Device for removing high-concentration fluorine ions and organic matters in water

Abstract

The utility model relates to the technical field of water treatment, in particular to a device for removing high-concentration fluorine ions and organic matters in water, which comprises an outer cylinder and an inner cylinder, a reaction layer is formed between the bottoms of the inner cylinder and the outer cylinder, a separation layer is formed between the tops of the inner cylinder and the outer cylinder, and a water inlet pipe and a feeding pipe are arranged on the outer cylinder. The water inlet pipe is provided with an adjusting assembly for adjusting the fluidization state of the crystal inducing carrier in the reaction layer, the bottom of the outer cylinder is provided with a crystal substance discharge pipe, the crystal substance discharge pipe is communicated with the reaction layer, the top of the outer cylinder is provided with a water outlet, the water outlet is communicated with the separation layer, and the water outlet is provided with a precipitation adsorption assembly. According to the device, the fluidization state of the crystal inducing carrier is optimized by accurately controlling the water inlet flow, the removal efficiency of pollutants in water is improved, the stability of the effluent quality of the system can be improved through the precipitation adsorption assembly in the device, and the device has good adaptability to different water quality and water quantity conditions.

Description

Technical Field

[0001] The utility model relates to the technical field of water treatment, in particular to a device for removing high-concentration fluorine ions and organic matter in water. Background Art

[0002] Fluoride pollution in water is one of the main problems that affect people's drinking and water use. Fluorine mineral products are widely used in fluorine chemical industry, metallurgy, electronics and new energy industries. The large amount of fluoride-containing wastewater generated during its processing and utilization will have a significant impact on the ecological environment and the human body. Fluorine is an important and necessary trace element in the human body. It can participate in the important process of human tooth enamel and bone calcification, but excessive fluoride can cause a lot of harm to the human body. Long-term drinking of high-fluoride water can cause fluorosis and dental fluorosis, and in more serious cases, it can also cause fluoride poisoning and some diseases of other organs and nervous system in the body.

[0003] The prior art discloses a nuclear crystal granulation-advanced oxidation coupling process for synergistically removing high-concentration fluoride ions and difficult-to-degrade organic matter in wastewater. The process converts high-concentration fluoride ions in wastewater into insoluble substances through induced crystallization technology. At the same time, when induced crystallization is performed to treat fluoride ions, the difficult-to-degrade organic matter in the water is adsorbed and oxidized through the adsorption points activated on the surface of the induced crystal carrier, thereby achieving the purpose of removing fluoride ions and difficult-to-degrade organic matter in the water.

[0004] During the water treatment process of this process, the fluidization state of the crystal-inducing carrier inside the system has an important influence on the treatment effect, so it is necessary to precisely control its water inlet flow rate to obtain the best removal effect; in addition, during the operation of the system, as fluoride ions are removed and difficult-to-degrade organic matter in the water is adsorbed, the particle size of the surface of some crystal-inducing carriers will continue to increase to form large-particle crystals, and some crystalline particles with smaller particle sizes will flow out of the system with the rising water flow due to poor sedimentation properties, which will affect the effluent quality and limit the further improvement of the system's rising flow rate and treatment capacity. Utility Model Content

[0005] The purpose of the utility model is to provide a device for removing high-concentration fluoride ions and organic matter in water, which can adjust the fluidization state of the crystal-inducing carrier, improve the removal efficiency of pollutants in water, improve the stability of the water quality of the system effluent, and enhance the adaptability of the device to different water quality and water quantity conditions.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] The utility model provides a device for removing high-concentration fluoride ions and organic matter in water, comprising: an outer cylinder and an inner cylinder, the inner cylinder is arranged inside the outer cylinder, a reaction layer is formed between the bottoms of the inner cylinder and the outer cylinder, a separation layer is formed between the tops of the inner cylinder and the outer cylinder, the reaction layer is communicated with the separation layer, a crystal-inducing carrier is arranged in the reaction layer, a water inlet pipe and a feeding pipe are arranged on the outer cylinder, the water inlet pipe and the feeding pipe are communicated with the reaction layer respectively, a fluidization regulating component for regulating the fluidization state of the crystal-inducing carrier in the reaction layer is arranged at the water inlet pipe, a crystal discharge pipe is arranged at the bottom of the outer cylinder, the crystal discharge pipe is communicated with the reaction layer, a water outlet is arranged at the top of the outer cylinder, the water outlet is communicated with the separation layer, and a precipitation adsorption component is arranged at the water outlet.

[0008] Furthermore, the fluidization regulation component includes a flow meter and a water distributor. The flow meter is arranged on the water inlet pipe, the water distributor is arranged in the reaction layer, and the water distributor is connected to the water inlet pipe.

[0009] Furthermore, the sedimentation adsorption assembly includes a plurality of sedimentation plates, a plurality of sedimentation plates are arranged obliquely, a plurality of sedimentation plates are arranged crisscross at the water outlet to form a sedimentation net, and an adsorption layer is arranged on the surface of a plurality of sedimentation plates.

[0010] Furthermore, an annular water collecting plate is provided at the water outlet, and a water outlet trough is provided on the water collecting plate.

[0011] Furthermore, a plurality of filter holes are provided on the inner cylinder, and the reaction layer and the separation layer are connected through the filter holes.

[0012] Furthermore, the inner cylinder is through-connected from top to bottom, a first through hole is provided at the top of the inner cylinder, a second through hole is provided at the bottom of the inner cylinder, the reaction layer and the separation layer are connected through the first through hole and the second through hole, and the diameter of the first through hole is smaller than the diameter of the second through hole.

[0013] Furthermore, an oxidizing agent and a precipitating agent are also provided in the reaction layer, and the crystal-inducing carrier, the oxidizing agent and the precipitating agent are all added into the reaction layer through a feeding pipe.

[0014] Furthermore, the wastewater entering the water inlet pipe is high-concentration fluoride ion wastewater.

[0015] Compared with the prior art, the beneficial effects of the utility model are: it can adjust the fluidization state of the crystal-inducing carrier, optimize the fluidization state of the crystal-inducing carrier, improve the removal efficiency of pollutants in the water, improve the stability of the system's effluent water quality, and enhance the adaptability of the device to different water quality and water quantity conditions.

[0016] The utility model provides a device for removing high-concentration fluoride ions and organic matter in water. The inner cylinder is provided to divide the interior of the outer cylinder into a reaction layer and a separation layer. High-concentration fluoride ion water reacts in the reaction layer. The large-volume solids are simply separated in the reaction layer by the inner cylinder for subsequent discharge through a crystal discharge pipe. The fluidization state of the crystal-inducing carrier in the reaction layer is adjusted by a fluidization adjustment component to optimize the fluidization state of the crystal-inducing carrier so that the crystal-inducing carrier can better react with the high-concentration fluoride ion water, thereby improving the removal effect of fluoride ions in the water. A precipitation adsorption component is provided at the water outlet to process the water at the water outlet again, and small-volume solids that may enter the separation layer through the inner cylinder are precipitated and adsorbed, thereby improving the quality of the effluent water and ensuring the stability of the effluent water. The water inlet is accurately controlled by a flow meter and the water inlet is accurately and evenly distributed by a water distributor, thereby making the crystal-inducing carrier in the reaction layer in a fluidized state and improving the water quality. The invention has the advantages of removing fluoride ions in water; by arranging a plurality of sedimentation plates in a crisscross pattern to form a sedimentation net, tilting a plurality of sedimentation plates and arranging an adsorption layer on the surface, filtering and precipitating the water at the water outlet again, improving the water quality of the water outlet while ensuring the stability of the water outlet; arranging a circular water collecting plate at the water outlet and opening a water outlet trough on the water collecting plate, so that the water flowing out of the water outlet can flow out through the water outlet trough after a longer period of precipitation while storing water; arranging a plurality of filter holes on the inner cylinder to connect the reaction layer and the separation layer, so as to separate the solid and the liquid; penetrating the inner cylinder from top to bottom, connecting the reaction layer and the separation layer through the first through hole and the second through hole, and isolating the large volume of solid in the reaction layer; arranging a crystal-inducing carrier, an oxidizing agent and a precipitating agent in the reaction layer to react with the high concentration of fluoride ions and organic matter in the water, so as to remove the high concentration of fluoride ions and organic matter in the water, and the crystal-inducing carrier, the oxidizing agent and the precipitating agent can be added through the feeding pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 A schematic diagram of the structure of a device for removing high-concentration fluoride ions and organic matter in water provided by an embodiment of the utility model;

[0018] Figure 2 for Figure 1 Schematic diagram of the top view structure.

[0019] The markings in the attached drawings are: 1. outer cylinder; 2. inner cylinder; 3. reaction layer; 4. separation layer; 5. water inlet pipe; 6. feeding pipe; 7. crystal discharge pipe; 8. water outlet; 9. flow meter; 10. water distributor; 11. sedimentation plate; 12. sedimentation net; 13. water collecting plate; 14. water outlet trough; 15. first through hole; 16. second through hole. DETAILED DESCRIPTION

[0020] The technical solution of the present application is further described in detail below in conjunction with specific implementation methods.

[0021] The embodiments of the present application are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements with the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present application, and should not be construed as limitations on the present application. In the absence of conflict, the embodiments of the present application and the technical features in the embodiments may be combined with each other.

[0022] Embodiment 1:

[0023] This embodiment provides a device for removing high-concentration fluoride ions and organic matter in water, which can accurately adjust the fluidization state of the crystal-inducing carrier, optimize the fluidization state of the crystal-inducing carrier, improve the removal efficiency of pollutants in water, improve the stability of the water quality of the system effluent, improve the adaptability of the device to different water quality and water quantity conditions, improve the removal effect of high-concentration fluoride ions in water, improve the effluent water quality and ensure the stability of the effluent, such as Figure 1-2As shown, a device for removing high-concentration fluoride ions and organic matter in water comprises: an outer cylinder 1 and an inner cylinder 2, wherein the inner cylinder 2 is arranged inside the outer cylinder 1, the inner cylinder 2 and the outer cylinder 1 are arranged coaxially, a reaction layer 3 is formed between the bottom of the inner cylinder 2 and the outer cylinder 1, a separation layer 4 is formed between the top of the inner cylinder 2 and the outer cylinder 1, the reaction layer 3 is connected to the separation layer 4, a crystal-inducing carrier, an oxidizing agent and a precipitating agent are arranged in the reaction layer 3, and the high-concentration fluoride ions and organic matter in the water are removed by arranging the crystal-inducing carrier, the oxidizing agent and the precipitating agent in the reaction layer 3. The organic matter reacts in the reaction layer 3, thereby removing high-concentration fluoride ions and organic matter in the water. The inner cylinder 2 is provided to divide the interior of the outer cylinder 1 into a reaction layer 3 and a separation layer 4. The inner cylinder 2 simply separates the large volume solid in the reaction layer 3 for subsequent discharge through the crystal discharge pipe 7. The outer cylinder 1 is provided with a water inlet pipe 5 and a feeding pipe 6, which are respectively connected to the reaction layer 3. The crystal inducing carrier, oxidizing agent and precipitating agent can be added to the reaction layer 3 through the feeding pipe 6. The feeding pipe 6 can be arranged at an angle, and the high-concentration solid can be discharged through the crystal discharge pipe 7. The fluoride ion wastewater enters the reaction layer 3 through the water inlet pipe 5. The water inlet pipe 5 is provided with a fluidization regulating component for regulating the fluidization state of the crystal-inducing carrier in the reaction layer 3. The fluidization regulating component includes a flow meter 9 and a water distributor 10. The flow meter 9 is arranged on the water inlet pipe 5. The water distributor 10 is arranged in the reaction layer 3. The water distributor 10 is connected to the water inlet pipe 5. The flow meter 9 accurately controls the water inflow and the water distributor 10 accurately and evenly distributes the water inflow, so that the crystal-inducing carrier, oxidizing agent and precipitating agent in the reaction layer 3 are uniformly distributed. The crystal inducing carrier is in a fluidized state, so that the crystal inducing carrier, the oxidizing agent and the crystal inducing carrier of the precipitating agent in the reaction layer 3 can better contact and react with the high-concentration fluoride ion water, thereby improving the removal effect of high-concentration fluoride ions in the water. A crystal discharge pipe 7 is provided at the bottom of the outer cylinder 1, and the crystal discharge pipe 7 is connected to the reaction layer 3. A water outlet 8 is provided at the top of the outer cylinder 1, and the water outlet 8 is connected to the separation layer 4. A precipitation adsorption component is detachably provided at the water outlet 8, and the precipitation adsorption component includes a plurality of precipitation plates 11, and the plurality of precipitation plates 11 are inclinedly arranged, such as Figure 2As shown, a plurality of sedimentation plates 11 are arranged in a crisscross pattern at the water outlet 8 to form a sedimentation net 12. An adsorption layer is arranged on the surface of the plurality of sedimentation plates 11. By detachably arranging a sedimentation adsorption component, it is convenient to clean the sediment on the sedimentation adsorption component to ensure the normal operation of the device. By arranging a plurality of sedimentation plates 11 in a crisscross pattern to form a sedimentation net 12, the sedimentation net 12 can be clamped at the water outlet 8 for easy disassembly and assembly. The plurality of sedimentation plates 11 are arranged obliquely and adsorption layers are arranged on the surface. The water at the water outlet 8 is filtered and precipitated again, and small-volume solid precipitates that may enter the separation layer 4 through the inner cylinder 2 are adsorbed, thereby improving the quality of the effluent water and ensuring the stability of the effluent water. In this embodiment, the crystal-inducing carrier is usually selected from natural mineral particles of a certain particle size distribution with stable properties, large specific surface area, and low cost and easy to obtain, usually garnet, calcite and fluorite, etc., and the dosage of the crystal-inducing carrier is controlled to be 2.5~3g / L; the precipitating agent can be calcium ion salts, usually calcium chloride is selected as the precipitating agent, and the dosage of the precipitating agent is controlled to be 160~180mg / L, the oxidizing agent is selected from commonly used agents in the field of water treatment, usually hydrogen peroxide and persulfate, etc., and the dosage of the oxidizing agent is 6~8mmol / L; the particle size of the crystal-inducing carrier is controlled to be 250~300μm, and the crystal-inducing carrier needs to be activated during water treatment.

[0024] like Figure 1 As shown, in this embodiment, an annular water collecting plate 13 is provided at the water outlet 8, and a water outlet trough 14 is opened on the water collecting plate 13. An annular water collecting plate 13 is provided at the water outlet 8 and a water outlet trough 14 is opened on the water collecting plate 13. While storing water, the water flowing out of the water outlet 8 can flow out through the water outlet 14 after a longer period of sedimentation.

[0025] like Figure 1 As shown, in this embodiment, the inner cylinder 2 is arranged to be through-connected from top to bottom, a first through hole 15 is opened at the top of the inner cylinder 2, and a second through hole 16 is opened at the bottom of the inner cylinder 2. The reaction layer 3 and the separation layer 4 are connected through the first through hole 15 and the second through hole 16. The diameter of the first through hole 15 is smaller than the diameter of the second through hole 16, and the inner cylinder 2 is connected from top to bottom. The reaction layer 3 and the separation layer 4 are connected through the first through hole 15 and the second through hole 16, so that the large volume of solid is isolated in the reaction layer 3.

[0026] Embodiment 2:

[0027] This embodiment provides a device for removing high concentrations of fluoride ions and organic matter in water, such as Figure 1 As shown, different from Example 1, a plurality of filter holes are provided on the inner cylinder 2, and the reaction layer 3 and the separation layer 4 are connected through the filter holes. By providing a plurality of filter holes on the inner cylinder 2 to connect the reaction layer 3 and the separation layer 4, the solid and the liquid are separated.

[0028] When using the device, a crystal-inducing carrier, a precipitating agent and an oxidizing agent are pre-dosed into the inner tube 2 through the feeding pipe 6. The crystal-inducing carrier, the precipitating agent and the oxidizing agent enter the reaction layer 3 through the feeding pipe 6. High-concentration fluoride ion wastewater enters the reaction layer 3 through the water inlet pipe 5. Under the joint action of the pre-dosed crystal-inducing carrier, the precipitating agent and the oxidizing agent, the high-concentration fluoride ions in the water react chemically and generate precipitates attached to the surface of the crystal-inducing carrier, thereby being removed. When the high-concentration fluoride ion wastewater enters the reaction layer 3 through the water inlet pipe 5, the inlet flow rate is precisely controlled by the flow meter 9, and the inlet water is accurately and evenly distributed by the water distributor 10, so as to obtain the best fluidization state of the crystal-inducing carrier and other crystal-inducing carriers in the reaction layer 3. The precipitating agent and the oxidizing agent are added to the reaction layer 3 through the feeding pipe 6. The precipitating agent can be a calcium ion salt, and calcium chloride is usually selected as the precipitating agent. The amount of the precipitating agent is controlled. The concentration of fluoride in the high-concentration fluoride wastewater reacts with calcium ions to generate calcium fluoride which is insoluble in water and adheres to the surface of the crystal-inducing carrier. The crystal-inducing carrier has a certain adsorption effect in water, adsorbs the difficult-to-degrade organic matter in the water, and then oxidizes and degrades it through the action of the oxidizing agent. As the reaction in the reaction layer 3 continues to run, the particle size of the crystal-inducing carrier gradually increases and is deposited at the bottom of the outer cylinder 1. It can be regularly discharged and cleaned through the crystal discharge pipe 7. The treated water is separated from the solid by the inner cylinder 2 and the precipitation adsorption component. The crystals that have not been effectively settled in the water are further removed by the precipitation adsorption component. The treated water passes through the annular water collecting plate 13 and is discharged through the water outlet trough 14. The precipitating agent and the oxidizing agent can be flexibly configured according to the fluoride concentration in the high-concentration fluoride wastewater and the water outlet requirements before entering the feeding pipe 6. After being evenly mixed, they are added to the reaction layer 3 through the feeding pipe 6.

[0029] The above are only preferred implementations of the utility model. It should be pointed out that for those skilled in the art, several modifications and improvements can be made without departing from the concept of the utility model. These should also be regarded as the protection scope of the utility model. These will not affect the effect of the implementation of the utility model and the practicality of the patent.

Claims

1. A device for removing high concentration fluoride ions and organic matter in water, characterized in that: include: An outer cylinder (1) and an inner cylinder (2), wherein the inner cylinder (2) is arranged inside the outer cylinder (1), a reaction layer (3) is formed between the bottoms of the inner cylinder (2) and the outer cylinder (1), a separation layer (4) is formed between the tops of the inner cylinder (2) and the outer cylinder (1), the reaction layer (3) is connected to the separation layer (4), a crystal inducing carrier is arranged in the reaction layer (3), and a water inlet pipe (5) and a feeding pipe (6) are arranged on the outer cylinder (1), and the water inlet pipe (5) and the feeding pipe (6) are connected to each other. The pipes (6) are respectively connected to the reaction layers (3); the water inlet pipe (5) is provided with a fluidization adjustment component for adjusting the fluidization state of the crystal-inducing carrier in the reaction layer (3); the bottom of the outer cylinder (1) is provided with a crystal discharge pipe (7), and the crystal discharge pipe (7) is connected to the reaction layer (3); the top of the outer cylinder (1) is provided with a water outlet (8), and the water outlet (8) is connected to the separation layer (4); and a precipitation adsorption component is arranged at the water outlet (8).

2. The device for removing high-concentration fluoride ions and organic matter in water according to claim 1, characterized in that: The fluidization regulating assembly comprises a flow meter (9) and a water distributor (10); the flow meter (9) is arranged on the water inlet pipe (5); the water distributor (10) is arranged in the reaction layer (3); and the water distributor (10) is in communication with the water inlet pipe (5).

3. The device for removing high-concentration fluoride ions and organic matter in water according to claim 1, characterized in that: The sedimentation adsorption assembly comprises a plurality of sedimentation plates (11), wherein the plurality of sedimentation plates (11) are arranged obliquely, and the plurality of sedimentation plates (11) are arranged in a crisscross pattern at the water outlet (8) to form a sedimentation net (12), and adsorption layers are arranged on the surfaces of the plurality of sedimentation plates (11).

4. The device for removing high-concentration fluoride ions and organic matter in water according to claim 1, characterized in that: An annular water collecting plate (13) is provided at the water outlet (8), and a water outlet groove (14) is provided on the water collecting plate (13).

5. The device for removing high-concentration fluoride ions and organic matter in water according to claim 1, characterized in that: The inner cylinder (2) is provided with a plurality of filter holes, and the reaction layer (3) and the separation layer (4) are connected through the filter holes.

6. The device for removing high-concentration fluoride ions and organic matter in water according to claim 1, characterized in that: The inner cylinder (2) is arranged to be through-connected from top to bottom, a first through hole (15) is provided at the top of the inner cylinder (2), and a second through hole (16) is provided at the bottom of the inner cylinder (2), the reaction layer (3) and the separation layer (4) are connected via the first through hole (15) and the second through hole (16), and the diameter of the first through hole (15) is smaller than the diameter of the second through hole (16).

7. The device for removing high-concentration fluoride ions and organic matter in water according to claim 1, characterized in that: The reaction layer (3) is also provided with an oxidizing agent and a precipitating agent. The crystal-inducing carrier, the oxidizing agent and the precipitating agent are all added into the reaction layer (3) through the feeding pipe (6).

8. The device for removing high-concentration fluoride ions and organic matter in water according to claim 1, characterized in that: The water entering the water inlet pipe (5) is wastewater with a high concentration of fluoride ions.

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