Organic solid waste disposal equipment for sewage treatment plant and process thereof

Abstract

The application discloses a kind of organic solid waste disposal processes of sewage treatment plant, comprising the following steps: S1, domestic sewage produced by domestic sewage plant is carried out sedimentation treatment, and domestic sludge is extracted;S2, the conditioning sludge in step S1 is carried out pressure filtration by filter press;S3, after dewatering mud cake is mixed with sludge conditioner, fermentation flora and deodorant agent, the mixture is placed into fermentation device, and fermentation is carried out using membrane covering high-temperature aerobic fermentation technology;S4, the material after fermentation is transported to post-mature workshop and is carried out secondary composting fermentation by turning over etc..The application utilizes the setting mode that filter press and membrane covering process cooperate, material fermentation process uses membrane covering process, and oxygen content in material is guaranteed by regularly aerating material;The generated foul-smelling gas: part is discharged to atmosphere after being filtered by membrane;Part containing foul-smelling gas is transported to biological filter tank for effective treatment by air pump, and surrounding air quality is not affected.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of organic solid waste disposal equipment, in particular to a sewage treatment plant organic solid waste disposal equipment and process thereof. BACKGROUND

[0002] The traditional high-temperature aerobic fermentation process directly disposes municipal sewage sludge, and the deficiencies are: 1. Long fermentation period: 14-21d; high moisture content of sludge, large volume, large land occupation; 2. High cost: ① The moisture content of sewage sludge is 80%, compared with the sludge with moisture content of 60% after dewatering, the amount of auxiliary material added is more; ② Long fermentation period, high labor and energy costs; unorganized emission of foul gas: the traditional fermentation mode produces foul gas during anaerobic fermentation of materials, and there is no effective collection and disposal method; it affects the surrounding air quality. SUMMARY

[0003] The present application relates to the field of organic solid waste disposal equipment, in particular to a sewage treatment plant organic solid waste disposal equipment and process thereof.

[0004] To achieve the above-mentioned purpose, the present application provides the following technical scheme: a sewage treatment plant organic solid waste disposal process, comprising the following steps:

[0005] S1, the sewage sludge produced by the sewage treatment plant is subjected to sedimentation treatment, and the sewage sludge is extracted, diluted into diluted sludge by a dilution liquid, and then treated into conditioned sludge by adding a sewage treatment agent;

[0006] S2, the conditioned sludge in step S1 is subjected to pressure filtration by a pressure filter, the solid produced by pressure filtration is dewatered mud, and the liquid produced by pressure filtration is pressure filtrate, the pressure filtrate is treated by A2 / O sewage treatment, and then divided into sludge and disposal water, the sludge is added to the diluted sludge in step S1, and the disposal water is recycled as the sludge dilution liquid in step S1;

[0007] S3, after the dewatered mud is mixed with a sludge conditioner, a fermentation bacteria group and a deodorant agent, the mixture is placed into a fermentation device, and a membrane-covered high-temperature aerobic fermentation technology is used for fermentation, oxygen content in the fermentation material is supplemented by timed aeration, and oxygen content and foul gas concentration in the fermentation process are monitored online; the gas produced in the fermentation process is partly discharged to the atmosphere through the permeation of the membrane (foul gas cannot permeate the membrane), and the other part is transported to a biological filter for disposal by the fermentation device;

[0008] S4, the material after fermentation is transported to a post-composting workshop for secondary composting fermentation by turning and throwing, and the undersize material formed after screening of the semi-finished product is used as nutrient soil, and the oversize material is recycled as a sludge conditioner.

[0009] The utility model provides a kind of organic solid waste disposal equipment of sewage treatment plant, the fermentation device includes treatment pool, air device is installed on the inner wall of both sides of the treatment pool, air device is connected with film coating device between, the film coating device is used to film coating treatment to material, one side of the treatment pool is connected with air pump, the air pump is connected with one of air device, control device is installed on the treatment pool.

[0010] Preferably, an opening is formed in the bottom of the other side of the treatment pool, a sealing plate is slidably connected inside the other side of the treatment pool, the sealing plate is used to seal the opening, a handle is connected to the sealing plate, and the handle is slidably connected to the treatment pool.

[0011] Preferably, the air device includes a mounting seat and a sealing mechanism, the mounting seat is fixedly connected to the inner wall of the treatment pool, a through hole is formed in the mounting seat, and the sealing mechanism is installed inside the through hole.

[0012] Preferably, the sealing mechanism includes a fixed ring, a sealing head, a spring, an iron block, and an adsorption assembly, the fixed ring is fixedly installed inside the mounting seat, the sealing head is in threaded connection with the fixed ring, a ventilation groove is formed in the inside of the sealing head, the ventilation groove is in T shape, the spring is sleeved outside the sealing head, a limiting ring is fixedly sleeved on the outer wall of one end of the iron block, the iron block is connected to the end of the sealing head, the adsorption assembly corresponds to the position of the iron block, and the adsorption assembly is installed inside the through hole.

[0013] Preferably, the adsorption assembly includes a fixed disc, an iron core, and a coil, the fixed disc is fixedly installed inside the through hole through a support rod, the iron core is installed on the fixed disc, and the coil is wound outside the iron core.

[0014] Preferably, the film coating device includes a storage cylinder, a film roll, and a connecting mechanism, the storage cylinder is installed on one of the mounting seats, a pay-off roller is rotatably arranged inside the storage cylinder, the film roll is wound outside the pay-off roller, the connecting mechanism is connected to one end of the film roll, and the connecting mechanism is installed on the other mounting seat.

[0015] The connecting mechanism includes a clamping assembly and a positioning assembly, the clamping assembly is connected with the positioning assembly, and the positioning assembly is installed on the mounting seat.

[0016] Preferably, the clamping assembly includes a connecting frame, a bolt rod, and a clamping block, the connecting frame is connected with the positioning assembly, a plurality of bolt rods are threadedly connected with the top of the connecting frame, and the clamping block is rotatably connected to the bottom of the bolt rod.

[0017] Preferably, the positioning assembly comprises a fixed block, an insertion plate, a positioning pin, a press switch and a pressing block, the fixed block is fixedly installed on the other one of the mounting seats, the insertion plate is slidably inserted with the fixed block, the positioning pin is slidably inserted with the fixed block and the insertion plate, the positioning pin is used for positioning the insertion plate, the press switch is installed in the interior of the fixed block, the press switch is installed on the insertion plate, and the pressing block is used for pressing the press switch.

[0018] Preferably, the control device comprises a stepping motor, a rotating arm, a dust cover and a delay switch, the processing tank is provided with a mounting frame, the stepping motor is installed at the bottom of the mounting frame through a support, the output end of the stepping motor is drivingly connected with a main shaft, one end of the rotating arm is connected with the main shaft, the dust cover is installed at the top of the mounting frame, and the delay switch is fixedly installed on the inner wall of the dust cover.

[0019] The technical effects and advantages of the present application are as follows:

[0020] (1) The present application utilizes the setting mode that the filter press and the membrane covering process cooperate with each other, the membrane covering process is adopted in the material fermentation process, the material is aerated at regular time intervals, the oxygen content in the material is ensured, the oxygen content and the concentration of the foul gas in the fermentation process are monitored on line, a part of the generated foul gas is filtered through the membrane and then discharged to the atmosphere, the part containing the foul gas is transported to the biological filter tank for effective treatment, the fermentation process does not discharge the foul gas, and the surrounding air quality is not affected.

[0021] (2) The present application utilizes the setting mode that the rotating arm and the delay switch cooperate with each other, through the operation of the stepping motor, the rotating arm is conveniently driven to rotate, one rotation of the rotating arm is the time length of the regular aeration of the material, when the rotating arm rotates for a certain time length, the delay switch is pressed, so that the delay switch simultaneously energizes the coil and the air pump to work, thereby the coil and the air pump are automatically energized and started for a certain time length, and through the control of the delay switch, the coil and the air pump are energized for a period of time to aerate the material, so as to ensure the oxygen content in the material, and then the coil and the air pump are automatically de-energized.

[0022] (3) The present application utilizes the setting mode that the aeration device and the air pump cooperate with each other, when the coil and the air pump are energized to work, through the principle of electrically generated magnetism, the adsorption assembly attracts the iron block, the blocking head moves towards the adsorption assembly, until the iron block is attached to the adsorption assembly, at this time, the bottom of the inner cavity of the aeration groove is no longer blocked by the solid part of the fixed ring, and can be communicated with the inner cavity of the through hole, so that the blocking heads on the two mounting seats are both in communication with the inner cavity of the through hole, at this time, the blocking heads on the two mounting seats do not block the inner cavity of the through hole, so that the oxygen in the outside air can be sucked to the lower part of the membrane covering device, the material is regularly aerated, and the oxygen content in the material is ensured. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 The process block diagram of the present application.

[0024] Figure 2 The overall structure schematic diagram of the device of the present application.

[0025] Figure 3 The internal front structure schematic diagram of the device of the present application.

[0026] Figure 4 The structure schematic diagram of the film coating device of the present application.

[0027] Figure 5 The internal structure schematic diagram of the ventilation device of the present application.

[0028] Figure 6 The structure schematic diagram of the adsorption assembly of the present application.

[0029] Figure 7 The internal structure schematic diagram of the connecting mechanism of the present application.

[0030] Figure 8 The internal structure schematic diagram of the control device of the present application.

[0031] Figure 9 The overhead structure schematic diagram of the rotating arm of the present application.

[0032] In the figure: 1, treatment pool; 11, plugging plate; 2, ventilation device; 21, mounting seat; 22, plugging mechanism; 221, fixed ring; 222, plugging head; 2221, ventilation groove; 2222, limiting ring; 223, spring; 224, iron block; 225, adsorption assembly; 2251, fixed disc; 2252, iron core; 2253, coil; 3, film coating device; 31, storage cylinder; 32, film roll; 33, connecting mechanism; 331, clamping assembly; 3311, connecting frame; 3312, bolt rod; 3313, clamping block; 332, positioning assembly; 3321, fixed block; 3322, insertion plate; 3323, positioning pin; 3324, press switch; 3325, pressing block; 4, air pump; 5, control device; 51, stepping motor; 52, rotating arm; 53, dust cover; 54, delay switch. DETAILED DESCRIPTION

[0033] 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 skilled in the art without creative work fall within the protection scope of the present application.

[0034] The present application providesFigures 1-9 The sewage treatment plant organic solid waste disposal process shown includes the following steps:

[0035] S1, the domestic sewage produced by the domestic sewage plant is subjected to sedimentation treatment, domestic sludge is extracted, is diluted into diluted sludge by a dilution liquid, and is then treated into conditioned sludge by adding a sewage treatment agent;

[0036] S2, the conditioned sludge in step S1 is subjected to pressure filtration by a pressure filter, the solid produced by pressure filtration is dewatered mud, the liquid produced by pressure filtration is pressure filtrate, the pressure filtrate is subjected to A2 / O sewage treatment, and is then divided into sludge and disposal water, the sludge is added to the diluted sludge in step S1, and the disposal water is recycled as the sludge dilution liquid in step S1;

[0037] S3, after the dewatered mud is mixed with sludge conditioner, fermentation bacteria and deodorant bacteria, the mixture is placed into a fermentation device, high-temperature aerobic fermentation technology with membrane covering is adopted for fermentation, oxygen content in the fermentation material is supplemented by regularly supplying air, oxygen content and the concentration of foul gas in the fermentation process are monitored online; the gas produced in the fermentation process is partly discharged to the atmosphere through the permeation of the membrane (foul gas cannot permeate the membrane), and the other part is transported to a biological filter for disposal by the fermentation device;

[0038] S4, the material after fermentation is transported to a post-composting workshop for secondary composting fermentation by turning and throwing, and the undersize material formed after screening of the semi-finished product is used as nutrient soil, and the oversize material is recycled as sludge conditioner.

[0039] By pressure filtration and membrane covering process, the long fermentation period and disposal cost are reduced, the domestic sludge is subjected to deep dewatering, the water content of the sludge is reduced from 80% to 60% or below after deep dewatering, the fermentation amount of the sludge, the amount of auxiliary materials added and the material fermentation area are all reduced to 1 / 2 of the original water content of the sludge; the membrane covering process is adopted in the material fermentation process, the fermentation period is 7-10 days, the fermentation time is reduced to 1 / 3-1 / 2 of the original process, the disposal cost in the fermentation process is reduced, and the labor and energy consumption are reduced; the recycling of wastewater and solid waste resources: the wastewater produced in the sludge dewatering is recycled as sludge dilution liquid after A2 / O wastewater treatment, and the sludge produced in the wastewater disposal process is subjected to fermentation disposal after dewatering; in this process, no wastewater and solid waste is discharged, fermentation bacteria and deodorant bacteria are added, aerobic fermentation of the organic material is strengthened, and the generation of foul gas is reduced; the membrane covering process is adopted in the material fermentation process, air is supplied to the material at regular time to ensure the oxygen content in the material; the oxygen content and the concentration of foul gas in the fermentation process are monitored online; the generated foul gas: part of it is discharged to the atmosphere after being filtered by the membrane; the part containing foul gas is transported to a biological filter for effective treatment by a gas pump, no foul gas is discharged in the fermentation process, and the surrounding air quality is not affected.

[0040] The utility model provides a kind of sewage treatment plant organic solid waste disposal equipment, fermentation device includes treatment pool 1, both sides inner wall of treatment pool 1 are equipped with aeration device 2, aeration device 2 is connected with film coating device 3 between, film coating device 3 is used to carry out film coating treatment to material, one side of treatment pool 1 is connected with suction pump 4, the gas inlet of suction pump 4 is connected with one of aeration device 2, the gas outlet of suction pump 4 is communicated with biological filter tank, control device 5 is installed on treatment pool 1, when coil 2253 and suction pump 4 are powered on, by the principle of electromagnetism, so that adsorption assembly 225 attracts iron block 224, so that stopper 222 moves towards the direction of adsorption assembly 225, until iron block 224 is attached with adsorption assembly 225, the bottom of the inner cavity of aeration groove 2221 is no longer blocked by fixed ring 221 entity part, can be communicated with the inner cavity of through hole, so that the stopper 222 on the two mounting seats 21 is in communication with the inner cavity of through hole, the stopper 222 on the two mounting seats 21 is not blocked to the inner cavity of through hole at this time, so that oxygen outside can be pumped to the lower of film coating device 3, realize that aeration is in material in time, guarantee oxygen content in material.

[0041] Further, the bottom of the other side of treatment pool 1 is provided with an opening, the inside of the side of treatment pool 1 is slidably connected with sealing plate 11, sealing plate 11 is used for sealing the opening, handle is connected on sealing plate 11, handle is slidably connected with treatment pool 1, handle is used for controlling sealing plate 11, material is discharged through the opening.

[0042] Further, aeration device 2 includes mounting seat 21 and sealing mechanism 22, mounting seat 21 is fixedly connected to the inner wall of treatment pool 1, mounting seat 21 is provided with through hole, sealing mechanism 22 is installed in the inside of through hole, sealing mechanism 22 is used for the sealing of through hole, when the through hole is unsealed by the sealing mechanism 22 on both sides, through the operation of suction pump 4, the space below film coating device 3 can be pumped negative pressure through through hole, so that the part containing foul gas is pumped away through one sealing mechanism 22, oxygen is entered through another sealing mechanism 22, so that the gas generated by material can be discharged, and oxygen is replaced, so as to ferment material.

[0043] Further, the plugging mechanism 22 comprises a fixing ring 221, a plugging head 222, a spring 223, an iron block 224 and an adsorption assembly 225, the fixing ring 221 is fixedly installed in the inner portion of the mounting seat 21, the plugging head 222 is penetratingly arranged with the fixing ring 221, the inner portion of the plugging head 222 is provided with a ventilation groove 2221, the ventilation groove 2221 is in T shape, the spring 223 is sleeved on the outer portion of the plugging head 222, the outer wall of one end of the iron block 224 is fixedly sleeved with a limiting ring 2222, the iron block 224 is connected to the end portion of the plugging head 222, the adsorption assembly 225 corresponds to the position of the iron block 224, the adsorption assembly 225 is installed in the inner portion of the through hole, through the compression deformation of the spring 223, the elastic support of the plugging head 222 is facilitated, so that the limiting ring 2222 is tightly attached to the fixing ring 221, at this time, the bottom of the ventilation groove 2221 corresponds to the inner wall of the fixing ring 221, the bottom of the inner cavity of the ventilation groove 2221 is blocked by the fixing ring 221, so as to realize the blocking of the inner cavity of the through hole, and prevent the odor gas generated by the material from running out.

[0044] Further, the adsorption assembly 225 comprises a fixed disc 2251, an iron core 2252 and a coil 2253, the fixed disc 2251 is fixedly installed in the inner portion of the through hole through a support rod, the iron core 2252 is installed on the fixed disc 2251, and the coil 2253 is wound on the outer portion of the iron core 2252, through the fixed disc 2251, the installation of the fixed disc 2251 is facilitated, through the principle of generating magnetism by electricity, when the coil 2253 is electrified, the iron core 2252 will generate magnetic force, so as to adsorb the iron block 224, thereby driving the plugging head 222 to perform penetrating movement and release the blocking of the inner cavity of the through hole.

[0045] Further, the film covering device 3 comprises a storage cylinder 31, a film roll 32 and a connecting mechanism 33, the storage cylinder 31 is installed on one of the mounting seats 21, a pay-off roller is rotationally arranged in the inner portion of the storage cylinder 31, the film roll 32 is wound on the outer portion of the pay-off roller, the connecting mechanism 33 is connected to one end of the film roll 32, and the connecting mechanism 33 is installed on the other mounting seat 21, through the storage cylinder 31, the film roll 32 is protected, through the pay-off roller, the film roll 32 is paid off, so that the film roll 32 can be pulled out of the inner cavity of the storage cylinder 31 and cover the material, and through the connecting mechanism 33, the end portion of the film roll 32 is positioned.

[0046] The connecting mechanism 33 comprises a clamping assembly 331 and a positioning assembly 332, the clamping assembly 331 is connected with the positioning assembly 332, and the positioning assembly 332 is installed on the mounting seat 21.

[0047] Further, the clamping assembly 331 comprises a connecting frame 3311, bolt rods 3312 and clamping blocks 3313, the connecting frame 3311 is connected with the positioning assembly 332, the bolt rods 3312 are threadedly connected with the top of the connecting frame 3311, and the clamping blocks 3313 are rotationally connected to the bottom of the bolt rods 3312. The bolt rods 3312 facilitate the movement of the clamping blocks 3313, so that the clamping blocks 3313 can be pressed against the end of the film roll 32 to position the end of the film roll 32.

[0048] Further, the positioning assembly 332 comprises a fixed block 3321, an insertion plate 3322, a positioning pin 3323, a press switch 3324 and a pressing block 3325. The fixed block 3321 is fixedly installed on the other one of the mounting seats 21. The insertion plate 3322 is slidably connected with the fixed block 3321. The positioning pin 3323 is slidably connected with the fixed block 3321 and the insertion plate 3322, and is used for positioning the insertion plate 3322. The press switch 3324 is installed in the fixed block 3321. The press switch 3324 is installed on the insertion plate 3322. The pressing block 3325 is used for pressing the press switch 3324. By locking the insertion plate 3322 in the fixed block 3321, the position of the clamping assembly 331 is fixed, and the pressing block 3325 presses the press switch 3324, so that the energization of the stepping motor 51 is ensured.

[0049] Further, the control device 5 comprises a stepping motor 51, a rotating arm 52, a dust cover 53 and a delay switch 54. The processing tank 1 is provided with a mounting frame. The stepping motor 51 is installed at the bottom of the mounting frame through a support. The output end of the stepping motor 51 is drivingly connected with a main shaft. One end of the rotating arm 52 is connected with the main shaft. The dust cover 53 is installed at the top of the mounting frame. The delay switch 54 is fixedly installed on the inner wall of the dust cover 53. The rotating arm 52 is rotated by the operation of the stepping motor 51. When the rotating arm 52 rotates for a certain time, the delay switch 54 is pressed, so that the delay switch 54 simultaneously energizes the coil 2253 and the air suction pump 4, thereby automatically energizing the coil 2253 and the air suction pump 4 for a certain time. The coil 2253 and the air suction pump 4 are energized for a certain time, air is supplied to the material, and the oxygen content in the material is ensured.

[0050] Finally, it should be noted that the above is only the preferred embodiment of the present application, and is not intended to limit the present application, although the foregoing embodiments of the present application are described in detail, for those skilled in the art, it still can be modified to the technical solution recorded in the foregoing embodiments, or equivalent replacement of some technical features, any modification, equivalent replacement, improvement, etc. within the spirit and principles of the present application, should be included in the protection scope of the present application.

Claims

1. A process for disposal of organic solid waste from a sewage treatment plant, characterized in that, The method comprises the following steps: S1, the domestic sewage produced by the domestic sewage plant is subjected to sedimentation treatment, domestic sludge is extracted, the dilute sludge is diluted by a dilute liquid, and then the conditioning sludge is obtained by adding a sewage treatment agent; S2, the conditioning sludge in step S1 is subjected to pressure filtration by a pressure filter, the solid produced by pressure filtration is a dewatered mud block, the liquid produced by pressure filtration is a pressure filtrate, the pressure filtrate is subjected to A2 / O sewage treatment, and then the sludge and the disposal water are obtained, the sludge is added to the dilute sludge in step S1, and the disposal water is recycled as the sludge dilute liquid in step S1; S3, after the dewatered mud block is mixed with a sludge conditioner, a fermentation bacterial group and a deodorization bacterial agent, the mixture is placed into a fermentation device, the mixture is subjected to fermentation by using a membrane covering high-temperature aerobic fermentation technology, the oxygen content in the fermentation material is supplemented by regularly supplying air, the oxygen content and the concentration of foul gas in the fermentation process are monitored online, a part of the gas produced in the fermentation process is discharged to the atmosphere by the penetration of the membrane, and the other part of the gas is transported to a biological filter tank for disposal; S4, the material after fermentation is transported to a post-rotting workshop for secondary rotting fermentation by turning and throwing, the undersize material formed after screening of the semi-finished product is used as nutrient soil, and the oversize material is recycled as a sludge conditioner; The fermentation device comprises a treatment tank (1), air supply devices (2) are installed on the inner walls of the two sides of the treatment tank (1), a film covering device (3) is connected between the air supply devices (2), the film covering device (3) is used for covering the material, a gas suction pump (4) is connected to one side of the treatment tank (1), the gas suction pump (4) is connected to one of the air supply devices (2), and a control device (5) is installed on the treatment tank (1); The air supply device (2) comprises a mounting seat (21) and a plugging mechanism (22), the mounting seat (21) is fixedly connected to the inner wall of the treatment tank (1), a through hole is formed in the mounting seat (21), and the plugging mechanism (22) is installed in the through hole; The plugging mechanism (22) comprises a fixed ring (221), a plugging head (222), a spring (223), an iron block (224) and an adsorption assembly (225), the fixed ring (221) is fixedly installed in the mounting seat (21), the plugging head (222) is arranged in the fixed ring (221) in a penetrating mode, a ventilation groove (2221) is formed in the plugging head (222) in a T-shaped mode, the spring (223) is sleeved outside the plugging head (222), a limiting ring (2222) is fixedly sleeved on the outer wall of one end of the iron block (224), the iron block (224) is connected to the end of the plugging head (222), the adsorption assembly (225) corresponds to the position of the iron block (224), and the adsorption assembly (225) is installed in the through hole. The adsorption assembly (225) comprises a fixed disc (2251), an iron core (2252) and a coil (2253), the fixed disc (2251) is fixedly installed in the inside of the through hole through a support rod, the iron core (2252) is installed on the fixed disc (2251), and the coil (2253) is wound on the outside of the iron core (2252). The control device (5) comprises a stepping motor (51), a rotating arm (52), a dust cover (53) and a delay switch (54), the processing tank (1) is provided with a mounting frame, the stepping motor (51) is installed at the bottom of the mounting frame through a support, the output end of the stepping motor (51) is in transmission connection with a main shaft, one end of the rotating arm (52) is connected with the main shaft, the dust cover (53) is installed at the top of the mounting frame, and the delay switch (54) is fixedly installed on the inner wall of the dust cover (53).

2. A process for disposal of organic solid waste in a sewage treatment plant as claimed in claim 1 wherein, An opening is formed in the bottom of the other side of the processing tank (1), a sealing plate (11) is slidably connected in the inside of the side of the processing tank (1), the sealing plate (11) is used for sealing the opening, a handle is connected to the sealing plate (11), and the handle is slidably connected with the processing tank (1).

3. A process for disposal of organic solid waste in a sewage treatment plant as claimed in claim 1 wherein, The film covering device (3) comprises a storage cylinder (31), a film roll (32) and a connecting mechanism (33), the storage cylinder (31) is installed on one of the mounting seats (21), a pay-off roller is rotatably arranged in the inside of the storage cylinder (31), the film roll (32) is wound on the outside of the pay-off roller, the connecting mechanism (33) is connected to one end of the film roll (32), and the connecting mechanism (33) is installed on the other mounting seat (21). The connecting mechanism (33) comprises a clamping assembly (331) and a positioning assembly (332), the clamping assembly (331) is connected with the positioning assembly (332), and the positioning assembly (332) is installed on the mounting seat (21).

4. A process for disposal of organic solid waste in a sewage treatment plant as claimed in claim 3 wherein, The clamping assembly (331) comprises a connecting frame (3311), a bolt rod (3312) and a clamping block (3313), the connecting frame (3311) is connected with the positioning assembly (332), a plurality of bolt rods (3312) are in threaded penetration connection with the top of the connecting frame (3311), and the clamping block (3313) is rotatably connected to the bottom of the bolt rod (3312).

5. A process for disposal of organic solid waste in a sewage treatment plant as claimed in claim 4 wherein, The positioning assembly (332) comprises a fixing block (3321), an insertion plate (3322), a positioning pin (3323), a press switch (3324) and a pressing block (3325), the fixing block (3321) is fixedly installed on the other mounting seat (21), the insertion plate (3322) is slidably connected with the fixing block (3321), the positioning pin (3323) is slidably connected with the fixing block (3321) and the insertion plate (3322), the positioning pin (3323) is used for positioning the insertion plate (3322), the press switch (3324) is installed in the fixing block (3321), the press switch (3324) is installed on the insertion plate (3322), and the pressing block (3325) is used for pressing the press switch (3324).

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