Anaerobic and aerobic combined sludge contact adsorption system and method thereof

Abstract

The invention discloses an anaerobic-aerobic combined sludge contact adsorption system, which comprises a separation area (1) for stirring a first treatment liquid A, a second treatment liquid B and a third treatment liquid C generated by sewage through a filter membrane, and an analysis area (2) for separating and precipitating a fourth treatment liquid D to generate a fifth treatment liquid E and a sixth treatment liquid F, the anaerobic biochemical region (3) is used for carrying out anaerobic biochemical reaction on the fifth treatment liquid E to generate the seventh treatment liquid G; the AO biochemical area (4) is used for carrying out anaerobic / aerobic biochemical treatment on the sixth treated liquid F and the first treated liquid A to generate eighth treated liquid H; and the adsorption strengthening area (5) is used for carrying out aeration reaction on the eighth treated liquid H to generate ninth treated liquid J and sludge. According to the anaerobic and aerobic combined sludge contact adsorption system provided by the invention, the sludge is effectively treated by stages, so that the sludge treatment effect can be improved.

Description

Technical Field

[0001] The invention relates to the technical field of sludge treatment, and in particular to an anaerobic-aerobic combined sludge contact adsorption system and a method thereof. Background Art

[0002] Sludge treatment is the process of reducing, stabilizing and harmlessly treating sludge. The higher the degree of wastewater treatment, the more sludge residue that needs to be treated. Unless land treatment or sewage pools are used to treat sewage, general sewage treatment plants must be equipped with sludge treatment facilities. For modern sewage treatment plants, sludge treatment and disposal has become the most complex and costly part of the sewage treatment system operation. Sludge has different types according to its source, and the corresponding treatment methods are also different. Among them, the sludge generated in the garbage disposal process is the most difficult to treat.

[0003] Application number CN201710771202.X discloses a device for anaerobic ammonia oxidation denitrification process enhanced by sludge segmented reflow, which is a continuous flow reactor including a raw water storage tank, an inlet pump, a biochemical reactor, and a sedimentation tank, and the continuous flow reactor is connected to a PLC controller. The biochemical reactor includes an anaerobic zone, an aerobic zone, and an anoxic zone. The urban sewage raw water tank is connected to the inlet pipe of the biochemical reactor through the inlet pump, and the sewage passes through the anaerobic zone, aerobic zone, anoxic zone, and sedimentation tank connected in sequence through the inlet pipe. After the sedimentation tank is separated from the mud and water, the supernatant is discharged as effluent. In the anaerobic zone, the activated sludge adsorbs and degrades the organic matter in the influent to synthesize the internal carbon source; in the aerobic zone, by controlling the dissolved oxygen, the coupling of short-range denitrification and anaerobic ammonia oxidation is achieved, thereby improving the total nitrogen removal rate of the system. Summary of the invention

[0004] The present invention aims to overcome the technical problem that sludge generated in the garbage disposal process in the prior art is difficult to treat, and provides an anaerobic and aerobic combined sludge contact adsorption system and method thereof, which can improve the treatment effect of the sludge by effectively treating the sludge in stages.

[0005] The present invention provides an anaerobic and aerobic combined sludge contact adsorption system, comprising:

[0006] Stirring and separation zone: the inlet is connected to the anaerobic biochemical zone and the adsorption enhancement zone, and the outlet is connected to the decomposition zone, the AO biochemical zone, and the Fenton reactor, used to generate the first treatment liquid A, the second treatment liquid B, and the third treatment liquid C through the sewage through the filtration membrane, used to transmit the first treatment liquid A to the AO biochemical zone, used to transmit the second treatment liquid B to the Fenton reactor, used to receive the fifth treatment liquid G transmitted from the anaerobic biochemical zone, used to receive the ninth treatment liquid J transmitted from the adsorption enhancement zone, used to stir and mix the fifth treatment liquid G, the ninth treatment liquid J, and the third treatment liquid C to generate the fourth treatment liquid D, and used to transmit the fourth treatment liquid D to the decomposition zone;

[0007] Decomposition zone: the inlet is connected to the stirring and separation zone, and the outlet is connected to the anaerobic biochemical zone and the AO biochemical zone, for receiving the fourth treatment liquid D transmitted by the stirring and separation zone, for separating and precipitating the fourth treatment liquid D to generate the fifth treatment liquid E and the sixth treatment liquid F, for transmitting the fifth treatment liquid E to the anaerobic biochemical zone, and for transmitting the sixth treatment liquid F to the AO biochemical zone;

[0008] Anaerobic biochemical zone: the inlet is connected to the decomposition zone, and the outlet is connected to the stirring and separation zone, for receiving the fifth treatment liquid E transmitted from the decomposition zone, for performing an anaerobic biochemical reaction on the fifth treatment liquid E to generate the seventh treatment liquid G, and for transmitting the seventh treatment liquid G to the stirring and separation zone;

[0009] AO biochemical zone: the inlet is connected to the decomposition zone and the stirring and separation zone, and the outlet is connected to the adsorption enhancement zone, and is used to receive the sixth treatment liquid F transmitted from the decomposition zone, and the first treatment liquid A transmitted from the receiving separation and stirring zone, and is used to perform anaerobic / aerobic biochemical treatment on the sixth treatment liquid F and the first treatment liquid A to generate the eighth treatment liquid H, and is used to transmit the eighth treatment liquid H to the adsorption enhancement zone;

[0010] Adsorption enhancement zone: the inlet is connected to the AO biochemical zone, and the outlet is connected to the stirring and separation zone, for receiving the eighth treatment liquid H transmitted from the AO biochemical zone, for aerating the eighth treatment liquid H to generate the ninth treatment liquid J and sludge, for transmitting the ninth treatment liquid J to the stirring and separation zone, and for discharging the sludge.

[0011] The anaerobic-aerobic combined sludge contact adsorption system described in the present invention is preferably provided with a first sludge lifting pump in the decomposition zone, and the first sludge lifting pump is used to transfer the sixth treatment liquid F to the AO biochemical zone.

[0012] The anaerobic-aerobic combined sludge contact adsorption system described in the present invention is preferably provided with a second sludge lifting pump in the adsorption enhancement zone, and the second sludge lifting pump is used to transfer the ninth treatment liquid J to the stirring and separation zone.

[0013] The anaerobic-aerobic combined sludge contact adsorption system described in the present invention is preferably provided with an axial flow pump in the stirring and separation zone, and the axial flow pump is used to transfer the fourth treatment liquid D to the decomposition zone.

[0014] The anaerobic-aerobic combined sludge contact adsorption system described in the present invention is preferably provided with a liquid storage tank in the stirring and separation zone for storing and mixing the fifth treatment liquid G, the ninth treatment liquid J, and the third treatment liquid C.

[0015] The anaerobic-aerobic combined sludge contact adsorption system described in the present invention is, as a preferred embodiment, a decomposition zone on one side is connected to a side of an adsorption enhancement zone, and a plurality of filler mold assemblies are provided on the other side of the decomposition zone and the other side of the adsorption enhancement zone. The decomposition zone, the adsorption enhancement zone and the filler mold assembly form a cylindrical structure, and a partition is provided at the connection between the decomposition zone and the adsorption enhancement zone.

[0016] The method for using the anaerobic-aerobic combined sludge contact adsorption of the present invention comprises the following steps:

[0017] S1, stirring and separation: the sewage enters the stirring and separation zone and generates the first treatment liquid A, the second treatment liquid B and the third treatment liquid C through the filtration membrane, the first treatment liquid A is transmitted to the AO biochemical zone, and the second treatment liquid B is transmitted to the Fenton reactor;

[0018] S2, mixing: the third treatment liquid C, the fifth treatment liquid G transmitted from the anaerobic biochemical zone, and the ninth treatment liquid J transmitted from the adsorption enhancement zone are stirred and mixed to generate the fourth treatment liquid D, and then transmitted to the decomposition zone through an axial flow pump;

[0019] S3, analytical separation: the fourth treatment liquid D is analytically separated in the analytical zone, the upper layer forms the fifth treatment liquid E, the lower layer forms the sixth treatment liquid F, the fifth treatment liquid E is transferred to the anaerobic biochemical zone, and the sixth treatment liquid F is transferred to the AO biochemical zone;

[0020] S4, anaerobic biochemical reaction: performing anaerobic biochemical reaction on the fifth treated liquid E to generate a seventh treated liquid G, and transferring the seventh treated liquid G back to the stirring and separation zone;

[0021] S5, AO biochemical reaction: performing anaerobic / aerobic biochemical treatment on the sixth treated liquid F and the first treated liquid A to generate an eighth treated liquid H, and transferring the eighth treated liquid H to the adsorption enhancement zone;

[0022] S6. Aeration: The eighth treated liquid H is subjected to an aeration reaction in the adsorption enhancement zone to generate a ninth treated liquid J and sludge, and the ninth treated liquid J is transferred to the stirring and separation zone to discharge the sludge.

[0023] The method for using the anaerobic-aerobic combined sludge contact adsorption system of the present invention is preferably configured such that the sixth treatment liquid F is cooled during the process of transferring the sixth treatment liquid F from the decomposition zone to the AO biochemical zone in step S3.

[0024] In the method for using the anaerobic-aerobic combined sludge contact adsorption system of the present invention, as a preferred embodiment, the flow rate of the axial flow pump is greater than the flow rate of the fifth treatment liquid E transmitted from the decomposition zone to the anaerobic biochemical zone.

[0025] The method for using the anaerobic-aerobic combined sludge contact adsorption system described in the present invention is, as a preferred embodiment, that the ratio of the sludge discharge flow rate to the ninth treatment liquid J transmitted from the adsorption enhancement zone to the stirring and separation zone is 1:3.

[0026] During use of the present invention, sewage first passes through a filter membrane in a stirring and separation device to separate organic matter in the sewage and transmit it to a Fenton reactor. The remaining part is then separated by a membrane, and the ammonia-containing part is transmitted to the AO biochemical zone. The remaining liquid part is mixed with the liquids transmitted back from the anaerobic biochemical zone and the adsorption enhancement zone, and then stirred evenly and enters the decomposition zone together; alkali is added in the decomposition zone to adjust the pH to 8-10, and after stratification, the upper part of the liquid is transmitted to the anaerobic biochemical zone for anaerobic reaction, and the lower part of the liquid is transmitted to the AO biochemical zone; after the anaerobic biochemical reaction in the anaerobic biochemical zone, the complex organic matter is decomposed into simple organic matter (such as organic acids, alcohols, etc.) and sent back to the separation and stirring zone; in the AO biochemical zone, the simple organic matter is further decomposed into CO 2 and H 2 O, the remaining sludge is conveyed to the adsorption enhancement zone together with the liquid; in the enhanced adsorption zone, the oxidizable organic matter in the sewage is further decomposed by aeration, and the solid part that cannot be decomposed is discharged as sludge, and the remaining liquid is returned to the stirring and separation device to dilute the sewage and carry out secondary circulation treatment.

[0027] The present invention has the following advantages:

[0028] (1) The decomposable organic matter in the sewage can be decomposed through the anaerobic biochemical zone, AO biochemical zone, decomposition zone and enhanced adsorption zone, which can improve the decomposition efficiency of organic matter;

[0029] (2) Returning the drainage in the adsorption enhancement zone to the treatment system can dilute the sewage, improve the sewage treatment effect and effectively prevent blockage caused by excessive solid matter in the sewage;

[0030] (3) The drainage in the adsorption enhancement area is returned to the treatment system, which can be recycled to improve the treatment effect of sewage. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 This is a composition diagram of an anaerobic-aerobic combined sludge contact adsorption system;

[0032] Figure 2 It is a top view of the decomposition area and enhanced adsorption area of ​​an anaerobic-aerobic combined sludge contact adsorption system;

[0033] Figure 3 It is a schematic diagram of the composition of the decomposition zone and the enhanced adsorption zone of an anaerobic-aerobic combined sludge contact adsorption system;

[0034] Figure 4 The present invention is a flow chart of the method for using an anaerobic-aerobic combined sludge contact adsorption system.

[0035] Reference numerals:

[0036] 1. Stirring and separation zone; 2. Analysis zone; 3. Anaerobic biochemical zone; 4. AO biochemical zone; 5. Adsorption enhancement zone; 6. First lifting pump; 7. Second lifting pump; 8. Axial flow pump; 9. Liquid storage tank; 10. Filling mold assembly. DETAILED DESCRIPTION

[0037] Example 1

[0038] like Figure 1 As shown, an anaerobic and aerobic combined sludge contact adsorption system comprises:

[0039] Stirring and separation zone 1: the inlet is connected to the anaerobic biochemical zone 3 and the adsorption enhancement zone 5, and the outlet is connected to the decomposition zone 2, the AO biochemical zone 4, and the Fenton reactor, and is used to generate the first treatment liquid A, the second treatment liquid B and the third treatment liquid C through the sewage through the filtration membrane, and is used to transmit the first treatment liquid A to the AO biochemical zone 4, and is used to transmit the second treatment liquid B to the Fenton reactor, and is used to receive the fifth treatment liquid G transmitted from the anaerobic biochemical zone 3, and is used to receive the ninth treatment liquid J transmitted from the adsorption enhancement zone 5, and is used to stir and mix the fifth treatment liquid G, the ninth treatment liquid J, and the third treatment liquid C to generate the fourth treatment liquid D, and is used to transmit the fourth treatment liquid D to the decomposition zone 2; an axial flow pump 8 is provided in the stirring and separation zone 1, and the axial flow pump 8 is used to transmit the fourth treatment liquid D to the decomposition zone 2; a liquid storage tank 9 is provided in the stirring and separation zone, and is used to store and mix the fifth treatment liquid G, the ninth treatment liquid J, and the third treatment liquid C;

[0040] Analysis zone 2: the inlet is connected to the stirring and separation zone 1, and the outlet is connected to the anaerobic biochemical zone 3 and the AO biochemical zone 4, for receiving the fourth treatment liquid D transmitted by the stirring and separation zone, for separating and precipitating the fourth treatment liquid D to generate the fifth treatment liquid E and the sixth treatment liquid F, for transmitting the fifth treatment liquid E to the anaerobic biochemical zone 3, and for transmitting the sixth treatment liquid F to the AO biochemical zone 4; a first sludge lifting pump 6 is provided in the analysis zone 2, and the first sludge lifting pump 6 is used to transmit the sixth treatment liquid F to the AO biochemical zone 4;

[0041] Anaerobic biochemical zone 3: the inlet is connected to the desorption zone 2, and the outlet is connected to the stirring and separation zone 1, for receiving the fifth treatment liquid E transmitted from the desorption zone 2, for performing an anaerobic biochemical reaction on the fifth treatment liquid E to generate the seventh treatment liquid G, and for transmitting the seventh treatment liquid G to the stirring and separation zone 1;

[0042] AO biochemical zone 4: the inlet is connected to the decomposition zone 2 and the stirring and separation zone 1, and the outlet is connected to the adsorption enhancement zone 5, for receiving the sixth treatment liquid F transmitted from the decomposition zone 2, and for receiving the first treatment liquid A transmitted from the separation and stirring zone 1, for performing anaerobic / aerobic biochemical treatment on the sixth treatment liquid F and the first treatment liquid A to generate the eighth treatment liquid H, and for transmitting the eighth treatment liquid H to the adsorption enhancement zone 5;

[0043] Adsorption enhancement zone 5: the inlet is connected to AO biochemical zone 4, the outlet is connected to stirring and separation zone 1, for receiving the eighth treatment liquid H transmitted by AO biochemical zone 4, for aerating the eighth treatment liquid H to generate ninth treatment liquid J and sludge, for transmitting the ninth treatment liquid J to stirring and separation zone 1, for discharging the sludge; a second sludge lifting pump 7 is provided in the adsorption enhancement zone 5, and the second sludge lifting pump 7 is used to transmit the ninth treatment liquid J to the stirring and separation zone 1;

[0044] like Figures 2-3 As shown, one side of the decomposition zone 2 is connected to one side of the adsorption enhancement zone 5, and a plurality of filler mold assemblies 10 are provided on the other side of the decomposition zone 2 and the other side of the adsorption enhancement zone 5. The decomposition zone 2, the adsorption enhancement zone 5 and the filler mold assembly 10 form a cylindrical structure, and a partition is provided at the connection between the decomposition zone 2 and the adsorption enhancement zone 5.

[0045] like Figure 4 As shown, a method for using an anaerobic-aerobic combined sludge contact adsorption system comprises the following steps:

[0046] S1, stirring and separation: The sewage enters the stirring and separation zone 1 and generates the first treatment liquid A, the second treatment liquid B and the third treatment liquid C through the filtration membrane. The first treatment liquid A is transmitted to the AO biochemical zone 4 with a flow rate of 15m 3 / h, and the second treated liquid B is delivered to the Fenton reactor at a flow rate of 15m 3 / h;

[0047] S2, mixing: the third treatment liquid C, the fifth treatment liquid G transmitted from the anaerobic biochemical zone, and the ninth treatment liquid J transmitted from the adsorption enhancement zone 5 are stirred and mixed to generate the fourth treatment liquid D, and then transmitted to the desorption zone 2 through the axial flow pump 8, with a flow rate of 45m 3 / h;

[0048] S3, analysis and separation: In the analysis zone 4, the fourth treatment liquid D is analyzed and separated to form the fifth treatment liquid E in the upper layer and the sixth treatment liquid F in the lower layer. The fifth treatment liquid E is transferred to the anaerobic biochemical zone 3 at a flow rate of 30m 3 / h, and deliver the sixth treated liquid F to the AO biochemical zone 4 at a flow rate of 15m 3 / h; cooling the sixth treatment liquid F during the process of transferring the sixth treatment liquid F from the decomposition zone 2 to the AO biochemical zone 4;

[0049] S4, anaerobic biochemical reaction: the fifth treated liquid E is subjected to anaerobic biochemical reaction to generate the seventh treated liquid G, and the seventh treated liquid G is transferred back to the stirring and separation zone 1, with a flow rate of 30m 3 / h;

[0050] S5, AO biochemical reaction: The sixth treated liquid F and the first treated liquid A are subjected to anaerobic / aerobic biochemical treatment to generate the eighth treated liquid H, and the eighth treated liquid H is transferred to the adsorption enhancement zone 5 at a flow rate of 45m 3 / h;

[0051] S6, aeration: The eighth treated liquid H is aerated in the adsorption enhancement zone 5 to generate the ninth treated liquid J and sludge, and the ninth treated liquid J is transferred to the stirring and separation zone 1 at a flow rate of 30m 3 / h, discharge the sludge, the flow rate is 10m 3 / h.

[0052] The above description is only illustrative rather than restrictive of the present invention. Those skilled in the art will understand that any modification, change or equivalent that can be made without departing from the spirit and scope defined by the claims will fall within the protection scope of the present invention.

Claims

1. An anaerobic and aerobic combined sludge contact adsorption system, characterized in that: include: A stirring and separation zone (1): the inlet of which is connected to the anaerobic biochemical zone (3) and the adsorption enhancement zone (5), and the outlet of which is connected to the decomposition zone (2), the AO biochemical zone (4), and the Fenton reactor, and is used to generate a first treatment liquid A, a second treatment liquid B, and a third treatment liquid C by passing sewage through a filtration membrane, and is used to transmit the first treatment liquid A to the AO biochemical zone (4), to transmit the second treatment liquid B to the Fenton reactor, to receive a fifth treatment liquid G transmitted from the anaerobic biochemical zone (3), to receive a ninth treatment liquid J transmitted from the adsorption enhancement zone (5), to stir and mix the fifth treatment liquid G, the ninth treatment liquid J, and the third treatment liquid C to generate a fourth treatment liquid D, and to transmit the fourth treatment liquid D to the decomposition zone (2); Decomposition zone (2): the inlet is connected to the stirring and separation zone (1), and the outlet is connected to the anaerobic biochemical zone (3) and the AO biochemical zone (4), and is used to receive the fourth treatment liquid D transmitted by the stirring and separation zone (1), to separate and precipitate the fourth treatment liquid D to generate a fifth treatment liquid E and a sixth treatment liquid F, to transmit the fifth treatment liquid E to the anaerobic biochemical zone (3), and to transmit the sixth treatment liquid F to the AO biochemical zone (4); Anaerobic biochemical zone (3): the inlet is connected to the decomposition zone (2), the outlet is connected to the stirring and separation zone (1), and is used to receive the fifth treatment liquid E transmitted by the decomposition zone (2), to perform an anaerobic biochemical reaction on the fifth treatment liquid E to generate the seventh treatment liquid G, and to transmit the seventh treatment liquid G to the stirring and separation zone (1); AO biochemical zone (4): the inlet is connected to the decomposition zone (2) and the stirring and separation zone (1), and the outlet is connected to the adsorption enhancement zone (5), and is used to receive the sixth treatment liquid F transmitted by the decomposition zone (2), and receive the first treatment liquid A transmitted by the separation and stirring zone (1), and is used to perform anaerobic / aerobic biochemical treatment on the sixth treatment liquid F and the first treatment liquid A to generate an eighth treatment liquid H, and is used to transmit the eighth treatment liquid H to the adsorption enhancement zone (5); Adsorption enhancement zone (5): the inlet is connected to the AO biochemical zone (4), and the outlet is connected to the stirring and separation zone (1), for receiving the eighth treatment liquid H transmitted by the AO biochemical zone (4), for aerating the eighth treatment liquid H to generate the ninth treatment liquid J and sludge, for transmitting the ninth treatment liquid J to the stirring and separation zone (1), and for discharging the sludge.

2. The anaerobic-aerobic combined sludge contact adsorption system according to claim 1, characterized in that: A first sludge lifting pump (6) is provided in the analysis zone (2), and the first sludge lifting pump (6) is used to transfer the sixth treatment liquid F to the AO biochemical zone (4).

3. The anaerobic-aerobic combined sludge contact adsorption system according to claim 1, characterized in that: A second sludge lifting pump (7) is provided in the adsorption enhancement zone (5), and the second sludge lifting pump (7) is used to transfer the ninth treatment liquid J to the stirring and separation zone (1).

4. The anaerobic-aerobic combined sludge contact adsorption system according to claim 1, characterized in that: An axial flow pump (8) is provided in the stirring and separation zone (1), and the axial flow pump (8) is used to transfer the fourth treatment liquid D to the decomposition zone (2).

5. The anaerobic-aerobic combined sludge contact adsorption system according to claim 1, characterized in that: A liquid storage tank (9) is provided in the stirring and separation zone (1) for storing and mixing the fifth treatment liquid G, the ninth treatment liquid J, and the third treatment liquid C.

6. The anaerobic-aerobic combined sludge contact adsorption system according to claim 1, characterized in that: One side of the analysis zone (2) is connected to one side of the adsorption enhancement zone (5), and a plurality of filler mold assemblies (10) are provided on the other side of the analysis zone (2) and the other side of the adsorption enhancement zone (5). The analysis zone (2), the adsorption enhancement zone (5) and the filler mold assemblies (10) form a cylindrical structure, and a partition is provided at the connection between the analysis zone (2) and the adsorption enhancement zone (5).

7. The method for using the anaerobic-aerobic combined sludge contact adsorption system according to any one of claims 1 to 6, characterized in that: The following steps are involved: S1, stirring and separation: the sewage enters the stirring and separation zone (1) and passes through the filtration membrane to generate the first treatment liquid A, the second treatment liquid B and the third treatment liquid C, the first treatment liquid A is transferred to the AO biochemical zone (4), and the second treatment liquid B is transferred to the Fenton reactor; S2, mixing: the third treatment liquid C, the fifth treatment liquid G transmitted from the anaerobic biochemical zone (3), and the ninth treatment liquid J transmitted from the adsorption enhancement zone (5) are stirred and mixed to generate the fourth treatment liquid D, and the fourth treatment liquid D is transmitted to the desorption zone (2) through the axial flow pump (8); S3, analytical separation: the fourth treatment liquid D is analytically separated in the analytical zone (2), the upper layer forms the fifth treatment liquid E, the lower layer forms the sixth treatment liquid F, the fifth treatment liquid E is transferred to the anaerobic biochemical zone (3), and the sixth treatment liquid F is transferred to the AO biochemical zone (4); S4, anaerobic biochemical reaction: performing an anaerobic biochemical reaction on the fifth treated liquid E to generate the seventh treated liquid G, and transferring the seventh treated liquid G back to the stirring and separation zone (1); S5, AO biochemical reaction: performing anaerobic / aerobic biochemical treatment on the sixth treated liquid F and the first treated liquid A to generate an eighth treated liquid H, and transferring the eighth treated liquid H to the adsorption enhancement zone (5); S6. Aeration: The eighth treated liquid H is subjected to an aeration reaction in the adsorption enhancement zone to generate the ninth treated liquid J and sludge, and the ninth treated liquid J is transferred to the stirring and separation zone (1), and the sludge is discharged.

8. The method for using the anaerobic-aerobic combined sludge contact adsorption system according to claim 7, characterized in that: In step S3, the sixth treatment liquid F is cooled during the process of transferring the sixth treatment liquid F from the decomposition zone (1) to the AO biochemical zone (4).

9. The method for using the anaerobic-aerobic combined sludge contact adsorption system according to claim 7, characterized in that: The flow rate of the axial flow pump (8) is greater than the flow rate of the fifth treatment liquid E transferred from the decomposition zone (2) to the anaerobic biochemical zone (3).

10. The method for using the anaerobic-aerobic combined sludge contact adsorption system according to claim 7, characterized in that: The ratio of the flow rate of the sludge discharge to the flow rate of the ninth treatment liquid J transmitted from the adsorption enhancement zone (5) to the stirring and separation zone (1) is 1:3.

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