Sewage treatment equipment

Abstract

The invention discloses sewage treatment equipment, including a box body, the box body has a storage space; at least one cathode plate; at least one anode plate, the anode plate and the cathode plate are alternately arranged in the storage space along the length extension direction of the box body; at least one semi-permeable membrane, at least one semi-permeable membrane is provided between adjacent anode plates and cathode plates, the two sides of the semi-permeable membrane are respectively the anode area and the cathode area, the anode plate is located in the anode area, and the cathode plate is located in the cathode area; each cathode area has at least one cathode water inlet and at least one cathode water outlet, each anode area has at least one anode water inlet and at least one anode water outlet, and the cathode water inlet and the cathode water outlet are respectively located on the opposite sides of the cathode area, and the anode water inlet and the anode water outlet are respectively located on the opposite sides of the anode area. The anode water inlet and the anode water outlet of the anode area are respectively located on the opposite sides of the anode area, the cathode area and the anode area are independent of each other, the structure is simple, and the purification efficiency is high.

Description

Technical Field

[0001] The invention relates to the field of sewage treatment, and in particular to sewage treatment equipment. Background Art

[0002] In recent years, with the continuous acceleration of my country's industrialization process, the amount of sewage discharged has also increased year by year, especially sewage containing chloride, calcium and magnesium ions. Water is an important resource for human survival and development. If sewage cannot be effectively treated, it will seriously affect human survival and development.

[0003] At present, electrochemical devices are usually used to electrochemically treat wastewater containing chloride, calcium and magnesium ions. It should be pointed out that the connection structure of the existing electrochemical treatment device is complex, difficult to install, and very inconvenient to use; in addition, the scale cleaning process of the existing electrochemical treatment device is relatively cumbersome, and usually needs to be cleaned manually; the scraper of the existing scale cleaning equipment is placed in water, which makes it easy for the scraper and the cathode plate to stick together due to scale and cannot be scraped smoothly, and the failure rate is high.

[0004] In summary, the existing sewage treatment equipment needs to be improved. Summary of the invention

[0005] In view of the above technical problems, the object of the present invention is to provide a sewage treatment equipment, in which a semipermeable membrane is installed in the accommodating space of the sewage treatment equipment to separate the cathode plate and the anode plate, the cathode plate is located in the cathode area, the anode plate is located in the anode area, the cathode water inlet and the cathode water outlet of the cathode area are respectively located on the opposite sides of the cathode area, the anode water inlet and the anode water outlet of the anode area are respectively located on the opposite sides of the anode area, the cathode area and the anode area are independent of each other, the structure is simple, and the purification efficiency is high.

[0006] In order to achieve the above object, the object of the present invention is to provide a sewage treatment device, comprising:

[0007] A box body, wherein the box body has a containing space;

[0008] at least one cathode plate;

[0009] At least one anode plate, wherein the anode plate and the cathode plate are alternately arranged in the accommodation space along the length extension direction of the box body;

[0010] At least one semi-permeable membrane, wherein at least one semi-permeable membrane is provided between the adjacent anode plate and the cathode plate, and the two sides of the semi-permeable membrane are the anode region and the cathode region respectively, the anode plate is located in the anode region, and the cathode plate is located in the cathode region;

[0011] Each of the cathode regions has at least one cathode water inlet and at least one cathode water outlet, each of the anode regions has at least one anode water inlet and at least one anode water outlet, and the cathode water inlet and the cathode water outlet are respectively located on opposite sides of the cathode region, and the anode water inlet and the anode water outlet are respectively located on opposite sides of the anode region.

[0012] Preferably, the height of the cathode water inlet of the cathode zone is higher than the height of the corresponding cathode water outlet, and the height of the anode water inlet of the anode zone is higher than the height of the corresponding anode water outlet.

[0013] Preferably, the height of the cathode water inlet of the cathode zone is lower than the height of the corresponding cathode water outlet, and the height of the anode water inlet of the anode zone is lower than the height of the corresponding anode water outlet.

[0014] Preferably, the box body comprises a front side wall, a rear side wall, a left side wall, a right side wall and a bottom wall, the front side wall, the rear side wall, the left side wall, the right side wall and the bottom wall surround and form the accommodation space, and the accommodation space has a top opening;

[0015] The cathode water inlet of the cathode area is located on the right side wall, and the cathode water outlet is located on the left side wall or the bottom wall;

[0016] The anode water inlet of the anode area is located on the right side wall, and the anode water outlet is located on the left side wall or the bottom wall.

[0017] Preferably, the box body comprises a front side wall, a rear side wall, a left side wall, a right side wall and a bottom wall, the front side wall, the rear side wall, the left side wall, the right side wall and the bottom wall surround and form the accommodation space, and the accommodation space has a top opening;

[0018] The cathode water inlet of the cathode zone is located on the left side wall or the bottom wall, and the cathode water outlet is located on the right side wall;

[0019] The anode water inlet of the anode area is located on the left side wall or the bottom wall, and the anode water outlet is located on the right side wall.

[0020] Preferably, the sewage treatment equipment further comprises a water inlet pipe, and the water inlet pipe is respectively connected to at least one cathode water inlet and at least one anode water inlet.

[0021] Preferably, the sewage treatment equipment further comprises an outlet pipe, the outlet pipe comprises a cathode area outlet pipe and an anode area outlet pipe, the anode area outlet pipe is connected to at least one anode outlet, and the cathode area outlet pipe is connected to at least one cathode outlet.

[0022] Preferably, the sewage treatment equipment also includes a scraper assembly, which includes a first scraper and a second scraper, wherein the first scraper and the second scraper are respectively installed at the top opening of the box body, and there is a scraping space between the first scraper and the second scraper, the width of the scraping space is adapted to the thickness of the cathode plate, the position of the scraping space corresponds to the position of the cathode plate, and the cathode plate can be pulled up and down between the first scraper and the second scraper to scrape the adsorbed substances on both sides of the cathode plate.

[0023] Preferably, the sewage treatment equipment also includes a lifting assembly, which includes a connecting rod and two lifting cylinders. The connecting rod is located at the top opening of the box body, and the length extension direction of the connecting rod is consistent with the length extension direction of the box body. The top of the cathode plate is connected to the connecting rod, and the two lifting cylinders are respectively connected to the two ends of the connecting rod. The lifting of the connecting rod can be controlled by the lifting cylinder to control the lifting of the cathode plate to scrape the adsorbed matter on the cathode plate.

[0024] Preferably, the cathode plate includes a cathode plate body, a mounting piece installed in the middle of the top of the cathode plate body, and sliding limiters installed on the cathode plate body and located on both sides of the mounting piece; one end of the mounting piece away from the cathode plate body is connected to the connecting rod; two sliding grooves are provided at preset positions at both ends of the first scraper, and the two sliding limiters can be slidably installed in the two sliding grooves.

[0025] Preferably, the bottom of the box body has at least one sewage outlet, and each cathode area is connected to at least one sewage outlet.

[0026] Preferably, the sewage treatment equipment further comprises a sewage pipe, wherein the sewage pipe is respectively connected to at least one of the sewage outlets, and the sewage pipe is arranged obliquely and has a high end and a low end, and the outlet of the sewage pipe is formed at the low end.

[0027] Preferably, the semipermeable membrane and the cathode plate are stacked, and the semipermeable membrane is arranged on one side of the cathode plate.

[0028] Compared with the prior art, the sewage treatment equipment provided by the present invention has at least one of the following beneficial effects:

[0029] 1. The sewage treatment equipment provided by the present invention has a semipermeable membrane installed in the accommodating space of the sewage treatment equipment to separate the cathode plate and the anode plate, the cathode plate is located in the cathode area, the anode plate is located in the anode area, the cathode water inlet and the cathode water outlet of the cathode area are respectively located on the opposite sides of the cathode area, the anode water inlet and the anode water outlet of the anode area are respectively located on the opposite sides of the anode area, the cathode area and the anode area are independent of each other, the structure is simple, and the purification efficiency is high.

[0030] 2. The sewage treatment equipment provided by the present invention has a cathode plate located in the scraping gap between two adjacent scrapers of the scraper assembly. The dirt on both sides of the cathode plate can be scraped off by moving the cathode plate up and down, and the scraping efficiency is high and the scraping is convenient. The cathode plate has a sliding limiter that is compatible with the sliding groove on the scraper, and can be compatible with the sliding groove on the scraper to limit the movement trajectory of the cathode plate.

[0031] 3. The sewage treatment equipment provided by the present invention has a water inlet pipe connected to the cathode water inlet and the anode water inlet respectively, and the liquid to be purified can be injected into the cathode area and the anode area respectively through the one water inlet pipe, so that the liquid can enter conveniently; the water outlet pipe of the sewage treatment equipment includes a cathode area water outlet pipe and an anode area water outlet pipe, and the liquids in the cathode area and the anode area enter different pipes respectively and leave. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] The preferred implementation modes will be described below in a clear and understandable manner with reference to the accompanying drawings to further illustrate the above-mentioned characteristics, technical features, advantages and implementation methods of the present invention.

[0033] Figure 1 is a three-dimensional diagram of a sewage treatment device according to a preferred embodiment of the present invention;

[0034] Figure 2 yes Figure 1 The cross-sectional view of the plane where AA and DD are located;

[0035] Figure 3 yes Figure 1 Sectional view of the CC section;

[0036] Figure 4 yes Figure 1 Cross-sectional view of the FF section;

[0037] Figure 5 yes Figure 1 Sectional view of the middle BB section;

[0038] Figure 6 yes Figure 1 Cross-sectional view of section EE;

[0039] Figure 7yes Figure 2 Enlarged view of G in the middle;

[0040] Figure 8 is a cross-sectional view of a sewage treatment device according to a modified embodiment of the present invention;

[0041] Fig. 9 It is a three-dimensional diagram of a sewage treatment device according to a modified embodiment of the present invention.

[0042] Description of Figure Numbers:

[0043] Box body 1, accommodating space 10, cathode area 11, cathode water inlet 110, cathode water outlet 111, anode area 12, anode water inlet 120, anode water outlet 121, front side wall 131, rear side wall 132, left side wall 133, right side wall 134, bottom wall 135, cathode plate 2, cathode plate body 21, mounting part 22, sliding limiter 23, anode plate 3, semipermeable membrane 4, water inlet pipe 5, water outlet pipe 6, cathode area water outlet pipe 61, anode area water outlet pipe 62, scraper assembly 7, first scraper 71, sliding groove 710, second scraper 72, scraping space 70, lifting assembly 8, connecting rod 81, lifting cylinder 82, sewage outlet 91, sewage pipe 92. DETAILED DESCRIPTION

[0044] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the specific implementation methods of the present invention will be described below with reference to the accompanying drawings. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings and other implementation methods can be obtained based on these drawings without creative work.

[0045] In order to simplify the drawings, only the parts related to the invention are schematically shown in each figure, and they do not represent the actual structure of the product. In addition, in order to simplify the drawings and facilitate understanding, in some figures, only one of the parts with the same structure or function is schematically drawn or marked. In this article, "one" not only means "only one", but also means "more than one".

[0046] It should be further understood that the term “and / or” used in the specification and appended claims refers to any combination and all possible combinations of one or more of the associated listed items, and includes these combinations.

[0047] In this document, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0048] In addition, in the description of the present application, the terms "first", "second", etc. are only used to distinguish the description and cannot be understood as indicating or implying relative importance.

[0049] Example 1

[0050] Reference Manual Attached Figures 1 to 8 The first preferred embodiment of the sewage treatment equipment provided by the present invention is described. The sewage treatment equipment provided by the present invention uses a semi-permeable membrane to separate the anode plate and the cathode plate, has a simple structure and high purification efficiency.

[0051] Reference Manual Attached Figure 1 , Figure 2 as well as Figure 3 Specifically, the sewage treatment equipment includes a housing 1, at least one cathode plate 2, at least one anode plate 3 and at least one semi-permeable membrane 4. The housing 1 has a containing space 10; the anode plate 3 and the cathode plate 2 are alternately arranged in the containing space 10 along the length extension direction of the housing 1; there is at least one semi-permeable membrane 4 between the adjacent anode plates 3 and the cathode plates 2, and the two sides of the semi-permeable membrane 4 are respectively a cathode region 11 and an anode region 12, the anode plate 3 is located in the anode region 12, and the cathode plate 2 is located in the cathode region 11; each cathode region 11 has at least one cathode water inlet 110 and at least one cathode water outlet 111, each anode region 12 has at least one anode water inlet 120 and at least one anode water outlet 121, and the cathode water inlet 110 and the cathode water outlet 111 are respectively located on opposite sides of the cathode region 11, and the anode water inlet 120 and the anode water outlet 121 are respectively located on opposite sides of the anode region 12.

[0052] It should be noted that, in this preferred embodiment, the semipermeable membrane 4 includes a ruthenium titanium iridium coating, and the ruthenium titanium iridium coating includes ruthenium dioxide, titanium dioxide and iridium metal. The semipermeable membrane 4 between the cathode plate 2 and the anode plate 3 only allows certain ions and small molecules to pass freely, has a significant effect of enriching chloride ions, and can significantly improve the chlorine removal efficiency.

[0053] In this preferred embodiment, the semipermeable membrane 4 separates the containing space 10 into at least one cathode area 11 and at least one anode area 12, and the cathode area 11 and the anode area 12 have separate water inlets and outlets, respectively, and the cathode water inlet 110 and the cathode water outlet 111 of the cathode area 11 are respectively located on opposite sides of the cathode area 11, and the anode water inlet 120 and the anode water outlet 121 of the anode area 12 are respectively located on opposite sides of the anode area 12, which can increase the flow path of the water flow, increase the time that the water flow stays in the cathode area 11 and the anode area 12, and further improve the efficiency of sewage purification.

[0054] Further, the height of the cathode water inlet 110 of the cathode area 11 is higher than the height of the corresponding cathode water outlet 111, and the height of the anode water inlet 120 of the anode area 12 is higher than the height of the corresponding anode water outlet 121. That is to say, in this preferred embodiment, the cathode water inlet 110 and the cathode water outlet 111 are not at the same height, so as to further increase the path for liquid flow between the cathode water inlet 111 and the cathode water outlet 111. The anode water inlet 120 and the anode water outlet 121 are not at the same height, so as to further increase the path for liquid flow between the anode water inlet 120 and the anode water outlet 121.

[0055] Reference Manual Attached Fig. 9 , optionally, in some other preferred embodiments of the present invention, the height of the cathode water inlet 110 of the cathode area 11 is lower than the height of the corresponding cathode water outlet 111, and the height of the anode water inlet 120 of the anode area 12 is lower than the height of the corresponding anode water outlet 121. In this variant embodiment, the height of the cathode water inlet 110 is lower than the height of the cathode water outlet 111, and the liquid needs to overcome its own gravity and reach a certain height before it can leave the cathode water outlet 111, which can further increase the time the liquid stays between the cathode water inlet 110 and the cathode water outlet 111. Similarly, the height of the anode water inlet 120 is lower than the height of the anode water outlet 121, which can further increase the time the liquid stays between the anode water inlet 120 and the anode water outlet 111, further improving the purification efficiency.

[0056] Reference Manual Attached Figure 1 , Figure 2 , Figure 5 as well as Figure 6The box body 1 includes a front side wall 131, a rear side wall 132, a left side wall 133, a right side wall 134 and a bottom wall 135, wherein the front side wall 131, the rear side wall 132, the left side wall 133, the right side wall 134 and the bottom wall 135 surround and form the accommodation space 10, and the accommodation space 10 has a top opening; the cathode water inlet 110 of the cathode area 11 is located on the right side wall 134, and the cathode water outlet 111 is located on the left side wall 133 or the bottom wall 135; the anode water inlet 120 of the anode area 12 is located on the right side wall 134, and the anode water outlet 121 is located on the left side wall 133 or the bottom wall 135. In other words, the water flow adopts the water flow mode of "upper side in and lower side out" or "upper side in and lower side out".

[0057] Reference Manual Attached Figure 8 In some other preferred embodiments of the present invention, the cathode water inlet 110 of the cathode area 11 is located on the left side wall 133 or the bottom wall 135 (not shown in the figure), and the cathode water outlet 111 is located on the right side wall 134; the anode water inlet 120 of the anode area 12 is located on the left side wall 133 (not shown in the figure) or the bottom wall 135 (not shown in the figure), and the anode water outlet 121 is located on the right side wall 134. In other words, the water flow adopts the mode of "in from the bottom and out from the top", or "in from the bottom and out from the top".

[0058] Reference Manual Attached Figure 1 , Figure 5 as well as Figure 6 , further, the sewage treatment equipment also includes a water inlet pipe 5, and the water inlet pipe 5 is connected to at least one of the cathode water inlet 110 and at least one of the anode water inlet 120. Preferably, the side wall of the water inlet pipe 5 has openings corresponding to the number and position of the cathode water inlet 110 and the anode water inlet 120, and the water inlet pipe 5 is connected to the cathode water inlet 110 and all the anode water inlets 120 of the sewage treatment equipment. During use, the external liquid is suitable for entering the cathode area 11 and the anode area 12 from the water inlet pipe 5 through the cathode water inlet 110 and the anode water inlet 120 in sequence.

[0059] Optionally, in some other preferred embodiments of the present invention, the water inlet pipe 5 can also be directly installed on the top opening of the box body 1, and the liquid in the water inlet pipe 5 enters the cathode area 11 and the anode area 12 respectively through the top opening of the box body 1. In other words, a water flow mode of "in from top and out from bottom" or "in from top and out from bottom" is realized.

[0060] Reference Manual Attached Figure 1 , Figure 5 as well as Figure 6 The sewage treatment equipment also includes an outlet pipe 6, and the outlet pipe 6 includes a cathode area outlet pipe 61 and an anode area outlet pipe 62. The anode area outlet pipe 62 is connected to at least one of the anode outlets 121, and the cathode area outlet pipe 61 is connected to at least one of the cathode outlets 111.

[0061] In this preferred embodiment, the liquid in the cathode region 11 leaves through the cathode region water outlet pipe 61, and the liquid in the anode region 12 leaves through the anode region water outlet pipe 62, and the discharged liquids are separated.

[0062] During operation, the flow process of the liquid is as follows: the liquid first enters the water inlet pipe 5; the liquid in the water inlet pipe 5 enters the cathode area 11 through the cathode water inlet 110, and enters the anode area 12 through the anode water inlet 120; the purified liquid in the cathode area 11 enters the cathode area water outlet pipe 61 through the cathode water outlet 111 and leaves, and the purified liquid in the anode area 12 enters the anode area water outlet pipe 62 through the anode water outlet 121 and leaves.

[0063] It should also be pointed out that a plurality of cathode plates 2 and anode plates 3 can be installed in the accommodation space 10 of the box body 1. In the preferred embodiment, only three cathode plates 2 and two anode plates 3 are installed in the accommodation space 10 as an example for description, and the specific number of the cathode plates 2 and the anode plates 3 in the accommodation space 10 of the box body 1 should not constitute a limitation to the present invention.

[0064] During use, the cathode plate 2 and the anode plate 3 are energized at the same time, a strong electric field is formed between the cathode plate 2 and the anode plate 3, anions and cations in the sewage begin to migrate, wherein chloride ions gather toward the direction of the anode plate 3 and precipitate on the anode plate 3 to generate chlorine gas, and the precipitated chlorine gas dissolves in water; carbonate ions in the sewage move toward the direction of the cathode plate 2 and undergo a reduction reaction around the cathode plate 2, thereby precipitating calcium and magnesium ions in the sewage.

[0065] Reference Manual Attached Figure 1 , Figure 2 as well as Figure 3The sewage treatment equipment also includes a scraper assembly 7, which includes a first scraper 71 and a second scraper 72. The first scraper 71 and the second scraper 72 are respectively installed on the top opening of the box body 1, and there is a scraping space 70 between the first scraper 71 and the second scraper 72. The width of the scraping space 70 is adapted to the thickness of the cathode plate 2. The position of the scraping space 70 corresponds to the position of the cathode plate 2. The cathode plate 2 can be pulled up and down between the first scraper 71 and the second scraper 72 to scrape the adsorbed substances on both sides of the cathode plate 2.

[0066] It is understandable that during use, the cathode plate 2 will be covered with scale, and if it is not removed in time, it will affect the sewage treatment efficiency of the entire device. In the present invention, the cathode plate 2 is located in the gap between the first scraper 71 and the second scraper 72. By pulling the cathode plate 2 upward, the left and right sides of the cathode plate 2 can move relative to the first scraper 71 and the second scraper 72 respectively, and the first scraper 71 and the second scraper 72 can scrape off the scale on both sides of the cathode plate 2. The scraper assembly 7 can simultaneously scrape the scale on the left and right sides of the cathode plate 2, and the scraping process is convenient and the scraping efficiency is high.

[0067] Reference Manual Attached Figure 1 and Figure 3 Furthermore, the sewage treatment equipment also includes a lifting component 8, which includes a connecting rod 81 and two lifting cylinders 82. The connecting rod 81 is located at the top opening of the box body 1, and the length extension direction of the connecting rod 1 is consistent with the length extension direction of the inner wall 11. The top of the cathode plate 2 is connected to the connecting rod 81, and the two lifting cylinders 82 are respectively connected to the two ends of the connecting rod 81. The lifting cylinder 82 can control the lifting of the connecting rod 81 to control the lifting of the cathode plate 2 to scrape the adsorbed matter on the cathode plate 2.

[0068] It should be noted that the cathode plates 2 in the accommodation space 10 are respectively connected to the connecting rods 81 of the lifting assembly 8. When the lifting cylinder 82 drives the connecting rods 81 to perform lifting motion, the connecting rods 81 can simultaneously drive all the cathode plates 2 in the accommodation space 10 to lift.

[0069] Reference Manual Attached Figure 4The cathode plate 2 comprises a cathode plate body 21, a mounting member 22 mounted in the middle of the top of the cathode plate body 21, and sliding stoppers 23 mounted on the cathode plate body 21 and located on both sides of the mounting member 22; one end of the mounting member 22 away from the cathode plate body 21 is connected to the connecting rod 81; two sliding grooves 710 are provided at preset positions at both ends of the first scraper 71, and the two sliding stoppers 23 are slidably mounted in the two sliding grooves 710. Preferably, the mounting member 22 is integrally formed with the cathode plate body 21.

[0070] It should be pointed out that the sliding limiter 23 of the cathode plate 2 cooperates with the sliding groove 710 of the first scraper 71 to limit the movement trajectory of the cathode plate 3, thereby preventing the cathode plate 2 from tilting relative to the first scraper 71 or the second scraper 72 and causing damage to the cathode plate 2.

[0071] Reference Manual Attached Figure 3 The bottom of the box body 1 has at least one sewage outlet 91, and each cathode area 11 is connected to at least one sewage outlet 91. The sewage treatment equipment also includes a sewage pipe 92, which is connected to at least one sewage outlet 91, and the sewage pipe 92 is inclined, and has a high end 921 and a low end 922, and the outlet of the sewage pipe is formed at the low end 922.

[0072] During use, the dirt scraped off the cathode plate 2 falls into the sewage outlet 91 corresponding to the bottom of the cathode area 11 , then enters the sewage pipe 92 , and leaves through the opening of the sewage pipe 92 .

[0073] Further, the bottom wall 135 of the box body 1 is low in the middle and high on both sides, and the sewage outlet 91 is located in the middle of the bottom wall 135. Preferably, the cross-sectional shape of the bottom wall 135 of the box body 1 is "V"-shaped. It should be pointed out that the box body 1 adopts a design of low in the middle and high on both sides, and the sewage outlet 91 is located in the middle of the bottom wall 1135 of the box body 1, which can facilitate the discharge of dirt in the accommodating space 10.

[0074] The semipermeable membrane 4 includes a frame and a membrane, wherein the frame is wrapped around the outside of the membrane; the semipermeable membrane installation position of the box 1 has an installation groove, and the frame of the semipermeable membrane 4 is installed in the installation groove. The ruthenium titanium iridium coating is located on the membrane of the semipermeable membrane 4.

[0075] It should be noted that, in this preferred embodiment, the cathode plate 2 and the semipermeable membrane 4 are detachably mounted on the inner wall of the box 1. When the semipermeable membrane 4 is mounted on the semipermeable membrane mounting position of the inner wall 11, the semipermeable membrane 4 separates the cathode plate 2 and the anode plate 3.

[0076] In some other preferred embodiments of the present invention, the semipermeable membrane 4 is stacked with the cathode plate 2, and the semipermeable membrane 4 is arranged on one side of the cathode plate 2. During the manufacturing process, a ruthenium titanium iridium coating is coated on one side of the cathode plate 2 to form the semipermeable membrane 4, and the ruthenium titanium iridium coating includes ruthenium dioxide, titanium dioxide and iridium metal.

[0077] It should be noted that the above embodiments can be freely combined as needed. The above are only preferred embodiments of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention, and these improvements and modifications should also be regarded as the protection scope of the present invention.

Claims

1. Sewage treatment equipment, characterized in that, include: A box body, wherein the box body has a containing space; at least one cathode plate; At least one anode plate, wherein the anode plate and the cathode plate are alternately arranged in the accommodation space along the length extension direction of the box body; At least one semi-permeable membrane, wherein at least one semi-permeable membrane is provided between the adjacent anode plate and the cathode plate, and the two sides of the semi-permeable membrane are the anode region and the cathode region respectively, the anode plate is located in the anode region, and the cathode plate is located in the cathode region; Each of the cathode regions has at least one cathode water inlet and at least one cathode water outlet, each of the anode regions has at least one anode water inlet and at least one anode water outlet, and the cathode water inlet and the cathode water outlet are respectively located on opposite sides of the cathode region, and the anode water inlet and the anode water outlet are respectively located on opposite sides of the anode region; The sewage treatment equipment further comprises a water inlet pipe, wherein the water inlet pipe is respectively connected to at least one cathode water inlet and at least one anode water inlet; The sewage treatment equipment further comprises an outlet pipe, wherein the outlet pipe comprises a cathode area outlet pipe and an anode area outlet pipe, wherein the anode area outlet pipe is connected to at least one anode outlet, and the cathode area outlet pipe is connected to at least one cathode outlet; The semipermeable membrane is stacked with the cathode plate, and the semipermeable membrane is arranged on one side of the cathode plate; a ruthenium titanium iridium coating is coated on one side of the cathode plate to form the semipermeable membrane.

2. The sewage treatment equipment according to claim 1, characterized in that: The height of the cathode water inlet in the cathode zone is higher than the height of the corresponding cathode water outlet, and the height of the anode water inlet in the anode zone is higher than the height of the corresponding anode water outlet.

3. The sewage treatment equipment according to claim 1, characterized in that: The height of the cathode water inlet in the cathode zone is lower than the height of the corresponding cathode water outlet, and the height of the anode water inlet in the anode zone is lower than the height of the corresponding anode water outlet.

4. The sewage treatment equipment according to claim 2, characterized in that: The box body comprises a front side wall, a rear side wall, a left side wall, a right side wall and a bottom wall, the front side wall, the rear side wall, the left side wall, the right side wall and the bottom wall surround and form the accommodation space, and the accommodation space has a top opening; The cathode water inlet of the cathode area is located on the right side wall, and the cathode water outlet is located on the left side wall or the bottom wall; The anode water inlet of the anode area is located on the right side wall, and the anode water outlet is located on the left side wall or the bottom wall.

5. The sewage treatment equipment according to claim 3, characterized in that: The box body comprises a front side wall, a rear side wall, a left side wall, a right side wall and a bottom wall, the front side wall, the rear side wall, the left side wall, the right side wall and the bottom wall surround and form the accommodation space, and the accommodation space has a top opening; The cathode water inlet of the cathode zone is located on the left side wall or the bottom wall, and the cathode water outlet is located on the right side wall; The anode water inlet of the anode area is located on the left side wall or the bottom wall, and the anode water outlet is located on the right side wall.

6. The sewage treatment equipment according to claim 1, characterized in that: The sewage treatment equipment further includes a scraper assembly, which includes a first scraper and a second scraper, wherein the first scraper and the second scraper are respectively installed at the top opening of the box body, and there is a scraping space between the first scraper and the second scraper, the width of the scraping space is adapted to the thickness of the cathode plate, the position of the scraping space corresponds to the position of the cathode plate, and the cathode plate can be pulled up and down between the first scraper and the second scraper to scrape the adsorbed substances on both sides of the cathode plate.

7. The sewage treatment equipment according to claim 6, characterized in that: The sewage treatment equipment further includes a lifting assembly, which includes a connecting rod and two lifting cylinders. The connecting rod is located at the top opening of the box body, and the length extension direction of the connecting rod is consistent with the length extension direction of the box body. The top of the cathode plate is connected to the connecting rod, and the two lifting cylinders are respectively connected to the two ends of the connecting rod. The lifting cylinders can control the lifting of the connecting rod to control the lifting of the cathode plate to scrape the adsorbed matter on the cathode plate.

8. The sewage treatment equipment according to claim 7, characterized in that: The cathode plate comprises a cathode plate body, a mounting piece installed in the middle of the top of the cathode plate body, and sliding limiters installed on the cathode plate body and located on both sides of the mounting piece; one end of the mounting piece away from the cathode plate body is connected to the connecting rod; two sliding grooves are provided at preset positions at both ends of the first scraper, and the two sliding limiters can be slidably installed in the two sliding grooves.

9. The sewage treatment equipment according to claim 6, characterized in that: The bottom of the box body has at least one sewage outlet, and each cathode area is connected to at least one sewage outlet.

10. The sewage treatment equipment according to claim 9, characterized in that: The sewage treatment equipment further comprises a sewage pipe, each of which is connected to at least one of the sewage outlets, and the sewage pipe is arranged obliquely, having a high end and a low end, and the outlet of the sewage pipe is formed at the low end.

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