Continuous cross-flow double-tank electro-fenton reactor

Abstract

This invention belongs to the field of wastewater treatment technology and discloses a continuous cross-flow double-tank electro-Fenton reactor, including a Fenton oxidation reaction tank. The bottom of the Fenton oxidation reaction tank is fixedly connected to an electrochemical reaction tank via a circulation pump. The upper sides of the Fenton oxidation reaction tank and the electrochemical reaction tank are connected by a pipe. By setting up an arc plate, turbulence holes, a first axial flow impeller, a second axial flow impeller, and a radial flow impeller, the combined action of the impellers in different stirring directions promotes the circulation and stirring of the liquid in the tank. The arc plate, which rotates with the double-layer turntable, continuously stirs the liquid. After the liquid enters the concave surface of the arc plate, it passes through the turbulence holes and is discharged. The liquid becomes turbulent after passing through the small holes, thereby promoting the full mixing of the reagent and wastewater in this area. Combined with the circulation and stirring action, the turbulence of the liquid flow is increased. Furthermore, when the arc plate approaches the baffle, the pins are inserted into the turbulence holes to clear the blockage and effectively prevent the channels from becoming blocked.

Description

Technical Field

[0001] This invention belongs to the field of wastewater treatment technology, specifically a continuous cross-flow dual-tank electric Fenton reactor. Background Technology

[0002] The Fenton reaction involves the reaction of ferrous ions with hydrogen peroxide to produce highly oxidizing hydroxyl radicals, which can effectively degrade organic pollutants in water. Therefore, recalcitrant organic wastewater from industries such as pharmaceuticals, printing and dyeing, and chemicals can be degraded using a dual-tank electro-Fenton reactor. This reactor mainly consists of an electrochemical reaction tank and a Fenton oxidation reaction tank, breaking through the bottleneck of static mass transfer in traditional electro-Fenton reactors. The dual-tank combination completely isolates the electrochemical reaction and the Fenton oxidation reaction through physical means, providing optimal reaction conditions for different reactions. At the same time, hydrogen peroxide no longer comes into contact with the anode, avoiding ineffective consumption due to the decomposition of hydrogen peroxide at the anode and improving the utilization rate of hydrogen peroxide.

[0003] A novel Fenton reactor, disclosed in prior art document CN114180686A, provides a method for improving wastewater treatment by using convection to ensure thorough mixing of the mixed liquor within a reasonable area. The device includes a reaction chamber with a graphite rod at the bottom and a graphite felt on the inner wall. The graphite rod is connected to the positive terminal of a power supply, and the inner wall is connected to the negative terminal. The upper side wall of the reaction chamber has a reactor outlet and a second circulation outlet, while the lower side wall has a reactor inlet and an air outlet. The reactor inlet is connected to a wastewater inlet pipe, and the reactor inlet outlet is connected to a water cap distributor located at the bottom of the reaction chamber. This device introduces an electric field within the Fenton reaction system, improving hydrogen peroxide utilization, reducing ferrous iron dosage, and decreasing sludge production. Although the above-mentioned device adds an electric field inside the Fenton reaction system to improve the utilization rate of hydrogen peroxide, when the wastewater and the reagent are mixed and reacted, although the liquid in most areas can be mixed uniformly, dead zones may form at the edge of the reaction tank, causing unreacted wastewater to flow out directly, resulting in short-circuiting and affecting the overall mixing uniformity and reaction efficiency. Summary of the Invention

[0004] The purpose of this invention is to provide a continuous cross-flow dual-tank electro-Fenton reactor that increases the turbulence of liquid flow and fills the gaps in the mixing dead zone, in order to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a continuous cross-flow dual-tank electro-Fenton reactor, comprising a Fenton oxidation reaction tank, wherein the bottom of the Fenton oxidation reaction tank is fixedly connected to an electrochemical reaction tank via a circulation pump, and the upper sides of the Fenton oxidation reaction tank and the electrochemical reaction tank are connected by a pipe, wherein a wastewater inlet is provided at the top of the Fenton oxidation reaction tank, and a qualified water discharge outlet is provided on the upper side wall of the Fenton oxidation reaction tank, further comprising: A perturbation mixing mechanism is located on the Fenton oxidation reactor; A short-circuit protection mechanism, which is connected to a disturbance mixing mechanism; The disturbance mixing mechanism includes a drive motor fixed to the top of the Fenton oxidation reaction vessel. A stirring rod is fixed to the output end of the drive motor, and the outer wall of the stirring rod rotates through the top of the Fenton oxidation reaction vessel. Several double-layer turntables are fixed at equal intervals on the lower middle side of the stirring rod.

[0006] Preferably, the disturbance mixing mechanism further includes a first axial flow impeller fixed to the upper end of the stirring rod, a second axial flow impeller fixed to the lower end of the stirring rod, a radial flow impeller fixed to the middle of the stirring rod, a plurality of double-layer turntables and radial flow impellers being distributed at intervals, and an atomizing nozzle being fixedly inserted through one side of the top of the Fenton oxidation reaction vessel.

[0007] Preferably, a pair of arc-shaped plates are fixed to both sides of the double-layer turntable, and a few interference flow holes are opened in the middle of the arc-shaped plates. Sliding grooves are opened on both sides of the double-layer turntable, and vertical rods are slidably connected to the inner walls of the sliding grooves.

[0008] Preferably, several fixed rods slide through both sides of the vertical rod, and the ends of the fixed rods are all fixed to the edge of the arc-shaped plate.

[0009] Preferably, a number of rows of nails are evenly fixed to both sides of the vertical rod, and the number and position of the rows of nails are consistent with the turbulence holes.

[0010] Preferably, the anti-short-flow mechanism includes rotating rods rotatably connected to both sides of the double-layer turntable, and the pair of rotating rods are centrally symmetrically distributed with the stirring rod as the axis.

[0011] Preferably, protective shells are fixed to both sides of the middle of the double-layer turntable, and a horizontal plate is fixed to one end of each rotating rod. The horizontal plate and the protective shell are elastically connected to each other. A scraper is fixed to the other end of the rotating rod, and the edge of the scraper abuts against the inner cavity of the Fenton oxidation reaction vessel.

[0012] Preferably, a baffle is fixedly connected to the inner edge of the Fenton oxidation reactor, and a number of protrusions are fixedly connected at equal intervals to the outer side of the baffle. The outer walls of the protrusions are slidably connected to the inner side of the double-layer turntable. A pair of arc-shaped blocks are provided on both sides of the protrusions. The ends of the arc-shaped blocks are fixedly connected to the baffle, and the inner side of each pair of arc-shaped blocks slidably abuts against the outer wall of the double-layer turntable.

[0013] Preferably, the movement trajectory of the protrusion coincides with that of the horizontal plate, the movement trajectory of the arc-shaped stop block coincides with that of the vertical rod, and the horizontal plate and the vertical rod abut against each other.

[0014] Preferably, a conductive module is installed on the top of the electrochemical reaction vessel, an electrode module is fixedly connected below the conductive module, and a water distribution module is provided at the lower end of the electrode module.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows: This invention utilizes a combination of structures including an arc-shaped plate, turbulence holes, a first axial flow impeller, a second axial flow impeller, and a radial flow impeller. The combined action of these impellers in different stirring directions promotes the circulation and stirring of the liquid within the tank. The arc-shaped plate, rotating with the double-layer turntable, continuously agitates the liquid. After entering the concave surface of the arc-shaped plate, the liquid passes through the turbulence holes and exits. The liquid becomes turbulent after passing through the small holes, thus promoting thorough mixing of the reagent and wastewater in this area. Combined with the circulating stirring action, this increases the turbulence of the liquid flow, further promoting thorough and uniform mixing of the reagent and wastewater, ensuring the efficient conduct of the Fenton reaction. Furthermore, when the arc-shaped plate approaches the baffle plate, the arc-shaped baffle blocks press against the vertical rod, causing several rows of pins to insert into the turbulence holes to clear blockages, effectively preventing clogging.

[0016] This invention, through the combination of structures such as a horizontal plate, a protrusion, and a double-layer turntable, facilitates the automatic bypassing of the scraper around the baffle without affecting the continuous rotation of the double-layer turntable. Whenever the arc-shaped plate moves to the position of the baffle, it simultaneously drives the rotating rod and the horizontal plate to approach the protrusion. The protrusion, by squeezing the horizontal plate, causes the rotating rod to rotate, thereby drawing the scraper into the double-layer turntable and making it fit tightly. Under the action of inertia, the rotating rod and the scraper pass through the baffle area, ensuring the stable operation of the device.

[0017] This invention, through the combination of scraper and horizontal plate structures, facilitates the coverage of areas not reached by the combined paddle, avoiding dead zones that may form at the edge of the Fenton oxidation reactor, and preventing unreacted wastewater from flowing out directly and causing short-circuiting. When the scraper retracts and passes through the baffle area, the horizontal plate will return to its original position due to the return force of the tension spring, and at the same time push the vertical rod back to its original position, so that the edge of the scraper re-contacts the inner cavity of the Fenton oxidation reactor and scrapes, thereby improving the reaction efficiency. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a top view of the structure of the present invention; Figure 3 This is a three-dimensional structural schematic diagram of the Fenton oxidation reaction vessel of the present invention; Figure 4 This is a side sectional view of the Fenton oxidation reactor of the present invention; Figure 5 This is a schematic diagram showing the structural fit between the stirring rod and the double-layer turntable of the present invention; Figure 6 This is a schematic diagram showing the structural fit between the first axial flow impeller and the stirring rod of the present invention; Figure 7 This is a schematic diagram showing the structural fit between the double-layer turntable and the arc plate of the present invention; Figure 8 This is a schematic diagram showing the structural fit between the vertical rod and the fixed rod of the present invention; Figure 9 This is a schematic diagram showing the structural fit between the double-layer turntable and the vertical rod of the present invention; Figure 10 For the present invention Figure 9 A magnified view of the structure at point A in the middle; Figure 11 This is a schematic diagram showing the structural fit between the rotating rod and the cross plate of the present invention.

[0019] In the picture: 100. Fenton oxidation reactor; 200. Electrochemical reactor; 300. Electrode module; 400. Conductive module; 500. Water distribution module; 600. Wastewater inlet; 700. Standard water outlet; 800. Disturbance mixing mechanism; 810. Drive motor; 820. Stirring rod; 830. Atomizing nozzle; 840. First axial flow propeller; 850. Radial flow propeller; 860. Second axial flow propeller; 870. Double-layer turntable; 880. Vertical rod; 890. Arc plate; 8100. Turbulence hole; 8110. Fixing rod; 8120. Pin array; 8130. Slide groove; 900. Anti-short-flow mechanism; 910. Baffle; 920. Arc stop block; 930. Rotating rod; 940. Scraper; 950. Protrusion; 960. Horizontal plate; 970. Protective shell. Detailed Implementation

[0020] 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 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.

[0021] like Figures 1 to 11As shown, this invention provides a continuous cross-flow dual-tank electro-Fenton reactor, including a Fenton oxidation reaction tank 100. The bottom of the Fenton oxidation reaction tank 100 is fixedly connected to an electrochemical reaction tank 200 via a circulation pump. The upper sides of the Fenton oxidation reaction tank 100 and the electrochemical reaction tank 200 are connected by a pipe. A wastewater inlet 600 is provided at the top of the Fenton oxidation reaction tank 100, and a qualified water outlet 700 is provided on the upper side wall of the Fenton oxidation reaction tank 100. The reactor also includes: A disturbance mixing mechanism 800 is located on the Fenton oxidation reactor 100; Short-circuit protection mechanism 900, which is connected to disturbance mixing mechanism 800; The disturbance mixing mechanism 800 includes a drive motor 810 fixed to the top of the Fenton oxidation reaction vessel 100. A stirring rod 820 is fixed to the output end of the drive motor 810, and the outer wall of the stirring rod 820 rotates through the top of the Fenton oxidation reaction vessel 100. Several double-layer turntables 870 are fixed at equal intervals on the lower middle side of the stirring rod 820. A conductive module 400 is installed on the top of the electrochemical reaction vessel 200. An electrode module 300 is fixed below the conductive module 400. A water distribution module 500 is provided at the lower end of the electrode module 300.

[0022] The above-mentioned scheme employs the following structure: the conductive module 400 mainly consists of a dual-function motor, cathode terminals, anode collector rings, wires, and columnar integrated insulating latches. The electrode module 300 mainly consists of a central columnar anode and an annular mesh cathode. The water distribution module 500 mainly consists of an annular split insulating latch and an umbrella-shaped water distributor, wherein the umbrella-shaped water distributor is externally connected to a circulating pump to achieve uniform water distribution and cross-flow flushing. The annular split insulating latch has one end directly fixed to the base plate, and the other end is fastened to the annular cathode via a latch. The two ends of the insulating latch can rotate and swing within a certain range, exhibiting good elasticity. The cathode is fastened to the insulating latch. The cathode has an annular mesh structure, preferably made of corrosion-resistant high-strength stainless steel, with a surface coated with a "hydrophilic SiO2 and hydrophobic PTFE composite coating." The effective reaction area is completely immersed in water. Four columnar integrated insulating latches are fastened to the top of the cathode, one of which internally encapsulates the conductive components of the cathode. At the center of the annular cathode is a columnar anode, preferably made of titanium, coated with an active coating of precious metal oxides such as ruthenium and iridium. The effective reaction area is completely submerged in water, with the bottom of the anode suspended above the umbrella-shaped water distributor. A columnar integrated insulating latch is attached to the top, containing the conductive components of the anode. Both the upper and lower insulating latches prevent the cathode and anode currents from being conducted to the tank body. The dual-function motor is a variable frequency motor capable of both vibration and rotation, used to achieve high-frequency, small-amplitude vibration of the cathode and synchronous low-frequency rotation of the cathode and anode. A triangular overflow weir and a collection channel are located at the top of the tank. Wastewater flows upwards from the bottom; some water passes through the cathode and diffuses outwards before moving upwards, while some flows through the cathode and then outwards through the gaps between the four columnar integrated insulating latches at the top of the mesh. Finally, all water overflows evenly from above the triangular overflow weir into the collection channel, and then flows out through the outlet within the channel. The dimensions of the tank, the size and spacing of the cathode and anode, the mesh size of the cathode, the applied voltage and current, the frequency and amplitude of vibration, the rotation speed, the circulating water volume between the two tanks, and the dosage of hydrogen peroxide and ferrous sulfate, etc., will all be determined through theoretical calculations and small-scale experiments based on the characteristics of the wastewater being treated.

[0023] like Figures 4 to 10As shown, the disturbance mixing mechanism 800 also includes a first axial flow impeller 840 fixed to the upper end of the stirring rod 820, a second axial flow impeller 860 fixed to the lower end of the stirring rod 820, a radial flow impeller 850 fixed to the middle of the stirring rod 820, and multiple double-layer turntables 870 and radial flow impellers 850 distributed at intervals. An atomizing nozzle 830 is fixedly inserted through one side of the top of the Fenton oxidation reaction vessel 100. A pair of arc-shaped plates 890 are fixed to both sides of the double-layer turntables 870. The middle part of the plate 870 is provided with several disturbance flow holes 8100. The two sides of the double-layer turntable 870 are provided with sliding grooves 8130. The inner wall of the sliding grooves 8130 is slidably connected with vertical rods 880. Several fixed rods 8110 are slidably passed through both sides of the vertical rods 880. The ends of the fixed rods 8110 are fixed to the edge of the arc plate 890. Several rows of nails 8120 are evenly fixed to both sides of the vertical rods 880. The number and position of the rows of nails 8120 are consistent with the disturbance flow holes 8100.

[0024] The above scheme employs a system where the atomizing nozzle 830 is connected to a hydrogen peroxide dosing device for continuous hydrogen peroxide dosing, atomizing it into droplets. During operation, wastewater enters the Fenton oxidation reactor 100 through the wastewater inlet 600. The reactant is added uniformly through the atomizing nozzle 830, and the drive motor 810 is simultaneously activated. As the stirring rod 820 rotates, the first axial flow impeller 840, the second axial flow impeller 860, and the radial flow impeller 850 rotate synchronously, thoroughly agitating the liquid. Under the agitation, the liquid inside the Fenton oxidation reactor 100 experiences axial flow through the first and second axial flow impellers 840 and 860 on the upper and lower sides, while the radial flow impeller 850 in the middle promotes radial mixing and circulation. This combined impeller agitation ensures uniform mixing of the liquid within the reactor, improving oxidation reaction efficiency. During the agitation process, the rotation of the stirring rod 820 also synchronously drives the double-layer turntable 870 to rotate, further enhancing the liquid mixing effect. Two pairs of arc-shaped plates 890 on either side of the double-layer turntable 870 continuously agitate the liquid. The liquid enters the concave surface of the arc-shaped plates 890, passes through the turbulence holes 8100, and is discharged. The liquid becomes turbulent after passing through the small holes, thus promoting thorough mixing of the reagents and wastewater in this area. Under the action of circulating agitation, the efficient Fenton reaction is ensured. Furthermore, whenever the arc-shaped plates 890 approach the baffle plate 910, the arc-shaped stop block 920 presses against the vertical rod 880, causing the vertical rod 880 to move along the guide rod 8110. The movement of the vertical rod 880 drives several rows of pins 8120 to insert into the turbulence holes 8100, effectively preventing blockage and ensuring the smooth operation of the reaction system.

[0025] like Figures 5 to 7 , Figure 11As shown, the anti-short-flow mechanism 900 includes rotating rods 930 rotatably connected to both sides of the double-layer turntable 870, and the pair of rotating rods 930 are centrally symmetrically distributed about the stirring rod 820 as the axis; protective shells 970 are fixedly connected to both sides of the middle part of the double-layer turntable 870, and a horizontal plate 960 is fixedly connected to one end of each rotating rod 930. The horizontal plate 960 and the protective shell 970 are elastically connected to each other, and a scraper 940 is fixedly connected to the other end of the rotating rod 930. The edge of the scraper 940 abuts against the inner cavity of the Fenton oxidation reactor 100; a flow deflector is fixedly connected to the edge of the inner cavity of the Fenton oxidation reactor 100. The outer side of the baffle 910 is fixedly connected with several protrusions 950 at equal intervals. The outer walls of the protrusions 950 are slidably connected to the inner side of the double-layer turntable 870. A pair of arc-shaped blocks 920 are provided on both sides of the protrusions 950. The ends of the arc-shaped blocks 920 are fixed to the baffle 910. The inner side of each pair of arc-shaped blocks 920 slides against the outer wall of the double-layer turntable 870. The movement trajectory of the protrusions 950 coincides with that of the horizontal plate 960, and the movement trajectory of the arc-shaped blocks 920 coincides with that of the vertical rod 880. The horizontal plate 960 and the vertical rod 880 abut against each other.

[0026] The above solution is adopted: Both sides of the double-layer turntable 870 are chamfered to allow the scraper 940 to gather space, with the gathering direction as follows... Figure 7 As indicated by the arrow, the outer side of the baffle 910 is the reaction zone inside the tank, and the inner side is the effluent zone. The baffle guides the wastewater, creating turbulent mixing and preventing unmixed dead zones that could cause short-circuiting. The compliant water outlet 700 and the inlet pipe of the circulating pump are both connected to the effluent zone inside the tank. The external circulating pump transports wastewater from the Fenton oxidation reactor 100 to the electrochemical reactor 200, providing forced circulation and enhancing convection. After treatment by the oxidation reaction, the wastewater meets the standards and is continuously discharged by gravity from the compliant water outlet 700. A circulating water inlet is located on the outer wall of the upper part of the reaction zone inside the tank. This inlet is connected to the outlet in the collection channel of the electrochemical reactor 200 via a connecting pipe between the two tanks. This inlet receives the effluent from the electrochemical reactor 200. A ferrous sulfate dosing port is also provided on the connecting pipe, connected to a ferrous sulfate dosing device for continuous, small-volume dosing of ferrous sulfate to replenish the iron lost during continuous operation due to the discharge of compliant wastewater. The entire reactor is equipped with monitoring instruments for pH, ORP, conductivity, pressure, flow rate, and temperature, as well as automatic valves, and its control system achieves highly automated operation control. Based on a PLC, the control system can also incorporate an artificial intelligence module. Through intelligent means such as data analysis, autonomous learning, and model invocation, it further optimizes the operating status and improves the overall operating efficiency and stability of the reactor. The coordinated action of the arc-shaped plate 890 and the baffle 910 optimizes mixing. Whenever the arc-shaped plate 890 moves to the position of the baffle 910, it simultaneously drives the rotating rod 930 and the horizontal plate 960 closer to the protrusion 950. The protrusion 950, by pressing against the horizontal plate 960, causes the rotating rod 930 to rotate, thereby drawing the scraper 940 into the double-layer turntable 870 and making it adhere tightly to the turntable. At this time, the tension spring is stretched until the horizontal plate 960 slips off the protrusion 950, and the rotating rod 930 and scraper 940 pass through the area of ​​the baffle 910. With the return force of the tension spring, the horizontal plate 960 returns to its original position, simultaneously pushing the vertical rod 880 back to its original position, causing the edge of the scraper 940 to re-contact and scrape the inner cavity of the Fenton oxidation reactor 100. The scraper 940 effectively reduces the occurrence of dead zones at the edges of the mixing tank, improves mixing uniformity, and ensures the efficient operation of the entire reaction process.

[0027] Working principle and usage process of this invention: First, wastewater enters the Fenton oxidation reactor 100 through the wastewater inlet 600. Reactant is added through the atomizing nozzle 830, and the drive motor 810 is activated to rotate the stirring rod 820. Then, the first axial flow impeller 840, the second axial flow impeller 860, and the radial flow impeller 850 on the stirring rod 820 are simultaneously rotated. The liquid inside the Fenton oxidation reactor 100 is agitated on both the upper and lower sides by the first axial flow impeller 840 and the second axial flow impeller 860, causing axial flow. This, combined with the radial flow impeller 850 in the middle, causes radial mixing, resulting in continuous vertical circulation and agitation of the liquid within the reactor. Secondly, during the rotation of the stirring rod 820, the double-layer turntable 870 is also rotated simultaneously. Therefore, the two pairs of arc-shaped plates 890 located on both sides of the double-layer turntable 870 are continuously agitated in the liquid. The liquid enters from the concave surface of the arc-shaped plate 890, passes through the turbulence hole 8100, and then exits. Based on the characteristic that the liquid becomes turbulent after passing through the small hole, this promotes thorough mixing of the reagent and wastewater in the liquid. Furthermore, whenever the arc-shaped plate 890 moves to the position of the baffle 910, the arc-shaped stop block 920 presses against the vertical rod 880, causing the vertical rod 880 to move along the guide rod 8110, and simultaneously inserting several rows of nails 8120 into the turbulence hole 8100 to clear blockages. Finally, whenever the arc-shaped plate 890 moves to the vicinity of the baffle 910, the rotating rod 930 and the horizontal plate 960 can be simultaneously moved closer to the protrusion 950. The protrusion 950 presses against the horizontal plate 960, causing the rotating rod 930 to rotate and retract the scraper 940 at the end into the double-layer turntable 870. At this time, the tension spring is in a stretched state until the horizontal plate 960 slips off the protrusion 950. The spring's reset is delayed. Combined with the high-speed rotation process, the scraper 940 can quickly reach the position of the protrusion 950 during the delayed reset process, allowing the rotating rod 930 and the scraper 940 to pass through the area of ​​the baffle 910. Then, under the action of the spring's return force, the horizontal plate 960 rotates back to its original position, while simultaneously pushing the vertical rod 880 to its original position. The edge of the scraper 940 once again abuts against the inner cavity of the Fenton oxidation reactor 100 and continuously scrapes, reducing the occurrence of dead zones in the stirring and improving the uniformity of stirring.

[0028] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0029] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A continuous cross-flow dual-tank electro-Fenton reactor, comprising a Fenton oxidation reaction tank (100), wherein the bottom of the Fenton oxidation reaction tank (100) is fixedly connected to an electrochemical reaction tank (200) via a circulation pump, and the upper sides of the Fenton oxidation reaction tank (100) and the electrochemical reaction tank (200) are connected by a pipe, a wastewater inlet (600) is provided at the top of the Fenton oxidation reaction tank (100), and a qualified water outlet (700) is provided on the upper side wall of the Fenton oxidation reaction tank (100), characterized in that: Also includes: A perturbation mixing mechanism (800) is located on the Fenton oxidation reactor (100); A short-circuit protection mechanism (900) is connected to a disturbance mixing mechanism (800); The disturbance mixing mechanism (800) includes a drive motor (810) fixed to the top of the Fenton oxidation reactor (100). A stirring rod (820) is fixed to the output end of the drive motor (810), and the outer wall of the stirring rod (820) rotates through the top of the Fenton oxidation reactor (100). Several double-layer turntables (870) are fixed at equal intervals on the lower middle side of the stirring rod (820). A pair of arc-shaped plates (890) are fixed to both sides of the double-layer turntables (870), and each arc-shaped plate (890) has an opening in the middle. The double-layer turntable (870) has several flow-disrupting holes (8100), and each side edge of the turntable (870) has a sliding groove (8130). The inner wall of the sliding groove (8130) is slidably connected to a vertical rod (880). Several fixed rods (8110) slide through both sides of the vertical rod (880). The ends of the fixed rods (8110) are fixed to the edge of the arc plate (890). Several rows of nails (8120) are evenly fixed to both sides of the vertical rod (880). The number and position of the rows of nails (8120) are consistent with those of the flow-disrupting holes (8100).

2. The continuous cross-flow dual-tank electro-Fenton reactor according to claim 1, characterized in that: The disturbance mixing mechanism (800) further includes a first axial flow impeller (840) fixed to the upper end of the stirring rod (820), a second axial flow impeller (860) fixed to the lower end of the stirring rod (820), a radial flow impeller (850) fixed to the middle of the stirring rod (820), a plurality of double-layer turntables (870) and radial flow impellers (850) are distributed at intervals, and an atomizing nozzle (830) is fixedly inserted through one side of the top of the Fenton oxidation reaction vessel (100).

3. The continuous cross-flow dual-tank electro-Fenton reactor according to claim 1, characterized in that: The anti-short flow mechanism (900) includes rotating rods (930) rotatably connected to both sides of the double-layer turntable (870), and the pair of rotating rods (930) are centrally symmetrically distributed with the stirring rod (820) as the axis.

4. The continuous cross-flow dual-tank electro-Fenton reactor according to claim 3, characterized in that: The double-layer turntable (870) has protective shells (970) fixed to both sides of the middle section. One end of the rotating rod (930) is fixed with a horizontal plate (960). The horizontal plate (960) and the protective shell (970) are elastically connected to each other. The other end of the rotating rod (930) is fixed with a scraper (940). The edge of the scraper (940) abuts against the inner cavity of the Fenton oxidation reaction vessel (100).

5. The continuous cross-flow dual-tank electro-Fenton reactor according to claim 4, characterized in that: The inner edge of the Fenton oxidation reactor (100) is fixed with a baffle plate (910). A number of protrusions (950) are fixed at equal intervals on the outer side of the baffle plate (910). The outer walls of the protrusions (950) are slidably connected to the inner side of the double-layer turntable (870). A pair of arc-shaped blocks (920) are provided on both sides of the protrusions (950). The ends of the arc-shaped blocks (920) are fixed to the baffle plate (910). The inner side of each pair of arc-shaped blocks (920) slides against the outer wall of the double-layer turntable (870).

6. The continuous cross-flow dual-tank electro-Fenton reactor according to claim 5, characterized in that: The movement trajectory of the protrusion (950) coincides with that of the horizontal plate (960), the movement trajectory of the arc stop (920) coincides with that of the vertical rod (880), and the horizontal plate (960) and the vertical rod (880) abut against each other.

7. The continuous cross-flow dual-tank electro-Fenton reactor according to claim 1, characterized in that: The electrochemical reaction vessel (200) is equipped with a conductive module (400) on top, and an electrode module (300) is fixedly connected below the conductive module (400). A water distribution module (500) is provided at the lower end of the electrode module (300).

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