Regeneration desorption system and desorption method for fluorine-containing waste activated carbon

Abstract

The invention discloses a regeneration desorption system and desorption method for fluorine-containing waste activated carbon, the regeneration desorption system comprises a support table, the support table is rotatably connected with a fixed disc, the support table is connected with a bottom plate through an electric telescopic rod, the bottom plate is rotatably connected with a reaction furnace body, the reaction furnace body is internally and fixedly connected with a plurality of partition plates, and the partition plates are fixedly connected with the support table. A storage assembly is arranged between every two adjacent partition plates. The limiting assembly is arranged on the fixed disc; and the driving assembly is arranged on the bottom plate. The fluorine-containing waste activated carbon powder treatment device can crush agglomerates generated during high-temperature reaction of fluorine-containing waste activated carbon powder and salt or alkali substances, and the material storage assembly can raise the fluorine-containing waste activated carbon powder located at the bottom along with movement of the reaction furnace body, so that a mixture can be fully and uniformly heated, and the energy consumption is reduced. And after the storage assembly moves to crush the cakes, the cakes can be cleaned by the scraping unit, and the mixture is prevented from being attached to the storage assembly or the partition plate.

Description

Technical Field

[0001] The invention relates to the technical field of waste activated carbon regeneration, and in particular to a regeneration and desorption system and a desorption method for fluorine-containing waste activated carbon. Background Art

[0002] Fluorine-containing waste activated carbon mainly comes from the process of using activated carbon to treat fluorine-containing wastewater. In this process, activated carbon effectively removes fluoride ions in water through physical adsorption and chemical adsorption, but over time, the activated carbon will gradually become saturated and can no longer effectively adsorb fluoride ions, thus forming fluorine-containing waste activated carbon. Although fluorine-containing waste activated carbon becomes waste after adsorption saturation, its recycling is of great significance. Through proper regeneration treatment, its adsorption capacity can be restored, its service life can be extended, and resource waste can be reduced. Regeneration methods include thermal regeneration, chemical regeneration, and biological regeneration, which can effectively remove pollutants adsorbed on activated carbon and restore its adsorption performance.

[0003] For example, the Chinese invention patent with application number: 202410313711.8, entitled Waste Activated Carbon Regeneration Equipment, discloses a waste activated carbon regeneration equipment, including a crushing device, an activation furnace, and a lifting assembly; the crushing device is used to crush the block waste activated carbon, and a second discharge port is provided at the lower end of the crushing device; a first feed port and a first discharge port are respectively provided on the opposite side walls of the activation furnace, the first feed port is connected to the second discharge port, the activation furnace is used to receive and heat the crushed waste activated carbon, and an exhaust port is provided on the upper wall of the activation furnace near the first feed port; the lifting assembly is provided in the activation furnace, and is used to lift the waste activated carbon in the activation furnace. The crushing device provided in the present invention can crush the block waste activated carbon, which is beneficial to the uniform heating of the waste activated carbon particles in the subsequent activation and regeneration process; the lifting assembly can keep the waste activated carbon in the activation furnace in a moving state during the activation of the waste activated carbon, which is beneficial to the uniform heating of the waste activated carbon in the activation furnace and ensures the activation effectiveness of the waste activated carbon during the activation process.

[0004] The shortcomings of the prior art are that when the waste activated carbon is regenerated, a lifting device is required to lift the rolling waste activated carbon inside it so that the waste activated carbon can be fully heated. For example, in the above-mentioned device, the upper layer of waste activated carbon is lifted by using a lifting component, but the stacking of activated carbon powder at the bottom causes uneven heating, and the fluorine-containing waste activated carbon needs to add salt or alkali for high-temperature reaction. Agglomeration may occur during the reaction, thereby affecting the reaction between substances, and there are certain shortcomings. Summary of the invention

[0005] The object of the present invention is to provide a regeneration and desorption system and a desorption method for fluorine-containing waste activated carbon to solve the above-mentioned deficiencies in the prior art.

[0006] In order to achieve the above-mentioned purpose, the present invention provides the following technical solutions: a regeneration and desorption system for fluorine-containing waste activated carbon, comprising a support table, a fixed disk is rotatably connected to the support table, a bottom plate is connected to the support table through an electric telescopic rod, a reaction furnace body is rotatably connected to the bottom plate, a plurality of partitions are fixedly connected in the reaction furnace body, and a storage assembly is arranged between two adjacent partitions; a limiting assembly is also arranged on the fixed disk; a driving assembly is also arranged on the bottom plate; when the reaction furnace body rotates, the fluorine-containing waste activated carbon at the bottom layer is driven to move and enter the limiting assembly for screening and lifting, the storage assembly moves under the action of the driving assembly to crush the agglomerated fluorine-containing waste activated carbon, and then the surface of the storage assembly is cleaned by the scraping unit.

[0007] As a further description of the above technical solution: The material storage assembly includes a connecting rod slidably connected to the reaction furnace body; a material receiving plate is fixedly connected to the connecting rod, and side plates are slidably connected to the inside of both sides of the material receiving plate. The two side plates are connected to the inside of the material receiving plate through a spring, and an elastic rope is arranged between each material receiving plate and the reaction furnace body.

[0008] As a further description of the above technical solution: The limiting component comprises an arc-shaped plate fixedly connected to a fixed disk, a plurality of filtering holes are formed on the arc-shaped plate, and a plurality of partitions are in contact with the arc-shaped plate during their movement.

[0009] As a further description of the above technical solution: The driving assembly comprises an auxiliary ring fixedly connected to the bottom plate, a track groove is provided in the auxiliary ring, and a plurality of connecting rods are slidably connected in the track groove.

[0010] As a further description of the above technical solution: The scraper unit comprises a scraper plate slidably connected in the arc plate, and the scraper plate is connected to the inner wall of the arc plate through a second spring.

[0011] As a further description of the above technical solution: It also includes a crushing cylinder, which is connected to the reaction furnace body through a conveying mechanism; the conveying mechanism includes a conveying auger connected to the discharge end of the crushing cylinder, the discharge pipe of the conveying auger is rotatably connected to a guide pipe, the guide pipe is connected to a semicircular frame 1, the semicircular frame 1 is rotatably connected to a semicircular frame 2, and the semicircular frame 2 is connected to the reaction furnace body through the discharge pipe.

[0012] As a further description of the above technical solution: An auxiliary component is arranged in the semicircular frame 1, and the auxiliary component comprises two limiting plates fixedly connected in the semicircular frame 1.

[0013] As a further description of the above technical solution: The discharge port of the reaction furnace body is connected with a waste water pipe, the waste water pipe is connected with a secondary treatment tank, and a kinetic energy unit is arranged on the secondary treatment tank.

[0014] As a further description of the above technical solution: The kinetic energy unit comprises an active rotating rod rotatably connected to the secondary processing tank, a connecting frame is fixedly connected to the active rotating rod, and the connecting frame is fixedly connected to a semicircular frame.

[0015] A desorption method for fluorine-containing waste activated carbon, the use method of which is the regeneration and desorption system for fluorine-containing waste activated carbon as described above, the activated carbon desorption and regeneration method comprising the following steps: S1: Pour the fluorine-containing waste activated carbon into the crushing drum for crushing, and then convey the crushed fluorine-containing waste activated carbon powder to the reaction furnace body through the conveying mechanism, add salt or alkali substances, and introduce inert gas to perform high-temperature melting reaction regeneration; S2: After the reaction is completed, the mixture is cooled to obtain a mixture of alkali or salt and activated carbon. Water is added to the reaction furnace to dissolve the mixture and filter it to obtain activated carbon and salt solution. The salt solution enters a secondary treatment tank for further treatment; S3: Restart the reaction furnace to dry the remaining activated carbon to obtain regenerated activated carbon.

[0016] In the above technical scheme, the regeneration and desorption system and desorption method for fluorine-containing waste activated carbon provided by the present invention have the following beneficial effects: The present invention can break up the lumps generated when the fluorine-containing waste activated carbon powder reacts with salt or alkaline substances at high temperature by arranging a support table, a fixed plate, a bottom plate, a reaction furnace body, a partition, a storage component, and the cooperation between the limiting component, the driving component and the scraping unit. The storage component can lift up the fluorine-containing waste activated carbon powder at the bottom as the reaction furnace body moves, so that the mixture can be fully and evenly heated. After the storage component moves to break up the lumps, the scraping unit will clean them up, so that the mixture is prevented from adhering to the storage component or the partition. The device is simple and convenient to operate, and after the fluorine-containing waste activated carbon after the high-temperature reaction is dissolved and filtered, the activated carbon can continue to be dried and regenerated, so it has strong practicality.

[0017] It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure.

[0018] This application document provides an overview of various implementations or examples of the technology described in the present disclosure, and is not a comprehensive disclosure of the entire scope or all features of the disclosed technology. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present invention. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0020] Figure 1 A schematic diagram of the overall structure provided by an embodiment of the present invention; Figure 2 A schematic diagram of a partial structural decomposition provided by an embodiment of the present invention; Figure 3 A schematic diagram of the connection between the reaction furnace body and the fixed plate structure provided by an embodiment of the present invention; Figure 4-5 A schematic longitudinal section diagram of a reactor structure provided by an embodiment of the present invention; Figure 6 for Figure 2 The enlarged view of point A in the middle; Figure 7 for Figure 4 The enlarged view of point B in the middle; Figure 8 for Figure 5 Enlarged view of point C in the middle; Fig. 9 for Figure 5 Enlarged view of point D in the middle.

[0021] Description of reference numerals: 1. Support table; 11. Fixed plate; 12. Bottom plate; 13. Reactor body; 14. Partition plate; 21. Connecting rod; 22. Receiving plate; 23. Side plate; 24. Spring 1; 25. Elastic rope; 31. Arc plate; 32. Filter hole; 41. Auxiliary ring; 42. Track groove; 51. Scraper plate; 52. Spring 2; 61. Crushing cylinder; 62. Conveying auger; 63. Guide pipe; 64. Semicircular frame 1; 65. Semicircular frame 2; 66. Feeding pipe; 7. Limiting plate; 81. Wastewater pipe; 82. Secondary treatment tank; 91. Active rotating rod; 92. Connecting frame. DETAILED DESCRIPTION

[0022] In order to make the purpose, technical solution and advantages of the embodiments of the present disclosure clearer, the technical solution of the embodiments of the present disclosure will be clearly and completely described below in conjunction with the drawings of the embodiments of the present disclosure. Obviously, the described embodiments are part of the embodiments of the present disclosure, not all of the embodiments. Based on the described embodiments of the present disclosure, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present disclosure. See also Figure 1-9The present embodiment provides a regeneration and desorption system for fluorine-containing waste activated carbon, comprising a support platform 1, a fixed disk 11 is rotatably connected to the support platform 1, a bottom plate 12 is connected to the support platform 1 through an electric telescopic rod, a reaction furnace body 13 is rotatably connected to the bottom plate 12, a part for supporting the fixed disk 11 is provided on the support platform 1, and the part is connected to the fixed disk 11 through a rotating shaft, and a filter screen for filtering liquid is provided at the bottom of the fixed disk 11, and the bottom is configured to be openable, so as to facilitate the discharge of fixed substances in the reaction furnace body 13, wherein the electric telescopic rod is connected to an external power supply and a control switch, and when discharging, by opening the channel on the fixed disk 11, the reaction furnace body 13 is driven to rise to an inclined state through the electric telescopic rod, so as to facilitate the discharge of fixed substances from the channel, a plurality of partitions 14 are fixedly connected to the reaction furnace body 13, and a material storage component is provided between two adjacent partitions 14; a limiting component is also provided, which is provided on the fixed disk 11; and a driving component is also provided, which is provided at On the bottom plate 12; when the reaction furnace body 13 rotates, it drives the fluorine-containing waste activated carbon at the bottom layer to move and enter the limiting component for screening and lifting. The storage component moves under the action of the driving component to crush the agglomerated fluorine-containing waste activated carbon, and then the surface of the storage component is cleaned by the scraping unit. The fluorine-containing waste activated carbon powder in the reaction furnace body 13 will agglomerate when it dissolves with salt or alkali substances at high temperature. The storage component lifts the fluorine-containing waste activated carbon powder at the bottom as the reaction furnace body 13 moves. When smaller fluorine-containing waste activated carbon powder overflows, the agglomerates generated during the reaction will remain in the space between the receiving component, the partition 14 and the limiting component. At this time, the receiving component moves under the action of the driving component to beat the agglomerates so that the agglomerates are crushed and fall. The device can make the mixture fully and evenly heated, and after the storage component moves to crush the agglomerates, they will be cleaned by the scraping unit to prevent the mixture from adhering to the storage component or the partition 14.

[0023] In an embodiment further provided by the present invention, the material storage assembly includes a connecting rod 21 slidably connected to the reaction furnace body 13; a material receiving plate 22 is fixedly connected to the connecting rod 21, and side plates 23 are slidably connected to the inside of both sides of the material receiving plate 22, and the two side plates 23 are connected to the inside of the material receiving plate 22 through a spring 24, and an elastic rope 25 is arranged between each of the material receiving plates 22 and the reaction furnace body 13. When the material receiving plate 22 moves toward the reaction furnace body 13, the side plates 23 compressed on both sides of the material receiving plate 22 extend out to fill the gap between the moving material receiving plate 22 and the partition 14, and the side plates 23 will clean the side walls of the partition 14 while extending out to avoid adhesion.

[0024] Furthermore, the driving assembly includes an auxiliary ring 41 fixedly connected to the bottom plate 12, and a track groove 42 is provided in the auxiliary ring 41. A plurality of connecting rods 21 are slidably connected in the track groove 42. The track groove 42 is a closed loop formed by two arc grooves, and the head and tail connection of the two arc grooves are both set to be inclined. The specific shapes of the two can be found in the appendix of the specification. Figure 5 .

[0025] In an embodiment further provided by the present invention, the limiting component includes an arc-shaped plate 31 fixedly connected to the fixed disk 11, and a plurality of filter holes 32 are provided on the arc-shaped plate 31. A plurality of partitions 14 are in contact with the arc-shaped plate 31 during their movement. The filter holes 32 are arranged at a portion of the arc-shaped plate 31, and the purpose is to facilitate screening of the mixture between the partition 14 and the storage component.

[0026] Furthermore, the scraper unit includes a scraper plate 51 slidably connected to the arc plate 31, and the scraper plate 51 is connected to the inner wall of the arc plate 31 through a spring 2 52. When the receiving plate 22 on the material storage assembly moves to the scraper plate 51, the receiving plate 22 moves close to one side of the partition 14, so that the scraper plate 51 can move under the action of the spring 2 52 to clean the mixture attached to the receiving plate 22 and the partition 14.

[0027] In an embodiment further provided by the present invention, a crushing cylinder 61 is further included, and the crushing cylinder 61 is connected to the reaction furnace body 13 through a conveying mechanism; the conveying mechanism includes a conveying auger 62 connected to the discharge end of the crushing cylinder, and the conveying auger 62 and the crushing cylinder 61 are both existing equipment. By first crushing the fluorine-containing waste activated carbon, it is convenient for later processing. The discharge pipe 66 of the conveying auger 62 is rotatably connected to a guide pipe 63, and the guide pipe 63 is connected to a semicircular frame 1 64, and the semicircular frame 1 64 is rotatably connected to a semicircular frame 2 65, and the semicircular frame The second semicircular frame 65 is supported and fixed by an external supporting device, and the second semicircular frame 65 is connected to the reaction furnace body 13 through a feed pipe 66. The reaction furnace body 13 can be set to be replaced in multiple groups, and the powder entering the guide tube 63 can be transported to different reaction furnace bodies 13 by rotating and switching the semicircular frame 1 64, so that one crushing cylinder 61 can feed multiple reaction furnace bodies 13, and it also avoids the trouble of using a material receiving device after the existing fluorine-containing activated carbon is crushed and then introduced into the reaction furnace body 13, thereby improving the use efficiency of the equipment.

[0028] In the embodiment provided by the present invention, an auxiliary component is provided in the semicircular frame 64, and the auxiliary component includes two limit plates 7 fixedly connected in the semicircular frame 64, and the limit plates 7 are arranged on both sides of the guide tube 63 for material falling, and the guide tube 63 falling into the semicircular frame 64 is limited by the limit rod 7.

[0029] In a solution further provided by the present invention, a discharge port of the reaction furnace body 13 is connected to a waste water pipe 81 , the waste water pipe 81 is connected to a secondary treatment tank 82 , and a kinetic energy unit is provided on the secondary treatment tank 82 .

[0030] Specifically, the kinetic energy unit includes an active rotating rod 91 rotatably connected to the secondary processing tank 82, a connecting frame 92 is fixedly connected to the active rotating rod 91, the connecting frame 92 is fixedly connected to the semicircular frame 1 64, the active rotating rod 91 is connected to an external power supply and a control switch, and the active rotating rod 91 rotates through the connecting frame 92 to drive the semicircular frame 1 64 to rotate in the semicircular frame 2 65, thereby realizing feeding of different reaction furnace bodies 13.

[0031] A desorption method for fluorine-containing waste activated carbon, the use method of which is the same as the above-mentioned regeneration and desorption system for fluorine-containing waste activated carbon, the activated carbon desorption and regeneration method comprises the following steps: S1: pouring the fluorine-containing waste activated carbon into the crushing drum 61 and crushing it, and then conveying the crushed fluorine-containing waste activated carbon powder to the reaction furnace body 13 through the conveying mechanism, adding salt or alkaline substances, and passing inert gas to perform high-temperature melting reaction regeneration; S2: After the reaction is completed, the mixture is cooled to obtain a mixture of alkali or salt and activated carbon. Water is added to the reaction furnace body 13 to dissolve and filter the mixture to obtain activated carbon and salt solution. The salt solution enters the secondary treatment tank 82 for further treatment; S3: Restart the reaction furnace body 13 to dry the remaining activated carbon to obtain regenerated activated carbon.

[0032] Working principle: During operation, the fluorine-containing waste activated carbon to be processed is poured into the crushing cylinder. The fluorine-containing waste activated carbon powder crushed by the crushing cylinder is transported through the conveying auger 62, and enters the semicircular frame 1 64 through the guide pipe 63, and finally enters the reaction furnace body 13 along the discharge pipe 66 connected to the semicircular frame 2 65, and simultaneously adds salt or alkali substances to the reaction furnace body 13 to react with it. During the reaction, the reaction furnace body 13 rotates. When the storage assembly arranged on the reaction furnace body 13 rotates and the space between the partition 14 moves to the bottom, the receiving plate 22 moves and fits the inner wall of the reaction furnace body 13. At this time, the space between the receiving plate 22 and the partition 14 is exposed, which is used to receive the mixture at the bottom and drive it to rotate. During the rotation, the arc plate 31 acts on the mixture. The material receiving assembly is blocked until it rotates to a certain angle, and the mixture will leak out from the filter hole 32 on the arc plate 31. When the material receiving assembly moves to the highest point, the unclumped mixture is exposed from the filter hole 32, and the agglomerated mixture is intercepted when it rotates to the arc plate 31. At this time, the connecting rod 21 connected to the material receiving plate 22 will move from the arc portion of the large diameter of the track groove 42 to the arc portion of the small diameter, and drive the material receiving plate 22 close to the arc plate 31, so that the agglomerated mixture can be squeezed and crushed, so that the agglomerated mixture can be discharged from the filter hole 32 on the arc plate 31 after being crushed. After the discharge is completed, the material receiving plate 22 moves to the scraper plate 51, and the top of the partition 14 and the surface of the material receiving plate 22 are cleaned by the scraper plate 51.

[0033] The above description is only by way of illustration of certain exemplary embodiments of the present invention. It is undoubted that those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A regeneration and desorption system for fluorine-containing waste activated carbon, comprising a support platform (1), characterized in that: The support platform (1) is rotatably connected to a fixed plate (11), the support platform (1) is connected to a bottom plate (12) via an electric telescopic rod, the bottom plate (12) is rotatably connected to a reaction furnace body (13), a plurality of partitions (14) are fixedly connected to the reaction furnace body (13), and a material storage assembly is provided between two adjacent partitions (14); Also included is a limiting component, which is arranged on the fixed disk (11); Also included is a drive assembly, which is arranged on the bottom plate (12); When the reaction furnace body (13) rotates, the fluorine-containing waste activated carbon on the bottom layer moves and enters the limiting component for screening and lifting. The storage component moves under the action of the driving component to crush and break the agglomerated fluorine-containing waste activated carbon, and then the surface of the storage component is cleaned by the scraping unit.

2. A regeneration and desorption system for fluorine-containing waste activated carbon according to claim 1, characterized in that: The material storage assembly comprises a connecting rod (21) slidably connected to the reaction furnace body (13); A material receiving plate (22) is fixedly connected to the connecting rod (21), and side plates (23) are slidably connected to the inside of both sides of the material receiving plate (22). The two side plates (23) are connected to the inside of the material receiving plate (22) via a spring 1 (24), and an elastic rope (25) is provided between each of the material receiving plates (22) and the reaction furnace body (13).

3. A regeneration and desorption system for fluorine-containing waste activated carbon according to claim 1, characterized in that: The limiting assembly comprises an arc-shaped plate (31) fixedly connected to the fixed disk (11), the arc-shaped plate (31) being provided with a plurality of filtering holes (32), and the plurality of partition plates (14) are in contact with the arc-shaped plate (31) during their movement.

4. A regeneration and desorption system for fluorine-containing waste activated carbon according to claim 2, characterized in that: The driving assembly comprises an auxiliary ring (41) fixedly connected to the bottom plate (12), a track groove (42) is provided in the auxiliary ring (41), and a plurality of connecting rods (21) are slidably connected in the track groove (42).

5. A regeneration and desorption system for fluorine-containing waste activated carbon according to claim 3, characterized in that: The scraper unit comprises a scraper plate (51) slidably connected in the arc-shaped plate (31); the scraper plate (51) is connected to the inner wall of the arc-shaped plate (31) via a second spring (52).

6. The regeneration and desorption system for fluorine-containing waste activated carbon according to claim 1, characterized in that: It also includes a pulverizing cylinder (61), wherein the pulverizing cylinder (61) is connected to the reaction furnace body (13) via a conveying mechanism; The conveying mechanism comprises a conveying auger (62) connected to a discharge end of the crushing drum, a discharge pipe (66) of the conveying auger (62) being rotatably connected to a guide pipe (63), the guide pipe (63) being connected to a semicircular frame 1 (64), the semicircular frame 1 (64) being rotatably connected to a semicircular frame 2 (65), and the semicircular frame 2 (65) being connected to a reaction furnace body (13) via a discharge pipe (66).

7. A regeneration and desorption system for fluorine-containing waste activated carbon according to claim 6, characterized in that: An auxiliary component is provided in the semicircular frame one (64), and the auxiliary component comprises two limit plates (7) fixedly connected in the semicircular frame one (64).

8. The regeneration and desorption system for fluorine-containing waste activated carbon according to claim 6, characterized in that: The discharge port of the reaction furnace body (13) is connected to a waste water pipe (81), the waste water pipe (81) is connected to a secondary treatment tank (82), and a kinetic energy unit is provided on the secondary treatment tank (82).

9. A regeneration and desorption system for fluorine-containing waste activated carbon according to claim 8, characterized in that: The kinetic energy unit comprises an active rotating rod (91) rotatably connected to the secondary processing tank (82), a connecting frame (92) being fixedly connected to the active rotating rod (91), and the connecting frame (92) being fixedly connected to the semicircular frame 1 (64).

10. A desorption method for fluorine-containing waste activated carbon, using the regeneration and desorption system for fluorine-containing waste activated carbon according to any one of claims 1 to 9, characterized in that: The activated carbon desorption and regeneration method comprises the following steps: S1: pouring fluorine-containing waste activated carbon into a crushing drum (61) for crushing, and then conveying the crushed fluorine-containing waste activated carbon powder to a reaction furnace body (13) through a conveying mechanism, adding salt or alkaline substances, and introducing inert gas to perform high-temperature melting reaction regeneration; S2: After the reaction is completed, the mixture is cooled to obtain a mixture of alkali or salt and activated carbon. Water is added to the reaction furnace body (13) to dissolve the mixture and filter to obtain activated carbon and salt solution. The salt solution enters the secondary treatment tank (82) for further treatment; S3: Restarting the reaction furnace body (13) to dry the remaining activated carbon to obtain regenerated activated carbon.

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