CN103073088B - Continuous adsorption system for sewage treatment process - Google Patents

Abstract

The invention relates to a continuous adsorption system for a sewage treatment process. The continuous adsorption system comprises a primary adsorption device and a secondary adsorption device which are connected in series, wherein a secondary adsorption discharge pipe in the secondary adsorption device is connected to a primary adsorbent draft tube (40) through a discharge connecting pipe (30), and a primary adsorption water outlet pipe (31) is connected to a secondary adsorption water inlet pipe (16). Water flowing out of the primary adsorption device can directly enter the secondary adsorption device to be adsorbed, and can also enter the secondary adsorption device after entering other treatment processes. Meanwhile, a new absorbent is added to the secondary adsorption device, the saturated adsorbent by secondary adsorption can be lifted to the primary adsorption device to be used as an adsorbent to be continuously used so as to play a role of saving the adsorbent. The operation is simple, and the maintenance is convenient.

Description

Continuous Adsorption System for Sewage Treatment Process

technical field

The invention relates to an adsorption system in a sewage treatment process.

Background technique

The adsorption method is mainly used to remove trace pollutants in water, and the scope should include decolorization, deodorization, removal of various dissolved organic substances, etc. The adsorption method has the characteristics of wide application range, good treatment effect and recyclable useful materials.

In the traditional adsorption system, when the adsorption bed needs to be backwashed, the adsorption system cannot be fed with water, and can only be restored to the adsorption state after the backwashing is completed.

The traditional adsorption system needs to replace the adsorbent after the adsorption is saturated. When the adsorbent is replaced, the adsorption system cannot work normally, and it can only work normally after the replacement of the adsorbent is completed.

Contents of the invention

The problem to be solved by the present invention is to overcome the deficiencies of the prior art, overcome the working state that the traditional adsorption system must be shut down when backwashing and replacing the adsorbent, and design the continuous adsorption system of the sewage treatment process of the present invention to ensure normal water inflow , Under the premise of water discharge, backwashing operation can be performed, new adsorbent can be automatically added, and saturated adsorbent can be automatically discharged. Dosing of new adsorbents and automatic removal of adsorbents do not require manual loading and unloading.

The specific scheme of the present invention is: comprising a primary adsorption device and a secondary adsorption device connected in series;

The primary adsorption device includes a primary cylinder, a primary water distribution unit, a primary air lift unit, a primary backwash unit, a primary feeding unit, a primary adsorption bed, and a primary water outlet unit. The first-level water distribution unit includes a first-level adsorption water inlet pipe, the lower part of the first-level adsorption water inlet pipe is connected with a first-level adsorption water distribution cone, and a first-level adsorption water distribution plate is arranged on the first-level adsorption water distribution cone; The first-stage air lift unit includes the first-stage adsorption air-lift pump arranged at the bottom of the first-stage cylinder and the inlet pipe of the first-stage adsorption air-lift pump connected to it. The inlet pipe of the first-stage adsorption air-lift pump is connected outside the first-stage cylinder. The outlet of the airlift pump is connected to the primary adsorption discharge pipe to lift the saturated adsorbent from the bottom of the primary cylinder to the primary adsorption discharge pipe on the upper part of the device; the primary backwash unit includes a primary adsorption backwash inlet pipe, The first-level adsorption backwash cloth air pipe, the first-level adsorption backwash drain pipe and the first-level adsorption backwash drain valve; the first-level feed unit includes a discharge connecting pipe, a A first-level adsorbent diversion cylinder and a first-level adsorption distribution cone; the first-level water outlet unit includes a first-level adsorption water outlet weir and a first-level adsorption water outlet pipe arranged on the upper part of the cylinder;

The secondary adsorption device includes a secondary cylinder, a secondary water inlet and distribution unit, a secondary air lift unit, a secondary backwash unit, a secondary feeding unit, a secondary adsorption bed, and a secondary water outlet unit. The secondary water distribution unit described above includes a secondary adsorption water inlet pipe, the lower part of the secondary adsorption water inlet pipe is connected to a secondary adsorption water distribution cone, and a secondary adsorption water distribution plate is arranged on the secondary adsorption water distribution cone; The primary air lift unit includes a secondary adsorption air lift pump arranged at the bottom of the secondary cylinder and a secondary adsorption air lift pump inlet pipe connected to it. The secondary adsorption air lift pump intake pipe is connected outside the secondary cylinder, and the secondary adsorption air lift pump The outlet of the airlift pump is connected to the secondary adsorption discharge pipe to lift the saturated adsorbent from the bottom of the secondary cylinder to the discharge connection pipe on the upper part of the device; the secondary backwash unit includes a secondary adsorption backwash inlet pipe, a secondary Adsorption backwash cloth air pipe, secondary adsorption backwash water discharge pipe and secondary adsorption backwash drain valve; The fresh material guide sleeve on the first-stage adsorption discharge pipe, the second-stage adsorption fresh material guide cylinder and the second-stage adsorption distribution cone; the second-stage water outlet unit includes a second-stage adsorption outlet weir arranged on the upper part of the second-stage cylinder and secondary adsorption outlet pipe;

The discharge connecting pipe is connected to the first-stage adsorbent guide tube; the first-stage adsorption outlet pipe is connected to the second-stage adsorption water inlet pipe.

The system of the present invention adopts a two-stage series treatment process, and the water discharged from the primary adsorption device can directly enter the secondary adsorption device for adsorption, or can enter the secondary adsorption device after being treated by other treatment processes.

At the same time, a new adsorbent is added to the secondary adsorption device, and the saturated adsorbent of the secondary adsorption can be promoted to the primary adsorption device for continued use as an adsorbent, and the saturated adsorbent of the primary adsorption can be lifted to the waste pool and discharged out of the system .

Compared with prior art, the beneficial effect of the present invention is:

The system can normally enter and exit water during backwashing; the effluent from the primary adsorption device can directly enter the secondary adsorption device for further adsorption, the effluent from the primary adsorption device can enter other processing units, and the water from other units can enter the secondary adsorption device. It can be directly used in series, and other processing units can also be added to it; the system can work normally when adding and discharging adsorbent; the primary adsorption device can use the saturated adsorbent in the secondary adsorption device to save the adsorbent ;Simple operation and convenient maintenance; quantitative dosing and discharge of adsorbent can be realized.

Description of drawings

Fig. 1 is a schematic diagram of the system principle of the present invention;

Fig. 2 is the top view of the primary backwash unit of the primary adsorption device of the present invention;

Fig. 3 is the elevation view of the primary water distribution unit of the primary adsorption device of the present invention;

Fig. 4 is a top view of the primary water distribution unit of the primary adsorption device of the present invention.

illustration:

In the figure: 1. First-level adsorption water inlet pipe, 2. First-level adsorption air lift pump inlet pipe, 3. First-level adsorption discharge pipe, 4. First-level adsorption backwash inlet pipe, 5. First-level adsorption backwash cloth air pipe , 6. First-level adsorption water distribution plate, 7. First-level adsorption water distribution cone, 8. First-level adsorption air lift pump, 9. First-level adsorption emptying pipe, 10. Total emptying pipe, 11. Secondary adsorption exhaust Empty pipe, 12, secondary adsorption air lift pump, 13, secondary adsorption water distribution cone, 14, secondary adsorption water distribution plate, 15, secondary adsorption backwash cloth air pipe, 16, secondary adsorption water inlet pipe, 17, Secondary adsorption air lift pump inlet pipe, 18. Secondary adsorption backwash inlet pipe, 19. Secondary adsorption discharge pipe, 20. Secondary adsorption cloth cone, 21. Secondary adsorption water outlet pipe, 22. Secondary adsorption water outlet Weir, 23, secondary adsorption new material guide tube, 24, new material conveying deceleration motor, 25, new material conveying shaft, 26, new material guide sleeve, 27, new hopper, 28, other processing unit outlet pipes, 29. Other processing units, 30. Discharge connecting pipe, 31. First-level adsorption outlet pipe, 32. First-level adsorption weir, 33. Backwash water discharge main pipe, 34. First-level adsorption discharge pipe, 35. First-level Adsorption backwash drainage pipe, 36, secondary adsorption bed, 37, primary adsorption bed, 38, primary adsorption cloth cone, 39, secondary adsorption backwash water discharge pipe, 40, primary adsorbent guide tube, 41 , Secondary adsorption backwash drain valve, 42, Primary adsorption backwash drain valve.

Detailed ways

As shown in the figure, the technical solution of this embodiment is as follows,

A continuous adsorption system for a sewage treatment process, comprising a primary adsorption device and a secondary adsorption device connected in series;

The primary adsorption device includes a primary cylinder, a primary water distribution unit, a primary air lift unit, a primary backwash unit, a primary feeding unit, a primary adsorption bed 37, and a primary water outlet unit. The first-level water distribution unit includes a first-level adsorption water inlet pipe 1, the lower part of the first-level adsorption water inlet pipe 1 is connected with a first-level adsorption water distribution cone 7, and a first-level adsorption water distribution plate is arranged on the first-level adsorption water distribution cone 7 6. The primary airlift unit includes a primary adsorption airlift pump 8 arranged at the bottom of the primary cylinder and a primary adsorption airlift pump intake pipe 2 connected to it, and the primary adsorption airlift pump intake pipe 2 is connected to Out of the primary cylinder, the outlet of the primary adsorption airlift pump 8 is connected to the primary adsorption discharge pipe 3 to lift the saturated adsorbent from the bottom of the primary cylinder to the primary adsorption discharge pipe 34 on the upper part of the device;

The first-level backwash unit includes a first-level adsorption backwash intake pipe 4, a first-level adsorption backwash cloth air pipe 5, a first-level adsorption backwash drain pipe 35 and a first-level adsorption backwash drain valve 42; The feeding unit includes a discharge connecting pipe 30, a primary adsorbent guide tube 40 nested on the primary adsorption discharge pipe 3, and a primary adsorption distribution cone 38; the primary water outlet unit includes The upper primary adsorption outlet weir 32 and the primary adsorption outlet pipe 31;

The secondary adsorption device includes a secondary cylinder, a secondary water inlet distribution unit, a secondary air lift unit, a secondary backwash unit, a secondary feeding unit, a secondary adsorption bed 36, and a secondary water outlet unit, The secondary water inlet distribution unit includes a secondary adsorption water inlet pipe 16, the lower part of the secondary adsorption water inlet pipe 16 is connected to a secondary adsorption water distribution cone 13, and a secondary adsorption water distribution plate is arranged on the secondary adsorption water distribution cone 13 14. The secondary airlift unit includes a secondary adsorption airlift pump 12 arranged at the bottom of the secondary cylinder and a secondary adsorption airlift pump intake pipe 17 connected to it, and the secondary adsorption airlift pump intake pipe 17 is connected to Out of the secondary cylinder, the outlet of the secondary adsorption airlift pump 12 is connected to the secondary adsorption discharge pipe 19 to lift the saturated adsorbent from the bottom of the secondary cylinder to the discharge connecting pipe 30 on the upper part of the device; the secondary backwashing The unit includes a secondary adsorption backwash intake pipe 18, a secondary adsorption backwash cloth air pipe 15, a secondary adsorption backwash water discharge pipe 39, and a secondary adsorption backwash drain valve 42; the secondary feed unit includes a new hopper 27. Fresh material delivery deceleration motor 24, new material delivery shaft 25, new material guide sleeve 26 nested on the secondary adsorption discharge pipe 19, secondary adsorption new material guide tube 23 and secondary adsorption distribution cone 20. The secondary water outlet unit includes a secondary adsorption water outlet weir 22 and a secondary adsorption water outlet pipe 21 arranged on the upper part of the secondary cylinder;

The discharge connecting pipe 30 is connected to the first-stage adsorption guide tube 40 ; the first-stage adsorption outlet pipe 31 is connected to the second-stage adsorption water inlet pipe 16 .

Other processing units 29 are arranged between the primary adsorption water outlet pipe 31 and the secondary adsorption water inlet pipe 16 , and the other processing units 29 are connected to the secondary adsorption water inlet pipe 16 through the water outlet pipe 28 of other processing units. The other treatment units 29 here refer to, for example, biochemical system treatment units, chemical oxidation units, and the like.

The primary cylinder and the bottom of the secondary cylinder are respectively provided with a primary adsorption evacuation pipe 9 and a secondary adsorption evacuation pipe 11 and are collected into the main evacuation pipe 10 .

The secondary adsorption backwash water drainage pipe 39 , the secondary adsorption backwash drainage valve 41 , the primary adsorption backwash drainage pipe 35 , and the primary adsorption backwash drainage valve 42 are all connected to the backwash water discharge main pipe 33 .

In the first-level water distribution unit, there is a water outlet on the first-level adsorption water distribution cone 7, and the water outlet is connected to the first-level adsorption water distribution plate 6. The interior of the first-level adsorption water distribution plate 6 is hollow, and there is sewage at the bottom. Outlet: Sewage enters the interior of the first-level adsorption water distribution plate 6 from the first-level adsorption water distribution cone 7 and is discharged from the lower opening of the first-level adsorption water distribution plate 6. There is no water outlet on each side, so that the sewage is discharged from the lower opening of the first-level adsorption water distribution plate to make the water distribution more uniform, which is conducive to adsorption, and the first-level water inlet water distribution unit is not easy to block. In the secondary water inlet distribution unit, there is a water outlet on the secondary adsorption water distribution cone 13, and the water outlet is connected to the secondary adsorption water distribution plate 14. The secondary adsorption water distribution plate 14 is hollow inside, and there is sewage in the lower part exit.

In the first-level backwash unit, the first-level adsorption backwash drainage pipe 35 is connected to the first-level adsorbent guide tube 40; the first-level adsorption backwash intake pipe 4 is connected to the first-level adsorption backwash cloth through the first-level adsorption air distribution ring Trachea 5, gas distribution evenly. That is, when the primary adsorption bed of the primary adsorption device is backwashed, the adsorbent in the discharge connecting pipe 30 stops feeding, and the compressed air enters the primary adsorption backwash cloth air pipe 5 through the primary adsorption backwash inlet pipe 4, From the distribution air holes in the first-stage adsorption backwashing air pipe to the bottom of the first-stage adsorption bed, the compressed air will wash off the suspended solids adhering to the surface of the adsorbent from the adsorbent, and the suspended solids that are backwashed will be from bottom to top As the backwash water enters the primary adsorbent material guide cylinder, it then enters the primary adsorption backwash water pipe 35 to be discharged. In the described secondary backwash unit, the secondary adsorption backwash discharge pipe 39 is followed by the secondary adsorption new material guide tube 23; the secondary adsorption backwash intake pipe 18 is connected to the secondary adsorption backwash through the secondary adsorption air distribution ring Air distribution pipe 15.

The first-level adsorption discharge pipe 3 is nested with a first-level adsorbent guide tube 40, a first-level adsorption distribution cone 38, a first-level adsorption air distribution ring, and a first-level adsorption water distribution cone 7 from top to bottom; The above-mentioned secondary adsorption discharge pipe 19 is successively nested with a new material guide sleeve 26, a secondary adsorption new material guide tube 23, a secondary adsorption distribution cone 20, a secondary adsorption air distribution ring, Secondary adsorption water distribution cone 13;

The height of the upper edge of the first-stage adsorption outlet weir 32 arranged on the first-stage cylinder body is higher than the height of the lower end surface of the first-stage adsorbent guide cylinder 40; The height of the lower end surface of the new material guide cylinder 23 is absorbed.

The air intake pipe 2 of the primary adsorption air lift pump and the air intake pipe 17 of the secondary adsorption air lift pump are respectively connected with compressed air devices.

In the sewage treatment process of the system of the present invention, the water output from the primary adsorption device can directly enter the secondary adsorption device for adsorption, or can enter the secondary adsorption device after being treated by other treatment processes. At the same time, the new adsorbent is automatically added to the secondary adsorption device, and the saturated adsorbent of the secondary adsorption can be promoted to the primary adsorption device to continue to be used as an adsorbent, and the saturated adsorbent of the primary adsorption can be promoted to the discharge system in the waste pool outside.

As shown in the figure, the working process of the system of the present invention in the production process is as follows, the sewage first enters the primary adsorption water inlet pipe 1, and the sewage flows from the primary adsorption water inlet pipe 1 through the primary adsorption cloth water cone 7 into the primary adsorption cloth The water plate 6, the sewage is evenly distributed in the primary cylinder body from the primary adsorption water distribution plate 6, and the adsorbed sewage flows upward through the primary adsorption bed 37 to the primary adsorption weir 32, and the effluent after adsorption is discharged by the primary adsorption The water pipe 31 is discharged into other processing units 29. If no other processing units 29 are set, the first-stage adsorption outlet water enters the second-stage adsorption water inlet pipe 16. If other processing units 29 are set, the water outlet pipe 28 of other processing units is discharged from the second-stage adsorption inlet. The water pipe 16 flows into the secondary adsorption water distribution plate 14 through the secondary adsorption water distribution cone 13, and the sewage is evenly distributed in the secondary cylinder from the secondary adsorption water distribution plate 14, and the adsorbed sewage flows upward through the secondary adsorption bed 36 To the secondary adsorption outlet weir 22, the outlet water flows out through the secondary adsorption outlet pipe 21 after the secondary adsorption.

The adsorbent stored in the new hopper 27 is periodically sent to the new material guide sleeve 26 through the new material delivery reduction motor 24, and the new material delivery shaft 25, and the new material passes through the guide sleeve through the secondary adsorption new material guide. The flow tube 23 is evenly distributed into the secondary adsorption bed through the secondary adsorption distribution cone 20 . The saturated adsorbent passes through the secondary adsorption airlift pump 12 through the secondary adsorption discharge pipe 19, and the discharge connecting pipe 30 enters the primary adsorbent guide tube 40, and the adsorbent is uniformly distributed in the primary adsorption distribution cone 38. in the primary adsorption bed. The saturated adsorbent in the primary adsorption bed is sent to the primary adsorption discharge pipe 34 through the primary adsorption airlift pump 8 through the primary adsorption discharge pipe 34 to be discharged out of the primary cylinder.

The intake pipe 2 of the primary adsorption air lift pump provides compressed air for the primary adsorption air lift pump 8 as the power for the lifting of the adsorbent. The primary adsorption backwash inlet pipe 4 is connected with the primary adsorption backwash cloth air pipe 5 to provide compressed air for the primary adsorption bed backwash. The intake pipe 17 of the secondary adsorption air lift pump provides compressed air for the secondary adsorption air lift pump 12 as the power for the adsorbent to lift. The secondary adsorption backwash inlet pipe 18 and the secondary adsorption backwash cloth air pipe 15 provide compressed air for the secondary adsorption bed backwash. The backwash water produced in the backwashing process of the primary adsorption bed is discharged to the backwash drainage main pipe 33 through the primary adsorption backwash drain pipe 35 and the primary adsorption backwash drain valve 42, and the backwash water produced in the secondary adsorption bed backwashing process is The secondary adsorption backwash drain pipe 39 and the secondary adsorption backwash drain valve 41 are discharged to the backwash water discharge main pipe 33, and the backwash water discharge main pipe 33 is discharged to the pre-processing device. The primary adsorption emptying pipe 9 is connected with the secondary adsorption emptying pipe 11 and the main emptying pipe 10 .

The present invention is not limited to the above-mentioned embodiments, and any equivalent ideas or changes within the technical scope disclosed in the present invention are listed in the protection scope of the present invention.

Claims (9)

1. A continuous adsorption system of sewage treatment process, characterized in that: comprising a primary adsorption device and a secondary adsorption device connected in series; The primary adsorption device includes a primary cylinder, a primary water distribution unit, a primary air lift unit, a primary backwash unit, a primary feeding unit, a primary adsorption bed (37), a primary water outlet unit, the first-level water distribution unit includes a first-level adsorption water inlet pipe (1), the lower part of the first-level adsorption water inlet pipe (1) is connected to the first-level adsorption water distribution cone (7), and the first-level adsorption water distribution cone ( 7) A first-level adsorption water distribution plate (6) is arranged on the top; the first-level air lift unit includes a first-level adsorption air lift pump (8) arranged at the bottom of the first-level cylinder and a first-level adsorption air lift pump connected to it The inlet pipe (2), the inlet pipe (2) of the first-stage adsorption airlift pump is connected to the outside of the first-stage cylinder, and the outlet of the first-stage adsorption airlift pump (8) is connected to the first-stage adsorption discharge pipe (3) to remove the saturated adsorbent from the first-stage The bottom of the first-stage cylinder body is lifted to the first-stage adsorption discharge pipe (34) on the upper part of the device; the first-stage backwash unit includes a first-stage adsorption backwash inlet pipe (4), a first-stage adsorption backwash cloth air pipe (5), The primary adsorption backwash drain pipe (35) and the primary adsorption backwash drain valve (42); the primary feed unit includes a discharge connecting pipe (30), nested in the primary adsorption discharge pipe (3 ) on the primary adsorbent flow guide tube (40) and the primary adsorption cloth cone (38); the primary water outlet unit includes a primary adsorption outlet weir (32) and a primary adsorption outlet weir (32) arranged on the top of the cylinder body water pipe (31); The secondary adsorption device includes a secondary cylinder, a secondary water inlet distribution unit, a secondary air lift unit, a secondary backwash unit, a secondary feed unit, a secondary adsorption bed (36), and a secondary water outlet unit. unit, the secondary water inlet distribution unit includes a secondary adsorption water inlet pipe (16), the bottom of the secondary adsorption water inlet pipe (16) is connected to the secondary adsorption water distribution cone (13), and the secondary adsorption water distribution cone (13) 13) A secondary adsorption water distribution plate (14) is arranged on the top; the secondary air lift unit includes a secondary adsorption air lift pump (12) arranged at the bottom of the secondary cylinder and a secondary adsorption air lift pump connected to it Intake pipe (17), the secondary adsorption air lift pump intake pipe (17) is connected outside the secondary cylinder, and the secondary adsorption air lift pump (12) outlet is connected to the secondary adsorption discharge pipe (19) to remove the saturated adsorbent from the secondary cylinder. The bottom of the stage cylinder is lifted to the discharge connection pipe (30) on the top of the device; the secondary backwash unit includes a secondary adsorption backwash inlet pipe (18), a secondary adsorption backwash cloth air pipe (15), a secondary Adsorption backwash water discharge pipe (39) and secondary adsorption backwash drain valve (41); described secondary feed unit includes new hopper (27), new material conveying deceleration motor (24), new material conveying shaft ( 25), the new material guide sleeve (26) nested on the secondary adsorption discharge pipe (19), the secondary adsorption fresh material guide tube (23) and the secondary adsorption cloth cone (20); The secondary water outlet unit includes a secondary adsorption outlet weir (22) and a secondary adsorption outlet pipe (21) arranged on the upper part of the secondary cylinder; The discharge connecting pipe (30) is connected to the first-stage adsorption guide tube (40); the first-stage adsorption outlet pipe (31) is connected to the second-stage adsorption water inlet pipe (16). the 2. The continuous adsorption system of a sewage treatment process as claimed in claim 1, characterized in that: other treatment units ( 29), other treatment units (29) are connected to the secondary adsorption water inlet pipe (16) by other treatment unit outlet pipes (28). the 3. The continuous adsorption system of a sewage treatment process as claimed in claim 1 or 2, characterized in that: the bottom of the primary cylinder and the secondary cylinder are respectively provided with a primary adsorption emptying pipe (9) and a secondary adsorption Empty pipe (11) and join to main empty pipe (10). the 4. The continuous adsorption system of a sewage treatment process as claimed in claim 1 or 2, characterized in that: the secondary adsorption backwash water drainage pipe (39) and the primary adsorption backwash drainage pipe (35) are connected to Backwash water discharge main (33). the 5. The continuous adsorption system of a sewage treatment process according to claim 1, characterized in that: the first-stage adsorption water distribution cone (7) in the first-stage water inlet and distribution unit has a water outlet, and the outlet The nozzle is connected to the first-level adsorption water distribution plate (6), and the first-level adsorption water distribution plate (6) is hollow inside, and the lower part has a sewage outlet; the second-level adsorption water distribution cone (13 ) is provided with a water outlet, the water outlet is connected to the secondary adsorption water distribution plate (14), the secondary adsorption water distribution plate (14) is hollow inside, and the bottom part has a sewage outlet. the 6. The continuous adsorption system of a sewage treatment process according to claim 1, characterized in that: in the first-level backwash unit, the first-level adsorption backwash drainage pipe (35) is followed by the first-level adsorbent diversion cylinder (40); the first-level adsorption backwash air intake pipe (4) is connected to the first-level adsorption backwash cloth air pipe (5) through the first-level adsorption air distribution ring; in the second-level backwash unit, the second-level adsorption backwash discharge Pipe (39) is followed by secondary adsorption new material guide tube (23); secondary adsorption backwash air inlet pipe (18) is connected secondary adsorption backwash cloth air pipe (15) by secondary adsorption air distribution ring. the 7. The continuous adsorption system of a sewage treatment process according to claim 1, characterized in that: the first-stage adsorption discharge pipe (3) is nested with a first-stage adsorbent guide tube sequentially from top to bottom (40), the primary adsorption distribution cone (38), the primary adsorption air distribution ring, and the primary adsorption water distribution cone (7); the secondary adsorption discharge pipe (19) is nested sequentially from top to bottom There are new material guide sleeve (26), secondary adsorption fresh material guide tube (23), secondary adsorption cloth cone (20), secondary adsorption air distribution ring, secondary adsorption water distribution cone (13). the 8. The continuous adsorption system of a sewage treatment process according to claim 1, characterized in that: the height of the upper edge of the first-stage adsorption outlet weir (32) arranged on the first-stage cylinder body is higher than that of the first-stage adsorbent guide cylinder (40) The height of the lower end surface; the height of the upper edge of the secondary adsorption outlet weir (22) arranged on the secondary cylinder body is greater than the height of the lower end surface of the secondary adsorption fresh material guide tube (23). the 9. The continuous adsorption system of a sewage treatment process according to claim 1, characterized in that: the inlet pipe (2) of the first-stage adsorption air-lift pump and the inlet pipe (17) of the second-stage adsorption air-lift pump are respectively Connect the compressed air unit. the

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