Contact oxidation sewage treatment equipment and sewage treatment method

Abstract

The present invention discloses a contact oxidation sewage treatment equipment and a sewage treatment method, which relates to the technical field of sewage treatment equipment, including a contact oxidation tank and an intelligent filter tank. A sludge area is formed at the bottom of the contact oxidation tank, and a plurality of perforated sludge discharge pipes are arranged in the sludge area, and a plurality of sludge discharge pipes are arranged on the top side of the perforated sludge discharge pipes; the intelligent filter tank includes an intelligent filter tank body, a sewage discharge area, a sedimentation area, a filtration area, a clean water area, an inlet area and an outlet area, and a filtration device is arranged in the filtration area. A backwashing device is arranged above the intelligent filter tank body, and an energy wave generating device is arranged below the backwashing device. The contact oxidation tank of the contact oxidation sewage treatment equipment of the present invention has good effluent water quality, and the contact oxidation tank can timely remove aged sludge and its metabolites, so that the effluent water quality is better; the intelligent filter tank has good sludge interception and mud-water separation effects, and the intelligent filter tank adopts an upward flow structure, organically integrating the sedimentation unit and the filtration unit in water treatment, and has a good sludge interception effect.

Description

Technical Field

[0001] The invention relates to the technical field of sewage treatment equipment, in particular to contact oxidation sewage treatment equipment and a sewage treatment method. Background Art

[0002] MBR, which is widely used in water treatment, usually refers to solid-liquid separation membrane-bioreactor, which is a water treatment technology that uses membrane separation process to replace the secondary sedimentation tank in the traditional activated sludge method. MBR organically combines membrane separation technology with traditional biological treatment technology to achieve the separation of sludge retention time and hydraulic retention time, greatly improving the solid-liquid separation efficiency, and its separation effect is much better than that of traditional secondary sedimentation tanks; and due to the increase in the concentration of activated sludge in the aeration tank and the emergence of special bacteria (especially dominant bacteria) in the sludge, the biochemical reaction rate is increased.

[0003] At the same time, MBR still has some shortcomings: 1. The membrane cost is high and the membrane flux decreases year by year. It needs to be replaced in about 3 years, making the investment in membrane bioreactor higher than the traditional sewage treatment process; 2. Membrane pollution is easy to occur, which brings inconvenience to operation and management: MBR needs to be equipped with a suction backwash pump, a negative pressure transmitter, a crane trolley and a chemical washing and soaking device. It needs to be backwashed regularly, and the MBR membrane is regularly lifted out and soaked in sodium hypochlorite and other chemicals for offline cleaning, which not only affects the health of operators, but also has high maintenance costs; 3. High energy consumption: First, the MBR mud-water separation process must maintain a certain membrane driving pressure. Secondly, the MLSS concentration in the MBR pool is very high. To maintain a sufficient oxygen transfer rate, the aeration intensity must be increased. Summary of the invention

[0004] The purpose of the present invention is to provide a contact oxidation sewage treatment equipment and a sewage treatment method, which have the beneficial effects of good water quality of the contact oxidation tank effluent, good sludge retention and mud-water separation effect in the intelligent filter tank, easy cleaning and maintenance of the intelligent filter tank, and simple operation, so as to solve the problems raised in the above background technology.

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] A contact oxidation sewage treatment device and a sewage treatment method, comprising a contact oxidation tank and an intelligent filter tank, wherein an aeration branch pipe is arranged in the contact oxidation tank, an aeration main pipe is connected to the aeration branch pipe, the aeration main pipe is fixed on the contact oxidation tank, a water outlet is arranged in the contact oxidation tank, a sludge area is formed at the bottom of the contact oxidation tank, a plurality of perforated sludge discharge pipes are arranged in the sludge area, the plurality of perforated sludge discharge pipes are evenly distributed in the sludge area, a plurality of evenly distributed holes are arranged at the bottom of the perforated sludge discharge pipe, a plurality of sludge discharge pipes are arranged on the top side of the perforated sludge discharge pipe, the number of the sludge discharge pipes is the same as that of the perforated sludge discharge pipes, one end of the sludge discharge pipe is connected to the perforated sludge discharge pipe, and the other end extends out of the contact oxidation tank, a recoil pipe is arranged on the top side of the sludge discharge pipe, one end of the recoil pipe is connected to the sludge discharge pipe, and the other end extends to the top of the contact oxidation tank and is connected to a fan, a pneumatic valve and a manual valve are arranged at the bottom of the recoil pipe, and a filler is arranged in the contact oxidation tank.

[0007] The smart filter tank includes a smart filter tank body, a sewage discharge area, a sedimentation area, a filtration area, a clean water area, a water inlet area and a water outlet area. The sewage discharge area, the sedimentation area, the filtration area and the clean water area are arranged in the smart filter tank body from bottom to top. The water inlet area is arranged in the smart filter tank body, the water outlet area is arranged on the top side of the clean water area, a filtration device is arranged in the filtration area, a backwash device is arranged above the smart filter tank body, and an energy wave generating device is arranged below the backwash device.

[0008] As a further solution of the present invention: a water inlet pipe is provided at one end of the contact oxidation tank, and a water outlet pipe is provided at the other end. One end of the water inlet pipe and the water outlet pipe are connected to the contact oxidation tank, and the other end extends out of the contact oxidation tank.

[0009] As a further solution of the present invention: a plurality of first mud buckets are provided at the bottom of the sludge area, and the plurality of first mud buckets are evenly distributed at the bottom of the sludge area; a plurality of perforated mud discharge pipes are provided at the bottom of the sludge area, and the plurality of perforated mud discharge pipes are evenly distributed at the bottom of the sludge area.

[0010] As a further solution of the present invention: a first guide rail is provided on the top of the contact oxidation tank, a second guide rail is provided on the first guide rail, the second guide rail is slidably connected to the first guide rail, a sliding bracket is provided on the second guide rail, the sliding bracket is slidably connected to the second guide rail, and the backwashing device and the energy wave generating device are both fixed on the sliding bracket.

[0011] As a further solution of the present invention: a partition wall is provided on the top of the intelligent filter tank body, the partition wall separates the water inlet area and the sewage discharge area, and a second mud hopper is provided at the bottom of the intelligent filter tank body, and the second mud hopper is in a bucket shape.

[0012] As a further solution of the present invention: a water inlet is provided on the water inlet area, and a water inlet valve is provided on the water inlet.

[0013] As a further solution of the present invention: a sewage outlet is provided in the sedimentation area, and a sewage valve is provided on the sewage outlet.

[0014] As a further solution of the present invention: the diameter of the recoil pipe is 100 mm.

[0015] As a further solution of the present invention: the sewage treatment method comprises the following steps:

[0016] 1. Sewage drainage and sludge return step: the return sludge in the intelligent filter tank enters the contact oxidation tank from the water inlet pipe of the contact oxidation tank, and becomes the sewage in the contact oxidation tank. The sewage flows downward through the filler to the sludge sedimentation area. The contact oxidation tank blocks the sludge. Due to the blocking effect of the contact oxidation tank, the sewage passes through the water outlet, flows upward through the filler again to the pool surface, and then is discharged to the water inlet of the intelligent filter tank through the outlet pipe. The sewage enters the water inlet area through the water inlet of the intelligent filter tank, and then enters the sedimentation area, flows upward through the filtration area and the filtration device to reach the clean water area, and then reaches the water outlet area for discharge. A large amount of sludge in the sewage is intercepted, enters the sewage outlet through the sedimentation area, and then flows back to the contact aerobic tank inlet pipe through the sewage outlet to form a cycle;

[0017] 2. Biochemical reaction and sludge discharge steps: the return sludge in the intelligent filter tank enters the contact oxidation tank from the water inlet pipe of the contact oxidation tank, and an aerobic reaction is carried out in the filler to remove organic matter in the sludge. The oxygen for the aerobic reaction is provided by the aeration main pipe and the aeration branch pipe. The supernatant is discharged to the water inlet of the intelligent filter tank through the outlet pipe, and the sludge enters the sludge area. After the sludge is precipitated, it enters the perforated sludge discharge pipe and then enters the sludge discharge pipe. The backwash pipe is controlled by a pneumatic valve and a manual valve, and air backwashing and sludge discharge are automatically performed regularly to discharge the sludge from the sludge discharge pipe outside the contact oxidation tank.

[0018] As a further solution of the present invention: the intelligent filter tank includes the following sewage treatment steps:

[0019] Sewage enters the water inlet area of ​​the intelligent filter tank and flows upward through the sedimentation area, filtration area, filtration device, and clean water area in sequence. The sedimentation area, filtration area, and filtration device intercept and filter the sewage in turn. A large amount of sludge is intercepted and precipitated in the sedimentation area at the bottom of the intelligent filter tank. The sludge is then continuously returned to the contact oxidation tank inlet pipe through the sewage discharge area. The sewage is intercepted and filtered and then flows through the clean water area.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] The contact oxidation sewage treatment equipment of the present invention further integrates the coagulation, sedimentation and filtration units organically on the basis of combining biological treatment with mud-water separation technology in MBR, and adopts a precision filtration device with multi-layer filter materials for filtration. The advantages are embodied in the following aspects:

[0022] 1. Good effluent quality from the contact oxidation pond: The contact oxidation pond discharges sludge from the contact oxidation pond regularly, which can timely remove aged sludge and its metabolites, making the effluent quality better;

[0023] 2. The intelligent filter tank has good sludge interception and mud-water separation effects: The intelligent filter tank adopts an upward flow structure, which organically integrates the sedimentation unit and the filtration unit in water treatment. The sewage enters from the bottom of the intelligent filter tank, and first passes through multiple interceptions in the sewage discharge area and the sedimentation area. After that, it continues to pass through the filtration area upward, and is filtered by a multi-layer filter device composed of high-molecular precision filter materials to reach the clean water area. The wastewater forms an up-and-down flow in it, and the filter layer is not easy to be blocked. The sludge interception effect is good, and the effluent water quality can reach the same level as that of MBR, and the head loss is small;

[0024] 3. The smart filter tank is easy to clean and maintain: The smart filter tank is equipped with a fully intelligent backwashing device to achieve automatic control. The filter tank can run continuously without being affected during backwashing, and the operation and management are convenient.

[0025] The contact oxidation sewage treatment equipment of the present invention can achieve the effect of external MBR in effluent quality, has a small amount of residual sludge, does not need chemical cleaning like MBR membrane, has lower operating cost and maintenance cost than MBR, and is easy to operate. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic structural diagram of the contact oxidation tank of the contact oxidation sewage treatment equipment of the present invention.

[0027] Figure 2 for Figure 1 Cross-sectional view along MM.

[0028] Figure 3 for Figure 1 Cross-sectional view along NN.

[0029] Figure 4 It is a structural schematic diagram of the intelligent filter tank of the contact oxidation sewage treatment equipment of the present invention.

[0030] Figure 5 It is a schematic diagram of the sewage route and sludge route of the contact oxidation sewage treatment equipment of the present invention.

[0031] Markings in the figure:

[0032] 1. Inlet pipe; 2. Outlet pipe; 3. Filler; 4. Sludge area; 5. First mud bucket; 6. Mud discharge pipe; 7. Aeration branch pipe; 8. Aeration main pipe; 9. Backwash pipe; 10. Pneumatic valve; 11. Perforated mud discharge pipe; 12. Contact oxidation tank; 13. Water outlet; 14. Manual valve; 15. Mud discharge valve;

[0033] 10A, sedimentation area; 11A, second mud hopper; 20, filtration area; 21, filtration device; 30, clean water area; 40, water inlet area; 50, water outlet area; 60, sewage discharge area; 70, backwashing device; 71, first guide rail; 72, second guide rail; 73, energy wave generating device; 74, sliding bracket; 75, partition wall; 76, water inlet; 77, water inlet valve; 78, sewage outlet; 79, sewage discharge valve. DETAILED DESCRIPTION

[0034] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0035] Please refer to the attached Figures 1 to 5 In the embodiment of the present invention, a contact oxidation sewage treatment equipment and sewage treatment method include a contact oxidation tank 12 and a smart filter tank, please refer to the attached Figure 1 , 2 and 3, an aeration branch pipe 7 is provided in the contact oxidation tank 12, an aeration main pipe 8 is connected to the aeration branch pipe 7, the aeration main pipe 8 is fixed on the contact oxidation tank 12, a water outlet 13 is provided in the contact oxidation tank 12, further, a water inlet pipe 1 is provided at one end of the contact oxidation tank 12, and a water outlet pipe 2 is provided at the other end, one end of the water inlet pipe 1 and the water outlet pipe 2 are connected to the contact oxidation tank 12, and the other end extends out of the contact oxidation tank 12; a sludge area 4 is formed at the bottom of the contact oxidation tank 12, a plurality of perforated sludge discharge pipes 11 are provided in the sludge area 4, and the plurality of perforated sludge discharge pipes 11 are evenly distributed in the sludge area 4, a plurality of evenly distributed holes are provided at the bottom of the perforated sludge discharge pipes 11, so that sludge can enter the perforated sludge discharge pipes 11 from the perforations, and the top side of the perforated sludge discharge pipes 11 A plurality of mud discharge pipes 6 are provided, and the number of the mud discharge pipes 6 is the same as that of the perforated mud discharge pipes 11. One end of the mud discharge pipe 6 is connected to the perforated mud discharge pipe 11, and the other end extends out of the contact oxidation tank 12. A recoil pipe 9 is provided on the top side of the mud discharge pipe 6. One end of the recoil pipe 9 is connected to the mud discharge pipe 6, and the other end extends to the top of the contact oxidation tank 12 and is connected to the fan. A mud discharge valve 15 is provided on the mud discharge pipe 6. The mud discharge valve 15 is used to control the conduction and closing of the mud discharge pipe 6. A pneumatic valve 10 and a manual valve 14 are provided at the bottom of the recoil pipe 9. The pneumatic valve 10 and the manual valve 14 control the pneumatic valve 10 to perform air recoil to increase the air pressure in the mud discharge pipe 6, so that the mud discharge pipe 6 can discharge the sludge out of the contact oxidation tank 12; further, the diameter of the recoil pipe 9 is 100 mm; please refer to the attached Figure 3 The contact oxidation tank 12 is provided with fillers 3, and the sludge undergoes aerobic reaction in the fillers 3 to remove organic matter from the sewage. Figure 4The smart filter tank includes a smart filter tank body, a sewage discharge area 60, a sedimentation area 10A, a filtration area 20, a clean water area 30, a water inlet area 40 and a water outlet area 50. The sewage discharge area 60, the sedimentation area 10A, the filtration area 20, and the clean water area 30 are sequentially arranged in the smart filter tank body from bottom to top. The water inlet area 40 is arranged in the smart filter tank body. Further, the water inlet area 40 is provided with a water inlet port 76, and the water inlet port 76 is provided with a water inlet valve 77; further, the sedimentation area 10A is provided with a sewage discharge port 78, and the sewage discharge port 78 is provided with a sewage discharge valve 79; the water outlet area 50 is provided with a clean water discharge port 78. On the top side of the water zone 30, a filter device 21 is provided in the filter zone 20, a backwash device 70 is provided above the intelligent filter tank body, and an energy wave generator 73 is provided below the backwash device 70; the intelligent filter tank of the contact oxidation sewage treatment equipment of the present invention is easy to clean and maintain, and the intelligent filter tank is equipped with a fully intelligent backwash device 70 to achieve automatic control. The energy wave generator 73 generates energy to push the water flow downward, and the backwash direction is opposite to the filtering direction, achieving a good cleaning effect. During backwashing, the filter tank can continue to operate without being affected, and the operation and management are convenient. Please refer to the attached Figure 5 , the effluent from the contact oxidation tank 12 is discharged from the outlet pipe 2 to the water inlet 76 of the intelligent filter tank, and the sludge return from the intelligent filter tank is discharged from the sewage outlet 78 to the water inlet pipe 1 of the contact oxidation tank 12. The contact oxidation sewage treatment equipment of the present invention further organically integrates the coagulation, sedimentation and filtration units on the basis of combining the biological treatment with the mud-water separation technology in MBR, and adopts a precision filtration device 21 with multi-layer filter materials for filtration. The advantages are reflected in the following aspects: 1. The effluent from the contact oxidation tank 12 has good water quality: the contact oxidation tank 12 discharges the sludge from the contact oxidation tank 12 by regular sludge discharge, which can timely remove the aged sludge and its metabolites, making the effluent water quality better; 2. The sludge retention and mud-water separation effects of the intelligent filter tank are good: the intelligent filter tank adopts an upward flow structure to separate the sedimentation unit in the water treatment from the filtration unit The elements are organically integrated, and the sewage enters from the bottom of the intelligent filter tank, and first passes through the multiple interceptions of the sewage discharge area 60 and the sedimentation area 10A upwards, and then continues to pass through the filter area 20 upwards, and reaches the clean water area 30 after being filtered by the filter device 21 composed of multi-layer filter materials composed of high molecular precision filter materials. The wastewater forms an up-and-down flow in it, the filter layer is not easy to be blocked, and the sludge interception effect is good, which can achieve the same level of effluent water quality as MBR, and the head loss is small; 3. The intelligent filter tank is easy to clean and maintain: the intelligent filter tank is equipped with a fully intelligent backwashing device 70 to realize automatic control, and the filter tank can run continuously without being affected during backwashing, and the operation and management are convenient. The contact oxidation sewage treatment equipment of the present invention can achieve the effect of external MBR in effluent water quality, and the amount of residual sludge is small, and no chemical cleaning is required like MBR membrane, and the operating cost and maintenance cost are lower than MBR, and it is easy to operate.

[0036] In a preferred embodiment of the present invention, a plurality of first mud hoppers 5 are provided at the bottom of the sludge area 4, and the plurality of first mud hoppers 5 are evenly distributed at the bottom of the sludge area 4. The first mud hoppers 5 are convenient for collecting the sludge in the contact oxidation tank 12, and for discharging the sludge through the perforated mud discharge pipes 11 and 6.

[0037] In a preferred embodiment of the present invention, a first guide rail 71 is provided on the top of the clean water area 30, a second guide rail 72 is provided on the first guide rail 71, the second guide rail 72 is slidably connected to the first guide rail 71, a sliding bracket 74 is provided on the second guide rail 72, the sliding bracket 74 is slidably connected to the second guide rail 72, the backwashing device 70 and the energy wave generating device 73 are both fixed on the sliding bracket 74, so as to facilitate the adjustment of the positions of the backwashing device 70 and the energy wave generating device 73, so as to facilitate the backwashing of the intelligent filter tank body.

[0038] In a preferred embodiment of the present invention, a partition wall 75 is provided on the top of the intelligent filter tank body, and the partition wall 75 separates the water inlet area 40 and the sewage discharge area 60. A second mud hopper 11A is provided at the bottom of the intelligent filter tank body. The second mud hopper 11A is bucket-shaped, and the second mud hopper 11A is convenient for concentrating the sludge in the intelligent filter tank to the sewage discharge area 60.

[0039] In a preferred embodiment of the present invention, the sewage treatment method comprises the following steps:

[0040] 1. Sewage drainage and sludge return step. The return sludge in the intelligent filter tank enters the contact oxidation tank 12 from the water inlet pipe 1 of the contact oxidation tank 12 to become sewage in the contact oxidation tank 12. The sewage flows downward through the filler 3 to reach the sludge sedimentation area 4. The contact oxidation tank 12 blocks the sludge. Due to the blocking effect of the contact oxidation tank 12, the sewage passes through the water outlet 13, flows upward through the filler 3 again to reach the pool surface, and then is discharged to the water inlet 76 of the intelligent filter tank through the outlet pipe 2. The sewage enters the water inlet area 40 through the water inlet 76 of the intelligent filter tank, and then enters the sedimentation area 10A, flows upward through the filtration area 20 and the filtration device 21 to reach the clean water area 30, and then reaches the water outlet area 50 for discharge. A large amount of sludge in the sewage is intercepted and enters the sewage outlet 78 through the sedimentation area 10A, and then flows back to the contact aerobic tank water inlet pipe 1 through the sewage outlet 78 to form a cycle.

[0041] 2. Biochemical reaction and sludge discharge steps. The return sludge in the intelligent filter tank enters the contact oxidation tank 12 from the water inlet pipe 1 of the contact oxidation tank 12, and an aerobic reaction is carried out in the filler 3 to remove organic matter in the sludge. The oxygen for the aerobic reaction is provided by the aeration main pipe 8 and the aeration branch pipe 7. The supernatant is discharged through the outlet pipe 2, and the sludge enters the sludge area 4. After the sludge is precipitated, it enters the perforated sludge discharge pipe 11 and then enters the sludge discharge pipe 6. The sludge is automatically discharged by air backwashing at regular intervals. The backwash pipe 9 is controlled by the pneumatic valve 10 and the manual valve 14 to increase the air pressure in the sludge discharge pipe 6 so that the sludge discharge pipe 6 can discharge the sludge out of the contact oxidation tank 12.

[0042] In a preferred embodiment of the present invention, the intelligent filter tank includes the following sewage treatment steps:

[0043] Sewage enters the water inlet area 40 of the intelligent filter tank, and flows upward through the sedimentation area 10A, the filtration area 20, the filtration device 21, and the clean water area 30. The sedimentation area 10A, the filtration area 20, and the filtration device 21 intercept and filter the sewage in turn. A large amount of sludge is intercepted and filtered through the filtration device 21 with multi-layer filter materials composed of high-molecular precision filter materials to reach the clean water area 30, reaching the same level of effluent water quality as MBR, and the filter layer is not easy to be blocked, the head loss is small, and the sewage is precipitated in the sedimentation area 10A at the bottom of the intelligent filter tank, and then the sludge is continuously returned through the sewage discharge area 60, which can reduce energy consumption. The sewage is intercepted and filtered and then flows through the clean water area 30.

[0044] The contact oxidation pool 12 of the contact oxidation sewage treatment equipment of the present invention has good effluent quality. The contact oxidation pool 12 discharges sludge from the contact oxidation pool 12 by regular sludge discharge, which can timely remove aged sludge and its metabolites, making the effluent quality better. The intelligent filter pool has good sludge interception and mud-water separation effects. The intelligent filter pool adopts an upward flow structure, which organically integrates the sedimentation unit and the filtration unit in water treatment. Sewage enters from the bottom of the intelligent filter pool, first passes through the multiple interceptions of the sewage discharge area 60 and the sedimentation area 10A, and continues to pass through the filtration area 20 upward, with good sludge interception effect; the intelligent filter pool is easy to clean and maintain, and the intelligent filter pool is equipped with a fully intelligent backwashing device 70 to realize automatic control. The filter pool can operate continuously without being affected during backwashing, and the operation and management are convenient.

[0045] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A contact oxidation sewage treatment equipment, characterized in that: It comprises a contact oxidation tank and an intelligent filter tank, wherein an aeration branch pipe is arranged in the contact oxidation tank, an aeration main pipe is connected to the aeration branch pipe, the aeration main pipe is fixed on the contact oxidation tank, a water outlet is arranged in the contact oxidation tank, a sludge area is formed at the bottom of the contact oxidation tank, a plurality of perforated mud discharge pipes are arranged in the sludge area, a plurality of the perforated mud discharge pipes are evenly distributed in the sludge area, a plurality of evenly distributed holes are arranged at the bottom of the perforated mud discharge pipe, a plurality of mud discharge pipes are arranged on the top side of the perforated mud discharge pipe, the number of the mud discharge pipes is the same as that of the perforated mud discharge pipes, one end of the mud discharge pipe is connected to the perforated mud discharge pipe, and the other end extends out of the contact oxidation tank, a recoil pipe is arranged on the top side of the mud discharge pipe, one end of the recoil pipe is connected to the mud discharge pipe, and the other end extends to the top of the contact oxidation tank and is connected to a fan, a pneumatic valve and a manual valve are arranged at the bottom of the recoil pipe, and a filler is arranged in the contact oxidation tank; The smart filter tank includes a smart filter tank body, a sewage discharge area, a sedimentation area, a filtration area, a clean water area, a water inlet area and a water outlet area. The sewage discharge area, sedimentation area, filtration area and clean water area are arranged in the smart filter tank body from bottom to top. The water inlet area is arranged in the smart filter tank body, the water outlet area is arranged on the top side of the clean water area, a filtration device is arranged in the filtration area, a backwashing device is arranged above the smart filter tank body, and an energy wave generating device is arranged below the backwashing device.

2. A contact oxidation sewage treatment equipment according to claim 1, characterized in that: A water inlet pipe is provided at one end of the contact oxidation tank, and a water outlet pipe is provided at the other end. One end of the water inlet pipe and the water outlet pipe is connected to the contact oxidation tank, and the other end extends out of the contact oxidation tank.

3. A contact oxidation sewage treatment equipment according to claim 1, characterized in that: A plurality of first mud buckets are arranged at the bottom of the mud area, and the plurality of first mud buckets are evenly distributed at the bottom of the mud area. A plurality of perforated mud discharge pipes are arranged at the bottom of the mud area, and the plurality of perforated mud discharge pipes are evenly distributed at the bottom of the mud area.

4. The contact oxidation sewage treatment equipment according to claim 1 is characterized in that: A first guide rail is provided on the top of the contact oxidation tank, a second guide rail is provided on the first guide rail, the second guide rail is slidably connected to the first guide rail, a sliding bracket is provided on the second guide rail, the sliding bracket is slidably connected to the second guide rail, and the backwashing device and the energy wave generating device are both fixed on the sliding bracket.

5. The contact oxidation sewage treatment equipment according to claim 1, characterized in that: A partition wall is provided on the top of the intelligent filter tank body, and the partition wall separates the water inlet area and the sewage discharge area. A second mud hopper is provided at the bottom of the intelligent filter tank body, and the second mud hopper is in a bucket shape.

6. The contact oxidation sewage treatment equipment according to claim 1, characterized in that: The water inlet area is provided with a water inlet, and the water inlet is provided with a water inlet valve.

7. The contact oxidation sewage treatment equipment according to claim 1, characterized in that: The sedimentation area is provided with a sewage outlet, and the sewage outlet is provided with a sewage valve.

8. The contact oxidation sewage treatment equipment according to claim 1, characterized in that: The diameter of the recoil pipe is 100 mm.

9. A sewage treatment method according to any one of claims 1 to 8, characterized in that: The sewage treatment method comprises the following steps:

1. Sewage drainage and sludge return step: the return sludge in the intelligent filter tank enters the contact oxidation tank from the water inlet pipe of the contact oxidation tank, and becomes the sewage in the contact oxidation tank. The sewage flows downward through the filler to the sludge sedimentation area. The contact oxidation tank blocks the sludge. Due to the blocking effect of the contact oxidation tank, the sewage passes through the water outlet, flows upward through the filler again to the pool surface, and then is discharged to the water inlet of the intelligent filter tank through the outlet pipe. The sewage enters the water inlet area through the water inlet of the intelligent filter tank, and then enters the sedimentation area, flows upward through the filtration area and the filtration device to reach the clean water area, and then reaches the water outlet area for discharge. A large amount of sludge in the sewage is intercepted, enters the sewage outlet through the sedimentation area, and then flows back to the contact aerobic tank inlet pipe through the sewage outlet to form a cycle; 2. Biochemical reaction and sludge discharge steps: the return sludge in the intelligent filter tank enters the contact oxidation tank from the water inlet pipe of the contact oxidation tank, and an aerobic reaction is carried out in the filler to remove organic matter in the sludge. The oxygen for the aerobic reaction is provided by the aeration main pipe and the aeration branch pipe. The supernatant is discharged to the water inlet of the intelligent filter tank through the outlet pipe, and the sludge enters the sludge area. After the sludge is precipitated, it enters the perforated sludge discharge pipe and then enters the sludge discharge pipe. The backwash pipe is controlled by a pneumatic valve and a manual valve, and air backwashing and sludge discharge are automatically performed regularly to discharge the sludge from the sludge discharge pipe outside the contact oxidation tank.

10. The sewage treatment method according to claim 9, characterized in that: The intelligent filter tank includes the following sewage treatment steps: Sewage enters the water inlet area of ​​the intelligent filter tank and flows upward through the sedimentation area, filtration area, filtration device, and clean water area in sequence. The sedimentation area, filtration area, and filtration device intercept and filter the sewage in turn. A large amount of sludge is intercepted and precipitated in the sedimentation area at the bottom of the intelligent filter tank. The sludge is then continuously returned to the contact oxidation tank inlet pipe through the sewage discharge area. The sewage is intercepted and filtered and then flows through the clean water area.

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