electrode parts 220 are connected in parallel to each other and then electrically connected to the power supply module 300 through the second circuit 500.

[0056] In this case, the area of ​​the electrochemical reaction in the treatment space 110 is increased, the amount of wastewater treated by the water treatment equipment is increased, and its treatment capacity is enhanced, thereby improving the cleanliness of the wastewater after treatment. Of course, this embodiment does not limit the specific number of the first electrode unit 210 and the second electrode unit 220. Figure 1 to Figure 3 As shown, the number of the first electrode portion 210 and the number of the second electrode portion 220 can both be set to 5; the number of both can also be set to 4, 6 or 7, etc.

[0057] Generally, the first electrode portion 210 and the second electrode portion 220 can be arranged along the water flow direction in the reaction box 100. It should be understood that, under such a setting, the first electrode portion 210 and the second electrode portion 220 will be in the flow direction of the wastewater, and the wastewater will hit the first electrode portion 210 and the second electrode portion 220 based on the inertia of movement, so that the first electrode portion 210 and the second electrode portion 220 can contact the wastewater to the maximum extent, thereby avoiding the wastewater from being discharged from the reflection space 110 without being treated. Therefore, this embodiment can undoubtedly further optimize the treatment effect of the water treatment equipment.

[0058] In this embodiment, the first electrode portion 210 and the second electrode portion 220 may have various shapes, for example, the first electrode portion 210 and the second electrode portion 220 are both block structures or rod structures, etc. In another specific implementation, the first electrode portion 210 may be a first electrode plate, and the second electrode portion 220 may be a second electrode plate.

[0059] It should be understood that the first electrode plate and the second electrode plate, as plate-shaped structures, undoubtedly have a larger plane layout area, and can occupy more space in the processing space 110, thereby being able to extend to a larger range of wastewater in the processing space 110 and perform electrochemical treatment on the wastewater. It can be seen that this embodiment can undoubtedly enhance the processing capacity of the water treatment equipment.

[0060] Furthermore, the first electrode plate and the second electrode plate can be arranged in parallel. In this arrangement, the plurality of first electrode plates and the plurality of second electrode plates can be arranged at intervals, and adjacent electrode plates can be prevented from being too close due to deflection, so that the distribution of the electrode plates can be more uniform, and sufficient spacing can be formed between the electrode plates, and the spacing can accommodate more of the aforementioned precipitates, thereby preventing the precipitates from accumulating between the electrode plates and squeezing the electrode plates and causing damage.

[0061] In order to make the electrode assembly 200 more stably and reliably installed, in an optional solution, a mounting portion 140 may be provided in the reaction box 100, and the electrode assembly 200 is positioned and installed in the processing space 110 through the mounting portion 140. Specifically, the mounting portion 140 can limit the electrode assembly 200 to prevent the electrode assembly 200 from being dislocated, loosened, etc.; when the electrode assembly 200 is matched with the mounting portion 140, the installation in the processing space 110 is completed.

[0062] In this embodiment, there are various types of the mounting portion 140, for example, the mounting portion 140 may be a buckle portion, and the electrode assembly 200 may be buckled with the mounting portion 140. In another specific embodiment, the mounting portion 140 may be a slot, and the first electrode portion 210 and the second electrode portion 220 are both embedded in the mounting portion 140.

[0063] It should be understood that when the first electrode portion 210 and the second electrode portion 220 are located in the mounting portion 140, the portion surrounding the mounting portion 140 can be wrapped around the first electrode portion 210 and the second electrode portion 220, and the first electrode portion 210 and the second electrode portion 220 are limited and constrained; when the first electrode portion 210 and the second electrode portion 220 are deflected or misaligned, the first electrode portion 210 and the second electrode portion 220 will conflict with the portion surrounding the mounting portion 140, so that the first electrode portion 210 and the second electrode portion 220 are confined in the mounting portion 140 and the preset mounting state is maintained unchanged.

[0064] The present embodiment does not limit the specific location of the water inlet 120 and the water outlet 130 in the reaction box 100, and there may be many locations, for example, the water inlet 120 and the water outlet 130 are arranged on adjacent end surfaces of the reaction box 100. In another specific embodiment, the reaction box 100 may have a first end surface and a second end surface that are opposite to each other, the water inlet 120 is arranged on the first end surface, and the water outlet 130 is arranged on the second end surface.

[0065] It should be understood that since the first end face and the second end face are opposite to each other, the wastewater entering the treatment space 110 from the water inlet 120 can move in a straight line to the water outlet 130, and the wastewater propagates in a straight line at a significantly faster rate than the bending movement. Therefore, this embodiment can ensure that the water treatment equipment is at a higher treatment efficiency. At the same time, such a setting is also more conducive to a larger contact area between the wastewater and the electrode assembly 200, thereby increasing the wastewater treatment capacity.

[0066] This embodiment does not limit the arrangement relationship between the water inlet 120 and the water outlet 130, and there may be various arrangements, for example, in the height direction of the reaction box 100, the water inlet 120 is arranged below the water outlet 130. In another specific embodiment, in the height direction of the reaction box 100, the water inlet 120 may be arranged below the water outlet 130.

[0067] It should be understood that, under such a configuration, wastewater enters the reaction box 100 from the bottom and exits from the top, i.e., a countercurrent flow mode, and this embodiment is conducive to the mass transfer of wastewater. Specifically, the wastewater moves from the bottom to the top, which can effectively prevent the pollutants from being deposited downward, and can drive the pollutants to move upward and contact the electrode assembly 200 to perform an electrochemical reaction.

[0068] In this embodiment, the reaction box 100 may have a variety of configurations, for example, the reaction box 100 is a closed shell. In another specific embodiment, the reaction box 100 may have an opening 160, the opening 160 is connected to the processing space 110, the first electrode part 210 and the second electrode part 220 are both provided with an extension ear part 230, the extension ear part 230 extends out of the reaction box 100 through the opening 160, and the first electrode part 210 is electrically connected to the power supply module 300 through the extension ear part 230, and the second electrode part 220 is electrically connected to the power supply module 300 through the extension ear part 230.

[0069] With such a configuration, the extension ear portion 230 extends out of the reaction box 100, so that the electrical connection between the first electrode portion 210 and the second electrode portion 220 and the power supply module 300 can be easily achieved, and it is easier to operate outside the reaction box 100; at the same time, based on the opening 160, the operator can also easily observe the processing situation inside the processing space 110, so as to implement countermeasures.

[0070] In order to ensure the connection stability between the electrode assembly 200 and the power supply module 300, electrical connection holes 231 may be provided on the first electrode portion 210 and the second electrode portion 220, and corresponding conductive cables may be embedded in the electrical connection holes 231 to achieve reliable electrical connection.

[0071] It should be noted that this embodiment does not limit the specific size of each structure in the water treatment equipment, which can be set according to actual treatment requirements.

[0072] The water treatment equipment disclosed in this embodiment has excellent wastewater treatment effect. In some specific application examples:

[0073] (1) The water treatment equipment of this embodiment is used to treat circulating cooling water. The iron hydroxide concentration in the wastewater is 20-30 mg / L, and the total concentration of calcium and magnesium ions is 800-1200 mg / L. After 30 minutes of electrolysis, the iron hydroxide concentration in the wastewater drops to <1.0 mg / L, and the total concentration of calcium and magnesium ions is less than 20 mg / L, and the treatment effect is good.

[0074] (2) The water treatment equipment of this embodiment is used to treat coalbed methane produced water. The iron hydroxide concentration in the wastewater is 10-20 mg / L, and the total concentration of calcium and magnesium ions is 1000-2000 mg / L. After 60 minutes of electrolysis, the iron hydroxide concentration drops to <1.0 mg / L, and the total concentration of calcium and magnesium ions is less than 300 mg / L, and the treatment effect is good.

[0075] (3) The water treatment equipment of this embodiment is used to treat shale gas production and drainage. The iron hydroxide concentration in the wastewater is 10-20 mg / L, and the total concentration of calcium and magnesium ions is 1000-2000 mg / L. After 60 minutes of electrolysis, the iron hydroxide concentration in the wastewater drops to <1.0 mg / L, and the total concentration of calcium and magnesium ions is less than 300 mg / L, and the treatment effect is good.

[0076] In order to prepare a titanium-iron-silver alloy electrode with good quality, the present application embodiment also discloses a method for preparing the titanium-iron-silver alloy electrode. The disclosed method for preparing the titanium-iron-silver alloy electrode comprises the following steps:

[0077] Provide titanium raw materials, iron raw materials and silver raw materials. Specifically, 99.6% pure titanium sponge, 99.9% pure iron and 99.6% pure silver can be selected as raw materials, which are easy to purchase and convenient; the above three raw materials are proportioned so that the percentage of the three elements of titanium, iron and silver is: Ti: 62% to 81%; Fe: 16% to 32%; Ag: 3% to 8%, specifically, Ti: 70%; Fe: 25%; Ag: 5%. Of course, this embodiment does not limit the specific types of the three raw materials in the titanium-iron-silver alloy electrode.

[0078] The three raw materials with the above proportions are melted in a first melting device, and the three raw materials are melted into ingots. The first melting device can be a non-consumable vacuum arc furnace, and this embodiment does not limit its specific type. Optionally, a protective gas is added to the first melting device at the time of melting to prevent the three raw materials from being oxidized during the melting process; there are many types of protective gases, which can usually be nitrogen, or other protective gases such as argon.

[0079] Furthermore, in this step, the ingot can be turned over to adjust the upper and lower surfaces, and then smelted again. The smelting and turning operations can be repeated multiple times (such as 5 or 6 times) to ensure that the distribution of the elements in the ingot is more uniform, which can improve the quality of the titanium-iron-silver alloy electrode and achieve a better decontamination effect in the water treatment equipment.

[0080] After the ingot casting is completed, the ingot is melted into alloy liquid in a second melting device. The second melting device can be a combination of a crucible and an electric melting furnace. Of course, this embodiment does not limit the specific type of the second melting device.

[0081] Finally, the alloy liquid is formed into a titanium-iron-silver alloy electrode of a preset size through a preset mold. In combination with the above, the preset mold can be a plate-shaped mold; and the preset size of the titanium-iron-silver alloy electrode can be determined according to actual working conditions.

[0082] Based on the aforementioned water treatment equipment, the embodiment of the present application also discloses a circulating water system, which includes a circulating pipe network and the aforementioned water treatment equipment, and the water treatment equipment is arranged on the circulating pipe network. Based on the removal and cleaning of rust, scale and pollutants by the water treatment equipment, it can not only treat the pollutants in the circulating water, but also reduce the rust and scale in the circulating pipe network, thereby preventing the rust and scale from adhering to the pipe wall. Therefore, the problems such as reduced heat dissipation effect, high pressure alarm of the unit and even unit shutdown caused by iron filings and scale in the prior art can be effectively alleviated.

[0083] The embodiments of the present application are described above in conjunction with the accompanying drawings, but the present application is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Under the guidance of the present application, ordinary technicians in this field can also make many forms without departing from the purpose of the present application and the scope of protection of the claims, all of which are within the protection of the present application.

Claims

1. A water treatment device, characterized in that: include: A reaction box (100), the reaction box (100) comprising a processing space (110), a water inlet (120) and a water outlet (130), the water inlet (120) and the water outlet (130) both being in communication with the processing space (110); An electrode assembly (200), the electrode assembly (200) being arranged in the processing space (110), and the electrode assembly (200) comprising a first electrode portion (210) and a second electrode portion (220) arranged at intervals; A power supply module (300), wherein a positive electrode of the power supply module (300) is electrically connected to the first electrode portion (210), and a negative electrode of the power supply module (300) is electrically connected to the second electrode portion (220); Wherein, the first electrode portion (210) and the second electrode portion (220) are both titanium-iron-silver alloy electrodes; In the height direction of the reaction box (100), the water inlet (120) is arranged below the water outlet (130); The reaction box (100) further comprises a slag discharge port (150), wherein the slag discharge port (150) is in communication with the processing space (110).

2. The water treatment equipment according to claim 1, characterized in that: The percentage of each component in the titanium-iron-silver alloy electrode: Ti: 62%~81%; Fe: 16%~32%; Ag: 3%~8%.

3. The water treatment equipment according to claim 1, characterized in that: The electrode assembly (200) comprises a plurality of first electrode parts (210) and a plurality of second electrode parts (220); the plurality of first electrode parts (210) are electrically connected to the power supply module (300) via a first circuit (400); the plurality of second electrode parts (220) are electrically connected to the power supply module (300) via a second circuit (500); and the first electrode parts (210) and the second electrode parts (220) are arranged alternately in sequence.

4. The water treatment equipment according to claim 1 or 3, characterized in that: The first electrode portion (210) and the second electrode portion (220) are arranged along the direction of water flow in the reaction box (100).

5. The water treatment equipment according to claim 3, characterized in that: The first electrode portion (210) is a first electrode plate, and the second electrode portion (220) is a second electrode plate.

6. The water treatment equipment according to claim 1 or 5, characterized in that: A mounting portion (140) is provided in the reaction box (100), and the electrode assembly (200) is positioned and mounted in the processing space (110) via the mounting portion (140).

7. The water treatment equipment according to claim 6, characterized in that: The mounting portion (140) is a slot, and the first electrode portion (210) and the second electrode portion (220) are both embedded in the mounting portion (140).

8. The water treatment equipment according to claim 1, characterized in that: The reaction box (100) has a first end surface and a second end surface which are separated from each other, the water inlet (120) is arranged on the first end surface, and the water outlet (130) is arranged on the second end surface.

9. A circulating water system, characterized in that: It comprises a circulating pipe network and the water treatment equipment according to any one of claims 1 to 8, wherein the water treatment equipment is arranged on the circulating pipe network.

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