Three-dimensional electrode reactor suitable for high-concentration organic wastewater and treatment steps

Abstract

The invention discloses a three-dimensional electrode reactor suitable for high-concentration organic wastewater, which comprises an electro-catalytic reactor provided with a stirring rod assembly, and further comprises a rotary yin-yang paddle motor plate assembly, the bottom of the stirring rod assembly is provided with a planetary gear coupling which is coupled with the rotary yin-yang paddle motor plate assembly, the stirring rod assembly is provided with a rotary circular plate, and an annular flow guide structure is arranged between the rotary circular plate and the electro-catalytic reactor; according to the three-dimensional electrode reactor in which the radial reciprocating motion of the water distribution spray head and the vertical reciprocating motion of the cathode-anode paddle type electrode plate are linked, the problems of uneven water distribution and fixed electrode action area in the traditional technology are solved by dynamically adjusting the water distribution range and the electrode action depth, and high-efficiency and low-consumption treatment of high-concentration organic wastewater is realized.

Description

Technical Field

[0001] The present invention relates to the technical field of wastewater treatment, and particularly relates to a three-dimensional electrode reactor applicable to high-concentration organic wastewater and a treatment step. Background Art

[0002] The three-dimensional electrode electrocatalysis technology forms a micro electrolytic cell by filling particle electrodes, significantly improving the wastewater treatment efficiency. However, the existing technology has the following deficiencies: insufficient water distribution uniformity: traditional fixed water distribution nozzles easily lead to uneven wastewater concentration in the edge or central area of the reactor, affecting the treatment effect. Fixed electrode action area: the electrode plates only make rotational motion and cannot cover wastewater at different depths, especially with low treatment efficiency for wastewater with stratified concentration. Limited mass transfer efficiency: particle electrodes are prone to local fouling due to static water distribution or single rotation, reducing the reaction activity. The improvement direction of the existing technology: it is necessary to coordinate dynamic water distribution with electrode movement to achieve precise matching of wastewater concentration and treatment intensity.

[0003] Therefore, the existing wastewater treatment technology field needs to be further improved. Summary of the Invention

[0004] The purpose of the present invention is to provide a three-dimensional electrode reactor applicable to high-concentration organic wastewater and a treatment step, a three-dimensional electrode reactor with the radial reciprocating motion of a water distribution nozzle and the up-and-down reciprocating motion of a yin-yang paddle type electrode plate linked. By dynamically adjusting the water distribution range and the electrode action depth, the problems of uneven water distribution and fixed electrode action area in the traditional technology are solved, realizing efficient and low-consumption treatment of high-concentration organic wastewater.

[0005] In order to achieve the above purpose, the present invention adopts the following scheme: A three-dimensional electrode reactor applicable to high-concentration organic wastewater, including an electrocatalytic reactor, a stirring rod assembly is arranged on the electrocatalytic reactor, and further includes a rotating yin-yang paddle motor plate assembly. A planetary gear coupling for coupling with the rotating yin-yang paddle motor plate assembly is arranged at the bottom of the stirring rod assembly. A rotating circular plate is arranged on the stirring rod assembly. An annular diversion structure is arranged between the rotating circular plate and the electrocatalytic reactor. A plurality of radial movable water distribution nozzle assemblies communicated with the annular diversion structure are evenly distributed around the center of the rotating circular plate on the rotating circular plate. A synchronous control component for controlling the synchronous opening and closing activities of the plurality of radial movable water distribution nozzle assemblies is arranged on the stirring rod assembly. A lifting linkage component is arranged between the synchronous control component and the rotating yin-yang paddle motor plate assembly.

[0006] Further, the electrocatalytic reactor includes a reactor body, a water inlet and a water outlet are arranged on the reactor body, a supporting layer and an air pipe arranged at the bottom of the supporting layer are arranged in the reactor body, and an air outlet is arranged on the reactor body.

[0007] Further, the stirring rod assembly includes a driving motor disposed at the upper end of the reactor body, and a first stirring shaft is disposed at the output end of the driving motor.

[0008] Further, the rotating yin-yang paddle motor plate assembly includes a second stirring shaft disposed at the bottom of the planetary gear coupling, and a plurality of yin-yang paddle type electrode plates are disposed on the second stirring shaft.

[0009] Further, the annular flow guiding structure includes a first annular groove disposed on the circumferential inner wall of the reactor body, the rotating circular plate is installed in the first annular groove and rotates therein, a second annular groove is disposed on the circumferential outer wall of the rotating circular plate, the first annular groove and the second annular groove are connected to transfer wastewater, and the first annular groove is connected and communicated with the water inlet.

[0010] Further, the radial movable water spraying head assembly includes a radial guiding hole disposed on the rotating circular plate, a radial movable pipe is movably disposed in the radial guiding hole, the radial guiding hole and the second annular groove are connected to convey water, and a water spraying head is disposed on the radial movable pipe.

[0011] Further, the synchronous control assembly includes a lifting motor disposed at the output end of the driving motor, a first lifting ring is sleeved outside the driving motor, the output end of the lifting motor is fixedly connected to the surface of the first lifting ring, a plurality of first hinge seats are evenly distributed around the circumference of the first lifting ring, a second hinge seat is disposed on the radial movable pipe, the number of the first hinge seats is the same as that of the second hinge seats, and a connecting rod is hinged between the first hinge seat and the second hinge seat.

[0012] Further, the lifting linkage assembly includes a vertical guiding groove disposed outside the circumference of the second stirring shaft, a second lifting ring is sleeved outside the second stirring shaft, a lifting limiting block capable of moving up and down in the vertical guiding groove is disposed on the inner wall of the second lifting ring, a plurality of connecting shafts are disposed extending downward from the first lifting ring, a third lifting ring is disposed at the lower ends of the plurality of connecting shafts, a synchronous annular groove is disposed on the outer wall of the second lifting ring, the third lifting ring is rotatably installed in the synchronous annular groove, and a plurality of the yin-yang paddle type electrode plates are disposed on the circumferential outer wall of the second lifting ring.

[0013] A treatment step includes the following steps: S1. Introduce high-concentration organic wastewater from the water inlet of the electrocatalytic reactor, and flow it into the second annular groove of the rotating circular plate through the annular flow guiding structure; Drive the radial movable water spraying head assembly to radially extend through the synchronous control assembly, so that the water spraying head is in the edge area of the reactor body, expand the water spraying coverage range, and evenly spray it onto the particle electrode layer; S2. Start the main motor and the power supply. Through the planetary gear coupling, a speed difference is formed between the first stirring shaft and the second stirring shaft, driving the yin-yang paddle type electrode plate to rotate at a high speed, generating a shearing force on the particle electrode, and stripping the pollutants on the electrode surface. After the yin-yang paddle type electrode plate is electrified, it polarizes the particle electrode to form a micro electrolytic cell. In the anode area, organic substances are oxidized and decomposed, and in the cathode area, heavy metal ions are reduced.

[0014] S3. Open the aeration pipe and introduce air at an air-water ratio of 10:1 to keep the particle electrode in a suspended state. At the same time, during the rising process of the bubbles, the mixing of the wastewater and the electrode is strengthened, promoting the diffusion of free radicals such as ·OH.

[0015] Furthermore, the following steps are also included: S4. When the on-line monitoring system detects that the COD concentration of the wastewater drops below 50% of the initial value, the radial movable water distribution nozzle is contracted to the central area of the reactor through the synchronous control component. At the same time, the lifting linkage component drives the second lifting ring to rise, causing the yin-yang paddle type electrode plate to move up synchronously to focus on treating the low-concentration wastewater in the upper layer. S5. Adjust the aeration volume to 60% of the initial value to maintain a slight disturbance of the particle electrode and reduce energy consumption.

[0016] In summary, the beneficial effects of the present invention compared with the prior art are as follows: The present invention solves the deficiencies existing in the prior art in the field of wastewater treatment. Through the structural settings of the present invention, the following advantages are achieved: the water distribution uniformity is improved, the radial movable water distribution nozzle reciprocates to eliminate the concentration gradient in the reactor and reduce the COD concentration deviation in different regions; the comprehensiveness of treatment is enhanced, the electrode plate reciprocates up and down synchronously with the water distribution range to cover the wastewater at the full depth and avoid the layering treatment defect of the traditional fixed electrode; the water distribution, the electrode stroke and the aeration volume are dynamically adjusted. The planetary gear coupling can make the rotating yin-yang paddle and the upper water distribution nozzle rotate at different speeds. When the water distribution nozzle reciprocates, the yin-yang paddle reciprocates up and down, improving the comprehensiveness of the work. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a schematic structural diagram of the invention; Figure 2 is one of the sectional views of the invention; Figure 3 is for the invention Figure 2 local enlarged view at A; Figure 4 is for the invention Figure 2 local enlarged view at B; Figure 5 is the second sectional view of the invention. DETAILED DESCRIPTION OF THE INVENTION

[0018] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts belong to the scope of protection of the present invention.

[0019] Please refer to Figures 1-5 , the present invention provides a three-dimensional electrode reactor applicable to high-concentration organic wastewater, including an electrocatalytic reactor 1, a stirring rod assembly 2 is arranged on the electrocatalytic reactor 1, and a rotating anode and cathode paddle motor plate assembly 3 is further included. A planetary gear coupling 9 for coupling with the rotating anode and cathode paddle motor plate assembly 3 is arranged at the bottom of the stirring rod assembly 2. A rotating circular plate 4 is arranged on the stirring rod assembly 2. An annular diversion structure 5 is arranged between the rotating circular plate 4 and the electrocatalytic reactor 1. A plurality of radial movable water spraying nozzle assemblies 6 that can be communicated with the annular diversion structure 5 are evenly distributed around the center of the rotating circular plate 4 on the rotating circular plate 4. A synchronous control assembly 7 for controlling the synchronous opening and closing activities of the plurality of radial movable water spraying nozzle assemblies 6 is arranged on the stirring rod assembly 2. A lifting linkage assembly 8 is arranged between the synchronous control assembly 7 and the rotating anode and cathode paddle motor plate assembly 3; Dynamic water distribution process: The high-concentration organic wastewater is introduced from the water inlet 102 of the electrocatalytic reactor 1 and flows into the second annular groove 502 of the rotating circular plate 4 through the first annular groove 501 of the annular diversion structure 5. The synchronous control assembly 7 drives the first lifting ring 702 to move up and down through the lifting motor 701, and links the radial movable pipe 602 of the radial movable water spraying nozzle assembly 6 through the connecting rod 705, so that the water spraying nozzle 603 reciprocally expands and contracts along the radial guide hole 601, periodically spraying the wastewater between the edge and the center of the reactor, eliminating the radial concentration gradient and increasing the uniformity of water distribution; Electrode polarization and rotational shear: The driving motor 201 drives the first stirring shaft 202 and the second stirring shaft 301 to rotate through the planetary gear coupling 9, and the rotation speed of the second shaft is faster than that of the first shaft, such as 1.5:1. The anode and cathode paddle type electrode plate 302 rotates at a high speed with the second stirring shaft 301. After being energized, the polarized particle electrodes form a micro electrolytic cell: in the anode region, organic substances are oxidized and decomposed, such as chain breaking and ring opening, and in the cathode region, heavy metal ions are reduced, such as Cr 6 + → Cr³+. At the same time, the shear force generated by the high-speed rotation peels off the deposits on the surface of the particle electrodes, improving the mass transfer efficiency.

[0020] Linkage between water distribution and electrode stroke: When the water distribution nozzle 603 radially extends to the outside of the reactor, the first lifting ring 702 drives the third lifting ring 805 through the connecting shaft 804, and pushes the yin-yang paddle type electrode plate 302 along the synchronous annular groove 806 of the second lifting ring 802 to move down to the high-concentration area at the bottom of the reactor; when the water distribution nozzle contracts to the center, the electrode plate synchronously moves up to the middle and upper layers, realizing the dynamic coordination of "the water distribution range expands → the electrode action depth increases", covering the wastewater in the whole reactor, and at the same time increasing the uniformity and range of shear; Aeration and flow field strengthening: The aeration pipe 105 introduces air at an air-water ratio of 10:1 to keep the granular electrodes in a suspended state. Turbulence is formed during the rising process of the bubbles. Cooperating with the rotation and reciprocating movement of the electrode plate, it further strengthens the mixing of the wastewater and the electrodes, promotes the diffusion of free radicals such as ·OH, and at the same time prevents the caking of the granular electrodes.

[0021] Intelligent regulation and energy consumption optimization: The on-line monitoring system dynamically adjusts the operating parameters according to the COD concentration of the wastewater: in the high-concentration stage, the water distribution range is the largest, the electrodes are at the bottom, and the aeration volume is the largest to rapidly degrade pollutants; when the COD drops below 30% of the initial value, the water distribution amplitude is reduced, the electrode position is lifted, and the aeration volume is reduced to reduce energy consumption. The treated wastewater is filtered through the supporting layer 104 and discharged from the water outlet 103.

[0022] The electrocatalytic reactor 1 of the present invention includes a reactor body 101, an inlet 102 and an outlet 103 are arranged on the reactor body 101, a supporting layer 104 and an aeration pipe 105 arranged at the bottom of the supporting layer 104 are arranged in the reactor body 101, and an air outlet 106 is arranged on the reactor body 101.

[0023] The stirring rod assembly 2 of the present invention includes a driving motor 201 arranged at the upper end of the reactor body 101, and a first stirring shaft 202 is arranged at the output end of the driving motor 201.

[0024] The rotating yin-yang paddle motor plate assembly 3 of the present invention includes a second stirring shaft 301 arranged at the bottom of the planetary gear coupling 9, and a plurality of yin-yang paddle type electrode plates 302 are arranged on the second stirring shaft 301. The planetary gear coupling 9 can make the rotation speed of the second stirring shaft 301 different from the rotation speed of the first stirring shaft 202.

[0025] The annular flow guiding structure 5 of the present invention includes a first annular groove 501 provided on the circumferential inner wall of the reactor body 101. The rotating circular plate 4 is installed to rotate within the first annular groove 501. A second annular groove 502 is provided on the circumferential outer wall of the rotating circular plate 4. The first annular groove 501 and the second annular groove 502 are connected to transfer wastewater, and the first annular groove 501 is connected and communicated with the water inlet 102.

[0026] The radial movable water spraying head assembly 6 of the present invention includes a radial guiding hole 601 provided on the rotating circular plate 4. A radial movable pipe 602 is movably arranged within the radial guiding hole 601. The radial guiding hole 601 and the second annular groove 502 are connected to convey water, and a water spraying head 603 is provided on the radial movable pipe 602.

[0027] The synchronous control assembly 7 of the present invention includes a lifting motor 701 provided at the output end of the driving motor 201. A first lifting ring 702 is sleeved outside the driving motor 201. The output end of the lifting motor 701 is fixedly connected to the surface of the first lifting ring 702. A plurality of first hinge seats 703 are evenly distributed around the circumference of the first lifting ring 702 on the first lifting ring 702. A second hinge seat 704 is provided on the radial movable pipe 602. The number of the first hinge seats 703 is the same as that of the second hinge seats 704. A connecting rod 705 is hinged between the first hinge seat 703 and the second hinge seat 704.

[0028] The lifting linkage assembly 8 of the present invention includes a vertical guiding groove 801 provided on the outer circumference of the second stirring shaft 301. A second lifting ring 802 is sleeved outside the second stirring shaft 301. A lifting limiting block 803 capable of moving up and down within the vertical guiding groove 801 is provided on the inner wall of the second lifting ring 802. A plurality of connecting shafts 804 extend downward from the first lifting ring 702. A third lifting ring 805 is provided at the lower ends of the plurality of connecting shafts 804. A synchronous annular groove 806 is provided on the outer wall of the second lifting ring 802. An installation ring 807 is provided on the inner wall of the third lifting ring 805; The installation ring 807 is rotatably installed within the synchronous annular groove 806, and a plurality of yin-yang paddle type electrode plates 302 are provided on the circumferential outer wall of the second lifting ring 802.

[0029] The second lifting ring 802 enables the third lifting ring 805 to achieve synchronous lifting through the synchronous annular groove 806, but the synchronous annular groove 806 cannot interfere with the rotation of the second lifting ring 802; The cooperation between the lifting limiting block 803 and the vertical guiding groove 801 enables the second lifting ring 802 to rotate synchronously with the second stirring shaft 301.

[0030] A treatment step includes the following steps: S1. Introduce high-concentration organic wastewater from the water inlet 102 of the electrocatalytic reactor 1, and flow it into the second annular groove 502 of the rotating circular plate 4 through the annular diversion structure 5; Drive the radial movable water distribution nozzle assembly 6 to radially extend through the synchronous control assembly 7, so that the water distribution nozzle 603 is in the edge area of the reactor body 101, expand the water distribution coverage range, and evenly spray it onto the particle electrode layer; S2. Start the driving motor 201 and the power supply, and form a speed difference between the first stirring shaft 202 and the second stirring shaft 301 through the planetary gear coupling 9, drive the yin-yang paddle-type electrode plate 302 to rotate at a high speed, generate a shear force on the particle electrode, and peel off the pollutants on the electrode surface; After the yin-yang paddle-type electrode plate 302 is electrified, it polarizes the particle electrode to form a micro-electrolytic cell. In the anode area, organic matter is oxidized and decomposed, and heavy metal ions are reduced in the cathode area.

[0031] S3. Open the aeration pipe 105, introduce air at an air-water ratio of 10:1, keep the particle electrode in a suspended state, and at the same time strengthen the mixing of the wastewater and the electrode during the rising process of the bubbles, and promote the diffusion of free radicals such as ·OH.

[0032] The present invention further includes the following steps: S4. When the on-line monitoring system detects that the COD concentration of the wastewater drops below 50% of the initial value, contract the radial movable water distribution nozzle 603 to the central area of the reactor through the synchronous control assembly 7, and at the same time drive the second lifting ring 802 to rise through the lifting linkage assembly 8, so that the yin-yang paddle-type electrode plate 302 moves up synchronously to focus on treating the upper-layer low-concentration wastewater; S5. Adjust the aeration volume to 60% of the initial value to maintain a slight disturbance of the particle electrode and reduce energy consumption.

[0033] The above shows and describes 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 by the above embodiments. What is described in the above embodiments and the specification only illustrates the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of protection claimed by the present invention is defined by the appended claims and their equivalents.

Claims

1. A three-dimensional electrode reactor applicable to high-concentration organic wastewater, comprising an electrocatalytic reactor (1), and a stirring rod assembly (2) is arranged on the electrocatalytic reactor (1), characterized in that: It further includes a rotating yin-yang paddle motor plate assembly (3). A planetary gear coupling (9) for coupling with the rotating yin-yang paddle motor plate assembly (3) is provided at the bottom of the stirring rod assembly (2). A rotating circular plate (4) is provided on the stirring rod assembly (2). An annular diversion structure (5) is provided between the rotating circular plate (4) and the electrocatalytic reactor (1). A plurality of radial movable water distribution nozzle assemblies (6) communicating with the annular diversion structure (5) are evenly distributed around the center of the rotating circular plate (4) on the rotating circular plate (4). A synchronous control assembly (7) for controlling the synchronous opening and closing activities of the plurality of radial movable water distribution nozzle assemblies (6) is provided on the stirring rod assembly (2). A lifting linkage assembly (8) is provided between the synchronous control assembly (7) and the rotating yin-yang paddle motor plate assembly (3).

2. The three-dimensional electrode reactor applicable to high-concentration organic wastewater according to claim 1, wherein: The electrocatalytic reactor (1) includes a reactor body (101). A water inlet (102) and a water outlet (103) are provided on the reactor body (101). A supporting layer (104) and an aeration pipe (105) provided at the bottom of the supporting layer (104) are provided inside the reactor body (101). An air outlet (106) is provided on the reactor body (101).

3. The three-dimensional electrode reactor applicable to high-concentration organic wastewater according to claim 2, wherein: The stirring rod assembly (2) includes a driving motor (201) provided at the upper end of the reactor body (101). A first stirring shaft (202) is provided at the output end of the driving motor (201).

4. The three-dimensional electrode reactor applicable to high-concentration organic wastewater according to claim 3, characterized in that: The rotating yin-yang paddle motor plate assembly (3) includes a second stirring shaft (301) provided at the bottom of the planetary gear coupling (9). A plurality of yin-yang paddle type electrode plates (302) are provided on the second stirring shaft (301).

5. The three-dimensional electrode reactor applicable to high-concentration organic wastewater according to claim 4, wherein: The annular diversion structure (5) includes a first annular groove (501) provided on the circumferential inner wall of the reactor body (101). The rotating circular plate (4) is installed to rotate in the first annular groove (501). A second annular groove (502) is provided on the circumferential outer wall of the rotating circular plate (4). The first annular groove (501) and the second annular groove (502) are connected to transfer wastewater. The first annular groove (501) is connected and communicated with the water inlet (102).

6. The three-dimensional electrode reactor applicable to high-concentration organic wastewater according to claim 5, characterized in that: The radial movable water distribution nozzle assembly (6) includes a radial guide hole (601) provided on the rotating circular plate (4). A radial movable pipe (602) is movably provided in the radial guide hole (601). The radial guide hole (601) is connected to convey water with the second annular groove (502). A water distribution nozzle (603) is provided on the radial movable pipe (602).

7. The three-dimensional electrode reactor applicable to high-concentration organic wastewater according to claim 6, wherein: The synchronization control component (7) includes a lifting motor (701) arranged at the output end of the driving motor (201). A first lifting ring (702) is sleeved outside the driving motor (201). The output end of the lifting motor (701) is fixedly connected to the surface of the first lifting ring (702). A plurality of first hinge seats (703) are evenly distributed around the circumference of the first lifting ring (702) on the first lifting ring (702). A second hinge seat (704) is arranged on the radial movable pipe (602). The number of the first hinge seats (703) is the same as that of the second hinge seats (704). A connecting rod (705) is hinged between the first hinge seat (703) and the second hinge seat (704).

8. The three-dimensional electrode reactor applicable to high-concentration organic wastewater according to claim 7, characterized in that: The lifting linkage component (8) includes a vertical guide groove (801) arranged outside the circumference of the second stirring shaft (301). A second lifting ring (802) is sleeved outside the second stirring shaft (301). A lifting limit block (803) capable of moving up and down in the vertical guide groove (801) is arranged on the inner wall of the second lifting ring (802). A plurality of connecting shafts (804) extend downward from the first lifting ring (702). A third lifting ring (805) is arranged at the lower ends of the plurality of connecting shafts (804). A synchronous ring groove (806) is arranged on the outer wall of the second lifting ring (802). An installation ring (807) is arranged on the inner wall of the third lifting ring (805). The installation ring (807) is rotatably installed in the synchronous ring groove (806). A plurality of yin-yang paddle type electrode plates (302) are arranged on the outer circumference of the second lifting ring (802).

9. A processing step, comprising the three-dimensional electrode reactor according to any one of claims 1-8, characterized in that, including the following steps: S1. Introduce high-concentration organic wastewater from the water inlet (102) of the electrocatalytic reactor (1), and flow it into the second annular groove (502) of the rotating circular plate (4) through the annular diversion structure (5); Drive the radial movable water spraying head assembly (6) to radially extend through the synchronization control component (7), so that the water spraying head (603) is in the edge area of the reactor body (101), expand the water spraying coverage range, and evenly spray it onto the particle electrode layer; S2. Start the driving motor (201) and the power supply, form a speed difference between the first stirring shaft (202) and the second stirring shaft (301) through the planetary gear coupling (9), drive the yin-yang paddle type electrode plates (302) to rotate at a high speed, generate a shearing force on the particle electrodes, and peel off the pollutants on the electrode surface; After the yin-yang paddle type electrode plates (302) are electrified, the particle electrodes are polarized to form a micro electrolytic cell. Organic matters are oxidized and decomposed in the anode area, and heavy metal ions are reduced in the cathode area; S3. Open the air supply pipe (105), introduce air at an air-water ratio of 10:1, keep the particle electrodes in a suspended state, and at the same time strengthen the mixing of the wastewater and the electrodes during the rising process of the bubbles, and promote the diffusion of free radicals such as ·OH.

10. A processing step according to claim 9, characterized in that, It also includes the following steps: S4. When the on-line monitoring system detects that the COD concentration of the wastewater drops below 50% of the initial value, the radial movable water distribution nozzle (603) is contracted to the central area of the reactor through the synchronous control component (7), and at the same time, the lifting linkage component (8) drives the second lifting ring (802) to rise, so that the yin-yang paddle type electrode plate (302) moves up synchronously to focus on treating the upper layer of low-concentration wastewater; S5. Adjust the aeration volume to 60% of the initial value to maintain a slight disturbance of the particle electrode and reduce energy consumption.

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