Ammonium fluoride wastewater treatment device

Abstract

The present application relates to an ammonium fluoride wastewater treatment device, and relates to the field of wastewater treatment technology. The ammonium fluoride wastewater treatment device includes a pH blending tank, a heater, a stripping tower, a nitrifying tower, and a pickling tower. The heater is used to heat the ammonium fluoride wastewater discharged from the pH blending tank. The device also includes a preheating mechanism, the preheating mechanism including a preheating box and a preheating pipe. The pH blending tank is connected to the top of the preheating box through a pipeline, the bottom of the preheating box is connected to the top of the heater, the bottom of the heater is connected to the top of the stripping tower, one end of the preheating pipe is connected to the water outlet of the stripping tower, and the other end extends and passes through the preheating box and is connected to a fluoride reactor. The present application has the effect of reducing energy consumption when heating ammonium fluoride wastewater.

Description

Technical Field

[0001] The present application relates to the technical field of wastewater treatment, and in particular to an ammonium fluoride wastewater treatment device. Background Art

[0002] With the continuous development of social economy and the increasing level of science and technology, my country's electronic information industry is also booming. In the production of electronic products such as electronic chips and semiconductors, a large amount of ammonium fluoride wastewater is often generated. As a wastewater treatment device, ammonium fluoride wastewater treatment equipment can treat ammonium fluoride wastewater and therefore plays an important role.

[0003] The prior art discloses an ammonium fluoride wastewater treatment device comprising a pH regulating tank, a heater, a stripping tower, a nitrifying tower, and an acid washing tower. The pH regulating tank is connected to a feed pipe and a feed pipe. The feed pipe is used to introduce ammonium fluoride wastewater, and the feed pipe is used to introduce a pH-adjusting agent. The bottom end of the pH regulating tank is connected to the heater via a pipeline, which is used to heat the introduced ammonium fluoride wastewater. The bottom end of the heater is connected to the top of the stripping tower via a pipeline. The stripping tower is used to remove free ammonia in the ammonium fluoride wastewater and react to form ammonia gas. The bottom of the stripping tower is also connected to an outlet pipe, which is used to pass the warm wastewater discharged from the stripping tower into a fluoride reactor. The top of the stripping tower is connected to the bottom of the nitrifying tower via a pipeline. The nitrifying tower is used to biologically nitrify the introduced mixed gas containing ammonia. The top of the nitrification tower is also connected to the bottom of the pickling tower through a pipeline, so that the remaining air and a small part of the incompletely reacted ammonia gas enter the pickling tower from the top after being separated by the nitrification tower steam and water. The pickling tower is used to allow the remaining ammonia gas to be absorbed by the acid solution. The top of the pickling tower is connected to the outside world so that the air that meets the emission standards can be passed into the atmosphere. During use, the ammonium fluoride wastewater is passed into the pH regulating tank. After adjusting the pH value, the ammonium fluoride wastewater enters the heater and is heated. After heating is completed, it is passed into the stripping tower. The stripping tower takes away the free ammonia in the ammonium fluoride wastewater and forms ammonia gas after the ammonium fluoride wastewater reacts. The nitrification tower then carries out biological nitrification on the mixed gas containing ammonia gas, and then a small part of the incompletely reacted ammonia gas is absorbed by the acid solution in the pickling tower, so that the air that meets the emission standards can be passed into the atmosphere.

[0004] Regarding the above-mentioned related technologies, since the ammonium fluoride wastewater after adjustment in the pH adjustment tank needs to be continuously heated to a specified temperature by a heater before it can be passed into the stripping tower, and the warm wastewater discharged from the bottom of the stripping tower is directly connected to the fluoride reactor, this makes the warm wastewater discharged from the stripping tower not fully utilized, thereby increasing the energy consumption when heating the ammonium fluoride wastewater, thereby increasing energy consumption, and therefore needs to be improved. Summary of the Invention

[0005] In order to reduce energy consumption when heating ammonium fluoride wastewater, the present application provides an ammonium fluoride wastewater treatment device.

[0006] The present application provides an ammonium fluoride wastewater treatment device, which adopts the following technical solution:

[0007] An ammonium fluoride wastewater treatment device comprises a pH blending tank, a heater, a stripping tower, a nitrifying tower and a pickling tower, wherein the heater is used to heat the ammonium fluoride wastewater discharged from the pH blending tank, and further comprises a preheating mechanism, wherein the preheating mechanism comprises a preheating box and a preheating pipe, wherein the pH blending tank is connected to the top of the preheating box through a pipeline, the bottom of the preheating box is connected to the top of the heater, and the bottom of the heater is connected to the top of the stripping tower, one end of the preheating pipe is connected to the water outlet of the stripping tower, and the other end extends and passes through the preheating box and is connected to a fluoride reactor.

[0008] By adopting the above technical solution, compared with the prior art, the ammonium fluoride wastewater adjusted by the pH adjustment tank is directly heated to a specified temperature by the heater, thereby increasing the energy consumption when heating the ammonium fluoride wastewater; the present application sets a preheating mechanism, so that the warm waste liquid discharged from the bottom of the stripping tower can enter the preheating box through the preheating pipe, and perform heat exchange with the ammonium fluoride wastewater in the preheating box through the side wall of the pipe, thereby preheating the ammonium fluoride wastewater, realizing the reuse of the warm wastewater discharged from the stripping tower, effectively increasing the temperature of the ammonium fluoride wastewater entering the heater, thereby reducing the energy required for the heater to heat the ammonium fluoride wastewater to the specified temperature, and further reducing the energy consumption when heating the ammonium fluoride wastewater, thereby reducing energy consumption.

[0009] Preferably, a filter box is provided on the side of the pH adjusting tank away from the preheating tank. One side of the filter box is connected to a feed pipe, which is used to connect to the ammonium fluoride wastewater source. The other side of the filter box is connected to the pH adjusting tank, and a plurality of filter screens are also provided in the filter box.

[0010] By adopting the above technical solution and setting up the filter box, the incoming ammonium fluoride wastewater can be filtered by the filter mesh in the filter box, thereby reducing the fixed impurities in the ammonium fluoride wastewater and effectively reducing the probability of subsequent pipelines being blocked by impurities in the wastewater, thereby ensuring the smooth treatment of the ammonium fluoride wastewater and the use effect of the present application.

[0011] Preferably, a plurality of mounting frames are provided in the filter box, and the mounting frames are arranged in one-to-one correspondence with the filter screens. Each of the filter screens is slidably connected to the corresponding mounting frame, and the sliding track extends to the outside of the corresponding mounting frame. A plurality of mounting grooves are also provided on the side wall of the filter box, and the mounting grooves are arranged in one-to-one correspondence with the mounting frames, and each of the filter screens slides into the mounting frame through the corresponding mounting groove.

[0012] By adopting the above technical solution and setting up the installation frame, when relevant personnel need to clean or replace the filter, they can pull one end of the filter to make the filter slide out of the installation slot and out of the installation frame, so as to realize the removal of the filter, which effectively facilitates the removal and replacement of the filter by relevant personnel, thereby reducing the chance of the filter being blocked after a long period of time due to the filter being too difficult to replace.

[0013] Preferably, a closing assembly is further provided on the filter box, and the closing assembly includes a plurality of closing frames, one end of each of the closing frames is rotatable with the filter box, and the other end is detachably connected to the filter box, and each of the closing frames is embedded in the corresponding mounting groove and is used to seal the mounting groove.

[0014] By adopting the above technical solution, the setting of the closing component enables relevant personnel to drive the closing frame to rotate, so that the closing frame is embedded in the corresponding installation groove. After the embedding is completed, the closing frame is connected to the filter box to achieve the closure of the installation groove, thereby facilitating the closing of the installation groove by relevant personnel, and also facilitating the opening of the closing frame by relevant personnel, thereby facilitating the disassembly of the filter net.

[0015] Preferably, each of the mounting frames is slidably connected to the filter box, and the sliding direction is the same as the sliding direction of the corresponding filter screen. The sliding path of each mounting frame extends out of the corresponding mounting groove. The closing assembly also includes a plurality of linkage parts, which correspond to the closing frame. The closing frame drives one end of the corresponding mounting frame to slide out of the corresponding mounting groove through the corresponding linkage parts.

[0016] By adopting the above technical solution and setting up the linkage frame, when the relevant personnel drives the closed frame to rotate, the closed frame can drive the installation frame to slide through the linkage member during the rotation process, so that one end of the installation frame slides out of the installation groove, thereby facilitating the relevant personnel to remove the filter screen on the installation frame, realizing the linkage between the installation frame and the closed frame, and facilitating the operation of the relevant personnel.

[0017] Preferably, each linkage member includes a linkage frame, one end of each linkage frame is rotatably connected to the corresponding closing frame, and the other end of each linkage frame is rotatably connected to the corresponding installation frame.

[0018] By adopting the above technical solution, the linkage frame is set up so that when the closed frame rotates, the closed frame can drive one end of the linkage frame to move together, thereby causing the other end of the linkage frame to adaptively move, and then drive the corresponding installation frame to slide, so that one end of the installation frame gradually slides out of the installation groove, realizing the linkage between the installation frame and the closed frame, facilitating the operation of relevant personnel, and also facilitating the relevant personnel to remove the filter screen on the installation frame.

[0019] Preferably, a locking assembly is provided on each of the mounting frames, and each of the locking assemblies includes a locking frame and an elastic member. Each of the locking frames is slidably connected to the corresponding mounting frame, and one end is inserted into the corresponding filter screen. Each of the elastic members is used to allow the corresponding locking frame to continue to be inserted into the corresponding filter screen through its own elastic force.

[0020] By adopting the above technical solution, the locking assembly is set up so that when the filter screen slides into the installation frame, the locking frame can drive the locking frame to slide in the direction close to the filter screen under the elastic force of the elastic member, so that one end of the locking frame is inserted into the corresponding filter screen to lock the filter screen, thereby achieving fixation between the filter screen and the installation frame, and reducing the chance of accidental slippage of the filter screen relative to the installation frame.

[0021] Preferably, each of the mounting frames is provided with a locking frame, each of the locking frames is located on one side of the corresponding mounting frame along the width direction, and is slidably connected to the mounting frame, and the sliding direction is the height direction of the corresponding mounting frame, each of the locking frames is slidably connected to the corresponding locking frame, and a guide surface is provided on the inner wall of each mounting groove for the corresponding locking frame to abut against, and each of the locking frames is also provided with a pop-up member, which is used to use its own elastic force to allow the corresponding locking frame to move away from the corresponding filter net.

[0022] By adopting the above technical solution, the locking frame is set so that the installation frame slides outward under the drive of the linkage frame, and when one end of the locking frame gradually slides out of the installation groove, the locking frame can gradually slide in the direction away from the filter under the action of the elastic force of the pop-up member, so that the locking frame drives the locking frame on itself to gradually move away from the filter, thereby realizing automatic unlocking of the filter, which effectively facilitates the relevant personnel to disassemble the filter.

[0023] Preferably, the preheating box is further provided with a temperature control mechanism, which includes a temperature control tube and a temperature control valve. One end of the temperature control tube is connected to the end of the preheating tube away from the fluoride reactor, and the other end is connected to the fluoride reactor. The temperature control valve is provided on the preheating tube and is used to control the opening and closing of the preheating tube.

[0024] By adopting the above technical solution and arranging the temperature control mechanism, when the temperature of the waste liquid in the preheating tube is lower than the temperature of the ammonium fluoride wastewater in the preheating box, the temperature control valve can close the preheating tube, so that the warm waste liquid discharged from the stripping tower can directly enter the fluoride reactor, thereby reducing the probability of reverse heat transfer of the ammonium fluoride wastewater when the temperature of the warm waste liquid discharged from the bottom of the stripping tower is lower than the temperature of the ammonium fluoride wastewater in the preheating box, thereby effectively ensuring the preheating effect of the ammonium fluoride wastewater.

[0025] Preferably, the temperature control mechanism also includes a detection component, which includes a detection part and a control part. The detection part and the temperature control valve are both controlled by the control part. The detection part is used to detect the temperature of the liquid in the preheating tube near one end of the stripping tower, and the control part is used to control the opening and closing of the temperature control valve based on the temperature value detected by the detection part.

[0026] By adopting the above technical solution, the detection component is set up so that the detection component can detect the temperature of the liquid in the preheating tube close to the stripping tower. When the temperature of the liquid in this end of the preheating tube is lower than the temperature of the ammonium fluoride wastewater in the preheating box, the control component can control the temperature control valve to close the preheating tube, thereby realizing automatic control of the opening and closing of the preheating tube, which effectively facilitates the operation of relevant personnel.

[0027] In summary, this application includes at least one of the following beneficial technical effects:

[0028] 1. The setting of the preheating mechanism enables the warm waste liquid discharged from the bottom of the stripping tower to enter the preheating box through the preheating pipe, and perform heat exchange with the ammonium fluoride waste water in the preheating box through the side wall of the pipe, thereby preheating the ammonium fluoride waste water, realizing the reuse of the warm waste water discharged from the stripping tower, effectively increasing the temperature of the ammonium fluoride waste water entering the heater, thereby reducing the energy required by the heater to heat the ammonium fluoride waste water to a specified temperature, thereby reducing the energy consumption when heating the ammonium fluoride waste water, thereby reducing energy consumption;

[0029] 2. The setting of the filter box allows the incoming ammonium fluoride wastewater to be filtered by the filter screen in the filter box, thereby reducing the fixed impurities in the ammonium fluoride wastewater and effectively reducing the probability of subsequent pipelines being blocked by impurities in the wastewater, thereby ensuring the smooth treatment of the ammonium fluoride wastewater and the use effect of the present application;

[0030] 3. The temperature control mechanism is set so that when the temperature of the waste liquid in the preheating tube is lower than the temperature of the ammonium fluoride wastewater in the preheating box, the temperature control valve can close the preheating tube, so that the warm waste liquid discharged from the stripping tower can directly enter the fluoride reactor, thereby reducing the probability of reverse heat transfer of the ammonium fluoride wastewater when the temperature of the warm waste liquid discharged from the bottom of the stripping tower is lower than the temperature of the ammonium fluoride wastewater in the preheating box, thereby effectively ensuring the preheating effect of the ammonium fluoride wastewater. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 It is a schematic diagram used to illustrate the overall ammonium fluoride wastewater treatment device in the embodiment of the present application.

[0032] Figure 2 It is a structural diagram used to reflect the filter box in the embodiment of the present application.

[0033] Figure 3 It is a structural diagram used to embody the embodiments of the present application.

[0034] Figure 4 yes Figure 3 Enlarged view of part A in the middle.

[0035] Figure 5 It is a structural diagram used to reflect the locking assembly in an embodiment of the present application.

[0036] Figure 6 It is a structural diagram used to reflect the detection component in the embodiment of the present application.

[0037] Figure 7 It is a structural diagram used to reflect the preheating tube in the embodiment of the present application.

[0038] Explanation of the accompanying symbols: 1. pH blending tank; 2. Heater; 3. Stripping tower; 4. Nitrification tower; 5. Pickling tower; 6. Preheating mechanism; 61. Preheating box; 62. Preheating tube; 63. Fluoride reactor; 7. Filter box; 71. Feed pipe; 72. Closing assembly; 721. Closing frame; 722. Linkage member; 7221. Linkage frame; 73. Installation frame; 74. Locking frame; 75. Pop-up member; 76. Locking assembly; 761. Locking frame; 762. Elastic member; 77. Filter screen; 771. Locking groove; 8. Installation groove; 9. Temperature control mechanism; 91. Temperature control tube; 92. Temperature control valve; 93. Detection assembly; 931. Detection member; 932. Control member. DETAILED DESCRIPTION

[0039] The following is combined with Figure 1-7 This application is described in further detail.

[0040] The present application discloses an ammonium fluoride wastewater treatment device. Figure 1The ammonium fluoride wastewater treatment device includes a pH blending tank 1, a heater 2, a stripping tower 3, a nitrification tower 4, a pickling tower 5, and a preheating mechanism 6. The heater 2 is used to heat the ammonium fluoride wastewater discharged from the pH blending tank 1. The preheating mechanism 6 includes a preheating box 61 and a preheating pipe 62. The pH blending tank 1 is connected to the top of the preheating box 61 through a pipeline. The bottom of the preheating box 61 is connected to the top of the heater 2. The bottom of the heater 2 is connected to the top of the stripping tower 3. One end of the preheating pipe 62 is connected to the water outlet of the stripping tower 3, and the other end extends and passes through the preheating box 61 and is connected to the fluoride reactor 63.

[0041] Reference Figure 1 and Figure 2 A filter box 7 is further provided on the side of the pH regulating tank away from the heater 2. A feed pipe 71 is provided on the filter box 7. One end of the feed pipe 71 is connected to the ammonium fluoride wastewater source, and the other end is connected to the top of the chamber of the filter box 7. A plurality of mounting grooves 8 are further provided on the side wall of the filter box 7. In the embodiment of the present application, the number of mounting grooves 8 is set to three and is evenly spaced along the length of the filter box 7. Each mounting groove 8 is connected to the chamber of the filter box 7, and the top and bottom walls of each mounting groove 8 at the end connected to the outside are both provided with arc-shaped guide surfaces.

[0042] Reference Figure 2 、 Figure 3 and Figure 4 The filter box 7 is also provided with a sealing assembly 72, which includes a plurality of sealing frames 721. In the present embodiment, there are three sealing frames 721, each corresponding to one of the mounting slots 8. Each sealing frame 721 is pivotally connected to the filter box 7 at one end along the width of the filter box 7. The side of each sealing frame 721 closest to the filter box 7 is embedded in the mounting slot 8, sealing the corresponding mounting slot 8, and the side of each sealing frame 721 is adapted to fit the inner wall of the mounting slot 8.

[0043] Reference Figure 2 and Figure 4 In this embodiment, a sealing gasket is also provided on the enclosing frame 721 to enhance the sealing effect of the mounting groove 8. Each enclosing frame 721, distal from its own rotational connection end, is detachably connected to the filter box 7 via a plurality of bolts. In other embodiments, each enclosing frame 721 may also be provided with a dedicated locking structure to facilitate the fixing between the enclosing frame 721 and the filter box 7.

[0044] Reference Figure 3 and Figure 4Each mounting slot 8 is provided with a mounting frame 73. Each mounting frame 73 is slidably connected to the inner wall of the mounting slot 8 via a slide rail, and the sliding direction is the opening direction of the corresponding mounting slot 8. The sliding path extends to the outside of the corresponding mounting slot 8, so that one end of the mounting frame 73 can slide out of the mounting slot 8. The closing assembly 72 also includes a plurality of linkage members 722. In the embodiment of the present application, each closing frame 721 is provided with two linkage members 722, and they are respectively located at the upper and lower ends of the corresponding closing frame 721.

[0045] Reference Figure 3 and Figure 4 Each linkage member 722 includes a linkage frame 7221, one end of each linkage frame 7221 is rotatably connected to the end of the corresponding mounting frame 73 through a pin shaft, and the other end of each linkage frame 7221 is rotatably connected to the corresponding closed frame 721 through a pin shaft, so that the closed frame 721 can drive the corresponding mounting frame 73 to slide through the linkage frame 7221, thereby causing one end of the mounting frame 73 to slide out of the mounting groove 8.

[0046] Reference Figure 3 and Figure 4 In the initial state, that is, one side of the closing frame 721 is embedded in the corresponding mounting groove 8, and when the mounting groove 8 is sealed, the mounting frame 73 is completely located in the filter box 7, and one end thereof abuts against the inner wall of the mounting groove 8. When the closing frame 721 rotates and gradually opens, the closing frame 721 drives the linkage frame 7221 to move, thereby causing the linkage frame 7221 to move away from the corresponding end of the closing frame 721, driving the corresponding mounting frame 73 to slide, causing one end of the mounting frame 73 to slide out of the corresponding mounting groove 8.

[0047] Reference Figure 4 and Figure 5 Each mounting frame 73 is provided with a locking frame 74 on one end adjacent to the corresponding closure frame 721. Two locking frames 74 are provided on each mounting frame 73, one located on the upper and lower sides of the mounting frame 73. Each locking frame 74 is sleeved onto the corresponding side of the mounting frame 73 and is slidably connected to the corresponding mounting frame 73, with the sliding direction being the height direction of the mounting frame 73. When the mounting frame 73 is fully positioned within the filter box 7, each locking frame 74 abuts against the inner wall of the guide surface at the top or bottom end of the corresponding mounting slot 8.

[0048] Reference Figure 4 and Figure 5Each locking frame 74 is provided with an ejection member 75. In the embodiment of the present application, each ejection member 75 is configured as a pressure spring, and each pressure spring is sleeved on the corresponding mounting frame 73. The top end of each pressure spring abuts against the corresponding locking frame 74, and the bottom end of each pressure spring abuts against the protrusion on the corresponding mounting frame 73. Therefore, when the mounting frame 73 gradually slides out of the mounting slot 8, the pressure spring can drive the corresponding locking frame 74 away from the mounting frame 73 through its own elastic force.

[0049] Reference Figure 4 and Figure 5 Each locking frame 74 is provided with a locking assembly 76, each locking assembly 76 comprising a locking frame 761 and an elastic member 762. Each locking frame 761 is slidably connected to the corresponding locking frame 74, and the sliding direction is the same as the sliding direction of the corresponding locking frame 74. Each locking frame 761 has a guide surface on the end closest to the corresponding mounting frame 73, and the guide surface on each locking frame 761 is located on the side of the locking frame 761 closest to the closing frame 721.

[0050] Reference Figure 4 and Figure 5 In the embodiment of the present application, each elastic member 762 is configured as a pressure spring, each of the pressure springs is mounted on the corresponding locking frame 761, and one end is against the inner wall of the corresponding locking frame 74, and the other end is against the end of the corresponding locking frame 761 close to the locking frame 74.

[0051] Reference Figure 3 、 Figure 4 and Figure 5 Each mounting frame 73 is further provided with a filter screen 77. Each mounting frame 73 is sleeved onto the corresponding filter screen 77 and is slidably connected to the corresponding filter screen 77 so that the filter screen 77 can slide out of the opening of the corresponding mounting frame 73. Locking grooves 771 are provided on the upper and lower sides of the end of each filter screen 77 near the closing frame 721, into which the corresponding locking frame 761 is inserted to lock the filter screen 77.

[0052] Reference Figure 3 、 Figure 4 and Figure 5In the initial state, that is, when the installation frame 73 is completely located within the filter box 7, the locking frames 761 are inserted into the corresponding locking grooves 771 on the filter screen 77, locking the filter screen 77. When the closing frame 721 drives one end of the installation frame 73 to gradually slide out of the installation groove 8 through the linkage frame 7221, the locking frame 74, under the elastic force of the ejection member 75, abuts against the inner wall of the curved guide surface on the installation groove 8, causing the locking frame 74 to gradually slide away from the filter screen 77. In turn, the locking frame 74 drives the locking frame 761 to gradually disengage from the filter screen 77, thereby unlocking the filter screen 77. When the installation frame 73 has completely slid out of the installation groove 8, the locking frame 761 is completely disengaged from the locking groove 771, allowing the relevant personnel to take out the filter screen 77.

[0053] Reference Figure 1 One end of the filter box 7, away from the feed pipe 71, is also connected to the top of the pH adjustment tank via a pipe. The pH adjustment tank is used to introduce a reagent for adjusting the pH of the ammonium fluoride wastewater. In the embodiment of the present application, the reagent is NaOH, so that the pH value of the ammonium fluoride wastewater can be adjusted to 10-12. The bottom of the other end of the pH adjustment tank is also connected to the top of the preheating tank 61 via a pipe, so that the ammonium fluoride wastewater can be passed into the preheating tank 61.

[0054] Reference Figure 1 and Figure 6 The bottom of the other end of preheating box 61 is also connected to the top of heater 2 via a pipe. Heater 2 is used to heat the incoming ammonium fluoride wastewater to approximately 45 degrees Celsius. The bottom of the other end of heater 2 is connected to the top of stripping tower 3 via a pipe. The stripping tower is used to remove free ammonia in the ammonium fluoride wastewater and react to form ammonia gas.

[0055] Reference Figure 1 and Figure 7 The water outlet at the bottom of the stripping tower 3 is connected to one end of the preheating pipe 62. The other end of the preheating pipe 62 extends into the preheating box 61 and is spiral in the preheating box 61 to increase the time the warm wastewater discharged from the bottom of the stripping tower 3 flows through the preheating box 61, and finally passes through the preheating box 61 and is connected to the top of the fluoride reactor 63. The fluoride reactor 63 is used to further treat the fluorine-containing wastewater discharged from the stripping tower 3.

[0056] Reference Figure 6 and Figure 7A temperature control mechanism 9 is also provided within the preheating tank 61. The temperature control mechanism 9 comprises a temperature control tube 91, a temperature control valve 92, and a detection assembly 93. One end of the temperature control tube 91 is connected to the end of the preheating tube 62 near the stripping tower 3, and the other end is connected to the top of the fluoride reactor 63. The temperature control valve 92 is provided on the preheating tube 62 and is located between the portion of the preheating tube 62 extending into the preheating tank 61 and the portion connected to the temperature control tube 91. The temperature control valve 92 is used to control the opening and closing of the preheating tube 62.

[0057] Reference Figure 6 and Figure 7 The detection assembly 93 includes a detection component 931 and a control component 932. In the embodiment of the present application, the detection component 931 is configured as a temperature sensor, and the control component 932 is configured as a PLC controller. The detection component 931 is fixedly installed in the preheating tube 62 and is located between the temperature control valve 92 and the temperature control tube 91. The control component 932 is fixedly installed on the outer wall of the preheating box 61. The detection component 931 and the temperature control valve 92 are both electrically connected to the control component 932. The detection component 931 is used to detect the temperature of the wastewater in the preheating tube 62 and feed the detected temperature value back to the control component 932.

[0058] Reference Figure 6 and Figure 7 The control component 932 is configured to receive the temperature value detected by the detection component 931. The control component 932 also pre-stores a preset value, which is the temperature value of the preheated ammonium fluoride wastewater. In the embodiment of the present application, the preset value is 40 degrees Celsius. The control component 932 is configured to compare the temperature value detected by the detection component 931 with the preset value. If the detected temperature value is less than the preset value, the control component 932 controls the temperature control valve 92 to close the preheating tube 62. Otherwise, the control component maintains the preheating tube 62 unobstructed.

[0059] Reference Figure 1 The top of the stripping tower 3 is connected to the bottom of the nitrification tower 4 via a pipeline. The nitrification tower 4 is used to biologically nitrify the introduced mixed gas containing ammonia. The top of the nitrification tower 4 is also connected to the bottom of the pickling tower 5 via a pipeline. This allows the remaining air and a small amount of unreacted ammonia to enter the pickling tower 5 from the top after being separated from the steam and water in the nitrification tower 4. The pickling tower 5 is used to absorb the remaining ammonia into the acid solution. The top of the pickling tower 5 is connected to the outside world, so that the air that meets the emission standards after absorption can be discharged into the atmosphere.

[0060] The implementation principle of a kind of ammonium fluoride wastewater treatment device of the present application embodiment is: during use, preheating pipe 62 passes the warm wastewater that stripping tower 3 bottom ends pass through via preheating pipe 62.During this process, detection part 931 detects the temperature in preheating pipe 62, and when the temperature detected is greater than or equal to a preset value, control part 932 controls temperature control valve 92 to keep preheating pipe 62 unobstructed.During this process, the warm wastewater that stripping tower 3 bottom ends pass through enters the cavity in preheating box 61 via preheating pipe 62, and heat is transferred by the side wall of preheating pipe 62 and the ammonium fluoride wastewater in preheating box 61, thereby heating ammonium fluoride wastewater, realizing preheating of ammonium fluoride wastewater.After preheating, the wastewater of cooling is passed in fluoride reactor 63, is further reacted.

[0061] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. An ammonium fluoride wastewater treatment device, comprising a pH adjusting tank (1), a heater (2), a stripping tower (3), a nitrification tower (4) and a pickling tower (5), wherein the heater (2) is used to heat the ammonium fluoride wastewater discharged from the pH adjusting tank (1), and is characterized in that: The device further comprises a preheating mechanism (6), wherein the preheating mechanism (6) comprises a preheating box (61) and a preheating pipe (62); the pH adjusting tank (1) is connected to the top of the preheating box (61) through a pipeline; the bottom of the preheating box (61) is connected to the top of the heater (2); the bottom of the heater (2) is connected to the top of the stripping tower (3); one end of the preheating pipe (62) is connected to the water outlet of the stripping tower (3); the other end extends and passes through the preheating box (61) and is connected to the fluoride reactor (63); A filter box (7) is further provided on a side of the pH adjustment tank (1) away from the preheating tank (61). One side of the filter box (7) is connected to a feed pipe (71), and the feed pipe (71) is used to connect to an ammonium fluoride wastewater source. The other side of the filter box (7) is connected to the pH adjustment tank (1). A plurality of filter screens (77) are further provided in the filter box (7); The filter box (7) is further provided with a plurality of mounting frames (73), the mounting frames (73) and the filter screens (77) being arranged in a one-to-one correspondence, each of the filter screens (77) being slidably connected to the corresponding mounting frame (73), and the sliding track extending to the outside of the corresponding mounting frame (73), and the side wall of the filter box (7) is further provided with a plurality of mounting grooves (8), the mounting grooves (8) and the mounting frames (73) being in a one-to-one correspondence, and each of the filter screens (77) being slid into the mounting frame (73) via the corresponding mounting groove (8); The filter box (7) is further provided with a closing assembly (72), the closing assembly (72) comprising a plurality of closing frames (721), one end of each closing frame (721) being rotatable with the filter box (7), and the other end being detachably connected to the filter box (7), each closing frame (721) being embedded in the corresponding mounting groove (8) and being used to seal the mounting groove (8); Each of the mounting frames (73) is provided with a locking assembly (76), and each of the locking assemblies (76) includes a locking frame (761) and an elastic member (762). Each of the locking frames (761) is slidably connected to the corresponding mounting frame (73), and one end of each is inserted into the corresponding filter (77). Each of the elastic members (762) is used to allow the corresponding locking frame (761) to be continuously inserted into the corresponding filter (77) through its own elastic force. Each of the mounting frames (73) is provided with a locking frame (74), each of the locking frames (74) is located on one side of the corresponding mounting frame (73) along the width direction, and is slidably connected to the mounting frame (73), and the sliding direction is the height direction of the corresponding mounting frame (73), each of the locking frames (761) is slidably connected to the corresponding locking frame (74), and a guide surface is provided on the inner wall of each of the mounting slots (8) for the corresponding locking frame (74) to abut against, and each of the locking frames (74) is also provided with a pop-up member (75), and the pop-up member (75) is used to use its own elastic force to allow the corresponding locking frame (74) to move away from the corresponding filter (77).

2. An ammonium fluoride wastewater treatment device according to claim 1, characterized in that: Each of the mounting frames (73) is slidably connected to the filter box (7), and the sliding direction is the same as the sliding direction of the corresponding filter screen (77). The sliding path of each of the mounting frames (73) extends out of the corresponding mounting slot (8). The closing assembly (72) further includes a plurality of linkage members (722), and the linkage members (722) correspond to the closing frame (721). The closing frame (721) drives one end of the corresponding mounting frame (73) to slide out of the corresponding mounting slot (8) through the corresponding linkage member (722).

3. An ammonium fluoride wastewater treatment device according to claim 2, characterized in that: Each linkage member (722) includes a linkage frame (7221), one end of each linkage frame (7221) is rotatably connected to the corresponding closed frame (721), and the other end is rotatably connected to the corresponding installation frame (73).

4. An ammonium fluoride wastewater treatment device according to claim 1, characterized in that: The preheating box (61) is further provided with a temperature control mechanism (9), which includes a temperature control tube (91) and a temperature control valve (92). One end of the temperature control tube (91) is connected to an end of the preheating tube (62) away from the fluoride reactor (63), and the other end is connected to the fluoride reactor (63). The temperature control valve (92) is provided on the preheating tube (62) and is used to control the opening and closing of the preheating tube (62).

5. An ammonium fluoride wastewater treatment device according to claim 4, characterized in that: The temperature control mechanism (9) further includes a detection component (93), the detection component (93) including a detection element (931) and a control element (932), the detection element (931) and the temperature control valve (92) are both controlled by the control element (932), the detection element (931) is used to detect the temperature of the liquid in one end of the preheating tube (62) close to the stripping tower (3), and the control element (932) is used to control the opening and closing of the temperature control valve (92) based on the temperature value detected by the detection element (931).

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