CN116282789B - High-efficient oxygen suppliment aerobic fermentation device is used in sludge treatment - Google Patents

High-efficient oxygen suppliment aerobic fermentation device is used in sludge treatment Download PDF

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Publication number
CN116282789B
CN116282789B CN202310111875.8A CN202310111875A CN116282789B CN 116282789 B CN116282789 B CN 116282789B CN 202310111875 A CN202310111875 A CN 202310111875A CN 116282789 B CN116282789 B CN 116282789B
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tank body
sludge
main shaft
aerobic fermentation
plate
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CN116282789A (en
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陈伯强
吕波
王晓
刘昊明
马春明
宗明远
別聪聪
王洁
王杰阳
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Qingdao Huijun Environmental Energy Engineering Co ltd
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Qingdao Huijun Environmental Energy Engineering Co ltd
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    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F11/00Treatment of sludge; Devices therefor
    • C02F11/02Biological treatment
    • CCHEMISTRY; METALLURGY
    • C05FERTILISERS; MANUFACTURE THEREOF
    • C05FORGANIC FERTILISERS NOT COVERED BY SUBCLASSES C05B, C05C, e.g. FERTILISERS FROM WASTE OR REFUSE
    • C05F17/00Preparation of fertilisers characterised by biological or biochemical treatment steps, e.g. composting or fermentation
    • C05F17/90Apparatus therefor
    • CCHEMISTRY; METALLURGY
    • C05FERTILISERS; MANUFACTURE THEREOF
    • C05FORGANIC FERTILISERS NOT COVERED BY SUBCLASSES C05B, C05C, e.g. FERTILISERS FROM WASTE OR REFUSE
    • C05F7/00Fertilisers from waste water, sewage sludge, sea slime, ooze or similar masses
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2101/00Nature of the contaminant
    • C02F2101/30Organic compounds
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2209/00Controlling or monitoring parameters in water treatment
    • C02F2209/02Temperature
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2209/00Controlling or monitoring parameters in water treatment
    • C02F2209/03Pressure

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  • Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Organic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Molecular Biology (AREA)
  • Environmental & Geological Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • Water Supply & Treatment (AREA)
  • Hydrology & Water Resources (AREA)
  • Biochemistry (AREA)
  • Biotechnology (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Microbiology (AREA)
  • Treatment Of Sludge (AREA)

Abstract

The application relates to the technical field of sludge treatment, in particular to an aerobic fermentation device with high-efficiency oxygen supply for sludge treatment, which comprises a tank body, a main motor, a main shaft, layered blades, a lower hopper, an air injection component, a shielding plate and a discharging plate, wherein the side wall of the outer surface of the tank body is fixed on a foundation, the main motor is arranged at the top of the tank body, the main motor is provided with a vertical main shaft towards the inside of the tank body, the main shaft is provided with a plurality of layered blades which are axially distributed, the lower hopper is arranged above the tank body, the lower hopper breaks sludge into particles and inputs the particles into the upper layer of the tank body, the air injection component is arranged at the lower part of the tank body, the air injection component injects air into the tank body, the tank body comprises a chassis at the bottom, and the chassis is provided with a bottom hole. The main shaft is worn out the chassis, and the shielding plate is fixed in the lower part of main shaft, and the shielding plate is higher than the chassis, and the discharging plate is fixed in the main shaft bottom, and discharging plate upper surface and chassis lower surface are hugged closely, are equipped with the material hole on the discharging plate, on the projection of horizontal plane, material hole and bottom hole have overlapping and the material hole is covered by the shielding plate.

Description

High-efficient oxygen suppliment aerobic fermentation device is used in sludge treatment
Technical Field
The application relates to the technical field of sludge treatment, in particular to an efficient oxygen supply aerobic fermentation device for sludge treatment.
Background
The sludge is used as fertilizer for recycling after aerobic fermentation, which is a good process for comprehensive treatment of sludge. The thermophilic bacteria are utilized to decompose organic matters in the sludge to form humus, the content of fertilizer effective matters is high, and the fertilizer is used as a destination of the sludge, so that means and places such as landfill and the like are not needed to be searched for the sludge.
The aerobic fermentation process of sludge needs to maintain the oxygen concentration, the temperature of a material layer can be maintained at about 50 ℃, the temperature is low, the thermophilic bacteria have poor activity and cannot kill pathogens, parasitic ova and the like, and the existence of thermophilic bacteria can be endangered due to the fact that the temperature is too high, so that the sludge pile needs to be continuously turned over due to uniform heat distribution and air flow at local positions, the sludge needs to be paved on a larger field, the land utilization rate is not high, the bottleneck of restricting the popularization of the technology at present is that in the process of treating efficiency and continuously manually turning over the sludge to maintain the oxygen concentration, and the industrialization is further required to reduce the participation of manpower and improve the treating capacity of unit occupied land and time.
Disclosure of Invention
The application aims to provide an aerobic fermentation device with high-efficiency oxygen supply for sludge treatment, so as to solve the problems in the background technology.
In order to solve the technical problems, the application provides the following technical scheme:
the utility model provides an aerobic fermentation device of high-efficient oxygen suppliment is used in sludge treatment, aerobic fermentation device includes the jar body, the main motor, the main shaft, layering blade, lower hopper, the gas injection subassembly, jar external surface lateral wall is fixed on the basis, jar body top sets up the main motor, the main motor sets up vertical main shaft to jar internal portion, set up a plurality of layering blade of axial distribution on the main shaft, lower hopper setting is in the oblique top of jar body, lower hopper is broken to granular input jar body upper strata with mud, the gas injection subassembly sets up the lower part at the jar body, the gas injection subassembly is to the internal air injection of jar, the jar body includes the chassis of bottom, have the bottom opening on the chassis.
The method comprises the steps that initial sludge added with thermophilic bacteria is put into a discharging hopper and crushed into uniform particles to be put into a tank body, sludge to be fermented, which is put into the tank body according to sequence, is stored in the tank body, the upper layer is sludge which is just subjected to fermentation, the lower layer is sludge which is close to the fermentation, the sludge after fermentation treatment is discharged from a bottom hole, the occupied area of the stacked sludge is reduced, the sludge which is continuously fed and discharged does not need to be subjected to frequent actions of full emptying such as tank body dumping, and the like, the sludge after treatment is received by a material vehicle below the bottom hole and used as a primary fermentation process, and the sludge after treatment is subjected to secondary fermentation without turning and standing. The sludge is supported in the tank body by the plurality of layered blades, so that all sludge dead weight is not enabled to be on the lowest sludge, the oxygen arrival is affected by the excessively dense state, the blades do not occupy all round areas on the layered blades of a single layer, after the space below is vacant for one layer, the upper sludge can fall down for one layer after the layered blades rotate for one circle, projections of all the layered blades on the horizontal plane are evenly staggered and partially overlapped, and the oxygen of the fermentation environment is kept sufficient by injecting air into the air injection assembly.
The aerobic fermentation device also comprises a stirring plate, the stirring plate is arranged on the upper part of the main shaft, and the plate surface of the stirring plate is vertical and extends along the radial direction of the main shaft.
The sludge falling from the blanking hopper is piled at one position in the tank body, and a larger drop is needed when the sludge slides to the side position by itself, so that the reduction of the vertical dimension of the tank body is not facilitated, and the feeding plate is specially arranged, so that the incoming sludge can be pushed to be flat along with the process of each rotation of the main shaft.
The aerobic fermentation device further comprises a shielding plate and a discharging disc, the main shaft penetrates out of the chassis, the shielding plate is fixed at the lower part of the main shaft and higher than the chassis, the discharging disc is fixed at the bottom end of the main shaft, the upper surface of the discharging disc is tightly attached to the lower surface of the chassis, a material hole is formed in the discharging disc, the material hole and the bottom hole are overlapped on the projection of a horizontal plane, and the material hole is fully covered by the shielding plate.
The shielding plate and the discharging disc rotate along with the main shaft, and only a thin layer of sludge particles between the shielding plate and the material hole penetrate through the bottom hole and the material hole to be discharged out of the tank body, and the shielding plate prevents the sludge in the vertical direction of the material hole from falling and flowing out too quickly.
The aerobic fermentation device also comprises an electrode and an air pump, wherein the electrode is arranged in the discharging hopper, the electrode is inserted into sludge to be sent to the tank body in the discharging hopper, the electrode detects the conductivity of the sludge, the air pump opening is connected with the top of the tank body, and the air pump is connected with an electrode electric signal.
The air pump adjusts the air pressure at the top in the tank body, especially after a layer of sludge is newly placed in the tank body, after the pressure is changed by air extraction, before the air in the lower part is upwards replenished, the moisture in the new sludge layer can be evaporated to replenish the air pressure, the structure is used for adjusting the moisture content of the sludge after the sludge enters the tank body, the liquid water occupies a particle gap when the moisture content of the sludge is too high, the contact between oxygen and thermophiles on the sludge particles is influenced, the aerobic fermentation effect is influenced, the fermentation environment is poor when the moisture content is too low, the activity of the thermophiles is reduced, and the like.
The aerobic fermentation device also comprises a pressure sensor which is arranged at the top of the tank body and detects the pressure at the top of the tank body, and the pressure sensor is connected with an air pump through an electric signal.
The extraction amount obtained by the pre-estimation calculation is the corresponding standard pressure extraction process, if the resistance of the ascending air flow channel in the tank body is larger, the top in the tank body is maintained to be lower than the atmospheric pressure, the ratio of the partial pressure of water vapor in the gas component is improved to a certain extent, the extraction amount is reduced by a small amount, otherwise, the water content is possibly reduced too much, the pressure at the top of the tank body is obtained through the pressure sensor, and the pressure is used as the basis for adaptively adjusting the extraction amount.
The gas injection assembly comprises a gas distribution ring, the gas distribution ring surrounds the main shaft, and a plurality of gas outlet holes are formed in the gas distribution ring downwards. The air outlet holes face downwards to prevent sludge particles from drilling into the air distributing ring.
The aerobic fermentation device further comprises a reinforcing rod, and the reinforcing rod is vertically connected with the plurality of layered blades. The reinforcing rods strengthen the outer edges of the layered blades and prevent the edges from warping. The layered blades are in the form of axial flow fan blades, and can play a role in loosening sludge to a certain extent in the pushing direction of the sludge in the rotating process.
The reinforcing rod 25 is internally provided with a vertical core hole 251, 1/4-1/3 of the height of ethanol is filled in the core hole 251, and the residual space of the core hole 251 is vacuumized to 20-30 kPa. The boiling point of the ethanol is about 50 ℃ under the pressure of 30kPa, the bottom of the reinforcing rod is in contact with fully fermented sludge, the heat of the sludge is high, the heat transfer coefficient of the sludge is lower and the gap is large, so that the temperature distribution is improved by continuously turning sludge clusters, the ethanol at the bottom can be evaporated into a gas state after being transferred to the reinforcing rod, the ethanol rises and falls back to the bottom of the reinforcing rod after being contacted with a colder wall surface above, a large amount of heat is absorbed in the evaporation process, liquefaction releases heat, the heat can be quickly transferred at the height of the tank body, the high temperature of the bottom is limited, the heat is transferred to the upper part to promote the fermentation efficiency of the upper sludge, the ideal fermentation temperature is 40-55 ℃, the heat of the previous period is naturally cooled and wasted in the traditional batch fermentation process, and the next period needs to perform long-time pre-fermentation of fermentation strains to raise the temperature to a proper temperature to kill pathogens, parasitic eggs and the like.
Compared with the prior art, the application has the following beneficial effects: according to the application, an aerobic fermentation place of sludge is provided through the tank body, the sludge is piled up in the tank body, the sludge is not dense due to the existence of layering blades, new sludge is continuously added to the upper layer, the fermented sludge is continuously discharged from the bottom of the tank body, the gas injection component continuously injects gas to the bottom of the tank body to keep oxygen concentration, the occupied area is reduced, the utilization rate of the treatment place is improved, the heat of the sludge basically finished by fermentation of the lower layer is timely transferred to the upper layer to improve the activity of thermophilic bacteria of the upper layer, the layering blades and the reinforcing rods only scratch out the sludge when rotating, the sludge is not driven to rotate, the water content of the sludge entering the tank body is detected through the electrode in the lower hopper, and the gas extraction force of the suction pump at the top of the tank body is timely adjusted, so that the water content of the sludge is reduced to a proper degree.
Drawings
The accompanying drawings are included to provide a further understanding of the application and are incorporated in and constitute a part of this specification, illustrate the application and together with the embodiments of the application, serve to explain the application. In the drawings:
FIG. 1 is a schematic view of the overall structure of the present application;
FIG. 2 is a schematic diagram of sludge stratification within the tank of the present application;
fig. 3 is view a of fig. 2;
FIG. 4 is a perspective view showing the arrangement of the bottom chassis, the shielding plate and the reinforcing rods of the tank body;
FIG. 5 is a schematic diagram of the expected raw temperature distribution of layered sludge before the reinforcement bars are not arranged and the expected temperature distribution after the reinforcement bar core hole structure is added;
fig. 6 is view B in fig. 5;
in the figure: 1. a tank body; 11. a chassis; 12. a bottom hole; 21. a main motor; 22. a main shaft; 23. a kick-out plate; 24. layering blades; 25. a reinforcing rod; 251. a core hole; 26. a shielding plate; 27. a discharge tray; 271. a material hole; 3. discharging a hopper; 4. an air injection assembly; 41. a gas distributing ring; 42. an air outlet hole; 51. an electrode; 52. a pressure sensor; 53. an air extracting pump; 8. and (5) a skip car.
Detailed Description
The following description of the embodiments of the present application will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present application, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.
The utility model provides an aerobic fermentation device of high-efficient oxygen suppliment is used in sludge treatment, aerobic fermentation device includes jar body 1, main motor 21, main shaft 22, layering blade 24, lower hopper 3, gas injection subassembly 4, jar body 1 outward appearance lateral wall is fixed on the basis, jar body 1 top sets up main motor 21, main motor 21 sets up vertical main shaft 22 to jar body 1 inside, set up a plurality of layering blade 24 of axial distribution on the main shaft 22, lower hopper 3 sets up in jar body 1 oblique top, lower hopper 3 drops into jar body 1 upper strata with the granule with mud broken, gas injection subassembly 4 sets up in jar body 1's lower part, gas injection subassembly 4 is to jar body 1 in the injection air, jar body 1 includes the chassis 11 of bottom, chassis 11 is last to have bottom hole 12.
As shown in fig. 1 to 3, initial sludge added with thermophilic bacteria is put into a discharging hopper 3, crushed into uniform particles and put into a tank body 1, sludge to be fermented which is put into the tank body 1 in sequence is stored in the tank body 1, the upper layer is sludge which is just fermented, the lower layer is sludge which is near to the fermentation, the sludge after fermentation treatment is discharged from a bottom hole 12, the stacked sludge occupies less space, the sludge which is continuously fed and discharged does not need frequent actions such as dumping and the like of the tank body 1, the treated sludge is received by a skip car 8 below the bottom hole 12, and the device is used as a primary fermentation process, and the treated sludge can be treated by secondary fermentation without turning and standing. The sludge is supported by the plurality of layered blades 24 in the tank body 1, so that all the sludge is not pressed on the lowest sludge by dead weight, the oxygen arrival is influenced in an excessively compact state, the blades do not occupy all round areas on the layered blades 24 of a single layer, only 60% -80% of the blades occupy, after the space below is free for one layer, the upper sludge can fall down for one layer after the layered blades 24 rotate for one circle, projections of all the layered blades 24 on the horizontal plane are uniformly staggered and partially overlapped, and the air injection assembly 4 injects air to keep sufficient oxygen in the fermentation environment.
The aerobic fermentation device further comprises a stirring plate 23, wherein the stirring plate 23 is arranged on the upper part of the main shaft 22, and the plate surface of the stirring plate 23 is vertical and extends along the radial direction of the main shaft 22.
As shown in fig. 1, the sludge falling from the discharging hopper 3 is piled at a position in the tank body 1, and a larger drop is required by the sludge sliding to a side position, which is not beneficial to the simplification of the vertical dimension of the tank body 1, and a stirring plate 23 is specially arranged, so that the incoming sludge can be pushed flat along with the process of each rotation of the main shaft 22.
The aerobic fermentation device further comprises a shielding plate 26 and a discharging plate 27, the main shaft 22 penetrates out of the chassis 11, the shielding plate 26 is fixed at the lower part of the main shaft 22, the shielding plate 26 is higher than the chassis 11, the discharging plate 27 is fixed at the bottom end of the main shaft 22, the upper surface of the discharging plate 27 is tightly attached to the lower surface of the chassis 11, a material hole 271 is formed in the discharging plate 27, the material hole 271 and the bottom hole 12 are overlapped on the projection of a horizontal plane, and the material hole 271 is further fully covered by the shielding plate 26.
As shown in fig. 2 to 4, the shielding plate 26 and the discharging plate 27 rotate together with the main shaft 22, and only a thin layer of sludge particles between the shielding plate 26 and the material hole 271 pass through the bottom hole 12 and the material hole 271 to be discharged out of the tank 1, and the shielding plate 26 prevents the sludge in the vertical direction of the material hole 271 from falling and flowing out too quickly.
The aerobic fermentation device further comprises an electrode 51 and an air pump 53, wherein the electrode 51 is arranged in the discharging hopper 3, the electrode 51 is inserted into sludge to be sent to the tank body 1 in the discharging hopper 3, the electrode 51 detects the conductivity of the sludge, an air pumping hole of the air pump 53 is connected with the top of the tank body 1, and the air pump 53 is electrically connected with the electrode 51.
As shown in FIG. 1, the air pump 53 adjusts the air pressure at the top of the tank 1, especially after a layer of sludge is newly placed in the tank 1, after the pressure is changed by air extraction, before the air in the lower part is upwardly replenished, the moisture in the new sludge layer is evaporated to replenish the air pressure, the structure is used for adjusting the moisture content of the sludge entering the tank 1, the moisture content of the sludge is too high, liquid water occupies the gaps among particles, the contact of oxygen and thermophilic bacteria on the sludge particles is affected, the aerobic fermentation effect is affected, the fermentation environment is poor, the activity of the thermophilic bacteria is reduced, and the like, the research shows that the moisture content of 40-50% is a proper amount, therefore, the water content of the conductivity reaction is detected by the electrode 51 at the discharging hopper 3, the air pumped from the top of the tank 1 in the discharging period can be approximately judged to be proper, for example, 1kg of sludge entering the tank 1 in the feeding period of 1 minute, when the conductivity is measured to be about 70% of water content, the water to be removed is 0.2kg,0.2kg of water becomes about 247L in standard condition, the water saturation vapor pressure is 2.3kPa at 20 ℃, namely, as long as the partial pressure of water vapor in the upper partial space is lower than the value, water is evaporated continuously, the air pressure in the tank 1 is considered to be 2.3kPa to fill the top of the tank 1 with water vapor completely, therefore 249L of gaseous water is required to be carried away by 12500L of air under normal pressure, the standard pressure air amount sucked by the air sucking pump 53 in the period of 1 minute is 12.5m3, the sucking action of the air sucking pump 53 is controlled, the small ventilator can meet the sucking requirement, the calculated process is used as a theoretical value, the actually adopted sucking amount is different due to some unpredictable factors, if the water content is required to be adjusted more accurately, the calibration measures of the test running process after the arrangement of the device are preferably adopted, and the required suction amounts after the sludge with different water contents in the discharging hopper 3 are respectively determined in practice and written into the control logic of the air pump 53 in a corresponding relation.
The aerobic fermentation device also comprises a pressure sensor 52, wherein the pressure sensor 52 is arranged at the top of the tank body 1 and detects the air pressure at the top of the tank body 1, and the pressure sensor 52 is electrically connected with an air pump 53.
The extraction amount obtained by the above-mentioned pre-estimation calculation is the corresponding standard pressure extraction process, if the resistance of the ascending air flow channel in the tank body 1 is large, the top in the tank body 1 is maintained under the condition of lower than the atmospheric pressure to perform the extraction process, the ratio of the partial pressure of the water vapor in the gas component is increased to a certain extent, the extraction amount is reduced correspondingly slightly, otherwise, the water content may be reduced too much, and the pressure at the top of the tank body 1 is obtained through the pressure sensor 52 and is used as the basis for adaptively adjusting the extraction amount.
The gas injection assembly 4 comprises a gas distributing ring 41, the gas distributing ring 41 surrounds the main shaft 22, and a plurality of gas outlet holes 42 are formed in the gas distributing ring 41 downwards. The air outlet holes 42 face downwards to prevent sludge particles from being drilled into the air distributing ring 41.
As shown in fig. 1, 5 and 6, the aerobic fermentation apparatus further comprises a reinforcing bar 25, and the reinforcing bar 25 is vertically connected with a plurality of layered blades 24. The reinforcing rods 25 strengthen the outer edges of the layered blades 24, preventing edge warpage. The layered blades 24 are in the form of axial flow fan blades, and can play a role in loosening sludge to a certain extent in the pushing direction of the sludge in the rotating process.
The reinforcing rod 25 is internally provided with a vertical core hole 251, 1/4-1/3 of the height of ethanol is filled in the core hole 251, and the residual space of the core hole 251 is vacuumized to 20-30 kPa. The boiling point of the ethanol is about 50 ℃ under the pressure of 30kPa, the bottom of the reinforcing rod 25 is in contact with fully fermented sludge, the heat of the sludge is high, the heat transfer coefficient of the sludge is lower and the gap is large, so that the temperature distribution is improved conventionally by continuously turning over sludge clusters, the ethanol at the bottom can be evaporated into a gaseous state after being transferred to the reinforcing rod 25, the ethanol rises and falls back into a liquid state to the bottom of the reinforcing rod 25 after being contacted with a colder wall surface at the upper part, a large amount of heat is absorbed in the evaporation process, liquefaction heat is released, the rapid transfer of the heat at the inner height of the tank body 1 can be realized, the high temperature of the bottom is limited, the heat is transferred to the upper part to promote the fermentation efficiency of upper sludge, the ideal fermentation temperature is 40-55 ℃ in the traditional batch fermentation process, the heat of the previous period is naturally cooled and wasted, and the next period needs a long-time pre-fermentation strain to be fermented to the temperature to be raised to a proper temperature so as to kill pathogens, parasitic eggs and the like.
It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Finally, it should be noted that: the foregoing description is only a preferred embodiment of the present application, and the present application is not limited thereto, but it is to be understood that modifications and equivalents of some of the technical features described in the foregoing embodiments may be made by those skilled in the art, although the present application has been described in detail with reference to the foregoing embodiments. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the protection scope of the present application.

Claims (3)

1. An aerobic fermentation device of high-efficient oxygen suppliment for sludge treatment, characterized in that: the aerobic fermentation device comprises a tank body (1), a main motor (21), a main shaft (22), layering blades (24), a discharging hopper (3) and an air injection component (4), wherein the outer surface side wall of the tank body (1) is fixed on a foundation, the main motor (21) is arranged at the top of the tank body (1), the main motor (21) is internally provided with a vertical main shaft (22) towards the tank body (1), the main shaft (22) is provided with a plurality of layering blades (24) which are axially distributed, the discharging hopper (3) is arranged above the tank body (1), the discharging hopper (3) breaks sludge into particles and inputs the particles into the upper layer of the tank body (1), the air injection component (4) is arranged at the lower part of the tank body (1), the air injection component (4) injects air into the tank body (1), the tank body (1) comprises a bottom disc (11) at the bottom, and the bottom disc (11) is provided with a bottom hole (12);
the aerobic fermentation device further comprises a shielding plate (26) and a discharging plate (27), the main shaft (22) penetrates out of the chassis (11), the shielding plate (26) is fixed at the lower part of the main shaft (22), the shielding plate (26) is higher than the chassis (11), the discharging plate (27) is fixed at the bottom end of the main shaft (22), the upper surface of the discharging plate (27) is tightly attached to the lower surface of the chassis (11), a material hole (271) is formed in the discharging plate (27), and on the projection of a horizontal plane, the material hole (271) and the bottom hole (12) are overlapped, and the material hole (271) is fully covered by the shielding plate (26);
the aerobic fermentation device further comprises an electrode (51) and an air pump (53), wherein the electrode (51) is arranged in the discharging hopper (3), the electrode (51) is inserted into sludge to be sent to the tank body (1) in the discharging hopper (3), the electrode (51) detects the conductivity of the sludge, an air pumping hole of the air pump (53) is connected with the top of the tank body (1), and the air pump (53) is connected with the electrode (51) through electric signals;
the aerobic fermentation device further comprises a pressure sensor (52), wherein the pressure sensor (52) is arranged at the top of the tank body (1) and detects the air pressure at the top of the tank body (1), and the pressure sensor (52) is electrically connected with an air pump (53);
the aerobic fermentation device further comprises a reinforcing rod (25), and the reinforcing rod (25) is vertically connected with a plurality of layering blades (24);
the reinforcing rod (25) is internally provided with a vertical core hole (251), 1/4-1/3 of ethanol is filled in the core hole (251), and the residual space of the core hole (251) is vacuumized to 20-30 kPa.
2. The high-efficiency oxygen-supplying aerobic fermentation apparatus for sludge treatment according to claim 1, wherein: the aerobic fermentation device further comprises a stirring plate (23), wherein the stirring plate (23) is arranged on the upper part of the main shaft (22), and the plate surface of the stirring plate (23) is vertical and extends along the radial direction of the main shaft (22).
3. The high-efficiency oxygen-supplying aerobic fermentation apparatus for sludge treatment according to claim 1, wherein: the gas injection assembly (4) comprises a gas distribution ring (41), the gas distribution ring (41) surrounds the main shaft (22), and a plurality of gas outlet holes (42) are formed in the gas distribution ring (41) downwards.
CN202310111875.8A 2023-02-14 2023-02-14 High-efficient oxygen suppliment aerobic fermentation device is used in sludge treatment Active CN116282789B (en)

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