Radial-flow electrolytic cell reactor and application

Abstract

The invention discloses a radial-flow type electrolytic cell reactor and application, the reactor comprises a reaction bin and a water inlet pipe, a plurality of first radial-flow electrode plates radiating outwards are arranged on the periphery of the lower part of the water inlet pipe at equal intervals in a surrounding manner, and a plurality of second radial-flow electrode plates radiating outwards are arranged on the periphery of the upper part of the water inlet pipe at equal intervals in a surrounding manner; a plurality of water outlet holes are formed in the positions, corresponding to the first radial flow electrode plates, of the bottom of the water inlet pipe, and the second radial flow electrode plates synchronously rotate around the water inlet pipe. According to the sewage treatment device, a radial flow type flowing mode from inside to outside can be formed when sewage is discharged, the electrode area can be effectively utilized, the treatment effect is improved, meanwhile, a rotatable first radial flow electrode plate continuously rotates to disturb a water body in the reaction bin, and a wave-shaped second radial flow electrode plate is matched; the flowing direction of water flow can be changed between the two radial flow electrode plates, local eddy current is formed, convective mass transfer of pollutants to the radial flow electrode plates is improved, and the treatment effect is enhanced.

Description

Technical Field

[0001] The invention relates to the technical field of sewage treatment, and in particular to a radial flow electrolytic cell reactor and application thereof. Background Art

[0002] In recent years, the problem of soil and groundwater pollution has become increasingly serious, mainly because various domestic sewage and chemical pollutants enter the soil or water bodies, which are not easily degraded and volatilized, nor easily dissolved in water. Instead, they exist as non-aqueous liquids and undergo mutual mass transfer between solid-liquid and gas-liquid through dissolution, adsorption, etc., making them difficult to be eradicated.

[0003] Multiphase extraction is an environmentally friendly soil and groundwater remediation technology. It uses vacuum extraction to extract soil gas, groundwater and other substances in the contaminated area to the ground for phase separation and pollution degradation. It usually needs to be combined with advanced oxidation processes to further improve the treatment effect. Among the advanced oxidation processes, the electrocatalytic oxidation method is currently the most widely used and rapidly developed. On the one hand, the electrical conductivity in groundwater is high, and on the other hand, chlorinated organic matter is difficult to remove due to the presence of chlorine, and chlorinated hydrocarbons are easily oxidized to generate toxic substances. The electrocatalytic oxidation process can simultaneously achieve reduction dechlorination in the cathode area and oxidation degradation in the anode area.

[0004] At present, there have been many studies on the equipment of the electrocatalytic oxidation method. Some people have improved the structure of the electrolytic cell or the electrode plate, or added some auxiliary means to improve the electrolysis efficiency. For example, the invention patent with the patent publication number CN104372375A has disclosed a water electrolyzer device that can accelerate the separation of oxygen / hydrogen from the electrode plate, which includes a water electrolyzer body, the water electrolyzer body has a storage space for accommodating electrolyte and is equipped with electrodes and electrode plates, and the water electrolyzer device is also provided with a power control unit and an ultrasonic vibration mechanism connected thereto. The invention adds a power control unit and an ultrasonic vibration mechanism to the water electrolyzer. The power control unit can monitor the current and voltage loaded on the electrode plate in real time, and supply the most suitable voltage and current to the electrode plate according to its feedback results, so that the electrolysis reaction reaches the best state and increases the amount of bubbles on the surface of the electrode plate; at the same time, the ultrasonic vibration mechanism transmits the vibration to the electrode plate in the form of ultrasonic waves, so that the electrode plate vibrates, so that the bubbles adhering thereto are forced to vibrate and quickly detach and float, accelerating the generation of oxygen and hydrogen mixed gas, and making it more convenient to use the mixed gas. However, the single method of applying ultrasound has limited effect on improving the efficiency of electrocatalytic oxidation, and further improvements and optimizations need to be made on the structure itself. Summary of the invention

[0005] In view of the above-mentioned problems, the present invention provides a radial flow electrolyzer reactor and application thereof.

[0006] The technical solution of the present invention is:

[0007] A radial flow electrolyzer reactor, comprising a reaction chamber, a water inlet pipe located at the center of the reaction chamber, a plurality of first radial flow electrode plates radiating outwards are arranged around the lower periphery of the water inlet pipe at equal intervals, a plurality of second radial flow electrode plates radiating outwards are arranged around the upper periphery of the water inlet pipe at equal intervals, and a plurality of water outlet holes are arranged at the bottom of the water inlet pipe corresponding to the position of the first radial flow electrode plates;

[0008] The first radial current electrode plate is a wave-shaped structure, and the first radial current electrode plate is fixedly arranged inside the reaction chamber;

[0009] The second radial current electrode plates are of a planar structure, and each second radial current electrode plate rotates synchronously around the water inlet pipe. The middle of each second radial current electrode plate is connected by a rotating ring, and the rotating ring is rotatably engaged with the water inlet pipe;

[0010] A top cover is provided on the top of the reaction chamber, an opening is provided in the middle of the top cover, the water inlet pipe passes through the opening, and the second power cords provided on the top of the inner end of each of the second radial current electrode plates pass through the opening. The tops of the second power cords are connected to a mobile power supply in pairs. A first water outlet pipe is provided on the side wall of the reaction chamber near the bottom of the top cover, a water pump is connected to the end of the first water outlet pipe, a reflux pipe is provided at the water outlet end of the water pump, and the reflux pipe passes through the gap formed in the middle of each of the mobile power supplies and is connected to the top of the water inlet pipe.

[0011] Furthermore, a second water outlet pipe and an air guide pipe are provided on the bottom side wall of the reaction chamber, and a foam outlet is provided on one side of the top cover.

[0012] Note: The treated sewage is discharged through the second outlet pipe, and the air guide pipe can assist in air conduction and can also be used to clean the electrode plates.

[0013] Furthermore, the first power lines provided on the sides of the first radial current electrode plates are all connected to the external power supply after passing through the top cover, a fixing block is provided at the bottom of the first radial current electrode plate, a fixing groove provided inside the fixing block is clamped with the bottom of the first radial current electrode plate, and the rear side wall of the fixing block is fixedly connected to the inner wall of the reaction chamber.

[0014] Note: This arrangement allows the first power line to be located outside the rotation range of the second radial current electrode plate, thereby preventing the second radial current electrode plate from being affected when rotating.

[0015] Furthermore, a circle of limiting grooves is provided on the inner wall of the rotating ring, and a circle of limiting rings for rotating and clamping with the limiting grooves is provided on the outer wall of the water inlet pipe.

[0016] Note: The limiting groove and the limiting ring are provided to maintain the stability when the second radial current electrode plate is driven to rotate.

[0017] Furthermore, an L-shaped connecting rod is provided at the top of the rotating ring corresponding to between two adjacent second radial current electrode plates, the top of the L-shaped connecting rod passes through the opening and the rear end is fixedly connected to a rotating disk, the outer wall of the rotating disk is provided with a tooth groove, one side of the outer wall of the rotating disk is meshed with a driving gear through the tooth groove, the driving gear is driven to rotate by a driving motor, and the rear side of the driving motor is fixedly connected to the external wall through a fixing rod.

[0018] Note: The stable rotation of the second radial current electrode plate is achieved by setting the rotating disk.

[0019] Furthermore, a plurality of support blocks of the same height are evenly spaced at the bottom of the rotating disk, the top of the support block is slidably connected to a slide groove provided at the bottom of the rotating disk, the support block is fixedly arranged on the upper surface of the top cover, the top of each mobile power supply is fixedly connected by a fixing ring, and the side wall of the fixing ring is fixedly connected to the top of the rotating disk by a plurality of connecting rods evenly spaced and rotate synchronously.

[0020] Note: The rotating disk is kept stable by the support block, and each mobile power source is kept stable by the fixing ring.

[0021] Furthermore, the diameter of the water outlet holes increases gradually from bottom to top, and the diameter distribution of the water outlet holes is 5 to 30 mm.

[0022] Note: By optimizing the aperture of the water outlet, the water can be discharged more evenly. As the water naturally flows downward, the water from the lower water outlet has a longer contact time with the electrode plate. Therefore, the water outlet is designed with a gradually decreasing aperture from top to bottom, distributing more water in the upper half of the first radial flow electrode plate, thereby increasing the contact time between the water flow and pollutants and the electrode plate and improving the treatment efficiency.

[0023] Furthermore, the number of the first radial current electrode plates and the number of the second radial current electrode plates are both 6, and the number of the mobile power supplies is correspondingly 3.

[0024] Note: By optimizing the number of first radial flow electrode plates and second radial flow electrode plates, the processing effect can be further improved. Generally, the more electrode plates are set, the greater the current is, and the better the processing effect is. However, in the present invention, setting too many first radial flow electrode plates and second radial flow electrode plates will cause the temperature to rise, the rotation efficiency to decrease, and the failure rate to increase. Therefore, it is necessary to set their number reasonably.

[0025] The present invention also discloses the application of a radial flow electrolyzer reactor as described in any one of the above items, which is applied to the treatment of contaminated groundwater, and the treatment method is:

[0026] S1, startup phase: the contaminated groundwater to be treated is injected through the water inlet pipe, and the contaminated groundwater is discharged from the water outlet. The first radial flow electrode plate and the second radial flow electrode plate are energized, and the current density is adjusted to 70-100A / m 2 When the contaminated groundwater flows out, a radial flow pattern is formed from the center to the outside. At the same time, the second radial flow electrode plate is continuously rotated to cooperate with the wave-like structure of the first radial flow electrode plate to form a local vortex inside the reaction chamber to enhance the electrocatalytic oxidation effect. The rotation speed of the second radial flow electrode plate is 20 to 60 rpm.

[0027] S2, circulation stage: turn on the water pump to extract the contaminated groundwater that rises to the first outlet pipe, and re-inject it into the water inlet pipe through the return pipe to form a continuous circulation treatment. The hydraulic retention time is 40 to 100 minutes, and the water pump flow rate is 1 to 3L / h.

[0028] The beneficial effects of the present invention are:

[0029] (1) The radial flow electrolyzer reactor of the present invention has a reasonable structural design. By designing two radial flow electrode plates of different shapes and specifications, a radial flow pattern from the inside to the outside can be formed when the sewage is discharged. The radial flow electrode plates are arranged radially in the reaction chamber, which can effectively utilize the electrode area and improve the treatment effect. At the same time, the rotatable first radial flow electrode plate can continuously rotate to disturb the water body inside the reaction chamber, and cooperate with the wave-shaped second radial flow electrode plate to change the flow direction of the water between the two radial flow electrode plates, thereby promoting the formation of local "eddy currents" and the operation in a direction perpendicular to the two radial flow electrode plates, thereby improving the convective mass transfer of pollutants to the radial flow electrode plates and enhancing the treatment effect.

[0030] (2) In order to realize the rotation of the first radial flow electrode plate, a radial flow electrolyzer reactor of the present invention is provided with relevant structural components, including a rotating ring, a rotating disk, a fixed ring, etc., which are closely connected to form a system with high stability and convenient operation, so as to realize the automatic and continuous treatment of sewage.

[0031] (3) The radial flow electrolyzer reactor of the present invention is applied to the treatment of contaminated groundwater, and has a good treatment effect on contaminated groundwater. The present invention also optimizes and limits the parameters during specific application, so that the reactor of the present invention can operate safely, stably and efficiently. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 It is a schematic diagram of the overall structure of a radial flow electrolyzer reactor of the present invention;

[0033] Figure 2 It is a front view of a radial flow electrolyzer reactor of the present invention;

[0034] Figure 3It is a schematic diagram of the internal structure of a reaction chamber of a radial flow electrolyzer reactor of the present invention;

[0035] Figure 4 It is a top view of a radial flow electrolyzer reactor of the present invention;

[0036] Figure 5 It is a cross-sectional view of the connection between the rotating ring and the water inlet pipe of a radial flow electrolyzer reactor of the present invention;

[0037] Figure 6 It is a schematic diagram of the connection structure between the first radial flow electrode plate and the fixed block of a radial flow electrolyzer reactor of the present invention;

[0038] Figure 7 It is a cross-sectional view of the connection between a support block and a rotating disk of a radial flow electrolyzer reactor of the present invention.

[0039] Among them, 1-reaction chamber, 11-first water outlet pipe, 12-second water outlet pipe, 13-air guide pipe, 2-water inlet pipe, 21-water outlet hole, 22-limiting ring, 3-first radial flow electrode plate, 31-first power cord, 32-fixing block, 33-fixing groove, 4-second radial flow electrode plate, 41-second power cord, 5-rotating ring, 51-limiting groove, 52-L-shaped rod, 6-top cover, 61-opening, 62-foam outlet, 7-mobile power supply, 71-fixing ring, 72-connecting rod, 8-water pump, 81-reflux pipe, 9-rotating disk, 91-tooth groove, 92-driving gear, 93-driving motor, 94-fixing rod, 95-support block, 96-slide groove. DETAILED DESCRIPTION

[0040] Example 1

[0041] like Figure 1 to Figure 3 As shown, a radial flow electrolyzer reactor comprises a reaction chamber 1, a water inlet pipe 2 located at the center of the reaction chamber 1, six first radial flow electrode plates 3 radiating outwards are arranged at equal intervals around the lower periphery of the water inlet pipe 2, six second radial flow electrode plates 4 radiating outwards are arranged at equal intervals around the upper periphery of the water inlet pipe 2, a plurality of water outlet holes 21 are arranged at the bottom of the water inlet pipe 2 corresponding to the positions of the first radial flow electrode plates 3, the apertures of the water outlet holes 21 gradually increase from bottom to top, and the apertures of the water outlet holes 21 are distributed in the range of 5 to 30 mm, and are 5 mm, 8 mm, 12 mm, 15 mm, 20 mm, 24 mm, 26 mm, and 30 mm from bottom to top;

[0042] like Figure 3 As shown, the first radial current electrode plate 3 is a wave-like structure, and the first radial current electrode plate 3 is fixedly arranged inside the reaction chamber 1;

[0043] like Figure 3 and Figure 5As shown, the second radial current electrode plate 4 is a planar structure, each second radial current electrode plate 4 rotates synchronously around the water inlet pipe 2, and the middle part of each second radial current electrode plate 4 is connected by a rotating ring 5, and the rotating ring 5 is rotatably engaged with the water inlet pipe 2. The inner wall of the rotating ring 5 is provided with a circle of limiting grooves 51, and the outer wall of the water inlet pipe 2 is provided with a circle of limiting rings 22 for rotatably engaging with the limiting grooves 51;

[0044] like Figure 1 and Figure 2 As shown, a top cover 6 is provided on the top of the reaction chamber 1, an opening 61 is provided in the middle of the top cover 6, the water inlet pipe 2 passes through the opening 61, and the second power lines 41 provided on the top of the inner end of each second radial current electrode plate 4 all pass through the opening 61, and the tops of the second power lines 41 are connected to a mobile power supply 7 in pairs, and a first water outlet pipe 11 is provided on the side wall of the reaction chamber 1 near the bottom of the top cover 6, and a water pump 8 is connected to the end of the first water outlet pipe 11, and a return pipe 81 is provided at the water outlet end of the water pump 8, and the return pipe 81 passes through the gap formed in the middle of each mobile power supply 7 and is connected to the top of the water inlet pipe 2;

[0045] like Figure 1 and Figure 6 As shown, the first power lines 31 provided on the side of the first radial current electrode plate 3 are all connected to the external power supply after passing through the top cover 6, and the bottom of the first radial current electrode plate 3 is provided with a fixing block 32, and the fixing groove 33 provided inside the fixing block 32 is clamped with the bottom of the first radial current electrode plate 3, and the rear side wall of the fixing block 32 is fixedly connected to the inner wall of the reaction chamber 1;

[0046] like Figure 3 , Figure 4 and Figure 7 As shown, an L-shaped connecting rod 52 is provided at the top of the rotating ring 5 corresponding to between two adjacent second radial current electrode plates 4, and a rotating disk 9 is fixedly connected to the rear end after the top of the L-shaped connecting rod 52 passes through the opening 61. The outer wall of the rotating disk 9 is provided with a tooth groove 91, and a driving gear 92 is meshed and connected to one side of the outer wall of the rotating disk 9 through the tooth groove 91. The driving gear 92 is driven to rotate by a driving motor 93, and the driving motor 93 is a commercially available gear reduction motor. The rear side of the driving motor 93 is fixedly connected to the external wall through a fixing rod 94. Three support blocks 95 of the same height are evenly spaced at the bottom of the rotating disk 9. The top of the support block 95 is slidably connected to the slide groove 96 provided at the bottom of the rotating disk 9. The support block 95 is fixedly arranged on the upper surface of the top cover 6, and the top of each mobile power supply 7 is fixedly connected by a fixing ring 71. The side wall of the fixing ring 71 is fixedly connected to the top of the rotating disk 9 through a plurality of connecting rods 72 arranged at equal intervals and rotates synchronously.

[0047] like Figure 1 As shown, a second water outlet pipe 12 and an air guide pipe 13 are provided on the bottom side wall of the reaction chamber 1, and a foam outlet 62 is provided on one side of the top cover 6.

[0048] The anodes of the first radial current electrode plate 3 and the second radial current electrode plate 4 are ruthenium-iridium electrodes, the cathodes are titanium, and the rotating ring 5, the fixed block 32, and the L-shaped connecting rod 52 are all made of epoxy resin insulating material.

[0049] Example 2

[0050] The difference between this embodiment and embodiment 1 is that:

[0051] There are eight first radial current electrode plates 3 and eight second radial current electrode plates 4 , and correspondingly there are four mobile power supplies 7 .

[0052] Example 3

[0053] The difference between this embodiment and embodiment 1 is that:

[0054] The apertures of the water outlet holes 21 are distributed in a range of 10 to 50 mm, namely, 10 mm, 15 mm, 20 mm, 25 mm, 30 mm, 35 mm, 40 mm, 45 mm, and 50 mm from bottom to top.

[0055] Example 4

[0056] The difference between this embodiment and embodiment 1 is that:

[0057] Four support blocks 95 of the same height are evenly spaced at the bottom of the rotating disk 9.

[0058] Example 5

[0059] This embodiment records the application of a radial flow electrolyzer reactor in Example 1, which is applied to the treatment of contaminated groundwater. The treatment method is:

[0060] S1, start-up phase: the contaminated groundwater to be treated is injected through the water inlet pipe 2, and the contaminated groundwater is discharged from the water outlet 21. The first radial flow electrode plate 3 and the second radial flow electrode plate 4 are energized, and the current density is adjusted to 80A / m 2 When the contaminated groundwater flows out, a radial flow pattern is formed from the center to the outside. At the same time, the second radial flow electrode plate 4 is continuously rotated to cooperate with the wave-like structure of the first radial flow electrode plate 3 to form a local eddy current inside the reaction chamber 1 to enhance the electrocatalytic oxidation effect. The rotation speed of the second radial flow electrode plate 4 is 40rpm;

[0061] S2, circulation stage: start the water pump 8 to pump out the contaminated groundwater that rises to the first outlet pipe 11, and re-inject it into the water inlet pipe 2 through the reflux pipe 81 to form a continuous circulation treatment. The hydraulic retention time is 60 minutes, and the flow rate of the water pump 8 is 2L / h. After the end, the sludge is discharged through the bottom of the reaction chamber 1.

[0062] Example 6

[0063] The difference between this embodiment and Embodiment 5 is that the specific parameter settings are different.

[0064] S1, start-up phase: the contaminated groundwater to be treated is injected through the water inlet pipe 2, and the contaminated groundwater is discharged from the water outlet 21. The first radial flow electrode plate 3 and the second radial flow electrode plate 4 are energized, and the current density is adjusted to 70A / m 2 When the contaminated groundwater flows out, a radial flow pattern is formed from the center to the outside. At the same time, the second radial flow electrode plate 4 is continuously rotated to cooperate with the wave-like structure of the first radial flow electrode plate 3 to form a local eddy current inside the reaction chamber 1 to enhance the electrocatalytic oxidation effect. The rotation speed of the second radial flow electrode plate 4 is 60rpm;

[0065] S2, circulation stage: turn on the water pump 8 to pump out the contaminated groundwater that rises to the first outlet pipe 11, and re-inject it into the water inlet pipe 2 through the return pipe 81 to form a continuous circulation treatment. The hydraulic retention time is 40 minutes and the flow rate of the water pump 8 is 1L / h.

[0066] Example 7

[0067] The difference between this embodiment and Embodiment 5 is that the specific parameter settings are different.

[0068] S1, start-up phase: the contaminated groundwater to be treated is injected through the water inlet pipe 2, and the contaminated groundwater is discharged from the water outlet 21. The first radial flow electrode plate 3 and the second radial flow electrode plate 4 are energized, and the current density is adjusted to 100A / m 2 When the contaminated groundwater flows out, a radial flow pattern is formed from the center to the outside. At the same time, the second radial flow electrode plate 4 is continuously rotated to cooperate with the wave-like structure of the first radial flow electrode plate 3 to form a local eddy current inside the reaction chamber 1 to enhance the electrocatalytic oxidation effect. The rotation speed of the second radial flow electrode plate 4 is 20 rpm.

[0069] S2, circulation stage: turn on the water pump 8 to pump out the contaminated groundwater that rises to the first outlet pipe 11, and re-inject it into the water inlet pipe 2 through the return pipe 81 to form a continuous circulation treatment. The hydraulic retention time is 100 minutes and the flow rate of the water pump 8 is 3L / h.

[0070] Note: In Examples 5 to 7, we provide three groups of different reactor usage parameters, among which different parameters are reasonably selected according to the different volumes of sewage treatment. When the sewage treatment volume is large, or the reactor specifications are large, it is recommended to use the parameters in Example 7, high current, low speed, long hydraulic retention time, and high flow rate. When the sewage treatment volume is small, or the reactor specifications are small, it is recommended to use the parameters in Example 6, low current, high speed, short hydraulic retention time, and low flow rate.

[0071] Working principle:

[0072] Next, we briefly explain the rotation principle of the second radial flow electrode plate 4 in a radial flow electrolyzer reactor of the present invention.

[0073] When in use, the driving motor 93 is turned on to drive the driving gear 92 to rotate, and then the tooth groove 91 is meshed and rotated to drive the rotating disk 9 to rotate. At the same time, under the action of the connecting rod 72, each mobile power source 7 rotates synchronously to maintain the stable rotation and stable power supply of the second power line 41. Under the action of the L-shaped rod 52, the rotating ring 5 is driven to rotate, so that the limiting ring 22 rotates in the limiting groove 51 to keep the rotating ring 5 rotating without displacement.

[0074] At this time, each of the second radial current electrode plates 4 fixedly connected to the rotating ring 5 rotates synchronously, thereby disturbing the upper water flow in the reaction chamber 2 .

[0075] Experimental example

[0076] According to the reactor of Example 1 and the application method of Example 5, we conducted a field simulation experiment to treat contaminated groundwater and compared it with an ordinary electrolytic cell reactor. The ordinary electrolytic cell reactor only has the second radial current electrode plate 2 that is the same as that of Example 1. The detection method is: qualitative and semi-quantitative analysis of the sample to be tested is performed by 7890B gas chromatography-2YF-DC-019 mass spectrometry, and the detected compounds are automatically identified by Masshunter software, and the matching degree is higher than 80%; according to the "Water and Wastewater Detection and Analysis Methods (Fourth Edition)", the metal ion content in the solution is determined by iCAP7400DuoMFC inductively coupled plasma emission spectrometer. The results are shown in Table 1.

[0077] Table 1 Comparison of the treatment results of the present invention and the comparative example

[0078]

[0079]

[0080] It can be seen that the reactor of the present invention has significantly improved the COD removal rate of contaminated groundwater. At the same time, the electrode plate area used to treat unit volume of wastewater is greatly reduced, and the power consumption for treating the same volume of contaminated groundwater is also slightly higher than that of ordinary electrolyzer reactors.

Claims

1. A radial flow electrolyzer reactor, characterized in that: It comprises a reaction chamber (1), a water inlet pipe (2) located at the center of the reaction chamber (1), a plurality of first radial current electrode plates (3) radiating outwards are arranged at equal intervals around the lower periphery of the water inlet pipe (2), a plurality of second radial current electrode plates (4) radiating outwards are arranged at equal intervals around the upper periphery of the water inlet pipe (2), and a plurality of water outlet holes (21) are arranged at the bottom of the water inlet pipe (2) corresponding to the position of the first radial current electrode plates (3); The first radial current electrode plate (3) has a wave-like structure, and the first radial current electrode plate (3) is fixedly arranged inside the reaction chamber (1); The second radial current electrode plates (4) are of a planar structure, and each second radial current electrode plate (4) rotates synchronously around the water inlet pipe (2). The middle of each second radial current electrode plate (4) is connected via a rotating ring (5), and the rotating ring (5) is rotatably engaged with the water inlet pipe (2); The top of the reaction chamber (1) is provided with a top cover (6), the middle of the top cover (6) is provided with an opening (61), the water inlet pipe (2) passes through the opening (61), the second power lines (41) provided at the top of the inner ends of the second radial current electrode plates (4) all pass through the opening (61), the tops of the second power lines (41) are connected to a mobile power source (7) in pairs, the side wall of the reaction chamber (1) near the bottom of the top cover (6) is provided with a first water outlet pipe (11), the end of the first water outlet pipe (11) is connected to a water pump (8), the water outlet end of the water pump (8) is provided with a return pipe (81), the return pipe (81) passes through the gap formed in the middle of each mobile power source (7) and is connected to the top of the water inlet pipe (2).

2. A radial flow electrolyzer reactor according to claim 1, characterized in that: The bottom side wall of the reaction chamber (1) is provided with a second water outlet pipe (12) and an air guide pipe (13), and one side of the top cover (6) is provided with a foam outlet (62).

3. A radial flow electrolyzer reactor according to claim 1, characterized in that: The first power lines (31) provided on the sides of the first radial current electrode plate (3) are all connected to an external power source after passing through the top cover (6); a fixing block (32) is provided at the bottom of the first radial current electrode plate (3); a fixing groove (33) provided inside the fixing block (32) is clamped with the bottom of the first radial current electrode plate (3); and a rear side wall of the fixing block (32) is fixedly connected to the inner wall of the reaction chamber (1).

4. A radial flow electrolyzer reactor according to claim 1, characterized in that: The inner wall of the rotating ring (5) is provided with a circle of limiting grooves (51), and the outer wall of the water inlet pipe (2) is provided with a circle of limiting rings (22) for rotating and clamping with the limiting grooves (51).

5. A radial flow electrolyzer reactor according to claim 1, characterized in that: An L-shaped connecting rod (52) is provided at the top of the rotating ring (5) between two adjacent second radial current electrode plates (4); the top of the L-shaped connecting rod (52) passes through the opening (61), and the rear end is fixedly connected to a rotating disk (9); a tooth groove (91) is provided on the outer wall of the rotating disk (9); a driving gear (92) is meshedly connected to one side of the outer wall of the rotating disk (9) through the tooth groove (91); the driving gear (92) is driven to rotate by a driving motor (93); and the rear side of the driving motor (93) is fixedly connected to the external wall through a fixing rod (94).

6. A radial flow electrolyzer reactor according to claim 5, characterized in that: A plurality of support blocks (95) of the same height are evenly spaced at the bottom of the rotating disk (9); the top of the support block (95) is slidably connected to a slide groove (96) provided at the bottom of the rotating disk (9); the support block (95) is fixedly arranged on the upper surface of the top cover (6); the top of each of the mobile power sources (7) is fixedly connected via a fixing ring (71); the side wall of the fixing ring (71) is fixedly connected to the top of the rotating disk (9) via a plurality of connecting rods (72) evenly spaced and rotates synchronously.

7. A radial flow electrolyzer reactor according to claim 1, characterized in that: The diameter of the water outlet holes (21) gradually increases from bottom to top, and the diameter distribution of the water outlet holes (21) is 5 to 30 mm.

8. The radial flow electrolyzer reactor according to claim 1, characterized in that: There are six of each of the first radial current electrode plates (3) and the second radial current electrode plates (4), and correspondingly there are three of the mobile power supplies (7).

9. The use of a radial flow electrolyzer reactor according to any one of claims 1 to 8, characterized in that: It is applied to the treatment of contaminated groundwater, and the treatment method is: S1, start-up phase: the contaminated groundwater to be treated is injected through the water inlet pipe (2), the contaminated groundwater is discharged from the water outlet hole (21), the first radial flow electrode plate (3) and the second radial flow electrode plate (4) are energized, and the current density is adjusted to 70-100A / m 2 When the contaminated groundwater flows out, a radial flow pattern is formed from the center to the outside. At the same time, the second radial flow electrode plate (4) is continuously rotated to cooperate with the wave-like structure of the first radial flow electrode plate (3) to form a local vortex inside the reaction chamber (1), thereby strengthening the electrocatalytic oxidation effect. The rotation speed of the second radial flow electrode plate (4) is 20 to 60 rpm; S2, circulation stage: start the water pump (8) to extract the contaminated groundwater that rises to the first outlet pipe (11), and re-inject it into the water inlet pipe (2) through the return pipe (81), forming a continuous circulation treatment, the hydraulic retention time is 40 to 100 minutes, and the flow rate of the water pump (8) is 1 to 3L / h.

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