Coal mine fluorine-containing wastewater air flotation and fluorine removal integrated device

Abstract

The present invention relates to the technical field of coal mine fluorine-containing wastewater treatment, and discloses a coal mine fluorine-containing wastewater air flotation fluorine removal integrated apparatus, which comprises: a pump body for conveying raw water; purified water is input into the micro-nano bubble generating device, and the micro-nano bubble generating device is used for generating micro-nano bubbles through a micro-nano bubble generator; the water inlet end of the fluorine removal device is communicated with the water outlet end of the pump body, the fluorine removal device is further communicated with the output end of the micro-nano bubble generation device, and the fluorine removal device is used for inputting a sewage reactant and removing fluorine ions and impurities in the raw water through the reaction of the sewage reactant and the raw water; the slag scraping part is arranged at the upper part of the tail end of the fluorine removal device and is used for scraping impurities floating at the upper part of the fluorine removal device; the water inlet end of the water purification tank is communicated with the water outlet end of the fluorine removal device, and the water purification tank is used for storing purified water generated by the fluorine removal device. According to the invention, effective treatment of the fluorine-containing wastewater is realized.

Description

Technical Field

[0001] The present invention relates to the technical field of treatment of fluorine-containing wastewater in coal mines, and in particular to an integrated device for flotation and defluorination of fluorine-containing wastewater in coal mines. Background Art

[0002] During the coal mining process, a large amount of fluorine-containing wastewater is produced. If this wastewater is discharged directly without treatment, it will cause serious pollution to the environment.

[0003] In the existing technology, the concentration distribution of fluoride ions in mine water is often uneven, which leads to the need to adopt different treatment methods for different concentrations of fluoride ions during the treatment process, increasing the complexity of the treatment technology. At present, many defluoridation methods have the problems of high energy consumption, large amount of reagent consumption and high equipment investment. How to reduce the treatment cost is the key to technology research and development. Some defluoridation technologies, such as coagulation sedimentation and adsorption methods, may produce wastewater or waste materials. How to control the treatment of these wastes and avoid secondary pollution is an urgent problem to be solved. At the same time, with the requirements for the recycling of coal mine wastewater, the water quality entering the comprehensive utilization pipeline network must meet the three water quality indicators in the "Surface Water Environmental Quality Standard" GB 3838-2002. For low concentrations of fluoride in mine water, traditional treatment methods may not be effective, and it is necessary to study new and efficient defluoridation technologies.

[0004] Therefore, it is necessary to provide an integrated device for flotation defluorination of fluorine-containing wastewater in coal mines to solve the problems existing in the above-mentioned prior art. Summary of the Invention

[0005] In view of this, the present invention proposes an integrated device for flotation and defluorination of fluorine-containing wastewater in coal mines, aiming to solve the problems existing in the above-mentioned prior art.

[0006] The present invention proposes an integrated device for flotation defluorination of fluorine-containing wastewater in coal mines, comprising: Pump body, used for conveying raw water; A micro-nano bubble generating device, the input of which is purified water, and the micro-nano bubble generating device is used to generate micro-nano bubbles through a micro-nano bubble generator; a defluoridation device, wherein the water inlet end of the defluoridation device is connected to the water outlet end of the pump body, and the defluoridation device is also connected to the output end of the micro-nano bubble generating device, and the defluoridation device is used to input a sewage reactant and react the sewage reactant with the raw water to remove fluoride ions and impurities in the raw water; a scraping part, arranged at the upper part of the tail end of the defluorination device, and used for scraping off impurities floating on the upper part of the defluorination device; A clean water tank, wherein the water inlet of the clean water tank is connected to the water outlet of the defluorination device, and the clean water tank is used to store the clean water produced by the defluorination device.

[0007] Furthermore, the integrated device for flotation defluorination of fluorine-containing wastewater from coal mines further comprises: A raw water regulating device, used to regulate the input raw water; wherein the raw water regulating device includes a raw water regulating tank and a raw water regulating mixer; The raw water regulating mixer is arranged in the raw water regulating tank through a fixing device, and the raw water regulating mixer is used to stir the raw water in the raw water regulating tank.

[0008] Furthermore, the defluorination device includes: ontology; a defluoridating agent adding device, connected to the main body, for adding the defluoridating agent to the main body and mixing the defluoridating agent with the wastewater in the main body; a coagulant adding device, connected to the body, for adding a coagulant into the body and mixing the coagulant with the wastewater in the body; A PAM adding device is connected to the body, and is used to add PAM to the body and mix the PAM with the wastewater in the body; Among them, defluoridants, coagulants and PAM are all sewage reaction agents.

[0009] Furthermore, the defluorination agent adding device includes: a defluoridation agent dosing device, connected to the main body, for storing the defluoridation agent and feeding the defluoridation agent into the main body at one end thereof close to the water inlet; The defluorination agent mixer is arranged in the main body at one end close to the water inlet of the main body, and is used for mixing the defluorination agent with the wastewater.

[0010] Furthermore, the coagulant adding device comprises: A coagulant dosing device is connected to the main body and is used to store the coagulant and input the coagulant into the main body; wherein the coagulant is added at a position on the side of the defluoridant addition position away from the water inlet of the main body; A coagulant mixer is arranged in the main body. The coagulant mixer is located on a side of the defluorination agent mixer away from the water inlet of the main body. The coagulant mixer is used to mix the coagulant with the wastewater.

[0011] Furthermore, the PAM adding device includes: The PAM dosing device is connected to the main body and is used to store PAM and input PAM into the main body; wherein the PAM placement position is located on the side of the coagulant placement position away from the defluorination agent placement position.

[0012] Furthermore, a stirring assembly is provided inside the defluorinating agent dosing device, the coagulant dosing device and the PAM dosing device.

[0013] Furthermore, the defluorination device further comprises: A plurality of mud discharge pipes are provided, each of which is arranged at the bottom of the main body and is communicated with the main body.

[0014] Furthermore, the purified water output from the defluorination device is used to input the micro-nano bubble generating device and the water purification pool; The micro-nano bubble generating device includes a micro-nano bubble generator, a high-pressure dissolved gas tank and a gas transmission pipeline; Clean water flows into the input end of the micro-nano bubble generator, the output end of the micro-nano bubble generator is connected to the input end of the high-pressure dissolved air tank, the high-pressure dissolved air tank is connected to the input end of the gas pipeline, and the output end of the gas pipeline is connected to the micro-nano bubble releaser, which is located at the bottom of the defluorination device.

[0015] Furthermore, the scraping part includes: A scraper is provided at the upper part of the tail end of the defluorination device, and is used to scrape off impurities floating on the upper part of the defluorination device; A dirt collecting trough is provided at the lower part of the output end of the scraper, and is used for collecting impurities.

[0016] Compared with the prior art, the present invention has the following advantages: the present invention not only has a better removal effect on pollutants in wastewater that are difficult to be treated by precipitation method, but also can achieve a better removal effect on pollutants in wastewater that can be treated by precipitation method; the surface load of the defluorination device may exceed 12m 3 / (m 2 ·h), the water residence time in the defluorination device only needs 10 to 20 minutes, and the tank depth is only about 2 meters. Therefore, the floor space required is only 1 / 2 to 1 / 8 of that of the sedimentation method, and the tank volume is only 1 / 4 to 1 / 8 of that of the sedimentation method, resulting in a smaller footprint. Furthermore, the scum of the present invention has a low moisture content, below 96%, resulting in a volume 2 to 10 times less than that of the sedimentation method for the same dry weight of sludge, simplifying the sludge disposal process and saving costs. Furthermore, surface sludge removal from the defluorination device is more convenient than bottom sludge removal from the sedimentation tank. In addition to removing suspended solids, the defluorination device contains a certain amount of oxygen in both the effluent and scum, facilitating subsequent processing and preventing deterioration of the sludge. Flotation requires fewer chemicals than sedimentation, and when a coagulant is used as a destabilizing agent, the flotation method does not require the formation of large alum flocs, resulting in a shorter reaction time. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Various other advantages and benefits will become apparent to those skilled in the art upon reading the detailed description of the preferred embodiment below. The accompanying drawings are for illustration purposes only and are not to be considered as limiting the present invention. The same reference symbols are used throughout the drawings to represent the same components. In the drawings: Figure 1 This is a structural schematic diagram of an integrated device for flotation defluorination of fluorine-containing wastewater in coal mines provided by an embodiment of the present invention.

[0018] In the figure, 100, pump body; 200, micro-nano bubble generating device; 210, micro-nano bubble generator; 220, high-pressure dissolved air tank; 230, gas transmission pipeline; 300, defluorination device; 310, main body; 320, defluorination agent adding device; 321, defluorination agent dosing device; 3211, stirring assembly; 322, defluorination agent mixer; 330, coagulant adding device; 331, coagulant dosing device; 332, coagulant mixer; 340, PAM adding device; 341, PAM dosing device; 350, sludge discharge pipe; 400, scraping part; 410, scraping machine; 420, sewage collecting tank; 500, clean water tank; 600, raw water regulating device; 610, raw water regulating tank; 620, raw water regulating mixer. DETAILED DESCRIPTION

[0019] The following embodiments of the present invention are described in further detail with reference to the accompanying drawings and examples. The following examples are used to illustrate the present invention but are not intended to limit the scope of the present invention.

[0020] In the description of this application, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing this application 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, and therefore cannot be understood as a limitation on this application.

[0021] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature specified as "first" or "second" may explicitly or implicitly include one or more of such features. Throughout this application, unless otherwise specified, "plurality" means two or more.

[0022] In the description of this application, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and internal connections between two components. Those skilled in the art will understand the specific meanings of the above terms in this application based on the specific circumstances.

[0023] In some embodiments of the present application, see Figure 1 As shown, this embodiment provides an integrated device for flotation defluorination of fluorine-containing wastewater in coal mines, comprising: Pump body 100, used for conveying raw water; The micro-nano bubble generating device 200 is input with purified water, and is used to generate micro-nano bubbles through a micro-nano bubble generator; A defluorination device 300, wherein the water inlet of the defluorination device 300 is connected to the water outlet of the pump body 100, and the defluorination device 300 is also connected to the output end of the micro-nano bubble generating device 200. The defluorination device 300 is used to input a sewage reactant and react the sewage reactant with the raw water to remove fluoride ions and impurities in the raw water; The scraper 400 is provided at the upper portion of the tail end of the defluorination device 300 and is used to scrape off impurities floating on the upper portion of the defluorination device 300; The water purification tank 500 has a water inlet connected to a water outlet of the defluorination device 300 , and is used to store purified water produced by the defluorination device 300 .

[0024] As will be understood, the present invention aims to efficiently treat fluoride-containing coal mine wastewater to meet environmental standards and reduce environmental pollution. First, the pump body 100 transports raw water, providing power for the entire treatment process and ensuring smooth entry of raw water into the defluorination device 300, laying the foundation for subsequent steps. The micro-nano bubble generator 200 generates micro-nano bubbles by inputting clean water. These micro-nano bubbles form tiny bubbles within the water, helping to carry impurities to the surface for easy removal. Flotation technology is a key component in improving treatment efficiency. The defluorination device 300 is the core of the entire integrated system. It not only connects to the pump body 100 and the micro-nano bubble generator 200 but also inputs the wastewater reactant. Through chemical reactions, fluoride ions and impurities in the wastewater are effectively removed, thereby purifying the water quality. This integrated design simplifies the treatment process, reduces the amount of equipment and operational complexity, and improves treatment efficiency. The scraper 400, located at the upper end of the defluorination device 300, scrapes impurities floating on the water surface, ensuring the proper operation and treatment effectiveness of the defluorination device 300. Impurities are removed by physical means, ensuring the continuity and stability of the treatment process. Finally, the clean water tank 500 is used to store the clean water produced by the defluorination device 300. The existence of the clean water tank 500 ensures that the treated water can be properly stored and managed, avoiding secondary pollution.

[0025] In summary, the integrated flotation defluorination device for coal mine fluoride wastewater provided in this embodiment achieves effective treatment of fluoride-containing wastewater by integrating multiple treatment steps. This device not only improves treatment efficiency and reduces floor space, but also reduces operating costs and complexity.

[0026] Specifically, the present invention not only has a good removal effect on pollutants in wastewater that are difficult to be treated by precipitation, but also often achieves a good removal effect on pollutants in wastewater that can be treated by precipitation. The surface load of the defluorination device may exceed 12m 3 / (m 2 ·h), the water residence time in the defluorination device only needs 10 to 20 minutes, and the tank depth is only about 2 meters. Therefore, the floor space required is only 1 / 2 to 1 / 8 of that of the sedimentation method, and the tank volume is only 1 / 4 to 1 / 8 of that of the sedimentation method, resulting in a smaller footprint. Furthermore, the scum of the present invention has a low moisture content, below 96%, resulting in a volume 2 to 10 times less than that of the sedimentation method for the same dry weight of sludge, simplifying the sludge disposal process and saving costs. Furthermore, surface sludge removal from the defluorination device is more convenient than bottom sludge removal from the sedimentation tank. In addition to removing suspended solids, the defluorination device contains a certain amount of oxygen in both the effluent and scum, facilitating subsequent processing and preventing deterioration of the sludge. Flotation requires fewer chemicals than sedimentation, and when a coagulant is used as a destabilizing agent, the flotation method does not require the formation of large alum flocs, resulting in a shorter reaction time.

[0027] In some embodiments of the present application, the integrated device for flotation and defluorination of fluorine-containing wastewater from coal mines further comprises: The raw water regulating device 600 is used to regulate the input raw water; wherein the raw water regulating device 600 includes a raw water regulating tank 610 and a raw water regulating mixer 620; The raw water regulating mixer 620 is disposed in the raw water regulating tank 610 through a fixing device. The raw water regulating mixer 620 is used to stir the raw water in the raw water regulating tank 610 .

[0028] It can be understood that, first of all, the introduction of the raw water conditioning device 600 ensures that the input raw water is properly pretreated before treatment, which helps to improve the efficiency and effectiveness of the entire defluorination process. The raw water conditioning tank 610 can store a certain amount of raw water, providing a stable water source for subsequent treatment steps. At the same time, the setting of the raw water conditioning mixer 620 can ensure that the suspended matter, particulate matter and other impurities that may be present in the raw water are fully mixed and dispersed, thereby reducing the unevenness during the treatment process and improving the treatment effect. In addition, the raw water conditioning mixer 620 is set in the raw water conditioning tank 610 through a fixing device. This design not only saves space, but also ensures the stable operation of the mixer, reducing the risk of failure caused by equipment movement or vibration. The use of the mixer can effectively prevent the sedimentation of solid particles in the raw water, maintain the uniformity of the raw water, and achieve effective separation and removal. If the solid particles in the raw water are unevenly distributed, it will affect the formation of micro-nano bubbles and the adsorption of fluoride, thereby reducing the defluorination efficiency. In summary, the addition of the raw water conditioning device 600 not only optimizes the raw water treatment conditions and lays a good foundation for the subsequent flotation defluorination process, but also improves the treatment capacity and effect of the entire defluorination process through stable and uniform raw water state, thus playing an important role in the treatment of fluoride-containing wastewater in coal mines.

[0029] Specifically, the raw water conditioning mixer 620 is a submersible mixer.

[0030] In some embodiments of the present application, the defluorination device 300 includes: Ontology 310; a defluorinating agent adding device 320 , which is in communication with the main body 310 , and is used to add the defluorinating agent to the main body 310 and mix the defluorinating agent with the wastewater in the main body 310 ; A coagulant adding device 330 is connected to the main body 310 and is used to add a coagulant to the main body 310 and mix the coagulant with the wastewater in the main body 310; A PAM adding device 340 is connected to the main body 310 and is used to add PAM to the main body 310 and mix the PAM with the wastewater in the main body 310; Among them, defluoridants, coagulants and PAM are all sewage reaction agents.

[0031] It is understood that, firstly, by connecting the defluoridation agent addition device 320, the coagulant addition device 330, and the PAM addition device 340 to the main body 310, these sewage reactants can be efficiently and evenly mixed with the wastewater in the main body 310, maximizing the contact area between the reactants and the wastewater, thereby accelerating the chemical reaction process and improving the efficiency of defluoridation and coagulation. Secondly, this integrated design simplifies the operating process, reducing the complexity and labor intensity of manual operation. The operator only needs to add the reactants to the main body 310 through the corresponding addition device, and the device will automatically complete the mixing and reaction process, which not only improves work efficiency but also reduces the possibility of operational errors. In addition, since the use of reactants is more precise and efficient, the amount of reactants can be reduced, thereby reducing treatment costs. At the same time, due to the improved defluoridation and coagulation effects, the treated water quality is more in line with emission standards, reducing the impact on the environment. In summary, the defluoridation device 300 described in the present invention, through its optimized design, not only improves the efficiency and quality of wastewater treatment, but also reduces operating costs and environmental impact.

[0032] In some embodiments of the present application, the defluorination agent adding device 320 includes: a defluoridating agent dosing device 321, which is in communication with the main body 310 and is used to store the defluoridating agent and to feed the defluoridating agent into the main body 310 at one end close to the water inlet of the main body 310; The defluorinating agent mixer 322 is disposed in the main body 310 at one end close to the water inlet of the main body 310 . The defluorinating agent mixer 322 is used to mix the defluorinating agent with the wastewater.

[0033] In some embodiments of the present application, the coagulant adding device 330 includes: A coagulant dosing device 331 is connected to the main body 310 and is used to store the coagulant and input the coagulant into the main body 310; wherein the coagulant is added at a position on the side of the defluorination agent addition position away from the water inlet of the main body 310; The coagulant mixer 332 is disposed in the main body 310 . The coagulant mixer 332 is located on a side of the defluorinating agent mixer 322 away from the water inlet of the main body 310 . The coagulant mixer 332 is used to mix the coagulant with the wastewater.

[0034] In some embodiments of the present application, the PAM adding device 340 includes: The PAM dosing device 341 is connected to the main body 310 and is used to store PAM and input PAM into the main body 310. The PAM dosing position is located on the side of the coagulant dosing position away from the defluorination agent dosing position.

[0035] It is understandable that this embodiment not only improves the efficiency of wastewater treatment, but also ensures the stability and reliability of the treatment process. First, by arranging the defluoridation agent dosing device 321 to be connected to the body 310, it is ensured that the defluoridation agent can be input into the body 310 in a timely and continuous manner, thereby starting the defluoridation process immediately when the wastewater enters the treatment system, reducing the residence time of fluoride in the wastewater, thereby reducing its potential harm to the environment and subsequent treatment steps. Secondly, the defluoridation agent mixer 322 is arranged in the body 310 near one end of the water inlet of the body 310, ensuring the full mixing of the defluoridation agent and the wastewater, promoting the progress of the chemical reaction, thereby more effectively removing the fluoride in the wastewater. The use of the mixer can prevent the defluoridation agent from forming an uneven distribution in the water, which may lead to inconsistent treatment effects and low efficiency. Regarding the coagulant addition device 330, the design of the coagulant dosing device 331 connected to the main body 310 also ensures timely coagulant delivery. The coagulant is added to the wastewater on the side of the defluoridation agent addition location, away from the water inlet of the main body 310. This helps optimize the contact time between the coagulant and the wastewater, thereby improving the coagulation effect and assisting in agglomerating suspended particles, preparing for the subsequent solid-liquid separation step. Furthermore, the coagulant mixer 332 is located on the side of the defluoridation agent mixer 322, away from the water inlet of the main body 310. This layout takes into account the chemical reaction characteristics of different treatment stages, ensuring that the chemicals in each stage are mixed with the wastewater under optimal conditions, thereby improving the efficiency and effectiveness of the entire treatment process. Finally, the installation of the PAM addition device 340 further improves the wastewater treatment system. PAM (polyacrylamide) is a commonly used flocculant. Its addition location on the side of the coagulant addition location, away from the defluoridation agent addition location, helps form larger flocs in the final stage of wastewater treatment, facilitating subsequent solid-liquid separation. The design of the PAM dosing device 341 being connected to the main body 310 ensures that PAM can be added to the wastewater in a timely and uniform manner, thereby improving the flocculation effect and ensuring the cleanliness of the treated water.

[0036] In summary, the integrated configuration of the defluoridation agent addition device 320, coagulant addition device 330, and PAM addition device 340 described in this application not only improves the efficiency and effectiveness of wastewater treatment, but also ensures the stability and reliability of the entire treatment process by optimizing the placement and mixing of chemical substances. This systematic design takes into account all stages of wastewater treatment and achieves effective removal of harmful substances in wastewater by precisely controlling chemical reaction conditions. Specifically, raw water first enters the defluoridation agent addition device, undergoes a defluoridation reaction, then enters the coagulant addition device, and after a flocculation reaction, enters the PAM addition device. The defluoridation agent addition device is connected to the defluoridation device and adds defluoridation agent to the raw water mixture in the flotation treatment module. The coagulant addition device is connected to the defluoridation device and is configured to add flocculant to the raw water in the defluoridation device. The PAM addition device is connected to the flotation treatment module and adds PAM solution to the raw water in the defluoridation device.

[0037] In some embodiments of the present application, a stirring assembly 3211 is provided inside the defluorinating agent dosing device 321 , the coagulant dosing device 331 and the PAM dosing device 341 .

[0038] As can be understood, firstly, stirring assembly 3211 ensures thorough mixing of the chemicals during the dosing process, improving reaction efficiency and ensuring effective water treatment. Secondly, uniform stirring helps prevent precipitation and agglomeration, extending the effective use time of the dosing agent and reducing waste. Furthermore, the use of a stirring device can reduce manual intervention, reduce operational complexity, and improve the automation level of the entire device.

[0039] In some embodiments of the present application, the defluorination device 300 further includes: A plurality of mud discharge pipes 350 are provided. The mud discharge pipes 350 are provided at the bottom of the main body 310 and are communicated with the main body 310 .

[0040] It is understandable that in some embodiments of the present application, the defluorination device 300 further includes a mud discharge pipe 350, which is provided at the bottom of the device body 310 and is connected to the body 310. First, the provision of the mud discharge pipe 350 helps to discharge the sediment in the device in a timely manner and keep the interior of the device clean, thereby improving the defluorination efficiency and the operational stability of the device. Secondly, since the mud discharge pipe 350 is connected to the body 310, it can ensure the smooth discharge of sediment, reduce the risk of blockage, and reduce maintenance costs. In addition, the provision of the mud discharge pipe 350 can also facilitate operators to conduct regular inspections and cleaning of the device, thereby extending the service life of the device and ensuring the continuity and reliability of the defluorination effect. In summary, the addition of the mud discharge pipe 350 not only improves the performance of the defluorination device 300, but also optimizes its convenience in maintenance and operation.

[0041] In some embodiments of the present application, the purified water output from the defluorination device 300 is used to input the micro-nano bubble generating device 200 and the purified water tank 500; The micro-nano bubble generating device 200 includes a micro-nano bubble generator 210, a high-pressure gas dissolving tank 220 and a gas transmission pipeline 230; Clean water flows into the input end of the micro-nano bubble generator 210, the output end of the micro-nano bubble generator 210 is connected to the input end of the high-pressure dissolved air tank 220, the high-pressure dissolved air tank 220 is connected to the input end of the gas pipeline 230, and the output end of the gas pipeline 230 is connected to the micro-nano bubble releaser, which is located at the bottom of the defluorination device 300.

[0042] It is understandable that in the embodiments of the present application, the clean water produced by the defluorination device 300 is used in the micro-nano bubble generating device 200 and the clean water pool 500. First, the recycling of clean water improves the utilization rate of water resources and reduces the demand for fresh water sources. Secondly, the provision of the high-pressure dissolving tank 220 helps to separate the micro-nano bubbles in the micro-nano bubbles, ensuring the purity of the micro-nano bubbles transported by the gas pipeline 230, thereby improving the operating efficiency and water quality of the entire device. The output end of the gas pipeline 230 is located at the bottom of the defluorination device 300, which can promote the full mixing and circulation of the water body, and help to improve the defluorination efficiency and the uniformity of the water quality. In summary, this integrated design not only optimizes the management of water resources, but also improves the performance of the entire device and the sustainability of the environment.

[0043] Specifically, the micro-nano bubble generator 210 is respectively connected to the defluorination device 300. The micro-nano bubble generator 210 diverts part of the purified water treated by the defluorination device 300 through a micro-nano gas-liquid mixing pump and injects micro-nano bubbles into the purified water. The micro-nano bubble generator 210 transports the purified water injected with micro-nano bubbles to the high-pressure dissolved air tank 220, and the micro-nano bubble generator 210 introduces the micro-nano bubbles into the defluorination device 300.

[0044] In some embodiments of the present application, the scraping portion 400 includes: A scraper 410 is provided on the upper portion of the tail end of the defluorination device 300 and is used to scrape off impurities floating on the upper portion of the defluorination device 300; The dirt collecting tank 420 is provided at the lower part of the output end of the scraper 410 and is used to collect impurities.

[0045] It can be understood that, firstly, the scraper 410 is arranged at the upper part of the tail end of the defluorination device 300, which can effectively scrape off the impurities floating on the upper part of the defluorination device 300, which not only improves the defluorination efficiency, but also ensures the continuous and stable operation of the defluorination device 300. Secondly, the sump 420 is arranged at the lower part of the output end of the scraper 410, which can collect the impurities scraped by the scraper 410, thereby avoiding secondary contamination of impurities and keeping the working environment clean. In addition, this design simplifies the impurity processing process and improves the overall processing efficiency. Overall, the design of the scraper part 400 not only improves the performance of the defluorination device 300, but also optimizes the work process and reduces maintenance costs.

[0046] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and not to limit it. Although the present invention has been described in detail with reference to the above embodiments, ordinary technicians in the field should understand that the specific implementation methods of the present invention can still be modified or replaced by equivalents. Any modification or equivalent replacement that does not depart from the spirit and scope of the present invention should be covered by the scope of protection of the claims of the present invention.

Claims

1. An integrated device for flotation defluorination of fluorine-containing wastewater in coal mines, characterized in that: include: Pump body, used for conveying raw water; A micro-nano bubble generating device, the input of which is purified water, and the micro-nano bubble generating device is used to generate micro-nano bubbles through a micro-nano bubbler; a defluoridation device, wherein the water inlet end of the defluoridation device is connected to the water outlet end of the pump body, and the defluoridation device is also connected to the output end of the micro-nano bubble generating device, and the defluoridation device is used to input a sewage reactant and react the sewage reactant with the raw water to remove fluoride ions and impurities in the raw water; a scraping part, arranged at the upper part of the tail end of the defluorination device, and used for scraping off impurities floating on the upper part of the defluorination device; A clean water tank, wherein the water inlet of the clean water tank is connected to the water outlet of the defluorination device, and the clean water tank is used to store the clean water produced by the defluorination device.

2. The integrated device for flotation defluorination of fluorine-containing wastewater from coal mines according to claim 1, characterized in that: The integrated device for flotation defluorination of fluorine-containing wastewater from coal mines also includes: A raw water regulating device, used to regulate the input raw water; wherein the raw water regulating device includes a raw water regulating tank and a raw water regulating mixer; The raw water regulating mixer is arranged in the raw water regulating tank through a fixing device, and the raw water regulating mixer is used to stir the raw water in the raw water regulating tank.

3. The integrated device for flotation defluorination of fluorine-containing wastewater from coal mines according to claim 1, characterized in that: The defluorination device comprises: ontology; a defluoridating agent adding device, connected to the main body, for adding the defluoridating agent to the main body and mixing the defluoridating agent with the wastewater in the main body; a coagulant adding device, connected to the body, for adding a coagulant into the body and mixing the coagulant with the wastewater in the body; A PAM adding device is connected to the body, and is used to add PAM to the body and mix the PAM with the wastewater in the body; Among them, defluoridants, coagulants and PAM are all sewage reaction agents.

4. The integrated device for flotation defluorination of fluorine-containing wastewater from coal mines according to claim 3, characterized in that: The defluorination agent adding device comprises: a defluoridation agent dosing device, connected to the main body, for storing the defluoridation agent and feeding the defluoridation agent into the main body at one end thereof close to the water inlet; The defluorination agent mixer is arranged in the main body at one end close to the water inlet of the main body, and is used for mixing the defluorination agent with the wastewater.

5. The integrated device for flotation defluorination of fluorine-containing wastewater from coal mines according to claim 4, characterized in that: The coagulant adding device comprises: A coagulant dosing device is connected to the main body and is used to store the coagulant and input the coagulant into the main body; wherein the coagulant is added at a position on the side of the defluoridant addition position away from the water inlet of the main body; A coagulant mixer is arranged in the main body. The coagulant mixer is located on a side of the defluorination agent mixer away from the water inlet of the main body. The coagulant mixer is used to mix the coagulant with the wastewater.

6. The integrated device for flotation defluorination of fluorine-containing wastewater from coal mines according to claim 5, characterized in that: The PAM adding device comprises: The PAM dosing device is connected to the main body and is used to store PAM and input PAM into the main body; wherein the PAM placement position is located on the side of the coagulant placement position away from the defluorination agent placement position.

7. The integrated device for flotation defluorination of fluorine-containing wastewater from coal mines according to claim 6, characterized in that: The defluorinating agent dosing device, the coagulant dosing device and the PAM dosing device are all provided with stirring components.

8. The integrated device for flotation defluorination of fluorine-containing wastewater from coal mines according to claim 3, characterized in that: The defluorination device also includes: A plurality of mud discharge pipes are provided, each of which is arranged at the bottom of the main body and is communicated with the main body.

9. The integrated device for flotation defluorination of fluorine-containing wastewater from coal mines according to claim 1, characterized in that: The purified water output from the defluorination device is used to input into the micro-nano bubble generating device and the water purification pool; The micro-nano bubble generating device includes a micro-nano bubble generator, a high-pressure dissolved gas tank and a gas transmission pipeline; Clean water flows into the input end of the micro-nano bubble generator, the output end of the micro-nano bubble generator is connected to the input end of the high-pressure dissolved air tank, the high-pressure dissolved air tank is connected to the input end of the gas pipeline, and the output end of the gas pipeline is connected to the micro-nano bubble releaser, which is located at the bottom of the defluorination device.

10. The integrated device for flotation defluorination of fluorine-containing wastewater from coal mines according to claim 1, characterized in that: The scraping part includes: A scraper is provided at the upper part of the tail end of the defluorination device, and is used to scrape off impurities floating on the upper part of the defluorination device; A dirt collecting trough is provided at the lower part of the output end of the scraper, and is used for collecting impurities.

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