CN220520399U - Municipal sludge aerobic fermentation experimental device - Google Patents
Municipal sludge aerobic fermentation experimental device Download PDFInfo
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- CN220520399U CN220520399U CN202321766535.0U CN202321766535U CN220520399U CN 220520399 U CN220520399 U CN 220520399U CN 202321766535 U CN202321766535 U CN 202321766535U CN 220520399 U CN220520399 U CN 220520399U
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- 238000010564 aerobic fermentation Methods 0.000 title claims abstract description 26
- 239000010802 sludge Substances 0.000 title claims abstract description 23
- 230000004151 fermentation Effects 0.000 claims abstract description 144
- 238000000855 fermentation Methods 0.000 claims abstract description 140
- 238000005070 sampling Methods 0.000 claims abstract description 82
- 238000005273 aeration Methods 0.000 claims abstract description 53
- 239000000463 material Substances 0.000 claims abstract description 35
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 18
- 238000005406 washing Methods 0.000 claims abstract description 18
- 238000007789 sealing Methods 0.000 claims abstract description 13
- 239000002253 acid Substances 0.000 claims abstract description 10
- 230000001877 deodorizing effect Effects 0.000 claims abstract description 8
- 238000001179 sorption measurement Methods 0.000 claims abstract description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 16
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 13
- 238000005260 corrosion Methods 0.000 claims description 13
- 229910052760 oxygen Inorganic materials 0.000 claims description 13
- 239000001301 oxygen Substances 0.000 claims description 13
- 238000003780 insertion Methods 0.000 claims description 12
- 230000037431 insertion Effects 0.000 claims description 12
- 238000005554 pickling Methods 0.000 claims description 10
- 238000001514 detection method Methods 0.000 claims description 9
- 230000002093 peripheral effect Effects 0.000 claims description 4
- 239000003513 alkali Substances 0.000 claims description 3
- 238000004332 deodorization Methods 0.000 claims description 3
- 238000009826 distribution Methods 0.000 claims description 2
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 230000000694 effects Effects 0.000 abstract description 2
- 238000004088 simulation Methods 0.000 abstract description 2
- 239000002699 waste material Substances 0.000 abstract description 2
- 239000007789 gas Substances 0.000 description 17
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 10
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 9
- 238000004519 manufacturing process Methods 0.000 description 9
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 8
- 238000009264 composting Methods 0.000 description 7
- 238000002474 experimental method Methods 0.000 description 7
- 101100372509 Mus musculus Vat1 gene Proteins 0.000 description 6
- 238000004140 cleaning Methods 0.000 description 6
- 230000007797 corrosion Effects 0.000 description 6
- 239000007788 liquid Substances 0.000 description 6
- 238000000034 method Methods 0.000 description 6
- 239000002912 waste gas Substances 0.000 description 6
- 229910021529 ammonia Inorganic materials 0.000 description 5
- 239000000203 mixture Substances 0.000 description 5
- RWSOTUBLDIXVET-UHFFFAOYSA-N Dihydrogen sulfide Chemical compound S RWSOTUBLDIXVET-UHFFFAOYSA-N 0.000 description 4
- 229910000037 hydrogen sulfide Inorganic materials 0.000 description 4
- 238000009529 body temperature measurement Methods 0.000 description 3
- 238000005259 measurement Methods 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- RAHZWNYVWXNFOC-UHFFFAOYSA-N Sulphur dioxide Chemical compound O=S=O RAHZWNYVWXNFOC-UHFFFAOYSA-N 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 239000004568 cement Substances 0.000 description 2
- 230000001276 controlling effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- 238000009776 industrial production Methods 0.000 description 2
- 238000001802 infusion Methods 0.000 description 2
- 238000006386 neutralization reaction Methods 0.000 description 2
- 239000003973 paint Substances 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- 238000009423 ventilation Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 210000003608 fece Anatomy 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000010806 kitchen waste Substances 0.000 description 1
- 244000144972 livestock Species 0.000 description 1
- 239000010871 livestock manure Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 244000144977 poultry Species 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
- 230000007306 turnover Effects 0.000 description 1
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- Processing Of Solid Wastes (AREA)
Abstract
The utility model provides a municipal sludge aerobic fermentation experimental device, which relates to the field of waste treatment experimental equipment and comprises a fermentation system, an aeration system, a deodorizing system and a control system. The fermentation system comprises a fermentation tank, a top cover arranged at the top of the fermentation tank and used for sealing the fermentation tank, a supporting layer arranged in the fermentation tank, and 2 stirrers arranged between the supporting layer and the top cover; the fermentation tank is a hollow cuboid with the length of 3-5m, the width of 1-2m and the height of 1.5m; a plurality of sampling ports are uniformly distributed on the top cover; a plurality of temperature measuring holes are respectively formed in two long side faces of the fermentation tank, a rubber plug is arranged on each temperature measuring hole, a fracture for the thermometer to be inserted into the fermentation tank from the outer side of the fermentation tank is formed in each rubber plug, cobbles are evenly paved on the supporting layer, and materials are stacked on the cobbles. The aeration system consists of an aeration blower and a perforated aeration pipe. The deodorizing system comprises a centrifugal fan, an acid washing tower, an alkaline washing tower, an activated carbon adsorption box and an exhaust drum; the beneficial effects are that: the device has more accurate simulation experiment effect.
Description
Technical Field
The utility model belongs to the field of waste treatment experimental equipment, and particularly relates to a municipal sludge aerobic fermentation experimental device.
Background
Along with the sustainable development of the water treatment industry in China, the method has higher requirements on the treatment and disposal of the sludge of the urban domestic sewage treatment plant, and the existing treatment modes mainly comprise sanitary landfill, incineration, heat drying, composting and the like, so that the aerobic fermentation becomes a good choice for municipal sludge treatment in terms of treatment cost, harmless degree and resource utilization. The municipal sludge has large treatment capacity, the gas composition, the production amount and the change rule generated in the aerobic fermentation process are different, the temperature, the water content and the generated gas in the material fermentation process are analyzed and researched through an experimental device, and the composition of the fermented material is regulated and controlled so as to reduce the production cost, reduce the emission amount of harmful gases such as sulfur dioxide, ammonia, odor and the like generated in the fermentation process and reduce the loss of nitrogen.
However, in order to be convenient, the existing fermentation experimental device generally selects a tank type fermentation kettle with smaller volume for convenient operation, the tank type fermentation kettle has the defects of small volume and small capacity, the composting process of an actual factory cannot be simulated through practical application, parameters of each position and height of a fermentation tank are not uniform in reality, the fermentation kettle only collects single-point data due to limited volume, so that experimental simulation data cannot guide practical production data well during practical operation, the problems of anaerobic odor generation, slow temperature rise of a fermentation pile body, immature fermentation, large addition amount of auxiliary materials and the like are particularly solved,
in order to solve the problems, a municipal sludge aerobic fermentation experimental device is developed, a trough type aerobic fermentation process is simulated, and the problems encountered in production are solved through experiments.
Disclosure of Invention
In order to solve the problems, the utility model provides the municipal sludge aerobic fermentation experimental device which has good reference property on the tank fermentation system by the data obtained in the experimental process, can obtain the data of composting time, aeration rate, aeration time, C/N ratio, temperature control and the like through a plurality of groups of experiments, and provides powerful data support for industrial production.
The technical scheme of the utility model is as follows:
an experimental device for aerobic fermentation of municipal sludge comprises a fermentation system, an aeration system, a deodorizing system and a control system.
The fermentation system comprises a fermentation tank, a top cover arranged at the top of the fermentation tank and used for sealing the fermentation tank, a supporting layer arranged in the fermentation tank, and a stirrer arranged between the supporting layer and the top cover;
further, the fermentation tank is a hollow cuboid, and has the length of 3-5m, the width of 1-2m and the height of 1.2-1.8m; highly preferably 1.5m;
the interior of the fermentation tank and the inner layer of the top cover are integrally provided with an anti-corrosion layer, and the anti-corrosion layer is sprayed with anti-corrosion and anti-wear paint which can resist high temperature and acid and alkali gas corrosion;
the top cover is in a convex shape on a plane and comprises an embedded plate embedded into the fermentation tank and a cover plate buckled on the top surface of the fermentation tank, sealing strips, preferably rubber sealing strips, are arranged between the embedded plate and four sides in the fermentation tank, and the embedded plate is fixedly connected; at least two handles are arranged at the top of the cover plate, and the top cover has a certain weight and can be made of cement and/or metal materials;
the top cover is at least provided with 2 rows and 3 columns of 6 sampling ports, a plurality of sampling ports are uniformly distributed on the top cover, the sampling ports are provided with a detachable and connected 'convex' -shaped sampling cover, the sampling cover comprises a clamping block clamped in the sampling ports and a sampling plate with the diameter larger than that of the sampling ports, and the outer peripheral surface of the clamping block and the bottom surface of the sampling plate are both provided with high-temperature-resistant rubber layers;
the sampling plate is provided with a circular detection port, the detection port is provided with a high-temperature-resistant rubber plug, and the rubber plug is provided with an insertion port into which the cross oxygen supply content measuring instrument is inserted; the sampling plate is provided with a handle;
the sampling cover is buckled on the sampling port when sampling is not performed, the sampling cover is manually opened for sampling when sampling is performed, the size of the sampling port is between 10cm and 20cm, the insertion requirements of objects such as a Luoyang shovel, a long clamp, an oxygen content tester and the like can be met, and the sampling port is used for taking out a sample in a fermentation tank stack body or measuring the oxygen content;
further, when the number of the sampling ports is 6, the middle row of sampling ports in the 3 rows of sampling ports are positioned at the middle position in the length direction of the fermentation tank, and the other two rows of sampling ports are respectively positioned at the middle positions of the middle row of sampling ports and the two ends of the fermentation tank;
the fermentation tank is characterized in that at least 2 rows of 3 rows of 6 temperature measuring holes are respectively arranged on two long side surfaces of the fermentation tank, a plurality of temperature measuring holes are uniformly distributed on the side surfaces, a high-temperature-resistant rubber plug is arranged on the temperature measuring holes, a fracture for a thermometer to be inserted into the fermentation tank from the outer side of the fermentation tank is arranged on the rubber plug, and the rubber plug prevents materials and gas in the fermentation tank from leaking out to the environment through the temperature measuring holes.
Further, when the number of the temperature measuring holes is 6, the middle row of temperature measuring holes in the 3 rows of temperature measuring holes are positioned at the middle position in the length direction of the fermentation tank, the other two rows of temperature measuring holes are respectively positioned at the middle positions of the middle row of temperature measuring holes and the two ends of the long side face,
furthermore, the rubber plug is high-temperature resistant, the thermometer is a glass thermometer, the holes are cross-shaped holes, preferably convex, the rubber plug and the long side face are connected in a threaded and clamping manner, and the rubber plug is convenient to replace after being used for a period of time;
cobblestones are evenly paved on the supporting layer, materials are stacked on the cobblestones, and the height of the materials is controlled to be 0.5-1m when composting experiments are carried out.
The support layer may be a grid with support capability and ventilation.
Further, the number of the stirrers is 1-2, and after fermentation for a period of time, the materials in the fermentation tank are turned, planed and mixed uniformly.
Further, when the quantity of agitator is 2, two the agitator sets up from top to bottom between fermentation vat top and supporting layer, two the both ends of agitator set up respectively in fermentation vat length direction's both sides, and can follow fermentation vat width direction round trip movement turns over the material in the fermentation vat, and in the fermentation process, after opening the agitator, through stirring turn over the plane, can with upper portion material and bottom material misce bene in the fermentation vat.
The aeration system consists of an aeration blower and perforated aeration pipes, wherein a plurality of rows of perforated aeration pipes which are arranged in parallel and equidistantly are arranged at the bottom of the supporting layer, and one ends of the plurality of rows of aeration pipes are connected in parallel and communicated with the aeration blower; the aeration system provides oxygen for the aerobic fermentation process, and the aeration system sets timing aeration, namely sectional aeration, through the control system.
The deodorizing system comprises a centrifugal fan, a pickling tower, an alkaline cleaning tower, an active carbon adsorption box and an exhaust drum which are sequentially communicated through air pipes, wherein an air outlet is formed in the top cover, the air pipes are communicated with the inside of the fermentation tank through the air outlets, the centrifugal fan introduces smell in the fermentation tank into the pickling tower through the air pipes, the pickling tower adopts dilute sulfuric acid cleaning solution to perform neutralization reaction with ammonia components in waste gas to remove ammonia components in the smell, and then the gas enters the alkaline cleaning tower through the air pipes to absorb acid gases such as hydrogen sulfide in the waste gas and remove the acid gas components such as hydrogen sulfide in the smell through sodium hydroxide cleaning solution; and the waste gas is discharged through an exhaust funnel after being adsorbed and deodorized by the activated carbon.
Further, a condensate water collector is arranged on the air pipe between the air outlet and the centrifugal fan to prevent condensate water from entering the centrifugal fan.
A circulating water pump is arranged in the acid washing tower and the alkali washing tower;
the control system comprises a power distribution cabinet, a control cabinet, wires, cables and PLC equipment, wherein the aeration blower, the centrifugal fan, the stirrer, the condensate water collector, the pickling tower, the alkaline washing tower, the activated carbon adsorption tank and the circulating water pump are electrically connected with the PLC equipment, and the control system is used for controlling the equipment of the whole composting system to automatically start, stop and operate.
The beneficial effects of the utility model are as follows:
the utility model simulates the tank type aerobic fermentation system, the data obtained in the experimental process has good reference performance to the tank type fermentation system, and through a plurality of groups of experiments, the data such as composting time, aeration rate, aeration time, C/N ratio, temperature control and the like can be obtained, so that powerful data support is provided for industrial production.
The fermentation tank is a hollow cuboid, the height of the material at the later stage is controlled to be 0.5-1m, and the material is cuboid and 3-5m long, so that a plurality of points can be taken along the length direction, fermentation conditions at different positions can be conveniently obtained, the width of the fermentation tank is combined, the fermentation tank is more close to the reduced version of the fermentation tank in actual production, through actual use, the experimental device is enough to control an aeration system, a deodorizing system and a control system through actually measuring the values at all positions, the optimal control parameters are obtained, and the basis is provided for the later production.
The height is 1.5m, and the height is just convenient for manual operation.
In order to avoid corrosion problems in the fermentation process, the inner part of the fermentation tank and the inner layer of the top cover are integrally brushed with an anti-corrosion layer; in order to improve the tightness, the top cover is arranged in a convex shape, and the sealing strip further improves the tightness; at least two handles are arranged on the top of the cover plate, so that the cover plate can be removed by a crane before fermenting and filling materials and after the experiment is completed, and the convenience is improved.
The top cover is provided with 2 rows and 3 columns of 6 sampling ports, and through reasonable arrangement of positions, the sampling ports can sample at different positions, and the ports are enough for the us to obtain data of different positions of the whole fermentation tank.
In order to avoid gas leakage in the fermentation process, a 'convex' sampling cover which is detachably connected is arranged on the sampling port, and the clamping block is clamped into the sampling port, and the outer peripheral surface of the clamping block and the bottom surface of the sampling plate are both provided with a high-temperature-resistant rubber layer, so that the sealing performance is improved, and the corrosion resistance is improved.
The sampling plate is also provided with a circular detection port, the detection port is provided with a high-temperature-resistant rubber plug, the rubber plug is like a rubber plug on a medical infusion bottle, the daily state is closed, the situation that a sharp object is inserted into the rubber plug to obtain the interior of a fermentation tank can be obtained, after the sharp object is extracted, a fracture appears on the rubber plug, the fracture is an insertion port, a later-stage oxygen content meter, a thermometer and the like can be inserted into the insertion port, the insertion port is recovered to be original after the sharp object is extracted, and liquid and smell cannot be dispersed from the insertion port;
the utility model provides a fermentation vat, including the fermentation vat, the fermentation vat is equipped with 2 rows of 3 rows of 6 temperature measurement holes on two long sides respectively, through rational arrangement, just so can obtain the variation value of different positions in a plurality of positions measurement temperature of two long sides, in order to avoid material in the fermentation vat, gas leak the environment through the temperature measurement hole, be equipped with high temperature resistant rubber buffer on the temperature measurement hole, the rubber buffer is like the medical rubber buffer described above, be equipped with the fracture that supplies the thermometer to insert fermentation vat outside to fermentation vat inside on the rubber buffer, the thermometer inserts the fracture internal energy measurement temperature, the fracture is closed state again after the thermometer is taken out, because the thermometer of this application, oxygen content analyzer etc. are all not fixed in the fermentation vat consequently do not influence follow-up turning over and throw.
The rubber plug and the long side face are connected in a threaded and clamping way, and after the rubber plug is used for a period of time, the rubber plug can be conveniently replaced if the rubber plug is aged or damaged;
the number of the stirrers is 2, and the two stirrers uniformly mix the upper material and the bottom material in the fermentation tank.
The utility model is also suitable for the aerobic fermentation of kitchen waste and livestock and poultry manure.
Drawings
FIG. 1 is a schematic diagram of an experimental device for aerobic fermentation of municipal sludge;
FIG. 2 is a schematic diagram of a fermenter;
FIG. 3 is a sectional view of a fermentation tank;
FIG. 4 is a schematic view of a top cover;
FIG. 5 is a schematic view of a perforated aeration tube;
in the figure:
1. fermentation tank 2, top cover 3 and supporting layer
4. Stirrer 5, insert plate 6, cover plate
7. Sampling port 8, sampling cap 9 and clamping block
10. Sampling plate 11, detection port 12 and temperature measuring hole
13. Rubber stopper 14, aeration blower 15, perforated aeration pipe
16. Air pipe 17, centrifugal fan 18 and pickling tower
19. Alkaline washing tower 20, active carbon adsorption box 21 and exhaust drum
22. Condensate collector 23, long side
Detailed Description
The embodiment relates to a municipal sludge aerobic fermentation experimental device, which consists of a fermentation system, an aeration system, a deodorizing system and a control system.
The fermentation system comprises a fermentation tank 1, a top cover 2 arranged at the top of the fermentation tank 1 and used for sealing the fermentation tank 1, a supporting layer 3 arranged in the fermentation tank 1, and a stirrer 4 arranged between the supporting layer 3 and the top cover 2;
firstly, the fermentation tank 1 is a hollow cuboid, the length is 4m, the width is 1.5m, the height is just convenient for manual operation, the later-stage material height is controlled to be 0.5-1m, a plurality of points can be taken along the length direction because of the cuboid and the length is 4m, the fermentation conditions of different positions can be conveniently obtained, the width of the fermentation tank 1 is combined, the fermentation tank 1 is more close to the reduced version of the fermentation tank 1 in actual production, through actual use, the experimental device is enough to control an aeration system, a deodorizing system and a control system through actually measuring the values of all positions, the optimal control parameters are obtained, and a basis is provided for later-stage production.
In order to avoid corrosion problems in the fermentation process, the inner layers of the inner part 1 and the top cover 2 of the fermentation tank are integrally brushed with an anti-corrosion layer, wherein the anti-corrosion layer is paint;
in order to improve the sealing performance, the top cover 2 is arranged in a convex shape and comprises an embedded plate 5 embedded into the fermentation tank 1 and a cover plate 6 buckled on the top surface of the fermentation tank 1, and the embedded plate 5 is embedded into the fermentation tank 1, so that the sealing effect is improved, and in order to further improve the sealing performance, sealing strips made of rubber are arranged between the embedded plate 5 and four sides in the fermentation tank 1; the top cover 2 is made of cement and/or metal, so that the top cover can be buckled on the fermentation tank 1 by means of gravity; for convenience, at least two handles are provided on top of the cover plate 6, so that the cover plate 6 can be removed by a crane before fermenting the filling material and after the experiment is completed.
The top cover 2 is provided with 6 sampling ports 7 in 2 rows and 3 columns, a plurality of sampling ports 7 are uniformly distributed on the top cover 2, the middle row of sampling ports 7 in 3 columns of sampling ports 7 are positioned at the middle position of the length direction of the fermentation tank 1, and the other two rows of sampling ports 7 are respectively positioned at the middle positions of the middle row of sampling ports 7 and the two ends of the fermentation tank 1; thus, we can sample at different positions, and the ports are enough for us to obtain data of different positions of the whole fermentation tank 1.
In order to avoid gas leakage in the fermentation process, a 'convex' sampling cover 8 which is detachably connected is arranged on the sampling port 7, the sampling cover 8 comprises a clamping block 9 clamped into the sampling port 7 and a sampling plate 10 with the diameter larger than the diameter of the sampling port 7, the diameter of the sampling plate 10 is larger than the diameter of the sampling port 7, and therefore the sampling plate 10 is clamped on the top cover 2, the installation of the sampling cover 8 is completed, and further, the clamping block 9 is clamped into the sampling port 7, and the outer peripheral surface of the clamping block 9 and the bottom surface of the sampling plate 10 are both provided with a high-temperature-resistant rubber layer, so that the tightness is improved, the corrosion resistance is improved, and the high-temperature-resistant rubber layer is made of high corrosion-resistant materials.
The sampling plate 10 is also provided with a circular detection port 11, the detection port 11 is provided with a high-temperature-resistant rubber plug 13, the rubber plug 13 is like the rubber plug 13 on a medical infusion bottle, the daily state is closed, the situation that the inside of the fermentation tank 1 can be obtained by inserting a sharp object into the rubber plug 13, after the sharp object is extracted, the rubber plug 13 is provided with a fracture, the fracture is an insertion port, a later oxygen content tester, a thermometer and the like can be inserted from the insertion port, and after the sharp object is extracted, the insertion port is recovered to be the original state and liquid and smell cannot be dispersed from the insertion port;
the sampling plate 10 is provided with a handle, the sampling cover 8 is buckled on the sampling port 7 when sampling is not performed, the sampling cover 8 is opened by manually pulling the handle when sampling is performed, the size of the sampling port 7 is 10cm, at the moment, the sampling work in the fermentation process can be completed through the insertion of objects such as a Luoyang shovel, a long clip, an oxygen content tester and the like, and the sampling port 7 is used for taking out the samples in the fermentation tank 1 stack or measuring the oxygen content;
further, 2 rows of 6 temperature measuring holes 12 are respectively arranged on two long side surfaces of the fermentation tank 1, 3 rows of temperature measuring holes 12 are respectively arranged in the middle of the temperature measuring holes 12 and are positioned at the middle position in the length direction of the fermentation tank 1, the other two rows of temperature measuring holes 12 are respectively positioned at the middle positions of the mouths of the middle row of temperature measuring holes 12 and the two ends of the long side surfaces, a plurality of temperature measuring holes 12 are uniformly distributed on the side surfaces, so that the temperature can be measured at a plurality of positions of the two long side surfaces to obtain the change values of different positions, in order to avoid the leakage of materials and gas in the fermentation tank 1 to the environment through the temperature measuring holes 12, a rubber plug 13 is arranged on the temperature measuring holes 12, and the rubber plug 13 is provided with a fracture for inserting a thermometer into the fermentation tank 1 from the outer side of the fermentation tank 1 as in the medical rubber plug 13, the fracture is in which the thermometer can be inserted into the fermentation tank 1, the fracture can be used for measuring the temperature after the thermometer is extracted, and the fracture is in a closed state.
And further controlling the aeration quantity, aeration time, aeration temperature, turning and the like of the aeration system through the measured data, and recording the data to provide basis for the follow-up actual production.
The rubber plug 13 is high-temperature resistant, the thermometer is a glass thermometer, the hole is a cross-shaped hole, preferably a convex shape, the rubber plug 13 and the long side face are connected in a threaded and clamping mode, namely, one narrow end of the rubber plug 13 is screwed into the temperature measuring hole 12 of the long side face through threads, the wide end of the rubber plug is clamped on the long side face and cannot be clamped into the temperature measuring hole 12, and when the rubber plug 13 is used for a period of time, the rubber plug 13 can be conveniently replaced if the rubber plug 13 is aged or damaged;
further, cobbles are uniformly paved on the supporting layer 3, materials are stacked on the cobbles, and the height of the materials is controlled to be 0.5-1m when a composting experiment is carried out.
The support layer 3 may be a grid with support capacity and ventilation.
Further, the quantity of agitator 4 is 2 for after fermentation a period, will the material in the fermentation vat 1 turns over the plane and mixes, in the in-service use, two agitator 4 upper and lower sets up between fermentation vat 1 top and supporting layer 3, two agitator 4's both ends set up respectively in fermentation vat 1 length direction's both sides, and can follow fermentation vat 1 width direction round trip movement turns over the material in the fermentation vat 1, and in-process, opens agitator 4 back, through stirring turns over the plane, can with upper portion material and bottom material misce bene in the fermentation vat 1.
The aeration system consists of an aeration blower 14 and perforated aeration pipes 15, wherein a plurality of rows of perforated aeration pipes 15 which are arranged in parallel and equidistantly are arranged at the bottom of the supporting layer 3, and one ends of the plurality of rows of aeration pipes are connected in parallel and communicated with the aeration blower 14; the aeration system provides oxygen for the aerobic fermentation process, and the aeration system sets timing aeration, namely sectional aeration, through the control system.
The deodorization system comprises a centrifugal fan 17, a pickling tower 18, an alkaline washing tower 19, an activated carbon adsorption box 20 and an exhaust drum 21 which are sequentially communicated through an air pipe 16, an air outlet is formed in the top cover 2, the air pipe 16 is communicated with the inside of the fermentation tank 1 through the air outlet, and the centrifugal fan 17 introduces smell in the fermentation tank 1 into the pickling tower 18 through the air pipe 16.
The experimental engineering of the experimental device for aerobic fermentation of municipal sludge is as follows:
1. paving auxiliary materials with the thickness of 2-5cm on the cobble, wherein the whole cobble is required to be fully paved.
2. According to the experimental requirement proportion, municipal sludge, returned materials, auxiliary materials and the like are uniformly mixed, the mixture is filled into the fermentation tank 1 from the top of the fermentation tank 1, after the mixture is filled, the height of the material is uniform, and the height of the filled material is not more than 1m.
3. The top cover 2 is covered, and the aeration system and the deodorization system are started.
4. In the fermentation process, according to experimental requirements, temperature data are measured by inserting a thermometer from the side wall of the fermentation tank 1, and the sampling port 7 is opened to perform operations such as oxygen content measurement, sampling and the like.
5. In the fermentation process, a control system controls the aeration blower 14, the centrifugal blower 17, the stirrer 4, the condensate water collector 2322, the pickling tower 18, the alkaline washing tower 19, the activated carbon adsorption tank 20 and the circulating water pump according to parameters, adjusts parameters such as aeration gas temperature, time and aeration quantity, performs turning according to experimental requirements, confirms that a thermometer, an oxygen content tester and the like in the fermentation tank 1 are taken out before turning, and then starts the stirrer 4 for turning. In the above process, the waste gas is introduced into the sulfuric acid tower by the aeration blower 14 through the air pipe 16, the acid washing tower 18 adopts dilute sulfuric acid washing liquid to perform neutralization reaction with ammonia components in the waste gas to remove ammonia components in odor, and then the gas enters the alkaline cleaning tower through the air pipe 16 to absorb acid gases such as hydrogen sulfide in the waste gas and remove acid gas components such as hydrogen sulfide in the odor through sodium hydroxide cleaning liquid; the exhaust gas is then discharged through the exhaust pipe 21 after being adsorbed and deodorized by the activated carbon.
A condensate water collector 2322 is arranged on the air pipe 16 between the air outlet and the centrifugal fan 17 to prevent condensate water from entering the centrifugal fan 17. The pickling tower 18 and the alkaline washing tower 19 are internally provided with circulating water pumps, so that dilute sulfuric acid washing liquid and sodium hydroxide washing liquid can be repeatedly used;
6. the fermentation can be completed generally for more than 20 days, and after the completion of the fermentation is confirmed, the top cover 2 is opened, and then the material is discharged manually.
In the description of the present utility model, it should be understood that the terms "upper," "lower," "front," "rear," "left," "right," "top," "bottom," "inner," "outer," and the like indicate orientations or positional relationships based on the orientation or positional relationships shown in fig. 1, merely to facilitate description of the present utility model and simplify the description, and do not indicate or imply that the devices or elements being referred to must have a particular orientation, be configured and operated in a particular orientation, and thus should not be construed as limiting the present utility model.
The foregoing describes one embodiment of the present utility model in detail, but the description is only a preferred embodiment of the present utility model and should not be construed as limiting the scope of the utility model. All equivalent changes and modifications within the scope of the present utility model are intended to be covered by the present utility model.
Claims (9)
1. An aerobic fermentation experimental device for municipal sludge, which is characterized in that: the system consists of a fermentation system, an aeration system, a deodorization system and a control system;
the fermentation system comprises a fermentation tank, a top cover arranged at the top of the fermentation tank and used for sealing the fermentation tank, a supporting layer arranged in the fermentation tank, and a stirrer arranged between the supporting layer and the top cover;
the fermentation tank is a hollow cuboid, and has the length of 3-5m, the width of 1-2m and the height of 1.2-1.8m;
the top cover is at least provided with 2 rows and 3 columns of 6 sampling ports, a plurality of sampling ports are uniformly distributed on the top cover, and the sampling ports are provided with sampling covers which are detachably connected;
at least 2 rows of 3 columns of 6 temperature measuring holes are respectively arranged on the two long side surfaces of the fermentation tank, a plurality of temperature measuring holes are uniformly distributed on the side surfaces, rubber plugs are arranged on the temperature measuring holes, and a fracture for inserting a thermometer into the fermentation tank from the outer side of the fermentation tank is formed in the rubber plugs.
2. The municipal sludge aerobic fermentation experimental device according to claim 1, wherein:
the top cover is in a convex shape on a plane and comprises an embedded plate embedded into the fermentation tank and a cover plate buckled on the top surface of the fermentation tank, and sealing strips are arranged between the embedded plate and four sides in the fermentation tank;
the sampling cover is in a convex shape and comprises a clamping block clamped in the sampling port and a sampling plate with the diameter larger than that of the sampling port; the outer peripheral surface of the clamping block and the bottom surface of the sampling plate are respectively provided with a rubber layer;
the rubber plug is in a convex shape, and the rubber plug and the long side face are connected in a threaded and clamping mode.
3. The municipal sludge aerobic fermentation experimental device according to claim 2, wherein: an anti-corrosion layer is integrally arranged in the fermentation tank and the inner layer of the top cover; at least two handles are arranged at the top of the cover plate, and handles are arranged on the sampling plate.
4. A municipal sludge aerobic fermentation experimental apparatus according to claim 3, wherein: the sampling plate is provided with a circular detection port, the detection port is provided with a rubber plug, and the rubber plug is provided with an insertion port into which the oxygen supply content measuring instrument is inserted; the size of the sampling port is between 10cm and 20 cm;
when the number of the sampling ports is 6, the middle row of sampling ports in the 3 rows of sampling ports are positioned at the middle position in the length direction of the fermentation tank, and the other two rows of sampling ports are respectively positioned at the middle positions of the middle row of sampling ports and the two ends of the fermentation tank;
when the number of the temperature measuring holes is 6, the middle row of temperature measuring holes in the 3 rows of temperature measuring holes are positioned at the middle position in the length direction of the fermentation tank, and the other two rows of temperature measuring holes are respectively positioned at the middle positions of the middle row of temperature measuring holes and the two ends of the long side face.
5. The municipal sludge aerobic fermentation experimental device according to claim 4, wherein: cobblestones are uniformly paved on the supporting layer, materials are stacked on the cobblestones, and the height of the materials is 0.5-1m;
the number of the stirrers is 1-2, when the number of the stirrers is 2, two stirrers are arranged between the top of the fermentation tank and the supporting layer up and down, and two ends of the stirrers are respectively arranged on two sides of the length direction of the fermentation tank and move back and forth along the width direction of the fermentation tank.
6. The municipal sludge aerobic fermentation experimental device according to any one of claims 1-5, wherein: the aeration system consists of an aeration blower and perforated aeration pipes, wherein a plurality of rows of perforated aeration pipes which are arranged in parallel and equidistantly are arranged at the bottom of the supporting layer, and one ends of the plurality of rows of aeration pipes are connected in parallel and communicated with the aeration blower.
7. The municipal sludge aerobic fermentation experimental device according to claim 6, wherein: the deodorizing system comprises a centrifugal fan, an acid washing tower, an alkaline washing tower, an activated carbon adsorption box and an exhaust drum which are sequentially communicated through an air pipe, an air outlet is formed in the top cover, and the air pipe is communicated with the inside of the fermentation tank through the air outlet.
8. The municipal sludge aerobic fermentation experimental device according to claim 7, wherein: a condensate water collector is arranged on the air pipe between the air outlet and the centrifugal fan; and circulating water pumps are arranged in the acid washing tower and the alkali washing tower.
9. The municipal sludge aerobic fermentation experimental device according to claim 7, wherein: the control system comprises a power distribution cabinet, a control cabinet, wires, cables and PLC equipment, wherein the aeration blower, the centrifugal fan, the stirrer, the condensate water collector, the pickling tower, the alkaline washing tower, the activated carbon adsorption tank and the circulating water pump are all electrically connected with the PLC equipment.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202321766535.0U CN220520399U (en) | 2023-07-06 | 2023-07-06 | Municipal sludge aerobic fermentation experimental device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202321766535.0U CN220520399U (en) | 2023-07-06 | 2023-07-06 | Municipal sludge aerobic fermentation experimental device |
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| CN220520399U true CN220520399U (en) | 2024-02-23 |
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| CN202321766535.0U Active CN220520399U (en) | 2023-07-06 | 2023-07-06 | Municipal sludge aerobic fermentation experimental device |
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