Waste water defluorination device

Abstract

The utility model provides a waste water defluorination device. The waste water defluorination device comprises a waste water collection tank, a sedimentation tank, a filtering tank, a pH regulating tank and a multifunctional reactor which are communicated in sequence, the alkali washing object collecting tank, the standard water collecting tank and the fluoride collecting tank are respectively communicated with the multifunctional reactor; wherein the multifunctional reactor comprises a reactor main body, and further comprises a waste water inlet pipe, an alkali liquor inlet pipe, a charging pipe, a material collecting pipe, a first water discharging pipe and a second water discharging pipe which are communicated with the reactor main body, the waste water inlet pipe is communicated with the pH adjusting tank, and the material collecting pipe is communicated with the alkali washing object collecting tank; the first drainage pipe is communicated with the standard water collecting tank, and the second drainage pipe is communicated with the fluoride collecting tank. According to the utility model, continuous wastewater treatment can be realized without interruption, the treatment efficiency is improved, the operation is simple, the manual intervention is reduced, and the operation cost is reduced. And due to the integrated design, the space is saved, and the whole device is more compact.

Description

Technical Field

[0001] The utility model relates to the technical field of water treatment, in particular to a wastewater defluorination device. Background Art

[0002] A large amount of fluoride-containing wastewater is generated during the production process of chemical, metallurgical and new energy enterprises. This type of fluoride-containing wastewater is highly corrosive, hardens soil and farmland, and has a serious impact on the ecological environment and human health. Therefore, wastewater defluorination faces important challenges. Related devices have been applied on the market, mainly adding reagents to the defluorination equipment to separate the purified liquid and defluorination residue.

[0003] Patent CN104843818A discloses a method and device for defluorination of fluorine-containing wastewater, which adsorbs fluorine in fluorine-containing wastewater by filling chelating resin on the partition of the reaction tower. After the adsorption is completed, the water inlet is closed, and AlCl3 liquid is injected for elution and regeneration. The process of defluorination and regeneration is completed in a reaction tower, and the discontinuity of production is caused by frequent liquid replacement and resin in and out operations. Patent CN108821385A discloses a defluorination device using hydroxymagnesium aluminum oxide as a reagent, including two stages of barrels equipped with filter elements, and wastewater flows through them in turn to be purified. These two devices are also two typical types of defluorination reactors at present. The former is intermittent adsorption-backwashing in a set of reactors, and the latter is to complete adsorption in a reactor, and the adsorbent is taken out for processing. Both have the problem of being unable to process continuously and inconvenient in feeding and discharging materials. Utility Model Content

[0004] Therefore, in order to overcome at least some of the defects and shortcomings of the prior art, the embodiments of the present utility model propose a wastewater defluorination device to solve the shortcomings of the existing wastewater defluorination device, such as the inability to continuously treat wastewater and the inconvenience of material input and output.

[0005] A wastewater defluorination device proposed in an embodiment of the utility model includes: a wastewater collection tank, a sedimentation tank, a filtration tank, a pH adjustment tank and a multifunctional reactor connected in sequence; and an alkali washing material collection tank, a standard water collection tank and a fluoride collection tank, which are respectively connected to the multifunctional reactor; wherein the multifunctional reactor includes a reactor body, and the multifunctional reactor also includes a wastewater inlet pipe, an alkali liquid inlet pipe, a feeding pipe, a collecting pipe, a first drain pipe and a second drain pipe connected to the reactor body, the wastewater inlet pipe is connected to the pH adjustment tank, the collecting pipe is connected to the alkali washing material collection tank, the first drain pipe is connected to the standard water collection tank, and the second drain pipe is connected to the fluoride collection tank.

[0006] In one embodiment of the present invention, a steam outlet is also provided on the reactor body.

[0007] In one embodiment of the utility model, the multifunctional reactor also includes an inclined bottom plate, the bottom plate having a first end and a second end opposite to each other, the distance between the second end and the top of the reactor body is greater than the distance between the first end and the top of the reactor body, and the collecting pipe is arranged close to the second end.

[0008] In one embodiment of the present invention, the multifunctional reactor further comprises a bracket, the bracket is arranged on a side of the bottom plate away from the top of the reactor body, and the bracket is used to support the bottom plate.

[0009] In one embodiment of the present invention, the multifunctional reactor further comprises: a temperature sensor, wherein the temperature sensor is disposed on the reactor body and connected to an external display device.

[0010] In one embodiment of the utility model, the multifunctional reactor further comprises a flushing port connected to the reactor body, the flushing port is arranged on the side wall of the reactor body, and the flushing port is located on one side of the first end close to the top of the reactor body.

[0011] In one embodiment of the present invention, the multifunctional reactor further comprises: a heater, and the heater is arranged on one side of the bottom plate close to the top of the reactor body.

[0012] In one embodiment of the utility model, the multifunctional reactor also includes: an agitator, which is arranged near the top of the reactor body, and the agitator includes: a stirring rod, extending from the top of the reactor body to the bottom of the reactor body; and a stirring brush, which is connected to one end of the stirring rod near the bottom of the reactor body.

[0013] In one embodiment of the present invention, the stirring brush is a propeller structure.

[0014] In one embodiment of the present invention, a filter is provided in the second drain pipe.

[0015] It can be seen from the above that the above technical features of the utility model can have the following beneficial effects:

[0016] The present embodiment is provided with a wastewater collection tank, a sedimentation tank, a filtration tank, a pH adjustment tank, and a multifunctional reactor which are connected in sequence, and the multifunctional reactor is connected to the alkali-washed material collection tank, the qualified water collection tank, and the fluoride collection tank, respectively, so that the present device can realize continuous wastewater treatment, including precipitation, filtration, pH adjustment, defluorination reaction, etc., without interruption, and improves the treatment efficiency, and is simple to operate, reduces manual intervention, and reduces the operating cost. And the integrated design saves space, making the whole device more compact. In addition, the collected material in the alkali-washed material collection tank can be recycled, for example, alkali-washed zirconium sulfate is used as a defluorinating agent, and the zirconium fluoride generated after the alkali-washed zirconium sulfate and the fluorine-containing wastewater are subjected to defluorination reaction, the alkali liquor enters the reactor body of the multifunctional reactor through the alkali liquor inlet pipe, and the zirconium fluoride is backwashed, and the obtained zirconium dioxide is collected in the alkali-washed material collection tank through the collecting pipe, and sulfuric acid is added to the alkali-washed material collection tank to obtain the regenerated alkali-washed zirconium sulfate, and the regenerated alkali-washed zirconium sulfate can be applied to the defluorination of fluorine-containing wastewater, reducing the waste of resources, and having better economic and environmental benefits. Furthermore, the fluoride solution collected in the fluoride collection pool can be processed for recycling, thus reducing environmental pollution. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0018] Figure 1 A system block diagram of a wastewater defluorination device provided in an embodiment of the utility model.

[0019] Figure 2 for Figure 1 The schematic diagram of the structure of the multifunctional reactor in the wastewater defluorination device is shown.

[0020] [Description of Reference Numerals]

[0021] 100: wastewater collection tank; 200: sedimentation tank; 300: filtration tank; 400: pH adjustment tank; 500: multifunctional reactor; 501: temperature sensor; 502: heater; 504: flushing port; 505: reactor body; 506: agitator; 507: stirring rod; 508: stirring brush; 510: wastewater inlet pipe; 520: alkali liquid inlet pipe; 530: feeding pipe; 540: collecting pipe; 550: first drain pipe; 560: second drain pipe; 570: steam outlet; 580: bottom plate; 581: first end; 582: second end; 590: bracket; 600: alkali washing material collection tank; 700: qualified water collection tank; 800: fluoride collection tank. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] The embodiment of the utility model provides a wastewater defluorination device, which is suitable for continuous wastewater treatment without interruption, improves treatment efficiency, is easy to operate, reduces manual intervention, and reduces operating costs. The integrated design of the wastewater defluorination device saves space, making the entire device more compact and suitable for applications of various sizes. This application is described by taking the defluorination agent as an alkaline washed zirconium sulfate material as an example.

[0024] like Figure 1 and Figure 2 As shown, the wastewater defluorination device provided by the embodiment of the utility model includes, for example, a wastewater collection tank 100, a sedimentation tank 200, a filtration tank 300, a pH adjustment tank 400, a multifunctional reactor 500, an alkali washing material collection tank 600, a qualified water collection tank 700 and a fluoride collection tank 800.

[0025] Specifically, the wastewater collection tank 100, the sedimentation tank 200, the filtration tank 300, the pH adjustment tank 400, and the multifunctional reactor 500 are sequentially connected through pipelines and valves can be set accordingly to achieve the function of adjusting the flow rate or opening and closing, which is not limited here. The multifunctional reactor 500 is, for example, connected to the alkali washing collection tank 600, the qualified water collection tank 700, and the fluoride collection tank 800 through pipelines.

[0026] Among them, the multifunctional reactor 500, for example, includes a reactor body 505, a wastewater inlet pipe 510, an alkali solution inlet pipe 520, a feeding pipe 530, a collecting pipe 540, a first drain pipe 550 and a second drain pipe 560. The wastewater inlet pipe 510, the alkali solution inlet pipe 520, the feeding pipe 530, the collecting pipe 540, the first drain pipe 550 and the second drain pipe 560 are respectively connected to the reactor body 505, and the wastewater inlet pipe 510 is connected to the pH adjustment tank 400, the collecting pipe 540 is connected to the alkali washing material collection tank 600, the first drain pipe 550 is connected to the qualified water collection tank 700, and the second drain pipe 560 is connected to the fluoride collection tank 800.

[0027] Among them, the wastewater collection tank 100 is used, for example, to collect fluorine-containing wastewater or other types of fluorine-containing wastewater in industrial production to prepare for subsequent treatment. The sedimentation tank 200 is used, for example, to remove large particle impurities in the wastewater to reduce the burden of subsequent treatment. The filter tank 300 is used, for example, to further remove suspended solids and other impurities in the wastewater to improve the cleanliness of the fluorine-containing wastewater. The pH adjustment tank 400 is used, for example, to adjust the pH value of the fluorine-containing wastewater. Specifically, the pH value of the wastewater can be adjusted by adding acid or alkali to optimize the conditions of subsequent chemical reactions. Taking the defluorination agent as an alkaline washed zirconium sulfate material as an example, acid or alkali needs to be added to adjust the pH value of the fluorine-containing wastewater to 3 to 12. In other embodiments, the pH value range can be set according to the type of defluorination agent added, which is not specifically limited here. The multifunctional reactor 500 is used to perform defluorination reaction and backwash treatment on fluorine-containing wastewater. The multifunctional reactor 500 includes multiple pipes for passing wastewater, adding alkali solution, adding defluorination agent, draining water, etc. The alkaline washing collection tank 600 is used to collect fluoride-containing solids generated during the backwashing process, which can be further processed and utilized. The qualified water collection tank 700 is used to collect water that meets the discharge standards after treatment, which can be safely discharged or used for other purposes. The fluoride collection tank 800 is used to collect fluoride-containing solutions, which can be further processed and recycled.

[0028] The wastewater defluorination device provided by the embodiment of the utility model can realize continuous wastewater treatment, including precipitation, filtration, pH adjustment, defluorination reaction, etc., without interruption, by setting a wastewater collection pool 100, a sedimentation pool 200, a filtration pool 300, a pH adjustment pool 400, and a multifunctional reactor 500 which are connected in sequence, and the multifunctional reactor 500 is respectively connected to an alkali washing collection pool 600, a qualified water collection pool 700, and a fluoride collection pool 800, so that the wastewater defluorination device can realize continuous wastewater treatment, including precipitation, filtration, pH adjustment, defluorination reaction, etc., without interruption, thereby improving treatment efficiency, and being simple to operate, reducing manual intervention, and reducing operating costs. In addition, the integrated design saves space, making the entire device more compact. In addition, the collected materials in the alkali-washed material collection tank 600 can be recycled, for example, alkali-washed zirconium sulfate is used as a defluorinating agent, and zirconium fluoride is generated after the alkali-washed zirconium sulfate and fluorine-containing wastewater undergo defluorination reaction. The alkali solution enters the reactor body 505 of the multifunctional reactor 500 through the alkali solution inlet pipe 520, and the zirconium fluoride is backwashed. The obtained zirconium dioxide is collected in the alkali-washed material collection tank 600 through the collecting pipe 540. Sulfuric acid is added to the alkali-washed material collection tank 600 to obtain regenerated alkali-washed zirconium sulfate. The regenerated alkali-washed zirconium sulfate can be used for defluorination of fluorine-containing wastewater, which reduces resource waste and has better economic and environmental benefits. The fluoride solution collected in the fluoride collection tank 800 can be processed for recycling, which reduces environmental pollution.

[0029] In order to remove fluorine from fluorine-containing wastewater, alkaline-washed zirconium sulfate is used as a defluorinating agent to react with fluorine-containing wastewater. During the defluorination reaction, alkaline-washed zirconium sulfate reacts chemically with fluorine in the fluorine-containing wastewater, and the generated products include, for example, zirconium fluoride (ZrF4) or other fluorine-containing composite salts. Alkaline solution is added to zirconium fluoride for backwashing treatment, and the products generated by the backwashing treatment include, for example, zirconium dioxide and fluoride solution. Zirconium dioxide can be acidified and transformed with sulfuric acid to generate regenerated alkaline-washed zirconium sulfate, and the fluoride solution can be further treated for recycling.

[0030] like Figure 2 As shown, the reactor body 505 is also provided with a steam outlet 570, which is, for example, an exhaust port opened at the top of the reactor body 505, or a steam pipe provided at the top of the reactor body 505. The steam outlet 570 is used to discharge steam and ensure the balance of internal and external pressures of the gas in the reactor body 505.

[0031] In some embodiments, the steam outlet 570 and the wastewater inlet pipe 510 are installed on the left side of the upper end of the reactor body 505, and the steam outlet 570 is on the top, the feeding pipe 530 and the alkali liquid inlet pipe 520 are installed on the right side of the upper end of the reactor body 505, and the feeding pipe 530 is on the top, and the feeding pipe 530 is, for example, set to an angle of inclination greater than 30 degrees relative to the side wall of the reactor body 505. Preferably, the feeding pipe 530 is, for example, set to an angle of inclination of 45 degrees relative to the side wall of the reactor body 505, so that the feeding is more convenient. The collecting pipe 540, the first drain pipe 550 and the second drain pipe 560 are, for example, arranged near the bottom of the reactor body 505. The first drain pipe 550 and the second drain pipe 560 can be, for example, two drain ports opened on one drain pipe, or the first drain pipe 550 and the second drain pipe 560 can be, for example, two separately arranged drain pipes, which are not specifically limited here. Of course, in other embodiments, the positions of the steam outlet 570 and the wastewater inlet pipe 510, the alkali solution inlet pipe 520, the feeding pipe 530, the collecting pipe 540, the first drain pipe 550 and the second drain pipe 560 can be set according to the specific structure of the wastewater defluorination device, and are not specifically limited here.

[0032] Specifically, the multifunctional reactor 500 further includes, for example, an inclined bottom plate 580, the bottom plate 580 having a first end 581 and a second end 582 relative to each other, the first end 581 being, for example, higher than the second end 582, the distance between the second end 582 and the top of the reactor body 505 being greater than the distance between the first end 581 and the top of the reactor body 505, and the collecting pipe 540 being arranged near the second end 582. The inclined bottom plate 580 can help the sediment (such as solid particles such as zirconium fluoride) or solution in the reactor body 505 to be concentrated along the first end 581 of the bottom plate 580 to the second end 582, so as to facilitate collection. And when the reactor body 505 needs to be emptied or cleaned, the inclined bottom plate 580 helps water or other liquids flow to the drain faster, reduces residual liquid, and improves the emptying efficiency.

[0033] Specifically, the multifunctional reactor 500 further includes a bracket 590 , which is disposed on a side of the bottom plate 580 away from the top of the reactor body 505 . The bracket 590 is used to support the bottom plate 580 , and provides stable support for the bottom plate 580 .

[0034] Specifically, the multifunctional reactor 500 further includes a temperature sensor 501, which is disposed on the reactor body 505, and the temperature sensor 501 is connected to an external display device. In the multifunctional reactor 500, the temperature sensor 501 is a device for monitoring the internal temperature of the reactor body 505. The temperature sensor is, for example, a thermistor sensor, a thermocouple sensor, etc., which is used to provide real-time data of the internal temperature of the reactor body 505 and display it on an externally connected device, so as to help accurately control the temperature in the reactor body 505, which is conducive to the internal chemical reaction of the reactor body 505. The temperature sensor 501 is connected to an external display device, so that the operator can view the temperature inside the reactor in real time on a control panel or a monitoring system, which is very important for ensuring the smooth progress of the entire defluorination process and the control of product quality.

[0035] Specifically, the multifunctional reactor 500 further includes a flushing port 504 connected to the reactor body 505, the flushing port 504 is arranged on the side wall of the reactor body 505, and the flushing port 504 is located on the side of the first end 581 close to the top of the reactor body 505. The flushing port 504 is used to connect an external water supply device, such as a high-pressure water gun, to supply water to the reactor body 505, which can help collect sediment or remove residual reactants, sediment or other impurities.

[0036] Specifically, the multifunctional reactor 500 further includes a heater 502, which is disposed on one side of the bottom plate 580 near the top of the reactor body 505. The heater 502 is, for example, an existing electric heater, and the heater 502 is used to ensure that the chemical reaction occurring in the reactor body 505 is carried out at a desired temperature.

[0037] Specifically, the multifunctional reactor 500 further includes, for example, an agitator 506, which is disposed near the top of the reactor body 505, and includes, for example, a stirring rod 507 and a stirring brush 508. The stirring rod 507 extends, for example, from the top of the reactor body 505 to the bottom of the reactor body 505, and the stirring brush 508 is connected, for example, to one end of the stirring rod 507 near the bottom of the reactor body 505. The agitator 506 is used, for example, to stir the reactants in the reactor body 505 so that the chemical reaction in the reactor body 505 is fully carried out.

[0038] Specifically, the stirring brush 508 is, for example, a propeller-type structure. The propeller-type stirring brush 508 can more effectively mix the substances in the reactor, and the spiral shape helps to form a strong vortex, thereby accelerating the mixing between the reactants.

[0039] Specifically, a filter element is provided in the second drain pipe 560. The filter element is, for example, a filter membrane for solid-liquid separation.

[0040] In a specific embodiment of the present invention, the working process of the integrated defluorination device is as follows:

[0041] First, the fluorine-containing wastewater with a fluorine content of 300 mg / L is collected in the wastewater collection tank 100, and is subjected to preliminary precipitation in the sedimentation tank 200, preliminary filtration in the filtration tank 300, and adjustment in the pH adjustment tank 400 in sequence, so that the fluorine-containing wastewater is preliminarily treated, and then the preliminarily treated fluorine-containing wastewater is introduced into the multifunctional reactor 500 through the wastewater inlet pipe 510, and the prepared basic zirconium sulfate material is introduced into the multifunctional reactor 500 through the feeding pipe 530. Since the device itself generates heat by friction during operation, when the temperature displayed on the temperature sensor 501 reaches the optimal reaction temperature range, which is 25 to 80° C. here, the stirrer 506 is started to allow the wastewater to fully react with the basic zirconium sulfate material. The reaction time of the defluorination reaction is, for example, 10 to 120 minutes. The products generated by the defluorination reaction include, for example, zirconium fluoride or other fluorine-containing composite salts. After the reaction time is reached, the stirrer 506 is stopped to allow the substances in the multifunctional reactor 500 to be completely precipitated. During this period, the steam outlet 570 can be opened to prevent the imbalance of internal and external air pressure caused by heating or water vapor. After precipitation, the first drain pipe 550 is opened to discharge the defluorinated wastewater along the first drain pipe 550 to the qualified water collection pool 700. The fluorine content of the water in the qualified water collection pool 700 is 27 mg / L after testing, and the defluorination rate is as high as more than 90%. Among them, the defluorinated water can be sampled and tested to determine whether the fluorine content of the water discharged from the first drain pipe 550 meets the standard, or a fluorine content detector can be installed to determine whether the fluorine content of the water discharged from the first drain pipe 550 meets the standard. There is no specific limitation here.

[0042] After the qualified wastewater is discharged, the first drain pipe 550 is closed, the alkali solution pipe 520 is opened and alkali solution is added to backwash the zirconium fluoride in the multifunctional reactor 500 to generate zirconium dioxide solid and fluoride solution. The alkali solution can be, for example, one or more of KOH, NaOH, and NH3·H2O. After the alkali solution is added, the heater 502 is started. When the temperature displayed on the temperature sensor 501 reaches the optimal temperature range for the reaction, the optimal temperature range here is, for example, 40 to 90°C, the agitator 506 is started to allow the alkali solution to fully react with the defluorination slag. The backwashing time is, for example, 10 to 120 minutes. After the reaction time is reached, the agitator 506 and the heater 502 are stopped to allow the zirconium dioxide solid in the multifunctional reactor 500 to completely precipitate. After precipitation, the second drain pipe 560 is opened, and after filtering through the filter element in the second drain pipe 560, the fluoride solution enters the fluoride collection tank 800. At this time, only zirconium dioxide solid remains in the reactor body 505 , and the collecting pipe 540 , the agitator 506 and the flushing port 504 are opened, and the flushing port 504 flushes water into the reactor body 505 to flush the zirconium dioxide into the alkali washing material collection tank 600 through the collecting pipe 540 .

[0043] Then, sulfuric acid is added to the alkali-washed material collection tank 600, so that zirconium dioxide and sulfuric acid undergo an acidification transformation reaction under certain conditions to obtain a regenerated alkali-washed zirconium sulfate material. The obtained regenerated alkali-washed zirconium sulfate material is introduced into the multifunctional reactor 500, thereby realizing the regeneration and utilization of the defluorinating agent (alkali-washed zirconium sulfate material).

[0044] It should be noted that alkaline-washed zirconium sulfate, as an effective defluoridation agent, can react with fluoride in wastewater to defluorinate, thereby achieving defluorination of fluorine-containing wastewater, and zirconium fluoride produced by the defluorination reaction is added to alkaline solution for backwashing treatment, and the zirconium dioxide obtained by backwashing is acidified and transformed with sulfuric acid, and can be regenerated into basic zirconium sulfate. This recycling reduces the demand for new materials and reduces costs, and the entire treatment process generates less waste, which can be effectively collected and treated, reducing the impact on the environment.

[0045] In addition, it can be understood that the aforementioned embodiments are merely illustrative descriptions of the present invention. Under the premise that the technical features do not conflict, the structures do not contradict, and the purpose of the present invention is not violated, the technical solutions of the various embodiments can be arbitrarily combined and used in combination.

[0046] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the utility model.

Claims

1. A wastewater defluorination device, characterized in that: include: A wastewater collection tank (100), a sedimentation tank (200), a filtration tank (300), a pH adjustment tank (400) and a multifunctional reactor (500) connected in sequence; as well as The alkaline washing material collection pool (600), the qualified water collection pool (700) and the fluoride collection pool (800) are respectively connected to the multifunctional reactor (500); The multifunctional reactor (500) comprises a reactor body (505), and the multifunctional reactor (500) further comprises a wastewater inlet pipe (510), an alkali solution inlet pipe (520), a feeding pipe (530), a collecting pipe (540), a first drainage pipe (550) and a second drainage pipe (560) connected to the reactor body (505), the wastewater inlet pipe (510) is connected to the pH adjustment tank (400), the collecting pipe (540) is connected to the alkali washing material collection tank (600), the first drainage pipe (550) is connected to the qualified water collection tank (700), and the second drainage pipe (560) is connected to the fluoride collection tank (800).

2. The wastewater defluorination device according to claim 1, characterized in that: The reactor body (505) is also provided with a steam exhaust port (570).

3. The wastewater defluorination device according to claim 1, characterized in that: The multifunctional reactor (500) also includes an inclined bottom plate (580), wherein the bottom plate (580) has a first end (581) and a second end (582) opposite to each other, wherein the distance between the second end (582) and the top of the reactor body (505) is greater than the distance between the first end (581) and the top of the reactor body (505), and the collecting pipe (540) is arranged close to the second end (582).

4. The wastewater defluorination device according to claim 3, characterized in that: The multifunctional reactor (500) further comprises a support (590), wherein the support (590) is arranged on a side of the bottom plate (580) away from the top of the reactor body (505), and the support (590) is used to support the bottom plate (580).

5. The wastewater defluorination device according to claim 1, characterized in that: The multifunctional reactor (500) further comprises: a temperature sensor (501), wherein the temperature sensor (501) is arranged on the reactor body (505), and the temperature sensor (501) is connected to an external display device.

6. The wastewater defluorination device according to claim 3, characterized in that: The multifunctional reactor (500) further comprises a flushing port (504) connected to the reactor body (505), wherein the flushing port (504) is arranged on the side wall of the reactor body (505), and the flushing port (504) is located on one side of the first end (581) close to the top of the reactor body (505).

7. The wastewater defluorination device according to claim 3, characterized in that: The multifunctional reactor (500) further comprises: a heater (502), wherein the heater (502) is arranged on one side of the bottom plate (580) close to the top of the reactor body (505).

8. The wastewater defluorination device according to claim 1, characterized in that: The multifunctional reactor (500) further comprises: an agitator (506), wherein the agitator (506) is arranged near the top of the reactor body (505), and the agitator (506) comprises: A stirring rod (507) extending from the top of the reactor body (505) to the bottom of the reactor body (505); A stirring brush (508), wherein the stirring brush (508) is connected to one end of the stirring rod (507) close to the bottom of the reactor body (505).

9. The wastewater defluorination device according to claim 8, characterized in that: The stirring brush (508) is a propeller-type structure.

10. The wastewater defluorination device according to claim 1, characterized in that: A filter is provided inside the second drainage pipe (560).

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