Biodecomposition-based polypropylene production wastewater purification treatment equipment

Abstract

The application discloses a kind of based on biological decomposition's polypropylene production sewage purification treatment equipment, belong to sewage treatment device technical field, including degradation pond and the aeration pipe being set in degradation pond, multiple aeration heads are installed on aeration pipe, the detection component is arranged at one end in the degradation pond;The detection component includes square frame and the connecting plate being arranged below square frame, the connecting plate is connected with square frame by standpipe intercommunication, and square frame slides between the guide rail of degradation pond top end two sides;Detection component can be moved along the length direction of degradation pond by drive component, to detect the aeration head on aeration pipe, and, when detection component detects that aeration head fails and cannot generate bubble, drive component can also promote detection component to supplement gas at the position where aeration head is damaged, so as to facilitate the uniform distribution of gas in degradation pond, facilitate microorganism to fully decompose organic matter.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of sewage treatment devices, and particularly relates to a polypropylene production sewage purification treatment equipment based on biological decomposition. BACKGROUND

[0002] General municipal sewage mainly contains easily degradable organic matter, so most municipal sewage treatment plants use aerobic biological treatment method.

[0003] Chinese patent CN119349783B discloses a municipal sewage treatment device, which is driven to move by the movable seat, drives the injection pipe to move, drives the straight gear to move along the outer wall of the tooth plate, and drives the straight gear to rotate, and the straight gear drives the injection pipe to rotate. The oxygen in the gas inlet pipe moves to the cross rod, when the gas inlet moves to the movable seat, the C-shaped block cancels the shielding of the gas inlet, the oxygen is sprayed out through the air jet, and the air jet sprays oxygen into the degradation tank.

[0004] The above device drives the aeration mechanism to move horizontally in the degradation tank to promote uniform distribution of oxygen, and provides gas for the aeration mechanism through the cross rod, but in actual use, the cross rod is prone to air leakage, which affects the flow of air, and when the aeration port on the rotating disc is blocked or aged, it will affect the generation of bubbles, and the above structure is difficult to cope with such problems.

[0005] Therefore, it is necessary to provide a polypropylene production sewage purification treatment equipment based on biological decomposition to solve the above technical problems. SUMMARY

[0006] The present application aims to provide a polypropylene production sewage purification treatment equipment based on biological decomposition to solve the problem that the existing device promotes uniform distribution of oxygen by driving the aeration mechanism to move horizontally in the degradation tank, but when the aeration port on the rotating disc is blocked or aged, it will affect the generation of bubbles.

[0007] Based on the above idea, the present application provides the following technical scheme: a polypropylene production sewage purification treatment equipment based on biological decomposition, comprising a degradation tank and an aeration pipe arranged in the degradation tank, a plurality of aeration heads are installed on the aeration pipe, and a detection assembly is arranged at one end inside the degradation tank.

[0008] The detection assembly comprises a square frame and a connecting plate arranged below the square frame, the connecting plate is communicated with the square frame through a vertical pipe, the square frame slides between the guide rails on both sides of the top end of the degradation tank, and a detection unit is fixedly installed at the bottom of the connecting plate, when the square frame is driven to move by the driving assembly above the degradation tank, the detection unit can detect the bubbles at the aeration head, when the detection unit detects that no bubbles are generated at the aeration head, the detection assembly provided with the detection unit is locked with the guide rail, so that the driving assembly can generate bubbles through the aeration holes on the connecting plate during movement.

[0009] As a further scheme of the present application: limit plates are fixedly arranged at both sides of the square frame, the limit plates are in sliding cooperation with the guide rails, a sub-electromagnet is arranged on the side, away from the guide rail, of the limit plate, the detection unit is electrically connected with the sub-electromagnet, a pressing plate is arranged between the sub-electromagnet and the limit plate, the pressing plate is made of iron and elastically cooperates with the sub-electromagnet, a positioning block is integrally formed on the pressing plate, a plurality of positioning holes are formed in the guide rail, the plurality of positioning holes are arranged in one-to-one correspondence with the aeration heads, when the detection unit detects that no bubbles are generated above the aeration head, the detection unit can control the sub-electromagnet to be in a de-energized state, so that the positioning block is popped out and cooperates with the positioning hole.

[0010] As a further scheme of the present application: a sealing block is slidably arranged in the square frame, a lifting column is fixedly arranged on the top surface of the sealing block, and a rotating drum is sleeved on the outer side of the lifting column, the rotating drum can drive the lifting column to reciprocally move in the vertical direction during rotation.

[0011] As a further scheme of the present application: the driving assembly comprises a chain arranged above the degradation tank, a sleeve ring is rotatably sleeved on the outer side of the rotating drum, a sprocket engaged with the chain is fixedly sleeved on the outer side of the sleeve ring, a plurality of clamping grooves are uniformly formed in the inner wall of the sleeve ring, a clamping block elastically connected with the clamping groove is arranged on the wall of the rotating drum, a main electromagnet is arranged at the top end position of the rotating drum, and a magnetic plate is arranged below the main electromagnet, when the main electromagnet is in an energized state, the opposite side of the main electromagnet and the magnetic plate has the same magnetic pole, a pressing block is arranged at the end, away from the sleeve ring, of the clamping block, the side, close to the clamping block, of the pressing block is a slope, and the pressing block is fixedly connected with the magnetic plate through a connecting rod.

[0012] As a further scheme of the present application: the aeration holes are arranged at the positions on both sides of the top of the connecting plate.

[0013] As a further scheme of the present application: the outer side of the rotating drum is sleeved with a supporting ring through a tapered roller bearing, and the supporting ring is fixedly arranged inside the square frame through a supporting rod.

[0014] As a further scheme of the present application: the limiting plate is elastically connected with a pressing rod through a tension spring, a notch is formed in the guide rail and matched with the pressing rod, and the end of the pressing rod inserted into the notch is in spherical surface structure.

[0015] As a further scheme of the present application: motors are arranged at both ends of the degradation tank for driving the chain to rotate.

[0016] As a further scheme of the present application: a ring-shaped limiting groove is formed in the outer circumferential wall of the lifting column and is obliquely arranged, and a protrusion is fixedly arranged on the inner wall of the rotating drum and is in sliding cooperation with the limiting groove.

[0017] Compared with the prior art, the present application has the beneficial effects that: the detection assembly can be moved along the length direction of the degradation tank by the driving assembly, so that the aeration head on the aeration pipe is detected, and when the detection assembly detects that the aeration head fails to generate bubbles, the detection assembly can be prompted by the driving assembly to supplement gas at the position where the aeration head is damaged, so that the uniform distribution of gas in the degradation tank is facilitated, and the microorganisms are facilitated to fully decompose the organic matter. BRIEF DESCRIPTION OF DRAWINGS

[0018] The present application is further described below in combination with the drawings and embodiments.

[0019] Figure 1 is a schematic diagram of the overall structure of the present application;

[0020] Figure 2 is a schematic diagram of the overall structure of the present application;

[0021] Figure 3 is a schematic diagram of the detection assembly and the aeration head of the present application;

[0022] Figure 4 is a schematic diagram of the chain wheel and the rotating drum connection structure of the present application;

[0023] Figure 5 is a schematic diagram of the protrusion and the lifting column cooperation of the present application;

[0024] Figure 6 is a schematic diagram of the internal structure of the square frame of the present application;

[0025] Figure 7 is a schematic diagram of the internal structure of the square frame of the present application; Figure 4

[0026] Figure 8 is a schematic diagram of the internal structure of the square frame of the present application; Figure 6

[0027] is a schematic diagram of the internal structure of the square frame of the present application; Figure 9 is a schematic diagram of the internal structure of the square frame of the present application;​

[0028] Figure 10 Figure is a schematic diagram of the pressure rod structure of the present application.

[0029] In the figure: 1, degradation tank; 2, aeration pipe; 201, aeration head; 3, connecting pipe; 4, sprocket; 5, chain; 6, guide rail; 601, positioning hole; 602, notch; 7, rotating drum; 701, protrusion; 702, support ring; 8, connecting plate; 801, aeration hole; 802, detection unit; 9, baffle; 10, square frame; 1001, limiting plate; 11, vertical pipe; 12, cover plate; 1201, auxiliary electromagnet; 1202, pressing plate; 1203, positioning block; 13, box body; 14, collar; 1401, clamping groove; 15, lifting column; 1501, limiting groove; 16, sealing block; 17, main electromagnet; 18, magnetic plate; 19, clamping block; 1901, protrusion; 20, control switch; 21, pressing block; 2101, inclined surface; 22, pressure rod; 23, flow guide channel. DETAILED DESCRIPTION

[0030] As Figures 1-10 shown, a polypropylene production wastewater purification treatment equipment based on biological decomposition includes a degradation tank 1 and an aeration pipe 2 arranged in the degradation tank 1, and an aeration head 201 is installed on the aeration pipe 2. This structure is conducive to exposing air into the degradation tank 1, thereby providing oxygen for the microorganisms in the degradation tank 1, and facilitating the decomposition of organic matter in the wastewater by the microorganisms, as shown in Figure 1 shown, a plurality of connecting pipes 3 are arranged on one side of the degradation tank 1. Some of the connecting pipes 3 can be connected to the aeration pipe 2, and the other connecting pipes 3 can be used to guide the wastewater into the degradation tank 1. Of course, a drainage pipe and other structures are also arranged on the degradation tank 1.

[0031] As shown in Figures 1-2 shown, the aeration head 201 is distributed along the axis direction of the aeration pipe 2 and is provided with a plurality of aeration heads. This is convenient for uniformly providing oxygen to the degradation tank 1. However, when some aeration head 201 cannot guide gas due to blockage or component aging, the air in the degradation tank 1 may not be uniformly distributed. Therefore, a detection assembly is arranged at one end of the degradation tank 1. The detection assembly is provided with at least one group, and the detection assembly can be moved along the length direction of the degradation tank 1 by a driving assembly arranged at the top end of the degradation tank 1. When the detection assembly detects that some aeration head 201 is damaged or blocked, the detection assembly can be retained above the aeration head 201, and the detection assembly can be aerated by the driving assembly during movement, thereby maximizing the uniform distribution of oxygen in the degradation tank 1.

[0032] Referring to 1- Figure 8As shown, the detection assembly includes a square frame 10 and a connecting plate 8 arranged below the square frame 10, the connecting plate 8 is a hollow structure, and a vertical pipe 11 is fixed between the connecting plate 8 and the square frame 10, both ends of the vertical pipe 11 are communicated with the connecting plate 8 and the square frame 10, and a detection unit 802 is fixedly installed at the bottom of the connecting plate 8, the detection unit 802 can be an ultrasonic bubble sensor, when the square frame 10 is moved by the driving assembly, the ultrasonic bubble sensor can detect the bubbles at the aeration head 201.

[0033] In order to enable the square frame 10 to move stably, guide rails 6 are arranged at both sides of the square frame 10, and the guide rails 6 are fixedly connected with the degradation tank 1 through bolts, and limit plates 1001 are fixedly arranged at both sides of the square frame 10, and the limit plates 1001 are in sliding fit with the guide rails 6.

[0034] In order to enable the square frame 10 to stay above the damaged or blocked aeration head 201, a sub-electromagnet 1201 is arranged on the side of the limit plate 1001 away from the guide rail 6, the detection unit 802 is electrically connected with the sub-electromagnet 1201, and a pressing plate 1202 is arranged between the sub-electromagnet 1201 and the limit plate 1001, and the pressing plate 1202 is in sliding fit with the limit plate 1001. Figure 7 As shown, the pressing plate 1202 is integrally formed with a positioning block 1203, the positioning block 1203 penetrates through the limit plate 1001 and is in sliding fit with the limit plate 1001, the pressing plate 1202 is made of iron and is in elastic fit with the sub-electromagnet 1201 through a spring, and the sub-electromagnet 1201 is in electrically connected with the detection unit 802. Figures 1-2 、 Figure 7 As shown, the guide rail 6 has an L-shaped structure in cross section, and a plurality of positioning holes 601 are uniformly arranged on the surface of the guide rail 6 abutting with the square frame 10, the plurality of positioning holes 601 are arranged one by one corresponding to the plurality of aeration heads 201, when the square frame 10 is moved to above the aeration head 201 by the driving assembly, the bubbles can be detected by the detection unit 802, when the detection unit 802 detects that no bubbles are generated above the aeration head 201, the sub-electromagnet 1201 is controlled to be in a de-energized state by the detection unit 802, and the positioning block 1203 is also popped out, when the positioning block 1203 is aligned with the positioning hole 601, one end of the positioning block 1203 can be inserted into the positioning hole 601, so that the square frame 10 and other structures are retained above the damaged or blocked aeration head 201.

[0035] In order to detect the effect of the assembly can reach aeration, the sealing block 16 is arranged in the square frame 10, of course, the sealing block 16 and the square frame 10 are sealingly connected, and the top surface of the sealing block 16 is fixedly provided with a lifting column 15 at the central position, the outer side of the lifting column 15 is sleeved with a rotating drum 7, and the rotating drum 7 can drive the lifting column 15 to reciprocate in the vertical direction in the process of rotation, so that air can be continuously sucked into the square frame 10 and discharged through the aeration holes 801 on the connecting plate 8.

[0036] With reference to the drawings Figures 5-6 As shown, the outer side of the lifting column 15 is provided with an annular limiting groove 1501, and the limiting groove 1501 is inclined, and the inner wall of the rotating drum 7 is fixedly provided with a protrusion 701 matched with the limiting groove 1501, so that the protrusion 701 can slide in the limiting groove 1501, and the lifting column 15 can be driven to reciprocate up and down by this way.

[0037] The driving assembly includes a chain 5 arranged above the degradation tank 1, and the outer side of the rotating drum 7 is rotatably sleeved with a sleeve ring 14 through a bearing, the outer side of the sleeve ring 14 is fixedly sleeved with a sprocket 4 engaged with the chain 5, and in actual use, the sprocket 4 is engaged with only one side of the chain 5. Figures 6-8 As shown, a plurality of clamping grooves 1401 are uniformly arranged in the inner wall of the sleeve ring 14, and the drum wall of the rotating drum 7 is elastically connected with a clamping block 19 matched with the clamping grooves 1401, the top end position of the rotating drum 7 is provided with a main electromagnet 17, and the lower position of the main electromagnet 17 is provided with a magnetic plate 18. Figure 8As can be seen, the end of the clamping block 19 away from the sleeve ring 14 is provided with a pressing block 21, the side of the pressing block 21 close to the clamping block 19 is a slope 2101, and the pressing block 21 and the magnetic plate 18 are fixedly connected through a connecting rod. In the initial state, the main electromagnet 17 is in a de-energized state, so that the clamping block 19 and the clamping groove 1401 are not matched. At this time, the chain 5 only drives the sprocket 4 and the sleeve ring 14 to rotate during rotation. When the main electromagnet 17 is energized by the worker, the pressing block 21 is pressed downward through repulsion, so as to press the clamping block 19 outward through the slope 2101, so that one end of the clamping block 19 can be inserted into the clamping groove 1401. At this time, the sleeve ring 14 can drive the rotating drum 7 to rotate synchronously. However, since the square frame 10 is not locked with the guide rail 6, the square frame 10 can be pulled to slide along the guide rail 6 through the cooperation of the chain 5 and the sprocket 4. When the positioning block 1203 cooperates with the positioning hole 601 to lock the square frame 10 with the guide rail 6, the rotating drum 7 can be driven to rotate relative to the square frame 10 through the cooperation of the chain 5 and the sprocket 4, so as to drive the lifting column 15 to reciprocate in the vertical direction through the cooperation of the protrusion 701 and the limiting groove 1501. This is beneficial to draw the external air into the square frame 10 and finally guide the air out through the aeration holes 801 on the connecting plate 8.

[0038] Referring to Figure 6 As shown in the drawings, the lifting column 15 and the sealing block 16 are provided with a communication flow guide channel 23, and a first one-way valve (not shown in the drawings) is installed in the flow guide channel 23, so that the external gas can only flow to the sealing block 16 and the standpipe 11 through the first one-way valve. The standpipe 11 is provided with a second one-way valve (not shown in the drawings), so that the gas below the sealing block 16 can only be guided out through the second one-way valve.

[0039] Working principle: initially, the detection assembly is located at one end of the degradation tank 1, and the main electromagnet 17 at the detection assembly is in a de-energized state, so that the clamping block 19 does not cooperate with the clamping groove 1401, therefore, the chain 5 will not move when rotating, when it is necessary to detect the aeration head 201, the staff can control the main electromagnet 17 on the detection assembly at the front to be in an energized state, so that the clamping block 19 on the detection assembly can cooperate with the clamping groove 1401, at this time, the chain 5 can drive the sprocket 4 to move in the process of rotating (because the friction between the sealing block 16 and the inner wall of the square frame 10 is large, therefore, the chain 5 will not make the rotating drum 7 rotate in the process of cooperating with the sprocket 4, but drive the square frame 10 and other structures to slide along the guide rail 6), when the square frame 10 moves to a position above a certain aeration head 201, the detection unit 802 at the bottom of the connecting plate 8 can detect the bubbles, when the aeration head 201 is blocked or fails to generate bubbles, the detection unit 802 at the bottom of the connecting plate 8 can make the auxiliary electromagnet 1201 on the detection assembly be in a de-energized state, so that the positioning block 1203 can be popped out, and with the movement of the square frame 10, one end of the positioning block 1203 can be inserted into the positioning hole 601, so that the square frame 10 can be clamped on the guide rail 6, at this time, the chain 5 can drive the sprocket 4 and the rotating drum 7 to rotate in the process of rotating, so as to drive the lifting column 15 to reciprocate in the vertical direction through the cooperation of the protrusion 701 and the limiting groove 1501, specifically, when the lifting column 15 moves upward, the external gas can flow to the position below the sealing block 16 through the first one-way valve, and when the lifting column 15 moves downward, the gas below the sealing block 16 can be extruded into the connecting plate 8 through the second one-way valve and finally discharged through the aeration hole 801, which is beneficial to supplement oxygen at the damaged or blocked aeration head 201, so that the oxygen in the degradation tank 1 can be uniformly distributed.

[0040] In summary, the device can drive the detection assembly to move along the length direction of the degradation tank 1 through the driving assembly, so as to detect the aeration head 201 on the aeration pipe 2, and when the detection assembly detects that the aeration head 201 fails to generate bubbles, the driving assembly can also make the detection assembly supplement gas at the position where the aeration head 201 is damaged, so as to facilitate the uniform distribution of gas in the degradation tank 1 and facilitate the microorganisms to fully decompose the organic matter.

[0041] As Figures 1-10As shown, motors are arranged at both ends of the degradation tank 1, drive sprockets are installed on output shafts of the motors, chains 5 are sleeved on the two drive sprockets to drive the chains 5 to rotate, the chains 5 can be arranged on the guide rails 6, and in order to enable the chains 5 on one side to stably cooperate with the sprockets 4, a baffle 9 is fixedly arranged at the top of one of the guide rails 6, and the chains 5 on the side cooperating with the sprockets 4 are between the baffle 9 and the sprockets 4.

[0042] With reference to Figure 3 As shown, the aeration holes 801 are distributed at positions on both sides of the top of the connecting plate 8, a cover plate 12 is fixedly arranged at an inner side position of the limiting plate 1001, and the cover plate 12 is provided with a plurality of aeration holes 801. Figures 3-4 、 Figure 7 As shown, the auxiliary electromagnet 1201 is fixedly installed in the cover plate 12, and the pressing plate 1202 is slidingly arranged in the cover plate 12.

[0043] With reference to Figures 4-9 As shown, the outer side of the rotating drum 7 is sleeved with a support ring 702 through a tapered roller bearing, the support ring 702 is fixed to the inside of the square frame 10 through a support rod, a box body 13 is arranged at the top end position of the rotating drum 7, the box body 13 is fixedly connected with the rotating drum 7 through a fixing rod, the main electromagnet 17 is fixedly installed at the top end position inside the box body 13, the connecting rod passes through the box body 13 and slidingly cooperates with the box body 13, and the magnetic plate 18 and the inner bottom surface of the box body 13 are fixedly provided with a support spring, so that the magnetic plate 18 and the box body 13 are elastically matched.

[0044] In order to realize the elastic cooperation between the clamping block 19 and the rotating drum 7, convex blocks 1901 are fixedly arranged at the top surface and the bottom surface of the clamping block 19, T-shaped sliding rods matched with the convex blocks 1901 are fixedly arranged at the inner wall of the rotating drum 7, the T-shaped sliding rods pass through the convex blocks 1901 and slidingly cooperate with the convex blocks 1901, and the convex blocks 1901 and the inner wall of the rotating drum 7 are provided with limiting springs, so that in the initial state, one end of the clamping block 19 can be retracted into the rotating drum 7.

[0045] With reference to Figures 1-6As shown, to avoid interference between multiple detection components during operation, this solution installs a control switch 20 on one side of the square frame 10 via a support rod. The control switch 20 is electrically connected to the auxiliary electromagnet 1201. When the control switch 20 is pressed, the auxiliary electromagnet 1201 is energized. This control switch 20 and the detection unit 802 can be connected in parallel to the control circuit of the auxiliary electromagnet 1201. Specifically, when one set of detection components is engaged between the two guide rails 6 and the chain 5 simultaneously drives another set of detection components to move, the rear square frame 10 will touch the control switch 20 on the front square frame 10. 0, thereby energizing the auxiliary electromagnet 1201 on the front detection component, so that one end of the positioning block 1203 can move out of the positioning hole 601, allowing the chain 5 to drive both detection components to move simultaneously. When the positioning block 1203 on the rear detection component aligns with the positioning hole 601, the rear detection component can be engaged between the two guide rails 6, while the front detection component continues to move with the chain 5 until it is engaged above another damaged aeration head 201. In summary, this method enables multiple detection components to work simultaneously, and this device is also applicable when more than one aeration head 201 is damaged.

[0046] Reference Figure 4 , Figure 10 As shown, a pressure rod 22 is elastically connected to the limiting plate 1001 via a tension spring, and a slot 602 is provided on the guide rail 6 to cooperate with the pressure rod 22. One end of the pressure rod 22 inserted into the slot 602 has a spherical structure. When the rotating drum 7 is not locked with the collar 14, the chain 5 can stably drive the collar 14 to rotate without causing the detection component to move laterally during the engagement with the sprocket 4. When the collar 14 is locked with the rotating drum 7, allowing the detection component to move laterally, one end of the pressure rod 22 can be moved out of the slot 602, and then combined with... Figure 6 As shown, in actual use, the support ring 702 and the rotating drum 7 can also maintain the stability between the rotating drum 7 and the support ring 702 through a similar structure of the pressure rod 22 and the slot 602, so that when the square frame 10 is not locked with the guide rail 6, the detection component can be driven to move laterally through the cooperation of the chain 5 and the sprocket 4.

Claims

1. A sewage purification treatment device based on biodegradation of polypropylene production, comprising a degradation tank and an aeration pipe arranged in the degradation tank, a plurality of aeration heads being installed on the aeration pipe, characterized in that: The detection assembly is arranged at one end of the degradation tank. The detection assembly includes a square frame and a connecting plate arranged below the square frame. The connecting plate and the square frame are connected through a vertical pipe. The square frame slides between the guide rails at the two sides of the top end of the degradation tank. A detection unit is fixedly installed at the bottom of the connecting plate. When the square frame is moved by the driving assembly above the degradation tank, the detection unit can detect the bubbles at the aeration head. When the detection unit detects that no bubbles are generated at the aeration head, the detection assembly with the detection unit is locked with the guide rails, so that the driving assembly can generate bubbles through the aeration holes on the connecting plate during movement. Limiting plates are fixedly arranged at the positions of the two sides of the square frame. The limiting plates slide with the guide rails. A sub-electromagnet is arranged at the side of the limiting plate away from the guide rail. The detection unit is electrically connected with the sub-electromagnet. A pressing plate is arranged between the sub-electromagnet and the limiting plate. The pressing plate is made of iron and elastically matches with the sub-electromagnet. A positioning block is integrally formed on the pressing plate. A plurality of positioning holes are arranged on the guide rail and correspond to the aeration head. When the detection unit detects that no bubbles are generated above the aeration head, the detection unit can control the sub-electromagnet to be in a de-energized state, so that the positioning block is popped out and matches with the positioning hole. A sealing block is slidably arranged in the square frame. A lifting column is fixedly arranged on the top surface of the sealing block. A rotating drum is sleeved on the outer side of the lifting column. The rotating drum can drive the lifting column to reciprocate in the vertical direction during rotation. The driving assembly includes a chain arranged above the degradation tank. A sleeve ring is rotatably sleeved on the outer side of the rotating drum. A sprocket engaged with the chain is fixedly sleeved on the outer side of the sleeve ring. A plurality of clamping grooves are uniformly arranged on the inner wall of the sleeve ring. Clamping blocks elastically connected with the clamping grooves are arranged on the wall of the rotating drum. A main electromagnet is arranged at the top end position of the rotating drum. A magnetic plate is arranged below the main electromagnet. When the main electromagnet is in an energized state, the opposite side of the main electromagnet and the magnetic plate has the same magnetic pole. A pressing block is arranged at the end of the clamping block away from the sleeve ring. The side of the pressing block close to the clamping block is a slope. The pressing block and the magnetic plate are fixedly connected through a connecting rod. The aeration holes are arranged at the positions of the two sides of the top of the connecting plate.

2. A bio-decomposition based polypropylene production sewage purification treatment apparatus according to claim 1, characterized by: The outer side of the rotating drum is sleeved with a support ring through a tapered roller bearing.

3. A bio-decomposition based polypropylene production sewage purification treatment apparatus as claimed in claim 1, wherein: A pressing rod is elastically connected with the limiting plate through a tension spring. A slot is arranged on the guide rail and matches with the pressing rod. The end of the pressing rod inserted into the slot is a spherical surface structure.

4. A bio-decomposition based polypropylene production sewage purification treatment apparatus as claimed in claim 1, wherein: Motors are arranged at the two end positions of the degradation tank to drive the chain to rotate.

5. A bio-decomposition based polypropylene production sewage purification treatment apparatus as claimed in claim 1, wherein: An annular limiting groove is arranged on the outer circumferential wall of the lifting column. The limiting groove is inclined. A protrusion slidably matched with the limiting groove is fixedly arranged on the inner wall of the rotating drum.

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