Method for reducing antibiotic mushroom dregs

Abstract

The invention relates to the technical field of antibiotic mushroom dreg treatment, in particular to a method for reducing antibiotic mushroom dreg. The method comprises the following steps: drying granular antibiotic mushroom dregs until the moisture content is 10-28% by adopting a hot air drying mode; the temperature of the hot air drying is 52-58 DEG C. According to the method, hot air drying is adopted, the temperature condition of hot air drying is limited, the problems caused by incineration treatment in the antibiotic mushroom dreg treatment process can be solved, the antibiotic mushroom dreg reduction efficiency is high, and the reduction rate reaches up to 53%. The reduction equipment is used for treating the antibiotic mushroom dregs, the hot air drying process is totally closed, no waste gas is discharged, the chemical properties of the mushroom dregs are not changed in the reduction process, no secondary pollution is generated, the quantity of the air-dried mushroom dregs is small, the mushroom dregs are easy to package, store, transfer and follow-up further harmless incineration standard treatment, and the ecological environment and human health are protected. The strict environmental protection control requirement is met, and the economic benefit is very considerable.

Description

Technical Field

[0001] The invention relates to the technical field of antibiotic bacterial residue treatment, and in particular to a method for reducing antibiotic bacterial residue. Background Art

[0002] During the extraction process of fermented antibiotic products, a large amount of antibiotic residues will be produced. These antibiotic residues are mainly composed of microbial mycelium, residual sugar, cellulose, a small amount of vitamins, acid-base inorganic salts, enzymes and other substances, and contain a small amount of antibiotic residues. Antibiotic residues are large in volume, sticky, complex in composition, easy to deteriorate and produce volatile odors, and are difficult to store and transport. If antibiotic residues are not properly disposed of, they will cause serious environmental pollution problems, have potential harm to the ecological environment and human health, and also bring major safety hazards and huge disposal cost pressures to enterprises.

[0003] At present, the most effective method for disposing of antibiotic residues in large quantities is incineration. Incineration can reduce the total amount of antibiotic residues on a large scale in a short period of time, and the volume of residues can be reduced to less than 5% of the original volume. However, when incinerating antibiotic residues, GB 18484-2020 "Hazardous Waste Incineration Pollution Control Standard" must be strictly implemented. The conditions are strict. Except for individual antibiotic companies that have the conditions to build incinerators to incinerate the residues harmlessly, the residues produced by most companies are handed over to qualified third-party disposal agencies for harmless incineration and standardized disposal. In addition, the calorific value of antibiotic residues is low and the moisture content is high, mostly between 50% and 75%. Some residues even have a moisture content of up to 92%. After secondary pressing of the plate frame, the moisture content can reach 40% to 65%. In order to ensure that the incineration is standardized, it is necessary to add additional high-calorific value heavy oil or natural gas fuel auxiliary materials during the incineration process, which greatly increases the cost of incineration operation and energy consumption, causing great waste of resources while also increasing the cost pressure of enterprises in disposing of residues, which is not conducive to the protection of the ecological environment. Summary of the invention

[0004] The object of the present invention is to provide a method for reducing the amount of antibiotic bacterial residue, which can effectively reduce the moisture content and reduction rate of the antibiotic bacterial residue.

[0005] In order to achieve the above-mentioned object of the invention, the present invention provides the following technical solutions:

[0006] The invention provides a method for reducing antibiotic bacterial residue, comprising the following steps: drying granular antibiotic bacterial residue to a moisture content of 10% to 28% by hot air drying; the hot air drying temperature is 52°C to 58°C.

[0007] Preferably, the hot air drying temperature is 54°C to 56°C.

[0008] Preferably, the hot air drying time is 50 to 120 minutes.

[0009] Preferably, the air volume of the hot air drying is 5000m 3 / h~6000m 3 / h.

[0010] Preferably, the initial moisture content of the antibiotic bacterial residue is 40% to 65%.

[0011] Preferably, the granular antibiotic bacterial residue is dried to a moisture content of 15% to 21%.

[0012] Preferably, the diameter of the granular antibiotic bacterial residue is 3.0 mm to 5.0 mm.

[0013] Preferably, the paving thickness of the granular antibiotic residue is 12.0 mm to 20.0 mm.

[0014] Preferably, the hot air drying uses a reduction device; the reduction device includes a closed air drying box, a conveyor mesh belt, a circulating air chamber and an air-conditioning refrigeration component, a circulating air chamber is sealed on the outer side of the closed air drying box, a draft fan and an evaporator and a condenser of the air-conditioning refrigeration component are sequentially arranged in the circulating air chamber, an air outlet and an air inlet are arranged on the closed air drying box, the air outlet is connected to the draft fan, and the air inlet is connected to the air outlet of the circulating air chamber, the closed air drying box is provided with the conveyor mesh belt, the conveyor mesh belt is used to carry the granular antibiotic bacterial residue, the initial end of the conveyor mesh belt receives the feeding mechanism, and the end end receives the slag collecting mechanism.

[0015] The present invention also provides a reduction device for reducing antibiotic bacterial residue, the device comprising a closed air drying box, a conveyor mesh belt, a circulating air chamber and an air conditioning and refrigeration component, a circulating air chamber is sealed on the outer side of the closed air drying box, a draft fan and an evaporator and a condenser of the air conditioning and refrigeration component are sequentially arranged in the circulating air chamber, an air outlet and an air inlet are arranged on the closed air drying box, the air outlet is connected to the draft fan, and the air inlet is connected to the air outlet of the circulating air chamber, the conveyor mesh belt is arranged in the closed air drying box, the conveyor mesh belt is used to carry antibiotic bacterial residue, the initial end of the conveyor mesh belt receives the feeding mechanism, and the end end receives the residue collecting mechanism.

[0016] Beneficial effects:

[0017] The present invention provides a method for reducing antibiotic bacterial residues, comprising the following steps: using hot air drying to dry granular antibiotic bacterial residues to a moisture content of 10% to 28%; the hot air drying temperature is 52°C to 58°C. The present invention uses hot air drying and limits the temperature conditions of hot air drying, which can solve the problems caused by incineration during the treatment of antibiotic bacterial residues. The antibiotic bacterial residue reduction efficiency is high, and the reduction rate is as high as 53%.

[0018] Furthermore, the present invention utilizes reduction equipment to process antibiotic bacterial residues. The hot air drying process is fully enclosed, without exhaust gas emission. The reduction process does not change the chemical properties of the bacterial residues, and no secondary pollution is generated. The amount of bacterial residues after air drying is small, and it is easy to package, store, transport and subsequently further harmless incineration and standardized disposal, which is beneficial to protecting the ecological environment and human health, meets strict environmental protection control requirements, and has considerable economic benefits. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0020] Figure 1 It is a schematic diagram of the structure of the reduction equipment used in the present invention;

[0021] Figure 2 It is a schematic diagram of the principle of the reduction equipment used in the present invention;

[0022] In the figure: 1-strip granulator, 2-slag collecting mechanism, 3-closed air drying box, 4-conveyor mesh belt, 5-circulation air chamber, 6-air outlet, 7-air inlet, 8-induced draft fan, 9-matching mesh belt, 10-feeding port, 11-discharging port, 12-evaporator, 13-condenser, 14-compressor, 15-throttle valve, 16-condensate discharge pipe, 17-temperature sensor, 18-inclined surface. DETAILED DESCRIPTION

[0023] The invention provides a method for reducing antibiotic bacterial residue, comprising the following steps: drying granular antibiotic bacterial residue to a moisture content of 10% to 28% by hot air drying; the hot air drying temperature is 52°C to 58°C.

[0024] As an optional solution, the present invention will extrude and granulate the antibiotic bacteria residue through a granulator to obtain granular antibiotic bacteria residue. As an optional solution, the initial moisture content of the antibiotic bacteria residue of the present invention is 40% to 65%; as another embodiment, the initial moisture content of the antibiotic bacteria residue of the present invention is 50% to 60%; as another embodiment, the initial moisture content of the antibiotic bacteria residue of the present invention is 55%. As an optional solution, the diameter of the granular antibiotic bacteria residue of the present invention is 3.0mm to 5.0mm; as another embodiment, the diameter of the granular antibiotic bacteria residue of the present invention is 4.0mm. The present invention has no strict requirements on the source of the antibiotic bacteria residue, and the by-product bacteria residue produced by the preparation of antibiotics through microbial fermentation can be used.

[0025] After obtaining the granular antibiotic residue, the present invention uses hot air drying to dry the granular antibiotic residue to a moisture content of 10% to 28%. As an optional solution, the present invention uses hot air drying to dry the granular antibiotic residue to a moisture content of 15% to 21%.

[0026] As an optional solution, the present invention performs hot air drying after spreading the granular antibiotic residue. As an optional solution, the granular antibiotic residue has a paving thickness of 12.0 mm to 20.0 mm; as another embodiment, the granular antibiotic residue has a paving thickness of 15.0 mm to 18.0 mm; as another embodiment, the granular antibiotic residue has a paving thickness of 16.0 mm. As an optional solution, the present invention spreads the granular antibiotic residue onto a conveyor belt.

[0027] As an optional solution, the temperature of the hot air drying of the present invention is 54℃~56℃; as another embodiment, the temperature of the hot air drying of the present invention is 55℃. As an optional solution, the time of the hot air drying of the present invention is 50~120min; as another embodiment, the time of the hot air drying of the present invention is 60~100min; as another embodiment, the time of the hot air drying of the present invention is 70~90min; as another embodiment, the time of the hot air drying of the present invention is 80min. As an optional solution, the air volume of the hot air drying of the present invention is 5000m 3 / h~6000m 3 / h; As another embodiment, the air volume of the hot air drying of the present invention is 5500m 3 / h.

[0028] The method provided by the present invention can reduce the moisture content of antibiotic bacterial residue to 10% to 28%, with a reduction rate of up to 53%, thereby solving the related problems caused by the incineration treatment in the prior art.

[0029] As an optional scheme, the hot air drying described in the present invention uses a reduction device; the reduction device includes a closed air drying box, a conveyor mesh belt, a circulating air chamber and an air-conditioning refrigeration component, a circulating air chamber is sealed on the outer side of the closed air drying box, a draft fan and an evaporator and a condenser of the air-conditioning refrigeration component are sequentially arranged in the circulating air chamber, an air outlet and an air inlet are arranged on the closed air drying box, the air outlet is connected to the draft fan, and the air inlet is connected to the air outlet of the circulating air chamber, the closed air drying box is provided with the conveyor mesh belt, the conveyor mesh belt is used to carry the granular antibiotic bacterial residue, the initial end of the conveyor mesh belt receives the feeding mechanism, and the end end receives the slag collecting mechanism.

[0030] As an optional solution, the feeding mechanism of the present invention is a strip granulator, which is used to make the antibiotic bacteria residue after squeezing out water into residue pellets or residue blocks with a maximum size of 3mm to 5mm, and the material thickness is 12.0mm to 20.0mm.

[0031] As an optional solution, the closed air drying box, the circulating air chamber and the air conditioning and refrigeration component of the present invention are arranged in series in several groups according to the moisture content of the antibiotic bacterial residue, and the side walls of the closed air drying boxes of two adjacent groups are fitted together and provided with flow openings for the conveyor mesh belt.

[0032] As an optional solution, the conveyor belt of the present invention comprises an upper conveyor belt and a lower conveyor belt arranged in parallel, one end of the upper conveyor belt receives the feed mechanism through the feed port, one end of the lower conveyor belt receives the end of the upper conveyor belt and the other end falls into the discharge port, the slag collection mechanism receives the discharge port, and the feed port and the discharge port are located in the same closed air drying box. As an optional solution, the upper conveyor belt and the lower conveyor belt of the present invention are both double-layer S-shaped staggered interlocking stainless steel spring mesh belts, and the mesh diameter of the stainless steel spring mesh belt is 1mm to 2mm. As an optional solution, a matching mesh belt is arranged below the upper conveyor belt of the present invention, and the matching mesh belt is inclined toward the blanking end of the upper conveyor belt, and the matching mesh belt is a polyurethane ultra-thin mesh belt, and the belt thickness of the matching mesh belt is 6mm to 1.2mm and the mesh diameter is 0.8mm to 1.5mm.

[0033] As an optional scheme, the circulating air chamber of the present invention is respectively connected to the top plate and the bottom plate of the closed air-drying box, and vents are evenly distributed in the connecting area; temperature sensors are provided on the top and the bottom of the closed air-drying box, and the bottom temperature of the closed air-drying box is 50°C to 60°C.

[0034] As an optional solution, the air volume of the induced draft fan of the present invention is 5000m 3 / h~6000m 3 / h.

[0035] As an optional solution, the air-drying time of the antibiotic bacterial residue from the feeding mechanism to the discharging mechanism to the residue collecting mechanism of the present invention is 50 minutes to 90 minutes.

[0036] As an optional solution, the air conditioning refrigeration assembly of the present invention comprises an evaporator, a compressor, a condenser and a throttle valve which are connected in a circular manner through a pipeline, the evaporator is located in the vertical section of the circulating air chamber, the condenser is located in the horizontal section at the bottom of the circulating air chamber, and the air discharged by the induced draft fan passes through the evaporator and the condenser in sequence. As an optional solution, the bottom of the circulating air chamber between the evaporator and the condenser of the present invention is provided with an inclined surface facing the evaporator, and a condensate discharge pipe is provided at the bottom of the inclined surface.

[0037] The reduction equipment provided by the present invention is used to process antibiotic bacterial residues. The hot air drying process is fully enclosed, no waste gas is discharged, the reduction process does not change the chemical properties of the bacterial residues, and no secondary pollution is generated. The amount of bacterial residues after air drying is small, and it is easy to package, store, transport and subsequently further harmlessly incinerate and dispose of in a standardized manner, which is beneficial to protecting the ecological environment and human health and meets strict environmental protection control requirements.

[0038] like Figure 1 to Figure 2 As shown, an embodiment of the present invention provides a reduction device for reducing antibiotic bacterial residue, including a closed air drying box 3, a conveyor mesh belt 4, a circulating air chamber 5 and an air conditioning refrigeration component. The outer side of the closed air drying box 3 is sealed with a circulating air chamber 5, and a draft fan 8 and an evaporator 12 and a condenser 13 of the air conditioning refrigeration component are arranged in sequence in the circulating air chamber 5. The closed air drying box 3 is provided with an air outlet 6 and an air inlet 7, the air outlet 6 is connected to the draft fan 8, and the air inlet 7 is connected to the air outlet 6 of the circulating air chamber 5. A conveyor mesh belt 4 is arranged in the closed air drying box 3, and the conveyor mesh belt 4 is used to carry antibiotic bacterial residue. The initial end of the conveyor mesh belt 4 receives the feeding mechanism, and the end receives the slag collecting mechanism 2. The air inlet 7 enters low-temperature hot air, and the initial antibiotic bacterial residue particle forming material can be air-dried to a moisture content of 10% to 28%, and the discharged material is packaged and metered for storage.

[0039] As an optional solution, the feeding mechanism in this embodiment is a strip granulator 1, which is used to make the antibiotic bacteria residue after squeezing out water into a slag pill or slag block with a maximum size of 3mm to 5mm, and the material thickness is 12mm to 20mm. In this embodiment, the initial granular forming material of the strip granulator 1 is a strip columnar forming material with a diameter of 3mm to 5mm, and then cut into 3mm to 5mm transverse sections. The wet filter cake of the bacteria residue is granulated and formed, which is conducive to uniform heating of the bacteria residue, sufficient air drying, saving air drying energy consumption, and improving the reduction effect. After air drying, the granular forming material has low moisture and is granular, which is also convenient for standardized incineration and disposal in the later stage. Specifically, the antibiotic bacteria residue to be treated is first collected into a collection tank, which helps to prevent the bacteria residue from scattering and causing secondary pollution of odor before treatment. The bacteria residue is pushed to the strip granulator 1 for granulation and forming by a hydraulic double-screw method. The viscous material is easily and smoothly fed into the strip granulator 1 through a hydraulic device in conjunction with double-screw conveying to obtain the initial granular forming material. In the present embodiment, the initial moisture content of the mushroom residue can be 50% to 60%. If the initial moisture content of the mushroom residue is controlled too high, it will lead to the inability to granulate or the granulation will re-stick into blocks after forming, affecting the reduction effect. If the moisture content is controlled too low, more fine powder will be produced during the granulation and air-drying process, affecting the reduction effect and equipment maintenance. Moreover, the large amount of powder after air-drying is not conducive to further harmless incineration and standardized disposal in the later stage. The moisture content of the mushroom residue after air-drying is preferably 15% to 21%, and more preferably 18% to 21%.

[0040] As an optional solution, in this embodiment, the closed air drying box 3, the circulating air chamber 5 and the air conditioning refrigeration assembly are arranged in series in several groups according to the moisture content of the antibiotic bacterial residue, and the side walls of the closed air drying boxes 3 of two adjacent groups are fitted and provided with a flow opening for the conveyor mesh belt 4. In this embodiment, the closed air drying box 3 can be a group of independent box-type split module components, each module component is equipped with an independent induced draft fan 8, compressor 14, evaporator 12 and condenser 13, and then a conveyor mesh belt 4 of corresponding length is arranged at the side opening of the closed air drying box 3 for use; the independent box-type split module components can be combined in series to form a row of air drying boxes, and the number of groups can be determined according to the air drying time and air drying effect to determine the optimal number of groups, which can meet the optimal reduction efficiency without excessive air drying causing energy waste, greatly reduce the amount of bacterial residue and achieve the best economic benefits; in addition, the design of the split module component is conducive to single-unit maintenance in the event of a fault, without affecting the operation, which helps to ensure the reduction rate and further reduce the operating cost and maintenance cost.

[0041] As an optional solution, the conveyor mesh belt 4 in this embodiment includes an upper conveyor belt and a lower conveyor belt arranged in parallel. One end of the upper conveyor belt receives the feeding mechanism through the feeding port 10, one end of the lower conveyor belt receives the end of the upper conveyor belt and the other end falls into the discharging port 11, the slag collection mechanism 2 receives the discharging port 11, and the feeding port 10 and the discharging port 11 are located in the same closed air drying box 3.

[0042] As an optional solution, the upper conveyor belt and the lower conveyor belt in this embodiment are both double-layer S-shaped staggered SS304 stainless steel spring mesh belts, which can realize automatic material transmission and discharge. The mesh diameter of the stainless steel spring mesh belt is 1mm~2mm, which is convenient for the low-temperature circulating hot air circulating from the bottom of the box to dry the formed materials on the mesh belt at low temperature during the transmission process. The SS304 stainless steel material is easy to adapt to the strong acidic fungus residue materials, the S-shaped arrangement is flexible, and has good plasticity and ductility during the transmission process; the stainless steel spring mesh belt and the polyurethane ultra-thin mesh belt can be used for the air drying of the strong acidic fungus residue to increase the service life of the equipment; the mesh belt is a conveying mesh belt 4, which is convenient for the continuous feeding and air drying of the initial particle forming material and the continuous discharge of the material after air drying; the initial particle forming material is spread flat on the mesh belt, and the mesh belt is limited. The material thickness is conducive to the penetration of circulating hot air and the air drying of the material on the net.

[0043] As an optional solution, in this embodiment, a matching mesh belt 9 is arranged below the upper conveyor belt, and the matching mesh belt 9 is inclined toward the blanking end of the upper conveyor belt. The matching mesh belt 9 is a polyurethane ultra-thin mesh belt, and the thickness of the matching mesh belt 9 is 6mm to 1.2mm, and the mesh diameter is 0.8mm to 1.5mm. Figure 1 The middle supporting mesh belt 9 is inclined 25° to 40°, preferably about 30°, toward the blanking end (lower right) of the upper conveyor belt. The supporting mesh belt 9 can be installed on the closed air-drying box 3 through two support rods, so that the fine particles scattered on the supporting mesh belt 9 during the operation of the upper conveyor belt can slide to the lower conveyor belt and be taken away under the blowing of hot air, which is beneficial to the cleaning and maintenance of the equipment and improves the equipment utilization rate and air-drying efficiency.

[0044] As an optional solution, in this embodiment, the circulating air chamber 5 is connected to the top plate and the bottom plate of the closed air drying box 3 respectively, and vents are evenly distributed in the connecting area; the top and the bottom of the closed air drying box 3 are provided with temperature sensors 17, and the bottom temperature of the closed air drying box 3 is 50°C to 60°C, preferably 56°C. In this embodiment, the circulating hot air uses the inherent air source in the box, the air is heated by the compressor 14, and the hot air is circulated and transported in the box by the induced draft fan 8. The circulating hot air passes through the mesh belt from bottom to top to dry the molding material at low temperature. The moisture generated during the air drying process is condensed into condensed water by the condenser 13 and then discharged into the sewage treatment system, so as to achieve the purpose of dehydration and weight reduction.

[0045] As an optional solution, the air volume of the induced draft fan 8 in this embodiment is 5000m 3 / h~6000m 3 / h, preferably 5500m 3 / h, the air-drying time of the antibiotic bacteria residue from the feeding mechanism to the discharging to the residue collecting mechanism 2 is 50min to 90min, preferably 60min, to ensure economic benefits.

[0046] As an optional solution, the air conditioning refrigeration component in this embodiment includes an evaporator 12, a compressor 14, a condenser 13 and a throttle valve 15 which are connected in a circular manner through pipelines. The evaporator 12 is located in the vertical section of the circulating air chamber 5, and the condenser 13 is located in the horizontal section at the bottom of the circulating air chamber 5. The air outlet of the induced draft fan 8 passes through the evaporator 12 and the condenser 13 in sequence.

[0047] As an optional solution, in this embodiment, a slope 18 facing the evaporator 12 is provided at the bottom of the circulating air chamber 5 between the evaporator 12 and the condenser 13, and a condensate discharge pipe 16 is provided at the bottom of the slope 18. The moisture generated during the air drying process is condensed into condensate by the condenser 13 and then discharged into the sewage treatment system.

[0048] In this embodiment, a closed air-drying box 3 is used to perform low-temperature circulating air-drying and weight reduction using an air-conditioning system, which can reduce the moisture content of the mushroom residue to 10% to 28%, with a reduction rate of up to 53%, thereby solving the related problems caused by incineration treatment; and the air-drying process is completely closed, with no exhaust gas discharged, the weight reduction process does not change the chemical properties of the mushroom residue, and no secondary pollution is generated, thereby meeting strict environmental protection control requirements.

[0049] The method for reducing antibiotic residue provided by the present embodiment adopts a closed box-type air-drying box for low-temperature circulating hot air drying, which is composed of a series combination of independent box-type split module components. Each module component is equipped with an independent induced draft fan 8, a compressor 14, an evaporator 12 and a condenser 13, and then equipped with a conveyor mesh belt 4 of corresponding length. The compressor 14 and the induced draft fan 8 are used to generate low-temperature circulating hot air to dry the forming material. The moisture generated during the drying process is condensed into condensed water by the condenser 13 and then discharged to the sewage treatment system; the number of independent box-type split module components in the array can be determined according to the drying time and the drying effect to determine the optimal number of groups, and then a conveyor mesh belt 4 of corresponding length is configured to complete the low-temperature reduction and achieve the expected optimal economic effect; if a split module fails, it can be repaired individually without affecting the operation, which helps to ensure The reduction rate and further reduce the operation and maintenance costs; low-temperature circulating hot air drying, the air-drying process is fully enclosed, the air-drying efficiency is high, the energy consumption is low, the moisture content of the mushroom residue after air-drying is greatly reduced, and the reduction rate is as high as 53%; the air-drying process is fully enclosed and there is no exhaust gas discharge, low-temperature drying does not change the chemical properties of the material, and no secondary pollution is generated, which meets the strict environmental protection control requirements; the amount of mushroom residue after air-drying is small, easy to package, store, transport and further harmless incineration and standardized disposal, which is beneficial to protect the ecological environment and human health; the company's third-party incineration disposal costs are directly reduced by up to 50%, greatly reducing the company's waste mushroom residue management costs; the granular molding material after air-drying has low moisture and high calorific value, and no fuel auxiliary materials need to be added during incineration, and the granular shape is also convenient for later standardized incineration disposal, which greatly reduces the incineration operation and energy consumption costs, and the economic benefits are considerable.

[0050] The technical solutions in the present invention will be described clearly and completely below in conjunction with the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0051] Example 1

[0052] 1) Extruding and granulating the antibiotic bacterial residue with a moisture content of 55% through a granulator to obtain an initial granule forming material, wherein the granulation particle size of the initial granule forming material is 3.0 mm;

[0053] 2) The granular forming material is naturally fed and spread onto the slowly moving SS304 stainless steel conveyor mesh belt in the closed box, so that the spreading thickness of the granular forming material is 12.0 mm to 20.0 mm; the forming material on the mesh belt is air-dried by heating the air in the box with a compressor and circulating the hot air in the box with an induced draft fan. The moisture generated during the air-drying process is condensed into condensed water by a condenser and then discharged and collected into the sewage treatment system for centralized treatment. The circulating hot air temperature is 52°C and the air volume is 5000m 3 / h, the air-drying residence time of the forming material is 50min, and the discharged material is packaged and measured for storage.

[0054] Example 2

[0055] The same batch of antibiotic residues was used as in Example 1, with the only difference being that the air-drying residence time of the molding material was 80 min.

[0056] Example 3

[0057] The same batch of antibiotic residues was used as in Example 1, with the only difference being that the air-drying residence time of the molding material was 160 min.

[0058] Example 4

[0059] The same batch of antibiotic residues was used as in Example 1, with the only difference being that the air-drying residence time of the molding material was 240 min.

[0060] Comparative Example 1

[0061] The same batch of antibiotic residues was used as in Example 1, with the only difference being that the antibiotic residues spread on the SS304 stainless steel conveyor mesh belt were not air-dried.

[0062] Test Example 1

[0063] After the treatment of Examples 1 to 4 and Comparative Example 1, the moisture content and amount of the fungus residue (constant weight) were measured, and the reduction rate and treatment cost were calculated. The results are shown in Table 1.

[0064] Table 1 Test results of relevant indicators after treatment of antibiotic residues in Examples 1 to 4 and Comparative Example 1

[0065]

[0066] Note: The air-drying cost is 160 yuan / 60 minutes, and the incineration cost is 2,000 yuan / ton.

[0067] According to Table 1, the moisture content of antibiotic residue with a moisture content of 55% is 21% after being treated in Example 1, which is reduced by 62% and the reduction rate is 43%; the moisture content after being treated in Example 2 is 17%, which is reduced by 69% and the reduction rate is 46%; the moisture content after being treated in Example 3 is 7.5%, which is reduced by 86% and the reduction rate is 51%; the moisture content after being treated in Example 4 is 5.9%, which is reduced by 89% and the reduction rate is 52%. Under the condition that the initial forming material, hot air temperature and air volume are consistent, the longer the air drying time, the lower the moisture content after air drying. However, after air drying to a certain extent, the air drying cost increases rapidly, while the cost for direct incineration decreases slowly. Considering the air drying cost and the incineration cost comprehensively, a balance point is found between them, so as not to waste energy due to excessive air drying, greatly reduce the amount of residue and achieve the best economic benefits.

[0068] Example 5

[0069] 1) Extruding and granulating wet mushroom residue with a moisture content of 49% through a granulator to obtain an initial granule forming material, wherein the granulation particle size of the initial granule forming material is 3.0 mm;

[0070] 2) The granular forming material is naturally fed and spread onto the slowly moving SS304 stainless steel conveyor mesh belt in the closed box, so that the spreading thickness of the granular forming material is 12.0 mm to 20.0 mm; the forming material on the mesh belt is air-dried by heating the air in the box with a compressor and circulating the hot air in the box with an induced draft fan. The moisture generated during the air-drying process is condensed into condensed water by a condenser and then discharged and collected into the sewage treatment system for centralized treatment. The circulating hot air temperature is 58°C and the air volume is 5500m 3 / h, the air-drying residence time of the forming material is 120min, and the material is packed and weighed for storage. The moisture content of the mushroom residue after air drying is 10%, and the reduction rate is 45%.

[0071] Example 6

[0072] 1) Pushing the wet mushroom residue with a moisture content of 58% to a granulator through a hydraulic double screw conveyor for extrusion granulation to obtain an initial granule forming material, wherein the granulation particle size of the initial granule forming material is 3.0 mm;

[0073] 2) The granular forming material is naturally fed and spread onto the slowly moving SS304 stainless steel conveyor mesh belt in the closed box, so that the spreading thickness of the granular forming material is 12.0 mm to 20.0 mm; the forming material on the mesh belt is air-dried by heating the air in the box with a compressor and circulating the hot air in the box with an induced draft fan. The moisture generated during the air-drying process is condensed into condensed water by a condenser and then discharged and collected into the sewage treatment system for centralized treatment. The circulating hot air temperature is 58°C and the air volume is 5500m 3 / h, the air-drying residence time of the forming material is 60min, and the material is packed and weighed for storage. The moisture content of the mushroom residue after air drying is 15%, and the reduction rate is 51%.

[0074] Example 7

[0075] 1) Extruding and granulating wet mushroom residue with a moisture content of 60% into an initial granule-forming material by a granulator, wherein the granulation particle size of the initial granule-forming material is 5.0 mm;

[0076] 2) The granular forming material is naturally fed and spread onto the slowly moving SS304 stainless steel conveyor mesh belt in the closed box, so that the spreading thickness of the granular forming material is 12.0 mm to 20.0 mm; the forming material on the mesh belt is air-dried by heating the air in the box with a compressor and circulating the hot air in the box with an induced draft fan. The moisture generated during the air-drying process is condensed into condensed water by a condenser and then discharged and collected into the sewage treatment system for centralized treatment. The circulating hot air temperature is 52°C and the air volume is 5000m 3 / h, the air-drying residence time of the forming material is 50min, the discharged material is packaged and measured for storage, the moisture content of the mushroom residue after air-drying is 28%, and the reduction rate is 44%.

[0077] Example 8

[0078] 1) Extruding and granulating wet mushroom residue with a moisture content of 60% into an initial granule-forming material by a granulator, wherein the granulation particle size of the initial granule-forming material is 3.0 mm;

[0079] 2) The particle forming material is naturally fed and spread onto the SS304 stainless steel conveyor mesh belt that moves slowly in the closed box, so that the thickness of the particle forming material is 12.0mm-20.0mm; a matching mesh belt is laid in parallel under the SS304 stainless steel mesh belt. The matching mesh belt is a polyurethane ultra-thin mesh belt with a thickness of 1.0mm and an aperture of 1.0mm. It is used to collect the fine particles of mushroom residue scattered during the movement of the upper mesh belt, which is beneficial to the cleaning and maintenance of the equipment and improves the equipment utilization rate and air drying efficiency; the forming material on the mesh belt is air-dried by heating the air in the box with a compressor and circulating the hot air in the box with an induced draft fan. The moisture generated during the air drying process is condensed into condensed water by a condenser and then discharged and collected in the sewage treatment system for centralized treatment. The circulating hot air temperature is 54°C and the air volume is 6000m 3 / h, the air-drying residence time of the forming material is 90min, the discharged material is packaged and measured for storage, the moisture content of the mushroom residue after air-drying is 15%, and the reduction rate is 53%.

[0080] It can be seen from the above content that the method provided by the present invention has high efficiency in reducing the amount of antibiotic bacterial residue and can dry the antibiotic bacterial residue to a moisture content of 10% to 28%.

[0081] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A method for reducing antibiotic bacterial residue, characterized in that: The following steps are involved: The granular antibiotic residue is dried to a moisture content of 10% to 28% by hot air drying; the hot air drying temperature is 52°C to 58°C.

2. The method according to claim 1, characterized in that: The temperature of the hot air drying is 54°C to 56°C.

3. The method according to claim 1, characterized in that The hot air drying time is 50 to 120 minutes.

4. The method according to claim 1, characterized in that: The air volume of the hot air drying is 5000m 3 / h~6000m 3 / h.

5. The method according to claim 1, characterized in that The initial moisture content of the antibiotic bacterial residue is 40% to 65%.

6. The method according to claim 1, characterized in that The granular antibiotic bacterial residue is dried to a moisture content of 15% to 21%.

7. The method according to claim 1, characterized in that The diameter of the granular antibiotic bacterial residue is 3.0 mm to 5.0 mm.

8. The method according to claim 1, characterized in that The paving thickness of the granular antibiotic residue is 12.0 mm to 20.0 mm.

9. The method according to any one of claims 1 to 8, characterized in that: The hot air drying uses a reduction device; the reduction device includes a closed air drying box, a conveyor mesh belt, a circulating air chamber and an air conditioning and refrigeration component. A circulating air chamber is sealed on the outer side of the closed air drying box, and a draft fan and an evaporator and a condenser of the air conditioning and refrigeration component are sequentially arranged in the circulating air chamber. An air outlet and an air inlet are arranged on the closed air drying box, the air outlet is connected to the draft fan, and the air inlet is connected to the air outlet of the circulating air chamber. The closed air drying box is provided with the conveyor mesh belt, and the conveyor mesh belt is used to carry the granular antibiotic bacterial residue. The initial end of the conveyor mesh belt receives the feeding mechanism, and the end receives the slag collecting mechanism.

10. A reduction device for reducing antibiotic bacterial residue, characterized in that: The equipment includes a closed air drying box, a conveyor mesh belt, a circulating air chamber and an air conditioning and refrigeration component. A circulating air chamber is sealed on the outer side of the closed air drying box. An induced draft fan and an evaporator and a condenser of the air conditioning and refrigeration component are arranged in sequence in the circulating air chamber. An air outlet and an air inlet are arranged on the closed air drying box. The air outlet is connected to the induced draft fan, and the air inlet is connected to the air outlet of the circulating air chamber. The conveyor mesh belt is arranged in the closed air drying box. The conveyor mesh belt is used to carry antibiotic bacterial residue. The initial end of the conveyor mesh belt receives the feeding mechanism, and the end receives the residue collecting mechanism.

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