Device and method for treating isooctyl thioglycolate wastewater

Abstract

The invention belongs to the technical field of wastewater treatment equipment, and particularly relates to an isooctyl thioglycolate wastewater treatment device and method.The isooctyl thioglycolate wastewater treatment device comprises a water conveying pipeline, an adsorption tower, a catalysis tower, evaporation equipment and a desalting filter; the adsorption tower and the catalysis tower are jointly provided with a filler circulating mechanism; the filler circulating mechanism is used for driving filler to circularly flow in the adsorption tower and the catalysis tower; by arranging the filler circulating mechanism, under the driving of the driving wheel, the storage box in which the filler is stored circularly moves in the adsorption tower and the catalytic tower, and in the circulating process, organic matters in wastewater are continuously transferred into the catalytic tower to be oxidized and decomposed, so that on one hand, the filler replacement frequency is relatively high through the circulating movement mode, and on the other hand, the treatment efficiency is improved; on the other hand, the automatic replacement of the filler can effectively enhance the automation degree of the wastewater treatment process, so that the wastewater treatment convenience is improved.

Description

Technical Field

[0001] The invention belongs to the technical field of wastewater treatment equipment, in particular to a device and method for treating isooctyl thioglycolate wastewater. Background Art

[0002] As the market demand for organotin heat stabilizers has expanded rapidly, the production demand for isooctyl thioglycolate, one of its main raw materials, has expanded. Correspondingly, the amount of wastewater from the production of isooctyl thioglycolate has increased, causing increased pressure on the supporting wastewater treatment equipment.

[0003] When treating the isooctyl thioacetate production wastewater, since the wastewater contains more organic poisons and high salt content, it is usually necessary to combine distillation, catalytic oxidation and other processes to achieve desalination and removal of organic matter from the isooctyl thioacetate production wastewater. In order to reduce the treatment cost of isooctyl thioacetate production wastewater, related technologies use air as an oxidant, combined with a high temperature and high pressure environment, to achieve oxidative decomposition of organic matter, effectively enhancing the treatment efficiency of isooctyl thioacetate production wastewater. However, in actual application, it is found that on the one hand, catalytic oxidation is directly carried out in the raw water of isooctyl thioacetate production wastewater, which is limited by the complex composition of the raw water, resulting in low catalytic oxidation efficiency and high energy consumption in the treatment process.

[0004] The related technology discloses a method for treating isooctyl thioacetate production wastewater and a treatment device thereof, and the application number is CN2021111090571. In this scheme, two adsorption towers A and B are used alternately to first adsorb isooctyl thioacetate production wastewater, and then the adsorbent is catalytically oxidized and degraded. After the adsorption tower A reaches adsorption saturation, the temperature is increased and air is passed through for catalytic oxidation and degradation. The wastewater enters the adsorption tower B for separation of organic matter and salt. The device can operate continuously, thereby improving the treatment efficiency of isooctyl thioacetate wastewater. However, in actual application, it is found that, on the one hand, due to the need for heating treatment during the catalytic oxidation process, when the adsorption tower is heated as a whole, the energy consumption is high and the heating efficiency is slow. On the other hand, during the alternating operation, it is necessary to continuously detect the saturation degree of the adsorbent in the adsorption tower, which makes the entire treatment process more cumbersome and the degree of automation is low.

[0005] In view of this, the present invention proposes a treatment device and method for isooctyl thioglycolate wastewater, which are used to solve the above technical problems. Summary of the invention

[0006] In order to make up for the deficiencies of the prior art and solve the above-mentioned technical problems, the present invention proposes a treatment device and method for isooctyl thioglycolate wastewater.

[0007] The technical solution adopted by the present invention to solve the technical problem is as follows: the treatment device of isooctyl thioglycolate wastewater of the present invention comprises a water delivery pipeline, an adsorption tower, a catalytic tower, an evaporation device and a desalination filter;

[0008] The adsorption tower, evaporation equipment and desalination filter are connected in sequence through a water supply pipeline;

[0009] An air compressor is installed at the bottom of the catalytic tower, an air heating device is installed at the output end of the air compressor, and an exhaust pipe is installed at the top of the catalytic tower;

[0010] The adsorption tower and the catalytic tower are both equipped with a packing circulation mechanism, which is used to drive the packing to circulate in the adsorption tower and the catalytic tower;

[0011] The filler circulation mechanism comprises a butt joint pipe, a circulation rope, a driving wheel and a storage box;

[0012] The butt-joint pipe is fixedly installed on the adsorption tower and the catalytic tower, and the butt-joint pipe and the inner cavity of the adsorption tower and the inner cavity of the catalytic tower form an annular channel;

[0013] The butt-joint pipe, the adsorption tower and the inner wall of the catalytic tower are provided with symmetrically designed rotating grooves, and the rotating grooves are slidably installed with circulating ropes;

[0014] The driving wheel is rotatably mounted in the rotating groove, the driving wheel is externally connected to a driving motor, and the circulating rope sleeve is arranged on a plurality of driving wheels;

[0015] A storage box is installed on the two circulation cables. The storage box is a mesh box with evenly opened holes on the surface. The storage boxes are arranged at equal intervals on the circulation cables. Fe catalyst fillers loaded with activated carbon are stored in the storage boxes.

[0016] Preferably, rotating shafts are installed on both sides of the storage box, the rotating shafts are rotatably connected to the circulating rope, the storage box is a chamfered pyramid-shaped structure, the top of the storage box is opened, and the center of gravity of the storage box is located below the rotating shaft.

[0017] Preferably, the storage box consists of a box body and a mounting ring, the mounting ring is fixedly installed between two rotating shafts, the maximum end size of the box body is larger than the inner diameter of the mounting ring, and the box body is snap-fitted and installed on the mounting ring.

[0018] Preferably, the box body is composed of a bottom plate, a deflection plate, a fan-shaped piece and a limit rod, the bottom plate is a C-shaped structure, deflection grooves are provided on both sides of the bottom plate, one end of the deflection plate is rotatably installed in the deflection groove, a symmetrically designed fan-shaped piece is fixedly installed on the deflection plate, the fan-shaped piece is slidingly connected to the side wall of the bottom plate, a limit groove is provided on the bottom plate, a limit rod is fixedly installed on the fan-shaped piece, the limit rod extends into the limit groove, and the limit rod cooperates with the mounting ring to adjust the opening area of ​​the top end of the box body.

[0019] Preferably, it also includes a distribution component, which is located inside the catalytic tower and is used to distribute the Fe catalyst filler loaded with activated carbon in the box;

[0020] The apportionment assembly includes a lifting plate and a friction plate;

[0021] The inner walls of the adsorption tower and the catalytic tower are both smoothly arranged, the inner wall of the catalytic tower is fixedly mounted with a symmetrically designed friction plate, and lifting plates are fixedly mounted on both sides of the bottom plate, and the friction plates are located on the movement path of the lifting plates.

[0022] Preferably, the deflection plates are provided with connecting slots on the sides away from each other, connecting beads are fixedly installed on the mounting ring, the connecting beads extend into the connecting slots, a through slot is provided at the top of the connecting slots, and the opening width of the connecting slots is smaller than the diameter of the connecting beads.

[0023] Preferably, the apportionment component further comprises a leak-proof plate, and the inner wall of the catalytic tower is elastically mounted with a symmetrically designed leak-proof plate through springs, and the leak-proof plate corresponds one-to-one to the friction plate.

[0024] Preferably, the gap between the two leakage prevention plates is distributed in a Y shape, and the gap between the two leakage prevention plates is located on the movement path of the storage box.

[0025] Preferably, a mounting plate is fixedly mounted on the inner wall of the catalytic tower, the anti-leakage plate is slidably mounted on the mounting plate, and the spacing between the mounting plates is the same as the maximum width of the storage box.

[0026] A method for treating isooctyl thioglycolate wastewater, the method comprising the following steps:

[0027] S1. Filling: Open the discharge port on the catalytic tower, and drive the driving wheel to rotate through a preset control program, thereby filling the prefabricated granular activated carbon-loaded Fe catalyst filler into the storage box;

[0028] S2. Countercurrent adsorption: When the packing is loaded, the wastewater is sent into the adsorption tower through the water supply pipe at the top of the adsorption tower. During the downward flow of the wastewater, it contacts the packing in the storage box layer by layer, thereby achieving adsorption and filtration of the wastewater;

[0029] S3, catalytic preheating: the air compressor continuously extracts outside air, heats it through the air heating device and sends it into the catalytic tower to preheat the inside of the catalytic tower;

[0030] S4: Oxidative decomposition: The circulating rope rotates continuously, carrying the storage box into the catalytic tower. After the filling is distributed by the distribution component, it contacts the rising hot air to achieve an in-situ catalytic oxidation reaction of the filling;

[0031] S5: Evaporation and desalination: The wastewater after adsorption and filtration and the waste gas discharged from the exhaust pipe enter the evaporation equipment. After evaporation treatment by the evaporation equipment, the evaporation mother liquor is separated by the desalination filter.

[0032] The beneficial effects of the present invention are as follows:

[0033] 1. The device and method for treating isooctyl thioglycolate wastewater described in the present invention provide a packing circulation mechanism, and under the drive of a driving wheel, a storage box storing the packing circulates in an adsorption tower and a catalytic tower, and during the circulation, organic matter in the wastewater is continuously transferred to the catalytic tower for oxidation and decomposition. On the one hand, the circulating motion mode promotes a faster frequency of packing replacement, thereby making the packing have a better adsorption and transfer effect on the organic matter in the wastewater. On the other hand, the automatic replacement of the packing can effectively enhance the automation degree of the wastewater treatment process, thereby improving the convenience of wastewater treatment.

[0034] 2. The device and method for treating isooctyl thioglycolate wastewater described in the present invention control the deformation degree of the box body. On the one hand, the deformable setting of the box body can make the loading and unloading of the filler in the box body more convenient. On the other hand, the deformable setting of the box body can make it more convenient to load and unload the box body onto the mounting ring. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] The present invention will be further described below in conjunction with the accompanying drawings.

[0036] Figure 1 It is a schematic diagram of the overall framework of the present invention;

[0037] Figure 2 It is a three-dimensional diagram of the assembly of the adsorption tower and the catalytic tower in the present invention;

[0038] Figure 3 It is a three-dimensional diagram of the assembly of the adsorption tower, the catalytic tower and the packing circulation mechanism;

[0039] Figure 4 It is the internal structure diagram of the adsorption tower and the catalytic tower;

[0040] Figure 5 It is a three-dimensional diagram of the packing circulation mechanism;

[0041] Figure 6 It is a three-dimensional diagram of a storage box;

[0042] Figure 7 It is a disassembled stereoscopic diagram of the storage box;

[0043] Figure 8 It is a three-dimensional diagram of the through slot and the connecting slot;

[0044] Fig. 9 The present invention is a method flow chart of the method for treating isooctyl thioglycolate wastewater;

[0045] In the figure: 1. water supply pipeline; 11. evaporation equipment; 12. desalination filter; 2. adsorption tower; 21. catalytic tower; 22. air compressor; 23. exhaust pipe; 24. butt pipe; 25. circulation rope; 26. rotating groove; 27. driving wheel; 28. driving motor; 29. ​​rotating shaft; 3. storage box; 31. mounting ring; 32. bottom plate; 33. deflection plate; 34. fan-shaped plate; 35. limit rod; 36. deflection groove; 37. limit groove; 4. lifting plate; 41. friction plate; 42. connecting card slot; 43. through slot; 44. connecting bead; 5. leak-proof plate; 51. mounting plate. DETAILED DESCRIPTION

[0046] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0047] like Figures 1 to 8 As shown, the treatment device of isooctyl thioglycolate wastewater of the present invention comprises a water supply pipeline 1, an adsorption tower 2, a catalytic tower 21, an evaporation device 11 and a desalination filter 12;

[0048] The adsorption tower 2, the evaporation device 11 and the desalination filter 12 are connected in sequence through the water supply pipeline 1;

[0049] An air compressor 22 is installed at the bottom of the catalytic tower 21, an air heating device is installed at the output end of the air compressor 22, and an exhaust pipe 23 is installed at the top of the catalytic tower 21;

[0050] The adsorption tower 2 and the catalytic tower 21 are both provided with a packing circulation mechanism, and the packing circulation mechanism is used to drive the packing to circulate in the adsorption tower 2 and the catalytic tower 21;

[0051] The filler circulation mechanism includes a butt joint pipe 24, a circulation rope 25, a driving wheel 27 and a storage box 3;

[0052] The butt joint 24 is fixedly mounted on the adsorption tower 2 and the catalytic tower 21, and the butt joint 24 and the inner cavity of the adsorption tower 2 and the inner cavity of the catalytic tower 21 form an annular channel;

[0053] The butt joint 24, the adsorption tower 2 and the inner wall of the catalytic tower 21 are provided with a symmetrically designed rotating groove 26, and a circulating rope 25 is slidably installed in the rotating groove 26;

[0054] The driving wheel 27 is rotatably mounted in the rotating groove 26, the driving wheel 27 is externally connected to a driving motor 28, and the circulating rope 25 is sleeved on a plurality of driving wheels 27;

[0055] A storage box 3 is installed on the two circulation ropes 25 . The storage box 3 is a mesh box with evenly opened holes on the surface. The storage boxes 3 are arranged at equal intervals on the circulation rope 25 . The storage boxes 3 store Fe catalyst fillers loaded with activated carbon.

[0056] In the treatment process of isooctyl thioacetate wastewater, in order to improve the efficiency of wastewater treatment and the convenience of the process, the present invention provides a packing circulation mechanism on the adsorption tower 2 and the catalytic tower 21, and utilizes the packing circulation mechanism to cause the packing to circulate in the adsorption tower 2 and the catalytic tower 21, thereby improving the efficiency of isooctyl thioacetate wastewater treatment and enhancing the convenience of its wastewater treatment procedure.

[0057] Specifically, when treating the thioacetic acid wastewater, the stored wastewater flows into the adsorption tower 2 through the water delivery pipe 1, and moves from the top of the adsorption tower 2 to the bottom of the tower under the action of gravity, and the air compressor 22 is placed in the catalytic tower 21 to continuously extract the outside air and pump it into the air heating device. The heated air is transported to the catalytic tower 21, so that the catalytic tower 21 maintains a high temperature environment. At the same time, the packing circulation mechanism is started, and the storage box 3 in the packing circulation mechanism stores the packing, and the circulation rope is driven by the driving wheel 27 of the external driving motor 28. 25 rotates at a constant speed, and the circulation rope 25 drives the storage box 3 to move from the bottom of the adsorption tower 2 to the top of the tower, and then enters the catalytic tower 21 through the docking pipe 24, moves from the top of the catalytic tower 21 to the bottom of the tower, and finally enters the adsorption tower 2 again through the docking pipe 24. During this process, the adsorbent in the storage box 3 first moves in the opposite direction to the wastewater, so that the adsorbent adsorbs the organic matter in the wastewater. As the storage box 3 continues to move toward the top of the adsorption tower 2, the Fe catalyst filler loaded with activated carbon in the storage box 3 is gradually saturated. At this time, the storage box 3 enters through the docking pipe 24. The hot air in the catalytic tower 21 moves in the opposite direction to the hot air in the catalytic tower 21. The hot air heats and oxidizes the storage box 3 and the Fe catalyst filler loaded with activated carbon therein. During the heating and oxidation process, the organic matter is gradually decomposed into H2O, CO2, and SO4, and enters the exhaust pipe 23 together with the air, while the filler is gradually regenerated. Therefore, when the storage box 3 and the filler therein move to the bottom of the catalytic tower 21, the filler is regenerated at this time, and the regenerated filler enters the adsorption tower 2 again, thereby realizing the circulation movement of the filler. During the circulation process of the filler, The organic matter in the wastewater is continuously transferred to the catalytic tower 21 for decomposition, and the wastewater after adsorption and impurity removal flows into the evaporation equipment 11 through the water supply pipe 1 at the bottom of the adsorption tower 2. At the same time, the exhaust pipe 23 is also connected to the evaporation equipment 11, and the decomposed gaseous products are also transported to the evaporation equipment 11, and then the evaporation equipment 11 is used to heat and evaporate the wastewater. After the evaporation is completed, the product consists of steam and concentrated mother liquor, wherein the steam can be recovered by condensation and the like, and the concentrated mother liquor flows into the desalination filter 12, and the solid salt and filtrate are output after filtration.

[0058] The present invention provides a filler circulation mechanism, and under the drive of the driving wheel 27, the storage box 3 containing the filler circulates in the adsorption tower 2 and the catalytic tower 21, and during the circulation process, the organic matter in the wastewater is continuously transferred to the catalytic tower 21 for oxidation and decomposition. On the one hand, the circulating motion method promotes a faster frequency of filler replacement, thereby making the filler have a better adsorption and transfer effect on the organic matter in the wastewater. On the other hand, the automatic replacement of the filler can effectively enhance the degree of automation of the wastewater treatment process, thereby improving the convenience of wastewater treatment.

[0059] As a preferred embodiment of the present invention, rotating shafts 29 are installed on both sides of the storage box 3, and the rotating shafts 29 are rotatably connected to the circulating rope 25. The storage box 3 is a chamfered pyramid-shaped structure, and the top of the storage box 3 is opened. The center of gravity of the storage box 3 is located below the rotating shaft 29.

[0060] When the storage box 3 moves with the filler, there may be granular impurities in the wastewater. Therefore, in order to enhance the adsorption and filtration effect of the wastewater, the top of the storage box 3 is opened so that the wastewater can directly contact the filler. When the wastewater moves downward through the gaps in the filler, the impurities and organic matter in the wastewater are intercepted and adsorbed by the filler. Then, as the storage box 3 is transferred from the adsorption tower 2 to the catalytic tower 21, the movement direction of the circulation rope 25 changes. However, since the storage box 3 is rotatably connected to the circulation rope 25 through the rotating shaft 29, and the center of gravity of the storage box 3 is located below the rotating shaft 29, under the action of gravity, the storage box 3 rotatably installed between the circulation ropes 25 always keeps its opening facing upward and moves with the circulation rope 25.

[0061] As a preferred embodiment of the present invention, the storage box 3 consists of a box body and a mounting ring 31 . The mounting ring 31 is fixedly installed between the two rotating shafts 29 . The maximum end size of the box body is larger than the inner diameter of the mounting ring 31 . The box body is snap-fitted onto the mounting ring 31 .

[0062] During long-term use, the filler in the storage box 3 may break or fail. In order to facilitate the replacement of the filler in the storage box 3, the storage box 3 is split into a box body and a mounting ring 31 in the present invention, wherein the mounting ring 31 is directly fixedly connected to the rotating shaft 29, and the box body is placed on the mounting ring 31. Under the restriction of the shapes of the box body and the mounting ring 31, the box body and the mounting ring 31 are stably assembled. When replacing the filler, the staff can directly pull up the box body, and then take out and replace the box body and the filler inside.

[0063] As a preferred embodiment of the present invention, the box body is composed of a bottom plate 32, a deflection plate 33, a fan-shaped piece 34 and a limit rod 35. The bottom plate 32 is a C-shaped structure. Deflection grooves 36 are provided on both sides of the bottom plate 32. One end of the deflection plate 33 is rotatably installed in the deflection groove 36. A symmetrically designed fan-shaped piece 34 is fixedly installed on the deflection plate 33. The fan-shaped piece 34 is slidably connected to the side wall of the bottom plate 32. A limit groove 37 is provided on the bottom plate 32. A limit rod 35 is fixedly installed on the fan-shaped piece 34. The limit rod 35 extends into the limit groove 37. The limit rod 35 cooperates with the mounting ring 31 to adjust the opening area of ​​the top end of the box body.

[0064] In order to further enhance the effect of replacing the filler in the box, the box in the present invention is composed of a bottom plate 32, a deflection plate 33, a fan-shaped disk and a limiting rod 35, wherein the bottom plate 32, the deflection plate 33 and the fan-shaped piece 34 surround a box-type structure with a variable width, and the limiting rod 35 cooperates with the limiting groove 37, so that the adjustable angle of the structure formed by the deflection plate 33 and the fan-shaped piece 34 is controlled, that is, the deformation degree of the box is controlled. On the one hand, the deformable setting of the box can make the loading and unloading of the filler in the box more convenient, and on the other hand, the deformable box can make it more convenient to load and unload the box onto the mounting ring 31.

[0065] As a preferred embodiment of the present invention, it also includes a distribution component, which is located inside the catalytic tower 21 and is used to distribute the Fe catalyst filler loaded with activated carbon in the box;

[0066] The apportionment assembly includes a lifting plate 4 and a friction plate 41;

[0067] The inner walls of the adsorption tower 2 and the catalytic tower 21 are both smoothly arranged. A symmetrically designed friction plate 41 is fixedly installed on the inner wall of the catalytic tower 21. Lifting plates 4 are fixedly installed on both sides of the bottom plate 32. The friction plate 41 is located on the movement path of the lifting plate 4.

[0068] The arrangement of the apportionment component can enable the storage box 3 to be in different states in the adsorption tower 2 and the catalytic tower 21. In the adsorption tower 2, under the action of gravity, the box body has a tendency to move downward along the inner cavity of the mounting ring 31. Restricted by the mounting ring 31, the limiting rod 35, and the limiting groove 37, the box body width is reduced and the filler depth is increased, so that the flow path of the wastewater in the filler is increased, and the adsorption and filtration effect of the wastewater is enhanced. After the storage box 3 enters the catalytic tower 21, when the lifting plate 4 on the storage box 3 is aligned with the friction plate 41, at this time, the lifting plate 4 and the friction plate 4 1, the movement of the box is hindered. At this time, the speed at which the mounting ring 31 follows the circulation rope 25 to move toward the bottom of the catalytic tower 21 is deviated from the speed at which the box moves downward, thereby causing the box and the mounting ring 31 to move relative to each other. Under the action of gravity, the deflection plate 33 that loses the restriction of the mounting ring 31 rotates around the deflection groove 36, thereby increasing the width of the box, reducing the depth of the filler in the box, and increasing the distribution area, thereby facilitating the heating and oxidation of the filler and the dispersion of the products after the oxidation and decomposition of organic matter.

[0069] As a preferred embodiment of the present invention, the distribution component further includes a leakage-proof plate 5 , and a symmetrically designed leakage-proof plate 5 is installed on the inner wall of the catalytic tower 21 through spring elasticity, and the leakage-proof plate 5 corresponds to the friction plate 41 one by one.

[0070] The gap between the two leakage-proof plates 5 is distributed in a Y shape, and the gap between the two leakage-proof plates 5 is located on the moving path of the storage box 3 .

[0071] A mounting plate 51 is fixedly mounted on the inner wall of the catalytic tower 21 , and the leak-proof plate 5 is slidably mounted on the mounting plate 51 . The spacing between the mounting plates 51 is the same as the maximum width of the storage box 3 .

[0072] The anti-leakage plate 5 is set to cover the two side walls of the box after the box and the mounting ring 31 have relative movement, so as to prevent the filler from moving out of the box during the process of increasing the width of the box and distributing the flow of the filler. The mounting plate 51 is set to guide the hot air flow moving from bottom to top, thereby enhancing the contact effect between the hot air flow and the filler.

[0073] As a preferred embodiment of the present invention, the deflection plates 33 are each provided with a connecting slot 42 on one side away from each other, a connecting bead 44 is fixedly installed on the mounting ring 31, the connecting bead 44 extends into the connecting slot 42, a through slot 43 is provided at the top of the connecting slot 42, and the opening width of the connecting slot 42 is smaller than the diameter of the connecting bead 44.

[0074] In order to prevent the box body from being separated from the mounting ring 31, a connecting column is provided on the mounting ring 31, and a connecting card slot 42 is provided on the deflection plate 33. During assembly, when the box body is shrunk to the minimum, the through slot 43 on the deflection plate 33 is aligned with the connecting bead 44, and the diameter of the through slot 43 is larger than the diameter of the connecting bead 44, so that the connecting bead 44 enters the connecting card slot 42 through the through slot 43. Then, when the lifting plate 4 on the bottom plate 32 is subjected to the resistance of the friction plate 41, the box body moves upward compared to the mounting ring 31, but Since the diameter of the connecting bead 44 is larger than the opening diameter of the connecting slot 42, the deflection plate 33 cannot be separated from the connecting bead 44, so the deflection plate 33 is forced to deflect, resulting in an increase in the width of the box body. This can not only ensure the stability of the box body's shape changes in the catalytic tower 21, but also prevent the box body from being separated from the mounting ring 31. During manual disassembly, it is only necessary to manually press the two deflection plates 33 so that the box body always maintains the minimum width, and at the same time lift the box body to allow the connecting bead 44 to detach from the connecting slot 42 from the through groove 43.

[0075] like Fig. 9 As shown, a method for treating isooctyl thioglycolate wastewater comprises the following steps:

[0076] S1, filling: opening the discharge port on the catalytic tower 21, and driving the driving wheel 27 to rotate through a preset control program, thereby filling the prefabricated granular activated carbon-loaded Fe catalyst filler into the storage box 3;

[0077] S2, countercurrent adsorption: when the packing is loaded, the wastewater is sent into the adsorption tower 2 through the water supply pipe 1 at the top of the adsorption tower 2. During the downward flow of the wastewater, it contacts the packing in the storage box 3 layer by layer, thereby achieving adsorption and filtration of the wastewater;

[0078] S3, catalytic preheating: the air compressor 22 continuously extracts outside air, and sends it into the catalytic tower 21 after being heated by the air heating device, so as to preheat the inside of the catalytic tower 21;

[0079] S4: Oxidative decomposition: The circulating rope 25 rotates continuously, carrying the storage box 3 into the catalytic tower 21. After the filling material is distributed by the distribution component, it contacts the rising hot air, realizing an in-situ catalytic oxidation reaction of the filling material.

[0080] S5: Evaporation and desalination: The wastewater after adsorption and filtration and the waste gas discharged from the exhaust pipe 23 enter the evaporation equipment 11. After evaporation treatment by the evaporation equipment 11, the evaporation mother liquid is separated by the desalination filter 12.

[0081] The above shows and describes the basic principles, main features and advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A treatment device for isooctyl thioglycolate wastewater, comprising a water supply pipeline (1), an adsorption tower (2), a catalytic tower (21), an evaporation device (11) and a desalination filter (12); The adsorption tower (2), the evaporation device (11) and the desalination filter (12) are connected in sequence via a water supply pipeline (1); An air compressor (22) is installed at the bottom of the catalytic tower (21), an air heating device is installed at the output end of the air compressor (22), and an exhaust pipe (23) is installed at the top of the catalytic tower (21); Features: The adsorption tower (2) and the catalytic tower (21) are both provided with a packing circulation mechanism, and the packing circulation mechanism is used to drive the packing to circulate in the adsorption tower (2) and the catalytic tower (21); The filler circulation mechanism comprises a butt joint pipe (24), a circulation rope (25), a driving wheel (27) and a storage box (3); The butt-joint pipe (24) is fixedly mounted on the adsorption tower (2) and the catalytic tower (21), and the butt-joint pipe (24) and the inner cavities of the adsorption tower (2) and the catalytic tower (21) form an annular channel; The butt joint (24), the adsorption tower (2) and the catalytic tower (21) are provided with symmetrically designed rotating grooves (26) on their inner walls, and a circulating rope (25) is slidably installed in the rotating grooves (26); The driving wheel (27) is rotatably mounted in the rotating groove (26), the driving wheel (27) is externally connected to a driving motor (28), and the circulating rope (25) is sleeved on a plurality of driving wheels (27); A storage box (3) is installed on the two circulation ropes (25) together. The storage box (3) is a mesh box with evenly opened holes on the surface. The storage boxes (3) are arranged at equal intervals on the circulation rope (25). The storage boxes (3) store Fe catalyst fillers loaded with activated carbon.

2. The treatment device for isooctyl thioglycolate wastewater according to claim 1, characterized in that: Rotating shafts (29) are installed on both sides of the storage box (3), and the rotating shafts (29) are rotatably connected to the circulating rope (25). The storage box (3) is a chamfered pyramid-shaped structure, and the top of the storage box (3) is open, and the center of gravity of the storage box (3) is located below the rotating shaft (29).

3. A treatment device for isooctyl thioglycolate wastewater according to claim 2, characterized in that: The storage box (3) is composed of a box body and a mounting ring (31). The mounting ring (31) is fixedly mounted between two rotating shafts (29). The maximum end size of the box body is larger than the inner diameter of the mounting ring (31). The box body is snap-fitted and mounted on the mounting ring (31).

4. A treatment device for isooctyl thioglycolate wastewater according to claim 3, characterized in that: The box body is composed of a bottom plate (32), a deflection plate (33), a fan-shaped piece (34) and a limiting rod (35). The bottom plate (32) is a C-shaped structure. Deflection grooves (36) are provided on both sides of the bottom plate (32). One end of the deflection plate (33) is rotatably mounted in the deflection groove (36). A fan-shaped piece (34) of symmetrical design is fixedly mounted on the deflection plate (33). The fan-shaped piece (34) is slidably connected to the side wall of the bottom plate (32). A limiting groove (37) is provided on the bottom plate (32). A limiting rod (35) is fixedly mounted on the fan-shaped piece (34). The limiting rod (35) extends into the limiting groove (37). The limiting rod (35) cooperates with the mounting ring (31) to adjust the opening area of ​​the top end of the box body.

5. A treatment device for isooctyl thioglycolate wastewater according to claim 4, characterized in that: It also includes a distribution component, which is located inside the catalytic tower (21) and is used to distribute the Fe catalyst filler loaded with activated carbon in the box; The distribution assembly comprises a lifting plate (4) and a friction plate (41); The inner walls of the adsorption tower (2) and the catalytic tower (21) are both smoothly arranged, a friction plate (41) of symmetrical design is fixedly mounted on the inner wall of the catalytic tower (21), and lifting plates (4) are fixedly mounted on both sides of the bottom plate (32), and the friction plate (41) is located on the movement path of the lifting plate (4).

6. A treatment device for isooctyl thioglycolate wastewater according to claim 5, characterized in that: The deflection plates (33) are each provided with a connecting slot (42) on one side away from the other, a connecting bead (44) is fixedly mounted on the mounting ring (31), the connecting bead (44) extends into the connecting slot (42), a through slot (43) is provided at the top end of the connecting slot (42), and the opening width of the connecting slot (42) is smaller than the diameter of the connecting bead (44).

7. The treatment device for isooctyl thioglycolate wastewater according to claim 6, characterized in that: The distribution component also includes a leak-proof plate (5), and the inner wall of the catalytic tower (21) is elastically mounted with a symmetrically designed leak-proof plate (5) through a spring, and the leak-proof plate (5) corresponds one-to-one to the friction plate (41).

8. The treatment device for isooctyl thioglycolate wastewater according to claim 7, characterized in that: The gap between the two leakage prevention plates (5) is distributed in a Y shape, and the gap between the two leakage prevention plates (5) is located on the movement path of the storage box (3).

9. The treatment device for isooctyl thioglycolate wastewater according to claim 8, characterized in that: A mounting plate (51) is fixedly mounted on the inner wall of the catalytic tower (21), and the anti-leakage plate (5) is slidably mounted on the mounting plate (51). The spacing between the mounting plates (51) is the same as the maximum width of the storage box (3).

10. A method for treating isooctyl thioglycolate wastewater, characterized in that: The treatment method uses the treatment device for isooctyl thioglycolate wastewater according to claim 9, and the method comprises the following steps: S1. Filling: opening the discharge port on the catalyst tower (21), and driving the driving wheel (27) to rotate through a preset control program, thereby filling the prefabricated granular activated carbon-loaded Fe catalyst filler into the storage box (3); S2, countercurrent adsorption: when the packing is loaded, the wastewater is sent into the adsorption tower (2) through the water supply pipe (1) at the top of the adsorption tower (2). During the process of the wastewater flowing downward, it contacts the packing in the storage box (3) layer by layer, thereby achieving adsorption and filtration of the wastewater; S3, catalytic preheating: the air compressor (22) continuously extracts outside air, heats it with the air heating device, and then sends it into the catalytic tower (21), thereby preheating the inside of the catalytic tower (21); S4: Oxidative decomposition: The circulation rope (25) rotates continuously, carrying the storage box (3) into the catalytic tower (21). After being distributed by the distribution component, the filler contacts the rising hot air, thereby achieving an in-situ catalytic oxidation reaction of the filler; S5: Evaporation and desalination: The waste water after adsorption and filtration and the waste gas discharged from the exhaust pipe (23) enter the evaporation device (11). After evaporation treatment in the evaporation device (11), the evaporation mother liquid is separated by the desalination filter (12).

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