Treatment method of heavy alkylbenzene sulfonate wastewater

Abstract

The invention discloses a heavy alkylbenzene sulfonate wastewater treatment method, and relates to the technical field of heavy alkylbenzene sulfonates.The heavy alkylbenzene sulfonate wastewater subjected to primary oxidation enters a secondary oxidation mechanism provided with a funnel plate assembly in batches, a fixing frame ascends through the assembly, and the heavy alkylbenzene sulfonate wastewater enters the secondary oxidation mechanism through the funnel plate assembly; meanwhile, the ascending sliding block can drive a first gear to ascend so as to be matched with a first rack meshed with the first gear to enable a fixed frame to rotate, heavy alkylbenzene sulfonate wastewater in the first oxidation cavity is stirred, the position of an iron block in the fixed frame can be changed, and meanwhile, the movement range of the iron block in the first oxidation cavity can be enlarged by rotating the fixed frame; more wastewater in the first oxidation cavity can make contact with a catalyst more quickly, the situation that the catalytic oxidation rate of the wastewater is low due to the fact that part of the wastewater is away from the catalyst is avoided, meanwhile, when the wastewater is discharged, the rising funnel-shaped plate drives the annular scraping piece to rise to scrape off flocculates attached to the inner wall of the oxidation box, and the effect of cleaning the interior of the oxidation box can be achieved.

Description

Technical Field

[0001] The invention relates to the technical field of heavy alkyl benzene sulfonate, in particular to a method for treating heavy alkyl benzene sulfonate wastewater. Background Art

[0002] Heavy alkylbenzene sulfonate (HABS) is an important surfactant for oil recovery in my country in recent years. HABS has excellent characteristics of reducing crude oil-water interfacial tension, and has the advantages of excellent performance and low price. Therefore, it occupies an extremely important position in enhanced oil recovery, and its annual usage is large. Heavy alkylbenzene sulfonate is a surfactant obtained by sulfonation and neutralization of the main raw material, dodecylbenzene distillation by-product - heavy alkylbenzene (HAB), 20% fuming sulfuric acid, sodium hydroxide, anhydrous ethanol and petroleum ether. While producing heavy alkylbenzene sulfonate, a large amount of heavy alkylbenzene sulfonate wastewater is also generated. This type of wastewater contains high concentrations of sulfites and sulfates, and is a high-salt wastewater; As a typical high-salinity organic wastewater that is difficult to biologically treat, heavy alkylbenzene sulfonate wastewater needs to be treated and discharged. For example, the patent website discloses a method for treating heavy alkylbenzene sulfonate wastewater (publication number: CN102583814B). The method for treating heavy alkylbenzene sulfonate wastewater is to first catalytically oxidize the heavy alkylbenzene sulfonate wastewater in a fixed bed wet catalytic oxidation tank, then perform secondary oxidation in a secondary oxidation tank, and finally discharge it into a sedimentation tank for precipitation to complete the treatment in the fixed bed wet catalytic oxidation tank. In fact, during the treatment process, a large amount of wastewater will enter the fixed bed wet catalytic oxidation tank, and the fixed bed of catalyst accumulation in the fixed bed wet catalytic oxidation tank is generally set at the bottom of the tank. Then, when the wastewater around the catalyst is in direct contact with the catalyst, it can be quickly catalytically oxidized. After completion, the wastewater in other locations is far away from the catalyst. oxidizing agent, which will lead to a slow catalytic oxidation rate of these wastewaters and slow down the entire oxidation time. Although the prior art can use a stirring structure to stir the wastewater so that the wastewater in the pool has a chance to contact the catalyst, this method has uncertainty. During the stirring process, the wastewater can only generate a vortex in the pool, and it is difficult to let the upper wastewater descend to contact the catalyst, and the effect of accelerating the catalytic oxidation is poor. At the same time, when the heavy alkyl benzene sulfonate wastewater is subjected to secondary oxidation after catalytic oxidation, flocculants will be generated during the secondary oxidation process after adding hydrogen peroxide, and some of the flocculants will adhere to the inner wall of the pool. Since the secondary oxidation takes a long time, the adhesion between the flocculants and the pool wall becomes stronger. Finally, the flocculants attached to the pool wall are difficult to enter the sedimentation tank with the water, resulting in the flocculants remaining in the oxidation tank and polluting the environment in the pool. Therefore, a person skilled in the art has proposed a method for treating heavy alkyl benzene sulfonate wastewater. Summary of the invention

[0003] In view of the shortcomings of the prior art, the present invention provides a method for treating heavy alkylbenzene sulfonate wastewater. The device uses the heavy alkylbenzene sulfonate wastewater after primary oxidation to enter a secondary oxidation mechanism equipped with a funnel plate assembly in batches for secondary oxidation. When the wastewater is fed into and discharged from the secondary oxidation mechanism, the funnel plate will also reciprocate up and down in the mechanism. The fixed bed assembly is allowed to reciprocate up and down in the primary oxidation mechanism through the structure to solve the above-mentioned problems.

[0004] To achieve the above objectives, the present invention is implemented through the following technical solutions: a method for treating heavy alkylbenzene sulfonate wastewater, wherein the heavy alkylbenzene sulfonate wastewater is subjected to a primary oxidation in a primary oxidation mechanism provided with a fixed bed assembly, and then the primary oxidized heavy alkylbenzene sulfonate wastewater is subjected to a secondary oxidation in batches provided with a funnel plate assembly for a secondary oxidation, and when the wastewater is fed into and discharged from the secondary oxidation mechanism, the funnel plate is reciprocated up and down in the mechanism, and the fixed bed assembly is reciprocated up and down in the primary oxidation mechanism through the structure; The method is implemented by using a treatment device for heavy alkyl benzene sulfonate wastewater, which comprises components such as a primary oxidation mechanism, a secondary oxidation mechanism and a feeding mechanism. The primary oxidation mechanism is used for performing primary oxidation on the heavy alkyl benzene sulfonate wastewater, the secondary oxidation mechanism is arranged below the primary oxidation mechanism for performing secondary oxidation on the heavy alkyl benzene sulfonate wastewater, and the feeding mechanism is arranged on the secondary oxidation mechanism for conveying a hydrogen peroxide solution into the secondary oxidation mechanism.

[0005] As a further technical solution of the present invention, the primary oxidation mechanism includes a box body, a first oxidation chamber is opened inside the box body, two mouth-shaped frames are correspondingly installed on the inner wall of the first oxidation chamber, a group of vertical sliding rods are installed between the inner walls of each of the mouth-shaped frames, each group of two sliding rods are slidably provided with a slider adapted to the mouth-shaped frame, a rotating rod is rotatably installed on the side of each slider, a fixed frame is installed between the two rotating rods, an iron block catalyst is arranged in the fixed frame, a first rack is installed on the inner wall of one of the mouth-shaped frames on one side of the sliding rod, and a first gear meshing with the first rack is installed on the surface of one of the rotating rods.

[0006] As a further technical solution of the present invention, a storage chamber is opened inside the box below the first oxidation chamber, a delivery pipe extending into the storage chamber is installed at the center of the inner bottom surface of the first oxidation chamber, and a first solenoid valve is arranged on the delivery pipe.

[0007] As a further technical solution of the present invention, a water supply pipe connected to the first oxidation chamber is installed on the upper surface of the box body, and a second solenoid valve is arranged on the water supply pipe. An air supply pipe connected to the first oxidation chamber is installed on one side of the water supply pipe on the upper surface of the box body, and a third solenoid valve is arranged on the air supply pipe.

[0008] As a further technical solution of the present invention, the secondary oxidation mechanism includes an oxidation box arranged directly below the box body, a funnel-shaped plate adapted to the oxidation box is slidably arranged in the oxidation box, an annular scraper adapted to the oxidation box is installed at the upper end of the funnel-shaped plate, two extension rods extending to the outside of the oxidation box are correspondingly installed on the lower surface of the funnel-shaped plate, a connecting plate is installed at the lower end of each of the extension rods, two pulleys are correspondingly installed on the edge of the upper surface of the box body, and a steel wire rope is installed on the upper surface of each of the connecting plates, the end of which is bypassed by the pulley on the same side and extends into the first oxidation chamber and is fixedly connected to the corresponding slider.

[0009] As a further technical solution of the present invention, an opening is provided in the center of the lower surface of the oxidation box, a connecting pipe connected to the oxidation box is installed in the center of the inner bottom surface of the storage cavity, a fourth solenoid valve is provided on the connecting pipe, and a fifth solenoid valve is provided at the lower port of the funnel-shaped plate.

[0010] As a further technical solution of the present invention, the feeding mechanism includes a mounting seat arranged between the box body and the oxidation box, an empty slot is opened in the mounting seat, a liquid inlet pipe extending to the outside of the mounting seat is installed on the inner top surface of the empty slot, a liquid delivery pipe connected to the oxidation box is arranged below the empty slot, a cavity is arranged on one side of the empty slot inside the mounting seat, an iron plate matching with the cavity is slidably arranged in the cavity, and a partition extending into the empty slot to block it is installed on the side of the iron plate.

[0011] As a further technical solution of the present invention, a magnet is magnetically connected to the other side of the iron plate, a limit plate is installed on one side of the magnet inside the cavity, the limit plate is provided with a through hole compatible with the magnet, a spring passing through the through hole is provided on one side of the magnet in the cavity, two outer plates are correspondingly installed on the side of the mounting seat, a winding rod is rotatably installed between the two outer plates, a pull rope with an end extending to the outside of the mounting seat and fixedly connected to the winding rod is installed at the center of the side of the magnet, one end of the winding rod passes through the outer plate and is installed with an overrunning clutch, a second gear is installed at the end of the overrunning clutch, a C-shaped plate is commonly installed on the sides of the two connecting plates, and a second rack meshing with the second gear is installed on the upper surface of the C-shaped plate.

[0012] Specifically include the following steps: S1, connecting the upper end of the air delivery pipe to the output end of the oxygen delivery device, connecting the liquid inlet pipe to the output end of the hydrogen peroxide solution delivery device, connecting the water delivery pipe to the heavy alkyl benzene sulfonate wastewater transport pipe, the first oxidation chamber is used for the first catalytic oxidation of the heavy alkyl benzene sulfonate wastewater, the storage chamber is used for storing the wastewater after the first oxidation, and the oxidation box is used for the second oxidation of the wastewater after the first oxidation; S2. When in use, open the second solenoid valve on the water supply pipe to allow the heavy alkyl benzene sulfonate wastewater to enter the first oxidation chamber until it is full, then close the second solenoid valve, open the third solenoid valve to allow oxygen to enter the first oxidation chamber through the air supply pipe, and the heavy alkyl benzene sulfonate wastewater and oxygen in the first oxidation chamber are subjected to the first catalytic oxidation under the catalysis of the iron block in the fixed frame; S3, during the catalytic oxidation process in the first oxidation chamber, the wastewater after the first oxidation in the storage chamber is opened on the fourth solenoid valve and enters the oxidation box through the connecting pipe. When the wastewater in the oxidation box continues to increase, the weight is greater than the weight of the iron block in the fixed frame, so that the wastewater presses down the funnel-shaped plate to make it descend, and the descending funnel-shaped plate pulls the two sliders up through the extension rod, the connecting plate and the two steel wire ropes, and the rising slider drives the fixed frame to rise, and at the same time, the rising slider also drives the first gear to rise, so as to cooperate with the first rack meshing with it to make the first gear rotate, and the rotating first gear drives the fixed frame to rotate, and the heavy alkylbenzene sulfonate wastewater in the first oxidation chamber is stirred until the funnel-shaped plate descends to the bottom of the oxidation box. At this time, the fixed frame stops moving, so that the position of the fixed frame can be changed. At the same time, the rotating fixed frame can be used to increase the range of activity of the iron block in the first oxidation chamber, so that more wastewater in the first oxidation chamber can contact the catalyst faster, and avoid the situation where some wastewater is far away from the catalyst and the catalytic oxidation rate of these wastewaters is slow, thereby accelerating the catalytic oxidation efficiency; S4. When the funnel-shaped plate descends, the second rack is driven to descend through the U-shaped plate. The descending second rack drives the second gear meshing with it to rotate. The rotating second gear drives the winding rod to rotate through the overrunning clutch. The rotating winding rod winds the pull rope to pull the magnet to move. The moving magnet compresses the spring and drives the iron plate to move so that the partition moves out of the empty slot and into the cavity, so that the empty slot is opened. The hydrogen peroxide solution enters the oxidation box through the liquid inlet pipe, the empty slot and the liquid delivery pipe, and performs secondary oxidation with the wastewater in the oxidation box. S5. At the same time, the second rack that is continuously descending continues to drive the winding rod to rotate. When the iron plate contacts the limit plate and stops moving, the magnet that continues to move is separated from the magnetic connection with the iron plate and continues to move until the funnel-shaped plate drops to the lowest point. At this time, the second rack is disengaged from the second gear, and then the spring rebounds to drive the magnet to restore its position, thereby driving the magnet to push the iron plate to move and push the partition into the empty slot to block it, and stop injecting liquid into the oxidation box; S6. When the secondary oxidation of the wastewater in the oxidation box is completed, the fifth solenoid valve is opened to allow the water to be discharged from the lower port of the funnel-shaped plate. When the weight of the water in the oxidation box is less than the weight of the iron block in the fixed frame, the iron block will cause the fixed frame to descend, and the descending fixed frame will drive the two sliders to descend, and the fixed frame will rotate again through the first rack and the first gear with it, so as to stir the wastewater in the first oxidation chamber. At the same time, the descending fixed frame will pull the funnel-shaped plate up through the two sliders and two steel wire ropes, and the rising funnel-shaped plate will drive the annular scraper thereon to rise and scrape off the flocculants adhering to the inner wall of the oxidation box. After being scraped off, the flocculants fall into the water of the oxidation box and are discharged with it. At the same time, the rising U-shaped plate will also drive the second rack to rise, driving the second gear to reverse. Due to the overrunning clutch, the reversed second gear will not drive the winding rod to reverse. S7. After the water in the oxidation box is drained, the fourth solenoid valve is opened to allow the wastewater in the storage chamber to enter the oxidation box again, and the rising operation is repeated to allow the fixed frame to rise and rotate in the first oxidation chamber again. The volume of the oxidation box cavity is smaller than the storage chamber, and the volume of the storage chamber is the same as that of the first oxidation chamber. Then, the wastewater in the storage chamber is divided into multiple batches and enters the oxidation box for secondary oxidation. Oxidation in multiple batches can allow the funnel-shaped plate in the oxidation box to move up and down multiple times, and then the fixed frame can move up and down and rotate multiple times during the first oxidation process of the wastewater in the first oxidation chamber, thereby ensuring the first catalytic oxidation efficiency in the first oxidation chamber. After the catalysis in the first oxidation chamber is completed, the first solenoid valve is opened to allow the wastewater in the box to enter the storage chamber through the delivery pipe, and then the above operation is repeated for continuous treatment. Beneficial Effects

[0013] The present invention provides a method for treating heavy alkylbenzene sulfonate wastewater. Compared with the prior art, the method has the following beneficial effects: 1. A method for treating heavy alkylbenzene sulfonate wastewater, wherein the heavy alkylbenzene sulfonate wastewater after primary oxidation is allowed to enter a secondary oxidation mechanism provided with a funnel plate assembly in batches, the wastewater presses down the funnel-shaped plate to make it descend, and the descending funnel-shaped plate pulls the fixed frame up through an extension rod, a connecting plate and two steel wire ropes, and at the same time, the ascending slider also drives the first gear to rise, thereby cooperating with the first rack meshing with it to rotate the fixed frame, stirring the heavy alkylbenzene sulfonate wastewater in the first oxidation chamber, and changing the position of the iron block in the fixed frame. At the same time, the rotating fixed frame can increase the range of movement of the iron block in the first oxidation chamber, so that more wastewater in the first oxidation chamber can contact the catalyst faster, and avoid some wastewater from being away from the catalyst. The agent causes the catalytic oxidation rate of these wastewaters to be slow, which speeds up the catalytic oxidation efficiency. At the same time, when discharging wastewater, the rising funnel-shaped plate drives the annular scraper on it to rise and scrape off the flocculants adhering to the inner wall of the oxidation box. After being scraped off, the flocculants fall into the water in the oxidation box and are discharged with it, which can clean the oxidation box. At the same time, the descending funnel plate can control the opening and closing of the feeding mechanism. When the funnel plate descends, the feeding mechanism can automatically inject hydrogen peroxide solution into the oxidation box, and each time the funnel plate descends to the lowest level, it will be closed, so that the feeding mechanism is opened for a fixed time each time, and then the solution injected each time is fixed, which will not cause excessive or insufficient addition of hydrogen peroxide, thereby ensuring the qualified rate of secondary oxidation. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 The schematic diagram is a structural diagram of a method for treating heavy alkylbenzene sulfonate wastewater; Figure 2 A side view of a method for treating heavy alkylbenzene sulfonate wastewater; Figure 3 for Figure 2 Enlarged view of part A; Figure 4 It is a cross-sectional view of a method for treating heavy alkylbenzene sulfonate wastewater; Figure 5 for Figure 4 Enlarged view of part B; Figure 6 A cross-sectional view of a second state of a method for treating heavy alkylbenzene sulfonate wastewater; Figure 7 A longitudinal section diagram of a method for treating heavy alkylbenzene sulfonate wastewater; Figure 8 for Figure 7 Enlarged view of part C in the middle; Fig. 9 This is a schematic diagram of the structure in the first oxidation chamber of a method for treating heavy alkylbenzene sulfonate wastewater; Fig.10 for Fig. 9 Enlarged view of part D in the middle.

[0015] In the figure: 1, box body; 2, mouth-shaped frame; 3, slide bar; 4, slider; 5, rotating rod; 6, fixed frame; 7, first oxidation chamber; 8, first rack; 9, first gear; 10, pulley; 11, wire rope; 12, storage chamber; 13, delivery pipe; 14, first solenoid valve; 15, water delivery pipe; 16, second solenoid valve; 17, air delivery pipe; 18, third solenoid valve; 19, oxidation box; 20, funnel-shaped plate; 21, extension rod; 22, connection Plate; 23, connecting pipe; 24, fourth solenoid valve; 25, opening; 26, mounting seat; 27, cavity; 28, empty slot; 29, iron plate; 30, partition; 31, magnet; 32, spring; 33, limit plate; 34, through hole; 35, outer plate; 36, winding rod; 37, pull rope; 38, second gear; 39, U-shaped plate; 40, second rack; 41, liquid inlet pipe; 42, liquid delivery pipe; 43, annular scraper; 44, fifth solenoid valve. DETAILED DESCRIPTION

[0016] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0017] Figure 1 The schematic diagram is a structural diagram of a method for treating heavy alkylbenzene sulfonate wastewater; Figure 2 A side view of a method for treating heavy alkylbenzene sulfonate wastewater; Figure 3 for Figure 2 Enlarged view of part A; Figure 4 It is a cross-sectional view of a method for treating heavy alkylbenzene sulfonate wastewater; Figure 5 for Figure 4 Enlarged view of part B; Figure 6 A cross-sectional view of a second state of a method for treating heavy alkylbenzene sulfonate wastewater; Figure 7 A longitudinal section diagram of a method for treating heavy alkylbenzene sulfonate wastewater; Figure 8 for Figure 7 Enlarged view of part C in the middle; Fig. 9 This is a schematic diagram of the structure in the first oxidation chamber of a method for treating heavy alkylbenzene sulfonate wastewater; Fig.10 for Fig. 9 Enlarged view of part D in the middle; See also Figure 1-10 The present invention provides a technical solution for treating heavy alkylbenzene sulfonate wastewater: a method for treating heavy alkylbenzene sulfonate wastewater, wherein the heavy alkylbenzene sulfonate wastewater is subjected to a primary oxidation in a primary oxidation mechanism provided with a fixed bed assembly, and then the primary oxidized heavy alkylbenzene sulfonate wastewater is subjected to a secondary oxidation in batches provided with a funnel plate assembly for secondary oxidation, and the funnel plate is also caused to reciprocate up and down in the mechanism during the process of feeding and discharging the wastewater in the secondary oxidation mechanism, and the fixed bed assembly is caused to reciprocate up and down in the primary oxidation mechanism through the structure; The method is implemented by using a heavy alkylbenzene sulfonate wastewater treatment device, which includes a primary oxidation mechanism, a secondary oxidation mechanism, a feeding mechanism and other components; like Figure 1-10 As shown, the primary oxidation mechanism includes a box body 1, a mouth-shaped frame 2, a sliding rod 3, a slider 4, a rotating rod 5, a fixed frame 6, a first oxidation chamber 7, a first rack 8, a first gear 9, a storage chamber 12, a delivery pipe 13, a first solenoid valve 14, a water delivery pipe 15, a second solenoid valve 16, an air delivery pipe 17, and a third solenoid valve 18; The first oxidation chamber 7 is opened in the interior of the housing 1, the two mouth-shaped frames 2 are correspondingly installed in the interior of the first oxidation chamber 7, each group of two slide bars 3 is installed between the inner walls of the corresponding mouth-shaped frames 2, each slider 4 is slidably arranged on the corresponding group of slide bars 3, the two rotating rods 5 are rotatably installed on the sides of the corresponding two sliders 4, the fixed frame 6 is installed between the two rotating rods 5, an iron block is arranged in the frame of the fixed frame 6, the first rack 8 is installed on the inner wall of one of the mouth-shaped frames 2, the first gear 9 is installed on the side of one of the rotating rods 5 and meshes with the first rack 8, the storage chamber 12 is opened in the interior of the housing 1 and is directly below the first oxidation chamber 7, the delivery pipe 13 is installed on the inner bottom surface of the first oxidation chamber 7 and extends into the storage chamber 12, the delivery pipe 13 is arranged on the storage chamber 12, the water supply pipe 15 is installed on the upper surface of the housing 1 and is connected with the first oxidation chamber 7, the second solenoid valve 16 is arranged on the water supply pipe 15, the air supply pipe 17 is installed on the upper surface of the housing 1 and is connected with the first oxidation chamber 7, and the third solenoid valve 18 is arranged on the air supply pipe 17; like Figure 1-10 As shown, the secondary oxidation mechanism includes a pulley 10, a steel wire rope 11, an oxidation box 19, a funnel-shaped plate 20, an extension rod 21, a connecting plate 22, a connecting pipe 23, a fourth solenoid valve 24, an opening 25, an annular scraper 43, and a fifth solenoid valve 44; The oxidation box 19 is installed at the center of the lower surface of the box body 1, the funnel-shaped plate 20 is slidably arranged inside the oxidation box 19 and adapted thereto, two extension rods 21 are installed on the lower surface of the funnel-shaped plate 20, two connecting plates 22 are installed at the lower ends of the two extension rods 21 extending to the outside of the oxidation box 19, two pulleys 10 are correspondingly installed on the upper surface of the box body 1, each wire rope 11 is installed on the upper surface of the corresponding connecting plate 22 and the end thereof bypasses the pulley 10 on the same side and extends into the first oxidation chamber 7 and is fixedly connected to the corresponding slider 4, the connecting pipe 23 is installed at the center of the inner bottom surface of the storage chamber 12 and the lower end thereof is connected to the oxidation box 19, the fourth solenoid valve 24 is arranged on the connecting pipe 23, the opening 25 is opened at the center of the lower surface of the oxidation box 19, the annular scraper 43 is installed at the upper port of the funnel-shaped plate 20 and adapted thereto, and the fifth solenoid valve 44 is arranged at the lower port of the funnel-shaped plate 20; like Figure 1-10 As shown, it includes a mounting seat 26, a cavity 27, an empty slot 28, an iron plate 29, a partition 30, a magnet 31, a spring 32, a limit plate 33, a through hole 34, an outer plate 35, a winding rod 36, a pull rope 37, a second gear 38, a U-shaped plate 39, a second rack 40, a liquid inlet pipe 41, and a liquid delivery pipe 42; The mounting seat 26 is mounted on the upper surface of the oxidation box 19, the cavity 27 is opened inside the mounting seat 26, the slot 28 is opened inside the mounting seat 26 and is located on one side of the cavity 27, the liquid inlet pipe 41 is installed on the inner top surface of the slot 28 and extends to the outside of the mounting seat 26, the liquid delivery pipe 42 is installed on the inner bottom surface of the slot 28 and is connected to the oxidation box 19, the iron plate 29 is slidably arranged in the cavity 27, the partition 30 is installed on the side of the iron plate 29 and extends into the slot 28 to block it, the magnet 31 is arranged on the other side of the iron plate 29 and is magnetically connected to it, the limit plate 33 is installed in the cavity 27, and the through hole 34 is opened at the limit plate 33. The side of the plate 33 is adapted to the magnet 31, the spring 32 is arranged on the side of the magnet 31 and passes through the through hole 34, the two outer plates 35 are correspondingly installed on the side of the mounting seat 26, the winding rod 36 is rotatably installed between the two outer plates 35, the pull rope 37 is installed at the center of the side of the magnet 31 and passes through the through hole 34 to extend to the outside of the mounting seat 26 and is fixedly connected to the winding rod 36, one end of the winding rod 36 passes through the outer plate 35 and is installed with an overrunning clutch, the second gear 38 is installed at the end of the overrunning clutch, the C-shaped plate 39 is installed on the side of the two connecting plates 22, and the second rack 40 is installed on the upper surface of the C-shaped plate 39 and meshes with the second gear 38; Specifically include the following steps: S1, connecting the upper end of the air delivery pipe 17 to the output end of the oxygen delivery device, connecting the liquid inlet pipe 41 to the output end of the hydrogen peroxide solution delivery device, connecting the water delivery pipe 15 to the heavy alkyl benzene sulfonate wastewater transport pipe, the first oxidation chamber 7 is used for the first catalytic oxidation of the heavy alkyl benzene sulfonate wastewater, the storage chamber 12 is used to store the wastewater after the first oxidation, and the oxidation box 19 is used for the second oxidation of the wastewater after the first oxidation; S2, when in use, open the second solenoid valve 16 on the water supply pipe 15, let the heavy alkyl benzene sulfonate wastewater enter the first oxidation chamber 7 until it is full, then close the second solenoid valve 16, open the third solenoid valve 18 to let oxygen enter the first oxidation chamber 7 through the air supply pipe 17, and the heavy alkyl benzene sulfonate wastewater and oxygen in the first oxidation chamber 7 are subjected to the first catalytic oxidation under the catalysis of the iron block in the fixed frame 6; S3, during the catalytic oxidation process in the first oxidation chamber 7, the wastewater after the primary oxidation in the storage chamber 12 is opened on the fourth solenoid valve 24 and enters the oxidation box 19 through the connecting pipe 23. When the wastewater in the oxidation box 19 increases continuously, the weight is greater than the weight of the iron block in the fixed frame 6, so that the wastewater presses down the funnel-shaped plate 20 to make it descend. The descending funnel-shaped plate 20 pulls the two sliders 4 up through the extension rod 21, the connecting plate 22 and the two steel wire ropes 11. The rising slider 4 drives the fixed frame 6 to rise, and at the same time, the rising slider 4 also drives the first gear 9 to rise so as to mesh with it. The first rack 8 makes the first gear 9 rotate, and the rotating first gear 9 drives the fixed frame 6 to rotate, so as to stir the heavy alkylbenzene sulfonate wastewater in the first oxidation chamber 7, until the funnel-shaped plate 20 drops to the bottom of the oxidation box 19. At this time, the fixed frame 6 stops moving, so that the position of the fixed frame 6 can be changed. At the same time, the rotating fixed frame 6 can increase the range of movement of the iron block in the first oxidation chamber 7, so that more wastewater in the first oxidation chamber 7 can contact the catalyst faster, avoiding the situation where some wastewater is far away from the catalyst and the catalytic oxidation rate of these wastewaters is slow, thereby accelerating the catalytic oxidation efficiency; S4. When the funnel-shaped plate 20 descends, the second rack 40 is also driven to descend through the U-shaped plate 39. The descending second rack 40 drives the second gear 38 meshing with it to rotate. The rotating second gear 38 drives the winding rod 36 to rotate through the overrunning clutch. The rotating winding rod 36 winds the pull rope 37 to pull the magnet 31 to move. The moving magnet 31 compresses the spring 32 and drives the iron plate 29 to move so that the partition 30 moves out of the empty slot 28 and into the cavity 27, so that the empty slot 28 is opened, and the hydrogen peroxide solution enters the oxidation box 19 through the liquid inlet pipe 41, the empty slot 28 and the liquid delivery pipe 42, and performs secondary oxidation with the wastewater in the oxidation box 19; S5, the second rack 40 that is continuously descending at the same time continues to drive the winding rod 36 to rotate. When the iron plate 29 contacts the limit plate 33 and stops moving, the magnet 31 that continues to move is separated from the magnetic connection with the iron plate 29 and continues to move until the funnel-shaped plate 20 descends to the lowest point. At this time, the second rack 40 is released from the meshing with the second gear 38, and then the spring 32 rebounds and drives the magnet 31 to restore its position, thereby driving the magnet 31 to push the iron plate 29 to move and push the partition 30 into the empty slot 28 to block it, and stop injecting liquid into the oxidation box 19; S6. When the secondary oxidation of the wastewater in the oxidation box 19 is completed, the fifth solenoid valve 44 is opened to allow the water to be discharged from the lower port of the funnel-shaped plate 20. When the weight of the water in the oxidation box 19 is less than the weight of the iron block in the fixed frame 6, the iron block will cause the fixed frame 6 to descend. The descending fixed frame 6 drives the two sliders 4 to descend, and the first rack 8 and the first gear 9 thereof will cause the fixed frame 6 to rotate again to stir the wastewater in the first oxidation chamber 7. At the same time, the descending fixed frame 6 pulls the funnel-shaped plate 20 up through the two sliders 4 and the two steel wires 11. The ascending funnel-shaped plate 20 drives the annular scraper 43 thereon to rise and scrape off the flocculants adhered to the inner wall of the oxidation box 19. After being scraped off, the flocculants fall into the water of the oxidation box 19 and are discharged with it. At the same time, the ascending U-shaped plate 39 will also drive the second rack 40 to rise, driving the second gear 38 to reverse. Due to the overrunning clutch, the reversed second gear 38 will not drive the winding rod 36 to reverse. S7. After the water in the oxidation box 19 is drained, the fourth solenoid valve 24 is opened to allow the wastewater in the storage chamber 12 to enter the oxidation box 19 again, and the rising operation is repeated to allow the fixed frame 6 to rise and rotate in the first oxidation chamber 7 again. The inner volume of the oxidation box 19 is smaller than the storage chamber 12, and the volume of the storage chamber 12 is the same as the volume of the first oxidation chamber 7. Then, the wastewater in the storage chamber 12 is divided into multiple batches and enters the oxidation box 19 for secondary oxidation. Oxidation in multiple batches can allow the funnel-shaped plate 20 in the oxidation box 19 to move up and down multiple times, and then the fixed frame 6 can move up and down and rotate multiple times during the first oxidation process of the wastewater in the first oxidation chamber 7, thereby ensuring the first catalytic oxidation efficiency in the first oxidation chamber 7. After the catalysis in the first oxidation chamber 7 is completed, the first solenoid valve 14 is opened to allow the wastewater in the box 1 to enter the storage chamber 12 through the delivery pipe 13, and then the above operation is repeated for continuous treatment.

Claims

1. A method for treating heavy alkylbenzene sulfonate wastewater, characterized in that: The heavy alkylbenzene sulfonate wastewater is oxidized once in a primary oxidation mechanism provided with a fixed bed assembly, and then the heavy alkylbenzene sulfonate wastewater after the primary oxidation is allowed to enter a secondary oxidation mechanism provided with a funnel plate assembly in batches for secondary oxidation. When the wastewater is fed into and discharged from the secondary oxidation mechanism, the funnel plate is also reciprocated up and down in the mechanism, and the fixed bed assembly is reciprocated up and down in the primary oxidation mechanism through the structure; The method is implemented by using a treatment device for heavy alkyl benzene sulfonate wastewater, which comprises components such as a primary oxidation mechanism, a secondary oxidation mechanism and a feeding mechanism. The primary oxidation mechanism is used for performing primary oxidation on the heavy alkyl benzene sulfonate wastewater, the secondary oxidation mechanism is arranged below the primary oxidation mechanism for performing secondary oxidation on the heavy alkyl benzene sulfonate wastewater, and the feeding mechanism is arranged on the secondary oxidation mechanism for conveying a hydrogen peroxide solution into the secondary oxidation mechanism.

2. A treatment device for heavy alkylbenzene sulfonate wastewater according to claim 1, characterized in that: The primary oxidation mechanism comprises a housing (1), wherein a first oxidation chamber (7) is provided inside the housing (1), wherein two mouth-shaped frames (2) are correspondingly mounted on the inner wall of the first oxidation chamber (7), wherein a group of vertical slide bars (3) are mounted between the inner walls of each of the mouth-shaped frames (2), wherein a slider (4) matching the mouth-shaped frame (2) is slidably mounted on each group of two slide bars (3), wherein a rotating rod (5) is rotatably mounted on the side of each of the sliders (4), wherein a fixed frame (6) is mounted between the two rotating rods (5), wherein an iron block catalyst is mounted in the fixed frame (6), wherein a first rack (8) is mounted on the inner wall of one of the mouth-shaped frames (2) on one side of the slide bar (3), wherein a first gear (9) meshing with the first rack (8) is mounted on the surface of one of the rotating rods (5).

3. A treatment device for heavy alkylbenzene sulfonate wastewater according to claim 2, characterized in that: A storage chamber (12) is provided inside the box body (1) below the first oxidation chamber (7); a delivery pipe (13) extending into the storage chamber (12) is installed at the center of the inner bottom surface of the first oxidation chamber (7); and a first solenoid valve (14) is provided on the delivery pipe (13).

4. A treatment device for heavy alkylbenzene sulfonate wastewater according to claim 3, characterized in that: A water supply pipe (15) communicating with the first oxidation chamber (7) is installed on the upper surface of the box body (1), and a second electromagnetic valve (16) is arranged on the water supply pipe (15). An air supply pipe (17) communicating with the first oxidation chamber (7) is installed on the upper surface of the box body (1) on one side of the water supply pipe (15), and a third electromagnetic valve (18) is arranged on the air supply pipe (17).

5. A treatment device for heavy alkylbenzene sulfonate wastewater according to claim 4, characterized in that: The secondary oxidation mechanism comprises an oxidation box (19) arranged directly below the box body (1), a funnel-shaped plate (20) adapted thereto being slidably arranged in the oxidation box (19), an annular scraper (43) adapted thereto being installed at the upper end of the funnel-shaped plate (20), two extension rods (21) extending to the outside of the oxidation box (19) being correspondingly installed on the lower surface of the funnel-shaped plate (20), a connecting plate (22) being installed at the lower end of each of the extension rods (21), two pulleys (10) being correspondingly installed on the upper surface edge of the box body (1), and a steel wire rope (11) being installed on the upper surface of each of the connecting plates (22) and having an end that bypasses the pulley (10) on the same side and extends into the first oxidation chamber (7) and is fixedly connected to the corresponding slider (4).

6. A heavy alkylbenzene sulfonate wastewater treatment device according to claim 5, characterized in that: An opening (25) is provided at the center of the lower surface of the oxidation box (19), a connecting pipe (23) connected to the oxidation box (19) is installed at the center of the inner bottom surface of the storage chamber (12), a fourth solenoid valve (24) is provided on the connecting pipe (23), and a fifth solenoid valve (44) is provided at the lower end of the funnel-shaped plate (20).

7. A heavy alkylbenzene sulfonate wastewater treatment device according to claim 6, characterized in that: The feeding mechanism comprises a mounting seat (26) arranged between the box body (1) and the oxidation box (19), a hollow groove (28) being provided in the mounting seat (26), a liquid inlet pipe (41) extending to the outside of the mounting seat (26) being installed on the inner top surface of the hollow groove (28), a liquid delivery pipe (42) communicating with the oxidation box (19) being installed below the hollow groove (28), a hollow cavity (27) being provided inside the mounting seat (26) on one side of the hollow groove (28), an iron plate (29) matching with the hollow cavity (27) being slidably provided in the hollow cavity (27), and a partition plate (30) extending into the hollow groove (28) for blocking the hollow groove is installed on the side of the iron plate (29).

8. A heavy alkylbenzene sulfonate wastewater treatment device according to claim 7, characterized in that: The other side of the iron plate (29) is magnetically connected to a magnet (31); a limit plate (33) is installed inside the cavity (27) on one side of the magnet (31); the limit plate (33) is provided with a through hole (34) adapted to the magnet (31); a spring (32) passing through the through hole (34) is provided inside the cavity (27) on one side of the magnet (31); two outer plates (35) are correspondingly installed on the side of the mounting seat (26); a winding spring (32) is rotatably installed between the two outer plates (35). A rod (36) is installed at the center of the side of the magnet (31) with a pull rope (37) whose end extends to the outside of the mounting seat (26) and is fixedly connected to the winding rod (36); one end of the winding rod (36) passes through the outer plate (35) and is installed with an overrunning clutch; the end of the overrunning clutch is installed with a second gear (38); a C-shaped plate (39) is installed on the side of the two connecting plates (22); and a second rack (40) meshing with the second gear (38) is installed on the upper surface of the C-shaped plate (39).

9. A method for treating heavy alkylbenzene sulfonate wastewater according to claim 8, using the device according to claim 8, characterized in that: Specifically include the following steps: S1, connecting the upper end of the air supply pipe (17) to the output end of the oxygen delivery device, connecting the liquid inlet pipe (41) to the output end of the hydrogen peroxide solution delivery device, connecting the water supply pipe (15) to the heavy alkyl benzene sulfonate wastewater transport pipe, the first oxidation chamber (7) is used for the first catalytic oxidation of the heavy alkyl benzene sulfonate wastewater, the storage chamber (12) is used for storing the wastewater after the first oxidation, and the oxidation box (19) is used for the second oxidation of the wastewater after the first oxidation; S2. When in use, the second solenoid valve (16) on the water supply pipe (15) is opened to allow the heavy alkylbenzene sulfonate wastewater to enter the first oxidation chamber (7) until it is full, then the second solenoid valve (16) is closed, and the third solenoid valve (18) is opened to allow oxygen to enter the first oxidation chamber (7) through the air supply pipe (17), and the heavy alkylbenzene sulfonate wastewater and oxygen in the first oxidation chamber (7) are subjected to a first catalytic oxidation under the catalysis of the iron block in the fixed frame (6); S3. During the catalytic oxidation process in the first oxidation chamber (7), the fourth solenoid valve (24) is opened, and the wastewater after the primary oxidation in the upper storage chamber (12) enters the oxidation box (19) through the connecting pipe (23). When the wastewater in the oxidation box (19) increases continuously, the weight is greater than the weight of the iron block in the fixed frame (6), so that the wastewater presses down the funnel-shaped plate (20) to make it descend. The descending funnel-shaped plate (20) pulls the two sliders (4) upward through the extension rod (21), the connecting plate (22) and the two steel wire ropes (11). The ascending slider (4) drives the fixed frame (6) upward. At the same time, the ascending slider (4) also drives the first gear (9) upward, thereby aligning the gears. The first rack (8) meshing with the first rack (8) allows the first gear (9) to rotate, and the rotating first gear (9) drives the fixed frame (6) to rotate, so as to stir the heavy alkylbenzene sulfonate wastewater in the first oxidation chamber (7), until the funnel-shaped plate (20) descends to the bottom of the oxidation box (19), at which time the fixed frame (6) stops moving, so that the position of the fixed frame (6) can be changed. At the same time, the rotating fixed frame (6) can increase the range of movement of the iron block in the first oxidation chamber (7), so that more wastewater in the first oxidation chamber (7) can contact the catalyst faster, thereby avoiding the situation where some wastewater is far away from the catalyst and the catalytic oxidation rate of these wastewater is slow, thereby accelerating the catalytic oxidation efficiency; S4. When the funnel-shaped plate (20) descends, the second rack (40) is driven to descend through the U-shaped plate (39). The descending second rack (40) drives the second gear (38) meshing with the second gear (38) to rotate. The rotating second gear (38) drives the winding rod (36) to rotate through the overrunning clutch. The rotating winding rod (36) winds around the pull rope (37) to pull the magnet (31) to move. The moving magnet (31) compresses the spring (32) and drives the iron plate (29) to move, so that the partition (30) moves out of the empty slot (28) and enters the cavity (27), so that the empty slot (28) is opened. The hydrogen peroxide solution enters the oxidation box (19) through the liquid inlet pipe (41), the empty slot (28) and the liquid delivery pipe (42), and is secondary oxidized with the wastewater in the oxidation box (19). S5, the second rack (40) which is continuously descending continues to drive the winding rod (36) to rotate, and when the iron plate (29) contacts the limit plate (33) and stops moving, the magnet (31) which continues to move is separated from the magnetic connection with the iron plate (29) and continues to move until the funnel-shaped plate (20) descends to the lowest point, at which time the second rack (40) is released from the meshing with the second gear (38), and then the spring (32) rebounds and drives the magnet (31) to restore its position, thereby driving the magnet (31) to push the iron plate (29) to move and push the partition (30) into the empty slot (28) to block it, and stop injecting liquid into the oxidation box (19); S6. When the secondary oxidation of the wastewater in the oxidation box (19) is completed, the fifth solenoid valve (44) is opened to allow the water to be discharged from the lower port of the funnel-shaped plate (20). When the weight of the water in the oxidation box (19) is less than the weight of the iron block in the fixed frame (6), the iron block will cause the fixed frame (6) to descend. The descending fixed frame (6) drives the two sliders (4) to descend. The first rack (8) and the first gear (9) connected thereto will cause the fixed frame (6) to rotate again, stirring the wastewater in the first oxidation chamber (7). At the same time, the descending fixed frame (6) is driven by the two sliders (4). The slider (4) and the two steel wire ropes (11) pull the funnel-shaped plate (20) upward, and the rising funnel-shaped plate (20) drives the annular scraper (43) thereon to rise and scrape off the floccules adhering to the inner wall of the oxidation box (19). After being scraped off, the floccules fall into the water in the oxidation box (19) and are discharged therewith. At the same time, the rising U-shaped plate (39) also drives the second rack (40) upward, driving the second gear (38) to reverse. Due to the overrunning clutch, the reversed second gear (38) will not drive the winding rod (36) to reverse. S7. After the water in the oxidation box (19) is discharged, the fourth solenoid valve (24) is opened to allow the wastewater in the storage chamber (12) to enter the oxidation box (19) again, and the rising operation is repeated to allow the fixed frame (6) to rise and rotate in the first oxidation chamber (7) again. The volume of the inner chamber of the oxidation box (19) is smaller than that of the storage chamber (12), and the volume of the storage chamber (12) is the same as that of the first oxidation chamber (7). Then, the wastewater in the storage chamber (12) is divided into multiple batches and enters the oxidation box (19) for secondary oxidation. The multiple batches of oxidation allow the funnel-shaped plate (20) in the oxidation box (19) to move up and down multiple times, and then the fixed frame (6) can move up and down and rotate multiple times during the first oxidation process of the wastewater in the first oxidation chamber (7), thereby ensuring the first catalytic oxidation efficiency in the first oxidation chamber (7). After the catalysis in the first oxidation chamber (7) is completed, the first solenoid valve (14) is opened to allow the wastewater in the box body (1) to enter the storage chamber (12) through the delivery pipe (13), and then the above operation is repeated for continuous treatment.

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