Anti-hardening iron-carbon micro-electrolysis tank device

Abstract

The utility model discloses an anti-hardening iron-carbon micro-electrolysis tank device which is characterized by comprising a power mechanism, an air return pipe, an annular coke water distribution layer, iron-carbon micro-electrolysis filler, a coke foam isolation layer, an activated carbon filter layer, a water outlet and a pressure balancer. According to the internal structural design of the device, a mixing pipe for mixing sewage and acid and a water distribution pipe are arranged at the lower end of the iron-carbon micro-electrolysis tank, and a water outlet of the water distribution pipe is wrapped by coke filler. And the middle part is filled with iron-carbon micro-electrolysis filler layers and coke foam isolating layers which are alternately overlapped. A row of holes are uniformly distributed in the water distribution pipe in the electrolysis tank horizontally towards the direction of the central axis of the iron-carbon micro-electrolysis tank, and are wrapped by an annular coke filler water distribution layer; the pressure balancer, the air return pipe and the aeration fan meet the requirement that the electrolysis tank can carry out aeration stirring on high-concentration organic sewage with acidity, high chroma and the like for treatment under the closed condition, and meanwhile it is guaranteed that the iron-carbon micro-electrolysis tank device operates in a low-oxygen environment. The problem that traditional equipment is prone to hardening is solved.

Description

Technical Field

[0001] The utility model relates to wastewater treatment technology, in particular to an iron-carbon micro-electrolysis tank device for treating industrial wastewater such as printing and dyeing wastewater, pharmaceutical wastewater, pesticide wastewater, petrochemical wastewater, etc., in particular to an anti-caking iron-carbon micro-electrolysis tank device. Background Art

[0002] Traditional printing and dyeing wastewater treatment technologies are mainly divided into physical, chemical and biological methods. These methods have their own advantages and disadvantages, and usually need to be used in combination to improve treatment efficiency and reduce costs. The physical method mainly removes suspended matter and colloids through adsorption; the chemical method destroys the complex molecular structure of organic matter and improves the biodegradability of wastewater; and the biological method uses microorganisms to degrade small molecular organic matter. Despite this, a single treatment method is often difficult to meet the requirements for wastewater discharge, so deep treatment becomes necessary.

[0003] Among many wastewater pretreatment technologies, iron-carbon micro-electrolysis technology is widely used due to its unique treatment effect. This technology uses a micro-electrolysis cell composed of iron (Fe) and carbon (C) to effectively treat wastewater through galvanic cell reaction, redox reaction, flocculation and adsorption precipitation effect. In this process, refractory organic matter is decomposed into small molecular organic matter that is easily biodegradable. At the same time, iron ions act as flocculants to further purify water quality.

[0004] However, there are significant technical difficulties in the engineering application of iron-carbon micro-electrolysis technology, mainly the phenomenon of filler hardening and passivation. With the long-term operation of the equipment, the iron-carbon filler will become hardened and deposited at the bottom of the equipment, which not only reduces the treatment efficiency, but also may cause equipment blockage, greatly affecting the wastewater treatment effect. In addition, the replacement of fillers is difficult and time-consuming, resulting in many devices being abandoned after a short period of operation.

[0005] Therefore, the existing technology needs to be improved to solve the problem of easy compaction of iron-carbon fillers, ensure the continuous and effective operation of micro-electrolysis equipment, and improve the wastewater treatment efficiency and equipment life. This demand has spawned the development demand for anti-caking iron-carbon micro-electrolysis tank devices, which can effectively prevent filler compaction, reduce maintenance difficulties, and extend the equipment operation cycle. Utility Model Content

[0006] The present invention aims to provide an anti-caking iron-carbon micro-electrolysis tank device, the purposes of which include:

[0007] 1. Solve the problem of easy compaction of iron-carbon fillers, ensure the continuous and effective operation of micro-electrolysis equipment, and improve wastewater treatment efficiency and equipment service life.

[0008] 2. Through advanced water flow design, the sewage is first physically adsorbed by the activated carbon filler layer, and then fully contacted with the iron-carbon filler. The treatment efficiency and water purification effect are improved through the optimized iron-carbon micro-electrolysis filler layer and coke foam isolation layer. The self-cleaning function of the water flow also helps to prevent the filler from caking, further improving the treatment quality.

[0009] 3. The design of the iron-carbon micro-electrolysis tank includes an elliptical cavity with a concave bottom, which is connected to the aerator through an aeration pipe, effectively promoting the deposition of iron sludge and precipitated iron filings in the cavity, simplifying the cleaning process, avoiding the common iron sludge blockage problem, and ensuring the stable and continuous operation of the equipment.

[0010] In order to achieve the above purpose, the utility model proposes the following technical solutions:

[0011] The anti-caking iron-carbon micro-electrolysis tank device comprises a tank body, a sewage inlet pipe, a control gate valve; a water inlet and outlet, a mixing pipe, a water distribution pipe, a power mechanism, an air return pipeline, an iron-carbon micro-electrolysis filler layer, a water inlet and outlet, and a water outlet collector, and is characterized in that: a sewage mixing pipe is fixed on the left and right sides of the lower interior of the iron-carbon micro-electrolysis tank, a water inlet, a sewage inlet pipe gate valve, and a sewage inlet pipe are serially connected on the left side of the exterior of the sewage mixing pipe, an acid inlet pipe port is serially connected on the right side, the acid inlet pipe port is connected to an acid pipe valve, and the acid pipe valve is connected to an acid pipe, the other side of the sewage mixing pipe is vertically sealed and fixed in the iron-carbon micro-electrolysis tank, and is connected to a water distribution pipe, a row of holes are evenly distributed on the water distribution pipe horizontally toward the central axis direction of the iron-carbon micro-electrolysis tank, and the holes are wrapped by an annular coke filler water distribution layer;

[0012] The bottom of the iron-carbon micro-electrolysis tank is a concave semi-spherical cavity, which is sealed and fixed by an aeration pipe opening, the aeration pipe opening is connected to an aerator inside the iron-carbon micro-electrolysis tank, and the aeration pipe opening is connected to an aeration pipe valve and an aeration fan in sequence at the lower outlet outside the iron-carbon micro-electrolysis tank;

[0013] An anti-corrosion grate is provided at the bottom of the middle part of the iron-carbon micro-electrolysis tank, on which iron-carbon micro-electrolysis filler layers and coke foam isolation layers are alternately stacked, the top layer is the iron-carbon micro-electrolysis filler layer, the lower layer of the activated carbon filter layer to 5-10 cm is the middle of the outlet water collector, the upper layer of the activated carbon filter layer is flush with the weir of the upper end of the outlet water collector, the top of the iron-carbon micro-electrolysis tank is a closed cover, the closed cover is a raised semi-spherical cavity, the top of the closed cover is sealed and fixedly connected to a pressure balancer, and is sealed and penetrated by the pressure balancer, and the pressure balancer is sealed and fixed inside the iron-carbon micro-electrolysis tank. Part of it is connected with the debubbler, the pressure balancer extends to the middle part of the outside of the iron-carbon micro-electrolysis tank and is connected with the return air pipe, the aeration fan is connected with the pressure balancer through the vertical return air pipe, the sewage mixing pipe and the water distribution pipe in the iron-carbon micro-electrolysis tank are respectively annular tubes with rectangular cross-sections, which are horizontally placed and fixed inside the tank body, and the sewage mixing pipe is sealed and connected with the water inlet and the acid inlet respectively; one side of the four sides of the mixing pipe and the water distribution pipe cross-section share a sealed connection, and there are two openings at the connection as internal communication channels between the mixing pipe and the water distribution pipe, and the channel is the connecting port.

[0014] The angle between the connecting ends of the sewage inlet pipe and the acid pipe is 180°.

[0015] The internal connecting channel connection between the sewage mixing pipe and the water distribution pipe in the iron-carbon micro-electrolysis tank is a rectangular opening channel, and the four sides of the opening are sealed. The lengths of the four sides are: the horizontal length is 3-5 cm, and the vertical direction is the same as the width of the common part of the mixing pipe and the water distribution pipe. There is a water outlet with a diameter of 3-8 mm on the water distribution pipe. The water outlet is on the side of the water distribution pipe facing the central axis of the tank body and is evenly arranged in a single row horizontally.

[0016] The connecting pipe between the aeration pipe opening and the aeration pipe valve is at an angle of 90 degrees; the aeration fan, the aeration pipe valve and the aeration pipe opening are connected in sequence through the return air pipe.

[0017] A water outlet collector is provided above the water distribution pipes on both sides of the iron-carbon micro-electrolysis tank. The water outlet collector is connected to the sewage outlet and penetrates the iron-carbon micro-electrolysis tank, and seals and connects the sewage outlet gate valve and the sewage outlet pipe in sequence.

[0018] The aerator is circular, and the ratio of its radius to the radius of the iron-carbon micro-electrolysis tank is set to 1:2. The aerator is sleeved 10-30 cm below the inner cavity of the annular coke water distribution layer, and the thickness of the annular coke water distribution layer is 10-15 cm.

[0019] The iron-carbon micro-electrolysis filler layers and the coke foam isolation layers are stacked alternately, and 5 or 7 layers are stacked.

[0020] Compared with the prior art, the beneficial effects achieved by the utility model are:

[0021] 1. Structural optimization and innovation: The device uses an electrolytic cathode and anode and a catalyst to form an iron-carbon filler with a skeleton alloy structure through high-temperature sintering. The structured filler is easy to operate and maintain and has a long service life. It only needs to be regularly added with iron-carbon micro-electrolytic filler without frequent replacement. This greatly reduces maintenance costs and downtime, and improves the economic benefits of the equipment.

[0022] 2. Environmental protection and efficiency improvement: By setting up a fixed spiral aerator, not only the oxygenation degree and mixing and stirring strength in the device are improved, the reaction rate is accelerated, and the sewage and the iron-carbon micro-electrolysis filler are fully mixed and reacted, which improves the treatment effect of the micro-electrolysis reaction on wastewater. In addition, the device can recycle the gas generated in the tube and the remaining gas, effectively preventing the leakage of polluted gas and reducing secondary pollution to the environment. At the same time, it ensures that the iron-carbon micro-electrolysis reaction is carried out in a low-oxygen environment and reduces the generation of trivalent iron ions in the tank.

[0023] 3. Improve wastewater treatment efficiency and purification effect: Sewage first enters the activated carbon filler layer through the water distribution pipe for physical adsorption, and then evenly distributes water to fully contact the iron-carbon filler, passing through the alternating iron-carbon micro-electrolysis filler layer and coke foam isolation layer in the middle of the iron-carbon micro-electrolysis tank, effectively improving the wastewater treatment efficiency and purification effect. The water flow design also helps the iron-carbon filler to self-clean, avoiding the problem of hardening and further improving the water quality.

[0024] Solve the problem of iron mud clogging: The bottom of the iron-carbon micro-electrolysis tank is designed as a concave circular cavity, which is penetrated by an aeration pipe. The aeration pipe is connected to the aerator inside the tank, which effectively allows the iron mud and precipitated iron filings generated during the reaction to settle in the cavity, thereby solving the problem of iron mud clogging the reactor. This design simplifies the cleaning process and ensures the stable operation of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 This is a schematic diagram of the overall front section structure of the embodiment of the utility model

[0026] Figure 2 This is a schematic diagram of the AA section and bottom view of the utility model embodiment

[0027] In the figure: 1. sewage inlet pipe; 2. sewage inlet pipe gate valve; 3. water inlet; 4. sewage mixing pipe; 5. water distribution pipe; 6. aeration fan; 7. aeration pipe valve; 8. aeration pipe outlet; 9. aerator; 10. acid pipe; 11. acid pipe valve; 12. acid inlet pipe outlet; 13. annular coke water distribution layer; 14. return air pipe; 15. iron-carbon micro-electrolysis packing layer; 16. coke foam isolation layer; 17. sewage outlet pipe; 18. sewage outlet gate valve; 19. sewage outlet; 20. outlet water collector; 21. activated carbon filter layer; 22. defoamer; 23. pressure balancer; 24. iron-carbon micro-electrolysis tank; 25. connection port; 26. closing cover; 27. anti-corrosion grate; B. wastewater to be treated; C. acid. DETAILED DESCRIPTION

[0028] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0029] Example 1 Figure 1-2 As shown, this anti-caking iron-carbon micro-electrolysis tank device includes a tank body, a sewage inlet pipe, a control gate valve; a water inlet and outlet, a mixing pipe, a water distribution pipe, a power mechanism, a return air pipeline, an iron-carbon micro-electrolysis filler layer, a water inlet and outlet, and a water outlet collector, characterized in that: a sewage mixing pipe 4 is fixed on the left and right sides of the lower interior of the iron-carbon micro-electrolysis tank 24, a water inlet 3, a sewage inlet pipe gate valve 2, and a sewage inlet pipe 1 are connected in series on the left side of the exterior of the sewage mixing pipe 4, an acid inlet pipe port 12 is connected in series on the right side, the acid inlet pipe port 12 is connected to an acid pipe valve 11, and the acid pipe valve 11 is connected to an acid pipe 10, the other side of the sewage mixing pipe 4 is vertically sealed and fixed in the iron-carbon micro-electrolysis tank 24, and is connected to a water distribution pipe 5, and the water distribution pipe 5 has a row of holes evenly distributed horizontally toward the central axis direction of the iron-carbon micro-electrolysis tank 24, and the holes are wrapped by an annular coke filler water distribution layer 13;

[0030] The bottom of the iron-carbon micro-electrolysis tank 24 is a concave semi-spherical cavity, and is sealed and fixedly penetrated by an aeration pipe mouth 8. The aeration pipe mouth 8 is connected to an aerator 9 inside the iron-carbon micro-electrolysis tank 24. The aerator 9 is a fixed spiral blowing structure. The aeration pipe mouth 8 is connected to an aeration pipe valve 7 and an aeration fan 6 in sequence at the lower outlet outside the iron-carbon micro-electrolysis tank 24, so that the sewage and acid are fully mixed to meet the stable operation of the iron-carbon micro-electrolysis sewage treatment.

[0031] An anti-corrosion grate 27 is provided at the bottom of the middle part of the iron-carbon micro-electrolysis tank 24, on which iron-carbon micro-electrolysis filler layers 15 and coke foam isolation layers 16 are alternately stacked. The top layer is the iron-carbon micro-electrolysis filler layer 15. The lower layer of the activated carbon filter layer 21 to 5-10 cm is the middle part of the outlet water collector 20. The upper layer of the activated carbon filter layer 21 is flush with the weir of the upper end of the outlet water collector 20. The sewage passes through the activated carbon filter layer 21, and the sewage is adsorbed again to further improve the outlet water quality. The top of the iron-carbon micro-electrolysis tank 24 is a closed cover 26, which is a raised semi-spherical cavity. The top of the closed cover 26 is sealed and fixedly connected to a pressure balancer 23, and is sealed and penetrated by the pressure balancer 23. The part of the pressure balancer 23 sealed and fixed inside the iron-carbon micro-electrolysis tank 24 is connected to the debubbler 22, and the pressure balancer 23 extends to the middle part of the outside of the iron-carbon micro-electrolysis tank 24 and is connected to the return air pipe 14. The aeration fan 6 is connected to the pressure balancer 23 through the vertical return air pipe 14. There is a safety valve on the top of the pressure balancer 23 to keep the pressure in the tank balanced. During the treatment process, the remaining gas gathers in the upper cavity and is recycled through an external pipeline to reduce pollution to the environmental gas, while ensuring that the gas applied to the sewage by the aerator 9 is a low-oxygen gas. The sewage mixing pipe 4 and the water distribution pipe 5 in the iron-carbon micro-electrolysis tank 24 are respectively annular tubes with rectangular cross-sections, placed horizontally and fixed inside the tank body, and the sewage mixing pipe 4 is sealed and connected with the water inlet 3 and the acid inlet pipe 12 respectively; one side of the four sides of the cross-section of the mixing pipe 4 and the water distribution pipe 5 is sealed and connected in common, and there are two openings at the connection as internal communication channels between the mixing pipe 4 and the water distribution pipe 5, and the channel is the connection port 25.

[0032] Embodiment 2 is based on Embodiment 1 and requires that the angle between the connecting ends of the sewage inlet pipe 1 and the acid pipe 10 is 180°, so that when the acid enters, it can be more fully mixed with the sewage, thereby reducing the footprint of the environmental protection equipment.

[0033] Example 3 requires, based on Example 1, that the internal connecting channel connection port 25 between the sewage mixing pipe 4 and the water distribution pipe 5 in the iron-carbon micro-electrolysis tank 24 is a rectangular opening channel, and the four sides of the opening are sealed. The lengths of the four sides are: the horizontal length is 3-6 cm, and the vertical direction is the same as the width of the common part of the mixing pipe 4 and the water distribution pipe 5. There is a water outlet with a diameter of 3-8 mm on the water distribution pipe 5, and the water outlet is on the side of the water distribution pipe 5 facing the central axis of the tank body, and is evenly arranged horizontally in a single row.

[0034] Embodiment 4 requires, based on Embodiment 1, that the connecting pipe between the aeration pipe opening 8 and the aeration pipe valve 7 is at an angle of 90°; and the aeration fan 6, the aeration pipe valve 7 and the aeration pipe opening 8 are connected in sequence through the return air pipe 14.

[0035] Example 5 requires, based on Example 1, that a water outlet collector 20 is provided above the water distribution pipes 5 on both sides of the iron-carbon micro-electrolysis tank 24, and the water outlet collector 20 is connected to the sewage outlet 19 to penetrate the iron-carbon micro-electrolysis tank 24, and seals and connects the sewage outlet gate valve 18 and the sewage outlet pipe 17 in sequence.

[0036] Example 6 requires, based on Example 1, that the aerator 9 is circular, and the ratio of its radius to the radius of the iron-carbon micro-electrolysis tank 24 is set to 1:2, and the aerator 9 is sleeved at 10-30 cm below the inner cavity of the annular coke water layer 13, and the thickness of the annular coke water layer 13 is 10-15 cm. The combination of the structures of Example 1 and Example 6 allows the water flow ejected from the water outlet to directly enter the iron-carbon filler area, and the water flow can drive the movement of the iron-carbon filler, and play a role in flushing, mixing and stirring the iron-carbon filler, further improving the wastewater purification effect, and effectively avoiding the deposition and hardening of the iron-carbon filler.

[0037] Embodiment 7 requires, based on Embodiment 1, that the iron-carbon micro-electrolysis filler layer 15 and the coke foam isolation layer 16 are alternately stacked, and the number of stacked layers is 5 or 7.

[0038] The working principle of the above embodiment is: the treatment process of the iron-carbon micro-electrolysis reactor is: the sewage to be treated enters the sewage mixing pipe 4 from the sewage inlet pipe 1 through the water inlet 3 and is fully mixed with the acidic solution entering the acid pipe 10, and the sewage is distributed through the water flow distributor 5 and the annular coke water distribution layer 13, and the sewage passes through the iron-carbon micro-electrolysis filler layer 15 and the coke foam isolation layer 16 for purification treatment; while the water is inlet, the blower 6 passes the aeration pipe mouth 8 at the lower part of the outer body of the cylinder to pass compressed air into the iron-carbon micro-electrolysis tank, and the compressed air forms tiny bubbles through the air distribution holes on the aerator 9 and enters the iron-carbon filler area for reaction; the remaining gas is collected and recycled through the elliptical empty pipe at the top of the reactor. After the purified sewage flows into the water collector 20 from the upper activated carbon filter layer 21 of the iron-carbon micro-electrolysis reactor, it is discharged through the sewage outlet 19 at the upper part of the tank body.

[0039] The following is a functional description of the various components of this anti-caking iron-carbon micro-electrolysis tank device:

[0040] Sewage inlet pipe 1: used to transport untreated sewage to the iron-carbon micro-electrolysis tank 24 for treatment.

[0041] Sewage inlet pipe gate valve 2: controls the flow of sewage into the iron-carbon micro-electrolysis tank 24 in order to adjust the processing speed and efficiency.

[0042] Water inlet 3: the entry point for sewage to enter the iron-carbon micro-electrolysis tank 24 , connected to the sewage inlet pipe 1 and the sewage mixing pipe 4 .

[0043] The sewage mixing pipe 4 in the iron-carbon micro-electrolysis tank 24 is distributed inside the iron-carbon micro-electrolysis tank 24 and is used to evenly disperse the incoming water into the iron-carbon micro-electrolysis filler layer 15 .

[0044] Water distribution pipe 5: helps to evenly distribute the treated or to-be-treated water in the entire iron-carbon micro-electrolysis tank 24.

[0045] Aeration fan 6: Provides necessary airflow to the aeration system to promote the redox reaction of the iron-carbon micro-electrolysis filler.

[0046] Aeration pipe valve 7: controls the air flow from the aeration fan 6 to the aerator 9 to optimize the stirring and mixing effects during the reaction process.

[0047] Aeration pipe opening 8: connects the aeration system with the iron-carbon micro-electrolysis tank 24 and is a passage for air to enter the iron-carbon micro-electrolysis tank 24.

[0048] Aerator 9: Generates bubbles inside the iron-carbon micro-electrolysis tank 24, providing low-oxygen gas for uniformly stirring and mixing the sewage and acid.

[0049] Acid pipe 10: transports chemical acid reagents to the iron-carbon micro-electrolysis tank 24 to adjust the pH value or participate in chemical reactions.

[0050] Acid pipe valve 11: Control the inflow of acid reagent to accurately adjust the chemical treatment process.

[0051] Acid inlet 12: the end of the acid tube 10, used to inject the acidic reagent into the iron-carbon micro-electrolysis tank 24.

[0052] Annular coke water distribution layer 13: surrounding the outside of the iron-carbon micro-electrolysis filler layer 15, used to increase the contact area between the water flow and the filler, thereby improving the treatment efficiency.

[0053] Gas return pipe 14: used as a pipeline to provide low oxygen stirring gas and maintain the tank pressure.

[0054] The iron-carbon micro-electrolysis filler layer 15 : iron and carbon sintered material is the core material of the iron-carbon micro-electrolysis tank 24 for treating sewage.

[0055] Coke foam isolation layer 16: located between the packing layers to prevent direct contact between the packings and reduce the phenomenon of compaction.

[0056] Sewage outlet pipe 17: It is used to export treated water from the iron-carbon micro-electrolysis tank 24.

[0057] Sewage outlet gate valve 18: Controls the water flow rate to ensure that the water outlet speed matches the treatment requirements.

[0058] Sewage outlet 19: The final discharge point of the treated water in this section.

[0059] Outlet water collector 20: collects the treated water and guides it to the outlet pipe.

[0060] Activated carbon filter layer 21: used to absorb residual organic matter and pollutants to further purify water quality.

[0061] Defoamer 22: Reduces the foam generated during micro-electrolysis to prevent excessive foaming from affecting operation.

[0062] Pressure balancer 23: maintains pressure balance inside and outside the iron-carbon micro-electrolysis tank 24 to prevent equipment damage caused by pressure changes.

[0063] Iron-carbon micro-electrolysis tank 24: used to contain iron-carbon filler and conduct water treatment reaction. Its structural design supports a multi-layer filtration system, including an activated carbon layer and a coke foam isolation layer 16, which optimizes the removal efficiency of pollutants. The concave design of the tank bottom helps to collect sediment and reduce clogging.

[0064] The connection port 25 between the sewage mixing pipe 4 and the water distribution pipe 5: This connection port 25 is responsible for mixing the sewage and acid in the iron-carbon micro-electrolysis tank 24 and evenly distributing them into the tank, ensuring sufficient mixing of the sewage and acid, which affects the effect and efficiency of the entire water treatment process.

[0065] Closing cover 26: plays a sealing and fixing role.

[0066] Anti-corrosion grate 27: plays a fixing role.

[0067] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art may still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. An anti-caking iron-carbon micro-electrolysis tank device, which includes a tank body, a sewage inlet pipe, a control gate valve; a water inlet and outlet, a mixing pipe, a water distribution pipe, a power mechanism, a return air pipeline, an iron-carbon micro-electrolysis packing layer, a water inlet and outlet, and a water outlet collector, characterized in that: A sewage mixing pipe (4) is fixed on the left and right sides of the lower interior of the iron-carbon micro-electrolysis tank (24); a water inlet (3), a sewage inlet pipe gate valve (2), and a sewage inlet pipe (1) are connected in series on the left side of the sewage mixing pipe (4); an acid inlet pipe opening (12) is connected in series on the right side; the acid inlet pipe opening (12) is connected to an acid pipe valve (11), and the acid pipe valve (11) is connected to an acid pipe (10); the other side of the sewage mixing pipe (4) is vertically sealed and fixed in the iron-carbon micro-electrolysis tank (24) and is connected to a water distribution pipe (5); the water distribution pipe (5) has a row of holes evenly distributed horizontally toward the central axis of the iron-carbon micro-electrolysis tank (24), and the holes are wrapped by an annular coke filler water distribution layer (13); The bottom of the iron-carbon micro-electrolysis tank (24) is a concave semi-spherical cavity, and is sealed and fixedly penetrated by an aeration pipe opening (8); the aeration pipe opening (8) is connected to an aerator (9) inside the iron-carbon micro-electrolysis tank (24); and the aeration pipe opening (8) is connected to an aeration pipe valve (7) and an aeration fan (6) in sequence at a lower outlet outside the iron-carbon micro-electrolysis tank (24); The bottom of the middle part of the iron-carbon micro-electrolysis tank (24) is provided with an anti-corrosion grate (27), and the anti-corrosion grate (27) is alternately stacked with an iron-carbon micro-electrolysis filler layer (15) and a coke foam isolation layer (16), the top layer is the iron-carbon micro-electrolysis filler layer (15), the lower layer of the activated carbon filter layer (21) to 5-10 cm is the middle part of the water outlet water collector (20), the upper layer of the activated carbon filter layer (21) is flush with the weir of the upper end of the water outlet water collector (20), the top of the iron-carbon micro-electrolysis tank (24) is a closed cover (26), the closed cover (26) is a raised semi-spherical cavity, the top of the closed cover (26) is sealed and fixedly connected to a pressure balancer (23), and is sealed and penetrated by the pressure balancer (23), and the pressure balancer (23) is sealed and fixed to the iron-carbon micro-electrolysis tank (24). ) is connected to the debubbler (22), the pressure balancer (23) extends to the middle part of the outside of the iron-carbon micro-electrolysis tank (24) and is connected to the return air pipe (14), the aeration fan (6) is connected to the pressure balancer (23) through the vertical return air pipe (14), the sewage mixing pipe (4) and the water distribution pipe (5) in the iron-carbon micro-electrolysis tank (24) are respectively annular pipes with rectangular cross-sections, horizontally placed and fixed inside the tank body, and the sewage mixing pipe (4) is respectively connected to the water inlet (3) and the acid inlet pipe (12) in a sealed manner; one side of the four sides of the mixing pipe (4) and the water distribution pipe (5) is sealed and connected, and there are two openings at the connection point as internal communication channels between the mixing pipe (4) and the water distribution pipe (5), and the channel is the connection port (25).

2. The anti-caking iron-carbon micro-electrolysis tank device according to claim 1 is characterized in that: The angle between the connection ends of the sewage inlet pipe (1) and the acid pipe (10) is 180°.

3. The anti-caking iron-carbon micro-electrolysis tank device according to claim 1 is characterized in that: The internal communication channel connection port (25) between the sewage mixing pipe (4) and the water distribution pipe (5) in the iron-carbon micro-electrolysis tank (24) is a rectangular opening channel, and the four sides of the opening are sealed. The lengths of the four sides are: the horizontal length is selected to be 3-5 cm, and the vertical direction is the same as the width of the common part of the mixing pipe (4) and the water distribution pipe (5). There is a water outlet with a diameter of 3-8 mm on the water distribution pipe (5). The water outlet is on the side of the water distribution pipe (5) facing the central axis of the tank body and is evenly arranged in a single row horizontally.

4. The anti-caking iron-carbon micro-electrolysis tank device according to claim 1 is characterized in that: The connecting pipe between the aeration pipe opening (8) and the aeration pipe valve (7) is at an angle of 90°; the aeration fan (6), the aeration pipe valve (7) and the aeration pipe opening (8) are connected in sequence through the return air pipe (14).

5. The anti-caking iron-carbon micro-electrolysis tank device according to claim 1 is characterized in that: A water outlet collector (20) is provided above the water distribution pipes (5) on both sides of the iron-carbon micro-electrolysis tank (24). The water outlet collector (20) is connected to the sewage outlet (19), penetrates the iron-carbon micro-electrolysis tank (24), and seals and connects the sewage outlet gate valve (18) and the sewage outlet pipe (17) in sequence.

6. The anti-caking iron-carbon micro-electrolysis tank device according to claim 1 is characterized in that: The aerator (9) is circular, and the ratio of its radius to the radius of the iron-carbon micro-electrolysis tank (24) is set to 1:

2. The aerator (9) is sleeved at 10-30 cm below the inner cavity of the annular coke water distribution layer (13), and the thickness of the annular coke water distribution layer (13) is 10-15 cm.

7. The anti-caking iron-carbon micro-electrolysis tank device according to claim 1 is characterized in that: The iron-carbon micro-electrolysis filler layer (15) and the coke foam isolation layer (16) are alternately stacked, and the stacked layers are selected to be 5 or 7 layers.

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