Activated carbon adsorption granular sludge regeneration treatment system and method for high-salinity wastewater

Abstract

The invention relates to a high-salinity wastewater activated carbon adsorption granular sludge regeneration treatment system and method, and relates to the technical field of wastewater treatment.The system comprises an adjusting tank, an activated carbon adsorption tank, a carbon-water separation device, a deep treatment device and a clean water tank which are sequentially connected; the activated carbon adsorption tank is used for adsorbing organic matters in the high-salinity wastewater; the advanced treatment device is used for carrying out advanced treatment on residual organic matters and ammonia nitrogen in the wastewater; the carbon-water separation device is sequentially connected with the granular sludge regeneration device and the regenerated carbon-water separation device; the granular sludge regeneration device is used for regenerating saturated activated carbon; and the regenerated carbon-water separation device is connected back to the activated carbon adsorption tank through a regenerated activated carbon return pipe, is connected back to the advanced treatment device through a discharge water pipe and is connected back to the granular sludge regeneration device through a circulating water pipe. Organic matter and salt are separated through activated carbon adsorption, and activated carbon saturated through adsorption is subjected to biological regeneration through granular sludge, so that low-cost treatment of high-salt water is realized.

Description

Technical Field

[0001] The invention relates to the field of wastewater treatment, and in particular to a system and method for regenerating and treating activated carbon adsorbed granular sludge in high-salinity wastewater. Background Art

[0002] High-salinity wastewater mainly comes from the pesticide, chemical, pharmaceutical, printing and dyeing, coal chemical, food and other industries; in addition, the salinity of reverse osmosis concentrate produced by landfill leachate and industrial wastewater reuse is also high. In addition to high salt content, high-salinity wastewater usually contains organic matter and other impurities of different concentrations and compositions, which further increases the difficulty of high-salinity wastewater treatment.

[0003] Common treatment methods for high-salt wastewater are mainly membrane separation, thermal separation, and salt-tolerant bacteria biological treatment. Among them, membrane separation usually uses microfiltration, ultrafiltration, nanofiltration, reverse osmosis and other technologies to separate different components; thermal separation usually uses multi-effect evaporation, mechanical thermal compression and membrane distillation to separate salt and water; salt-tolerant bacteria biological treatment uses salt-tolerant bacteria to biodegrade organic matter under high-salt conditions to reduce the concentration of organic matter in high-salt water. The above methods all have limitations. Nanofiltration, reverse osmosis and other membrane separation technologies are suitable for treating wastewater with low salt content. The treatment efficiency is low for wastewater with high salt content, and membrane pollution seriously limits the application of membranes when the organic concentration is high; thermal separation is suitable for treating wastewater with high salt content, but when the organic concentration is high, the system is seriously blocked and the system is difficult to operate stably for a long time; salt-tolerant bacteria are suitable for wastewater with relatively low salt content. When the salt content is high, the biological treatment is inhibited, especially when the sulfate concentration is high, the anaerobic treatment of organic matter is difficult to carry out.

[0004] Separating organic matter from high-salt water by activated carbon adsorption to achieve independent treatment of organic matter and salt is an effective method to solve the problem of high-salt wastewater treatment, but the high cost of activated carbon thermal regeneration restricts the application of this technology. The cost of biological regeneration of activated carbon is low, but most of them use granular activated carbon adsorption bacterial liquid regeneration, which is rarely used in practice; in actual projects, microorganisms exist in the form of flocculent activated sludge, and long-term use of sludge will cover the surface of activated carbon, affecting its application. Summary of the invention

[0005] In view of the defects existing in the prior art, the purpose of the present invention is to provide an efficient and economical high-salt wastewater activated carbon adsorption granular sludge regeneration treatment system and method. The use of this system and method can achieve the separate treatment of organic matter and salt in high-salt wastewater, making the treatment of organic matter and salt more efficient, convenient and low-cost.

[0006] To achieve the above purpose, the technical solution adopted by the present invention is as follows:

[0007] A high-salinity wastewater activated carbon adsorption granular sludge regeneration treatment system, comprising a regulating tank, an activated carbon adsorption tank, a carbon-water separation device, a deep treatment device and a clear water tank connected in sequence, wherein:

[0008] The regulating tank is used to regulate the water quality and quantity of high-salinity wastewater, and its water inlet is connected to the high-salinity wastewater inlet pipe, and the water outlet of the clean water tank is connected to the external drainage pipe or the recycled water pipe; the activated carbon adsorption tank is used to adsorb organic matter in high-salinity wastewater; the carbon-water separation device is used to separate carbon-water mixture; the deep treatment device is used to deeply treat the remaining organic matter and ammonia nitrogen in the wastewater;

[0009] The carbon-water separation device is connected in sequence with the granular sludge regeneration device and the regenerated carbon-water separation device. The granular sludge regeneration device is used to regenerate the saturated activated carbon that has adsorbed organic matter and ammonia nitrogen to achieve the regeneration of activated carbon; the regenerated carbon-water separation device is connected back to the activated carbon adsorption tank through a regenerated activated carbon reflux pipe, connected back to the deep treatment device through a discharge water pipe, and connected back to the granular sludge regeneration device through a circulating water pipe.

[0010] Furthermore, in the high-salt wastewater activated carbon adsorption granular sludge regeneration treatment system as described above, the activated carbon adsorption tank and the carbon-water separation device are provided with multiple stages according to the organic matter concentration in the high-salt wastewater; when multiple stages are provided, the activated carbon regenerated by the granular sludge regeneration device is refluxed to the last stage, and the activated carbon separated by each stage of the carbon-water separation device is returned to the activated carbon adsorption tank of the previous stage, so as to ensure that the adsorption capacity of the activated carbon is fully utilized.

[0011] Furthermore, in the above-mentioned high-salinity wastewater activated carbon adsorption granular sludge regeneration treatment system, the activated carbon adsorption tank contains powdered activated carbon, and the concentration of the powdered activated carbon is 1-15 g / L.

[0012] Furthermore, in the above-mentioned high-salinity wastewater activated carbon adsorption granular sludge regeneration treatment system, the carbon-water separation device and the regenerated carbon-water separation device use sedimentation, flotation, filtration or membrane separation to separate the carbon-water mixture.

[0013] Furthermore, in the high-salinity wastewater activated carbon adsorption granular sludge regeneration treatment system as described above, depending on the purpose of the external drainage, the deep treatment method adopted by the deep treatment device includes: membrane separation, thermal separation, or a combination of the two, or precipitation, oxidation reaction.

[0014] Furthermore, in the high-salinity wastewater activated carbon adsorption granular sludge regeneration treatment system as described above, the granular sludge regeneration device uses anaerobic granular sludge plus aerobic granular sludge or aerobic granular sludge alone to achieve activated carbon regeneration; the concentration of granular sludge in the granular sludge regeneration device is 5-15g / L.

[0015] Furthermore, in the high-salt wastewater activated carbon adsorption granular sludge regeneration treatment system as described above, the granular sludge regeneration device is connected to a fresh water or recycled water replenishment pipe for replenishing fresh water to ensure water balance in the system; it is also connected to a N source, a P source and an alkalinity addition pipe for replenishing N, P and alkalinity to ensure the nutrients and environment required for the biochemical reaction of the granular sludge.

[0016] Furthermore, in the above-mentioned high-salinity wastewater activated carbon adsorption granular sludge regeneration treatment system, a filter screen is provided in the granular sludge regeneration device for separating the granular sludge and the carbon-water mixture so that the granular sludge is retained in the granular sludge regeneration device.

[0017] A method for regenerating activated carbon adsorbed granular sludge in high-salinity wastewater, the method is based on the system as described above, and the method comprises the following steps:

[0018] The high-salinity wastewater to be treated enters the regulating tank, activated carbon adsorption tank, carbon-water separation device, deep treatment device, and clear water tank in sequence for water quality and quantity regulation, adsorption, separation, and deep treatment, and the effluent meets the standards for discharge or reuse;

[0019] The adsorption saturated activated carbon separated by the carbon-water separation device enters the granular sludge regeneration device for biological regeneration, and the regenerated activated carbon suspension enters the regenerated carbon-water separation device for carbon-water separation; the regenerated activated carbon separated by the regenerated carbon-water separation device flows back to the activated carbon adsorption tank through the regenerated activated carbon reflux pipe for organic activated carbon adsorption; most of the purified water separated by the regenerated carbon-water separation device flows back to the granular sludge regeneration device through the circulating water pipe as circulating water for desorption of saturated activated carbon and providing a biochemical reaction environment, and a small part enters the deep treatment device through the discharge water pipe for discharge or reuse after deep treatment, so as to prevent the accumulation of salt concentration in the granular sludge regeneration device.

[0020] Furthermore, in the above-mentioned method for regenerating high-salt wastewater activated carbon adsorption granular sludge, the hydraulic retention time of the regulating tank is 4 to 24 hours; the hydraulic retention time of the activated carbon adsorption tank is 0.5 to 3 hours; and the activated carbon retention time of the granular sludge regeneration device is 6 to 240 hours.

[0021] Compared with the prior art, the method and system for regenerating high-salinity wastewater activated carbon adsorption granular sludge provided by the present invention have the following beneficial effects:

[0022] The present invention can reduce the organic matter content in high-salt water to a lower level through powdered activated carbon adsorption, solve the problem of organic matter pollution or clogging in the heat treatment and membrane treatment of high-salt water, facilitate the efficient operation of the subsequent heat treatment and membrane treatment system of high-salt water, and the treated water can be stably discharged or reused up to standard; the adsorption saturated activated carbon can be biologically regenerated through granular sludge under low-salt conditions, which solves the inhibitory effect of high salt on microorganisms, and can be circulated with water as the regeneration liquid, with low regeneration cost and high biological treatment efficiency. The present invention realizes the separate treatment of organic matter and salt treatment of high-salt wastewater by combining powdered activated carbon adsorption with granular sludge activated carbon biological regeneration method, making the treatment of organic matter and salt more efficient, convenient and low-cost. The present invention provides a new high-efficiency and low-cost solution for high-salt wastewater. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a simplified process flow diagram of a method for regenerating activated carbon adsorbed granular sludge for treating high-salinity wastewater provided in a specific embodiment of the present invention;

[0024] Figure 2 It is a schematic diagram of a specific process flow provided in one embodiment of the present invention;

[0025] In the figure: 1-regulating tank; 2-activated carbon adsorption tank; 3-carbon-water separation device; 4-deep treatment device; 5-clear water tank; 6-granular sludge regeneration device; 7-regenerated carbon-water separation device; 21-primary activated carbon adsorption tank; 22-secondary activated carbon adsorption tank; 31-primary sedimentation tank; 32-secondary sedimentation tank. DETAILED DESCRIPTION

[0026] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0027] like Figure 1 As shown, the present invention provides a high-salinity wastewater activated carbon adsorption granular sludge regeneration treatment system, comprising: a regulating tank 1, an activated carbon adsorption tank 2, a carbon-water separation device 3, a deep treatment device 4, a clear water tank 5, a granular sludge regeneration device 6 and a regenerated carbon-water separation device 7; wherein:

[0028] The activated carbon regulating tank 1, the activated carbon adsorption tank 2, the carbon water separation device 3, the deep treatment device 4, and the clean water tank 5 are connected in sequence, and the carbon water separation device 3 is connected in sequence with the granular sludge regeneration device 6 and the regenerated carbon water separation device 7. The regenerated carbon water separation device 7 is connected back to the activated carbon adsorption tank 2 through the regenerated activated carbon return pipe, connected back to the deep treatment device 4 through the discharge water pipe, and connected back to the granular sludge regeneration device 6 through the circulating water pipe.

[0029] The regulating tank 1 is used to regulate the water quality and quantity of high-salinity wastewater, and its water inlet is connected to the high-salinity wastewater inlet pipe. The high-salinity wastewater to be treated enters the regulating tank 1 through the high-salinity wastewater inlet pipe for water quality and quantity regulation, and the regulated wastewater enters the activated carbon adsorption tank 2.

[0030] The activated carbon adsorption tank 2 contains powdered activated carbon, which is used to adsorb organic matter in the wastewater. The concentration of the powdered activated carbon is 1-15 g / L. The wastewater after adsorption by the activated carbon forms a carbon-water mixture and enters the carbon-water separation device 3.

[0031] The carbon-water separation device 3 is used to separate carbon-water mixture, and the separated water enters the deep treatment device 4 for deep treatment. Specifically, the carbon-water separation device 3 can separate carbon-water by sedimentation, flotation, filtration or membrane separation.

[0032] The deep treatment device 4 is used to perform deep treatment on the remaining organic matter and ammonia nitrogen in the water to meet the discharge requirements. According to the purpose of the external drainage, the deep treatment device 4 can adopt membrane separation methods such as microfiltration, ultrafiltration, nanofiltration, reverse osmosis, or thermal separation methods such as multi-effect evaporation, mechanical thermal compression, and membrane distillation, or a combination of the two, or precipitation, oxidation reaction, etc. to achieve deep treatment.

[0033] The drain outlet of the clean water tank 5 is connected to an external drain pipe or a recycled water pipe for discharging wastewater that meets the standards.

[0034] The granular sludge regeneration device 6 is used to regenerate the saturated activated carbon adsorbed with organic matter and ammonia nitrogen, and it uses anaerobic granular sludge plus aerobic granular sludge or aerobic granular sludge alone to achieve the regeneration of activated carbon. The concentration of granular sludge in the granular sludge regeneration device 6 is 5-15g / L. The granular sludge regeneration device 6 is connected to a fresh water or recycled water replenishment pipe, which is used to add fresh water to the granular sludge regeneration device 6 to ensure the water balance in the system; the granular sludge regeneration device 6 is also connected to a N source, a P source and an alkalinity addition pipe, which is used to add a small amount of N, P and alkalinity to the granular sludge regeneration device 6 to ensure the nutrition and environment required for the biochemical reaction of the granular sludge.

[0035] The granular sludge regeneration device 6 is equipped with a filter screen to separate the granular sludge from the carbon-water mixture, so that the granular sludge is retained in the granular sludge regeneration device 6, and the carbon-water mixture is separated by the filter screen and then discharged into the regenerated carbon-water separation device 7 for carbon-water separation. Specifically, the regenerated carbon-water separation device 7 can achieve carbon-water separation by sedimentation, flotation, filtration or membrane separation.

[0036] The suspension of regenerated activated carbon and water separated by the regenerated carbon-water separation device 7 is returned to the activated carbon adsorption tank 2 through the regenerated activated carbon reflux pipe for organic matter adsorption. Most of the purified water separated by the regenerated carbon-water separation device 7 is returned to the granular sludge regeneration device 6 through the circulating water pipe as circulating water for desorption of saturated activated carbon and providing a biochemical reaction environment. A small part enters the deep treatment device 4 through the discharge water pipe for deep treatment to prevent salt concentration accumulation in the granular sludge regeneration device 6.

[0037] According to the concentration of organic matter in the high-salt wastewater, the activated carbon adsorption tank 2 and the carbon-water separation device 3 can be set in multiple stages; when multiple stages are set, the activated carbon regenerated by the granular sludge regeneration device 6 is returned to the last stage, and the activated carbon separated by each carbon-water separation device returns to the activated carbon adsorption tank of the previous stage to ensure that the adsorption capacity of the activated carbon is fully utilized.

[0038] In a specific embodiment, the activated carbon adsorption tank 2 and the carbon-water separation device 3 are set in two stages, the deep treatment device 4 uses electrocatalytic oxidation to achieve deep treatment, and the granular sludge regeneration device 6 uses aerobic granular sludge to achieve activated carbon regeneration. Figure 2 As shown, the activated carbon adsorption tank 2 includes a primary activated carbon adsorption tank 21 and a secondary activated carbon adsorption tank 22, and the carbon-water separation device 3 includes a primary sedimentation tank 31 and a secondary sedimentation tank 32. The active regulating tank 1, the primary activated carbon adsorption tank 21, the primary sedimentation tank 31, the secondary activated carbon adsorption tank 22, the secondary sedimentation tank 32, the deep treatment device 4 and the clean water tank 5 are connected in sequence; the primary sedimentation tank 31 is connected in sequence with the granular sludge regeneration device 6 and the regenerated carbon-water separation device 7. The regenerated carbon-water separation device 7 is connected back to the deep treatment device 4 through the discharge water pipe, connected back to the granular sludge regeneration device 6 through the circulating water pipe, and connected back to the secondary activated carbon adsorption tank 22 through the regenerated activated carbon return pipe; the secondary sedimentation tank 32 is connected back to the primary activated carbon adsorption tank 21 through the activated carbon return pipe. In this embodiment, the deep treatment device 4 uses an electrocatalytic oxidation method to deeply treat the remaining organic matter and ammonia nitrogen in the water; the regenerated carbon-water separation device 7 uses a precipitation method to achieve carbon-water separation.

[0039] The present invention also provides a method for regenerating activated carbon adsorbed granular sludge in high-salinity wastewater, comprising the following steps:

[0040] The high-salt wastewater to be treated enters the regulating tank 1 for water quality and quantity adjustment, and the hydraulic retention time of the regulating tank 1 is 4 to 24 hours; then it enters the primary activated carbon adsorption tank 21 to adsorb organic matter in the wastewater through powdered activated carbon, and the carbon-water mixture enters the primary sedimentation tank 31 for carbon-water separation. The primary sedimentation effluent enters the secondary activated carbon adsorption tank 22 for further adsorption of organic matter in the water through powdered activated carbon; the carbon-water mixture enters the secondary sedimentation tank 32 for carbon-water separation, and the secondary sedimentation effluent enters the deep treatment device 4 to oxidize and decompose the remaining organic matter and ammonia nitrogen in the water, and the effluent enters the clear water tank 5 for discharge in compliance with the standards; the powdered activated carbon suspension precipitated from the primary sedimentation tank 31 enters the granular sludge regeneration device 6, and the activated carbon The organic matter and ammonia nitrogen adsorbed on the surface are desorbed into the water and degraded by the aerobic granular sludge to achieve the regeneration of activated carbon. The mixture of regenerated activated carbon and water is separated by the built-in filter screen in the granular sludge regeneration device 6 and discharged into the regenerated carbon water separation device 7 for carbon-water separation. The suspension of regenerated activated carbon and water is returned to the secondary activated carbon adsorption tank 22 through the regenerated activated carbon reflux pipe for organic matter adsorption. Most of the purified water separated by the regenerated carbon water separation device 7 is used as circulating water and returned to the granular sludge regeneration device 6 through the circulating water pipe for desorption of saturated activated carbon and providing a biochemical reaction environment. A small part enters the deep treatment device 4 through the discharge water pipe for deep treatment to prevent the accumulation of salt concentration in the granular sludge regeneration device 6. The granular sludge regeneration device 6 replenishes fresh water through the fresh water replenishment pipe to ensure the water balance in the system; a small amount of N and P are added through the N source and P source addition pipes to ensure the nutrients required for the biochemical reaction of the granular sludge. The hydraulic retention time of the activated carbon adsorption tank 2 is 0.5 to 3 hours; the activated carbon retention time of the granular sludge regeneration device 6 is 6 to 240 hours.

[0041] The following examples are given to illustrate the treatment effects of the present invention.

[0042] Example 1

[0043] The high-salinity wastewater activated carbon adsorption granular sludge regeneration treatment system is used to treat a fine chemical wastewater, with a treatment capacity of 25L / h and a treatment temperature of 25℃; the influent COD is 2000-3000mg / L, the ammonia nitrogen is 10-15mg / L, the pH is 6-9, the sulfate ion is 10000-15000mg / L, and the chloride ion is 300-800mg / L; the retention time of the regulating tank 1 is 8h; the powdered activated carbon concentration in the primary activated carbon adsorption tank 21 is 10g / L, and the hydraulic retention time is 2h; the powdered activated carbon concentration in the secondary activated carbon adsorption tank 22 is 8g / L, and the hydraulic retention time is 2.5h; the aerobic granular sludge concentration in the aerobic granular sludge reaction tank is 10g / L, and the activated carbon retention time of the granular sludge regeneration device 6 is 24h; the power of the electrocatalytic oxidation device is 0.12kW; the effluent COD of the high-salinity wastewater after treatment is 45-50mg / L, and the ammonia nitrogen is 1-1.5mg / L.

[0044] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.

Claims

1. A high-salinity wastewater activated carbon adsorption granular sludge regeneration treatment system, characterized in that: The system comprises: a regulating tank (1), an activated carbon adsorption tank (2), a carbon-water separation device (3), a deep treatment device (4) and a clear water tank (5) connected in sequence, wherein: The regulating tank (1) is used to regulate the water quality and quantity of high-salinity wastewater, and its water inlet is connected to the high-salinity wastewater inlet pipe. The activated carbon adsorption tank (2) is used to adsorb organic matter in the high-salinity wastewater; the carbon-water separation device (3) is used to separate carbon-water mixture; the deep treatment device (4) is used to perform deep treatment on the remaining organic matter and ammonia nitrogen in the wastewater; the water outlet of the clean water tank (5) is connected to an external drainage pipe or a recycled water pipe; The carbon-water separation device (3) is connected in sequence with a granular sludge regeneration device (6) and a regenerated carbon-water separation device (7); the granular sludge regeneration device (6) is used to regenerate saturated activated carbon adsorbed with organic matter and ammonia nitrogen, thereby realizing the regeneration of activated carbon; the regenerated carbon-water separation device (7) is connected back to the activated carbon adsorption tank (2) through a regenerated activated carbon return pipe, connected back to the deep treatment device (4) through a discharge water pipe, and connected back to the granular sludge regeneration device (6) through a circulating water pipe.

2. The high-salinity wastewater activated carbon adsorption granular sludge regeneration treatment system according to claim 1 is characterized in that: According to the concentration of organic matter in the high-salt wastewater, the activated carbon adsorption tank (2) and the carbon-water separation device (3) are arranged in multiple stages; when multiple stages are arranged, the activated carbon regenerated by the granular sludge regeneration device (6) is refluxed to the last stage, and the activated carbon separated by each carbon-water separation device is returned to the activated carbon adsorption tank of the previous stage, so as to ensure that the adsorption capacity of the activated carbon is fully utilized.

3. The high-salinity wastewater activated carbon adsorption granular sludge regeneration treatment system according to claim 2 is characterized in that: The activated carbon adsorption pool (2) contains powdered activated carbon, and the concentration of the powdered activated carbon is 1 to 15 g / L.

4. The high-salinity wastewater activated carbon adsorption granular sludge regeneration treatment system according to claim 3 is characterized in that: The carbon-water separation device (3) and the regenerated carbon-water separation device (7) use sedimentation, flotation, filtration or membrane separation to separate the carbon-water mixture.

5. The high-salinity wastewater activated carbon adsorption granular sludge regeneration treatment system according to claim 4 is characterized in that: According to the purpose of the external drainage, the deep treatment method adopted by the deep treatment device (4) includes: membrane separation, thermal separation, or a combination of the two, or precipitation, oxidation reaction.

6. The high-salinity wastewater activated carbon adsorption granular sludge regeneration treatment system according to claim 5 is characterized in that: The granular sludge regeneration device (6) uses anaerobic granular sludge plus aerobic granular sludge or aerobic granular sludge alone to achieve the regeneration of activated carbon; the concentration of the granular sludge in the granular sludge regeneration device (6) is 5-15g / L.

7. The high-salinity wastewater activated carbon adsorption granular sludge regeneration treatment system according to claim 6 is characterized in that: The granular sludge regeneration device (6) is connected to a fresh water or recycled water replenishment pipe for replenishing fresh water to ensure water balance in the system; it is also connected to an N source, a P source and an alkalinity addition pipe for replenishing N, P and alkalinity to ensure the nutrients and environment required for the biochemical reaction of the granular sludge.

8. The high-salinity wastewater activated carbon adsorption granular sludge regeneration treatment system according to claim 7 is characterized in that: The granular sludge regeneration device (6) is provided with a filter screen for separating the granular sludge from the carbon-water mixture, so that the granular sludge is retained in the granular sludge regeneration device (6).

9. A method for regenerating activated carbon adsorbed granular sludge in high-salinity wastewater, the method being based on the system according to any one of claims 1 to 8, the method comprising the following steps: The high-salinity wastewater to be treated enters the regulating tank (1), the activated carbon adsorption tank (2), the carbon-water separation device (3), the deep treatment device (4), and the clean water tank (5) in sequence for water quality and quantity regulation, adsorption, separation and deep treatment, and the effluent meets the standards for discharge or reuse; The adsorption saturated activated carbon separated by the carbon-water separation device (3) enters the granular sludge regeneration device (6) for biological regeneration, and the regenerated activated carbon suspension enters the regenerated carbon-water separation device (7) for carbon-water separation; the regenerated activated carbon separated by the regenerated carbon-water separation device (7) is refluxed to the activated carbon adsorption tank (2) through the regenerated activated carbon reflux pipe for organic activated carbon adsorption; most of the purified water separated by the regenerated carbon-water separation device (7) is refluxed to the granular sludge regeneration device (6) through the circulating water pipe as circulating water for desorption of saturated activated carbon and providing a biochemical reaction environment, and a small part enters the deep treatment device (4) through the discharge water pipe for discharge or reuse after deep treatment, so as to prevent the accumulation of salt concentration in the granular sludge regeneration device (6).

10. The method for regenerating activated carbon adsorbed granular sludge in high-salinity wastewater according to claim 9, characterized in that: The hydraulic retention time of the regulating tank (1) is 4 to 24 hours; the hydraulic retention time of the activated carbon adsorption tank (2) is 0.5 to 3 hours; and the activated carbon retention time of the granular sludge regeneration device (6) is 6 to 240 hours.

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