Electrochemical sewage treatment device and ecological toilet

Abstract

This invention discloses an electrochemical wastewater treatment device and an ecological toilet, including a toilet bowl and a filter box. The filter box is located below the toilet bowl, and an installation box is located below the filter box. A partition divides the installation box into a left chamber and a right chamber. The bottom plate of the filter box has an outlet connecting to the left chamber. A primary purification tank is located in the left chamber, containing multiple electrode plates. The left side of the primary purification tank is movably connected to the installation box, and its right side is movably connected to the partition. A buffer mechanism and a circulating water pump mechanism are located below the primary purification tank. An opening is provided on the side wall of the primary purification tank, and a through hole is provided on the partition that communicates with the opening. Wastewater in the primary purification tank can flow into the right chamber through the opening and the through hole. The right chamber contains multiple electrode plates and a foam removal mechanism. This invention solves the problems of limited treatment efficiency, difficulty in removing pollutants, and large space occupation inherent in traditional ecological toilets.

Description

Technical Field

[0001] This invention relates to the field of wastewater treatment equipment technology, and in particular to an electrochemical wastewater treatment device and an ecological toilet. Background Technology

[0002] Existing ecological toilets mainly rely on biological treatment and simple physical filtration methods, which have low treatment efficiency and are difficult to effectively remove difficult-to-treat pollutants such as colloidal impurities, ammonia nitrogen, and heavy metals from water. In addition, the treatment systems of traditional devices have complex structures, large equipment size, occupy a lot of space, are inconvenient to install, and are difficult to apply in places with limited space (such as homes and public toilets).

[0003] Electrochemical methods offer significant advantages in treating toilet wastewater, primarily in the following aspects: First, electrochemical treatment efficiently removes organic matter and ammonia nitrogen from wastewater. Through electrocoagulation and electroflotation, pollutants are rapidly degraded into harmless substances, resulting in high treatment efficiency and fast reaction rates. Second, electrochemical methods effectively remove heavy metal ions from wastewater. Through electrochemical oxidation-reduction reactions, heavy metal ions are precipitated or transformed into more easily treated forms, preventing heavy metal pollution of the environment. Furthermore, the electrochemical treatment process eliminates the need for large amounts of chemical reagents, reducing the risk of secondary pollution.

[0004] The Chinese patent CN206188459U (Ecological Toilet and its Electrochemical Reactor) primarily utilizes an electrochemical reactor to purify water. By staggering vertically arranged anode and cathode plates, multiple electrochemical treatment zones are formed, effectively improving treatment efficiency. The advantages of this design lie in its compact structure, rational electrode plate arrangement, full utilization of the electrochemical reaction space, and stable support and electrical connection of the electrode plates achieved through the design of guide pins and connecting cylinders. However, this design has the following drawbacks: it mainly focuses on electrochemical treatment, lacking integrated design for other stages in the wastewater treatment process (such as solid-liquid separation, foam removal, and cyclic oxidation), resulting in a relatively simple treatment process; it lacks a linkage mechanism and automatic control system, relying mainly on manual operation, leading to a low degree of automation; and it primarily focuses on the design of the electrochemical reactor, lacking consideration for the overall wastewater treatment process of the ecological toilet, thus limiting its application scenarios.

[0005] Chinese patent CN110845059B (Electrochemical-based Wastewater Treatment Device) combines photocatalysis and electrochemical treatment units. It utilizes photocatalysis to degrade organic matter and electrochemical treatment to recover heavy metal ions, reducing the burden on subsequent treatment processes. The advantage of this approach lies in its strong comprehensive treatment capacity, effectively removing multiple pollutants, and enabling real-time monitoring and control of the treatment process through ion sensors and a control system. However, this approach has the following drawbacks: it involves multiple treatment units and a complex control system, resulting in a complex equipment structure and high installation and maintenance costs. Both photocatalysis and electrochemical treatment consume electrical energy, especially the photocatalysis unit, which has high requirements for light intensity and energy consumption. Due to the involvement of multiple treatment units, the equipment is large in size and occupies a significant area, making it unsuitable for applications in space-constrained scenarios such as ecological toilets. Summary of the Invention

[0006] The purpose of this invention is to provide an electrochemical wastewater treatment device and an ecological toilet to solve the problems of limited treatment efficiency, difficulty in removing pollutants, and large space occupation of existing traditional devices.

[0007] This invention is achieved through the following technical solution:

[0008] An electrochemical wastewater treatment device includes a filter box containing a filter screen for solid-liquid separation. A mounting box is located below the filter box along the direction of gravity of the wastewater. The mounting box contains a partition that divides the mounting box into a left chamber and a right chamber. An outlet communicating with the left chamber is located on the bottom plate of the filter box. A primary purification box is located in the left chamber, containing multiple first anode plates and multiple first cathode plates. The left side of the primary purification box is movably connected to the mounting box along the direction perpendicular to gravity of the wastewater, and the right side of the primary purification box is movably connected to the partition. Below the primary purification tank, there is a buffer mechanism and a circulating water pump mechanism. An opening is provided on the side wall of the primary purification tank, and a through hole is provided on the partition plate to communicate with the opening. Wastewater in the primary purification tank can flow into the right chamber through the opening and the through hole. The right chamber contains multiple second anode plates, multiple second cathode plates, and a foam removal mechanism. When the wastewater in the primary purification tank reaches the load limit of the buffer mechanism, the primary purification tank moves downwards, connecting the opening and the through hole, and driving the foam removal mechanism to clean the foam on the liquid surface of the right chamber. Simultaneously, the circulating water pump mechanism is driven to agitate the liquid in the right chamber.

[0009] Preferably, the foam removal mechanism includes a perforation on the partition and a connecting rod on the side wall of the primary purification chamber. The connecting rod extends into the right chamber through the perforation, with one end connected to the side wall of the primary purification chamber and the other end having a vertical rod. The right chamber also includes a first sprocket, a second sprocket, and a chain matching the first and second sprockets. The first and second sprockets are rotatably connected to the inner wall of the right chamber via their respective shafts. A third gear segment is fixedly mounted on the shaft of the first sprocket, and a first gear segment matching the third gear segment is mounted on the connecting rod. When the primary purification chamber reciprocates, the first sprocket rotates via the connecting rod, the vertical rod, and the first gear segment on the vertical rod, thereby driving the chain to rotate reciprocally. The chain is divided into an upper chain and a lower chain, with a collection mechanism movably connected to the lower chain. When the chain rotates, the collection mechanism can remove foam from the liquid surface of the right chamber along the chain's movement path.

[0010] Preferably, the collection mechanism includes a cleaning plate perpendicular to the liquid surface in the right chamber and two collection plates. Each collection plate is vertically mounted on the cleaning plate. A connecting plate is provided above the cleaning plate, and a locking rod is provided on the connecting plate. The locking rod hinges the connecting plate to the chain. A collection space is formed between the two collection plates to prevent foam from being squeezed out by the cleaning plate. A drain outlet is provided on the side wall of the right chamber.

[0011] Preferably, the buffer mechanism includes a guide cylinder disposed on the lower side of the primary purification chamber, a drive rod disposed inside the guide cylinder, a fixed cylinder disposed on the bottom plate of the left chamber, and a spring connecting the guide cylinder and the fixed cylinder, the spring being sleeved on the outer wall of the drive rod; when the spring is in the initial state, the opening is not connected to the through hole.

[0012] Preferably, the circulating water pumping mechanism includes a pump body disposed on the bottom plate of the left chamber, the pump body having a first pump wheel and a second pump wheel arranged horizontally; it also includes a first water pipe and a second water pipe, the first water pipe being disposed above the first pump wheel and the second pump wheel, and the second water pipe being disposed below the first pump wheel and the second pump wheel; both the first water pipe and the second water pipe are connected to the right chamber; the upper end of the drive rod is movably connected to the guide cylinder, and both sides of the lower end of the drive rod are provided with second gear segments; a first rotating wheel is fixedly disposed on the rotating shaft of the first pump wheel, and a second rotating wheel is fixedly disposed on the rotating shaft of the second pump wheel; the second gear segments are matched with the first rotating wheel and the second rotating wheel; when the drive rod moves along its axis, it can cause the first pump wheel and the second pump wheel to rotate in opposite directions through the first rotating wheel and the second rotating wheel, thereby pumping water into the right chamber.

[0013] Preferably, the centers of the first sprocket and the second sprocket are on the same horizontal line, and the diameter of the first sprocket is larger than the diameter of the second sprocket.

[0014] Preferably, both collecting plates are provided with wedge-shaped blocks, and the thickness of the wedge-shaped blocks gradually decreases along the collecting direction of the collecting plates.

[0015] Preferably, the electrochemical wastewater treatment device further includes an air purification mechanism, which includes a ventilation pipe, each of which is connected to a first pipe, a second pipe, and a drain pipe; the first pipe is connected to a filter box, and the second pipe is connected to a right chamber; the drain pipe is located inside the drain outlet; one end of the ventilation pipe is connected to a collection tank, and the other end of the ventilation pipe is connected to a purifier, which is located above the ground; the inner wall of the primary purification box is provided with multiple first anode plates and multiple first cathode plates, which are arranged crosswise, and a gap is left between the lower ends of the first anode plates and the first cathode plates and the bottom plate of the primary purification box.

[0016] Preferably, the first pipe is provided with a first one-way valve, and the second pipe is provided with a second one-way valve; the first one-way valve and the second one-way valve allow the gas in the filter box and the right chamber to enter the vent pipe.

[0017] An ecological toilet includes the aforementioned electrochemical sewage treatment device, and also includes a toilet bowl, which is located above and in communication with the filter box.

[0018] Compared with existing technologies, this invention has the following advantages and beneficial effects: The technical solution of this invention achieves efficient, compact, and automated wastewater treatment through the coordinated operation of electrochemical components and a linkage mechanism. This solution utilizes vertically arranged and staggered anode and cathode plates to form multiple electrochemical treatment zones, effectively improving electrochemical reaction efficiency and rapidly removing colloidal impurities, ammonia nitrogen, heavy metals, and other pollutants from wastewater. Furthermore, the linkage mechanism enables automatic reciprocating motion of the purification tank and foam removal, reducing manual intervention and improving treatment efficiency. Overall, this technical solution has significant advantages in treatment efficiency, pollutant removal capacity, and automation, and its compact structure makes it suitable for application in space-constrained scenarios such as ecological toilets. Attached Figure Description

[0019] The accompanying drawings, which are included to provide a further understanding of embodiments of the invention and form part of this application, do not constitute a limitation thereof. In the drawings:

[0020] Figure 1 This is a schematic diagram of the overall structure of the eco-toilet of the present invention;

[0021] Figure 2 This is a schematic diagram of the wastewater treatment device of the present invention;

[0022] Figure 3 This is a schematic diagram of the primary purification chamber structure of the present invention;

[0023] Figure 4 for Figure 2 A magnified view of a portion of the image;

[0024] Figure 5 This is a top view of the circulating water pump mechanism of the present invention;

[0025] Figure 6 This is a side view of the circulating water pump mechanism of the present invention;

[0026] Figure 7 This is a schematic diagram showing the installation positions of the cleaning plate, collecting plate, connecting plate, and locking rod of the present invention;

[0027] Figure 8 This is a schematic diagram of the foam removal mechanism of the present invention;

[0028] Figure 9 This is a top view of the foam removal mechanism of the present invention.

[0029] The reference numerals in the attached figures represent:

[0030] 1. Toilet,

[0031] 2. Filter box, 201. Filter screen, 202. Outlet, 203. First check valve.

[0032] 3. Mounting box; 301. Partition plate; 3011. Through hole; 302. Guide cylinder; 303. Drive rod; 3031. Second gear section; 304. Spring; 305. Pump body; 306. First pump wheel; 3061. First rotor; 3062. Second rotor; 307. Second pump wheel; 308. First water pipe; 309. Second water pipe.

[0033] 4. Primary purification chamber; 401. Scraper; 402. First anode plate; 403. First cathode plate; 404. Connecting rod; 405. Vertical rod; 406. First gear section; 407. Guide rod; 408. Opening.

[0034] 501, Second anode plate; 502, Second cathode plate; 503, Second check valve; 504, Collection port; 505, Sewage outlet; 6, Collection pipe; 7, Vent pipe; 701, First pipeline; 702, Second pipeline; 703, Sewage pipe; 704, Collection tank; 8, Purifier.

[0035] 901, First sprocket; 9011, Third gear segment; 902, Second sprocket; 903, Chain; 904, Cleaning plate; 905, Collection plate; 906, Connecting plate; 9061, Locking rod. Detailed Implementation

[0036] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Based on the described embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention. The illustrative embodiments and descriptions of the present invention are only for explaining the present invention and are not intended to limit the present invention. It should be noted that the present invention is already in the actual research and development stage.

[0037] Unless otherwise defined, the technical or scientific terms used in this invention shall have the ordinary meaning understood by one of ordinary skill in the art to which this invention pertains. The terms "first," "second," and similar terms used in this invention do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Terms such as "comprising" or "including" mean that the element or object preceding the word encompasses the elements or objects listed following the word and their equivalents, without excluding other elements or objects.

[0038] Traditional ecological toilets primarily rely on biological treatment and simple physical filtration, resulting in low treatment efficiency and difficulty in effectively removing stubborn pollutants such as colloidal impurities, ammonia nitrogen, and heavy metals from wastewater. Biological treatment requires long reaction times, is sensitive to environmental conditions, and its treatment effect is unstable. Furthermore, traditional devices typically employ multi-stage biological treatment or physical filtration systems, resulting in large, complex, and space-consuming equipment that is inconvenient to install and unsuitable for space-constrained locations (such as homes and public toilets). These problems make it difficult for traditional devices to meet the demands for efficient, compact, and automated wastewater treatment. In contrast, electrochemical treatment methods can rapidly remove multiple pollutants and have a compact structure, making them suitable for achieving efficient wastewater treatment in limited spaces.

[0039] Example 1:

[0040] like Figure 1 , Figure 2As shown, an electrochemical wastewater treatment device includes a filter box 2, which contains a filter screen 201 for separating solids and liquids. A mounting box 3 is located below the filter box 2 along the direction of gravity of the wastewater. A partition 301 divides the mounting box 3 into a left chamber and a right chamber. An outlet 202 communicating with the left chamber is located on the bottom plate of the filter box 2. A primary purification box 4 is located inside the left chamber, containing multiple first anode plates 402 and multiple first cathode plates 403. The left side of the primary purification box 4 is movably connected to the mounting box 3 along the direction perpendicular to the gravity of the wastewater, and the right side is movably connected to the partition 301. Below the primary purification box 4 is a... The system includes a buffer mechanism and a circulating water pump mechanism. The side wall of the primary purification tank 4 has an opening 408, and the partition 301 has a through hole 3011 that communicates with the opening 408. Wastewater in the primary purification tank 4 can flow into the right chamber through the opening 408 and the through hole 3011. The right chamber contains multiple second anode plates 501 and multiple second cathode plates 502, and also includes a foam removal mechanism. When the wastewater in the primary purification tank 4 reaches the load limit of the buffer mechanism, the primary purification tank 4 moves downward, connecting the opening 408 and the through hole 3011, and driving the foam removal mechanism to clean the foam on the liquid surface of the right chamber. Simultaneously, the circulating water pump mechanism is driven to agitate the liquid in the right chamber, promoting the reaction.

[0041] It should be noted that the partition 301 not only separates the space but also guides the water flow and supports the primary purification tank 4. The partition 301 divides the installation box 3 into a left chamber and a right chamber. The left chamber houses the primary purification tank 4, while the right chamber is used for subsequent secondary purification treatment. The design of the partition 301 ensures that wastewater flows naturally into the left chamber under gravity and, under specific conditions, into the right chamber, achieving staged treatment.

[0042] The core of this solution lies in achieving efficient wastewater treatment through a combination of gravity-driven and electrochemical processes. Filter box 2 first performs preliminary solid-liquid separation using filter screen 201 to remove larger particles. The filtered wastewater then enters the left chamber and undergoes electrocoagulation in the primary purification tank 4 to remove colloidal impurities and pollutants. Electrocoagulation utilizes the electric field generated by the electrode plates to cause colloidal particles in the water to flocculate and precipitate, effectively removing pollutants.

[0043] When the wastewater in the primary purification tank 4 reaches its carrying capacity limit, gravity causes the purification tank to move downwards, connecting it to the right chamber. The wastewater flows into the right chamber for secondary treatment. Using electroflotation, flocculated sediment is carried to the surface by air bubbles to form a foam layer, realizing automated wastewater flow. Gravity-driven operation also reduces the complexity of mechanical parts and energy consumption.

[0044] In the primary purification tank 4, electrocoagulation is used to remove colloidal impurities and pollutants from the water. The principle is that an electric field is generated between the anode and cathode during electrolysis. Colloidal particles in the water lose stability under the influence of this electric field and adsorb onto the electrode surface, forming flocs. These flocs gradually settle to the bottom of the purification tank, thus achieving solid-liquid separation. Electrocoagulation not only effectively removes suspended solids but also degrades some organic matter and ammonia nitrogen through electrochemical reactions.

[0045] In the right chamber, electroflotation is used for further wastewater treatment. It works by utilizing tiny bubbles (such as hydrogen and oxygen) generated by electrolysis. These bubbles adhere to the flocs, reducing their density and causing them to float to the surface, forming a foam layer. This foam layer can be removed mechanically, thus separating and removing suspended solids. Electroflotation not only improves solid-liquid separation efficiency but also enhances the oxidation reaction through the agitation of the bubbles, further degrading pollutants.

[0046] It should be noted that the reciprocating motion of the primary purification tank 4 is achieved through the guide rod 407 guide rail system. In this design, the guide rail is fixedly installed on the side wall of the left chamber, while the guide rod 407 is connected to both sides of the primary purification tank 4. The guide rod 407 can slide freely on the guide rail, allowing the purification tank to move up and down. When the sewage accumulates to a certain weight, the guide rod 407 moves downward along the guide rail under the action of gravity, causing the purification tank to descend. The advantages are simple structure, smooth movement, and ease of maintenance. The guide rod 407 guide rail system can effectively support the weight of the purification tank and ensure its stability during movement, avoiding tilting or jamming. In addition, the guide rod 407 guide rail has low friction, which can reduce movement resistance and extend the service life of the equipment.

[0047] When the wastewater in the primary purification tank 4 reaches its carrying capacity limit, the tank descends, connecting to the right chamber, allowing wastewater to flow into the right chamber for electroflotation treatment. At this time, the foam removal mechanism, using a linkage system of 404 and chain 903, drives the cleaning plate 904 and collection plate 905 to move along the liquid surface, removing and collecting the foam layer generated by electroflotation to prevent foam overflow. Simultaneously, the circulating pump mechanism, through the linkage of drive rod 303 and the primary purification tank 4, drives the pump wheel to rotate in the opposite direction, circulating the liquid in the right chamber and enhancing the oxidation reaction. This linkage not only achieves automated foam removal and liquid circulation but also further improves the treatment efficiency of electroflotation through circulation, ensuring that pollutants are fully oxidized and decomposed, ultimately enabling the wastewater to meet discharge or reuse standards.

[0048] The collection port 504 and collection pipe 6 are installed at the bottom of the right chamber to effectively collect clean water that has undergone electrochemical treatment and meets discharge or reuse standards. After the electrochemical reaction is completed, most of the contaminants have been removed from the water in the right chamber, and the water quality has been purified. Through the collection port 504 and collection pipe 6, the treated clean water can be led out from the bottom of the chamber, avoiding mixing with untreated wastewater, ensuring water quality stability, and facilitating subsequent reuse or discharge. At the same time, the design of collection pipe 6 can also effectively prevent foam or floating matter from entering the collection system, ensuring that the collected water is clean and meets reuse or discharge standards.

[0049] like Figure 1 , Figure 2 , Figure 8 and Figure 9 As shown, as a further improvement of this embodiment, the foam removal mechanism includes a perforation on the partition 301 and a connecting rod 404 on the side wall of the primary purification chamber 4. The connecting rod 404 extends into the right chamber through the perforation. One end of the connecting rod 404 is connected to the side wall of the primary purification chamber 4, and the other end of the connecting rod 404 is provided with a vertical rod 405. The right chamber is also provided with a first sprocket 901, a second sprocket 902, and a chain 903 matching the first sprocket 901 and the second sprocket 902. The first sprocket 901 and the second sprocket 902 are rotatably connected to the right chamber through their respective shafts. On the wall; a third gear segment 9011 is fixedly installed on the shaft of the first sprocket 901, and a first gear segment 406 matching the third gear segment 9011 is installed on the connecting rod 404; when the primary purification box 4 moves back and forth, the first sprocket 901 is rotated through the connecting rod 404, the vertical rod 405 and the first gear segment 406 on the vertical rod 405, thereby driving the chain 903 to rotate back and forth; the chain 903 is divided into an upper chain and a lower chain, and a collection mechanism is movably connected to the lower chain; when the chain 903 rotates, the collection mechanism can remove the foam on the liquid surface of the right chamber along the movement path of the chain 903.

[0050] Working principle:

[0051] When the wastewater in the primary purification tank 4 reaches its carrying capacity limit, the tank moves downward under gravity, driving the vertical rod 405 to move via the connecting rod 404. The first gear segment 406 on the vertical rod 405 meshes with the first sprocket 901, driving the first sprocket 901 to rotate, which in turn drives the second sprocket 902 to rotate via the chain 903. The reciprocating motion of the chain 903 drives the collection mechanism mounted on the chain 903 to move along the liquid surface in the right chamber. The cleaning plate 904 in the collection mechanism pushes the foam on the liquid surface towards the collection plate 905, where the foam is collected in the space between the two collection plates 905 and discharged through the drain port 505. This linkage process achieves automatic foam removal and collection, ensuring that the foam generated by the electroflotation process does not affect subsequent treatment processes, improving overall treatment efficiency, and preventing foam overflow.

[0052] like Figure 7 , Figure 8 As shown, as a further improvement of this embodiment, the collection mechanism includes a cleaning plate 904 perpendicular to the liquid surface in the right chamber and two collection plates 905. Each collection plate 905 is vertically mounted on the cleaning plate 904. A connecting plate 906 is provided above the cleaning plate 904, and a locking rod 9061 is provided on the connecting plate 906. The locking rod 9061 hinges the connecting plate 906 to the chain 903. A collection space is formed between the two collection plates 905 to prevent foam from being squeezed out by the cleaning plate. A drain port 505 is provided on the side wall of the right chamber.

[0053] It should be noted that the foam removal mechanism not only scrapes away foam, but also includes the functions of foam collection and preventing foam overflow. The cleaning plate 904 and the collection plate 905 in the collection mechanism work together to ensure that the foam is effectively collected and guided to the drain outlet 505.

[0054] Chain 903 reciprocates under the drive of a sprocket. Connecting plate 906 is hinged to chain 903 via locking rod 9061, driving cleaning plate 904 to move along the liquid surface. Cleaning plate 904 pushes foam on the liquid surface between two vertically installed collecting plates 905. The foam is collected in the space formed by the collecting plates 905 and discharged through drain port 505. The design of collecting plates 905 ensures that foam is effectively contained, preventing it from being pushed back to the liquid surface or overflowing by cleaning plate 904. The collection mechanism not only removes foam but also ensures reliable collection and discharge, avoiding the impact of foam on subsequent treatment processes. The design of this mechanism ensures the automation and efficiency of the foam removal process, reduces manual intervention, and improves overall treatment efficiency.

[0055] like Figure 1 and Figure 4 As shown, as a further improvement of this embodiment, the buffer mechanism includes a guide cylinder 302 located on the lower side of the primary purification chamber 4, a drive rod 303 inside the guide cylinder 302, a fixed cylinder on the bottom plate of the left chamber, and a spring 304 connecting the guide cylinder 302 and the fixed cylinder. The spring 304 is sleeved on the outer wall of the drive rod 303. When the spring 304 is in the initial state, the opening 408 is not connected to the through hole 3011.

[0056] When the wastewater in the primary purification tank 4 accumulates to a certain weight, the tank begins to descend under gravity. The guide cylinder 302 and drive rod 303 guide the tank to descend smoothly along a fixed path. During the descent, the spring 304 is compressed, absorbing the kinetic energy and providing cushioning to prevent sudden drops or violent vibrations. The rebound force of the spring 304 helps the tank stop stably after reaching its destination, ensuring accurate alignment with the secondary purification tank. This design not only achieves a smooth descent but also protects the equipment through cushioning, extending its service life.

[0057] The design of the guide cylinder 302 and the drive rod 303 ensures the smooth descent of the purification chamber, while the spring 304 absorbs energy through compression and rebound, thus playing a buffering role.

[0058] like Figure 2 , Figure 4 , Figure 5 and Figure 6 As shown, as a further improvement of this embodiment, the circulating water pump mechanism includes a pump body 305 disposed on the bottom plate of the left chamber, and a first pump wheel 306 and a second pump wheel 307 arranged horizontally inside the pump body 305; it also includes a first water pipe 308 and a second water pipe 309, the first water pipe 308 being disposed above the first pump wheel 306 and the second pump wheel 307, and the second water pipe 309 being disposed below the first pump wheel 306 and the second pump wheel 307; both the first water pipe 308 and the second water pipe 309 are connected to the right chamber; the upper end of the drive rod 303 is movably connected to the guide. Inside the cylinder 302, a second gear segment 3031 is provided on both sides of the lower end of the drive rod 303; a first rotating wheel 3061 is fixedly provided on the shaft of the first pump wheel 306, and a second rotating wheel 3062 is fixedly provided on the shaft of the second pump wheel 307; the second gear segment 3031 is matched with the first rotating wheel 3061 and the second rotating wheel 3062; when the drive rod 303 moves along its axis, it can cause the first pump wheel 306 and the second pump wheel 307 to rotate in opposite directions through the first rotating wheel 3061 and the second rotating wheel 3062, thereby pumping water into the liquid in the right chamber.

[0059] When the primary purification tank 4 descends, the drive rod 303 moves within the guide cylinder 302. The gears on both sides of the lower end of the drive rod 303 mesh with the gears of the first pump wheel 306 and the second pump wheel 307, driving the pump wheels to rotate in the opposite direction. The rotation of the first pump wheel 306 and the second pump wheel 307 draws liquid from one side of the right chamber and injects it from the other side through the first water pipe 308 and the second water pipe 309, forming a circulating flow of liquid, which enhances the effect of the oxidation reaction and improves the treatment efficiency of the electroflotation process.

[0060] As a further improvement to this embodiment, the centers of the first sprocket 901 and the second sprocket 902 are on the same horizontal line, and the diameter of the first sprocket 901 is larger than the diameter of the second sprocket 902.

[0061] By utilizing the difference in sprocket diameters and the horizontal alignment of their centers, chain 903 forms a triangular trajectory. As chain 903 drives the collection mechanism, the cleaning plate 904 gradually rises as it moves from left to right, ultimately elevating the collected foam above the liquid surface for effective delivery to the drain 505. This design is not merely a simple transmission adjustment, but rather a means to achieve foam elevation and effective discharge, preventing foam from falling back into the liquid or overflowing.

[0062] Working principle:

[0063] Driven by a sprocket, chain 903 moves, and the collecting mechanism moves horizontally from left to right and gradually rises along the path of chain 903. Cleaning plate 904 pushes foam from the liquid surface towards collecting plate 905, where the foam is collected in the space between the collecting plates 905. As chain 903 rises, the foam is lifted above the liquid surface and discharged through drain port 505.

[0064] Example 2:

[0065] like Figure 7 As shown, as an improvement to the above embodiment, this embodiment can solve more problems. Each collecting plate 905 is provided with a wedge-shaped block, and the thickness of the wedge-shaped block gradually decreases along the collecting direction of the collecting plate. The wedge-shaped block is designed to guide the foam into the collecting space and prevent the foam from being pushed back to the liquid surface or overflowing by the cleaning plate 904. When the collecting mechanism moves along the liquid surface, the cleaning plate 904 pushes the foam towards the collecting plate 905, and the wedge-shaped block guides the foam to slide into the collecting space along the inclined surface. The angle and intersection point of the wedge-shaped block are designed to ensure that the foam can smoothly enter the collecting space without being pushed back to the liquid surface.

[0066] like Figure 1 As shown, as an improved embodiment, the electrochemical wastewater treatment device of the present invention further includes an air purification mechanism, which includes a ventilation pipe 7. Each ventilation pipe 7 is connected to a first pipe 701, a second pipe 702, and a sewage pipe 703. The first pipe 701 is connected to the filter box 2, and the second pipe 702 is connected to the right chamber. The sewage pipe 703 is located in the sewage outlet 505. One end of the ventilation pipe 7 is connected to a collection tank 704, and the other end of the ventilation pipe 7 is connected to a purifier 8, which is located above the ground.

[0067] The collection tank 704 is used to collect foam falling from the drain pipe 703, preventing foam overflow or secondary pollution, and ensuring that the foam is effectively collected and treated after the gas and liquid are separated. The function of the collection tank 704 can also be achieved through another method: using a blower. The blower's role is to force ventilation, blowing the foam and gas upwards and directly sending them into the purifier 8 for treatment. Compared to the collection tank 704, the blower can be installed near the purifier 8, saving the space required for the collection tank 704; the blower directly sends the foam and gas into the purifier 8, avoiding the risk of foam accumulation and overflow in the collection tank 704, thus improving treatment efficiency; the blower can be automatically controlled, adjusting the airflow according to the amount of gas and foam generated, achieving a more precise treatment process. The blower can not only treat foam but also be used for gas circulation and purification, enhancing the system's versatility.

[0068] Example 3:

[0069] like Figure 1 As shown, as an improvement on the above embodiment, this embodiment can solve more problems. A first one-way valve 203 is provided in the first pipe 701, and a second one-way valve 503 is provided in the second pipe 702. The first one-way valve 203 and the second one-way valve 503 allow gas from the filter box 2 and the right chamber to enter the vent pipe 7. When the gas pressure in the filter box 2 and the right chamber is higher than the pressure in the vent pipe 7, the gas pushes open the valve disc of the one-way valve and enters the vent pipe 7 and the purifier 8 through the pipes. When the pressure in the vent pipe 7 is higher than the pressure in the filter box 2 and the right chamber, the one-way valve automatically closes to prevent gas backflow.

[0070] like Figure 3 As shown, as an improved solution of this embodiment, multiple first anode plates 402 and multiple first cathode plates 403 are all disposed on the inner wall of the primary purification box 4. The first anode plates 402 and the first cathode plates 403 are arranged crosswise, and a gap is left between the lower ends of the first anode plates 402 and the first cathode plates 403 and the bottom plate of the primary purification box 4.

[0071] A gap is left between the lower ends of the first anode plate 402 and the first cathode plate 403 and the bottom plate of the primary purification tank 4. This is to prevent direct contact between the electrode plates and the bottom of the tank, avoiding wear or short circuits caused by contact, and more importantly, to provide a channel for flocculation and sedimentation. During the electrochemical treatment process, colloidal particles and pollutants in the water form flocs through electrocoagulation reactions. These flocs gradually settle to the bottom of the purification tank. If the electrode plates directly contact the bottom of the tank, the settled flocs may accumulate below the electrode plates, causing blockage and making cleaning difficult. The gap design ensures that the flocculated sediment can pass smoothly from below the electrode plates and flow along the gap into the opening 408 at the bottom of the primary purification tank 4, and finally flow out of the primary purification tank 4 through the through hole 3011 and enter the right chamber for subsequent treatment.

[0072] It should be noted that the first anode plate 402 and the first cathode plate 403 are the core components of the electrochemical treatment. The anode plate is used to generate an oxidant, and the cathode plate is used to generate a reducing agent, which together act on the pollutants in the wastewater. The cross arrangement and gap design ensure that the wastewater has sufficient contact with the electrode plates, thereby improving the efficiency of the electrochemical reaction. When the wastewater flows through the electrode plates, it can contact the anode and cathode evenly, ensuring the uniformity of the treatment effect.

[0073] Scrapers 401 are installed on both sides where the primary purification tank 4 contacts the left chamber to prevent suspended solids and flocs in the wastewater from adhering to the side walls of the tank as it descends, thus preventing pollutant residue or blockage. The function of the scrapers 401 is to scrape and remove any adhering material from the side walls of the tank during its descent, ensuring that all flocs and suspended solids can smoothly enter the right chamber for subsequent treatment, preventing pollutant accumulation within the purification tank and affecting the efficiency of electrochemical treatment.

[0074] Example 4:

[0075] Based on the above embodiments, this embodiment provides an ecological toilet, which integrates the above-mentioned electrochemical sewage treatment device below the ecological toilet. The ecological toilet also includes a toilet bowl 1, which is located above the filter box 2 and communicates with the filter box 2.

[0076] In summary, the solution of this invention achieves high treatment efficiency through the combination of electrochemical treatment and a linkage mechanism. The electrochemical method utilizes reactions such as electrocoagulation and electroflotation to rapidly remove colloidal impurities, ammonia nitrogen, and heavy metals from wastewater, with a treatment speed far exceeding that of traditional biological treatment methods. Simultaneously, the linkage mechanism design allows wastewater to flow automatically within the system without manual intervention, further improving treatment efficiency and ensuring that wastewater meets discharge or reuse standards within a short time. Traditional devices struggle to effectively treat difficult-to-treat pollutants such as ammonia nitrogen and heavy metals, while the solution of this invention effectively removes these stubborn pollutants through electrochemical oxidation-reduction reactions. The strong oxidants (such as hydroxyl radicals) generated during electrochemical treatment can completely decompose organic matter and ammonia nitrogen, while heavy metal ions are precipitated and removed through electrocoagulation. Furthermore, the microbubbles generated by electroflotation can bring suspended solids and flocs to the liquid surface, further improving the pollutant removal rate. The solution of this invention employs a compact structural design, integrating multiple treatment units into a small device and achieving an automated wastewater treatment process through a linkage mechanism. Compared to the complex systems of traditional devices, the solution of this invention reduces unnecessary mechanical parts and piping, simplifies the system structure, and significantly reduces the floor space required.

[0077] The above embodiments are only used to illustrate the technical solutions of this disclosure, and are not intended to limit it. Although this disclosure has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this disclosure. The following points need to be noted: In the accompanying drawings of the embodiments of this invention, only the structures involved in the embodiments of this invention are shown; other structures can refer to general designs. In the absence of conflict, features in the same embodiment and different embodiments of this invention can be combined with each other. The above descriptions are merely exemplary embodiments of this invention, and are not intended to limit the scope of protection of this invention. The scope of protection of this invention is determined by the appended claims.

Claims

1. An electrochemical wastewater treatment device, comprising a filter box (2), wherein the filter box (2) is provided with a filter screen (201) for separating solids and liquids, characterized in that, Along the direction of gravity of the sewage, a mounting box (3) is provided below the filter box (2). A partition (301) is provided inside the mounting box (3), which divides the mounting box (3) into a left chamber and a right chamber. An outlet (202) communicating with the left chamber is provided on the bottom plate of the filter box (2). A primary purification box (4) is provided inside the left chamber. A plurality of first anode plates (402) and a plurality of first cathode plates (403) are provided inside the primary purification box (4). Along the direction perpendicular to the gravity of the sewage, the left side of the primary purification box (4) is movably connected to the mounting box (3), and the right side of the primary purification box (4) is movably connected to the partition (301). A buffer mechanism and a circulating pump mechanism are provided below the primary purification box (4). The first-stage purification tank (4) has an opening (408) on its side wall, and the partition plate (301) has a through hole (3011) that can communicate with the opening (408). The sewage in the first-stage purification tank (4) can flow into the right chamber through the opening (408) and the through hole (3011). The right chamber is provided with a plurality of second anode plates (501), a plurality of second cathode plates (502), and a foam removal mechanism. When the sewage in the first-stage purification tank (4) reaches the bearing limit of the buffer mechanism, the first-stage purification tank (4) moves downward, connects the opening (408) and the through hole (3011), and drives the foam removal mechanism to clean the foam on the liquid surface of the right chamber. At the same time, it drives the circulating water pump mechanism to stir the liquid in the right chamber. The foam removal mechanism includes a perforation on the partition (301) and a connecting rod (404) on the side wall of the primary purification chamber (4). The connecting rod (404) extends into the right chamber through the perforation. One end of the connecting rod (404) is connected to the side wall of the primary purification chamber (4), and the other end of the connecting rod (404) is provided with a vertical rod (405). The right chamber is also provided with a first sprocket (901), a second sprocket (902), and a chain (903) matching the first sprocket (901) and the second sprocket (902). The first sprocket (901) and the second sprocket (902) are respectively connected by their respective... The shaft is rotatably connected to the inner wall of the right chamber; the shaft of the first sprocket (901) is fixedly provided with a third gear segment (9011); when the first-stage purification box (4) moves back and forth, the first sprocket (901) is rotated through the connecting rod (404), the vertical rod (405) and the first gear segment (406) on the vertical rod (405), thereby driving the chain (903) to rotate back and forth; the chain (903) is divided into an upper chain and a lower chain, and a collection mechanism is movably connected to the lower chain; when the chain (903) rotates, the collection mechanism can remove the foam on the liquid surface of the right chamber along the movement path of the chain (903); The buffer mechanism includes a guide cylinder (302) located on the lower side of the primary purification box (4), a drive rod (303) inside the guide cylinder (302), a fixed cylinder on the bottom plate of the left chamber, and a spring (304) connecting the guide cylinder (302) and the fixed cylinder. The spring (304) is sleeved on the outer wall of the drive rod (303). When the spring (304) is in the initial state, the opening (408) is not connected to the through hole (3011). The circulating water pump mechanism includes a pump body (305) located on the bottom plate of the left chamber, a first pump wheel (306) and a second pump wheel (307) arranged horizontally inside the pump body (305). It also includes a first water pipe (308) and a second water pipe (309). The first water pipe (308) is located above the first pump wheel (306) and the second pump wheel (307), and the second water pipe (309) is located above the first pump wheel (306) and the second pump wheel (307). Below the first pump wheel (306) and the second pump wheel (307); the first water pipe (308) and the second water pipe (309) are both connected to the right chamber; the upper end of the drive rod (303) is movably connected inside the guide cylinder (302), and the lower end of the drive rod (303) is provided with second gear segments (3031) on both sides; the first rotating wheel (3061) is fixedly provided on the shaft of the first pump wheel (306), and the second rotating wheel (3062) is fixedly provided on the shaft of the second pump wheel (307); the second gear segment (3031) matches the first rotating wheel (3061) and the second rotating wheel (3062); when the drive rod (303) moves along its axis, it can cause the first pump wheel (306) and the second pump wheel (307) to rotate in opposite directions through the first rotating wheel (3061) and the second rotating wheel (3062), thereby pumping water into the liquid in the right chamber.

2. The electrochemical wastewater treatment device according to claim 1, characterized in that, The collection mechanism includes a cleaning plate (904) perpendicular to the liquid surface in the right chamber and two collection plates (905). Each collection plate (905) is vertically mounted on the cleaning plate (904). A connecting plate (906) is provided above the cleaning plate (904). A locking rod (9061) is provided on the connecting plate (906), and the locking rod (9061) hinges the connecting plate (906) to the chain (903). A collection space is formed between the two collection plates (905) to prevent foam from being squeezed out by the cleaning plate. A drain port (505) is provided on the side wall of the right chamber.

3. The electrochemical wastewater treatment device according to claim 2, characterized in that, The centers of the first sprocket (901) and the second sprocket (902) are on the same horizontal line, and the diameter of the first sprocket (901) is larger than the diameter of the second sprocket (902).

4. The electrochemical wastewater treatment device according to claim 2, characterized in that, Both of the collecting plates (905) are provided with wedge-shaped blocks, and the thickness of the wedge-shaped blocks gradually decreases along the collecting direction of each collecting plate (905).

5. The electrochemical wastewater treatment device according to claim 4, characterized in that, The electrochemical wastewater treatment device further includes an air purification mechanism, which includes a ventilation pipe (7). The ventilation pipe (7) is connected to a first pipe (701), a second pipe (702), and a sewage pipe (703). The first pipe (701) is connected to a filter box (2), and the second pipe (702) is connected to the right chamber. The sewage pipe (703) is located inside the sewage outlet (505). One end of the ventilation pipe (7) is connected to a collection tank (704), and the other end of the ventilation pipe (7) is connected to a purifier (8), which is located above the ground. The inner wall of the primary purification box (4) is provided with a plurality of first anode plates (402) and a plurality of first cathode plates (403). The first anode plates (402) and the first cathode plates (403) are arranged in a cross pattern. There is a gap between the lower ends of the first anode plates (402) and the first cathode plates (403) and the bottom plate of the primary purification box (4).

6. The electrochemical wastewater treatment device according to claim 5, characterized in that, The first pipe (701) is provided with a first one-way valve (203), and the second pipe (702) is provided with a second one-way valve (503); the first one-way valve (203) and the second one-way valve (503) allow the gas in the filter box (2) and the right chamber to enter the vent pipe (7).

7. An ecological toilet, comprising the electrochemical wastewater treatment device according to any one of claims 1 to 6, characterized in that, The eco-toilet also includes a toilet (1), which is located above the filter box (2) and connected to the filter box (2).

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