Ammonium fluoride wastewater treatment device

Abstract

The invention relates to an ammonium fluoride wastewater treatment device, and relates to the technical field of wastewater treatment. The ammonium fluoride wastewater treatment device comprises a PH regulation pool, a heater, a stripping tower, a nitration tower and an acid pickling tower, the heater is used for heating ammonium fluoride wastewater discharged from the PH regulation pool, the ammonium fluoride wastewater treatment device further comprises a preheating mechanism, the preheating mechanism comprises a preheating box and a preheating pipe, the PH regulation pool is communicated with the top of the preheating box through a pipeline, and the preheating pipe is communicated with the top of the preheating box through a pipeline. The bottom of the preheating box is communicated with the top of the heater, the bottom of the heater is communicated with the top of the stripping tower, one end of the preheating pipe is communicated with the water outlet end of the stripping tower, and the other end of the preheating pipe extends and penetrates through the preheating box and is communicated with a fluoride reactor. The method has the effect of reducing the energy consumption when the ammonium fluoride wastewater is heated.

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, more ammonium fluoride wastewater is often generated. As a wastewater treatment device, ammonium fluoride wastewater treatment device can treat ammonium fluoride wastewater, so it plays an important role.

[0003] There is a kind of ammonium fluoride wastewater treatment device in the prior art, which includes a pH regulating tank, a heater, a stripping tower, a nitrification tower and a pickling tower. The pH regulating tank is connected with a feed pipe and a feed pipe, the feed pipe is used to pass the ammonium fluoride wastewater, and the feed pipe is used to pass the agent for adjusting the pH. The bottom of the pH regulating tank is connected with the heater through a pipeline, and the heater is used to heat the introduced ammonium fluoride wastewater. The bottom of the heater is connected with the top of the stripping tower through a pipeline, and the stripping tower is used to take away the free ammonia in the ammonium fluoride wastewater, and make the ammonium fluoride wastewater form ammonia after reaction. The bottom of the stripping tower is also connected with an outlet pipe, and the outlet pipe is used to pass the warm waste liquid in the stripping tower into the fluoride reactor. The top of the stripping tower is connected with the bottom of the nitrification tower through a pipeline, and the nitrification tower is used to carry out biological nitrification on 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 enter the pickling tower from the top after being separated by the steam and water of the nitrification tower, and the pickling tower is used to make the remaining ammonia 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. When in use, the ammonium fluoride wastewater is passed into the pH regulating tank, and after adjusting the pH value, the ammonium fluoride wastewater enters the heater for heating, and after heating is completed, it is passed into the stripping tower, and the stripping tower takes away the free ammonia in the ammonium fluoride wastewater, and the ammonium fluoride wastewater is reacted to form ammonia, and then the nitrification tower performs biological nitrification on the mixed gas containing ammonia, and then a small part of the incompletely reacted ammonia 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 adjusted by 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, the warm wastewater discharged from the stripping tower cannot be fully utilized, thereby increasing the energy consumption when heating the ammonium fluoride wastewater, thereby increasing energy consumption, so it needs to be improved. Summary of the invention

[0005] In order to reduce the 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: An ammonium fluoride wastewater treatment device comprises a pH blending tank, a heater, a stripping tower, a nitrification 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, 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 end of the stripping tower, and the other end extends and passes through the preheating box and is connected to a fluoride reactor.

[0007] By adopting the above technical scheme, compared with the prior art, the ammonium fluoride wastewater adjusted by the pH adjustment tank is directly heated to a specified temperature by a 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 then reducing the energy consumption when heating the ammonium fluoride wastewater, thereby reducing energy consumption.

[0008] Preferably, a filter box is provided on one side of the pH adjusting tank away from the preheating tank, one side of the filter box is connected to a feed pipe, the feed pipe 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.

[0009] By adopting the above technical solution and setting the filter box, the introduced ammonium fluoride wastewater can be filtered by the filter net 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.

[0010] Preferably, a plurality of installation frames are provided in the filter box, and the installation frames are arranged one-to-one with the filter screens. Each of the filter screens is slidably connected with the corresponding installation frame, and the sliding tracks extend to the outside of the corresponding installation frame. A plurality of installation grooves are also provided on the side walls of the filter box, and the installation grooves are arranged one-to-one with the installation frames, and each of the filter screens slides into the installation frame through the corresponding installation grooves.

[0011] By adopting the above technical solution and setting 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 probability of the filter being blocked after a long period of time due to the difficulty of replacing the filter.

[0012] 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, each of the closing frames is embedded in the corresponding installation groove, and is used to seal the installation groove.

[0013] 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, and after the embedding is completed, the closing frame is connected to the filter box, so that the installation groove can be closed, 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.

[0014] Preferably, each of the installation frames is slidably connected to the filter box, and the sliding direction is the same as the sliding direction of the corresponding filter net. The sliding path of each of the installation frames extends out of the corresponding installation 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 installation frame to slide out of the corresponding installation groove through the corresponding linkage parts.

[0015] By adopting the above technical solution and setting the linkage frame, when the relevant personnel drive the closed frame to rotate, the closed frame can drive the installation frame to slide through the linkage parts 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.

[0016] Preferably, each linkage member comprises a linkage frame, one end of each linkage frame is rotatably connected to the corresponding closed frame, and the other end of each linkage frame is rotatably connected to the corresponding installation frame.

[0017] By adopting the above technical solution, the linkage frame is set so that when the closed frame rotates, the closed frame can drive one end of the linkage frame to move together, so that the other end of the linkage frame is adaptively displaced, and then drive the corresponding installation frame to slide, so that one end of the installation frame gradually slides out of the installation groove, thereby realizing the linkage between the installation frame and the closed frame, facilitating the operation of relevant personnel, and also facilitating the removal of the filter screen on the installation frame by relevant personnel.

[0018] 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 net. Each of the elastic members is used to allow the corresponding locking frame to continue to be inserted into the corresponding filter net through its own elastic force.

[0019] By adopting the above technical solution, the locking assembly is set so that when the filter slides into the installation frame, the locking frame can drive the locking frame to slide in the direction close to the filter under the elastic force of the elastic member, so that one end of the locking frame is inserted into the corresponding filter to lock the filter, thereby achieving fixation between the filter and the installation frame and reducing the probability of accidental slippage of the filter relative to the installation frame.

[0020] Preferably, each of the installation frames is provided with a locking frame, each of the locking frames is located on one side of the corresponding installation frame along the width direction, and is slidably connected to the installation frame, and the sliding direction is the height direction of the corresponding installation 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 of the installation grooves 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.

[0021] 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 net 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 net, thereby realizing automatic unlocking of the filter net, which effectively facilitates the relevant personnel to disassemble the filter net.

[0022] Preferably, the preheating box is also 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 one 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 arranged on the preheating tube and is used to control the opening and closing of the preheating tube.

[0023] 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 waste water 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 waste water 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 waste water in the preheating box, thereby effectively ensuring the preheating effect of the ammonium fluoride waste water.

[0024] Preferably, the temperature control mechanism also includes a detection component, which includes a detection component and a control component. The detection component and the temperature control valve are both controlled by the control component. The detection component is used to detect the temperature of the liquid in the preheating tube close to one end of the stripping tower, and the control component is used to control the opening and closing of the temperature control valve based on the temperature value detected by the detection component.

[0025] 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 waste water 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.

[0026] In summary, the present application includes at least one of the following beneficial technical effects: 1. The preheating mechanism is set 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 waste water in the preheating box through the side wall of the pipe, so as to preheat the ammonium fluoride waste water, realize the reuse of the warm waste water discharged from the stripping tower, effectively increase the temperature of the ammonium fluoride waste water entering the heater, thereby reducing the energy required for 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; 2. The filter box is set so that the introduced ammonium fluoride wastewater can be filtered by the filter screen in the filter box, thereby reducing the fixed impurities in the ammonium fluoride wastewater, 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 ensuring the use effect of the present application; 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 waste water 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 waste water 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 waste water in the preheating box, thereby effectively ensuring the preheating effect of the ammonium fluoride waste water. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a schematic diagram used to illustrate the overall structure of the ammonium fluoride wastewater treatment device in the embodiment of the present application.

[0028] Figure 2 It is a schematic diagram of the structure of the filter box used to reflect the embodiment of the present application.

[0029] Figure 3 It is a structural diagram used to embody the embodiments of the present application.

[0030] Figure 4 yes Figure 3 Enlarged view of part A in the middle.

[0031] Figure 5 It is a structural schematic diagram used to reflect the locking assembly in the embodiment of the present application.

[0032] Figure 6 It is a structural schematic diagram used to reflect the detection component in the embodiment of the present application.

[0033] Figure 7 It is a schematic diagram of the structure of the preheating tube in the embodiment of the present application.

[0034] Explanation of the reference numerals: 1. PH blending tank; 2. Heater; 3. Stripping tower; 4. Nitration 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

[0035] The following is combined with Figure 1-7 This application is described in further detail.

[0036] The present application embodiment discloses an ammonium fluoride wastewater treatment device. Figure 1 The 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 a fluoride reactor 63.

[0037] Reference Figure 1 and Figure 2 A filter box 7 is also 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 inner chamber of the filter box 7. A plurality of mounting grooves 8 are also provided on the side wall of the filter box 7. In the embodiment of the present application, the number of the mounting grooves 8 is set to three and they are evenly distributed along the length direction of the filter box 7. Each mounting groove 8 is connected to the chamber in the filter box 7, and the top wall and the bottom wall of the end of each mounting groove 8 connected to the outside are provided with arc-shaped guide surfaces.

[0038] 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 embodiment of the present application, the number of the sealing frames 721 is set to three, and they are arranged one by one in correspondence with the mounting grooves 8. One end of each sealing frame 721 along the width direction of the filter box 7 is rotatably connected to the filter box 7. One side of each sealing frame 721 close to the filter box 7 is embedded in the mounting groove 8 to seal the corresponding mounting groove 8, and the side is adapted to the inner wall of the mounting groove 8.

[0039] Reference Figure 2 and Figure 4 In the embodiment of the present application, a sealing gasket is also provided on the closed frame 721 to increase the sealing effect of the mounting groove 8. The end of each closed frame 721 away from its own rotating connection end is detachably connected to the filter box 7 through a plurality of bolts. In other embodiments, a special locking structure can also be provided on each closed frame 721 to facilitate the fixing between the closed frame 721 and the filter box 7.

[0040] Reference Figure 3 and Figure 4 Each 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, and 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, two linkage members 722 are provided on each closing frame 721, and are respectively located at the ends of the upper and lower ends of the corresponding closing frame 721.

[0041] Reference Figure 3 and Figure 4Each 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.

[0042] Reference Figure 3 and Figure 4 In the initial state, one side of the closing frame 721 is embedded in the corresponding installation groove 8, and when the installation groove 8 is sealed, the installation frame 73 is completely located in the filter box 7, and one end thereof abuts against the inner wall of the installation groove 8. When the closing frame 721 rotates and gradually opens, the closing frame 721 drives the linkage frame 7221 to move, so that the linkage frame 7221 moves away from one end of the corresponding closing frame 721, drives the corresponding installation frame 73 to slide, and causes one end of the installation frame 73 to slide out of the corresponding installation groove 8.

[0043] Reference Figure 4 and Figure 5 Each mounting frame 73 is provided with a locking frame 74 at one end close to the corresponding closed frame 721. The number of locking frames 74 on each mounting frame 73 is set to two, and they are respectively located at the upper and lower sides of the mounting frame 73. Each locking frame 74 is sleeved on the corresponding side of the corresponding mounting frame 73, and is slidably connected with the corresponding mounting frame 73, and the sliding direction is the height direction of the mounting frame 73. When the mounting frame 73 is completely located in 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 groove 8.

[0044] Reference Figure 4 and Figure 5 Each locking frame 74 is provided with an ejection member 75. In the embodiment of the present application, each ejection member 75 is provided 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 protruding portion on the corresponding mounting frame 73, so that when the mounting frame 73 gradually slides out of the mounting groove 8, the pressure spring can drive the corresponding locking frame 74 away from the mounting frame 73 through its own elastic force.

[0045] Reference Figure 4 and Figure 5Each locking frame 74 is provided with a locking assembly 76, each locking assembly 76 includes 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. A guide surface is provided at one end of each locking frame 761 close to the corresponding mounting frame 73, and the guide surface on each locking frame 761 is located on the side close to the closing frame 721.

[0046] 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 of each pressure spring is against the inner wall of the corresponding locking frame 74, and the other end of each pressure spring is against one end of the corresponding locking frame 761 close to the locking frame 74.

[0047] Reference Figure 3 , Figure 4 and Figure 5 Each installation frame 73 is also provided with a filter screen 77, and each installation frame 73 is sleeved on the corresponding filter screen 77 and is slidably connected with the corresponding filter screen 77, so that the filter screen 77 can slide out from the opening of the corresponding installation frame 73. Each filter screen 77 is provided with locking grooves 771 on the upper and lower sides of one end close to the closing frame 721, so that the corresponding locking frame 761 can be inserted therein to lock the filter screen 77.

[0048] Reference Figure 3 , Figure 4 and Figure 5 In the initial state, that is, when the installation frame 73 is completely located in the filter box 7, the locking frame 761 is inserted into the locking groove 771 on the corresponding filter screen 77 to lock 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 arc-shaped guide surface on the installation groove 8, so that the locking frame 74 gradually slides away from the filter screen 77, and then 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 completely slides out of the installation groove 8, the locking frame 761 completely disengages from the locking groove 771, and the relevant personnel can take out the filter screen 77 at this time.

[0049] Reference Figure 1The end of the filter box 7 away from the feed pipe 71 is also connected to the top of the pH adjustment tank through a pipeline. 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 through a pipeline, so that the ammonium fluoride wastewater can be passed into the preheating tank 61.

[0050] Reference Figure 1 and Figure 6 The bottom of the other end of the preheating box 61 is also connected to the top of the heater 2 through a pipeline, and the heater 2 is used to heat the introduced ammonium fluoride wastewater to heat the ammonium fluoride wastewater to about 45 degrees Celsius. The bottom of the other end of the heater 2 is connected to the top of the stripping tower 3 through a pipeline, and the gas tower is used to take away the free ammonia in the ammonium fluoride wastewater and make the ammonium fluoride wastewater form ammonia gas after reaction.

[0051] 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, and 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 for the warm wastewater from the bottom of the stripping tower 3 to flow 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 from the stripping tower 3.

[0052] Reference Figure 6 and Figure 7 A temperature control mechanism 9 is also provided in the preheating box 61, and the temperature control mechanism 9 includes 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 one end of the preheating tube 62 close to 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 part of the preheating tube 62 extending into the preheating box 61 and the part 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.

[0053] Reference Figure 6 and Figure 7 , the detection component 93 includes a detection component 931 and a control component 932. In the embodiment of the present application, the detection component 931 is set as a temperature sensor, and the control component 932 is set 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.

[0054] Reference Figure 6 and Figure 7 The control component 932 is used to receive the temperature value detected by the detection component 931. The control component 932 also stores a preset value in advance. The preset value is the temperature value of the ammonium fluoride wastewater after preheating. In the embodiment of the present application, the preset value is 40 degrees Celsius. The control component 932 is used to compare the temperature value detected by the detection component 931 with the preset value, and when the detected temperature value is less than the preset value, control the temperature control valve 92 to close the preheating tube 62, otherwise keep the preheating tube 62 unobstructed.

[0055] Reference Figure 1 The top of the stripping tower 3 is connected to the bottom of the nitrification tower 4 through a pipeline, and the nitrification tower 4 is used to perform biological nitrification on the mixed gas containing ammonia. The top of the nitrification tower 4 is also connected to the lower part of the pickling tower 5 through a pipeline, so that the remaining air and a small part of the ammonia that has not been completely reacted can 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 allow the remaining ammonia to be absorbed by 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 introduced into the atmosphere.

[0056] The implementation principle of an ammonium fluoride wastewater treatment device of the present application embodiment is: when in use, the preheating pipe 62 passes the warm wastewater from the bottom of the stripping tower 3 through the preheating pipe 62. In this process, the detection member 931 detects the temperature in the preheating pipe 62, and when the detected temperature is greater than or equal to the preset value, the control member 932 controls the temperature control valve 92 to keep the preheating pipe 62 unobstructed. In this process, the warm wastewater from the bottom of the stripping tower 3 enters the cavity in the preheating box 61 through the preheating pipe 62, and heat is transferred through the side wall of the preheating pipe 62 and the ammonium fluoride wastewater in the preheating box 61, thereby heating the ammonium fluoride wastewater and realizing preheating of the ammonium fluoride wastewater. After preheating, the cooled wastewater is passed into the fluoride reactor 63 for further reaction.

[0057] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope 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 invention also 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 through the preheating box (61) and is connected to a fluoride reactor (63).

2. An ammonium fluoride wastewater treatment device according to claim 1, characterized in that: A filter box (7) is further provided on a side of the pH adjusting tank (1) away from the preheating tank (61); one side of the filter box (7) is connected to a feed pipe (71); 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 adjusting tank (1); and a plurality of filter screens (77) are further provided in the filter box (7).

3. An ammonium fluoride wastewater treatment device according to claim 2, characterized in that: A plurality of mounting frames (73) are also provided in the filter box (7), the mounting frames (73) and the filter screens (77) being arranged one-to-one correspondingly, 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 a plurality of mounting grooves (8) are also provided on the side wall of the filter box (7), the mounting grooves (8) and the mounting frames (73) being one-to-one correspondingly, and each of the filter screens (77) slidingly enters the mounting frame (73) via the corresponding mounting groove (8).

4. An ammonium fluoride wastewater treatment device according to claim 3, characterized in that: The filter box (7) is also provided with a sealing component (72), and the sealing component (72) includes a plurality of sealing frames (721), one end of each of the sealing frames (721) is rotatable with the filter box (7), and the other end is detachably connected with the filter box (7), and each of the sealing frames (721) is embedded in the corresponding installation groove (8) and is used to seal the installation groove (8).

5. An ammonium fluoride wastewater treatment device according to claim 4, characterized in that: Each of the installation 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 installation frames (73) extends out of the corresponding installation slot (8). The closing component (72) also 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 installation frame (73) to slide out of the corresponding installation slot (8) through the corresponding linkage member (722).

6. An ammonium fluoride wastewater treatment device according to claim 5, characterized in that: Each linkage member (722) comprises 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).

7. An ammonium fluoride wastewater treatment device according to claim 3, characterized in that: Each of the mounting frames (73) is provided with a locking assembly (76), and each of the locking assemblies (76) comprises 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 locking frame is inserted into the corresponding filter screen (77). Each of the elastic members (762) is used to allow the corresponding locking frame (761) to be continuously inserted into the corresponding filter screen (77) through its own elastic force.

8. An ammonium fluoride wastewater treatment device according to claim 7, characterized in that: 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 grooves (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 screen (77).

9. An ammonium fluoride wastewater treatment device according to claim 1, characterized in that: The preheating box (61) is also provided with a temperature control mechanism (9), and the temperature control mechanism (9) includes a temperature control tube (91) and a temperature control valve (92). One end of the temperature control tube (91) is connected to one 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 arranged on the preheating tube (62) and is used to control the opening and closing of the preheating tube (62).

10. An ammonium fluoride wastewater treatment device according to claim 9, characterized in that: The temperature control mechanism (9) further comprises a detection component (93), wherein the detection component (93) comprises a detection element (931) and a control element (932), wherein the detection element (931) and the temperature control valve (92) are both controlled by the control element (932), wherein 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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