Sewage pretreatment device based on microbial activation

Abstract

The invention discloses a sewage pretreatment device based on microbial activation in the technical field of sewage pretreatment, the sewage pretreatment device comprises a treatment box, one end of the treatment box is fixedly connected with a settling box, the bottom of the inner side of the settling box is obliquely arranged, and the upper end of the treatment box is fixedly connected with a first circulating pump; the input end of the first circulating pump extends into the settling box, the output end of the first circulating pump extends into the treatment box, and one end of the treatment box is fixedly connected with a second circulating pump; gas in the treatment box can be detected by a carbon dioxide detector through rotation of a baffle plate, and when the content of carbon dioxide in the gas detected for multiple times is relatively low, the pretreatment mechanism is driven by the transmission mechanism to move, so that the activated part in the activation box enters the treatment box to be subjected to sewage pretreatment again; the part in the treatment box enters the activation box, and nutrient substances are added into the activation box through the filling mechanism, so that the resuscitation of microorganisms from a dormant state and mass propagation are accelerated.

Description

TECHNICAL FIELD

[0001] The present application relates to the sewage pretreatment technical field, and particularly relates to a sewage pretreatment device based on microbial activation. BACKGROUND

[0002] With the rapid development of urbanization and industrialization in China, the discharge of various types of wastewater and sewage is increasing, and its composition is becoming increasingly complex, containing a large amount of refractory organic matter, ammonia nitrogen, total phosphorus and other pollutants. Biological treatment technology has become the core process for treating urban domestic sewage and industrial wastewater due to its low cost, complete treatment and no secondary pollution. The activity and efficiency of microorganisms directly determine the stability and treatment efficiency of the entire treatment system.

[0003] For example, Chinese patent CN209368076U discloses an MBR water treatment integrated equipment capable of pretreating sewage, which comprises an elongated shell. The integrated equipment further comprises a pretreatment device, an aerobic mechanism, a microbial decomposition mechanism, a membrane separation mechanism and a control device. The pretreatment device comprises a filter assembly and a driving assembly. The aerobic mechanism comprises an aeration assembly. The shell is partitioned into an aerobic zone, a transition zone and a membrane separation zone.

[0004] In the above patent, the sewage is fully oxidized by the aeration pipe, and then the water in the aerobic zone is sucked into the transition zone by the suction pump. The sewage is decomposed by the microbial membrane filler, and then passes through the membrane separation zone to achieve pretreatment of the sewage. However, the above scheme has the following disadvantages: the above patent lacks a structure for improving the activity of microorganisms when the activity of microorganisms is low. When the sewage is pretreated by microorganisms, the microorganisms attached to the filler often cannot fully react and treat the sewage when the activity of the microorganisms is low, which reduces the pretreatment efficiency of the sewage. Therefore, we propose a sewage pretreatment device based on microbial activation. SUMMARY

[0005] In view of the deficiencies in the prior art, the present application provides a sewage pretreatment device based on microbial activation to solve the problems raised in the background art.

[0006] The purpose of the present application is achieved in that a sewage pretreatment device based on microbial activation comprises a treatment tank, one end of the treatment tank is fixedly connected with a sedimentation tank, the inside bottom of the sedimentation tank is arranged in an inclined manner, the upper end of the treatment tank is fixedly connected with a first circulating pump, the input end of the first circulating pump extends into the sedimentation tank, and the output end extends into the treatment tank, one end of the treatment tank is fixedly connected with a second circulating pump, the input end of the second circulating pump extends into the treatment tank, a pretreatment mechanism is arranged in the treatment tank, sewage entering the treatment tank is treated through the pretreatment mechanism, the lower end of the pretreatment mechanism is connected with a transmission mechanism, the transmission mechanism is arranged in the treatment tank, both sides of the treatment tank are fixedly connected with an activation tank, the activation tank is communicated with the treatment tank, and the pretreatment mechanism is driven by the transmission mechanism to move between the treatment tank and the activation tank, A filler mechanism is arranged at the upper end of the activation tank, nutrient materials are filled into the activation tank through the filler mechanism, and the activation speed of the pretreatment mechanism entering the activation tank is accelerated, an aeration mechanism is arranged on the inside of the treatment tank, sewage entering the treatment tank is oxidized through the aeration mechanism, a T-shaped chute and a liquid storage cavity are formed in the upper end of the treatment tank, an exhaust hole is formed in the treatment tank and communicates the inside of the treatment tank with the T-shaped chute, a baffle is slidably connected in the T-shaped chute, a connecting motor is fixedly connected to the upper end of the treatment tank, the output end of the connecting motor is fixedly connected to the upper end of the baffle, and a first flexible hose is fixedly connected to the baffle. The other end of the first flexible hose is connected with a carbon dioxide detector, the carbon dioxide detector is fixedly connected to the upper end of the treatment tank, an arc-shaped piston rod is fixedly connected to one side of the baffle, one end of the arc-shaped piston rod is slidably connected in the liquid storage cavity, a connecting pipe is fixedly connected to the upper end of the treatment tank, a plurality of second flexible hoses are fixedly connected to the upper end of the connecting pipe, the second flexible hoses are connected with sealing mechanisms at the ends away from the connecting pipe, a plurality of the sealing mechanisms are arranged in the treatment tank, and an oxygen supply device is fixedly connected to the upper end of the activation tank.

[0007] Preferably, the pretreatment mechanism comprises a sliding seat movably connected in the treatment tank, two mounting cavities are formed in the sliding seat, a plurality of microbial membrane fillers are fixedly connected in the mounting cavities, a plurality of through grooves are formed in the upper end of the sliding seat, a plurality of clamping grooves are formed in the two sides of the sliding seat, and a connecting block is fixedly connected to the lower end of the sliding seat.

[0008] Preferably, the transmission mechanism comprises a lead screw movably connected to the inside of the treatment tank, one end of the lead screw is fixedly connected with the output end of a transmission motor, the transmission motor is fixedly connected to the outside of the treatment tank, and the connecting block is screwed to the outside of the lead screw.

[0009] Preferably, the filling mechanism comprises a storage hopper fixedly connected to the upper end of the activation tank, a plurality of feeding holes are formed in the upper end of the activation tank, the storage hopper is in communication with the treatment tank through the plurality of feeding holes, a tank cover is installed on the upper end of the storage hopper, a connecting shaft is fixedly connected to the lower end of the tank cover, a rotating disc is fixedly connected to the lower end of the connecting shaft, a plurality of through holes are formed in the upper end of the rotating disc, a plurality of stirring rods are fixedly connected to the outer side of the connecting shaft, the lower end of the rotating disc is in abutment with the upper end of the activation tank, and the upper end of the tank cover is fixedly connected with a first motor, and the output end of the first motor is fixedly connected with the connecting shaft.

[0010] Preferably, the aeration mechanism comprises an aeration pipe fixedly connected to the inner side of the treatment tank, one end of the aeration pipe extends into the external environment and is fixedly connected with the output end of an aeration blower, and the aeration blower is fixedly connected to the outer side of the treatment tank.

[0011] Preferably, the sealing mechanism comprises a T-shaped sealing plate slidingly connected in a sliding cavity formed in the treatment tank, and one end of the second flexible hose extends into the sliding cavity.

[0012] Compared with the prior art, the beneficial effects of the present application are that the gas in the treatment tank can be detected by the carbon dioxide detector through the rotation of the baffle, when the carbon dioxide content in the detected gas is low for multiple times, the pretreatment mechanism is moved by the transmission mechanism, so that the part activated in the activation tank enters the treatment tank for further sewage pretreatment, and the part in the treatment tank enters the activation tank, the nutrient substance is added into the activation tank by the filling mechanism, the microorganism is recovered from the dormant state and breeds in large quantities, and the activation of the microorganism is realized. BRIEF DESCRIPTION OF DRAWINGS

[0013] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed to be used in the embodiments or the prior art description will be briefly introduced below. Obviously, the drawings in the following description are only embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor on the basis of the provided drawings.

[0014] Figure 1 It is a three-dimensional structure schematic diagram of the present application.

[0015] Figure 2 It is a three-dimensional structure schematic diagram of the present application in the activation tank section state.

[0016] Figure 3 It is a three-dimensional structure schematic diagram of the present application in the rotating disc and the storage hopper separation state.

[0017] Figure 4It is a sectional view stereoscopic structure schematic diagram of the present application.

[0018] Figure 5 It is a sectional view stereoscopic structure schematic diagram of the present application.

[0019] Figure 6 It is a sectional view stereoscopic structure schematic diagram of the present application.

[0020] Figure 7 It is a sectional view stereoscopic structure schematic diagram of the present application.

[0021] Figure 8 It is a sectional view stereoscopic structure schematic diagram of the present application.

[0022] Figure 9 It is a sectional view stereoscopic structure schematic diagram of the present application.

[0023] In the figure: 1, processing box; 2, first circulating pump; 3, T-shaped sealing plate; 4, sedimentation tank; 5, aeration blower; 6, aeration pipe; 7, activation tank; 8, storage hopper; 9, box cover; 10, first motor; 11, second circulating pump; 12, carbon dioxide detector; 13, sliding connection cavity; 14, connecting motor; 15, connecting pipe; 16, sliding seat; 17, through slot; 18, mounting cavity; 19, clamping groove; 20, microbial membrane filler; 21, feed hole; 22, connecting shaft; 23, rotating disc; 24, stirring rod; 25, through hole; 26, exhaust hole; 27, second flexible hose; 28, lead screw; 29, baffle; 30, first flexible hose; 31, arc-shaped piston rod; 32, connecting block; 33, liquid storage cavity; 34, T-shaped sliding chute; 35, oxygen supply device. DETAILED DESCRIPTION

[0024] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the scope of protection of the present application.

[0025] As Figures 1-9 shown, the present application provides a technical solution: Embodiment 1 The utility model provides a sewage pretreatment device based on microbial activation, including processing box 1, one end of processing box 1 is fixedly connected with sediment tank 4, the inside bottom of sediment tank 4 is arranged in the shape of inclination, and the sewage is transported to sediment tank 4, because the inside bottom of sediment tank 4 is arranged in the shape of inclination, so the water source in sediment tank 4 moves from low place to high place, and the solid suspended matter in the water source gradually deposits on the bottom of sediment tank 4, the upper end of processing box 1 is fixedly connected with first circulating pump 2, the input end of first circulating pump 2 extends into sediment tank 4, and the output end extends into processing box 1, and the water source in sediment tank 4 enters processing box 1 by opening first circulating pump 2, one end of processing box 1 is fixedly connected with second circulating pump 11, the input end of second circulating pump 11 extends into processing box 1, and the inside of processing box 1 is equipped with pretreatment mechanism, the sewage in processing box 1 is treated by pretreatment mechanism, the lower end of pretreatment mechanism is connected with transmission mechanism, and transmission mechanism is arranged in processing box 1, and the both sides of processing box 1 are fixedly connected with activation tank 7, and activation tank 7 is communicated with processing box 1, and pretreatment mechanism is moved between processing box 1 and activation tank 7 by transmission mechanism, The upper end of activation tank 7 is equipped with filler mechanism, and the filler mechanism fills nutrient material in activation tank 7, so as to accelerate the activation speed of pretreatment mechanism in activation tank 7, the nutrient material can be selected from brown sugar or molasses, amino acid, urea and other substances that can provide carbon source and nitrogen source required for microbial growth, the inside of processing box 1 is equipped with aeration mechanism, and the sewage in processing box 1 is oxidized by aeration mechanism, the upper end of processing box 1 is provided with T-shaped chute 34 and liquid storage chamber 33, the inside of processing box 1 is provided with exhaust hole 26, and the inside of T-shaped chute 34 is slidably connected with baffle 29, the upper end of baffle 29 is fixedly connected with connecting motor 14, and the output end of connecting motor 14 is fixedly connected with baffle 29, and the first telescopic hose 30 is fixedly connected in baffle 29, and when connecting motor 14 stops rotating, it will be in self-locking state; The other end of first telescopic hose 30 is connected with carbon dioxide detector 12, and carbon dioxide detector 12 is fixedly connected to the upper end of processing box 1, and when selecting carbon dioxide detector 12, the equipment capable of detecting the carbon dioxide content in gas should be selected, such as the carbon dioxide analyzer produced by Sifang Optoelectronic Instrument Co., Ltd., and the model is Gasboard-3000GHG, because the microorganism produces carbon dioxide gas when treating sewage, and when using, the opening interval of carbon dioxide detector 12 is controlled by the processor, and the detection frequency after each opening is controlled, and the carbon dioxide content in processing box 1 is detected by multiple times, and the activity of microorganism is judged; The baffle plate 29 is fixedly connected with an arc-shaped piston rod 31 on one side, one end of the arc-shaped piston rod 31 is slidably connected in a liquid storage cavity 33, the treatment box 1 is fixedly connected with a connecting pipe 15 at the upper end, a plurality of second telescopic hoses 27 are fixedly connected to the connecting pipe 15 at the upper end, the second telescopic hoses 27 are connected with the sealing mechanism at the end away from the connecting pipe 15, a plurality of sealing mechanisms are arranged in the treatment box 1, an oxygen supply device 35 is fixedly connected to the upper end of the activation box 7, the oxygen supply device 35 should be selected to be a machine capable of supplying oxygen and circulating gas for use, so that the gas generated by the microorganisms can be discharged from the activation box 7 while supplying oxygen to the activation box 7, and in order to improve the activation speed of the microorganisms in the activation box 7, a heating assembly can be added to the side wall of the activation box 7, so that the inside of the activation box 7 can maintain a certain temperature.

[0026] Embodiment 2: On the basis of embodiment 1, in order to make the sewage entering the treatment box 1 contain more oxygen, the aeration mechanism includes an aeration pipe 6, a plurality of hole holes for discharging gas are formed in the upper end of the aeration pipe 6, the aeration pipe 6 is fixedly connected to the inside of the treatment box 1, one end of the aeration pipe 6 extends into the external environment and is fixedly connected with the output end of the aeration blower 5, the aeration blower 5 is fixedly connected to the outside of the treatment box 1, by opening the first circulating pump 2, the water in the sedimentation tank 4 enters the treatment box 1, the aeration blower 5 is opened to deliver gas into the aeration pipe 6, and the gas is discharged through the aeration pipe 6 and mixed with the sewage; The pretreatment mechanism includes a sliding seat 16 movably connected in the treatment box 1, two installation cavities 18 are formed in the sliding seat 16, a plurality of microbial membrane fillings 20 are fixedly connected in the installation cavities 18, a plurality of through grooves 17 are formed in the upper end of the sliding seat 16, a plurality of clamping grooves 19 are formed in the two sides of the sliding seat 16, a connecting block 32 is fixedly connected to the lower end of the sliding seat 16, the transmission mechanism includes a lead screw 28 movably connected to the inside of the treatment box 1, one end of the lead screw 28 is fixedly connected with the output end of a transmission motor, the transmission motor is fixedly connected to the outside of the treatment box 1, the connecting block 32 is screwed to the outside of the lead screw 28, the sliding seat 16 is moved along the treatment box 1 and the activation box 7 by driving the connecting block 32 to move through the lead screw 28, the installation cavities 18 located in the treatment box 1 enter the activation box 7, and the plurality of microbial membrane fillings 20 activated in the activation box 7 enter the treatment box 1; The filling mechanism comprises a storage hopper 8 fixedly connected to the upper end of the activation box 7, the upper end of the activation box 7 being provided with a plurality of feeding holes 21, the storage hopper 8 being in communication with the treatment box 1 through the plurality of feeding holes 21, the upper end of the storage hopper 8 being provided with a box cover 9, the lower end of the box cover 9 being fixedly connected with a connecting shaft 22, the lower end of the connecting shaft 22 being fixedly connected with a rotating disc 23, the upper end of the rotating disc 23 being provided with a plurality of through holes 25, the outer side of the connecting shaft 22 being fixedly connected with a plurality of stirring rods 24, the lower end of the rotating disc 23 being in abutment with the upper end of the activation box 7, the upper end of the box cover 9 being fixedly connected with a first motor 10, and the output end of the first motor 10 being fixedly connected with the connecting shaft 22.

[0027] The sealing mechanism comprises a T-shaped sealing plate 3 slidably connected in a sliding cavity 13 provided in the treatment box 1, one end of the second flexible hose 27 extending into the sliding cavity 13, the baffle 29 being rotated clockwise to drive the arc-shaped piston rod 31 to move, the arc-shaped piston rod 31 pushing the hydraulic oil in the liquid storage cavity 33 into the connecting pipe 15, and then into the plurality of second flexible hoses 27, the hydraulic oil entering the sliding cavity 13 to drive the T-shaped sealing plate 3 to be clamped in the clamping groove 19 to limit the sliding seat 16 and seal the connection between the activation box 7 and the treatment box 1.

[0028] The working principle is that when in use, the sewage is delivered to the sedimentation tank 4, and since the inner bottom of the sedimentation tank 4 is inclined, the water source entering the sedimentation tank 4 will move from low to high, and the solid suspended matter in the water source will gradually precipitate at the bottom of the sedimentation tank 4, the water source in the sedimentation tank 4 is delivered into the treatment box 1 by opening the first circulating pump 2, the gas is delivered into the aeration pipe 6 by opening the aeration blower 5, the gas is discharged through the aeration pipe 6 and mixed with the sewage, and then the sewage passes through the plurality of microbial membrane fillings 20, the microorganisms in the plurality of microbial membrane fillings 20 treat the sewage to achieve the pretreatment of the sewage, and the pretreated sewage is discharged from the treatment box 1 by the second circulating pump 11. During the process of treating wastewater by microorganisms in the microbial membrane packing 20, the carbon dioxide produced will be discharged into the external environment through the vent 26. When the set detection time is reached, the connecting motor 14 will start and drive the baffle 29 to move. When the baffle 29 moves to the upper end of the vent 26, the connecting motor 14 will stop. The carbon dioxide in the treatment tank 1 will enter the first telescopic hose 30 through the vent 26. At the same time, when the baffle 29 rotates, it will drive the arc piston rod 31 to move along the liquid storage chamber 33. The movement of the arc piston rod 31 will draw the hydraulic oil that has entered the sliding cavity 13 back into the liquid storage chamber 33. Since the T-shaped sealing plate 3 is tightly attached to the sliding cavity 13, the T-shaped sealing plate 3 will be stored in the sliding cavity 13 during the process of hydraulic oil being drawn out, so that its locking end will be disengaged from the locking groove 19 on both sides of the slide seat 16, thus canceling the limitation on the slide seat 16. The gas entering the first telescopic hose 30 is drawn into the hose by the carbon dioxide detector 12, and the carbon dioxide content is detected. When the content detected multiple times is lower than the set value, the drive motor connected to the lead screw 28 will drive the lead screw 28 to rotate. The lead screw 28 drives the connecting block 32 to move, causing the slide 16 to move between the processing box 1 and the activation box 7. The installation cavity 18 in the processing box 1 will enter the activation box 7, and several activated microbial membrane packings 20 in the activation box 7 will enter the processing box 1. During the process of the installation cavity 18 in the processing box 1 entering the activation box 7, one end of the slide 16 will enter the activation box 7. The activation tank 7 and the treatment tank 1 are in a connected state. The sewage entering the treatment tank 1 enters the activation tank 7 through the installation cavity 18. When the installation cavity 18 is completely inserted into the activation tank 7, the partition between the two installation cavities 18 will block the connection between the activation tank 7 and the treatment tank 1. At this time, the first motor 10 starts to make the turntable 23 rotate. Under the stirring of several stirring rods 24, when the through hole 25 is aligned with the feed hole 21, the nutrient material in the storage hopper 8 will enter the activation tank 7 and pass through several through grooves 17 to mix with the sewage in the activation tank 7, which will accelerate the reproduction speed of microorganisms on the surface of the microbial membrane packing 20 and achieve the activation effect. When the several microbial membrane fillings 20 in the activation box 7 enter into the treatment box 1, the water source in the activation box 7 is pushed into the treatment box 1 for treatment, when the switching is completed, the connecting motor 14 is started to drive the baffle 29 to rotate clockwise to the initial position, at this time, the carbon dioxide gas in the treatment box 1 can be discharged into the external environment through the exhaust hole 26, and when the baffle 29 rotates clockwise, the arc-shaped piston rod 31 is moved, the arc-shaped piston rod 31 pushes the hydraulic oil in the liquid storage cavity 33 into the connecting pipe 15, and then into the several second telescopic hoses 27, the hydraulic oil enters the sliding cavity 13 to push the T-shaped sealing plate 3 to be clamped into the clamping groove 19 to limit the sliding seat 16, and to seal the connection between the activation box 7 and the treatment box 1.

[0029] The above description of the embodiments is only used to help understand the method of the present application and its core idea. It should be noted that for those skilled in the art, without departing from the principles of the present application, some improvements and modifications can be made to the present application, and these improvements and modifications also fall within the protection scope of the claims of the present application.

Claims

1. A wastewater pretreatment device based on microbial activation, comprising a treatment tank, characterized in that: A sedimentation tank is fixedly connected to one end of the treatment tank. The bottom of the sedimentation tank is inclined. A first circulation pump is fixedly connected to the upper end of the treatment tank. The input end of the first circulation pump extends into the sedimentation tank, and the output end extends into the treatment tank. A second circulation pump is fixedly connected to one end of the treatment tank. The input end of the second circulation pump extends into the treatment tank. A pretreatment mechanism is provided inside the treatment tank to treat the wastewater entering the treatment tank. The lower end of the pretreatment mechanism is connected to a transmission mechanism, which is located inside the treatment tank. Activation tanks are fixedly connected to both sides of the treatment tank. The activation tanks are connected to the treatment tank and move between the treatment tank and the activation tank via the transmission mechanism. The activation tank is equipped with a packing mechanism at its upper end. Nutrients are added to the activation tank through the packing mechanism to accelerate the activation speed of the pretreatment mechanism entering the activation tank. An aeration mechanism is provided inside the treatment tank to oxidize the wastewater entering the treatment tank. A T-shaped chute and a liquid storage chamber are provided at the upper end of the treatment tank. An exhaust hole is provided inside the treatment tank to connect the inner side of the treatment tank with the T-shaped chute. A baffle is slidably connected inside the T-shaped chute. A connecting motor is fixedly connected to the upper end of the treatment tank. The output end of the connecting motor is fixedly connected to the upper end of the baffle. A first telescopic hose is fixedly connected inside the baffle. The other end of the first telescopic hose is connected to a carbon dioxide detector, which is fixedly connected to the upper end of the processing tank. An arc-shaped piston rod is fixedly connected to one side of the baffle, and one end of the arc-shaped piston rod slides into the liquid storage chamber. A connecting pipe is fixedly connected to the upper end of the processing tank, and several second telescopic hoses are fixedly connected to the upper end of the connecting pipe. The end of the second telescopic hose away from the connecting pipe is connected to a sealing mechanism. Several sealing mechanisms are arranged inside the processing tank. An oxygen supply unit is fixedly connected to the upper end of the activation tank.

2. The wastewater pretreatment device based on microbial activation according to claim 1, characterized in that: The pretreatment mechanism includes a slide block, which is movably connected to the treatment box. The slide block has two mounting cavities, and several microbial membrane packing materials are fixedly connected in the mounting cavities. Several through grooves are provided at the upper end of the slide block, and several snap-fit ​​grooves are provided on both sides of the slide block. A connecting block is fixedly connected to the lower end of the slide block.

3. The wastewater pretreatment device based on microbial activation according to claim 2, characterized in that: The transmission mechanism includes a lead screw, which is movably connected to the inside of the processing box. One end of the lead screw is fixedly connected to the output end of a transmission motor, and the transmission motor is fixedly connected to the outside of the processing box. The connecting block is screwed to the outside of the lead screw.

4. The wastewater pretreatment device based on microbial activation according to claim 1, characterized in that: The filling mechanism includes a storage hopper, which is fixedly connected to the upper end of the activation box. The upper end of the activation box has several feed holes, and the storage hopper is connected to the processing box through the feed holes. A box cover is installed on the upper end of the storage hopper, and a connecting shaft is fixedly connected to the lower end of the box cover. A turntable is fixedly connected to the lower end of the connecting shaft, and several through holes are opened on the upper end of the turntable. Several stirring rods are fixedly connected to the outer perimeter of the connecting shaft. The lower end of the turntable is in contact with the upper end of the activation box. A first motor is fixedly connected to the upper end of the box cover, and the output end of the first motor is fixedly connected to the connecting shaft.

5. A wastewater pretreatment device based on microbial activation according to claim 1, characterized in that: The aeration mechanism includes an aeration pipe, which is fixedly connected to the inside of the treatment box. One end of the aeration pipe extends into the external environment and is fixedly connected to the output end of an aeration blower. The aeration blower is fixedly connected to the outside of the treatment box.

6. The wastewater pretreatment device based on microbial activation according to claim 1, characterized in that: The sealing mechanism includes a T-shaped sealing plate, which slides in a sliding cavity located inside the processing box. One end of the second telescopic hose extends into the sliding cavity.

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