A fluidized bed fluoride-containing wastewater treatment system

Abstract

This invention discloses a fluidized bed fluoride-containing wastewater treatment system, comprising a tank, an inlet pipe at the top of the tank, an outlet pipe on the side of the tank, placement blocks fixedly connected to the inner walls of both sides of the tank, a filter screen on top of each placement block, an installation assembly at the connection between the filter screen and the tank, cleaning assemblies on both sides of the filter screen, and three fluidized bed reactors arranged outside the tank, namely a first fluidized bed reactor, a second fluidized bed reactor, and a third fluidized bed reactor. This invention can efficiently treat fluoride-containing wastewater and remove solid impurities from the wastewater, improving the treatment effect of fluoride-containing wastewater.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of fluidized bed fluorine-containing wastewater treatment, in particular to a fluidized bed fluorine-containing wastewater treatment system. BACKGROUND

[0002] With the increasing industrial production activities, the discharge amount of various pollutants also increases, especially the fluorine-containing wastewater becomes the focus of environmental protection due to its unique chemical properties and potential hazards. At present, the treatment methods for fluorine-containing wastewater mainly include chemical precipitation method, adsorption method, ion exchange method, electrodialysis method and other ways. These treatment technologies have their own advantages, meet the needs of different industries to some extent, and also promote the development of environmental protection work.

[0003] The chemical precipitation method removes fluorine ions by adding calcium salt or aluminum salt and other reagents to form insoluble compounds; the adsorption method uses the large number of active sites on the surface of activated carbon, zeolite and other porous substances to adsorb fluorine ions; ion exchange relies on cation resin to capture fluoride in water and replace it out; and electrodialysis drives the migration of charged fluorine ions to a specific area by the action of a direct current field, thereby achieving the purpose of separation and purification. However, the above-mentioned methods can effectively reduce the fluorine content in wastewater, but still have problems of high cost and low efficiency. For example, the chemical precipitation method can significantly reduce the fluorine content, but the reaction speed is slow and a long time is needed to achieve the ideal precipitation effect, and the subsequent sludge treatment is also a difficult problem. For example, the adsorption method is simple to operate, but it is easy to saturate and fail in actual application, and the adsorption material needs to be replaced regularly, which increases the operation and maintenance cost. In addition, there may be solid impurities in fluorine-containing wastewater, which will affect the treatment of fluorine-containing wastewater if not removed. SUMMARY

[0004] The purpose of the present application is to solve the problems existing in the prior art, and to provide a fluidized bed fluorine-containing wastewater treatment system to solve the problems of slow reaction speed, the need to replace adsorption materials regularly and the inability to remove solid impurities in fluorine-containing wastewater in the above technical solutions.

[0005] A fluidized bed fluorine-containing wastewater treatment system, comprising: a box body, a water inlet pipe is arranged at the top of the box body, a water outlet pipe is arranged at the lower half of the side of the box body, a placing block is fixedly connected to the inner wall of both sides of the box body, a filter screen is arranged at the top of the placing block, an installation assembly is arranged at the connection between the filter screen and the box body, a cleaning assembly is arranged at both sides of the filter screen, three fluidized bed reactors are arranged outside the box body, the three fluidized bed reactors are respectively a first fluidized bed reactor, a second fluidized bed reactor and a third fluidized bed reactor, a reagent inlet pipe is arranged at the top of each fluidized bed reactor, a reagent pipe is arranged at the top of each reagent inlet pipe, and the reagent in the reagent pipe is a defluorination reagent.

[0006] In some examples, the water outlet pipe is provided with a connecting pipe at one end away from the box body, and the connecting pipe is provided with a water inlet main pipeline at one end away from the water outlet pipe.

[0007] In some examples, the top of each of the three fluidized bed reactors is provided with a water inlet and a water outlet on both sides, respectively, the water inlet of the first fluidized bed reactor is connected with the connecting pipe, the water outlet of the first fluidized bed reactor is connected with the water inlet main pipeline, the water inlets and water outlets of the second and third fluidized bed reactors are connected with the water inlet main pipeline, the bottom of each of the fluidized bed reactors is provided with a sewage outlet, each of the sewage outlets is provided with an electromagnetic valve inside, and the bottom of each of the sewage outlets is provided with a sewage pipe.

[0008] In some examples, the inside of each of the three fluidized bed reactors is provided with a flow guide pipe, the inside of each of the flow guide pipes is provided with a flow inducer, and the inside of each of the fluidized bed reactors is provided with a flow disturbance assembly.

[0009] In some examples, the flow disturbance assembly comprises a vertical plate, the vertical plate is fixedly connected with the top end inside the fluidized bed reactor, a flow disturbance plate is arranged below the vertical plate, mounting blocks are arranged on both sides of the top of the flow disturbance plate, a rotating shaft is arranged inside the bottom end of the vertical plate, the rotating shaft penetrates through the vertical plate and the mounting blocks, the rotating shaft is rotatably connected with the mounting blocks, a motor is arranged outside the fluidized bed reactor, and the output shaft of the motor is fixedly connected with the rotating shaft.

[0010] In some examples, the mounting assembly comprises a mounting groove, a mounting seat, a mounting hole, a connecting groove and a mounting rod, the mounting groove penetrates through the inner wall of one side of the box body, the mounting seat is fixedly connected with one side of the filter screen and is adapted in size to the mounting groove, the mounting hole penetrates through the mounting seat, the connecting groove is arranged on the top inner wall of the mounting groove, and the mounting rod is slidably connected with the connecting groove and is adapted in size to the mounting hole.

[0011] In some examples, the mounting assembly further comprises a sliding groove, a sliding block, a spring and a pull rod, the sliding groove is arranged on the surface of one side of the box body and is in communication with the connecting groove, the sliding block is fixedly connected with the top of the mounting rod and is slidably connected with the sliding groove, the spring is arranged inside the sliding groove and is fixedly connected at both ends with the top of the sliding block and the top inner wall of the sliding groove, respectively, and the pull rod is fixedly connected with the outer end of the sliding block.

[0012] In some examples, the cleaning assembly comprises a first mounting box, an electric push rod, a push plate and a brush, the first mounting box is fixedly connected to one side of the box and communicates with the internal cavity of the box, the electric push rod is installed in the first mounting box, the push plate is fixedly connected to the drive shaft of the electric push rod, and the brush is fixedly connected to the bottom of the push plate.

[0013] In some examples, the cleaning assembly further comprises a second mounting box, a baffle and a collection box, the second mounting box is fixedly connected to the other side of the box and communicates with the internal cavity of the box, the baffle is rotatably connected to the connection between the second mounting box and the box and is adapted in size, and the collection box is slidably connected to the second mounting box.

[0014] Compared with the prior art, the present application has at least the following beneficial effects:

[0015] I. Pulling the pull rod upward makes it drive the sliding block to slide upward along the sliding groove and press the spring, when the mounting rod moves upward into the connecting groove with the sliding block, the filter screen is placed on the top of the placing block through the mounting slot and the mounting seat is immersed into the mounting slot, then the pull rod is released, the spring rebounds and drives the mounting rod downward through the sliding block, when the mounting rod is inserted into the mounting hole, the mounting seat can be fixed in the mounting slot, thereby completing the installation of the filter screen, pulling the pull rod upward again makes it drive the mounting rod to move upward into the mounting hole and move out, then pulling the mounting seat outward can take out the filter screen, this design can make the installation and disassembly of the filter screen more simple and fast.

[0016] II. Starting the electric push rod makes it drive the push plate and the brush to move horizontally, the push plate and the brush can brush out and push away the solid impurities on the surface and the pore diameter of the filter screen during the movement, when the solid impurities move into contact with the baffle, the bottom of the baffle will be lifted up because the top of the baffle is rotatably connected to the connection between the second mounting box and the box, at this time, the push plate and the brush can push the solid impurities into the collection box for collection, this design can clean the solid impurities accumulated on the surface of the filter screen and effectively avoid the blockage of the filter screen affecting the filtering effect.

[0017] 3. The filtered fluoride-containing wastewater enters the primary fluidized bed reactor through the outlet pipe, connecting pipe, and inlet. Then, the defluoridating agent is injected into the primary fluidized bed reactor through the reagent pipe and reagent inlet pipe. By starting the flow promoter, the wastewater is fluidized in the reactor. Then, the motor is started, causing the rotating shaft to rotate at the bottom of the vertical plate, thereby changing the angle of the baffle plate and thus changing the direction of the turbulence. The wastewater that has undergone primary treatment is discharged from the outlet and enters the main inlet pipe. Then, it re-enters the secondary fluidized bed reactor for further treatment. The wastewater after secondary treatment then enters the tertiary fluidized bed reactor to ensure that fluoride ions are fully removed, thereby improving the treatment effect of the device on fluoride-containing wastewater. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of the fluidized bed fluoride-containing wastewater treatment system of the present invention;

[0019] Figure 2 This is a schematic diagram of the structure of a fluidized bed reactor in a fluidized bed fluoride-containing wastewater treatment system according to the present invention;

[0020] Figure 3 This is a schematic diagram of the installation components in a fluidized bed fluoride-containing wastewater treatment system according to the present invention;

[0021] Figure 4 This invention relates to a fluidized bed fluoride-containing wastewater treatment system. Figure 3 Enlarged view of point A in the middle;

[0022] Figure 5 This is a schematic diagram of the cleaning component in a fluidized bed fluoride-containing wastewater treatment system according to the present invention;

[0023] Figure 6 This is a schematic diagram of the structure of a baffle plate in a fluidized bed fluoride-containing wastewater treatment system according to the present invention. Figure 1 ;

[0024] Figure 7 This is a schematic diagram of the structure of a baffle plate in a fluidized bed fluoride-containing wastewater treatment system according to the present invention. Figure 2 ;

[0025] Explanation of reference numerals in the attached figures:

[0026] 1. Housing; 2. Inlet pipe; 3. Outlet pipe; 4. Placement block; 5. Filter screen; 6. Mounting assembly; 61. Mounting slot; 62. Mounting base; 63. Mounting hole; 64. Connecting slot; 65. Mounting rod; 66. Slide groove; 67. Slider; 68. Spring; 69. Pull rod; 7. Cleaning assembly; 71. First mounting box; 72. Electric push rod; 73. Push plate; 74. Brush; 75. Second mounting box; 76. 77. Baffle; 8. Collection box; 9. Fluidized bed reactor; 10. Inlet; 11. Outlet; 12. Turbulence component; 13. Vertical plate; 24. Mounting block; 15. Rotating shaft; 26. Turbulence plate; 27. Motor; 38. Guide pipe; 49. Flow promoter; 20. Sewage outlet; 30. Sewage pipe; 40. Connecting pipe; 51. Main inlet pipe; 62. Chemical pipe; 73. Chemical inlet pipe. Detailed Implementation

[0027] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention. Example

[0028] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 and Figure 7 As shown, the present invention provides a technical solution: a fluidized bed fluoride-containing wastewater treatment system, comprising: a tank 1, an inlet pipe 2 installed at the top of the tank 1, an outlet pipe 3 installed on the lower half of the side of the tank 1, placement blocks 4 fixedly connected to the inner walls of both sides of the tank 1, a filter screen 5 installed on the top of the placement block 4, an installation component 6 installed at the connection between the filter screen 5 and the tank 1, cleaning components 7 installed on both sides of the filter screen 5, and three fluidized bed reactors 8 installed on the outside of the tank 1, the three fluidized bed reactors 8 being the first fluidized bed reactors. The system comprises a first fluidized bed reactor, a second fluidized bed reactor, and a third fluidized bed reactor. Each fluidized bed reactor 8 is equipped with a reagent inlet pipe 12 at its top, and each reagent inlet pipe 12 is equipped with a reagent tube 11 at its top. The reagent inside the reagent tube 11 is a defluorination agent, which is a mixture of calcium salt and pH adjuster. The reagent inlet pipe 12 is used to add calcium salt and pH adjuster. The calcium salt is generally a 5% (w / w) calcium chloride solution. The specific dosage and retention time need to be determined based on the fluoride ion concentration, alkalinity, and hardness of the wastewater.

[0029] like Figure 1 Figure 2As shown in the illustration, in this embodiment, it is necessary to further explain that a connecting pipe 9 is provided at the end of the outlet pipe 3 away from the tank 1, and a main inlet pipe 10 is provided at the end of the connecting pipe 9 away from the outlet pipe 3. The internal structures of the three fluidized bed reactors 8 are all the same. Inlet 81 and outlet 82 are respectively provided on both sides of the top of the three fluidized bed reactors 8. The inlet 81 of the first fluidized bed reactor is connected to the connecting pipe 9, and the outlet 82 of the first fluidized bed reactor is connected to the main inlet pipe 10. The second fluidized bed reactor and the third fluidized bed reactor... The inlet 81 and outlet 82 of the fluidized bed reactor are both connected to the main water inlet pipe 10. Each outlet 82 is equipped with a liquid pump. Each fluidized bed reactor 8 has a drain outlet 86 at the bottom. Each drain outlet 86 is equipped with a solenoid valve. Each drain outlet 86 has a drain pipe 87 at the bottom. Each of the three fluidized bed reactors 8 has a flow guide pipe 84 inside. Each flow guide pipe 84 has a flow propeller 85 inside. Each fluidized bed reactor 8 has a flow turbulence component 83 inside.

[0030] like Figure 6 and Figure 7 As shown in the example, the turbulence-inducing component 83 includes a vertical plate 8301, which is fixedly connected to the top of the fluidized bed reactor 8. A turbulence-inducing plate 8304 is located below the vertical plate 8301, and mounting blocks 8302 are located on both sides of the top of the turbulence-inducing plate 8304. A rotating shaft 8303 is located inside the bottom of the vertical plate 8301, passing through the vertical plate 8301 and the mounting blocks 8302, and is fixedly connected to the mounting blocks 8302. The rotating shaft 8303 is rotatably connected to the vertical plate 8301. A motor 8305 is located on the outside of the fluidized bed reactor 8, and the output shaft of the motor 8305 is fixedly connected to the rotating shaft 8303. The filtered fluoride-containing wastewater flows through the outlet pipe 3, the connecting pipe 9, and the inlet 81. The wastewater enters the first fluidized bed reactor, and then the defluoridating agent is injected into the first fluidized bed reactor through the agent pipe 11 and the agent inlet pipe 12. By starting the flow promoter 85, the wastewater is made into a fluidized state in the reactor. Then, the motor 8305 is started, and the motor 8305 drives the rotating shaft 8303 to rotate at the bottom of the vertical plate 8301, thereby changing the angle of the baffle plate 8304 and thus changing the direction of the turbulence. The wastewater that has undergone primary treatment is pumped out by an external pump and discharged from the outlet 82 and enters the main inlet pipe 10. Then it re-enters the second fluidized bed reactor for further treatment. The wastewater after secondary treatment enters the third fluidized bed reactor to ensure that fluoride ions are fully removed, thereby improving the treatment effect of the device on fluoride-containing wastewater.

[0031] like Figure 3 , Figure 4 and Figure 5As shown in the example, the installation component 6 includes an installation groove 61, an installation base 62, an installation hole 63, a connecting groove 64, and an installation rod 65. The installation groove 61 extends through the inner wall of one side of the housing 1. The installation base 62 is fixedly connected to one side of the filter screen 5 and is adapted to the size of the installation groove 61. A sealing element is provided at the location of the installation groove 61 on the housing 1 to prevent liquid leakage from the inside of the housing 1 and increase the sealing performance of the housing 1. The installation hole 63 extends through the installation base 62. The connecting groove 64 is opened on the top inner wall of the installation groove 61. The installation rod 65 is slidably connected to the connecting groove 64 and is adapted to the size of the installation hole 63. The installation component 6 also includes a sliding groove 66, a slider 67, a spring 68, and a pull rod 69. The sliding groove 66 is opened on one side surface of the housing 1 and communicates with the connecting groove 64. The slider 67 is fixedly connected to the top of the installation rod 65 and slidably connected to the sliding groove 66. The spring 68 is installed inside the sliding groove 66 and has two ends. The mounting rod 65 is fixedly connected to the top of the slider 67 and the inner wall of the top of the slide groove 66. The pull rod 69 is fixedly connected to the outer end of the slider 67. Pulling the pull rod 69 upward causes the slider 67 to slide upward along the slide groove 66 and compress the spring 68. When the mounting rod 65 moves upward with the slider 67 and is inserted into the connecting groove 64, the filter screen 5 is placed on the top of the placement block 4 through the mounting groove 61 and the mounting seat 62 is inserted into the mounting groove 61. Then, the pull rod 69 is released, the spring 68 rebounds and drives the mounting rod 65 downward through the slider 67. When the mounting rod 65 is inserted into the mounting hole 63, the mounting seat 62 is fixed in the mounting groove 61, thus completing the installation of the filter screen 5. Pulling the pull rod 69 upward again causes the mounting rod 65 to move upward through the slider 67 into the mounting hole 63 and then out. Then, pulling the mounting seat 62 outward can remove the filter screen 5. This design makes the installation and removal of the filter screen 5 simpler and faster.

[0032] like Figure 3 , Figure 4 and Figure 5As shown, the cleaning assembly 7 includes a first mounting box 71, an electric push rod 72, a push plate 73, and a brush 74. The first mounting box 71 is fixedly connected to one side of the housing 1 and communicates with the internal cavity of the housing 1. The electric push rod 72 is installed inside the first mounting box 71. The push plate 73 is fixedly connected to the drive shaft of the electric push rod 72. The brush 74 is fixedly connected to the bottom of the push plate 73. The push plate 73 and the brush 74 are adapted to the connection between the first mounting box 71 and the housing 1 and the size of the filter screen 5. The cleaning assembly 7 also includes a second mounting box 75, a baffle 76, and a collection box 77. The second mounting box 75 is fixedly connected to the other side of the housing 1 and communicates with the internal cavity of the housing 1. The top of the baffle 76 is rotatably connected to the second mounting box 75. 5 is connected to the housing 1 and is sized to fit the filter screen 1. The collection box 77 is slidably connected to the second mounting box 75. The electric push rod 72 is activated to drive the push plate 73 and brush 74 to move horizontally. During the movement, the push plate 73 and brush 74 will brush out the solid impurities on the pore size and surface of the filter screen 5 and push them to the periphery of the push plate 73. When the solid impurities move to contact the baffle 76, the bottom of the baffle 76 will be lifted because the top of the baffle 76 is rotatably connected to the connection between the second mounting box 75 and the housing 1. At this time, the push plate 73 and brush 74 can push the solid impurities into the collection box for collection. This design can clean the solid impurities accumulated on the surface of the filter screen 5 and effectively prevent the filter screen 5 from being blocked and affecting the filtration effect.

[0033] Working principle:

[0034] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7As shown, in this fluidized bed fluoride-containing wastewater treatment system, fluoride-containing wastewater is injected into the tank 1 through the inlet pipe 2. The filter screen 5 traps solid waste in the wastewater on its surface. The filtered wastewater flows out through the outlet pipe 3. The filtered solid particles are then removed by activating the electric push rod 72, which drives the push plate 73 and brush 74 to move horizontally. During this movement, the push plate 73 and brush 74 brush out and push away the solid impurities on the pore size and surface of the filter screen 5. When the solid impurities move to contact the baffle 76, the bottom of the baffle 76 is lifted because the top of the baffle 76 is rotatably connected to the connection between the second mounting box 75 and the tank 1. At this time, the push plate 73 and brush 74 push the solid impurities into the collection box for collection. After the wastewater is fully mixed and reacted with the reagent in the first fluidized bed reactor, the rotating shaft 8303 is driven to rotate by the motor 8305 and enters the second fluidized bed reactor. Further treatment is performed. The wastewater after secondary treatment enters the third fluidized bed reactor to ensure that fluoride ions are fully removed. When it is necessary to replace the filter screen 5, pull the lever 69 upward to make the slider 67 slide upward along the slide groove 66 and squeeze the spring 68. When the mounting rod 65 moves upward with the slider 67 and is submerged in the connecting groove 64, the filter screen 5 is placed on top of the placement block 4 through the mounting groove 61 and the mounting seat 62 is submerged in the mounting groove 61. Then, release the lever 69. The spring 68 rebounds and moves the mounting rod 65 downward through the slider 67. When the mounting rod 65 is inserted into the mounting hole 63, the mounting seat 62 is fixed in the mounting groove 61, thus completing the installation of the filter screen 5. Pull the lever 69 upward again to make the mounting rod 65 move upward through the slider 67 and out of the mounting hole 63. Then, pull the mounting seat 62 outward to remove the filter screen 5 for replacement.

[0035] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments that can be applied to other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present invention without departing from the scope of the present invention shall still fall within the protection scope of the present invention.

Claims

1. A fluidized bed fluorine-containing wastewater treatment system characterized by comprising: 1) a fluidized bed reactor for treating fluorine-containing wastewater, Include: Box (1), the box (1) top is provided with water inlet pipe (2), the box (1) lower half of side edge is provided with water outlet pipe (3), both sides of the box (1) inner wall are fixedly connected with placing block (4), the placing block (4) top is provided with filter screen (5), the filter screen (5) with box (1) connection is provided with installation assembly (6), the filter screen (5) both sides are provided with cleaning assembly (7), the box (1) outside is provided with three fluidized bed reactors (8), the fluidized bed reactor (8) is rectangular reactor, three the fluidized bed reactor (8) is first fluidized bed reactor, second fluidized bed reactor and third fluidized bed reactor respectively, the top of each fluidized bed reactor (8) is provided with medicament inlet pipe (12), the top of each medicament inlet pipe (12) is provided with medicament pipe (11), the medicament inside medicament pipe (11) is defluorination medicament;The water outlet pipe (3) is provided with connecting pipe (9) away from the box (1), the connecting pipe (9) is provided with water inlet main pipe (10) away from the water outlet pipe (3), the internal structure of three fluidized bed reactors (8) is identical;The top of three fluidized bed reactors (8) both sides is provided with water inlet (81) and water outlet (82) respectively, the water inlet (81) of first fluidized bed reactor is connected with connecting pipe (9), the water outlet (82) of first fluidized bed reactor is connected with water inlet main pipe (10), each water outlet (82) is equipped with liquid pump, the water inlet (81) and water outlet (82) of second fluidized bed reactor and third fluidized bed reactor are connected with water inlet main pipe (10), the bottom of each fluidized bed reactor (8) is provided with blowdown (86), each blowdown (86) is provided with electromagnetic valve inside, the bottom of each blowdown (86) is provided with blowdown pipe (87);Three the fluidized bed reactor (8) inside is provided with flow guide pipe (84), each flow guide pipe (84) inside is provided with flow inducer (85), each fluidized bed reactor (8) inside is provided with flow disturbance assembly (83);The flow disturbance assembly (83) includes vertical plate (8301), the vertical plate (8301) is fixedly connected with the inside top of fluidized bed reactor (8), the lower portion of vertical plate (8301) is provided with flow disturbance plate (8304), the top of both sides of flow disturbance plate (8304) is provided with mounting block (8302), the bottom end inside vertical plate (8301) is provided with rotating shaft (8303), the rotating shaft (8303) passes through vertical plate (8301) and mounting block (8302), and the rotating shaft (8303) is fixedly connected with mounting block (8302), the rotating shaft (8303) is rotatably connected with vertical plate (8301), the outside of fluidized bed reactor (8) is provided with motor (8305), the output shaft of motor (8305) is fixedly connected with rotating shaft (8303).

2. The fluidized bed fluorochemical wastewater treatment system of claim 1, wherein, The installation assembly (6) comprises an installation groove (61), an installation base (62), an installation hole (63), a connecting groove (64) and an installation rod (65), the installation groove (61) is through the inner wall of one side of the box (1), the installation base (62) is fixedly connected to one side of the filter screen (5) and is matched with the size of the installation groove (61), the installation hole (63) is through the installation base (62), the connecting groove (64) is arranged on the top inner wall of the installation groove (61), and the installation rod (65) is slidably connected to the connecting groove (64) and is matched with the size of the installation hole (63).

3. The fluidized bed fluorochemical wastewater treatment system of claim 2, wherein, The installation assembly (6) further comprises a sliding groove (66), a sliding block (67), a spring (68) and a pull rod (69), the sliding groove (66) is arranged on the surface of one side of the box (1) and is communicated with the connecting groove (64), the sliding block (67) is fixedly connected to the top of the installation rod (65) and is slidably connected to the sliding groove (66), the spring (68) is arranged in the sliding groove (66) and is fixedly connected to the top of the sliding block (67) and the top inner wall of the sliding groove (66) respectively, and the pull rod (69) is fixedly connected to the outer end of the sliding block (67).

4. The fluidized bed fluorochemical wastewater treatment system of claim 1, wherein, The cleaning assembly (7) comprises a first installation box (71), an electric push rod (72), a push plate (73) and a brush (74), the first installation box (71) is fixedly connected to one side of the box (1) and is communicated with the internal cavity of the box (1), the electric push rod (72) is arranged in the first installation box (71), the push plate (73) is fixedly connected to the driving shaft of the electric push rod (72), the brush (74) is fixedly connected to the bottom of the push plate (73), and the push plate (73) and the brush (74) are matched with the sizes of the first installation box (71) and the box (1) and the filter screen (5).

5. The fluidized bed fluorochemical wastewater treatment system of claim 4, wherein, The cleaning assembly (7) further comprises a second installation box (75), a baffle (76) and a collecting box (77), the second installation box (75) is fixedly connected to the other side of the box (1) and is communicated with the internal cavity of the box (1), the top of the baffle (76) is rotatably connected to the connection part of the second installation box (75) and the box (1) and is matched in size, and the collecting box (77) is slidably connected to the second installation box (75).

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