Efficient treatment device for fluorine-containing wastewater

Abstract

The utility model provides an efficient fluorine-containing wastewater treatment device which comprises an electrolysis unit, a chemical coagulation unit and a biochemical degradation unit, and the electrolysis unit is a ruthenium-iridium electrolytic tank; the chemical coagulation unit is provided with a first-stage reaction tank, a second-stage reaction tank and a pH regulating tank, the first-stage reaction tank is a slaked lime and polyacrylamide mixed reaction tank, and the second-stage reaction tank is a calcium chloride, polyacrylamide and ferro-aluminum coagulant mixed reaction tank; the biochemical degradation unit is sequentially provided with a fluidized bed, a bioremediation tank and a sewage treatment tank, and the fluidized bed and the bioremediation tank are provided with aeration mechanisms. Through simple combination of the electrolysis unit, the chemical coagulation unit and the biochemical degradation unit, rapid and efficient treatment of the industrial fluorine-containing wastewater can be realized; the device is simple in structure, low in manufacturing cost, high in sewage treatment effect, small in dosage, low in energy consumption, low in operation cost and beneficial to popularization and application.

Description

Technical Field

[0001] The utility model belongs to the technical field of industrial wastewater treatment, and in particular relates to a high-efficiency treatment device for fluorine-containing wastewater. Background Art

[0002] Fluoride pollution refers to the environmental contamination caused by fluorine and its compounds. It primarily originates from emissions from aluminum smelting, phosphate rock processing, phosphate fertilizer production, steel smelting, and coal combustion. Hydrogen fluoride and silicon tetrafluoride are the primary gaseous pollutants. Fluoride-containing wastewater from industries such as electroplating and metalworking, as well as wash water from fluoride-containing waste gas treated by scrubbing methods, can cause water pollution upon discharge. Fluoride-containing dust deposition or leaching through precipitation can contaminate soil and groundwater. Fluoride is an accumulative toxin. Plant leaves and grasses absorb fluoride. Consuming such contaminated feed can cause joint swelling, elongated hoof nails, loose bones, and even paralysis in livestock such as cattle and sheep. Excessive fluoride intake can interfere with the activity of various enzymes in the body, disrupting calcium and phosphorus metabolism and leading to symptoms such as fluorosis, including brittle teeth, plaque formation, and bone and joint deformities. Therefore, the treatment of fluoride-containing industrial wastewater is extremely important.

[0003] Patent CN209957615U discloses an iron-carbon micro-electrolysis cell and an organic fluorine-containing wastewater treatment system containing the same, which is mainly composed of an oxidation unit, a chemical defluorination unit, a biochemical treatment unit, and a deep treatment unit connected in sequence. The iron-carbon micro-electrolysis cell includes a water distribution area, a filler area, and a clean water area arranged in sequence from top to bottom, and an aeration circulation cylinder arranged in sequence through the water distribution area, the filler area, and the clean water area. The iron-carbon micro-electrolysis cell uses micro-electrolysis fillers filled in the filler area to treat the organic fluorine in the wastewater without electricity, thereby ensuring the long-term stable operation of micro-electrolysis treatment of industrial wastewater containing organic fluorine. In addition, the organic fluorine-containing wastewater treatment system containing the iron-carbon micro-electrolysis cell deeply treats pollutants such as fluoride, organic matter, and suspended solids in the wastewater by orderly physical, chemical, and biochemical treatment of the organic fluorine-containing wastewater, greatly improving the purification efficiency and degree of treatment of organic fluorine-containing wastewater. However, the processing steps are complicated, the equipment cost is high, the processing cycle is long, and the processing cost is high. Utility Model Content

[0004] The utility model provides a high-efficiency treatment device for fluorine-containing wastewater, which can effectively solve the above problems.

[0005] The utility model is achieved in this way:

[0006] A high-efficiency treatment device for fluorine-containing wastewater comprises an electrolysis unit, a chemical coagulation unit and a biochemical degradation unit, wherein the electrolysis unit is a ruthenium-iridium electrolysis cell; the chemical coagulation unit is provided with a primary reaction cell, a secondary reaction cell and a pH adjustment cell, the primary reaction cell is a mixed reaction cell of slaked lime and polyacrylamide, and the secondary reaction cell is a mixed reaction cell of calcium chloride, polyacrylamide and an aluminum-iron coagulant; the biochemical degradation unit is provided with a fluidized bed, a bioremediation cell and a sewage treatment cell in sequence, and the biochemical degradation unit is provided with an aeration mechanism.

[0007] As a further improvement, the ruthenium-iridium motor of the ruthenium-iridium electrolytic cell is composed of two metals: nail and iridium.

[0008] As a further improvement, the electrolysis unit, chemical coagulation unit and biochemical degradation unit are connected in sequence.

[0009] As a further improvement, the iron-aluminum coagulant is a nanocoagulant.

[0010] As a further improvement, the molar amounts of iron and aluminum in the iron-aluminum coagulant are the same.

[0011] As a further improvement, the fluidized bed is a reaction chamber enclosed by a grid-like outer wall, a carrier filler for microorganisms to attach is suspended in the reaction chamber, and the aeration mechanism is arranged at the bottom of the reaction chamber.

[0012] As a further improvement, the bioremediation tank includes biowax, and the biowax is suspended in the bioremediation tank.

[0013] As a further improvement, the sewage treatment tank is connected to an anaerobic tank, a facultative aerobic tank, an aerobic tank and a sedimentation tank in sequence through pipelines.

[0014] As a further improvement, the anaerobic tank, facultative aerobic tank, aerobic tank and sedimentation tank are filled with bio-bricks, and the aerobic tank and facultative aerobic tank are provided with active fillers.

[0015] As a further improvement, the sewage treatment tank is provided with two partitions, which divide the tank into an anaerobic tank, a facultative aerobic tank, an aerobic tank and a sedimentation tank. The partition is a sealing plate, so that an aerobic tank is formed between the two partitions, and the aeration mechanism is provided at the lower part of the aerobic tank; the upper ends of the two partitions are provided with notches or mesh plates, so that anaerobic tanks and facultative aerobic tanks are formed on both sides of the sewage treatment tank, the upper part connected to the aerobic tank is the facultative aerobic tank, and the lower part is the anaerobic tank; below the aeration mechanism and the anaerobic tank is a sedimentation tank, the side of the anaerobic tank is provided with a water inlet, and the side of the aerobic tank is provided with a water outlet.

[0016] As a further improvement, the bio-bricks are fixed or hoisted in the sewage treatment tank, and the active fillers are dispersed in the aerobic tank and the facultative aerobic tank.

[0017] The beneficial effects of the present invention are as follows: the present application can realize fast and efficient treatment of industrial fluorine-containing wastewater through a simple combination of an electrolysis unit, a chemical coagulation unit and a biochemical degradation unit; the device has a simple structure, fewer treatment steps, low construction cost, high sewage treatment effect, small amount of drugs used, low energy consumption, low operating cost, and is conducive to promotion and application. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following is a brief introduction to the drawings required for use in the embodiments. It should be understood that the following drawings only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without creative work.

[0019] Figure 1 This is a structural diagram of an embodiment of a high-efficiency treatment device for fluorine-containing wastewater provided by the utility model;

[0020] Figure 2 This is a schematic diagram of the fluidized bed structure provided by an embodiment of a high-efficiency fluorine-containing wastewater treatment device of the utility model;

[0021] Figure 3 This is a top view of a fluidized bed provided by an embodiment of a highly efficient fluorine-containing wastewater treatment device of the utility model;

[0022] Figure 4 This is a schematic diagram of the structure of a bioremediation pool provided by an embodiment of a high-efficiency fluorine-containing wastewater treatment device of the utility model;

[0023] Figure 5 This is a schematic diagram of the structure of a sewage treatment pool provided by an embodiment of a high-efficiency treatment device for fluorine-containing wastewater of the utility model;

[0024] Figure 6 This is a schematic diagram of the internal structure of a sewage treatment pool provided by an embodiment of the utility model, which is a high-efficiency treatment device for fluorine-containing wastewater.

[0025] Reference numerals:

[0026] Electrolysis unit 1; chemical coagulation unit 2; primary reaction tank 21; secondary reaction tank 22; pH adjustment tank 23; biochemical degradation unit 3; fluidized bed 31; grid-shaped outer wall 311; ribs 3111; reaction chamber 312; carrier filler 313; inner ring 3131; middle ring 3132; outer ring 3133; bioremediation tank 32; biowax 321; sewage treatment tank 33; anaerobic tank 331; water inlet 3311; facultative aerobic tank 332; aerobic tank 333; water outlet 3331; sedimentation tank 334; biobrick 335; active filler 336; partition 337; notch or mesh plate 338; guide plate 339; aeration mechanism 34. DETAILED DESCRIPTION

[0027] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention. Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the utility model for which protection is claimed, but merely represents selected embodiments of the present invention.

[0028] In the description of this utility model, the terms "first" and "second" are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the number of the technical features indicated. Therefore, a feature specified as "first" or "second" may explicitly or implicitly include one or more of such features. In the description of this utility model, "plurality" means two or more, unless otherwise specifically specified.

[0029] In the description of the present invention, the terms "upper", "middle", "side", "side", "upper side", "end", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as limitations on the present invention.

[0030] Reference Figure 1-6 As shown, a high-efficiency treatment device for fluorine-containing wastewater includes an electrolysis unit 1, a chemical coagulation unit 2 and a biochemical degradation unit 3, wherein the electrolysis unit 1 is a ruthenium-iridium electrolysis cell; the chemical coagulation unit 2 is provided with a primary reaction tank 21, a secondary reaction tank 22 and a pH adjustment tank 23, wherein the primary reaction tank 21 is a mixed reaction tank of slaked lime and polyacrylamide, and the secondary reaction tank 22 is a mixed reaction tank of calcium chloride, polyacrylamide and aluminum-iron coagulant; the biochemical degradation unit 3 is provided with a fluidized bed 31, a bioremediation tank 32 and a sewage treatment tank 33 in sequence, and the biochemical degradation unit 3 is provided with an aeration mechanism 34.

[0031] The fluoride-containing wastewater is first electrolyzed in a ruthenium-iridium electrolytic cell to form fluoride ions for subsequent treatment; the wastewater is then condensed in a chemical condensation unit 2 to remove most of the fluoride-containing wastewater; after pH adjustment, it enters the biochemical degradation unit 3, where the wastewater is further quickly treated by biodegradation to ensure that the wastewater meets discharge requirements.

[0032] Calcium chloride is a colorless, odorless chemical with strong hygroscopicity and solubility. During wastewater defluoridation, calcium chloride combines with fluoride to form calcium fluoride, thereby removing fluoride ions from the water. The fluoride removal rate is related to the amount of calcium chloride added. Generally, 1 gram of calcium chloride per liter of water removes 0.5 mg of fluoride ions. Calcium chloride is highly effective and suitable for wastewater defluoridation, and it is also inexpensive and easy to use.

[0033] Quicklime is a strong alkaline flocculant. In addition to regulating the pH value in wastewater, it also has excellent flocculation and precipitation functions. The main pollutants removed by quicklime in wastewater with excessive fluoride are calcium fluoride and hydrogen fluoride. Among them, hydrogen fluoride is a strongly acidic compound that can react with quicklime (calcium hydroxide) to neutralize and form an insoluble substance, calcium fluoride precipitate. When the pH value rises to about 7-8 after the addition of lime, the total fluoride content in the wastewater can be reduced to about 10 mg / L. At this time, the appropriate addition of coagulant aids such as polypropylene can completely remove fluoride ions; the amount of quicklime added in fluoride-containing acidic wastewater is usually: about 1.47 mg of quicklime is needed to remove 1 mg of fluoride. However, during use, it is usually affected by other pollutants and suspended matter in the wastewater, making the fluoride removal effect not reach the theoretical value, and it is necessary to add a certain amount of quicklime (usually about 30% excess).

[0034] Furthermore, the ruthenium-iridium electrode of the ruthenium-iridium electrolytic cell is a commonly used electrochemical electrode composed of two metals, ruthenium and iridium. It has a wide range of applications in the field of electrochemistry, mainly used in electrolysis, electrodeposition, electrochemical analysis, etc.

[0035] Ruthenium-iridium electrodes play a crucial role in the electrolysis process. They can act as either anodes or cathodes, participating in the electrolytic reaction. In an electrolytic cell, the anode facilitates oxidation reactions, while the cathode facilitates reduction reactions. The high corrosion resistance and stability of ruthenium-iridium electrodes make them a preferred electrode material, capable of withstanding high current densities and extreme operating conditions. Ruthenium-iridium electrodes also play a crucial role in electrodeposition. Electrodeposition involves the deposition of a substance on an electrode surface through the application of an electric current. In electrodeposition, ruthenium-iridium electrodes act as carriers, transferring the desired deposition material to the target surface. The high conductivity and stability of ruthenium-iridium electrodes make them ideal for electrodeposition, enabling efficient and uniform deposition. Ruthenium-iridium electrodes also play an important role in other fields. In electrochemical synthesis, ruthenium-iridium electrodes can act as catalysts, accelerating reaction rates and improving reaction efficiency.

[0036] Furthermore, the electrolysis unit 1, the chemical coagulation unit 2 and the biochemical degradation unit 3 are connected in sequence.

[0037] Furthermore, the iron-aluminum coagulant is a nanocoagulant, and the molar amounts of iron and aluminum in the iron-aluminum coagulant are the same.

[0038] Iron-aluminum composite coagulant can greatly improve the treatment effect of fluoride-containing wastewater, while using iron or aluminum alone cannot achieve the corresponding effect.

[0039] Furthermore, the fluidized bed 31 is a reaction chamber 312 enclosed by a grid-like outer wall 311 . Carrier fillers 313 for microorganisms to attach to are suspended in the reaction chamber 312 . The aeration mechanism 34 is provided at the bottom of the reaction chamber 312 .

[0040] The reaction chamber 312 is rectangular in shape and comprises a frame made of angle irons and a stainless steel mesh fixed to the angle irons. The stainless steel mesh includes a plurality of cross-arranged ribs 3111, each having a trapezoidal or wedge-shaped cross-section. The narrower end of the trapezoidal or wedge-shaped structure is located on the outer surface of the reactor. The carrier filler 313 is cylindrical and comprises an inner ring 3131, a middle ring 3132, and an outer ring 3133, which are sequentially arranged. The inner ring 3131 and the middle ring 3132, as well as the middle ring 3132 and the outer ring 3133, are connected by multiple connecting plates. The inner ring 3131 and the middle ring 3132 are each provided with multiple ridges. The outer ring 3133 has a corrugated cross-section. The aeration discs of the aeration mechanism 34 are arranged in multiple rows, with the aeration discs in adjacent rows offset.

[0041] The fluidized bed 31 uses gas or liquid to pass through a granular solid layer to put the solid particles into a suspended motion state, and to carry out a gas-solid phase reaction process or a liquid-solid phase reaction process; it has high heat transfer efficiency and is easy to maintain a uniform temperature in the bed; the fine particles can eliminate internal diffusion resistance and can fully exert the efficiency of the catalyst.

[0042] The filler within fluidized bed 31 can be aerobic biological fluidized bed 31 process, using three-dimensional hollow filler as aerobic biological carrier. The filler has a hollow structure and, during normal operation, is suspended in the water. Anaerobic bacteria grow inside the filler, producing denitrification and removing nitrogen; aerobic bacteria grow outside, removing organic matter. Nitrification and denitrification occur simultaneously throughout the treatment process.

[0043] Furthermore, the bioremediation pool 32 includes biowax 321 , and the biowax 321 is suspended in the bioremediation pool 32 .

[0044] The slow-release effect of Bio-wax 321 can achieve long-lasting and effective sewage treatment, provide necessary microorganisms and nutrients, and slowly release trace elements.

[0045] Furthermore, the sewage treatment tank 33 is connected to an anaerobic tank 331 , a facultative aerobic tank 332 , an aerobic tank 333 and a sedimentation tank 334 in sequence through pipelines.

[0046] Realize the cultivation of different microorganisms and improve the sewage treatment effect.

[0047] Furthermore, the anaerobic tank 331 , the facultative aerobic tank 332 , the aerobic tank 333 and the sedimentation tank 334 are filled with bio-bricks 335 , and the aerobic tank 333 and the facultative aerobic tank 332 are provided with active fillers 336 .

[0048] The biobricks 335 and the active fillers 336 can provide the microorganisms with necessary nutrients.

[0049] Furthermore, the sewage treatment tank 33 is divided into an anaerobic tank 331, a facultative aerobic tank 332, an aerobic tank 333, and a sedimentation tank 334 by two partitions 337. The partitions 337 are sealing plates, forming the aerobic tank 333 between the two partitions 337. The aeration mechanism 34 is located below the aerobic tank 333. A notch or mesh 338 is provided at the upper ends of the two partitions 337, forming the anaerobic tank 331 and the facultative aerobic tank 332 on either side of the sewage treatment tank 33. The upper portion connecting to the aerobic tank 333 forms the facultative aerobic tank 332, while the lower portion forms the anaerobic tank 331. Below the aeration mechanism 34 and the anaerobic tank 331 is the sedimentation tank 334. The anaerobic tank 331 has a water inlet 3311 on its side, and the aerobic tank 333 has a water outlet 3331 on its side. A guide plate 339 is provided at the notch or mesh 338.

[0050] Sewage enters through the inlets 3311 of the anaerobic tanks 331 on either side, then flows upward through the facultative aerobic tanks 332. Because the facultative aerobic tanks 332 are located between the anaerobic and aerobic tanks, a gap or mesh plate 338 is provided between the two, providing a trace amount of oxygen for the facultative aerobic tanks 332, creating a facultative aerobic space. Finally, the sewage passes through the gap or mesh plate 338 and enters the aerobic tanks 333, where aeration mechanisms 34 provide ample oxygen. Finally, the treated water flows out of the outlets 3331 on the sides of the aerobic tanks 333. Sediment formed in the sewage treatment tanks 33 is collected and processed in the sedimentation tank 334 below.

[0051] Furthermore, the bio-bricks 335 are fixed or hoisted in the sewage treatment tank 33 , and the active fillers 336 are dispersed in the aerobic tank 333 and the facultative aerobic tank 332 .

[0052] Biobricks 335 allow organisms in the water to attach and grow. Active filler 336 contains microorganisms or microorganisms that aid in wastewater purification. The slow-release biobricks 335 provide a carbon source and also slow down the water flow. The slow-release biobricks 335 can be positioned at an acute or obtuse angle to the water flow, causing the incoming water to flow or rotate at a certain angle, thereby fully mixing with the substances in the sewage treatment tank 33 and completing the purification process. The aeration mechanism 34 can be oriented parallel to the slow-release biobricks 335, ensuring sufficient contact between the aerated liquid and the slow-release biobricks 335.

[0053] Active filler 336 is a filler containing microorganisms or microorganisms that are beneficial for sewage cleaning. Active filler 336 is a new type of bioactive carrier. It uses a scientific formula, based on the different properties of sewage, to integrate a variety of trace elements that promote the rapid attachment and growth of microorganisms into a polymer material. It is modified and constructed through a special process. It has the advantages of large specific surface area, good hydrophilicity, high biological activity, rapid biofilm formation, good treatment effect, and long service life.

[0054] The sewage treatment tank 33 comprises an anaerobic tank 331, a facultative oxic tank 332, an aerobic tank 333, and a sedimentation tank 334, interconnected by pipelines. Each tank is filled with bio-bricks 335, and the aerobic and facultative oxic tanks 333 and 332 are equipped with active fillers 336. Anaerobic treatment technology is suitable for treating high-concentration organic wastewater and has gradually become a core method for environmental protection and resource utilization. Facultative oxic treatment technology can achieve high absolute organic matter removal through anaerobic treatment and high organic matter removal rates through aerobic treatment, thereby improving overall organic matter treatment efficiency. Facultative oxic microorganisms can decompose large organic molecules in the wastewater into easily biodegradable small organic molecules, improving the biodegradability of the wastewater, creating conditions for subsequent aerobic treatment, and enhancing the overall effectiveness of biochemical treatment.

[0055] The microorganisms responsible for anaerobic biological treatment are primarily bacteria, which can be divided into two major categories: non-methanogenic bacteria (acidogenic bacteria) and methanogenic bacteria. Non-methanogenic bacteria primarily consist of obligate anaerobes and facultative anaerobes, encompassing approximately 18 genera and over 50 species. The former primarily include genera such as Clostridium, Bacteroides, Bifidobacterium, Corynebacterium, and Actinomyces. The latter primarily include genera such as Proteus, Pseudomonas, Bacillus, Streptococcus, Flavobacterium, Pseudomonas, and Aerobacter.

[0056] Facultative aerobic microorganisms play a significant role in anaerobic processes. Their isolation and screening methods are simple, making them relatively easy to scale up and apply. Therefore, utilizing facultative microorganisms to enhance anaerobic treatment processes holds great promise. It offers the following advantages: It opens up new approaches to treating medium- and high-concentration organic wastewater. Generally, aerobic methods can only treat wastewater with a COD of less than 1000 mg / L. -1 Organic wastewater, anaerobic treatment COD> 10000mg·L-1 Organic wastewater, and the facultative aerobic method just fills this gap; since aerobic, facultative aerobic and anaerobic microorganisms coexist in one reaction device, through the bridge role of facultative aerobic microorganisms, oxidation, ammoniaization, nitritation, nitrification, denitrification and other reactions are carried out simultaneously in the device, which improves the oxygen utilization efficiency and reduces energy consumption; it can give full play to the respective advantages of anaerobic removal of high absolute amount of organic matter and aerobic removal rate of organic matter. Moreover, due to the hydrolysis and acidification effect in the facultative aerobic stage, some difficult-to-degrade organic matter and microbial corpses are initially decomposed, the relative molecular mass is reduced, and the biodegradability is improved. Therefore, the overall organic matter treatment efficiency is improved.

[0057] Aerobic wastewater treatment involves microorganisms primarily composed of bacteria (primarily aerobic heterotrophs) and protozoa, along with yeasts, filamentous molds, unicellular algae, rotifers, and nematodes. Bacteria account for 90% of the total microbial population, numbering approximately 108 to 109 cells / mL. They are the primary agents in removing organic pollutants from water. The most commonly found dominant species are Alcaligenes, Bacillus, Flavobacterium, Pseudomonas, and Zoogloea. Other dominant species include Achromobacter, Nocardia, Bdellovibrio, Nitrifying Bacteria, and Escherichia coli. These are all chemoheterotrophic bacteria, most of which are Gram-negative and can effectively decompose organic pollutants in wastewater.

[0058] The fluorine-containing wastewater treatment device of the present application has fewer treatment processes, less drug usage, and low energy consumption, saving 30-50% energy compared with existing fluorine-containing wastewater treatment equipment; to treat 1 ton of wastewater, the drug usage is 0.5-1kg, the energy consumption is 0.3 kWh, and the cost is about 7 cents, while the existing cost is at least 1 yuan.

[0059] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will readily appreciate that the present invention is susceptible to various modifications and variations. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A high-efficiency treatment device for fluorine-containing wastewater, characterized in that: It includes an electrolysis unit, a chemical coagulation unit and a biochemical degradation unit. The electrolysis unit is a ruthenium-iridium electrolysis cell. The chemical coagulation unit is provided with a primary reaction cell, a secondary reaction cell and a pH adjustment cell. The primary reaction cell is a mixed reaction cell of slaked lime and polyacrylamide, and the secondary reaction cell is a mixed reaction cell of calcium chloride, polyacrylamide and iron-aluminum coagulant. The biochemical degradation unit is provided with a fluidized bed, a bioremediation pool and a sewage treatment pool in sequence, and the biochemical degradation unit is provided with an aeration mechanism.

2. The high-efficiency treatment device for fluorine-containing wastewater according to claim 1, characterized in that: The ruthenium-iridium electrolytic cell comprises two metals, nail and iridium.

3. The high-efficiency treatment device for fluorine-containing wastewater according to claim 1, characterized in that: The electrolysis unit, the chemical coagulation unit and the biochemical degradation unit are connected in sequence.

4. The high-efficiency treatment device for fluorine-containing wastewater according to claim 1, characterized in that: The iron-aluminum coagulant is a nano-coagulant, and the molar amounts of iron and aluminum in the iron-aluminum coagulant are the same.

5. The high-efficiency treatment device for fluorine-containing wastewater according to claim 1, characterized in that: The fluidized bed is a reaction chamber surrounded by a grid-shaped outer wall. Carrier fillers for microorganisms to attach are suspended in the reaction chamber, and the aeration mechanism is arranged at the bottom of the reaction chamber.

6. The high-efficiency treatment device for fluorine-containing wastewater according to claim 1, characterized in that: The bioremediation pool includes biowax, which is suspended in the bioremediation pool.

7. The high-efficiency treatment device for fluorine-containing wastewater according to claim 1, characterized in that: The sewage treatment pool is an anaerobic pool, a facultative aerobic pool, an aerobic pool and a sedimentation pool which are connected in sequence through pipelines.

8. The high-efficiency treatment device for fluorine-containing wastewater according to claim 7, characterized in that: The anaerobic tank, the facultative aerobic tank, the aerobic tank and the sedimentation tank are filled with biological bricks, and the aerobic tank and the facultative aerobic tank are provided with active fillers.

9. The high-efficiency treatment device for fluorine-containing wastewater according to claim 7, characterized in that: The sewage treatment tank is provided with two partitions, which divide the tank into an anaerobic tank, a facultative aerobic tank, an aerobic tank and a sedimentation tank. The partition is a sealing plate, so that an aerobic tank is formed between the two partitions, and the aeration mechanism is provided at the lower part of the aerobic tank; the upper ends of the two partitions are provided with notches or mesh plates, so that anaerobic tanks and facultative aerobic tanks are formed on both sides of the sewage treatment tank, the upper part connected to the aerobic tank is the facultative aerobic tank, and the lower part is the anaerobic tank; below the aeration mechanism and the anaerobic tank is a sedimentation tank, the side of the anaerobic tank is provided with a water inlet, and the side of the aerobic tank is provided with a water outlet.

10. The high-efficiency treatment device for fluorine-containing wastewater according to claim 8, characterized in that: The bio-bricks are fixed or hoisted in the sewage treatment pool, and the active fillers are dispersed in the aerobic pool and the facultative aerobic pool.

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