Detoxification treatment device for high-salt and high-toxicity chemical synthesis wastewater by integrating electrochemistry and biological coupling technology

Abstract

The invention discloses a detoxification treatment device for high-salt and high-toxicity chemical synthesis wastewater, which is integrated with an electrochemical and biological coupling technology, and belongs to the technical field of wastewater treatment. The detoxification treatment device comprises a wastewater treatment system, and the wastewater treatment system comprises an anaerobic zone, a first anoxic zone, a second anoxic zone, an aerobic zone and a micro-aerobic-electrochemical coupling zone; an aeration device is arranged between the second anoxic zone and the aerobic zone, an aeration pipe group is arranged at the bottom of the aeration device, and the aeration pipe group comprises a connecting pipe group; the connecting pipe group comprises an aeration transverse pipe and aeration connecting pipes, and the aeration connecting pipes are connected to the two ends of the aeration transverse pipe; the eduction tube group comprises an eduction tube and an aeration disc, aeration holes are densely formed in the aeration disc, and anti-crystallization assemblies are arranged on the aeration holes; the output air pressure is increased under the condition that the aeration rate is not changed through cooperation of the adjusting valve system and the movable baffle, the air pressure is ejected out through the anti-crystallization assembly on the aeration hole to complete aeration output, and meanwhile the possibility that salt crystals and sludge enter the aeration hole is reduced.

Description

Technical Field

[0001] This invention relates to the field of wastewater treatment technology, specifically to a detoxification treatment device for high-salt and highly toxic chemical synthesis wastewater that integrates electrochemical and biological coupling technologies. Background Technology

[0002] Detoxification treatment integrating electrochemical and biological coupling technologies mostly employs a five-stage coupling process. In practice, wastewater first undergoes conventional biological treatment in an anaerobic zone, a first anoxic zone, a second anoxic zone, and an aerobic zone, completing processes such as organic matter conversion, nitrogen and phosphorus removal, etc. The effluent from the aerobic zone enters the microaerobic zone, where trace amounts of nitrogen and phosphorus are further reduced through the combined action of electrochemical reactions and microorganisms. The active substances generated by the electrochemical reactor can attack recalcitrant organic matter, while the iron ions deposited at the electrodes can promote microbial metabolism, achieving the enrichment and targeted regulation of dominant functional bacteria.

[0003] After the effluent from the second anoxic zone is piped out, it needs to be pre-oxygenated by a small aeration device to initially increase the dissolved oxygen content of the water, meeting the growth requirements of microorganisms in the aerobic zone. However, high-salt wastewater is prone to precipitating salt crystals that clog the aeration micropores, requiring the backwashing system to be activated periodically. This involves either reverse air supply via a blower or flushing the pipes with clean water to remove crystals and sludge from the membrane pores. Both reverse air supply and pipe flushing require the wastewater treatment process to be stopped before the aeration micropores can be cleaned. This cleaning operation interferes with the wastewater treatment process, and both aeration and flushing require additional power to complete the cleaning operation, resulting in higher equipment maintenance costs and inconsistent cleaning effectiveness. Summary of the Invention

[0004] The technical problem of this invention is to provide a detoxification treatment device for high-salt and highly toxic chemical synthesis wastewater that integrates electrochemical and biological coupling technologies. This device increases the output air pressure without changing the aeration rate by using a regulating valve system and movable baffles. The air pressure is pushed out through the anti-crystallization components on the aeration holes to complete the aeration output, while also reducing the possibility of salt crystallization and sludge entering the aeration holes.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a detoxification treatment device for high-salt and highly toxic chemical synthesis wastewater integrating electrochemical and biological coupling technologies, comprising a wastewater treatment system, wherein the wastewater treatment system includes an anaerobic zone, a first anoxic zone, a second anoxic zone, an aerobic zone, and a micro-aerobic-electrochemical coupling zone, wherein an aeration device is provided between the second anoxic zone and the aerobic zone, and an aeration pipe group is provided at the bottom of the aeration device, the aeration pipe group comprising: Connecting pipe assembly; the connecting pipe assembly includes an aeration horizontal pipe and an aeration connecting pipe, the aeration connecting pipe is connected to both ends of the aeration horizontal pipe, and a movable baffle and regulating valve system are provided in the middle of the aeration connecting pipe. The movable baffle and the regulating valve system can regulate the air pressure in the aeration horizontal pipe without consuming additional power. Outlet pipe assembly: The outlet pipe assembly includes an outlet pipe and an aeration disc. The aeration disc is installed at the upper end of the outlet pipe. The outlet pipe is fixedly installed at the middle position of the aeration horizontal pipe. Aeration holes are densely arranged on the aeration disc. Each aeration hole is equipped with an anti-crystallization component. The anti-crystallization component can automatically block the upper end of the aeration hole after the aeration volume decreases. The aeration pipe group consists of multiple sets of connecting pipe groups and outlet pipes, and the outlet pipes are arranged in a matrix evenly.

[0006] As a further embodiment of the present invention, the regulating valve system includes an external one-way valve, an internal one-way valve, and a check valve. External one-way valves are installed at both ends of the aeration connecting pipe, allowing gas to be input to the middle position of the aeration connecting pipe through the external one-way valves. Internal one-way valves are fixedly installed at both ends of the aeration horizontal pipe, allowing gas in the aeration connecting pipe to be input to the middle position of the aeration horizontal pipe through the internal one-way valves. The movable baffle is slidably connected to the middle position of the aeration connecting pipe. A controller is provided outside the aeration device, and the controller can control the opening and closing degree of the internal and external one-way valves.

[0007] As a further embodiment of the present invention, the anti-crystallization component includes an upper baffle plate, an inner liner, and a lower limiting ring. The upper baffle plate and the lower limiting ring are respectively disposed on the upper and lower sides of the aeration hole. An inner guide rod is connected between the upper baffle plate and the lower limiting ring. The inner guide rod passes through the aeration hole. The inner liner is a conical annular cloth. The wide end of the inner liner is fixedly connected to the upper edge of the aeration hole. The inner guide rod passes through the middle of the inner liner. Multiple sets of limiting rods are fixedly installed on the lower limiting ring. The limiting rods pass through the aeration disc and their upper ends are above the aeration disc.

[0008] As a further embodiment of the present invention, an installation ring is fixedly installed on the outer side of the aeration disc, the installation ring can be snapped onto the upper surface of the outlet pipe, the check valve is fixedly installed inside the outlet pipe, and the aerator is connected in series inside the outlet pipe.

[0009] As a further embodiment of the present invention, a threaded rod is provided between the two sets of external one-way valves, and the movable baffle is threadedly connected to the threaded rod. The movable baffle divides the two sets of external one-way valves into a left temporary air chamber and a right temporary air chamber. The movable baffle can be adjusted by translation to change the size of the left temporary air chamber and the right temporary air chamber. A rotating motor is provided inside the aeration connecting pipe. The rotating motor is a bidirectional motor and its output end is fixedly connected to the threaded rod.

[0010] As a further embodiment of the present invention, the anaerobic zone and the first anoxic zone are arranged adjacent to each other, and a low-level guide port is provided on the partition wall between the two adjacent tanks. A fine-pore filter screen is provided on the guide port, and a small stirring pump is provided in the anaerobic zone at the position corresponding to the guide port.

[0011] As a further embodiment of the present invention, a buffer zone is provided between the first anoxic zone and the second anoxic zone, and a guide plate is provided in the buffer zone. The guide plate can guide the wastewater in the first anoxic zone into the second anoxic zone. A lift pipe is provided on the second anoxic zone, and the other end of the lift pipe is located in the first anoxic zone. A flow rate monitor is provided in the buffer zone.

[0012] As a further embodiment of the present invention, the aeration device is connected in series between the second anoxic zone and the aerobic zone via a connecting conduit. A water distributor is provided in the aerobic zone. The water distributor has a porous structure that can evenly disperse wastewater to all parts of the aerobic zone. An overflow port is provided at the top of the aerobic zone. The overflow port is connected to the micro-oxygen-electrochemical coupling zone via a connecting hose.

[0013] As a further embodiment of the present invention, a flow meter and a water quality monitoring probe are installed inside the connecting hose. The water quality monitoring probe can monitor indicators such as COD and toxicity of the water entering the connecting hose. A return pipe is installed between the micro-oxygen-electrochemical coupling zone and the aerobic zone. The return pipe can guide a portion of the water back to the aerobic zone.

[0014] As a further aspect of the present invention, a blower is provided on the outside of the aeration device, and the blower is capable of inputting gas into the aeration pipe group.

[0015] Compared with the prior art, the beneficial effects of the present invention are: In this invention, the outlet pipe assembly and the connecting pipe assembly are spliced ​​together to form a transmission network, thereby allowing gas to be exported through the outlet pipe. Oxygen is output into the water body through the aeration holes on the outlet pipe. The anti-crystallization component on the aeration hole is controlled by the input gas pressure. When the input gas pressure is high enough, the anti-crystallization component rises and opens the aeration hole. When there is no gas input or the gas pressure is insufficient, the upper end of the aeration hole is blocked by the anti-crystallization component, preventing crystals generated by wastewater from entering the aeration hole. When gas is input, the high-pressure gas itself forms a protective layer of air wall at the upper end of the aeration hole, which can also prevent salt crystals and sludge in the wastewater from entering the aeration hole. This can isolate salt crystals and sludge from entering the aeration hole, avoid the blockage of crystals and sludge in the aeration hole, reduce the possibility of device maintenance and cleaning, reduce equipment maintenance costs, and prevent the equipment from stopping operation due to aeration hole blockage, thereby affecting the wastewater treatment efficiency.

[0016] In this invention, gas is input through both ends of the aeration connecting pipe under the action of a blower, then enters the aeration horizontal pipe through the aeration connecting pipe, and finally exits through the outlet pipe. In actual operation, the regulating valve system and the movable baffle work together to regulate the gas output pressure in the outlet pipe. The regulating valve system itself can adjust the gas input, and the movement of the movable baffle can adjust the size of the air chamber connecting the aeration horizontal pipe and the aeration connecting pipe by changing the position of the movable baffle when changing the power of the blowers at both ends. Thus, the gas output pressure can be changed without changing the power of the equipment, thereby ensuring the aeration volume while ensuring the aeration holes are connected. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the aeration tube assembly structure of the present invention; Figure 3 This is a cross-sectional view of the aeration horizontal pipe structure in this invention; Figure 4 This is a cross-sectional view of the structure of the outlet tube in this invention; Figure 5 This is a cross-sectional view of the aeration connecting pipe in this invention; Figure 6 This is a schematic diagram of the structure of the explosion disc in this invention; Figure 7 This is a cross-sectional view of the structure of the aeration holes in this invention under aeration conditions; Figure 8 This is a cross-sectional view of the structure of the aeration holes in the present invention under closed conditions.

[0019] The attached diagram lists the components represented by each number as follows: 1. Aeration horizontal pipe; 2. Aeration connecting pipe; 3. Aeration disc; 4. Mounting ring; 5. Anti-crystallization component; 501. Upper baffle plate; 502. Lower limit ring; 503. Limiting rod; 504. Inner guide rod; 6. Aeration hole; 7. Inner lining layer; 8. Inner one-way valve; 9. Outlet pipe; 10. Check valve; 11. Outer one-way valve; 12. Movable baffle; 13. Anaerobic zone; 14. First anoxic zone; 15. Second anoxic zone; 16. Aerobic zone; 17. Micro-oxygen-electrochemical coupling zone; 18. Lifting pipe; 19. Return pipe; 20. Aeration device. Detailed Implementation

[0020] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0021] Please see Figures 1-8 This invention provides a technical solution: a detoxification treatment device for high-salt, highly toxic chemical synthesis wastewater integrating electrochemical and biological coupling technologies, comprising a wastewater treatment system, which includes an anaerobic zone 13, a first anoxic zone 14, a second anoxic zone 15, an aerobic zone 16, and a micro-aerobic-electrochemical coupling zone 17. An aeration device 20 is provided between the second anoxic zone 15 and the aerobic zone 16, and an aeration pipe group is provided at the bottom of the aeration device 20. The aeration pipe group includes: Connecting pipe assembly; The connecting pipe assembly includes an aeration horizontal pipe 1 and an aeration connecting pipe 2. The aeration connecting pipe 2 is connected to both ends of the aeration horizontal pipe 1. A movable baffle 12 and a regulating valve system are provided in the middle of the aeration connecting pipe 2. The movable baffle 12, together with the regulating valve system, can regulate the air pressure inside the aeration horizontal pipe 1 without consuming additional electrical energy.

[0022] Outlet pipe assembly: The outlet pipe assembly includes an outlet pipe 9 and an aeration disc 3. The aeration disc 3 is installed on the upper end of the outlet pipe 9. The outlet pipe 9 is fixedly installed in the middle position of the aeration horizontal pipe 1. Aeration holes 6 are densely arranged on the aeration disc 3. Each aeration hole 6 is equipped with an anti-crystallization component 5. The anti-crystallization component 5 can automatically block the upper end of the aeration hole 6 after the aeration volume decreases.

[0023] The aeration tube assembly consists of multiple sets of connecting tubes and outlet tubes, with the outlet tubes 9 arranged in a matrix evenly.

[0024] During operation, the wastewater in this invention is treated in the anaerobic zone 13, the first anoxic zone 14, and the second anoxic zone 15. The wastewater then enters the aerobic zone 16 through the aeration device 20. The aeration device 20 rapidly increases the dissolved oxygen content of the wastewater, preventing the anoxic water from directly entering the aerobic zone 16 and causing a sudden drop in DO, which would impact the aerobic bacteria. The outlet pipe group 9 and the connecting pipe group are spliced ​​together to form a transmission network, so that gas is exported through the outlet pipe 9, and oxygen is output into the water body through the aeration holes 6 on the outlet pipe 9. The anti-crystallization component on the aeration hole 6 is controlled by the gas pressure of the input gas. When the input gas pressure is high enough, the anti-crystallization component rises and opens the aeration hole 6. When there is no gas input or the gas pressure is insufficient, the upper end of the aeration hole 6 is blocked by the anti-crystallization component, and the crystals generated by the wastewater will not enter the aeration hole 6. When there is gas input, the high-pressure gas itself forms a protective layer of air wall at the upper end of the aeration hole 6, which can also block the salt crystals and sludge in the wastewater from entering the aeration hole 6. This can prevent salt crystals and sludge from entering the aeration hole 6, avoid the situation of crystals and sludge clogging the aeration hole 6, reduce the possibility of the device needing maintenance and cleaning, reduce equipment maintenance costs, and avoid the possibility of the equipment stopping operation due to the clogging of the aeration hole 6, thereby affecting the wastewater treatment efficiency. In this invention, gas is input through both ends of the aeration connecting pipe 2 under the action of a blower, then enters the aeration horizontal pipe 1 through the aeration connecting pipe 2, and finally outputs through the outlet pipe 9. In actual operation, the regulating valve system and the movable baffle can adjust the output gas pressure in the outlet pipe 9. The regulating valve system itself can adjust the gas input, and the movement of the movable baffle can adjust the size of the air chamber connecting the aeration horizontal pipe 1 and the aeration connecting pipe 2 by adjusting the position of the movable baffle while changing the power of the blowers at both ends. Thus, the output gas pressure can be changed without changing the power of the equipment, thereby ensuring the aeration volume while keeping the aeration holes 6 connected.

[0025] As a further embodiment of the present invention, the regulating valve system includes an external one-way valve 11, an internal one-way valve 8, and a check valve 10. Both ends of the aeration connecting pipe 2 are equipped with external one-way valves 11, allowing gas to be input to the middle position of the aeration connecting pipe 2 through the external one-way valves 11. Both ends of the aeration horizontal pipe 1 are fixedly equipped with internal one-way valves 8, allowing gas in the aeration connecting pipe 2 to be input to the middle position of the aeration horizontal pipe 1 through the internal one-way valves 8. The movable baffle 12 is slidably connected to the middle position of the aeration connecting pipe 2. A controller is provided outside the aeration equipment, which can control the opening and closing degree of the internal one-way valve 8 and the external one-way valve 11.

[0026] During operation, the inner one-way valve 8 is located at both ends of the aeration horizontal pipe 1. The input amount of the aeration horizontal pipe 1 can be directly adjusted by regulating the inner one-way valve 8. The outer one-way valve 11 is installed at both ends of the aeration connecting pipe 2. The amount of gas input to the aeration connecting pipe 2 can be controlled by regulating the outer one-way valve 11. When the blower power is inconvenient, the valves of the outer one-way valve 11 and the inner one-way valve 8 are reduced, thereby reducing the amount of gas input to the aeration horizontal pipe 1 and lowering the air pressure in the outlet pipe 9. When the valves of the outer one-way valve 11 and the inner one-way valve 8 are increased, the amount of gas input to the aeration horizontal pipe 1 is increased, thereby increasing the air pressure in the outlet pipe 9.

[0027] As a further embodiment of the present invention, the anti-crystallization component 5 includes an upper baffle plate 501, an inner liner 7, and a lower limiting ring 502. The upper baffle plate 501 and the lower limiting ring 502 are respectively disposed on the upper and lower sides of the aeration hole 6. An inner guide rod 504 is connected between the upper baffle plate 501 and the lower limiting ring 502. The inner guide rod 504 passes through the aeration hole 6. The inner liner 7 is a conical annular cloth. The wide end of the inner liner 7 is fixedly connected to the upper edge of the aeration hole 6. The inner guide rod 504 passes through the middle of the inner liner 7. Multiple sets of limiting rods 503 are fixedly installed on the lower limiting ring 502. The limiting rods 503 pass through the aeration disc 3 and their upper ends are above the aeration disc 3.

[0028] During operation, in its natural state, the lower surface of the upper baffle plate 501 is positioned above the upper surface of the aeration disc 3 (e.g., ...). Figure 8 As shown), at this time, the upper baffle plate 501 blocks the upper end of the aeration hole 6. When a certain amount of air pressure is input, the upper baffle plate 501 moves upward under the action of the gas, causing the lower limit ring 502 to move upward and adhere to the lower surface of the aeration disc 3 (as shown). Figure 7 As shown), when gas is introduced, the inner liner 7 moves upward under the action of wind, causing the narrow opening to open from the bottom (as shown). Figure 8 Move to the top (e.g.) Figure 7 This allows the inner lining 7 to surround and shield the upper end of the aeration holes 6, further restricting salt crystallization and sludge from entering the interior of the aeration holes 6.

[0029] As a further embodiment of the present invention, an installation ring 4 is fixedly installed on the outer side of the aeration disc 3. The installation ring 4 can be snapped onto the upper surface of the outlet pipe 9. The check valve 10 is fixedly installed inside the outlet pipe 9, and the aerator is connected in series inside the outlet pipe 9.

[0030] During operation, the mounting ring 4 of this invention is attached to the surface of the outlet pipe 9 to facilitate the replacement of the aeration disc 3.

[0031] As a further embodiment of the present invention, a threaded rod is provided between the two sets of external one-way valves 11, and a movable baffle 12 is threadedly connected to the threaded rod. The movable baffle 12 divides the two sets of external one-way valves 11 into a left temporary air chamber and a right temporary air chamber. The movable baffle 12 can be adjusted by translating to adjust the size of the left temporary air chamber and the right temporary air chamber. A rotating motor is provided in the aeration connecting pipe 2. The rotating motor is a bidirectional motor and its output end is fixedly connected to the threaded rod.

[0032] During operation, when the movable baffle 12 is centered, the left and right temporary air chambers are the same size and are connected to the aeration horizontal pipe. When the movable baffle 2 moves to the left, the left temporary air chamber decreases while the right temporary air chamber increases. At this time, only the right temporary air chamber is connected to the aeration horizontal pipe 1. Under the condition that the blower power and the input air volume remain unchanged, the size of the connecting cavity between the aeration horizontal pipe 1 and the aeration connecting pipe 2 is reduced, thereby increasing the air pressure and ensuring that the upper baffle plate 501 moves upward to open the aeration hole 6. As a further embodiment of the present invention, the anaerobic zone 13 and the first anoxic zone 14 are arranged adjacent to each other, and a low-level guide port is provided on the partition wall between the two adjacent tanks. A fine-pore filter screen is provided on the guide port, and a small stirring pump is provided in the anaerobic zone 13 at the position corresponding to the guide port.

[0033] During operation, the anaerobic zone 13 of this invention initially decomposes highly toxic macromolecular organic matter into small-molecule organic acids, releasing phosphorus. Simultaneously, salt-tolerant anaerobic bacteria (such as *Halomonas*) are added to the anaerobic zone 13 to acclimate the bacterial community through a gradient salt increase, enabling them to tolerate the high-salt environment of the wastewater and preventing microbial cell dehydration and inactivation. The first anoxic zone 14 utilizes the small-molecule organic matter produced in the anaerobic zone 13 as a carbon source. Denitrifying bacteria reduce nitrate nitrogen to nitrogen gas, initially denitrifying while reducing wastewater toxicity. A stirring device is installed in the first anoxic zone 14 to maintain a uniform mixture, inhibit oxygen entry, ensure the denitrification reaction, and immobilize the microorganisms to enhance their resistance to toxic shocks. A small stirring pump maintains a stable water flow, preventing anaerobic sludge from settling at the connection points.

[0034] As a further embodiment of the present invention, a buffer zone is provided between the first anoxic zone 14 and the second anoxic zone 15. A guide plate is provided in the buffer zone, which can guide the wastewater in the first anoxic zone 14 into the second anoxic zone 15. A lift pipe 18 is provided on the second anoxic zone 15, and the other end of the lift pipe 18 is located in the first anoxic zone 14. A flow rate monitor is provided in the buffer zone.

[0035] During operation, the second anoxic zone 15 in this invention further enhances denitrification, removing residual nitrate nitrogen. Simultaneously, microorganisms continue to degrade incompletely decomposed toxic intermediates. Furthermore, the nitrate-containing wastewater from the preceding first anoxic zone 14 is returned via the riser pipe 18 to replenish denitrification substrate, enhancing the thoroughness of denitrification and detoxification. A flow rate monitor is installed in the connecting pipe between the first anoxic zone 14 and the second anoxic zone 15. When the flow rate is too high, the downstream valve is adjusted to slow the flow, ensuring that the microorganisms have sufficient time to degrade the toxic intermediates.

[0036] As a further embodiment of the present invention, the aeration device 20 is connected in series between the second anoxic zone 15 and the aerobic zone 16 via a connecting conduit. A water distributor is provided in the aerobic zone 16. The water distributor has a porous structure that can evenly disperse wastewater to all parts of the aerobic zone 16. An overflow port is provided at the top of the aerobic zone 16. The overflow port is connected to the micro-oxygen-electrochemical coupling zone 17 via a connecting hose.

[0037] During operation, the aeration device 20 of this invention introduces oxygen, and the wastewater enters the aerobic zone 16. The aerobic microorganisms in the aerobic zone 16 thoroughly degrade organic matter, simultaneously achieving nitrification (converting ammonia nitrogen to nitrate nitrogen) and removing some phosphorus. The aeration device 20 provides sufficient oxygen, and the anode can assist in generating active oxygen, enhancing the oxidation of recalcitrant organic matter. Combined with salt-tolerant aerobic bacteria, this accelerates pollutant decomposition. A small amount of nitrate-containing wastewater from the aerobic zone 16 is returned to the first anoxic zone 14 to replenish substrate for denitrification. A flow regulating valve is installed on the lift pipe 18 to precisely control the return ratio. Excess water can flow smoothly into the next unit through the overflow port, which also serves to regulate the water level.

[0038] As a further embodiment of the present invention, a flow meter and a water quality monitoring probe are installed inside the connecting hose. The water quality monitoring probe can monitor indicators such as COD and toxicity of the water entering the connecting hose. A return pipe 19 is provided between the micro-oxygen-electrochemical coupling zone 17 and the aerobic zone 16. The return pipe 19 can guide part of the water back to the aerobic zone 16.

[0039] During operation, the electrochemical device in this invention generates active species such as hydroxyl radicals, which degrade recalcitrant toxic substances remaining from previous processes. On the other hand, iron ions deposited at the electrodes promote microbial metabolism and enrich functional bacteria. Simultaneously, dissolved oxygen is regulated by an online DO detector to maintain a micro-oxygen environment, synergistically completing detoxification and deep nitrogen and phosphorus removal.

[0040] As a further embodiment of the present invention, a blower is provided on the outside of the aeration device 20, and the blower is capable of inputting gas into the aeration pipe group.

[0041] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A detoxification treatment device for high-salt and high-toxicity chemical synthesis wastewater by integrating electrochemical and biological coupling technologies, comprising a wastewater treatment system, characterized in that: The wastewater treatment system comprises an anaerobic zone (13), a first anoxic zone (14), a second anoxic zone (15), an aerobic zone (16) and a micro-aerobic-electrochemical coupling zone (17), an aeration device (20) is arranged between the second anoxic zone (15) and the aerobic zone (16), a group of aeration pipes is arranged at the bottom of the aeration device (20), and the group of aeration pipes comprises: a group of connecting pipes, the group of connecting pipes comprises aeration cross pipes (1) and aeration connecting pipes (2), the aeration connecting pipes (2) are connected at both ends of the aeration cross pipes (1), movable baffles (12) and a regulating valve system are arranged at the middle positions of the aeration connecting pipes (2), and the movable baffles (12) can adjust the air pressure in the aeration cross pipes (1) without additional power consumption in cooperation with the regulating valve system; a group of outlet pipes, the group of outlet pipes comprises outlet pipes (9) and aeration discs (3), the aeration discs (3) are arranged at the upper ends of the outlet pipes (9), the outlet pipes (9) are fixedly arranged at the middle positions of the aeration cross pipes (1), a large number of aeration holes (6) are arranged on the aeration discs (3), and anti-crystallization assemblies (5) are arranged on the aeration holes (6), the anti-crystallization assemblies (5) can automatically shield the upper ends of the aeration holes (6) when the aeration amount is reduced; the group of aeration pipes is composed of a plurality of groups of connecting pipes and outlet pipes, and the outlet pipes (9) are arranged in a matrix on the group of aeration pipes.

2. The device for detoxification treatment of high salt and high toxic chemical synthesis wastewater by integrated electrochemical and biological coupling technology according to claim 1, characterized in that: the regulating valve system comprises outer one-way valves (11), inner one-way valves (8) and check valves (10), the outer one-way valves (11) are arranged at both ends of the aeration connecting pipes (2), gas can be input to the middle positions of the aeration connecting pipes (2) through the outer one-way valves (11), the inner one-way valves (8) are fixedly arranged at both ends of the aeration cross pipes (1), the gas in the aeration connecting pipes (2) can be input to the middle positions of the aeration cross pipes (1) through the inner one-way valves (8), the movable baffles (12) are slidably connected to the middle positions of the aeration connecting pipes (2), and a controller is arranged outside the aeration equipment, the controller can control the opening and closing degrees of the inner one-way valves (8) and the outer one-way valves (11).

3. The device for detoxification of high salt and high toxic chemical synthesis wastewater by integrated electrochemical and biological coupling technology according to claim 2, characterized in that: the anti-crystallization assemblies (5) comprise upper valve plates (501), inner lining layers (7) and lower limiting rings (502), the upper valve plates (501) and the lower limiting rings (502) are arranged on the upper and lower sides of the aeration holes (6), the inner lead-in rods (504) are connected between the upper valve plates (501) and the lower limiting rings (502), the inner lead-in rods (504) penetrate the aeration holes (6), the inner lining layers (7) are conical annular fabrics, the wide end of the inner lining layer (7) is fixedly connected to the upper end edge of the aeration hole (6), the inner lead-in rods (504) pass through the middle of the inner lining layer (7), a plurality of limiting rods (503) are fixedly arranged on the lower limiting rings (502), the limiting rods (503) penetrate the aeration discs (3) and the upper ends of the limiting rods (503) are above the aeration discs (3).

4. The device for detoxification treatment of high salt and high toxic chemical synthesis wastewater by integrated electrochemical and biological coupling technology according to claim 3, characterized in that: The outer side of the aeration disc (3) is fixedly provided with a mounting ring (4), the mounting ring (4) can be clamped on the upper surface of the outlet pipe (9), the check valve (10) is fixedly installed in the outlet pipe (9), and the aerator is connected in series in the outlet pipe (9).

5. The device for detoxification of high salt and high toxic chemical synthesis wastewater by integrated electrochemical and biological coupling technology according to claim 4, characterized in that: Threaded rods are arranged between the two groups of outer one-way valves (11), the movable baffle (12) is threadedly connected with the threaded rods, the movable baffle (12) divides the two groups of outer one-way valves (11) into left temporary air cavities and right temporary air cavities, the movable baffle (12) can adjust the sizes of the left temporary air cavities and the right temporary air cavities by translation, and a rotating motor is arranged in the aeration connecting pipe (2), the rotating motor is a bidirectional motor, and the output end is fixedly connected with the threaded rods.

6. The device for detoxification of high salt and high toxic chemical synthesis wastewater by integrated electrochemical and biological coupling technology according to claim 1, characterized in that: The anaerobic zone (13) and the first anoxic zone (14) are arranged adjacently, low-position flow guide openings are arranged on the partition walls of the two adjacent pool bodies, a perforated screen is arranged on the flow guide opening, and a small stirring pump is arranged in the anaerobic zone (13) at a position corresponding to the flow guide opening.

7. The device for detoxification of high salt and high toxic chemical synthesis wastewater by integrated electrochemical and biological coupling technology according to claim 6, characterized in that: A buffer zone is arranged between the first anoxic zone (14) and the second anoxic zone (15), a flow guide plate is arranged in the buffer zone, the flow guide plate can guide the wastewater in the first anoxic zone (14) into the second anoxic zone (15), a lifting pipe (18) is arranged on the second anoxic zone (15), the other end of the lifting pipe (18) is located in the first anoxic zone (14), and a flow velocity monitor is arranged in the buffer zone.

8. The device for detoxification of high salt and high toxic chemical synthesis wastewater by integrated electrochemical and biological coupling technology according to claim 7, characterized in that: The aeration device (20) is connected in series between the second anoxic zone (15) and the aerobic zone (16) through a connecting pipe, a water distributor is arranged in the aerobic zone (16), the water distributor has a porous structure and can uniformly disperse the wastewater to all parts of the aerobic zone (16), an overflow opening is arranged at the top of the aerobic zone (16), and the overflow opening is connected with the micro-aerobic-electrochemical coupling zone (17) through a connecting hose.

9. The device for detoxification of high salt and high toxic chemical synthesis wastewater by integrated electrochemical and biological coupling technology according to claim 8, characterized in that: A flow meter and a water quality monitoring probe are arranged in the connecting hose, the water quality monitoring probe can monitor the COD and toxicity of the water flowing into the connecting hose, a reflux pipe (19) is arranged between the micro-aerobic-electrochemical coupling zone (17) and the aerobic zone (16), and the reflux pipe (19) can guide part of the water back to the aerobic zone (16).

10. The device for detoxification of high salt and high toxic chemical synthesis wastewater by integrated electrochemical and biological coupling technology according to claim 1, characterized in that: An air blower is arranged on the outer side of the aeration device (20), and the air blower can input gas into the aeration pipe group.

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