Anti-hardening iron-carbon micro-electrolysis reactor

Abstract

The utility model belongs to the technical field of water treatment, and particularly discloses an anti-hardening iron-carbon micro-electrolysis reactor. An overflow weir is arranged at the upper part of the micro-electrolysis reaction tank of the reactor, and a water outlet is formed in the lower part of the overflow weir; a filler supporting hopper is arranged above the water inlet and the air inlet in the micro-electrolysis reaction tank, the filler supporting hopper is of a concave plate-shaped structure, a plurality of through holes are distributed in the surface of the filler supporting hopper, a filler area is arranged on the filler supporting hopper, and a spiral conveyor is vertically arranged on the filler supporting hopper; the lower end of a conveying pipe of the spiral conveyor extends to be close to the bottom of the filler supporting hopper, the upper end of the conveying pipe extends to be close to the top end of the overflow weir, a motor of the spiral conveyor is fixed to the top end of the micro-electrolysis reaction tank, and a motor driving shaft penetrates through the top wall of the micro-electrolysis reaction tank and is connected with a conveying shaft extending out of the conveying pipe. The device has the characteristics of simple structure, no filler hardening, high reaction efficiency and energy consumption saving.

Description

Technical Field

[0001] The utility model belongs to the technical field of water treatment, and particularly relates to an anti-caking iron-carbon micro-electrolysis reactor with simple structure, non-caking packing, high reaction efficiency and energy consumption saving. Background Art

[0002] Iron-carbon micro-electrolysis is a technology that uses the potential difference between iron and carbon to form a micro-battery effect, and generates strong oxidants such as hydroxyl radicals through oxidation-reduction reactions, as well as multiple functions such as flocculation adsorption, coprecipitation, and electro-enrichment to treat wastewater. It can break the high-molecular organic matter chain in wastewater, convert high-molecular organic matter into small-molecule substances, degrade refractory pollutants in wastewater, thereby improving the biodegradability (BOD / COD) of wastewater, and providing better conditions for subsequent biological treatment. Since the iron-carbon micro-electrolysis technology for treating wastewater not only has high efficiency and low treatment cost, but also has the characteristics of low secondary pollution, it is often used to treat refractory COD, and at the same time has good effects on removing heavy metals, total phosphorus, chromaticity, etc. It is widely used in the treatment projects of industrial wastewater such as printing and dyeing, electroplating, petrochemical, pharmaceutical, gas washing, printed circuit board production, and wastewater containing arsenic and fluorine, and has achieved good economic and environmental protection effects.

[0003] In practical applications, due to the generation of iron ion precipitation during the operation of the iron-carbon micro-electrolysis reactor, and the easy adsorption and accumulation of suspended solids, colloids, and biofilms in wastewater on the surface of iron-carbon particles to form a coating layer, as well as the deposition of oxidation and reduction products on the surface of iron-carbon particles, the iron-carbon particles are adhesively connected and agglomerated, resulting in the blockage of the reaction bed layer, the obstruction of the water flow channel, and the decline of the mass transfer efficiency, seriously affecting the treatment effect and system stability.

[0004] In the prior art, to solve the problem of easy caking of iron-carbon packing in the iron-carbon micro-electrolysis reactor, it is mainly solved from two technical directions: modification of iron-carbon packing and improvement of reactor structure. For example, the iron-carbon packing adopts technologies such as porous structure and surface coating to enhance the anti-caking ability; an appropriate amount of scale inhibitor is added to the wastewater to prevent the deposition of inorganic salts; there is also a backwashing structure set up, and the air-water combined backwashing method is adopted to remove sediments and blockages; there is also an aeration volume of 3-5 times the water inflow volume introduced into the iron-carbon micro-electrolysis reactor. While providing sufficient dissolved oxygen for the iron-carbon micro-electrolysis reaction, a large amount of surplus gas is used to scour the surface of the iron-carbon packing to reduce the caking risk. However, the foregoing various methods also have problems such as the relatively high cost of adding scale inhibitors, and the generated inorganic salts have a strong inhibitory effect on microorganisms in the subsequent treatment of wastewater; while the backwashing structure is complex and the water consumption for backwashing is also large; a large amount of aeration also has a large gas consumption, and it will also cause the hydrolysis and oxidation of the dissolved divalent iron ions to generate ferrous hydroxide and iron hydroxide hydrated complexes, and the complexes are adsorbed on the surface of the iron-carbon packing and are easy to form a passivation film.

[0005] In the prior art, an activated carbon bed is arranged in the middle of an iron-carbon micro-electrolysis reactor, a spongy iron bed layer is arranged at the bottom, and an aeration system is arranged at the bottom of the spongy iron bed layer. First, pollutants in the wastewater to be treated are enriched and adsorbed by the activated carbon bed, and then high-speed gas is injected into the spongy iron bed layer to entrain the spongy iron filter material in the spongy iron bed layer into the activated carbon bed, and an iron-carbon micro-electrolysis reaction occurs through sufficient contact with the activated carbon, so as to fully degrade the pollutants enriched on the activated carbon, achieving the purpose of solving the problem that the iron-carbon filler is prone to caking by making the iron and carbon contact intermittently. However, after the spongy iron filter material enters the activated carbon bed, it gradually passes through the activated carbon bed by the gravity of the spongy iron filter material and falls onto the porous folding plate, and then falls back to the spongy iron bed layer through the holes of the porous folding plate. Due to the blockage of the activated carbon after the spongy iron filter material enters the activated carbon bed, the falling speed by gravity is slow, resulting in the problem that the iron-carbon particles are still prone to adhesion and agglomeration to cause caking, and high-speed gas needs to be introduced during the reaction process to maintain the contact between the spongy iron filter material and the activated carbon, so the gas consumption is large and the energy consumption is high. There is also a horizontally rotatable packing bed arranged in the middle of the iron-carbon micro-electrolysis reactor, carbon-iron filler is filled in the packing bed, and an aeration device and a water distribution device are arranged at the bottom of the iron-carbon micro-electrolysis reactor. It can not only make the iron-carbon micro-electrolysis filler in an expanded state through the synchronous action of high-speed water flow and high-speed air flow to avoid problems such as passivation and caking blockage caused by packing accumulation, but also stir and rub the iron-carbon filler through the rotating packing bed to further avoid the caking and passivation problems of the iron-carbon filler. However, not only is it difficult to maintain the long-term sealing of the horizontal rotation, but also the energy consumption of rotating the entire packing bed is large, and the high-speed water flow and air flow also result in high energy consumption. In addition, there is also a vertical stirring mechanism arranged in the iron-carbon micro-electrolysis reactor. The motor of the stirring mechanism drives the rotating rod to rotate, and the rotating rotating rod drives the threaded rotating plate to rotate in the reactor through two groups of circular partitions, forming a circular scraper in the reactor to scrape the caking on the inner wall to prevent the micro-electrolysis filler from caking on the inner wall of the reactor. The threaded belt arranged on the rotating rod can break the micro-electrolysis filler to prevent the micro-electrolysis filler from caking on the rotating rod. Although the stirring mechanism can avoid the caking problem and does not require the assistance of high-speed water flow and high-speed gas, since all the iron-carbon fillers need to be stirred during the reaction process, not only the energy consumption is high, but also the iron-carbon fillers are easily broken, and the upper and lower circular partitions also make it difficult for the sediment to sink to the bottom and be removed, resulting in the sediment blocking the rising water flow channel and reducing the wastewater treatment efficiency. Summary of the Utility Model

[0006] In view of the deficiencies in the prior art, the present utility model provides an anti-caking iron-carbon micro-electrolysis reactor with a simple structure, non-caking filler, high reaction efficiency, and energy saving.

[0007] The present utility model is realized as follows: It includes a micro-electrolysis reaction tank. An inlet and an air inlet are respectively arranged on the side wall of the lower part of the micro-electrolysis reaction tank. An overflow weir is arranged in the upper part of the micro-electrolysis reaction tank. An outlet communicating with the lower part of the overflow weir is arranged on the side wall of the upper part of the micro-electrolysis reaction tank.

[0008] Above the inlet and the air inlet in the micro-electrolysis reaction tank, there is a packing support hopper. The packing support hopper is a concave plate-like structure and its edge fits with the inner wall of the micro-electrolysis reaction tank. A number of through holes are distributed on the packing support hopper. A packing area is arranged on the packing support hopper in the micro-electrolysis reaction tank. In the micro-electrolysis reaction tank, a screw conveyor is vertically arranged in the middle above the packing support hopper. The lower end of the conveying pipe of the screw conveyor extends to near the bottom of the hopper of the packing support hopper. The upper end of the conveying pipe penetrates upward through the packing area and extends to near the top of the overflow weir. The motor of the screw conveyor is fixedly arranged at the top of the micro-electrolysis reaction tank. The driving shaft of the motor penetrates the top wall of the micro-electrolysis reaction tank and is connected with the conveying shaft extending out of the conveying pipe.

[0009] Further, a discharge cover is fixedly arranged at the top end of the conveying pipe. The discharge cover is a trapezoidal or hemispherical convex structure with an opening downward. The top outlet of the conveying pipe is lower than the top of the overflow weir and higher than the highest point of the discharge cover.

[0010] Further, an inverted "V"-shaped or hemispherical feeding cover with a downward opening is fixedly arranged at the bottom end of the conveying pipe. The distance between the bottom end of the feeding cover and the bottom of the hopper of the packing support hopper is greater than the particle size of the packing.

[0011] Further, a number of support rods fixedly connected with the inner wall of the micro-electrolysis reaction tank are fixedly arranged at intervals on the outer wall of the conveying pipe.

[0012] Further, the packing support hopper is a mesh plate or a perforated plate. The aperture of the through holes on the packing support hopper is smaller than the particle size of the packing. A bracket is fixedly arranged at the bottom end of the packing support hopper. The bracket is fixedly connected with the inner wall or the bottom wall of the micro-electrolysis reaction tank.

[0013] Further, a water distribution pipe is fixedly arranged below the packing support hopper in the micro-electrolysis reaction tank. The water distribution pipe is communicated with the inlet. A number of water distribution holes are arranged at intervals on the water distribution pipe. An air distribution pipe is fixedly arranged between the packing support hopper and the water distribution pipe in the micro-electrolysis reaction tank. The air distribution pipe is communicated with the air inlet. A number of aerators are arranged at intervals on the air distribution pipe.

[0014] Further, a sludge hopper is also arranged at the bottom of the micro-electrolysis reaction tank. A sludge discharge port is arranged at the bottom end of the sludge hopper.

[0015] Furthermore, the packing in the packing area is spherical packing or ellipsoidal packing, and a maintenance opening is provided on the top and / or side wall of the micro-electrolysis reaction tank.

[0016] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0017] 1. In the present utility model, a packing support hopper is provided above the water inlet and air inlet in the iron-carbon micro-electrolysis reactor, and a packing area is arranged on the packing support hopper. Then, innovatively, a screw conveyor is vertically arranged in the middle above the packing support hopper, with the lower end extending close to the bottom of the hopper and the upper end extending close to the top of the overflow weir. Thus, during the iron-carbon micro-electrolysis reaction, the iron-carbon packing at the bottom of the packing support hopper can be forcibly lifted above the packing area, enabling the iron-carbon packing in the packing area to form a mandatory up-and-down circulating flow. This can not only shake off the sediments on the surface of the iron-carbon packing but also cause the iron-carbon packing to collide and rub against each other through forced lifting and automatic descent, breaking the coating layer on the surface of the iron-carbon packing and the adhered and agglomerated iron-carbon packing. Ultimately, the problem of packing caking is effectively solved.

[0018] 2. In the present utility model, a packing support hopper with several through holes is set to support the packing area, combined with the screw conveyor to form a mandatory up-and-down circulating flow of the iron-carbon packing. The sediment and broken small iron-carbon packing can fall to the bottom of the iron-carbon micro-electrolysis reactor through the through holes, effectively filtering out the sediment and small iron-carbon packing in the packing area, avoiding the blockage of the rising water flow channel by the sediment and small iron-carbon packing, and ensuring the wastewater treatment efficiency. Moreover, since the screw conveyor stirs the iron-carbon packing during the lifting process, it can enhance the mass transfer area between the iron-carbon packing and the pollutants in the wastewater, thereby improving the wastewater treatment efficiency. In addition, since there is no dead zone in the packing area outside the conveying pipe and the iron-carbon packing gradually descends and is misaligned with each other, it can ensure that the pollutants in the wastewater can fully contact with the iron-carbon packing, resulting in a relatively high wastewater treatment efficiency.

[0019] 3. In the present utility model, the screw conveyor arranged in the middle above the packing support hopper forcibly lifts the iron-carbon packing at the bottom of the hopper above the packing area and then freely falls to form a circulating flow. Since the screw conveyor of the present utility model is lifted through a conveying pipe and only a small amount of lifting is required per unit time to achieve the circulating flow, compared with the technical solutions of the overall rotation of the iron-carbon packing and the overall agitation in the iron-carbon micro-electrolysis reactor, it can effectively save energy consumption. Moreover, since the present utility model solves the caking problem without the need for large-volume flushing, little or only a small amount of aeration is required during the iron-carbon micro-electrolysis reaction, reducing the energy consumption of aeration.

[0020] 4. The screw conveyor of the present utility model lifts the iron-carbon filler through the conveying pipe and the auger inside it. By arranging a feed cover at the bottom end of the conveying pipe to guide the iron-carbon filler, it can effectively reduce or even avoid the extrusion and breakage of the iron-carbon filler at the feed port. Moreover, by lifting the iron-carbon filler through a regular and smooth conveying pipe, the mutual friction between the upward-lifted iron-carbon filler and the downward-lifted iron-carbon filler can be reduced, and the mutual friction and extrusion of the iron-carbon filler during the lifting process can also be reduced, thereby avoiding the breakage of the iron-carbon filler and prolonging the service life of the iron-carbon filler. By arranging a discharge cover at the top end of the conveying pipe, it can ensure that the iron-carbon filler is evenly distributed after discharging, thereby avoiding the short circuit of the movement of the iron-carbon filler and ensuring that the iron-carbon filler in the filler area can move in a cycle without caking.

[0021] In summary, the present utility model has the characteristics of simple structure, non-caking of the filler, high reaction efficiency, and energy saving. Brief Description of the Drawings

[0022] Figure 1 is one of the structural schematic diagrams of the present utility model;

[0023] Figure 2 is the second structural schematic diagram of the present utility model;

[0024] In the figure: 1 - micro-electrolysis reaction tank, 11 - water inlet, 12 - air inlet, 13 - water outlet, 14 - sludge discharge port, 2 - overflow weir, 3 - filler support hopper, 4 - screw conveyor, 41 - conveying pipe, 42 - motor, 43 - conveying shaft, 44 - discharge cover, 45 - feed cover, 46 - support rod, 5 - filler area, 6 - bracket, 7 - water distribution pipe, 8 - aeration pipe, 9 - sludge hopper. Detailed Embodiment

[0025] The following further describes the present utility model with reference to the drawings and embodiments, but the present utility model is not limited in any way. Any change or improvement made based on the teachings of the present utility model falls within the protection scope of the present utility model.

[0026] As Figure 1 and 2 shown, the present utility model includes a micro-electrolysis reaction tank 1. A water inlet 11 and an air inlet 12 are respectively arranged on the side wall of the lower part of the micro-electrolysis reaction tank 1. An overflow weir 2 is arranged in the upper part of the micro-electrolysis reaction tank 1. A water outlet 13 communicating with the lower part of the overflow weir 2 is arranged on the side wall of the upper part of the micro-electrolysis reaction tank 1;

[0027] Above the water inlet 11 and the air inlet 12 in the micro-electrolysis reaction tank 1, a packing support hopper 3 is provided. The packing support hopper 3 is a concave plate-like structure, and its edge fits with the inner wall of the micro-electrolysis reaction tank 1. A number of through holes are distributed on the packing support hopper 3. In the micro-electrolysis reaction tank 1, a packing area 5 is arranged on the packing support hopper 3. In the middle above the packing support hopper 3 in the micro-electrolysis reaction tank 1, a screw conveyor 4 is vertically arranged. The lower end of the conveying pipe 41 of the screw conveyor 4 extends to near the bottom of the hopper of the packing support hopper 3. The upper end of the conveying pipe 41 penetrates upward through the packing area 5 and extends to near the top of the overflow weir 2. The motor 42 of the screw conveyor 4 is fixedly arranged at the top of the micro-electrolysis reaction tank 1. The drive shaft of the motor 42 penetrates the top wall of the micro-electrolysis reaction tank 1 and is connected to the conveying shaft 43 extending out of the conveying pipe 41.

[0028] The outer diameter of the conveying pipe 41 is 1 / 10 to 1 / 3 of the inner diameter of the micro-electrolysis reaction tank 1.

[0029] At the top end of the conveying pipe 41, a discharge hood 44 is fixedly arranged. The discharge hood 44 is a trapezoidal or upwardly convex hemispherical structure with an opening downward. The top outlet of the conveying pipe 41 is lower than the top of the overflow weir 2 and higher than the highest point of the discharge hood 44.

[0030] At the bottom end of the conveying pipe 41, an inverted "V"-shaped or hemispherical feeding hood 45 with a downward opening is fixedly arranged. The distance between the bottom end of the feeding hood 45 and the bottom of the hopper of the packing support hopper 3 is greater than the particle size of the packing.

[0031] The packing support hopper 3 is an inverted trapezoidal concave structure or an upwardly opening hemispherical concave structure.

[0032] On the outer wall of the conveying pipe 41, a number of support rods 46 fixedly connected to the inner wall of the micro-electrolysis reaction tank 1 are fixedly arranged at intervals.

[0033] The packing support hopper 3 is a wire mesh plate or a perforated plate. The aperture of the through holes on the packing support hopper 3 is smaller than the particle size of the packing. At the bottom end of the packing support hopper 3, a support 6 is fixedly arranged. The support 6 is fixedly connected to the inner wall or the bottom wall of the micro-electrolysis reaction tank 1.

[0034] In the micro-electrolysis reaction tank 1, a water distribution pipe 7 is fixedly arranged below the packing support hopper 3. The water distribution pipe 7 is communicated with the water inlet 11. A number of water distribution holes are arranged at intervals on the water distribution pipe 7. In the micro-electrolysis reaction tank 1, an air distribution pipe 8 is fixedly arranged between the packing support hopper 3 and the water distribution pipe 7. The air distribution pipe 8 is communicated with the air inlet 12. A number of aerators are arranged at intervals on the air distribution pipe 8.

[0035] At the bottom of the micro-electrolysis reaction tank 1, a sludge hopper 9 is further arranged. A sludge discharge port 14 is arranged at the bottom end of the sludge hopper 9.

[0036] The packing in the packing area 5 is spherical packing or ellipsoidal packing, and a maintenance opening is provided on the top and / or side wall of the micro-electrolysis reaction tank 1. Embodiment

[0037] S100. Through the maintenance opening on the micro-electrolysis reaction tank 1, add the ellipsoidal iron-carbon packing to the packing support hopper 3 as required. Then, open the water inlet valve connected to the water inlet 11 and the water outlet valve connected to the water outlet 13 respectively. After the wastewater to be treated flows into the micro-electrolysis reaction tank 1, it flows upward through the packing area 5, and the pollutants in the wastewater react with the iron-carbon packing in the packing area 5 through iron-carbon micro-electrolysis and are degraded. The degraded wastewater overflows from the overflow weir 2 and flows out through the water outlet 13.

[0038] S200: During the iron-carbon micro-electrolysis process of the wastewater in the micro-electrolysis reaction tank 1, continuously start or intermittently start the motor 42 of the screw conveyor 4 to drive the conveying shaft 43 to drive the auger in the conveying pipe 41 to rotate. The iron-carbon packing at the bottom of the packing support hopper 3 enters the conveying pipe 41 through the feed cover 45, and then is conveyed upward to the upper part of the packing area 5 and is scattered to the top of the packing area 5 through the discharge cover 44. The iron-carbon packing outside the conveying pipe 41 gradually falls to the bottom of the packing support hopper 3 after being sucked away at the bottom, so that the iron-carbon packing realizes up-and-down circular movement in the packing area 5 through the screw conveyor 4. At the same time, as the iron-carbon packing falls, the sediment in the packing area 5 and the broken small iron-carbon packing fall through the through holes of the packing support hopper 3 and precipitate to the bottom of the micro-electrolysis reaction tank 1. After a certain period of time, the bottom mud is discharged by opening the valve of the sludge discharge port 14.

[0039] S300: During the iron-carbon micro-electrolysis process of the wastewater in the micro-electrolysis reaction tank 1 or after the iron-carbon micro-electrolysis for a period of time, open the air inlet valve connected to the air inlet 12, and introduce air into the aeration pipe 8 in the micro-electrolysis reaction tank 1 through the air inlet 12 for aeration stirring to provide sufficient dissolved oxygen for the iron-carbon micro-electrolysis reaction.

[0040] The above is only the preferred specific implementation manner of the present utility model, but the protection scope of the present utility model is not limited thereto. Any changes or substitutions that can be easily thought of by those skilled in the art within the technical scope disclosed by the present utility model should be covered within the protection scope of the present utility model. Therefore, the protection scope of the present utility model should be subject to the protection scope of the claims.

Claims

1. An anti-caking iron-carbon micro-electrolysis reactor, comprising a micro-electrolysis reaction tank (1), wherein the side walls of the lower part of the micro-electrolysis reaction tank (1) are respectively provided with a water inlet (11) and an air inlet (12), an upper part of the micro-electrolysis reaction tank (1) is provided with an overflow weir (2), and the side walls of the upper part of the micro-electrolysis reaction tank (1) are provided with a water outlet (13) connected to the lower part of the overflow weir (2); It is characterized in that A filler support bucket (3) is arranged above the water inlet (11) and the air inlet (12) in the micro-electrolysis reaction tank (1); the filler support bucket (3) is a concave plate-shaped structure and its edge is in contact with the inner wall of the micro-electrolysis reaction tank (1); a plurality of through holes are distributed on the filler support bucket (3); a filler area (5) is arranged on the filler support bucket (3) in the micro-electrolysis reaction tank (1); a spiral conveyor is vertically arranged in the middle of the upper part of the filler support bucket (3) in the micro-electrolysis reaction tank (1) The screw conveyor (4) comprises a conveying pipe (41) of the screw conveyor (4), the lower end of which extends to a bottom of a hopper close to a filler support hopper (3), the upper end of which passes through a filler area (5) upward and extends to a top of an overflow weir (2), the motor (42) of the screw conveyor (4) being fixedly arranged at the top of the micro-electrolysis reaction tank (1), the driving shaft of the motor (42) passing through the top wall of the micro-electrolysis reaction tank (1) and being connected to a conveying shaft (43) extending out of the conveying pipe (41).

2. The anti-caking iron-carbon micro-electrolysis reactor according to claim 1, characterized in that: A discharge hood (44) is fixedly provided at the top end of the conveying pipe (41); the discharge hood (44) is a trapezoidal or hemispherical convex structure with an opening facing downward; the top end outlet of the conveying pipe (41) is lower than the top end of the overflow weir (2) and higher than the highest point of the discharge hood (44).

3. The anti-caking iron-carbon micro-electrolysis reactor according to claim 2, characterized in that: An inverted "V"-shaped or hemispherical feed hood (45) opening downward is fixedly provided at the bottom end of the conveying pipe (41), and the distance between the bottom end of the feed hood (45) and the bottom of the filler support hopper (3) is greater than the particle size of the filler.

4. The anti-caking iron-carbon micro-electrolysis reactor according to claim 2, characterized in that: A plurality of support rods (46) fixedly connected to the inner wall of the micro-electrolysis reaction tank (1) are arranged at intervals on the outer wall of the delivery pipe (41).

5. The anti-caking iron-carbon micro-electrolysis reactor according to claim 2, characterized in that: The filler support bucket (3) is a mesh plate or a perforated plate, the diameter of the through holes on the filler support bucket (3) is smaller than the particle diameter of the filler, and a bracket (6) is fixedly provided at the bottom end of the filler support bucket (3), and the bracket (6) is fixedly connected to the inner wall or the bottom wall of the micro-electrolysis reaction tank (1).

6. The anti-caking iron-carbon micro-electrolysis reactor according to any one of claims 1 to 5, characterized in that: A water distribution pipe (7) is fixedly arranged below the filler support bucket (3) in the micro-electrolysis reaction tank (1), the water distribution pipe (7) is connected to the water inlet (11), and a plurality of water distribution holes are arranged at intervals on the water distribution pipe (7); an aeration pipe (8) is fixedly arranged between the filler support bucket (3) and the water distribution pipe (7) in the micro-electrolysis reaction tank (1), the aeration pipe (8) is connected to the air inlet (12), and a plurality of aerators are arranged at intervals on the aeration pipe (8).

7. The anti-caking iron-carbon micro-electrolysis reactor according to claim 6, characterized in that: A mud hopper (9) is also provided at the bottom of the micro-electrolysis reaction tank (1), and a mud discharge port (14) is provided at the bottom end of the mud hopper (9).

8. The anti-caking iron-carbon micro-electrolysis reactor according to claim 6, characterized in that: The filler in the filler area (5) is a spherical filler or an ellipsoidal filler, and an inspection port is provided on the tank top and / or the side wall of the micro-electrolysis reaction tank (1).

Images