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

Abstract

The utility model relates to the technical field of fluorine-containing waste water fluorine removal, and discloses a coal mine fluorine-containing waste water air flotation fluorine removal integrated device which comprises a raw water adjusting part communicated with raw water supply pipelines, and the raw water adjusting part is configured to mix raw water supplied by the raw water supply pipelines; the water treatment part is communicated with the raw water adjusting part, and the water treatment part is configured to treat the raw water and separate out purified water and dirt; the water purification tank is communicated with the water treatment part, and the water purification tank is configured to store purified water. Continuous mixing, efficient treatment and cyclic utilization of the coal mine fluorine-containing wastewater are effectively achieved, and the fluorine removal efficiency and the system operation stability are improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to fluorine -containing wastewater defluorination technical field, specifically, relate to a coal mine fluorine -containing wastewater flotation defluorination integrated device. BACKGROUND

[0002] In the coal mine production process, a large number of operation water forms coal mine wastewater after the link of mine gushing water, coal washing drainage etc., and the coal mine wastewater often contains high concentration of fluoride ion. If fluoride is not effectively treated and directly discharged, it will cause serious threat to ecological environment and human health, therefore, efficient purification treatment of coal mine fluorine-containing wastewater has become one of the technical problems to be solved.

[0003] At present, the existing coal mine fluorine-containing wastewater treatment technology mostly adopts coagulation sedimentation, adsorption, membrane separation etc., but is limited by raw water quality fluctuation, complex pollutant composition, often has problems of unstable treatment efficiency and low fluoride ion removal rate, especially when facing multiple raw water sources or uneven water quantity, traditional equipment is difficult to coordinate operation, leading to effluent water quality fluctuation of treatment system, difficult to long-term stable standard reaching. In addition, a large amount of pollution water generated in the wastewater treatment process is often directly discharged or insufficiently treated, causing water resource waste and operation cost increase.

[0004] Therefore, it is urgent to design a coal mine fluorine-containing wastewater treatment device with high structural integration degree, which can realize raw water homogenization regulation, efficient defluorination and recycling of pollution water, to solve the problems of low defluorination efficiency, unstable water quality and low resource utilization rate in the prior art, so as to improve the overall performance and sustainable operation ability of coal mine wastewater treatment system. UTILITY MODEL CONTENTS

[0005] In view of the above, the utility model provides a coal mine fluorine-containing wastewater flotation defluorination integrated device aiming at the deficiencies of the prior art, to solve the problems of low defluorination efficiency, unstable water quality and low resource utilization rate in the prior art.

[0006] The utility model provides a coal mine fluorine-containing wastewater flotation defluorination integrated device, including:

[0007] The raw water regulating part is connected with each raw water supply pipeline, and is configured to mix the raw water supplied by each raw water supply pipeline;

[0008] The water treatment part is connected with the raw water regulating part, and is configured to separate purified water and scale pollution after treating the raw water;

[0009] The water tank is connected with the water treatment part, and is configured to store the purified water.

[0010] Further, the raw water regulating part includes:

[0011] The raw water conditioning tank is connected with each raw water supply pipeline, and is configured to buffer the raw water supplied by each raw water supply pipeline and store the raw water;

[0012] The raw water agitator is arranged in the raw water conditioning tank, and is configured to mix the raw water in the raw water conditioning tank;

[0013] The raw water lifting module is connected with the raw water conditioning tank, and is configured to adjust the flow and flow rate of the raw water mixture in the raw water conditioning tank and guide the flow of the raw water mixture.

[0014] Further, the raw water pretreatment module comprises:

[0015] The transmission pipeline is connected with the raw water conditioning tank and is configured to guide the flow of the raw water mixture in the raw water conditioning tank;

[0016] The raw water lifting pump is connected with the transmission pipeline and is configured to adjust the flow rate of the raw water mixture in the transmission pipeline.

[0017] Further, the water treatment part comprises:

[0018] The air flotation fluorine removal module is connected with the transmission pipeline and the clean water tank respectively, and is configured to perform a dosing reaction on the raw water mixture, inject micro-nano bubbles into the reacted mixture, and perform deslagging and fluorine removal treatment on the raw water mixture with the injected micro-nano bubbles, and is further configured to guide the purified water after the deslagging and fluorine removal treatment of the raw water mixture to the clean water tank;

[0019] The dosing module is configured in three parts, the raw water mixture first enters the defluorination agent dosing module, then enters the flocculant dosing module after defluorination reaction, and then enters the PAM dosing module after flocculation reaction.

[0020] The defluorination agent dosing module is connected with the air flotation treatment module, and is configured to add a defluorination agent to the raw water mixture in the air flotation treatment module.

[0021] The flocculant dosing module is connected with the air flotation treatment module, and is configured to add a flocculant to the raw water mixture in the air flotation treatment module.

[0022] The PAM dosing module is connected with the air flotation treatment module, and is configured to add PAM liquid to the raw water mixture in the air flotation treatment module.

[0023] Further, the air flotation fluorine removal module comprises:

[0024] The gas float fluorine removal unit is connected with the transmission pipeline and the clean water pool respectively, and is configured to remove slag and fluorine from the raw water mixture injected with nano bubbles, and guide the treated purified water to the clean water pool.

[0025] The micro-nano bubble unit is connected with the gas float fluorine removal unit respectively, and is configured to guide part of the purified water treated by the gas float fluorine removal unit through a micro-nano gas-liquid mixing pump, and inject supersaturated micro-nano bubbles into the purified water. The micro-nano bubble unit is also configured to deliver the purified water injected with the supersaturated micro-nano bubbles to a high-pressure gas dissolving tank, and to guide the supersaturated micro-nano bubbles into the gas float fluorine removal unit.

[0026] The slag scraping unit is arranged at the top of the gas float fluorine removal unit, and is configured to scrape slag from the upper layer of the raw water mixture in the gas float fluorine removal unit.

[0027] Further, the gas float fluorine removal unit comprises:

[0028] The bracket is provided with a buffer support structure at the bottom;

[0029] The gas float fluorine removal body is arranged at the upper part of the bracket, and is connected with the air float bracket. The gas float fluorine removal body is connected with the transmission pipeline and the clean water pool respectively, and is configured to continuously treat the raw water mixture guided by the transmission pipeline.

[0030] The vent pipe is provided with at least three groups, and the three groups of vent pipes are arranged at opposite sides of the gas float fluorine removal body;

[0031] The sludge discharge pipe is provided with at least three groups, and the three groups of sludge discharge pipes are arranged at one end of the gas float fluorine removal body away from the vent pipe;

[0032] The water outlet pipe is arranged at one end of the air float body, and is connected with the gas float fluorine removal body and the clean water pool respectively. The water outlet pipe is configured to guide the purified water separated from the air float body to the clean water pool.

[0033] Further, the air float body is also provided with a PAM stirrer, a flocculant stirrer and a defluorination agent stirrer, wherein:

[0034] The defluorination agent stirrer is configured to be fixed on the bracket at the upper part of the defluorination reaction tank. The defluorination agent feeding module is connected with the defluorination reaction tank. The defluorination agent stirrer is configured to stir the raw water mixture with the added defluorination agent.

[0035] The flocculant stirrer is configured to be fixed on the bracket at the upper part of the flocculation reaction tank. The flocculant feeding module is connected with the flocculation reaction tank. The flocculant stirrer is configured to stir the raw water mixture with the added flocculant.

[0036] The PAM stirrer is configured to be fixed on a support at the upper portion of the PAM reaction tank, the PAM dosing module is communicated with the PAM reaction tank, and the PAM stirrer is configured to stir the raw water mixed solution into which the PAM liquid medicine is added.

[0037] The micro-nano gas-liquid mixing pump is communicated with the water outlet pipe, and the micro-nano gas-liquid mixing pump is configured to guide the purified water from the water outlet pipe and inject the micro-nano bubbles into the guided purified water in a supersaturated state.

[0038] The high-pressure gas dissolving tank is communicated with the micro-nano gas-liquid mixing pump, and the high-pressure gas dissolving tank is configured to store the high-pressure purified water containing the micro-nano bubbles and promote the micro-nano bubbles to be uniformly and supersaturatedly dissolved in the liquid.

[0039] The guide pipe is arranged at the middle and lower portion of the air floatation defluorination body, and the other end of the guide pipe is communicated with the high-pressure gas dissolving tank through the air floatation defluorination body, and the guide pipe is configured to guide the purified water containing the micro-nano bubbles to the micro-nano bubble releaser in the air floatation defluorination body, so that a large amount of micro-nano bubbles are rapidly released in the raw water mixed solution after reaction at the bottom of the air floatation tank.

[0040] Further, the slag scraping unit comprises:

[0041] The slag discharge pipe is arranged at the middle and upper portion of one side of the air floatation defluorination body.

[0042] The slag scraper is arranged at the top of the air floatation defluorination body, and the slag scraper is configured to scrape the flocculation slag of the air floatation body to the slag discharge pipe.

[0043] Compared with the prior art, the beneficial effects of the utility model lie in that the raw water adjusting part is arranged to be communicated with a plurality of raw water supply pipelines, so that raw water from different sources can be fully mixed, thereby effectively balancing the water quality difference and improving the consistency and stability of the subsequent treatment process. The mixed raw water is uniformly treated in the water treatment part, which helps to accurately control the reaction conditions and the air floatation parameters, realizes efficient separation of fluorides and impurities, and significantly improves the defluorination effect. The treated purified water is introduced into the clean water tank for centralized storage, which not only facilitates subsequent reuse or standard discharge, but also improves the utilization rate of water resources. Overall, the device realizes efficient cooperation of the fluorine-containing wastewater treatment process through the integrated design of adjustment, treatment and recovery, and has the beneficial effects of compact structure, stable operation, resource saving and excellent environmental protection performance. BRIEF DESCRIPTION OF DRAWINGS

[0044] Fig. 1 A coal mine fluorine-containing wastewater air floatation defluorination integrated device structure schematic view is provided for the utility model embodiment.

[0045] Fig. 2The utility model provides a structure schematic view of air supporting machine support provided by the embodiment of the utility model.

[0046] Fig. 3 The utility model provides a front view of air supporting machine body provided by the embodiment of the utility model.

[0047] Wherein: 11, raw water regulating pool;12, raw water mixer;131, transmission pipeline;132, raw water lifting pump;210, air floating fluorine removal module;211, PAM mixer;212, flocculant mixer;213, fluorine removal agent mixer;214, micro-nano gas-liquid mixing pump;215, high pressure gas dissolving tank;216, vent pipe;217, sludge discharge pipe;218, slag scraper;219, slag discharge pipe;2101, support;22, PAM dosing module;23, flocculant dosing module;24, fluorine removal agent dosing module;25, water outlet pipe. DETAILED DESCRIPTION

[0048] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of the present application.

[0049] In the description of the present application, it should be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, therefore it cannot be understood as a limitation of the present application.

[0050] The terms "first", "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined with "first", "second" can explicitly or implicitly include one or more of the features. In the description of the present application, unless otherwise specified, the meaning of "a plurality of" is two or more.

[0051] In the description of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms "mounting", "connection", "linking" should be understood broadly, for example, it can be fixed connection, or detachable connection, or integral connection; it can be mechanical connection, or electrical connection; it can be direct connection, or indirect connection through intermediate medium, or internal communication of two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0052] As Figs. 1-3 shown, the coal mine fluorine-containing wastewater fluorine removal integrated device in some embodiments of the present application comprises: a raw water adjusting part, a water treatment part and a clean water pool.

[0053] Specifically, the raw water adjusting part is in communication with each raw water supply pipeline, and is configured to mix the raw water supplied by each raw water supply pipeline; the water treatment part is in communication with the raw water adjusting part, and is configured to separate purified water and scale dirt after treating the raw water; the clean water pool is in communication with the water treatment part, and is configured to store the purified water.

[0054] It can be understood that the raw water adjusting part is in communication with multiple raw water supply pipelines, and can collect and uniformly mix raw water from different sources or different sections. Because the coal mine wastewater has complex water quality composition and large fluctuation, the mixing process can adjust water quality parameters and buffer water quality fluctuation, thus creating relatively stable water inlet conditions for subsequent processing links, thereby improving processing precision and reliability. Secondly, the mixed raw water is introduced into the water treatment part, which is internally provided with a flotation treatment module for fluorine removal. A large number of micro-bubbles are formed by using the principle of flotation, and the suspended particles, colloidal impurities and flocculation combined with fluoride in the water are separated from the water by mechanisms such as bubble adhesion and floating. This process usually combines chemical treatment methods such as adding flocculants and adjusting pH, effectively realizing the desorption and flocculation of fluoride ions, and thus improving the fluorine removal efficiency. Finally, the treated purified water flows into the clean water pool for centralized storage. The clean water pool as a terminal storage unit can be used for temporary water storage, water quality monitoring and subsequent water resource reuse or control management of standard discharge. By setting this structure, the continuous and stable water outlet can be further ensured, and the system risks caused by water surge or processing interruption in the processing process can be avoided.

[0055] Specifically, the raw water conditioning part includes: a raw water conditioning tank 11 connected with each raw water supply pipeline, configured to buffer the raw water supplied by each raw water supply pipeline, and also configured to store the raw water supplied by each raw water supply pipeline; a raw water stirrer 12 arranged inside the raw water conditioning tank 11, configured to mix and stir each raw water inside the raw water conditioning tank 11; and a raw water lifting module connected with the raw water conditioning tank 11, configured to adjust the flow rate and flow velocity of the raw water mixture inside the raw water conditioning tank 11 and guide the raw water mixture.

[0056] Specifically, the raw water pretreatment module includes: a transmission pipeline 131 connected with the raw water conditioning tank 11, configured to guide the adjusted raw water mixture inside the raw water conditioning tank 11; and a raw water lifting pump 132 connected with the transmission pipeline 131, configured to adjust the flow rate and flow velocity of the raw water mixture inside the transmission pipeline 131.

[0057] It can be understood that the raw water conditioning tank 11 is connected with multiple raw water supply pipelines, which can realize the centralized collection and temporary storage of raw water from different sources or different processing stages. Due to the large difference in water quality at each wastewater discharge point in the coal mine site, directly feeding into the treatment unit can easily cause uneven inflow, large fluctuation in flocculant dosage, unstable treatment load and other problems. The setting of the raw water conditioning tank 11 can effectively buffer the raw water flow, avoid the decrease of treatment efficiency caused by water supply pulse in a short time, and further improve the continuity and stability of the whole system. In order to further improve the uniformity of the water quality of the raw water, the raw water stirrer 12 is arranged inside the raw water conditioning tank 11, which is used to fully mix the raw water in the tank. The stirring process not only promotes the uniformity of the components of raw water from different sources, but also avoids problems such as deposition of particulate matter and stratification of organic matter, ensuring that the raw water entering the water treatment part has good physical and chemical consistency, thereby being beneficial to the accuracy of reagent addition and the controllability of reaction conditions in subsequent air flotation, flocculation and other treatment processes. In addition, in order to realize stable water delivery and hydraulic regulation, the system is provided with a raw water lifting module which is connected with the raw water conditioning tank 11 and lifts and guides the mixture through the built-in raw water lifting pump 132. This module not only plays a role in lifting the water level, but also can accurately control the flow rate and flow velocity of the water flow by adjusting the pump speed, preventing the subsequent treatment unit from being overloaded or having hydraulic short circuit, and improving the safety of system operation. The raw water pretreatment module matched with it includes the transmission pipeline 131 and the raw water lifting pump 132, forming a complete raw water delivery channel. The transmission pipeline 131 leads the adjusted and mixed raw water out of the conditioning tank, and the raw water lifting pump 132 adjusts the flow rate of the raw water mixture in the pipeline, ensuring that the water flow remains stable and smooth during the delivery process, effectively avoiding system vibration, equipment wear and loss of efficiency caused by uneven flow rate or pressure fluctuation.

[0058] Specifically, the water treatment part comprises: a gas float fluorine removal module 210, which is respectively connected with the transmission pipeline 131 and the clean water pool, and is configured to perform a dosing reaction on the raw water mixture, inject micro-nano bubbles into the reacted mixture, and perform deslagging and fluorine removal treatment on the raw water mixture injected with the micro-nano bubbles, and further configured to guide the purified water after the deslagging and fluorine removal treatment of the raw water mixture to the clean water pool; the dosing module is configured in three parts, the raw water mixture first enters the defluorination agent dosing module 24, then enters the flocculant dosing module 23 after defluorination reaction, and then enters the PAM dosing module 22 after flocculation reaction; the PAM dosing module 22 is connected with the gas float treatment module, and is configured to add PAM liquid to the raw water mixture in the gas float treatment module; the flocculant dosing module 23 is connected with the gas float treatment module, and is configured to add flocculant to the raw water mixture in the gas float treatment module; the defluorination agent dosing module 24 is connected with the gas float treatment module, and is configured to add defluorination agent to the raw water mixture in the gas float treatment module.

[0059] It can be understood that the air flotation defluorination module 210 is the core processing unit of the system, which realizes the efficient conversion of contaminated raw water to purified water through communication with the raw water transmission pipeline 131 and the purified water tank. The core principle of this module is to inject nanoscale micro-bubbles into the raw water mixture, which forms a large number of floating carriers in the water, which can quickly attach to flocs, suspended impurities, and fluorides combined with reagents, and carry them to the water surface during the floating process of the bubbles, forming a dreg layer, thereby realizing solid-liquid separation and achieving the purpose of dreg removal and defluorination. Compared with traditional air flotation technology, nanobubbles have the advantages of small bubble size, large surface area, and long residence time, significantly improving the floating efficiency and impurity capture capacity, especially suitable for the treatment of small particle size and difficult to settle pollutants in coal mine wastewater. In order to enhance the formation quality of flocs and defluorination efficiency in the air flotation process, the system is equipped with multiple functional dosing modules. First, the PAM dosing module 22 is connected to the air flotation module to add polyacrylamide high molecular weight flocculation aids. The PAM molecular chain has strong bridging effect, which can effectively adsorb and connect small particles to form large particle flocs, which are easy to combine with nanobubbles and be separated by air flotation, improving flocculation efficiency and separation effect. Second, the flocculant dosing module 23 is used to add inorganic or organic flocculants such as aluminum sulfate, polyaluminum chloride, etc. to the raw water mixture. This kind of flocculant neutralizes the charge of colloidal particles in water, destroys its stability, and makes it aggregate into larger flocs, providing a basic condition for PAM to play a bridging role. The synergistic effect of flocculant and PAM greatly improves the removal capacity of solid particles and pollutants in wastewater. Further, to remove fluoride ions, the system is equipped with a defluorination agent dosing module 24. This module can accurately add special defluorination reagents such as aluminum chloride iron, modified bentonite or rare earth adsorbents, etc. to the air flotation module, which uses its adsorption, neutralization or precipitation effect on fluoride ions to convert fluoride ions from solution into flocculent precipitate, thereby achieving efficient removal of soluble fluorine. The purified water after treatment is guided to the purified water tank through the outlet channel of the air flotation defluorination module 210 for storage. This process realizes the continuous treatment of separating pollutants from raw water and recycling clean water, ensuring the effective use or discharge of subsequent water resources. The purified water tank also has water quality stabilization and flow regulation functions to provide buffer support for the subsequent process of the system.

[0060] Specifically, the air float fluorine removal module 210 comprises: an air float fluorine removal unit, respectively connected with the clean water pool through the transmission pipeline 131, the air float fluorine removal unit is configured to remove the slag and fluorine in the raw water mixture injected with nano bubbles, and guide the treated purified water to the clean water pool; a micro-nano bubble unit, respectively connected with the air float fluorine removal unit, the micro-nano bubble unit, respectively connected with the air float fluorine removal unit, the micro-nano bubble unit is configured to guide part of the purified water treated by the air float fluorine removal unit through the micro-nano bubble liquid mixing pump, and inject supersaturated micro-nano bubbles into the purified water, the micro-nano bubble unit is also configured to transport the purified water injected with supersaturated micro-nano bubbles to the high-pressure gas dissolving tank, and the micro-nano bubble unit is also configured to guide the supersaturated micro-nano bubbles into the air float fluorine removal unit; a slag scraping unit arranged at the top of the air float fluorine removal unit, the slag scraping unit is configured to scrape the slag on the upper layer of the raw water mixture in the air float fluorine removal unit.

[0061] It can be understood that the micro-nano bubble unit serves as a source of nano-bubble injection, and a large number of nano-bubbles are injected into the pretreated purified water through a precise gas-liquid mixing device. Due to the characteristics of nano-bubbles, such as small particle size, large specific surface area, and high surface energy, the purified water after gas injection has strong floating and carrying capacity. When the purified water is introduced into the air float fluorine removal unit, the nano-bubbles can quickly adhere to the suspended particles, flocs and fluoride reaction products in the raw water mixture, thereby forming a stable flotation system. The bubble floating process brings the pollutants to the liquid surface, realizing solid-liquid separation and achieving the dual goals of defluorination and deslagging. Secondly, the air float fluorine removal unit serves as the core reaction chamber, and is responsible for the main functions of pollutant separation and purified water output. In the unit, the pollutants adhered by the bubbles gradually accumulate in the upper layer of the water body to form a floating slag layer, while the lower layer of water is gradually purified due to the reduction of pollutant concentration. The treated clear water flows out from the bottom or side of the guide port and is guided to the clean water pool for storage. The whole process does not need to be settled or filtered, which significantly shortens the treatment time and reduces the equipment occupation and operation cost. In order to prevent the accumulation of floating slag on the upper layer of the reaction chamber affecting the system operation efficiency, a slag scraping unit is arranged at the top of the air float fluorine removal unit. The slag scraping unit periodically or continuously scrapes the surface of the floating slag through a mechanical device, and transports the collected pollutants to an external sludge treatment device or a waste slag collection system. This structure can effectively avoid the problems of fluorine removal efficiency reduction caused by floating slag blockage, repeated backfall or bubble accumulation, and further improve the stability and continuous operation capacity of the system. It is worth mentioning that the fluid channel design between the micro-nano bubble unit and the air float fluorine removal unit realizes the recycling mechanism of bubble water, that is, the nano-bubbles are not consumed in one direction, but can be injected into the raw water mixture for multiple reactions. This technical path greatly improves the utilization rate of bubbles, reduces the operation cost, and also enhances the contact efficiency of pollutants and bubbles, improves the overall treatment effect.

[0062] Specifically, the air floatation defluorination unit comprises: a support 2101, the bottom of which is provided with a buffer support structure; an air floatation defluorination body provided at the upper portion of the support 2101, the air floatation defluorination body being connected with the air floatation machine support 2101, and the air floatation defluorination body being in communication with the transmission pipeline 131 and the clean water pool respectively, the air floatation defluorination body being configured to continuously process the raw water mixture guided by the transmission pipeline 131; at least three groups of air release pipes 216, which are respectively arranged at opposite sides of the air floatation defluorination body; at least three groups of sludge discharge pipes 217, which are respectively arranged at one end of the air floatation defluorination body away from the air release pipes 216; and a water outlet pipe 25 arranged at one end of the air floatation machine body, the water outlet pipe 25 being in communication with the air floatation defluorination body and the clean water pool respectively, the water outlet pipe 25 being configured to guide the purified water separated from the air floatation machine body to the clean water pool.

[0063] Specifically, the air floatation machine body is further provided with a PAM stirrer 211, a flocculating agent stirrer 212 and a defluorination agent stirrer 213, wherein: the defluorination agent stirrer 213 is configured to be fixed on the support at the upper portion of the defluorination reaction tank, the defluorination agent feeding module 24 being in communication with the defluorination reaction tank, the defluorination agent stirrer 213 being configured to stir the raw water mixture to which the defluorination agent is added; the flocculating agent stirrer 212 is configured to be fixed on the support at the upper portion of the flocculation reaction tank, the flocculating agent feeding module 23 being in communication with the flocculation reaction tank, the flocculating agent stirrer 212 being configured to stir the raw water mixture to which the flocculating agent is added; and the PAM stirrer 211 is configured to be fixed on the support at the upper portion of the PAM reaction tank, the PAM feeding module 22 being in communication with the PAM reaction tank, the PAM stirrer 211 being configured to stir the raw water mixture to which the PAM liquid medicine is added.

[0064] It can be understood that the air float fluorine removal unit is the key processing device in the air float fluorine removal module 210, and the support 2101 is combined with the buffer support structure to ensure the stability and shock absorption effect of the whole device during operation, so as to avoid equipment damage or unstable operation caused by mechanical vibration or fluid impact. The air float fluorine removal body is arranged at the upper part of the support 2101, which is used as the core reaction chamber for storing and processing the raw water mixture from the transmission pipeline 131, so as to ensure the continuity and efficiency of the air float fluorine removal process. The air float fluorine removal body is provided with a plurality of vent pipes 216 arranged on opposite sides for timely releasing the gas generated during the treatment process to prevent gas accumulation causing gas resistance or affecting the gas-liquid mixing effect. At the same time, a plurality of sludge discharge pipes 217 are arranged at one end away from the vent pipe 216 for discharging the sludge settled during the air float process, so as to ensure the cleanliness of the internal environment of the reaction chamber and the stable operation of the system. The multi-point gas and sludge discharge design effectively improves the fluid dynamics performance and separation efficiency of the air float reaction chamber. In addition, the water outlet pipe 25 serves as a connecting channel between the air float fluorine removal unit and the clean water tank, and is responsible for stably guiding the treated purified water to the clean water tank, so as to ensure the continuity of the subsequent water storage and utilization. The reasonable arrangement and sealing performance of the water outlet pipe 25 are directly related to the overall airtightness and leakage prevention ability of the system, and further affect the defluorination efficiency and operation safety. Inside the air float fluorine removal body, PAM stirrers 211, flocculant stirrers 212 and defluorination agent stirrers 213 are respectively arranged and connected with the corresponding dosing modules. The stirrers promote the uniform distribution and sufficient reaction of PAM, flocculant and defluorination agent in the raw water mixture through mechanical stirring. The PAM stirrer 211 helps to form large particle flocs and enhances the bridging effect between particles; the flocculant stirrer 212 enhances the flocculation effect by promoting the aggregation of colloidal particles; and the defluorination agent stirrer 213 ensures that the defluorination agent can effectively combine with fluoride ions to form flocculent substances that can be separated by air floatation. The multi-stage medicament stirring and mixing mechanism greatly improves the medicament utilization efficiency and treatment effect.

[0065] Specifically, the micro-nano bubble unit comprises: a micro-nano gas-liquid mixing pump 214 connected with the water outlet pipe 25, the micro-nano gas-liquid mixing pump 214 being configured to guide the purified water from the water outlet pipe 25 and inject supersaturated micro-nano bubbles into the guided purified water; a high-pressure gas dissolving tank 215 connected with the micro-nano gas-liquid mixing pump 214, the high-pressure gas dissolving tank 215 being configured to store the purified water containing micro-nano bubbles; and a flow guide pipe, one end of the flow guide pipe being arranged at the middle and lower part inside the air float fluorine removal body, the other end of the flow guide pipe penetrating the air float fluorine removal body and being connected with the high-pressure gas dissolving tank 215, the flow guide pipe being configured to guide the purified water containing micro-nano bubbles to the micro-nano bubble releaser inside the air float fluorine removal body, so that a large amount of micro-nano bubbles are rapidly released in the raw water mixture after reaction at the bottom of the air float tank.

[0066] It can be understood that by injecting nanobubbles into the purified water guided from the water outlet pipe 25 through the micro-nano gas-liquid mixing pump 214, the nanobubbles have the characteristics of small particle size, large specific surface area, and slow upward velocity, which can fully improve the gas-liquid contact area and enhance the combination ability of bubbles with suspended particles and fluoride in water, laying a foundation for subsequent air floatation separation. In order to ensure the continuous supply and stable characteristics of nanobubbles, the high-pressure gas dissolving tank 215 is designed to store purified water containing nanobubbles, avoiding the rupture of bubbles due to pressure changes or pipeline friction during transportation, and ensuring the stability of bubble concentration and activity. This storage tank acts as a buffer and stabilizing device, allowing the gas production and bubble supply of the micro-nano gas-liquid mixing pump 214 to be dynamically adjusted according to system requirements, improving the continuity and reliability of the air floatation process. In addition, one end of the guide pipe is arranged in the middle and lower part of the air floatation defluorination body, and the other end penetrates the air floatation defluorination body and is connected with the high-pressure gas dissolving tank 215, which is used to effectively guide the stored purified water containing nanobubbles into the air floatation defluorination body and mix with the raw water mixture. The design of this guide path realizes the recycling of the gas-liquid mixture, so that nanobubbles can repeatedly participate in the defluorination and deslagging process, improving bubble utilization and reducing system energy consumption. Through the circulation of the micro-nano bubble unit, nanobubbles and pollutants in the air floatation defluorination body achieve sufficient contact and reaction, promoting the flocculation, upward floating and separation of pollutant particles, thereby significantly improving the purification effect and operation efficiency of the air floatation system. Overall, the micro-nano bubble unit integrates bubble generation, storage and recycling transportation functions, embodies the fusion application of advanced nanobubble technology and hydraulic circulation control, and provides solid technical support for efficient treatment of coal mine fluorine-containing wastewater.

[0067] Specifically, the deslagging unit includes a deslagging pipe 219 arranged in the middle and upper part of one side of the air floatation defluorination body, and a deslagging machine 218 arranged at the top of the air floatation defluorination body, which is configured to scrape the flocculated sludge of the air floatation body to the deslagging pipe 219.

[0068] It can be understood that through the deslagging machine 218 arranged at the top of the air floatation defluorination body, the flocculated sludge formed in the air floatation process is mechanically scraped off from the water surface and transported to the external discharge system along the deslagging pipe 219 arranged in the middle and upper part of one side of the air floatation defluorination body. This structure realizes the timely and continuous removal of floating sludge, prevents the accumulation of flocculation in the water surface, reduces the treatment efficiency or causes equipment blockage, ensures the stable operation and continuous purification effect of the air floatation defluorination unit, and embodies the efficient sludge treatment technology principle combining mechanical deslagging and fluid deslagging.

[0069] It can be understood that one of the above-mentioned embodiments of the coal mine fluorine-containing wastewater fluorine flotation removal integrated device can be understood as follows: by setting the raw water adjusting part, the raw water adjusting part is communicated with a plurality of raw water supply pipelines, so that raw water from different sources can be fully mixed, thereby effectively balancing the water quality difference and improving the consistency and stability of the subsequent treatment process. The mixed raw water enters the water treatment part for unified treatment, which is helpful for accurately controlling the reaction conditions and the air flotation parameters, realizing efficient separation of fluorides and impurities, and significantly improving the fluorine removal effect. The treated purified water is introduced into the purified water tank for centralized storage, which not only facilitates subsequent reuse or standard discharge, but also improves the utilization rate of water resources. Overall, the device realizes efficient cooperation of the fluorine-containing wastewater treatment process through the integrated design of adjustment, treatment and recovery, and has the beneficial effects of compact structure, stable operation, resource saving and excellent environmental protection performance.

[0070] Obviously, those skilled in the art can make various modifications and variations to the present application without departing from the spirit and scope of the present application. Thus, if these modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application also intends to include these modifications and variations.

Claims

1. A coal mine fluorine-containing wastewater fluorine removal and flotation integrated device, characterized in that, The application relates to a water purification device. The application relates to a water purification device. The application relates to a water purification device. The application relates to a water purification device.

2. The integrated fluorine removal device for coal mine fluorine-containing wastewater by air flotation according to claim 1, characterized in that, The application relates to a water purification device. The application relates to a water purification device. The application relates to a water purification device. The application relates to a water purification device.

3. The integrated device for removing fluorine from coal mine fluorine-containing wastewater by air floatation according to claim 2, characterized in that, The application relates to a water purification device. The application relates to a water purification device. The application relates to a water purification device.

4. The integrated device for removing fluorine from coal mine fluorine-containing wastewater by air flotation according to claim 3, characterized in that, The application relates to a water purification device. The application relates to a water purification device. The application relates to a water purification device. The application relates to a water purification device. The application relates to a water purification device. The application relates to a water purification device.

5. The integrated device for removing fluorine from coal mine fluorine-containing wastewater by air flotation according to claim 4, characterized in that, The application relates to a water purification device. The application relates to a water purification device. The application relates to a water purification device. The application relates to a water purification device. The application relates to a water purification device. The application relates to a water purification device. The application relates to a water purification device. The application relates to a water purification device. The application relates to a water purification device. The application relates to a water purification device. The application relates to a water purification device. The application relates to a water purification device. The application relates to a water purification device. The application relates to a water purification device. The application relates to a water purification device. 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6. The integrated device for removing fluorine from coal mine fluorine-containing wastewater by air flotation according to claim 5, characterized in that, The air flotation fluorine removal unit comprises: a support configured with a buffer support structure at the bottom; an air flotation fluorine removal body arranged at the upper part of the support, connected with the air flotation machine support, and in communication with the transmission pipeline and the clean water pool, and configured to continuously process the raw water mixture guided by the transmission pipeline; at least three groups of vent pipes, each arranged at opposite sides of the air flotation fluorine removal body; at least three groups of sludge discharge pipes, each arranged at one end of the air flotation fluorine removal body away from the vent pipes; a water outlet pipe arranged at one end of the air flotation machine body, in communication with the air flotation fluorine removal body and the clean water pool, and configured to guide the purified water separated from the air flotation machine body to the clean water pool.

7. The integrated device for removing fluorine from coal mine fluorine-containing wastewater by air flotation according to claim 6, characterized in that, The air flotation machine body further comprises a PAM stirrer, a flocculant stirrer, and a defluorination agent stirrer, wherein: the defluorination agent stirrer is configured to be fixed on the support at the upper part of the defluorination reaction tank, the defluorination agent feeding module is in communication with the defluorination reaction tank, and the defluorination agent stirrer is configured to stir the raw water mixture with the added defluorination agent; the flocculant stirrer is configured to be fixed on the support at the upper part of the flocculation reaction tank, the flocculant feeding module is in communication with the flocculation reaction tank, and the flocculant stirrer is configured to stir the raw water mixture with the added flocculant; the PAM stirrer is configured to be fixed on the support at the upper part of the PAM reaction tank, the PAM feeding module is in communication with the PAM reaction tank, and the PAM stirrer is configured to stir the raw water mixture with the added PAM solution.

8. The integrated device for removing fluorine from coal mine fluorine-containing wastewater by air flotation according to claim 7, characterized in that, The micro-nano bubble unit comprises: a micro-nano gas-liquid mixing pump in communication with the water outlet pipe, configured to guide the purified water from the water outlet pipe and inject supersaturated micro-nano bubbles into the guided purified water; a high-pressure gas dissolving tank in communication with the micro-nano gas-liquid mixing pump, configured to store high-pressure purified water containing micro-nano bubbles and promote the uniform supersaturation of micro-nano bubbles in the liquid; a guide pipe arranged at the middle and lower part of the air flotation fluorine removal body, with one end passing through the air flotation fluorine removal body and being in communication with the high-pressure gas dissolving tank, and the other end being configured to guide the purified water containing micro-nano bubbles to the micro-nano bubble releaser in the air flotation fluorine removal body, so that a large amount of micro-nano bubbles are rapidly released in the raw water mixture after reaction at the bottom of the air flotation pool.

9. The integrated device for removing fluorine from coal mine fluorine-containing wastewater by air flotation according to claim 8, characterized in that, The slag scraping unit comprises: a slag discharge pipe arranged at the middle and upper part of one side of the air flotation fluorine removal body; a slag scraper arranged at the top of the air flotation fluorine removal body, configured to scrape the flocculation slag of the air flotation machine body to the slag discharge pipe.

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