Fluorine removal reactor capable of intelligently adjusting fluidized bed

Abstract

The invention relates to the technical field of defluorination reactors, and particularly discloses an intelligent adjusting fluidized bed defluorination reactor which comprises a reactor body, a fluorine-containing wastewater tank, a Ca (OH) 2 solution tank, an inflow water concentration ratio and reflux ratio regulator, a first water inlet pump and a second water inlet pump, the fluorine-containing wastewater tank is connected with the first water inlet pump through a pipeline, and the Ca (OH) 2 solution tank is connected with the first water inlet pump through a pipeline; water in the reactor body is collected through the sensor set arranged in the reactor body, the progress and efficiency of fluorine removal operation are analyzed through the data processing module in combination with real-time water information data, and on the premise, the fluorine removal efficiency is improved through the analysis adjustment module in combination with the analysis result of the data processing module. Whether the reaction temperature, the pH value and the water inlet speed of the reactor need to be adjusted or not is decided, and whether the adding content of a precipitator needs to be adjusted or not is further analyzed, so that multidirectional monitoring and adjustment are realized, the fluorine removal efficiency is improved, the recovery of fluorine ions is promoted, and the water environment pollution of fluoride is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of defluorination reactors, in particular to an intelligently adjustable fluidized bed defluorination reactor. Background Art

[0002] In recent years, the fluorine chemical industry has maintained rapid growth. While driving economic growth, it has also brought a large amount of fluorine-containing wastewater. If the fluorine-containing wastewater enters the environment directly, it will seriously affect the activity and mineral composition of microorganisms in the soil and water. In order to avoid this situation, the wastewater is usually concentrated in a fluidized bed defluorination reactor for defluorination before being discharged, thereby ensuring the purification of the discharged wastewater.

[0003] Fluidized bed crystallization is an advanced and efficient technology for removing and recovering fluoride from contaminated industrial wastewater. Fluoride ions are converted into the crystal form of CaF2 by reacting with Ca(OH)2 and separated from the aqueous solution. In this process, parameters such as temperature, pH, and water flow rate are monitored and adjusted in real time to ensure that the growth efficiency and purity of CaF2 crystals are improved and the recovery of fluoride ions is promoted.

[0004] In the prior art, during the defluorination operation, the temperature, pH, water inlet flow rate and other parameters of the water in the reactor are monitored and adjusted in real time to ensure the improvement of the growth efficiency of the CaF2 crystals. However, since the state of the water in the reactor at different time points and the fluorine content are constantly changing, if the amount of precipitant added at different time points is not adjusted, the efficiency of the defluorination operation will still be reduced by only monitoring and adjusting the temperature, pH, water inlet flow rate and other parameters of the water in the reactor in real time. Summary of the invention

[0005] The purpose of the present invention is to provide an intelligently regulated fluidized bed defluorination reactor to solve the following technical problems: How to improve the efficiency of fluorine removal operations.

[0006] The purpose of the present invention can be achieved through the following technical solutions: An intelligently adjustable fluidized bed defluorination reactor comprises a reactor body, a fluorine-containing wastewater tank, a Ca(OH)2 solution tank, an inlet water concentration ratio and a reflux ratio controller, a first inlet water pump and a second inlet water pump, wherein the fluorine-containing wastewater tank is connected to the first inlet water pump through a pipeline, the Ca(OH)2 solution tank is connected to the second inlet water pump through a pipeline, the first inlet water pump and the second inlet water pump are both connected to the inlet water concentration ratio and the reflux ratio controller, the inlet water concentration ratio and the reflux ratio controller is connected to the reactor body, a crystal carrier is arranged in the reactor body, a plurality of lateral water outlets are fixedly connected to one side of the reactor body, a precipitation zone is arranged at the top of the reactor body, a crystal outlet is arranged at the bottom of the reactor body, an aeration pipeline is connected to the bottom of the reactor body, and an aerator is fixedly connected to the other end of the aeration pipeline; A sensor group is arranged inside the reactor body, an intelligent controller is arranged outside the reactor body, the intelligent controller is electrically connected to the sensor group, and an adjustment component and a reflux component are arranged outside the reactor body, the adjustment component is used to adjust the pH value, water temperature and precipitation agent dosage of the water body in the reactor body, and the reflux component is used to control and adjust the reflux of the fluidized bed effluent; The sensor group is used to collect water information in the reactor body. The intelligent controller is provided with a data recording module, a data processing module and an analysis and adjustment module. The data recording module is used to record the water information data collected by the sensor group. The data processing module is used to analyze the reaction state of the reactor body and the growth efficiency of CaF2 crystals in the water body in combination with real-time water body information data; The analysis and adjustment module is used to combine the analysis results of the data processing module to decide whether the reaction temperature, pH value and water inlet rate of the reactor need to be adjusted, and further analyze whether the precipitant addition content needs to be adjusted.

[0007] The regulating assembly includes a heat preservation water inlet, a heat preservation water outlet and a regulating doser arranged outside the reactor body, the regulating doser is connected to the reactor body through a pipeline, the heat preservation water inlet is connected to a peristaltic pump through a pipeline, the peristaltic pump and the heat preservation water outlet are both connected to a constant temperature boiler through pipelines, and the intelligent controller is electrically connected to the sensor group, the regulating doser and the constant temperature boiler; The reflux assembly includes an outlet pipe and a secondary sedimentation tank. The outlet pipe is fixedly connected to the upper end of the reactor body, and the other end of the outlet pipe is fixedly connected to the secondary sedimentation tank. A wastewater outlet is provided on one side of the secondary sedimentation tank. The bottom of the secondary sedimentation tank is connected to a reflux pump through a pipeline, and the reflux pump is connected to an inlet concentration ratio and a reflux ratio regulator through a pipeline.

[0008] The analysis process of the data processing module includes: By formula Calculate the reaction state influence coefficient of the reactor body (23) at the i-th time point ; Among them, i is a data collection at a fixed time interval after the reaction starts, is the water temperature in the reactor body (23) at the i-th time point, is the preset temperature, for The standard value of is the pH value in the reactor body (23) at the i-th time point, To preset pH value, for The standard value of is the water inflow rate in the reactor body (23) at the i-th time point, is the preset water inlet speed, for The standard value of is the correction coefficient, which is set according to empirical fitting.

[0009] The analysis process of the data processing module also includes: By calculating the reaction state influence coefficient of the reactor body (23) at the i-th time point The threshold value of the coefficient of influence of the preset reaction state Make a comparison; like The data recording module determines that there is a problem with the reaction state of the reactor body (23) at this time point, and it is necessary to correct the water temperature, pH value and water inlet speed in the reactor body (23); like The system data recording module determines that there is no problem with the reaction state of the reactor body (23) at this time point, and there is no need to correct the water temperature, pH value and water inlet speed in the reactor body (23).

[0010] The adjustment process of the analysis and adjustment module includes: When it is determined that there is a problem with the reaction state of the reactor body (23) at this time point, the intelligent controller (21) automatically adjusts the heating power of the constant temperature boiler (16) according to the data monitored in real time by the sensor group (20), and automatically adjusts the pH value of the water body in the reactor body (23) according to a preset pH range. Finally, according to the fluorine concentration in the effluent water quality, the flow rate of the water inlet pump and the reflux pump (14) is adjusted to ensure stable operation of the reactor.

[0011] The processing process of the data processing module includes: First, the fluoride crystal content in the water body of the reactor body (23) is monitored in real time by the sensor group (20), and a real-time change curve of the fluoride crystal content in the water body is established based on the real-time monitoring data. ; By formula Calculate the fluoride recovery influence coefficient at the i-th time point ; in, is the fluorine content of the wastewater discharged from the reactor body (23) at the i-th time point after treatment, is the preset fluoride content of the wastewater after treatment. for The standard value of To define a function, if , then let , otherwise, let , is the calcium salt compound content in the water body of the reactor body (23) at the i-th time point, is the preset calcium salt compound content at the i-th time point, is the fluoride crystal content in the water body of the reactor body (23) at time point i, is the preset fluoride crystal content at the i-th time point, is the error influence coefficient, which is set according to empirical fitting. is the proportionality coefficient, which is set according to empirical fitting. is the time point when the reaction starts, is the time point of the i-th data collection.

[0012] The processing process of the data processing module also includes: By calculating the fluoride recovery influence coefficient at the i-th time point The fluoride recovery factor threshold is set Make a comparison; like The data processing module determines that the fluoride recovery efficiency at this time point is low, the growth efficiency of CaF2 crystals in the water body is reduced, and the input amount of the precipitant needs to be adjusted; like The data processing module determines that the fluoride recovery efficiency at this time point is high, the growth efficiency of CaF2 crystals in the water body is improved, and there is no need to adjust the input amount of the precipitant.

[0013] The process of the analysis and adjustment module also includes: By formula Calculate the adjusted precipitant input at the i-th time point ; in, is the preset amount of precipitant input at the i-th time point, To adjust the coefficient comparison table function, according to The influence of the numerical range on the input amount of precipitant is obtained based on testing.

[0014] Beneficial effects of the present invention: (1) The present invention collects water in the reactor body through a sensor group arranged in the reactor body, and analyzes the progress and efficiency of the defluorination operation in combination with real-time water information data through a data processing module. On this premise, through the analysis and adjustment module combined with the analysis results of the data processing module, it is decided whether the reaction temperature, pH value and water inlet speed of the reactor need to be adjusted, and further analyzes whether the precipitant addition content needs to be adjusted, thereby achieving multi-faceted monitoring and adjustment, improving the efficiency of the defluorination operation, promoting the recovery of fluoride ions, and reducing the water environment pollution caused by fluoride.

[0015] (2) The present invention calculates the reaction state influence coefficient of the reactor body at the i-th time point The threshold value of the coefficient of influence of the preset reaction state By comparing, it is possible to determine whether there is a problem with the reaction state of the reactor body at that time point, and to promptly correct the water temperature, pH value and water inlet rate in the reactor body according to the judgment result. By setting it in this way, after the parameters are corrected, it can be preliminarily guaranteed that the efficiency of the defluorination operation will not be reduced, and accurate data can be provided for subsequent judgment on whether the dosage of the precipitant needs to be adjusted, thereby further improving the work efficiency of the defluorination operation.

[0016] (3) The present invention combines the water information data in the reactor body to influence the fluoride recovery coefficient at the i-th time point The data can reflect the extraction rate of fluoride and the efficiency of wastewater defluorination at that time point, and because the data combines the reaction state influence coefficient of the reactor body at the i-th time point Correction can be made, so the accuracy of the data can be improved, thereby providing accurate data support for subsequent judgment on whether the amount of precipitant input needs to be adjusted, thereby ensuring the accuracy of the judgment result.

[0017] (4) The present invention calculates the fluoride recovery influence coefficient at the i-th time point The fluoride recovery factor threshold is set By comparing the results, an accurate judgment can be made on the fluoride recovery efficiency at that point in time. The judgment result can indirectly reflect the defluorination efficiency of fluoride-containing wastewater at the current point in time, thereby making an accurate judgment on whether the current amount of precipitant input is needed, ensuring that the current defluorination operation has good water temperature, pH, and water inlet flow, as well as a suitable amount of precipitant input, thereby improving the efficiency of the defluorination operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The present invention will be further described below in conjunction with the accompanying drawings.

[0019] Figure 1 It is a structural diagram of the reactor body in the present invention; Figure 2 is a flow chart of the adjustment process of the analysis and adjustment module in the present invention; Figure 3 It is a module overview block diagram of the intelligent controller in the present invention.

[0020] Figure numerals: 1. fluorine-containing wastewater tank; 2. first water inlet pump; 3. Ca(OH)2 solution tank; 4. second water inlet pump; 5. inlet concentration ratio and reflux ratio controller; 6. aerator; 7. aeration pipeline; 8. crystal carrier; 9. lateral outlet; 10. sedimentation area; 11. outlet pipe; 12. second sedimentation tank; 13. wastewater outlet; 14. reflux pump; 15. crystal outlet; 16. constant temperature boiler; 17. peristaltic pump; 18. insulation water inlet; 19. insulation water outlet; 20. sensor group; 21. intelligent controller; 22. adjustment doser; 23. reactor body. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0022] See also Figures 1 to 3As shown, in one embodiment, the present application provides an intelligently adjustable fluidized bed defluorination reactor, comprising a reactor body 23, a fluorine-containing wastewater tank 1, a Ca(OH)2 solution tank 3, an inlet water concentration ratio and a reflux ratio regulator 5, a first inlet water pump 2 and a second inlet water pump 4, wherein the fluorine-containing wastewater tank 1 is connected to the first inlet water pump 2 through a pipeline, and the Ca(OH)2 solution tank 3 is connected to the second inlet water pump 4 through a pipeline, and the first inlet water pump 2 and the second inlet water pump 4 are both connected to the inlet water concentration ratio and the reflux ratio regulator 5, and the inlet water concentration ratio and the reflux ratio regulator 5 is connected to the reactor body 23, and a crystal carrier 8 is arranged in the reactor body 23, and a plurality of groups of lateral water outlets 9 are fixedly connected to one side of the reactor body 23, and a precipitation area 10 is arranged on the top of the reactor body 23, and a crystal outlet 15 is arranged at the bottom of the reactor body 23, and an aeration pipeline 7 is connected to the bottom of the reactor body 23, and an aerator 6 is fixedly connected to the other end of the aeration pipeline 7; A sensor group 20 is arranged inside the reactor body 23, an intelligent controller 21 is arranged outside the reactor body 23, the intelligent controller 21 is electrically connected to the sensor group 20, and an adjustment component and a reflux component are arranged outside the reactor body 23, the adjustment component is used to adjust the pH value, water temperature and precipitation agent dosage of the water body in the reactor body 23, and the reflux component is used to control and adjust the reflux of the fluidized bed effluent; The sensor group 20 is used to collect water information in the reactor body 23. The intelligent controller 21 is provided with a data recording module, a data processing module and an analysis and adjustment module. The data recording module is used to record the water information data collected by the sensor group 20. The data processing module is used to analyze the reaction state of the reactor body 23 and the growth efficiency of the CaF2 crystals in the water body in combination with the real-time water body information data; The analysis and adjustment module is used to combine the analysis results of the data processing module to decide whether the reaction temperature, pH value and water inlet rate of the reactor need to be adjusted, and further analyze whether the precipitant addition content needs to be adjusted; Through the above technical scheme, this embodiment provides an intelligently adjustable fluidized bed defluorination reactor, including a reactor body 23, a fluorine-containing wastewater tank 1, a Ca(OH)2 solution tank 3, an inlet water concentration ratio and a reflux ratio controller 5, a first inlet water pump 2 and a second inlet water pump 4. When defluoridating wastewater, the liquids in the fluorine-containing waste liquid tank and the Ca(OH)2 solution tank 3 obtain the volume ratio of the two solutions through the inlet water concentration ratio and the reflux ratio controller 5, and then flow into the reactor body 23 from the bottom of the reactor body 23 through the first inlet water pump 2 and the second inlet water pump 4 respectively. During the reaction process, since the aeration device is installed at the bottom of the fluidized bed, proper aeration is used to promote the full mixing of the fluorine-containing waste liquid and the Ca(OH)2 solution, thereby promoting the F -+Ca(OH)2→CaF2↓+2OH - The reaction is fully carried out, and the crystal carrier 8 is made of quartz sand. The aeration at the bottom promotes the full mixing of the fluorine-containing waste liquid and the Ca(OH)2 solution, while maintaining the flow state of the fluidized bed and promoting the formation of crystals; And during the reaction process, the sensor group 20 arranged in the reactor body 23 can collect water information in the reactor body 23, and then the water information data collected by the sensor group 20 is recorded by the data recording module in the intelligent controller 21, and the reaction state of the reactor body 23 and the growth efficiency of the CaF2 crystal in the water body are analyzed by the data processing module in combination with the real-time water information data, and finally the analysis and adjustment module is used to combine the analysis results of the data processing module to decide whether the reaction temperature, pH value and water inlet speed of the reactor need to be adjusted, and further analyze whether the precipitant addition content needs to be adjusted; By such arrangement, when defluorination operation is carried out on fluorine-containing wastewater, the water body in the reactor body 23 is collected through the sensor group 20 arranged in the reactor body 23, and the progress and efficiency of the defluorination operation are analyzed by the data processing module in combination with the real-time water body information data. On this premise, through the analysis and adjustment module combined with the analysis results of the data processing module, it is decided whether the reaction temperature, pH value and water inlet speed of the reactor need to be adjusted, and further analysis is performed on whether the precipitant addition content needs to be adjusted, thereby realizing multi-directional monitoring and adjustment, improving the efficiency of the defluorination operation, promoting the recovery of fluoride ions, and reducing the water environment pollution of fluorides.

[0023] See also Figure 1 As shown, the regulating component includes a heat preservation water inlet 18, a heat preservation water outlet 19 and a regulating doser 22 arranged outside the reactor body 23, the regulating doser 22 is connected to the reactor body 23 through a pipeline, the heat preservation water inlet 18 is connected to the peristaltic pump 17 through a pipeline, the peristaltic pump 17 and the heat preservation water outlet 19 are both connected to the constant temperature boiler 16 through a pipeline, and the intelligent controller 21 is electrically connected to the sensor group 20, the regulating doser 22 and the constant temperature boiler 16; The reflux assembly includes an outlet pipe 11 and a secondary sedimentation tank 12, wherein the outlet pipe 11 is fixedly connected to the upper end of the reactor body 23, and the other end of the outlet pipe 11 is fixedly connected to the secondary sedimentation tank 12, a wastewater outlet 13 is provided on one side of the secondary sedimentation tank 12, and the bottom of the secondary sedimentation tank 12 is connected to a reflux pump 14 through a pipeline, and the reflux pump 14 is connected to an inlet concentration ratio and reflux ratio regulator 5 through a pipeline; Through the above technical solution, the present embodiment provides a regulating component and a reflux component, wherein the regulating component includes a heat preservation water inlet 18, a heat preservation water outlet 19 and a regulating dosing device 22 outside the reactor body 23. According to the data monitored by the sensor group 20, the intelligent controller 21 can automatically adjust the heating power of the constant temperature boiler 16 to keep the temperature in the reactor constant, and automatically adjust the dosing amount of the pH regulating dosing device according to the preset pH range. By accurately controlling the dosing amount, it can be ensured that the pH value and temperature in the reactor are always kept within the optimal range, thereby optimizing the crystallization process; The reflux component includes an outlet pipe 11 and a secondary sedimentation tank 12. The effluent from the fluidized bed passes through a triangular overflow weir and is precipitated in a sedimentation area 10 through crystallization and a crystal carrier 8, so that the crystals are not lost. Then the effluent from the fluidized bed passes through the secondary sedimentation tank 12. The secondary sedimentation tank 12 is divided into two parts by a baffle, one part is for secondary precipitation, and the other part is discharged after precipitation, ensuring that CaF2 crystals do not flow out. The effluent from the secondary sedimentation tank 12 flows back through an intelligent control device to obtain a reflux ratio. According to the fluorine concentration in the effluent water quality, the flow rate of the water inlet pump and the reflux pump 14 is adjusted to ensure stable operation of the reactor.

[0024] The analysis process of the data processing module includes: Calculate the reaction state influence coefficient of the reactor body (23) at the i-th time point ; Among them, i is a data collection at a fixed time interval after the reaction starts, is the water temperature in the reactor body (23) at the i-th time point, is the preset temperature, for The standard value of is the pH value in the reactor body (23) at the i-th time point, To preset pH value, for The standard value of is the water inflow rate in the reactor body (23) at the i-th time point, is the preset water inlet speed, for The standard value of is the correction coefficient, which is set according to empirical fitting; Through the above technical solution, this embodiment provides the reaction state influence coefficient of the reactor body 23 at the i-th time point: , can be obtained by formula It is obvious that when the water temperature, pH value and water inlet speed in the reactor body 23 at the i-th time point differ from the preset value, the reaction state influence coefficient of the reactor body 23 at the i-th time point is The larger the value is, the greater the reaction state of the wastewater in the current reactor body 23 is affected, and the water temperature, pH value and water inlet speed need to be adjusted in time. On the contrary, when the water temperature, pH value and water inlet speed in the reactor body 23 at the i-th time point are smaller than the preset values, the reaction state influence coefficient of the reactor body 23 at the i-th time point is The smaller it is, the less the reaction state of the wastewater in the current reactor body 23 is affected, and there is no need to adjust the water temperature, pH value and water inlet speed; Through this calculation method, the influence on the reaction state of the water in the reactor body 23 at the current time point can be analyzed according to the calculation results, so as to timely adjust the water temperature, pH value and water inlet speed to ensure a good reaction state.

[0025] The analysis process of the data processing module also includes: By calculating the reaction state influence coefficient of the reactor body 23 at the i-th time point The threshold value of the coefficient of influence of the preset reaction state Make a comparison; like The data recording module determines that there is a problem with the reaction state of the reactor body (23) at this time point, and it is necessary to correct the water temperature, pH value and water inlet speed in the reactor body (23); like , the system data recording module determines that there is no problem with the reaction state of the reactor body (23) at this time point, and there is no need to correct the water temperature, pH value and water inlet speed in the reactor body (23); Through the above technical solution, this embodiment uses the reaction state influence coefficient of the reactor body 23 at the i-th time point The threshold value of the coefficient of influence of the preset reaction state By comparing, it is possible to determine whether there is a problem with the reaction state of the reactor body 23 at that time point, and to promptly correct the water temperature, pH value and water inlet rate in the reactor body 23 according to the judgment result. By setting it in this way, after the parameters are corrected, it can be preliminarily guaranteed that the efficiency of the defluorination operation will not be reduced, and accurate data can be provided for subsequent judgment on whether the dosage of the precipitant needs to be adjusted, thereby further improving the work efficiency of the defluorination operation.

[0026] See also Figure 2 As shown, the adjustment process of the analysis and adjustment module includes: When it is determined that there is a problem with the reaction state of the reactor body 23 at this time point, the intelligent controller 21 automatically adjusts the heating power of the constant temperature boiler 16 according to the data monitored in real time by the sensor group 20, and automatically adjusts the pH value of the water body in the reactor body 23 according to the preset pH range, and finally adjusts the flow rate of the water inlet pump and the reflux pump 14 according to the fluorine concentration in the effluent water quality, so that the reactor runs stably; Through the above technical scheme, the intelligent controller 21 combined with the data monitored in real time by the sensor group 20 can automatically adjust the heating power of the constant temperature boiler 16 to ensure the water temperature in the reactor body 23, and then automatically adjust the pH value of the water in the reactor body 23 according to the preset pH range, and adjust the flow rate of the water inlet pump and the reflux pump 14 according to the fluorine concentration in the effluent water quality, so that the reactor runs stably, thereby preliminarily ensuring that the efficiency of the defluorination operation will not be reduced.

[0027] The processing process of the data processing module includes: First, the sensor group 20 is used to monitor the fluoride crystal content in the water body of the reactor body 23 in real time, and a real-time change curve of the fluoride crystal content in the water body is established through the real-time monitoring data. ; By formula Calculate the fluoride recovery influence coefficient at the i-th time point ; in, is the fluorine content of the wastewater discharged from the reactor body (23) at the i-th time point after treatment, is the preset fluoride content of the wastewater after treatment. for The standard value of To define a function, if , then let , otherwise, let , is the calcium salt compound content in the water body of the reactor body (23) at the i-th time point, is the preset calcium salt compound content at the i-th time point, is the fluoride crystal content in the water body of the reactor body (23) at time point i, is the preset fluoride crystal content at the i-th time point, is the error influence coefficient, which is set according to empirical fitting. is the proportionality coefficient, which is set according to empirical fitting. is the time point when the reaction starts, is the time point of the i-th data collection; Through the above technical solution, this embodiment provides the fluoride recovery influence coefficient at the i-th time point: , can be obtained by formula It is obvious that when the fluoride content of the treated wastewater discharged from the reactor body 23 at the i-th time point is higher than the preset value, and the higher the calcium salt compound content in the water body of the reactor body 23 at the i-th time point, the lower the fluoride crystal content, and the lower the change in the fluoride crystal content, then the fluoride recovery influence coefficient at the i-th time point is The higher the value, the slower the current extraction speed of fluoride is, which means that the efficiency of wastewater defluorination is reduced. On the contrary, when the fluorine content of the treated wastewater discharged from the reactor body 23 at the i-th time point is lower than the preset value, and the lower the calcium salt compound content in the water body of the reactor body 23 at the i-th time point, the higher the fluoride crystal content, and the higher the change in the fluoride crystal content, then the fluoride recovery influence coefficient at the i-th time point is The lower it is, the faster the current extraction rate of fluoride is, which means that the efficiency of wastewater defluoridation is improved; Through this calculation method, the fluoride recovery influence coefficient at the i-th time point can be calculated by combining the water body information data in the reactor body 23. The data can reflect the extraction rate of fluoride and the efficiency of wastewater defluorination at that time point, and because the data is combined with the reaction state influence coefficient of the reactor body 23 at the i-th time point Correction can be made, so the accuracy of the data can be improved, thereby providing accurate data support for subsequent judgment on whether the amount of precipitant input needs to be adjusted, thereby ensuring the accuracy of the judgment result.

[0028] The processing process of the data processing module also includes: By calculating the fluoride recovery influence coefficient at the i-th time point The fluoride recovery factor threshold is set Make a comparison; like The data processing module determines that the fluoride recovery efficiency at this time point is low, the growth efficiency of CaF2 crystals in the water body is reduced, and the input amount of the precipitant needs to be adjusted; like , the data processing module determines that the fluoride recovery efficiency at this time point is high, the growth efficiency of CaF2 crystals in the water body is improved, and there is no need to adjust the input amount of the precipitant; Through the above technical solution, this embodiment is to convert the fluoride recovery influence coefficient at the i-th time point into The fluoride recovery factor threshold is set By comparing the results, an accurate judgment can be made on the fluoride recovery efficiency at that point in time. The judgment result can indirectly reflect the defluorination efficiency of fluoride-containing wastewater at the current point in time, thereby making an accurate judgment on whether the current amount of precipitant input is needed, ensuring that the current defluorination operation has good water temperature, pH, and water inlet flow, as well as a suitable amount of precipitant input, thereby improving the efficiency of the defluorination operation.

[0029] The process of the analysis and adjustment module also includes: By formula Calculate the adjusted precipitant input at the i-th time point ; in, is the preset amount of precipitant input at the i-th time point, To adjust the coefficient comparison table function, according to The influence of the range of values ​​on the input amount of precipitant is obtained based on the test; Through the above technical solution, this embodiment provides the input amount of the precipitant adjusted at the i-th time point. , can be obtained by formula Calculated, this embodiment combines the preset precipitant input amount at the i-th time point and the fluoride recovery influence coefficient at the i-th time point and the reaction state influence coefficient of the reactor body 23 at the i-th time point The amount of precipitant added after adjustment at the i-th time point can be corrected. Calculations are performed to ensure that when the extraction rate of fluoride and the efficiency of wastewater defluoridation are low at that point in time, the amount of precipitant added is adjusted in time to increase the extraction rate of fluoride and the efficiency of wastewater defluoridation.

[0030] The above is a detailed description of an embodiment of the present invention, but the content is only a preferred embodiment of the present invention and cannot be considered to limit the scope of implementation of the present invention. All equivalent changes and improvements made within the scope of the present invention should still fall within the scope of the patent coverage of the present invention.

Claims

1. An intelligently adjustable fluidized bed defluorination reactor, characterized in that: The invention comprises a reactor body (23), a fluorine-containing wastewater tank (1), a Ca(OH)2 solution tank (3), an inlet water concentration ratio and a reflux ratio controller (5), a first inlet water pump (2) and a second inlet water pump (4), wherein the fluorine-containing wastewater tank (1) is connected to the first inlet water pump (2) via a pipeline, the Ca(OH)2 solution tank (3) is connected to the second inlet water pump (4) via a pipeline, the first inlet water pump (2) and the second inlet water pump (4) are both connected to the inlet water concentration ratio and a reflux ratio controller (5), and the inlet water concentration ratio and The reflux ratio controller (5) is connected to the reactor body (23), a crystal carrier (8) is arranged in the reactor body (23), a plurality of groups of lateral water outlets (9) are fixedly connected to one side of the reactor body (23), a precipitation area (10) is arranged at the top of the reactor body (23), a crystal outlet (15) is arranged at the bottom of the reactor body (23), an aeration pipeline (7) is connected to the bottom of the reactor body (23), and an aerator (6) is fixedly connected to the other end of the aeration pipeline (7); A sensor group (20) is arranged inside the reactor body (23); an intelligent controller (21) is arranged outside the reactor body (23); the intelligent controller (21) is electrically connected to the sensor group (20); an adjustment component and a reflux component are arranged outside the reactor body (23); the adjustment component is used to adjust the pH value, water temperature and precipitation agent dosage of the water body in the reactor body (23); and the reflux component is used to control and adjust the reflux of the effluent water of the fluidized bed; The sensor group (20) is used to collect water body information in the reactor body (23); the intelligent controller (21) is provided with a data recording module, a data processing module and an analysis and adjustment module; the data recording module is used to record the water body information data collected by the sensor group (20); The data processing module is used to analyze the reaction state of the reactor body (23) and the growth efficiency of CaF2 crystals in the water body in combination with real-time water body information data; The analysis and adjustment module is used to combine the analysis results of the data processing module to decide whether the reaction temperature, pH value and water inlet rate of the reactor need to be adjusted, and further analyze whether the precipitant addition content needs to be adjusted.

2. The intelligent adjustable fluidized bed defluorination reactor according to claim 1, characterized in that: The regulating component comprises a heat preservation water inlet (18), a heat preservation water outlet (19) and a regulating doser (22) arranged outside the reactor body (23); the regulating doser (22) is connected to the reactor body (23) via a pipeline; the heat preservation water inlet (18) is connected to a peristaltic pump (17) via a pipeline; the peristaltic pump (17) and the heat preservation water outlet (19) are both connected to a constant temperature boiler (16) via a pipeline; and the intelligent controller (21) is electrically connected to the sensor group (20), the regulating doser (22) and the constant temperature boiler (16); The reflux assembly comprises an outlet pipe (11) and a secondary sedimentation tank (12), wherein the outlet pipe (11) is fixedly connected to the upper end of the reactor body (23), and the other end of the outlet pipe (11) is fixedly connected to the secondary sedimentation tank (12). A wastewater outlet (13) is provided on one side of the secondary sedimentation tank (12), and the bottom of the secondary sedimentation tank (12) is connected to a reflux pump (14) via a pipeline, and the reflux pump (14) is connected to an inlet concentration ratio and reflux ratio controller (5) via a pipeline.

3. The intelligent adjustable fluidized bed defluorination reactor according to claim 1, characterized in that: The analysis process of the data processing module includes: By formula Calculate the reaction state influence coefficient of the reactor body (23) at the i-th time point ; Where i is a data collection at a fixed time interval after the reaction starts. is the water temperature in the reactor body (23) at the i-th time point, is the preset temperature, for The standard value of is the pH value in the reactor body (23) at the i-th time point, To preset pH value, for The standard value of is the water inflow rate in the reactor body (23) at the i-th time point, is the preset water inlet speed, for The standard value of is the correction coefficient, which is set according to empirical fitting.

4. The intelligent adjustable fluidized bed defluorination reactor according to claim 3, characterized in that: The analysis process of the data processing module also includes: By calculating the reaction state influence coefficient of the reactor body (23) at the i-th time point The threshold value of the coefficient of influence of the preset reaction state Make a comparison; like The data recording module determines that there is a problem with the reaction state of the reactor body (23) at this time point, and it is necessary to correct the water temperature, pH value and water inlet speed in the reactor body (23); like The system data recording module determines that there is no problem with the reaction state of the reactor body (23) at this time point, and there is no need to correct the water temperature, pH value and water inlet speed in the reactor body (23).

5. The intelligent adjustable fluidized bed defluorination reactor according to claim 4, characterized in that: The adjustment process of the analysis and adjustment module includes: When it is determined that there is a problem with the reaction state of the reactor body (23) at this time point, the intelligent controller (21) automatically adjusts the heating power of the constant temperature boiler (16) according to the data monitored in real time by the sensor group (20), and automatically adjusts the pH value of the water body in the reactor body (23) according to a preset pH range. Finally, according to the fluorine concentration in the effluent water quality, the flow rate of the water inlet pump and the reflux pump (14) is adjusted to ensure stable operation of the reactor.

6. The intelligent adjustable fluidized bed defluorination reactor according to claim 4, characterized in that: The processing process of the data processing module includes: First, the fluoride crystal content in the water body of the reactor body (23) is monitored in real time by the sensor group (20), and a real-time change curve of the fluoride crystal content in the water body is established based on the real-time monitoring data. ; By formula Calculate the fluoride recovery influence coefficient at the i-th time point ; in, is the fluorine content of the wastewater discharged from the reactor body (23) at the i-th time point after treatment, is the preset fluoride content of the wastewater after treatment. for The standard value of To define a function, if , then let , otherwise, let , is the calcium salt compound content in the water body of the reactor body (23) at the i-th time point, is the preset calcium salt compound content at the i-th time point, is the fluoride crystal content in the water body of the reactor body (23) at time point i, is the preset fluoride crystal content at the i-th time point, is the error influence coefficient, which is set according to empirical fitting. is the proportionality coefficient, which is set according to empirical fitting. is the time point when the reaction starts, is the time point of the i-th data collection.

7. The intelligent adjustable fluidized bed defluorination reactor according to claim 6, characterized in that: The processing process of the data processing module also includes: By calculating the fluoride recovery influence coefficient at the i-th time point The fluoride recovery factor threshold is set Make a comparison; like The data processing module determines that the fluoride recovery efficiency at this time point is low, the growth efficiency of CaF2 crystals in the water body is reduced, and the input amount of the precipitant needs to be adjusted; like The data processing module determines that the fluoride recovery efficiency at this time point is high, the growth efficiency of CaF2 crystals in the water body is improved, and there is no need to adjust the amount of precipitant input.

8. The intelligent adjustable fluidized bed defluorination reactor according to claim 7, characterized in that: The process of the analysis and adjustment module also includes: By formula Calculate the adjusted precipitant input at the i-th time point ; in, is the preset amount of precipitant input at the i-th time point, To adjust the coefficient comparison table function, according to The influence of the numerical range on the input amount of precipitant is obtained based on testing.

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