A wastewater treatment device based on hydrogen production by electrolysis of water

Abstract

The present application relates to the technical field of environmental protection, specifically, a wastewater treatment device based on electrolytic water hydrogen production operation, which comprises a wastewater treatment tank and an electrolyzer, the wastewater treatment tank comprises a lower tank body and an upper tank cover, the electrolyzer is fixed on the upper tank cover, and water inlet pipes and water outlet pipes are communicated on both sides of the lower tank body; it also comprises a lifting unit, the lifting unit comprises a guide structure and a lifting structure, the guide structure comprises a first water guide and a water energy driver, the water energy driver is arranged at the communication position of the treatment bin and the water inlet pipe, and comprises a first paddle driven by water flow, and the first paddle is in transmission connection with the lifting structure through a transmission assembly. The present application drives the lifting structure by the flow kinetic energy of the wastewater in the water inlet pipe, continuously lifts the heavy metal precipitate deposited at the bottom of the treatment bin to the electrolytic electrode area for repeated purification, does not need external power intervention in the whole process, eliminates the secondary pollution risk caused by mechanical dynamic seal leakage, and is stable in low-consumption operation.

Description

Technical Field

[0001] This invention relates to the field of environmental protection technology, and more specifically, to a wastewater treatment device based on hydrogen production through water electrolysis. Background Technology

[0002] Electrolysis of water to produce hydrogen for treating heavy metal wastewater is a key technology for the synergistic recovery of environmental governance and clean energy. It uses electrolysis to convert heavy metal ions into insoluble precipitates, which are then separated, while simultaneously producing hydrogen. This approach combines pollution removal with resource regeneration, making it a key green process of interest in the field of "research and experimental development of environmental protection technologies." During operation, the heavy metal precipitates must maintain proper circulation and suspension between the electrolyzer plates to prevent continuous deposition at the bottom of the wastewater tank. Otherwise, electrode passivation, increased tank pressure, and a sharp drop in hydrogen production efficiency will occur, ultimately leading to effluent quality exceeding standards and failing to meet environmental emission standards.

[0003] In existing technologies, active power intervention methods such as mechanical agitation or circulation pumps are commonly used to achieve the circulating suspension of sediments. Mechanical agitation uses a motor to drive the blades to rotate, while circulation pumps suck up the bottom sludge and reinject it to the top of the tank. These power devices require continuous operation, not only consuming a large amount of additional electrical energy and reducing the overall energy gain from hydrogen production and water purification, but more seriously, their rotating shaft seals and pipe connections are prone to leakage under the corrosive effects of heavy metal waste liquid. The high-concentration waste liquid that seeps out can pollute the surrounding soil and groundwater, posing a serious secondary environmental risk. If natural flotation is used to lift the sediment using hydrogen bubbles generated by electrolysis, the small size of the bubbles and their random upward path result in limited and uneven lifting force within a large tank, failing to effectively eliminate the bottom sedimentation dead zones. After long-term operation, the sediment becomes severely compacted, ultimately requiring shutdown and dredging.

[0004] On the other hand, in order to guide the precipitate to repeatedly pass through the electrolysis reaction zone for thorough purification, existing solutions often adopt the introduction of adjustable mechanical flow guiding or linkage devices, which requires the addition of electrical components such as flow meters, electric actuators, and PLC controllers. This significantly increases the difficulty and manufacturing cost of explosion-proof design and insulation isolation, and also results in a high failure rate, making it difficult to guarantee the long-term reliable operation of the device. Summary of the Invention

[0005] The purpose of this invention is to solve the problems in the prior art, such as the additional energy consumption and dynamic seal leakage and pollution risks caused by the continuous power intervention of mechanical agitation or circulating pump, as well as the high manufacturing cost, poor anti-interference ability and insufficient reliability of long-term operation caused by the introduction of electrical linkage control.

[0006] To achieve the above objectives, the present invention provides a wastewater treatment device based on hydrogen production through water electrolysis, comprising a wastewater treatment tank and an electrolyzer. The wastewater treatment tank includes a lower tank body and an upper tank cover covering the top of the lower tank body. The electrolyzer is fixedly mounted on the upper tank cover, with its bottom electrolysis electrode located inside the treatment chamber of the lower tank body. A gas collecting pipe for collecting gas is also provided at the bottom of the upper tank cover. Water inlet pipes and water outlet pipes are connected to both the left and right sides of the lower tank body. The water inlet pipes are used to introduce heavy metal wastewater into the treatment chamber, and the wastewater is discharged through the water outlet pipes after electrolysis treatment.

[0007] This device also includes a lifting unit, which includes a guide structure and a lifting structure;

[0008] The guiding structure includes a first water inlet and a water-powered actuator. The first water inlet guides the wastewater flowing through the inlet pipe to the electrolysis electrode area. The water-powered actuator is located at the connection between the treatment chamber and the inlet pipe and includes a first blade driven by the water flow in the inlet pipe. The first blade is connected to the lifting structure via a transmission assembly to drive the lifting structure to lift the sediment settled at the bottom of the treatment chamber to the top of the treatment chamber using the water flow in the inlet pipe, forming a continuous water circulation.

[0009] As a further improvement to this technical solution, the treatment chamber is generally wider at the top and narrower at the bottom. The water inlet pipe is connected to the narrow area at the bottom of the treatment chamber, and the water outlet pipe is located above the water inlet pipe and is connected to the wide area at the top of the treatment chamber.

[0010] As a further improvement to this technical solution, at least one side wall of the lower narrow section of the processing chamber is an inclined surface, which gradually narrows downward from the upper wide section of the processing chamber, and is used to guide the sediment to the bottom plane of the processing chamber.

[0011] As a further improvement to this technical solution, a filter is provided at the connection between the treatment chamber and the outlet pipe, and the filter is used to filter out sediments in the water.

[0012] As a further improvement to this technical solution, the first water inlet is configured as a "J"-shaped structure installed inside the treatment chamber, with one end connected to the water inlet pipe and the outlet of the other end facing the electrolysis electrode area of ​​the electrolyzer.

[0013] As a further improvement to this technical solution, the water-powered actuator includes a component housing with an overall "convex" shaped structure symmetrically arranged at the left and right ends of the lower housing. A water flow cavity penetrating the surface is opened at the upper part of the housing, and the water flow cavity is connected to the water inlet pipe. The first blade is rotatably engaged in the water flow cavity. A first rotating shaft and two second rotating shafts are rotatably connected to the bottom of the component housing. The shaft of the first blade is drivenly connected to the first rotating shaft, the first rotating shaft is drivenly connected to the second rotating shaft, and the second rotating shaft is connected to the lifting structure. The first blade, the first rotating shaft, and the second rotating shaft together constitute the transmission component.

[0014] As a further improvement to this technical solution, the lifting structure includes a lifting aid structure connected to the second rotating shaft and a second water inlet disposed on both sides of the first water inlet. The second rotating shaft drives the lifting aid structure to perform horizontal reciprocating motion along the bottom plane of the treatment chamber to lift the sediment accumulated on the bottom plane of the treatment chamber. At the same time, the lifting aid structure drives the second water inlet to move the lifted sediment upward to the electrolysis area.

[0015] As a further improvement to this technical solution, the inner side of the processing chamber is provided with a horizontal slide rail, and the lifting structure includes a lead screw and a reciprocating frame that cooperates with the lead screw transmission. The two ends of the lead screw are respectively coaxially connected to one end of two second rotating shafts. The left and right side walls of the reciprocating frame are slidably engaged with the slide rail, and the reciprocating frame is connected with a shovel plate whose bottom contacts the bottom plane of the processing chamber.

[0016] As a further improvement to this technical solution, the second water inlet includes fenders installed on both sides of the first water inlet and a hollow shaft fixedly connected to the middle of the fender. The lead screw passes through the bottom of the hollow shaft, and a transmission shaft is rotatably fitted inside the hollow shaft. The bottom end of the transmission shaft meshes with the lead screw through a bevel gear, and the top end of the transmission shaft is connected to a second blade.

[0017] As a further improvement to this technical solution, the reciprocating frame is fixedly connected to an inner shaft, and the top of the shovel plate is fixedly connected to a sleeve. The sleeve is fitted onto the inner shaft, so that the shovel plate rotates around the inner shaft. Furthermore, a wedge is fixedly connected to the bottom of the reciprocating frame, and the wedge is used to limit the rotation of the shovel plate.

[0018] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0019] 1. In this wastewater treatment device based on water electrolysis for hydrogen production, a guiding structure consisting of a first water inlet and a water-powered actuator, and a lifting structure consisting of a lifting aid structure and a second water inlet are set up. The flow kinetic energy of the heavy metal wastewater in the inlet pipe drives the first blade to rotate. The first and second rotating shafts drive the screw to rotate, causing the reciprocating frame and shovel to move horizontally along the bottom of the treatment chamber to shovel up the sediment. At the same time, the screw drives the second blade to rotate through the transmission shaft to generate an upward water flow that lifts the sediment to the electrolysis electrode area, thus realizing the external power-free circulation lifting and directional guidance of the bottom sediment.

[0020] Compared with existing technologies that use mechanical agitation or circulating pumps that require continuous operation, this device avoids additional power consumption and eliminates the need for periodic acid washing or high-pressure rinsing to generate harmful waste cleaning liquids, thus reducing the environmental impact of the device operation and meeting the requirements of research and experimental development in environmental protection technologies.

[0021] 2. In this wastewater treatment device based on water electrolysis for hydrogen production, the shovel plate of the lifting structure is movably sleeved on the inner shaft of the reciprocating frame through a sleeve, and is limited by wedge blocks. When the reciprocating frame moves to both sides, the shovel plate deflects away from the bottom surface of the treatment chamber. When it moves towards the opposite side, the wedge blocks abut against the shovel plate, making it perpendicular to the bottom surface to push the sediment, which gathers the sediment from both sides to the middle. With the help of the rotation and lifting action of the second blade, the sediment re-enters the electrolysis reaction zone. The water that has completed electrolysis treatment is discharged from the outlet pipe through the filter. The unprecipitated solids are intercepted by the filter and settle again along the slope of the treatment chamber, which is wider at the top and narrower at the bottom, forming an adaptive circulation purification path. There is no need for the intervention of electrical components such as flow meters, electric actuators and PLC controllers. Moreover, the device's operating cycle is synchronously adaptive with the influent flow rate. Even under fluctuating influent conditions, the concentration of heavy metals in the effluent can still be kept stable and meet the standards. The overall manufacturing cost is low and the reliability of long-term operation is high. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0023] Figure 2 This is a schematic diagram of the overall cross-sectional structure of the present invention;

[0024] Figure 3 This is a schematic cross-sectional view of the structure and operation of the wastewater treatment tank and electrolyzer of the present invention.

[0025] Figure 4 This is a schematic cross-sectional view of the structure of the wastewater treatment tank and the lifting unit of the present invention.

[0026] Figure 5 This is a schematic cross-sectional view of the structure of the wastewater treatment tank and the water-powered drive of the present invention.

[0027] Figure 6This is a schematic diagram of the water-powered actuator structure of the present invention;

[0028] Figure 7 This is a schematic diagram of the second rotating shaft and the lifting structure of the present invention.

[0029] Figure 8 This is a schematic cross-sectional view of the reciprocating frame and shovel plate structure of the present invention.

[0030] Figure 9 This is a schematic diagram of the movement of the lifting structure shovel plate of the present invention;

[0031] Figure 10 This is a schematic cross-sectional view of the second water inlet device and the lifting structure of the present invention.

[0032] Figure 11 This is a schematic diagram of water flow inside the wastewater treatment tank of the present invention.

[0033] The meanings of the labels in the diagram are as follows:

[0034] 1. Wastewater treatment tank; 11. Lower tank body; 12. Upper tank cover; 13. Inlet pipe; 14. Outlet pipe; 15. Slide rail; 16. Filter;

[0035] 2. Electrolyzer;

[0036] 3. Lifting unit; 31. First water inlet; 32. Water-powered actuator; 321. Component housing; 322. Water flow chamber; 323. First blade; 324. First shaft; 325. Second shaft; 33. Lifting aid structure; 331. Lead screw; 332. Reciprocating frame; 3321. Inner shaft; 3322. Wedge; 333. Shovel plate; 3331. Sleeve; 34. Second water inlet; 341. Fender; 342. Hollow shaft; 343. Drive shaft; 344. Second blade. Detailed Implementation

[0037] The technical solutions in 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 embodiments of the present invention, and not all embodiments. Based on the 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.

[0038] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0039] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0040] Please see Figure 1 , Figure 2 , Figure 3 , Figure 4 As shown, this embodiment provides a wastewater treatment device based on hydrogen production through water electrolysis, including a wastewater treatment tank 1 and an electrolyzer 2. The wastewater treatment tank 1 includes a lower tank 11 and an upper tank cover 12 covering the top of the lower tank 11 (when there is a lot of sediment in the treatment chamber, the lower tank 11 can be cleaned by removing the upper tank cover 12). The electrolyzer 2 is fixedly installed on the upper tank cover 12, and its bottom electrolysis electrode is located in the treatment chamber of the lower tank 11. The bottom of the upper tank cover 12 is also provided with a gas collecting pipe (not shown in the figure) for collecting gas. The left and right sides of the lower tank 11 are connected to a water inlet pipe 13 and a water outlet pipe 14. The water inlet pipe 13 is used to introduce the heavy metal wastewater to be treated into the treatment chamber, and the wastewater is discharged through the water outlet pipe 14 after electrolysis treatment.

[0041] The wastewater treatment device also includes a hoisting unit 3, which includes a guiding structure and a hoisting structure. The guiding structure is used to guide the wastewater flowing into the inlet pipe 13 to the electrolysis electrode. At the same time, the water flow in the inlet pipe 13 drives the hoisting structure to lift the sediment that has settled to the bottom of the treatment chamber to the top of the treatment chamber, forming a continuous water circulation flow, realizing the repeated purification process of wastewater, thereby achieving the treatment of heavy metal wastewater and ensuring environmental protection.

[0042] In this embodiment, the improvement of the device is specifically that the guiding structure of the lifting unit 3 guides the heavy metal wastewater introduced by the inlet pipe 13 to the top of the treatment chamber and into contact with the electrolytic electrode. The heavy metal ions in the wastewater generate heavy metal hydroxide precipitates under the action of electrolytic hydrogen production and settle from top to bottom. The guiding structure uses the water flow in the inlet pipe 13 to drive the lifting structure to lift the solid heavy metal precipitates accumulated at the bottom to the electrolytic electrode area. The precipitates dissociate and release heavy metal ions under the disturbance of the electric field and water body. After being purified by electrolytic reduction again, the deep removal of heavy metals is achieved. Through the above-mentioned continuous cycle process, the purification efficiency of wastewater is improved.

[0043] The above structure is disclosed below:

[0044] like Figure 3 , Figure 4 As shown, the treatment chamber is shaped like a wide top and narrow bottom. The inlet pipe 13 connects to the narrow lower section of the treatment chamber, while the outlet pipe 14, located above the inlet pipe 13, connects to the wide upper section. Heavy metal wastewater introduced through the inlet pipe 13 is processed by the electrolyzer 2 to produce heavy metal hydroxide precipitates and gaseous products via water electrolysis. The gaseous products are collected and discharged through a gas collection pipe on the upper cover 12. The heavy metal hydroxide precipitates move from top to bottom or along the slope transitioning from the wide upper section to the narrow lower section, accumulating on the bottom plane of the treatment chamber. Furthermore, a filter 16 is installed at the connection between the treatment chamber and the outlet pipe 14. The filter 16 filters out sediment in the water. Through the filter 16, the water treated by water electrolysis passes through the filter 16 and is then discharged through the outlet pipe 14. Sediment in the water is intercepted by the filter 16 and either sinks or settles along the slope to the bottom plane of the treatment chamber.

[0045] like Figure 4 As shown, the improvement of the present invention is that the guiding structure includes a first water inlet 31 and a water-powered actuator 32 disposed at the connection between the treatment chamber and the inlet pipe 13. The first water inlet 31 is used to guide the wastewater entering through the inlet pipe 13 to flow to the electrolysis electrode. The water-powered actuator 32 uses the water flow in the inlet pipe 13 to drive the lifting structure to lift the sediment that has settled to the bottom of the treatment chamber.

[0046] One embodiment of the present invention is that the first water inlet 31 is configured as a "J"-shaped structure installed in the treatment chamber, with one end connected to the water inlet pipe 13 and the outlet of the other end facing the electrolysis electrode area of ​​the electrolyzer 2, thereby guiding the wastewater introduced by the water inlet pipe 13 to the electrolysis area.

[0047] In this invention, the structure of the water-powered actuator 32 can be selected as follows: Figure 5 , Figure 6The structure shown includes a component shell 321 with an overall "convex" shape, symmetrically arranged at the left and right ends of the lower housing 11. A water flow cavity 322 is opened on the upper part of the shell and penetrates the surface. The water flow cavity 322 is located at the connection between the treatment chamber and the water inlet pipe 13 and is connected to the water inlet pipe 13. A first blade 323 is rotatably fitted inside the water flow cavity 322. A first rotating shaft 324 and two second rotating shafts 325 are rotatably connected to the bottom of the component shell 321. The shaft of the first blade 323 is connected to the first rotating shaft 324 below via a first belt or other means. The first rotating shaft 324 is then connected to the second rotating shafts 325 distributed on its left and right sides via a second belt or other means. The second rotating shafts 325 are connected to the lifting structure. When wastewater is introduced into the treatment chamber through the inlet pipe 13, the water flow drives the first blade 323 to rotate, and then through the first rotating shaft 324 which is connected to the shaft of the first blade 323, the second rotating shaft 325 drives the lifting structure to lift the sediment that has settled to the bottom of the treatment chamber.

[0048] The following details the supporting structure:

[0049] like Figure 4 As shown, the lifting structure includes a lifting structure 33 connected to the second rotating shaft 325 and a second water inlet 34 disposed on both sides of the first water inlet 31. The second rotating shaft 325 drives the lifting structure 33 to make horizontal reciprocating motion along the bottom plane of the treatment chamber to lift the sediment accumulated on the bottom plane of the treatment chamber. At the same time, the lifting structure 33 drives the second water inlet 34 to move the lifted sediment upward to the electrolysis area.

[0050] Specifically, such as Figure 3 , Figure 7 As shown, a horizontal slide rail 15 is provided on the inner side of the processing chamber. The lifting structure 33 includes a lead screw 331 and a reciprocating frame 332 that is driven by the lead screw 331. Both ends of the lead screw 331 are coaxially connected to one end of two second rotating shafts 325. The left and right side walls of the reciprocating frame 332 are slidably engaged with the slide rail 15. The reciprocating frame 332 is connected to a shovel plate 333 whose bottom contacts the bottom plane of the processing chamber. The second rotating shafts 325 drive the lead screw 331 to rotate, thereby causing the reciprocating frame 332, which is driven by the lead screw 331, to move horizontally back and forth along the slide rail 15. During the movement, the shovel plate 333 scoops up the sediment accumulated on the bottom plane of the processing chamber, causing it to detach from the bottom plane of the processing chamber.

[0051] After the precipitate is scooped up, in order to guide the precipitate upwards to the electrolysis area for repeated electrolysis to produce hydrogen, such as... Figure 10As shown. The second water inlet 34 includes fenders 341 mounted on both sides of the first water inlet 31 and a hollow shaft 342 fixedly connected to the middle of the fenders 341. The fenders 341 guide the water flow through their shape. A lead screw 331 passes through the bottom of the hollow shaft 342. A drive shaft 343 is rotatably fitted inside the hollow shaft 342. The bottom end of the drive shaft 343 meshes with the lead screw 331 through a bevel gear. The top end of the drive shaft 343 is connected to a second blade 344. When the lead screw 331 rotates, it drives the drive shaft 343 meshing with it, which in turn drives the second blade 344 to rotate, causing an upward water flow to form in the middle of the treatment chamber, thereby moving the scooped-up sediment upward to the electrolysis area.

[0052] Combination Figure 11 As shown, the basic operating principle of the device in this embodiment is as follows:

[0053] The inlet pipe 13 introduces the heavy metal wastewater to be treated into the treatment chamber of the wastewater treatment tank 1, as shown by arrow c. The wastewater is guided upwards by the first water inlet device 31 towards the electrolysis electrode area of ​​the electrolyzer 2. Heavy metal ions in the wastewater precipitate as hydrogen is produced through electrolysis and then settle downwards. Simultaneously, the water flow in the inlet pipe 13 drives the first blade 323 of the water-powered actuator 32 to rotate. This rotation, via the first shaft 324 and the second shaft 325, drives the lead screw 331 of the lifting structure 33 to rotate, causing the reciprocating frame 332 and the shovel plate 333 to reciprocate horizontally along the bottom of the treatment chamber, scooping up the bottom sediment. As the lead screw 331 rotates, it drives the second blade 344 to rotate via the transmission shaft 343, generating an upward water flow that lifts the scooped-up sediment to the electrolysis electrode area, as shown by arrow f, for repeated purification. The water that has undergone electrolysis treatment then passes through the filter 16 in the direction shown by arrow d and is discharged through the outlet pipe 14. Under the influence of gravity, the sediment sinks again along the inner wall and slope of the treatment chamber, as shown by arrow e, forming a continuous self-circulating treatment process.

[0054] Through the above structure and working principle, this device ingeniously utilizes the kinetic energy of the inlet water to drive the lifting unit 3, realizing the powerless circulation lifting and directional guidance of the bottom sediment. This allows heavy metal wastewater to be repeatedly electrolyzed and purified without external power, effectively avoiding the additional energy consumption, dynamic seal leakage pollution, and equipment maintenance problems caused by traditional mechanical stirring and circulating pumps. This ensures that the device can operate stably and with low energy consumption for a long time, providing reliable low-carbon treatment equipment for heavy metal wastewater for research and experimental development in environmental protection technologies.

[0055] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A wastewater treatment device based on hydrogen production by water electrolysis, comprising a wastewater treatment tank (1) and an electrolyzer (2), wherein the wastewater treatment tank (1) comprises a lower tank body (11) and an upper tank cover (12) covering the top of the lower tank body (11), the electrolyzer (2) is fixedly mounted on the upper tank cover (12), and its bottom electrolysis electrode is located in the treatment chamber of the lower tank body (11), and the bottom of the upper tank cover (12) is also provided with a gas collecting pipe for collecting gas, and the left and right sides of the lower tank body (11) are connected to an inlet pipe (13) and an outlet pipe (14), wherein the inlet pipe (13) is used to introduce heavy metal wastewater into the treatment chamber, and the wastewater is discharged through the outlet pipe (14) after electrolysis treatment, characterized in that: It also includes a lifting unit (3), which includes a guide structure and a lifting structure; The guiding structure includes a first water inlet (31) and a water-powered actuator (32). The first water inlet (31) is used to guide the wastewater flowing through the inlet pipe (13) to the electrolysis electrode area. The water-powered actuator (32) is located at the connection between the treatment chamber and the inlet pipe (13) and includes a first blade (323) driven by the water flow in the inlet pipe (13). The first blade (323) is connected to the lifting structure through a transmission assembly so as to use the water flow in the inlet pipe (13) to drive the lifting structure to lift the sediment settled at the bottom of the treatment chamber to the top of the treatment chamber, forming a continuous water circulation flow.

2. The wastewater treatment device based on hydrogen production via water electrolysis according to claim 1, characterized in that: The treatment chamber is generally wider at the top and narrower at the bottom. The water inlet pipe (13) is connected to the narrow area at the bottom of the treatment chamber, and the water outlet pipe (14) is located above the water inlet pipe (13) and is connected to the wide area at the top of the treatment chamber.

3. The wastewater treatment device based on hydrogen production via water electrolysis according to claim 2, characterized in that: The lower narrow section of the treatment chamber has at least one side wall that is an inclined slope. This slope gradually narrows downward from the upper wide section of the treatment chamber, and is used to guide the sediment to the bottom plane of the treatment chamber.

4. The wastewater treatment device based on hydrogen production via water electrolysis according to claim 2, characterized in that: A filter (16) is provided at the connection between the treatment chamber and the outlet pipe (14), and the filter (16) is used to filter out sediment in the water.

5. The wastewater treatment device based on hydrogen production via water electrolysis according to claim 2, characterized in that: The first water inlet (31) is configured as a "J"-shaped structure installed in the treatment chamber, with one end connected to the water inlet pipe (13) and the outlet of the other end facing the electrolysis electrode area of ​​the electrolyzer (2).

6. The wastewater treatment device based on hydrogen production via water electrolysis according to claim 5, characterized in that: The water-powered actuator (32) includes a component housing (321) with an overall "convex" shaped structure symmetrically arranged at the left and right ends of the lower housing (11). A water flow cavity (322) is opened on the upper part of the housing and is connected to the water inlet pipe (13). The first blade (323) is rotatably fitted in the water flow cavity (322). The bottom of the component housing (321) is rotatably connected to a first rotating shaft (324) and two second rotating shafts (325). The shaft of the first blade (323) is drivenly connected to the first rotating shaft (324). The first rotating shaft (324) is drivenly connected to the second rotating shafts (325). The second rotating shafts (325) are connected to the lifting structure. The first blade (323), the first rotating shaft (324) and the second rotating shafts (325) together constitute the transmission component.

7. The wastewater treatment device based on hydrogen production via water electrolysis according to claim 6, characterized in that: The lifting structure includes a lifting aid structure (33) connected to the second rotating shaft (325) and a second water inlet (34) disposed on both sides of the first water inlet (31). The second rotating shaft (325) drives the lifting aid structure (33) to make horizontal reciprocating motion along the bottom plane of the treatment chamber to lift the sediment accumulated to the bottom plane of the treatment chamber. At the same time, the lifting aid structure (33) drives the second water inlet (34) to move the lifted sediment upward to the electrolysis area.

8. The wastewater treatment device based on hydrogen production via water electrolysis according to claim 7, characterized in that: The inner side of the processing chamber is provided with a horizontal slide rail (15). The lifting structure (33) includes a lead screw (331) and a reciprocating frame (332) that is driven by the lead screw (331). The two ends of the lead screw (331) are coaxially connected to one end of two second rotating shafts (325). The left and right side walls of the reciprocating frame (332) are slidably engaged with the slide rail (15). The reciprocating frame (332) is connected with a shovel plate (333) whose bottom contacts the bottom plane of the processing chamber.

9. The wastewater treatment device based on hydrogen production via water electrolysis according to claim 8, characterized in that: The second water inlet (34) includes fenders (341) installed on both sides of the first water inlet (31) and a hollow shaft (342) fixedly connected to the middle of the fenders (341). The lead screw (331) passes through the bottom of the hollow shaft (342). A drive shaft (343) is rotatably fitted inside the hollow shaft (342). The bottom end of the drive shaft (343) meshes with the lead screw (331) through a bevel gear. The top end of the drive shaft (343) is connected to a second blade (344).

10. The wastewater treatment device based on hydrogen production via water electrolysis according to claim 9, characterized in that: The reciprocating frame (332) is fixedly connected to an inner shaft (3321), and a sleeve (3331) is fixedly connected to the top of the shovel plate (333). The sleeve (3331) is sleeved on the inner shaft (3321), so that the shovel plate (333) rotates around the inner shaft (3321). A wedge (3322) is also fixedly connected to the bottom of the reciprocating frame (332), and the wedge (3322) is used to limit the rotation of the shovel plate (333).

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