Method for degrading breeding manure antibiotics and synchronously preparing artificial soil by using coal gasification slag co-compost

Abstract

The invention discloses a method for degrading breeding manure antibiotics and synchronously preparing artificial soil by using coal gasification slag co-compost, and relates to a method for preparing artificial soil by using coal gasification slag co-compost. The invention aims to solve the technical problems of low utilization rate of existing coal gasification slag and residual antibiotics in livestock manure. According to the method, the coal gasification slag is added once during composting, the coal gasification slag is added once again after composting is completed, the artificial soil is prepared through mixing, the coal gasification slag is added in a large proportion by adding the coal gasification slag step by step, the composting temperature is increased, degradation of antibiotics is facilitated, and effective utilization of industrial waste is achieved; the chicken manure and the coal gasification slag are jointly fermented to prepare the artificial soil, so that a large amount of coal gasification slag can be consumed, the waste utilization rate is increased, the artificial soil which is stable in performance and capable of keeping an excellent application effect is prepared, and the problem of soil shortage in China is solved.

Description

Technical Field

[0001] The invention relates to a method for preparing artificial soil by using coal gasification slag co-composting. Background Art

[0002] At present, my country is facing soil problems: on the one hand, the population explosion has led to an increase in food demand, and the rapid development of urbanization and industrialization has led to the occupation of arable land; on the other hand, land degradation, frequent soil erosion, pollution and salinization have led to a reduction in high-quality soil. Artificial soil can improve land quality, contribute to the sustainable use of land, and help solve my country's current problems. Therefore, the preparation of artificial soil is particularly important.

[0003] Artificial soil is produced as a substitute for topsoil. It is a mixture of organic waste (such as green waste, bark, sawdust and feces, etc.) and inorganic materials (such as sand, gasified slag or coal gangue, etc.). Livestock manure is one of the important organic raw materials for preparing artificial soil. Using livestock manure to prepare organic fertilizer is not only a way to recycle waste resources, but also an important way to avoid or reduce environmental pollution. At present, most government departments in major breeding bases are promoting the production of organic fertilizer to reduce environmental pollution and increase the fertility of organic fertilizer. However, there is a phenomenon of abuse of antibiotics in the process of livestock feeding, and antibiotics have many hazards after entering the soil. First, antibiotics will change the structure of soil microbial communities, inhibit the growth and reproduction of some beneficial microorganisms, disrupt the original ecological balance, affect soil nutrient circulation, and reduce soil fertility; secondly, residual antibiotics may be absorbed by plants. Although they may not cause obvious changes in the appearance of plants, they will accumulate in the plants and be transmitted through the food chain, ultimately threatening human health; thirdly, long-term residues of antibiotics in the soil will enhance the drug resistance of bacteria in the soil. These resistant bacteria flow into surrounding environments such as water bodies, further expanding the scope of pollution and bringing continuous pressure to the ecosystem.

[0004] China is the world's largest coal gasification market. The amount of coal used in gasifiers has reached 250 million tons, resulting in a large amount of coal gasification slag, with an annual production of more than 33 million tons of coal gasification slag. At present, the main uses of coal gasification slag include structural backfill, roadbed filling, use as building materials, extraction of hollow microspheres, preparation of molecular sieves, and extraction of rare metals from them. The utilization method is relatively simple and the effective treatment degree is not high. The current treatment methods of coal gasification slag are mainly storage and landfill. The accumulated coal gasification slag will not only occupy land, but also have an adverse impact on the local ecological environment. As one of the important inorganic raw materials for preparing artificial soil, coal gasification slag has an excellent pore structure, which can realize the adsorption and removal of pollutants, and can accelerate the composting process, promote composting maturity, and reduce the toxicity of compost products; the porous structure of coal gasification slag can not only promote the transfer of substances such as oxygen, water, and nutrients, increase the space between microorganisms, but also increase the activity of microorganisms and promote the reproduction of microbial communities. Summary of the invention

[0005] The present invention aims to solve the technical problems of low utilization rate of existing coal gasification slag and residual antibiotics in livestock excrement, and provides a method for using coal gasification slag to compost and degrade antibiotics in livestock excrement and simultaneously prepare artificial soil.

[0006] The method of using coal gasification slag to compost and degrade antibiotics from livestock manure and simultaneously prepare artificial soil is carried out according to the following steps:

[0007] 1. Allow the coarse coal gasification slag and the fine coal gasification slag to stand and air dry until the moisture content is 5% to 30%, and then mix the coarse coal gasification slag and the fine coal gasification slag to obtain compound coal gasification slag;

[0008] Allow corn stalks and sawdust to air dry until the moisture content is 5% to 20%;

[0009] Then, a mixture of one or both of corn stalks and sawdust is compounded and mixed with compounded coal gasification slag in a compounding ratio of (1-15):(1-20):(3-9) to obtain a mixture;

[0010] 2. Mix fresh chicken manure with the mixture of step one, and evenly mix them in a hydraulic coupling ribbon mixer for 10min to 30min to obtain a fermentation raw material; the mass ratio of the fresh chicken manure to the mixture of step one is (1 to 3): (4 to 6); add a pH regulator, a fermentation agent and brown sugar water to the fermentation raw material, adjust the pH to 6 to 9, and control the C / N ratio to (20 to 30): 1; then put it into a compost fermentation reaction device, stir for 10min to 15min, the fermentation temperature is 25°C to 80°C, and during fermentation, water is added to ensure that the moisture content of the material is 40% to 60%, oxygen is introduced once a week for 20h to 24h and stirred for 10min to 15min to ensure that the material is fermented under sufficient oxygen; when the pile temperature reaches 50°C, the pile is stirred and turned to cool down, and the fermentation days are 30 days to 45 days;

[0011] 3. Add the composite coal gasification slag described in step 1 again, the amount of which is 10% to 80% of the mass of the fermentation raw material in step 2, stir for 10 to 15 minutes, and then naturally age for 10 to 15 days to obtain artificial soil.

[0012] The present invention adds coal gasification slag again at the end stage of compost fermentation for mixed aging (step three), which can not only adjust the texture of the compost, prevent the compost from being over-compacted, and maintain good air permeability and loose structure, but also absorb excess nutrients in the compost to play a slow-release role, and prevent the nutrients from being lost quickly during later use; further stabilize the structure and chemical properties of the compost in the aging stage; in the subsequent maturation process, the active ingredients of the coal gasification slag and the residual organic acids, humus, etc. in the compost undergo a series of complex chemical changes, which not only stabilize the physical and chemical properties of the compost, but also give rise to new substances with stronger chelating ability, which can effectively absorb heavy metal ions in the soil and reduce their toxicity to plant roots; moreover, the synergistic effect of the coal gasification slag and the new substances strengthens the water and fertilizer retention characteristics of the compost, allowing the soil to retain more water to nourish crops during droughts, and prevent nutrient loss during rainy seasons, thereby comprehensively ensuring the sustainable productivity of the soil.

[0013] Coal gasification coarse slag: The particle size is relatively large, ranging from 1.2mm to 4.75mm, in block or granular form, with a relatively rough surface and may have some irregular shapes and textures.

[0014] Coal gasification fine slag: The particle size is less than 1.2mm, usually in powder or fine granular form, with a relatively fine texture and may be closer to dust in appearance.

[0015] Coal gasification slag can also adsorb antibiotics, and microorganisms will also degrade antibiotics during the composting process.

[0016] Brown sugar water serves as a supplementary carbon source and promotes beneficial bacteria to secrete large amounts of organic acids, small molecule peptides, oligosaccharides, antibiotics, etc.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] (1) The method for obtaining coal gasification slag in the present invention is simple, the raw materials are abundant, and the time and economic costs are small;

[0019] (2) The carbon content of coal gasification slag is high, which is conducive to absorbing sunlight. The addition of coal gasification slag is conducive to increasing the temperature during the composting process;

[0020] (3) The main components of corn stalks and sawdust are cellulose, hemicellulose and lignin, which are carbon-rich organic compounds and high-quality carbon sources. They can adjust the carbon-nitrogen ratio of compost raw materials, provide energy for microbial activities and build cell substances. Their loose texture can increase the air permeability of compost, allowing oxygen to enter the interior and ensure aerobic decomposition of microorganisms. They can also regulate humidity to avoid excessive or insufficient water that affects microbial metabolism.

[0021] (4) The composting process effectively utilizes the large amount of nitrogen, phosphorus, potassium and other elements in chicken manure, promoting the utilization of organic waste;

[0022] (5) Adding coal gasification slag once during composting, and adding coal gasification slag again after composting is completed to prepare artificial soil. This step-by-step addition of coal gasification slag achieves a large proportion of coal gasification slag, which not only increases the composting temperature, is beneficial to the degradation of antibiotics, but also realizes the effective utilization of inorganic waste;

[0023] (6) The large proportion of coal gasification slag added in the present invention improves the pore structure of the compost, which is beneficial to promote the transfer of substances such as oxygen, water, and nutrients, expands the living space of microorganisms, improves the activity of microorganisms, and simultaneously degrades antibiotics. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the composting fermentation reaction device described in the seventh specific implementation mode;

[0025] Figure 2 This is the SEM image of the crude slag from coal gasification in step 1 of experiment 1;

[0026] Figure 3 This is the SEM image of coal gasification fine slag in step 1 of experiment 1. DETAILED DESCRIPTION

[0027] Specific implementation method 1: This implementation method is a method for using coal gasification slag to co-compost and degrade antibiotics in livestock manure and simultaneously prepare artificial soil, which is specifically carried out in the following steps:

[0028] 1. Allow the coarse coal gasification slag and the fine coal gasification slag to stand and air dry until the moisture content is 5% to 30%, and then mix the coarse coal gasification slag and the fine coal gasification slag to obtain compound coal gasification slag;

[0029] Allow corn stalks and sawdust to air dry until the moisture content is 5% to 20%;

[0030] Then, a mixture of one or both of corn stalks and sawdust is compounded and mixed with compounded coal gasification slag in a compounding ratio of (1-15):(1-20):(3-9) to obtain a mixture;

[0031] 2. Mix fresh chicken manure with the mixture of step one, and evenly mix them in a hydraulic coupling ribbon mixer for 10min to 30min to obtain a fermentation raw material; the mass ratio of the fresh chicken manure to the mixture of step one is (1 to 3): (4 to 6); add a pH regulator, a fermentation agent and brown sugar water to the fermentation raw material, adjust the pH to 6 to 9, and control the C / N ratio to (20 to 30): 1; then put it into a compost fermentation reaction device, stir for 10min to 15min, the fermentation temperature is 25°C to 80°C, and during fermentation, water is added to ensure that the moisture content of the material is 40% to 60%, oxygen is introduced once a week for 20h to 24h and stirred for 10min to 15min to ensure that the material is fermented under sufficient oxygen; when the pile temperature reaches 50°C, the pile is stirred and turned to cool down, and the fermentation days are 30 days to 45 days;

[0032] 3. Add the composite coal gasification slag described in step 1 again, the amount of which is 10% to 80% of the mass of the fermentation raw material in step 2, stir for 10 to 15 minutes, and then naturally age for 10 to 15 days to obtain artificial soil.

[0033] Specific implementation method 2: This implementation method is different from the specific implementation method 1 in that the particle sizes of the coarse coal gasification slag and the fine coal gasification slag described in step 1 are both 10 mesh to 100 mesh. The rest is the same as the specific implementation method 1.

[0034] Specific implementation method 3: This implementation method is different from specific implementation method 1 or 2 in that the particle sizes of corn stalks and sawdust described in step 1 are both 10-100 meshes. Other aspects are the same as specific implementation method 1 or 2.

[0035] Specific embodiment 4: This embodiment differs from Specific embodiments 1 to 3 in that the mass ratio of the coarse coal gasification slag to the fine coal gasification slag in the compounded coal gasification slag in step 1 is (1 to 10): (1 to 10). Other aspects are the same as Specific embodiments 1 to 3.

[0036] Specific embodiment 5: This embodiment is different from specific embodiment 4 in that the fermentation agent described in step 2 is a mixture of one or more of lactic acid bacteria, yeast, bacillus, EM bacteria, and protease, and the mass of the fermentation agent is 10% to 20% of the fermentation raw material. Others are the same as specific embodiment 4.

[0037] Specific embodiment 6: This embodiment is different from specific embodiment 5 in that the amount of brown sugar water added in step 2 is 5% to 20% of the mass of the fermentation raw material, which serves as a supplementary carbon source and promotes beneficial bacteria to secrete a large amount of organic acids, small molecule peptides, oligosaccharides, antibiotics, etc. The rest is the same as specific embodiment 5.

[0038] Specific implementation method 7: This implementation method is different from the specific implementation method 6 in that: Figure 1 As shown, the composting fermentation reaction device described in step 2 is composed of a water inlet pipe 1, a controller 2, a stirrer 3, a housing 4, a moisture detection meter 5, a moisture detection probe 6, a sprinkler 7, a sample injection tube 8, a funnel 9, a valve 10, a ventilation pipe 11, a temperature detection meter 12, a temperature sensor 13, an electromagnetic heater 14 and a fan 15;

[0039] A plurality of sample injection tubes 8 are evenly arranged on the upper part of the outer wall of the shell 4, a water inlet pipe 1 is arranged near the top of the outer wall of the shell 4, a sprinkler 7 is arranged on the top of the inner cavity of the shell 4, and the water inlet of the sprinkler 7 is connected with the water outlet of the water inlet pipe 1; a funnel 9 is arranged in the inner cavity of the shell 4 and below the sprinkler 7, and the funnel 9 is located below the outlet of the sample injection tube 8; a stirrer 3 is arranged below the funnel 9, the stirrer 3 is a cavity structure, and a plurality of air outlet holes 3-1 are evenly arranged on the side wall, a ventilation pipe 11 is arranged on the side wall of the stirrer 3, the ventilation pipe 11 is connected with the inner cavity of the stirrer 3, a fan 15 is arranged in the ventilation pipe 11, and the ventilation pipe 11 extends to the outside of the shell 4, A valve 10 is arranged on the ventilation pipe 11 and the valve 10 is arranged outside the housing 4; an electromagnetic heater 14 is arranged below the agitator 3; a moisture detection probe 6 and a temperature sensor 13 are arranged around the agitator 3, and the moisture detection probe 6 and the temperature sensor 13 are respectively connected to the moisture detection meter 5 and the temperature detection meter 12, and the moisture detection meter 5 and the temperature detection meter 12 are both arranged outside the housing 4; a controller 2 is also arranged on the outer wall of the housing 4, and the signal output end of the controller 2 is respectively connected to the electromagnetic heater 14, the fan 15 and the signal input end of the agitator 3; the internal moisture content and temperature are respectively observed through the moisture detection meter 5 and the temperature detection meter 12. The rest is the same as the specific implementation method six.

[0040] Specific embodiment eight: This embodiment differs from specific embodiment seven in that: in step two, feed from the sample feeding tube 8, and then enter the fermentation area below through the funnel 9, start the stirrer 3 to stir for 10min to 15min, the fermentation temperature is 25℃ to 80℃, add water from the water inlet pipe 1 and spray it through the sprinkler 7 to ensure that the moisture content of the material is 40% to 60%, open the valve 10 and the fan 15 to introduce oxygen once a week through the ventilation pipe 11 for 20h to 24h and start the stirrer 3 to stir for 10min to 15min to ensure that the material is fermented under sufficient oxygen; when the pile temperature reaches 50℃, stir and turn the pile to cool it down, and the fermentation days are 30 days to 45 days. Others are the same as specific embodiment seven.

[0041] The present invention is verified by the following tests:

[0042] Experiment 1: This experiment is a method for using coal gasification slag to co-compost and degrade antibiotics in livestock manure and simultaneously prepare artificial soil, which is specifically carried out in the following steps:

[0043] 1. Allow the coarse coal gasification slag and the fine coal gasification slag to stand and air dry until the moisture content is 15%; then mix the coarse coal gasification slag and the fine coal gasification slag to obtain compound coal gasification slag, wherein the mass ratio of the coarse coal gasification slag to the fine coal gasification slag is 1:1;

[0044] The particle size of the coal gasification coarse slag and the coal gasification fine slag is 80 mesh;

[0045] The corn stalks were air-dried to a moisture content of 10% and a particle size of 80 mesh;

[0046] Then, the corn stalks are compounded and mixed with the compounded coal gasification slag to obtain a mixture;

[0047] 2. Mix fresh chicken manure with the mixture of step 1, and evenly mix them in a hydraulic coupling ribbon mixer for 10 minutes to obtain a fermentation raw material; add a pH regulator, a fermentation agent and brown sugar water to the fermentation raw material, adjust the pH to 7, and control the C / N ratio to 25:1; the weight ratio of fresh chicken manure, corn stalks, fermentation agent and compounded coal gasification slag in the above raw materials is 40:40:5:15; Figure 1 As shown, feed from the sample feeding tube 8, and then enter the fermentation area below through the funnel 9, start the stirrer 3 to stir for 10 minutes, the fermentation temperature is 40°C, add water from the water inlet pipe 1 and spray it through the sprinkler 7 to ensure that the moisture content of the material is 50%, open the valve 10 and the fan 15, introduce oxygen once a week through the ventilation pipe 11 for 24 hours and start the stirrer 3 to stir for 10 minutes to ensure that the material is fermented under sufficient oxygen; when the pile temperature reaches 50°C, stir and turn the pile to cool it down, and the fermentation days are 45 days;

[0048] The fermentation bacteria in step 2 is lactic acid bacteria, and the added mass is 10% of the fermentation raw material;

[0049] 3. Add the composite coal gasification slag described in step 1 again, the amount of which is 20% of the mass of the fermentation raw material in step 2, stir for 10 minutes, and then naturally age for 10 days to obtain artificial soil;

[0050] like Figure 1 As shown, the composting fermentation reaction device described in step 2 is composed of a water inlet pipe 1, a controller 2, a stirrer 3, a housing 4, a moisture detection meter 5, a moisture detection probe 6, a sprinkler 7, a sample injection tube 8, a funnel 9, a valve 10, a ventilation pipe 11, a temperature detection meter 12, a temperature sensor 13, an electromagnetic heater 14 and a fan 15;

[0051] A plurality of sample injection tubes 8 are evenly arranged on the upper part of the outer wall of the shell 4, a water inlet pipe 1 is arranged near the top of the outer wall of the shell 4, a sprinkler 7 is arranged on the top of the inner cavity of the shell 4, and the water inlet of the sprinkler 7 is connected with the water outlet of the water inlet pipe 1; a funnel 9 is arranged in the inner cavity of the shell 4 and below the sprinkler 7, and the funnel 9 is located below the outlet of the sample injection tube 8; a stirrer 3 is arranged below the funnel 9, the stirrer 3 is a cavity structure, and a plurality of air outlet holes 3-1 are evenly arranged on the side wall, a ventilation pipe 11 is arranged on the side wall of the stirrer 3, the ventilation pipe 11 is connected with the inner cavity of the stirrer 3, a fan 15 is arranged in the ventilation pipe 11, and the ventilation pipe 11 extends to the outside of the shell 4, A valve 10 is arranged on the ventilation pipe 11 and the valve 10 is arranged outside the shell 4; an electromagnetic heater 14 is arranged below the agitator 3; a moisture detection probe 6 and a temperature sensor 13 are arranged around the agitator 3, and the moisture detection probe 6 and the temperature sensor 13 are respectively connected to the moisture detection meter 5 and the temperature detection meter 12, and the moisture detection meter 5 and the temperature detection meter 12 are both arranged outside the shell 4; a controller 2 is also arranged on the outer wall of the shell 4, and the signal output end of the controller 2 is respectively connected to the electromagnetic heater 14, the fan 15 and the signal input end of the agitator 3; the internal moisture content and temperature are respectively observed through the moisture detection meter 5 and the temperature detection meter 12.

[0052] The organic fertilizer inspection standard currently implemented in the country is NY-2012, and the basic parameters are: (1) organic matter ≥45%; (2) total content of N, P, and K ≥5%; (3) pH value is 5.5-8.5; (4) moisture ≤30%.

[0053] After testing, the technical indicators of the artificial soil prepared in Test 1 are as follows: (1) organic matter: 49.5%; (2) total content of N, P, and K: 6.6%; (3) pH value: 7.8; (4) moisture: 25%; (5) degradation rate of antibiotics: 80%; (6) planting germination index: 70%. All indicators meet the national organic fertilizer inspection standard NY-2012 currently implemented.

[0054] Figure 2 This is the SEM image of the crude slag from coal gasification in step 1 of experiment 1. Figure 3 This is the SEM image of the coal gasification fine slag in step 1 of experiment 1. It can be seen from the figure that the coarse slag has a larger pore size and a smaller number, while the fine slag has a smaller pore size and a larger number. For coal gasification slag, the porous structure is conducive to the transfer of nutrients and increases the living space of microorganisms.

[0055] Experiment 2: This experiment is different from Experiment 1 in that: in step 1, corn stalks and sawdust are air-dried until the moisture content is 10% and the particle size is 80 mesh; then corn stalks and sawdust are compounded and mixed with compound coal gasification slag to obtain a mixture; in step 2, the weight ratio of fresh chicken manure, corn stalks, sawdust, fermentation agent and compound coal gasification slag is 20:30:30:5:15. Others are the same as Experiment 1.

[0056] After inspection, the technical indicators of the artificial soil prepared in Experiment 2 are as follows: (1) organic matter: 48.7%; (2) total content of N, P, and K: 6.8%; (3) pH value: 8.2; (4) moisture: 25%; (5) antibiotic degradation rate: 67%; (6) planting germination index: 65%. All indicators meet the national organic fertilizer inspection standard NY-2012 currently implemented.

[0057] Experiment 3: This experiment is different from Experiment 1 in that: in step 1, the sawdust is air-dried to a moisture content of 10% and a particle size of 80 mesh; then the sawdust is compounded and mixed with the compounded coal gasification slag to obtain a mixture; in step 2, the weight ratio of fresh chicken manure, sawdust, fermentation agent and compounded coal gasification slag is 40:40:5:15. The rest is the same as Experiment 1.

[0058] After testing, the technical indicators of the artificial soil prepared in Experiment 3 are as follows: (1) organic matter: 50.8%; (2) total content of N, P, and K: 7.1%; (3) pH value: 7.5; (4) moisture: 27%; (5) antibiotic degradation rate: 79%; (6) planting germination index: 86%. All indicators meet the national organic fertilizer inspection standard NY-2012 currently implemented.

Claims

1. A method for degrading antibiotics from livestock manure and preparing artificial soil by co-composting coal gasification slag, characterized in that The method for using coal gasification slag to compost and degrade antibiotics from livestock manure and simultaneously prepare artificial soil is carried out in the following steps:

1. Allow the coarse coal gasification slag and the fine coal gasification slag to stand and air dry until the moisture content is 5% to 30%, and then mix the coarse coal gasification slag and the fine coal gasification slag to obtain compound coal gasification slag; Allow corn stalks and sawdust to air dry until the moisture content is 5% to 20%; Then, a mixture of one or both of corn stalks and sawdust is compounded and mixed with compounded coal gasification slag in a compounding ratio of (1-15):(1-20):(3-9) to obtain a mixture; 2. Mix fresh chicken manure with the mixture of step one, and evenly mix them in a hydraulic coupling ribbon mixer for 10min to 30min to obtain a fermentation raw material; the mass ratio of the fresh chicken manure to the mixture of step one is (1 to 3): (4 to 6); add a pH regulator, a fermentation agent and brown sugar water to the fermentation raw material, adjust the pH to 6 to 9, and control the C / N ratio to (20 to 30): 1; then put it into a compost fermentation reaction device, stir for 10min to 15min, the fermentation temperature is 25°C to 80°C, and during fermentation, water is added to ensure that the moisture content of the material is 40% to 60%, oxygen is introduced once a week for 20h to 24h and stirred for 10min to 15min to ensure that the material is fermented under sufficient oxygen; when the pile temperature reaches 50°C, the pile is stirred and turned to cool down, and the fermentation days are 30 days to 45 days; 3. Add the composite coal gasification slag described in step 1 again, the amount of which is 10% to 80% of the mass of the fermentation raw material in step 2, stir for 10 to 15 minutes, and then naturally age for 10 to 15 days to obtain artificial soil.

2. The method of using coal gasification slag to compost and degrade antibiotics from livestock manure and simultaneously prepare artificial soil according to claim 1, characterized in that The particle sizes of the coarse coal gasification slag and the fine coal gasification slag described in step 1 are both 10 mesh to 100 mesh.

3. The method of using coal gasification slag to compost and degrade antibiotics from livestock manure and simultaneously prepare artificial soil according to claim 1, characterized in that The corn stalks and sawdust described in step 1 both have a particle size of 10 to 100 meshes.

4. The method of using coal gasification slag to compost and degrade antibiotics from livestock manure and simultaneously prepare artificial soil according to claim 1, characterized in that The mass ratio of coarse coal gasification slag to fine coal gasification slag in the composite coal gasification slag described in step one is (1-10):(1-10).

5. The method of using coal gasification slag to compost and degrade antibiotics from livestock manure and simultaneously prepare artificial soil according to claim 1, characterized in that The fermentation agent described in step 2 is a mixture of one or more of lactic acid bacteria, yeast, bacillus, EM bacteria, and protease, and the mass of the fermentation agent is 10% to 20% of the fermentation raw material.

6. The method of using coal gasification slag to compost and degrade antibiotics from livestock manure and simultaneously prepare artificial soil according to claim 1, characterized in that The amount of brown sugar water added in step 2 is 5% to 20% of the mass of the fermentation raw material.

7. The method of using coal gasification slag to compost and degrade antibiotics from livestock manure and simultaneously prepare artificial soil according to claim 1, characterized in that The composting fermentation reaction device described in step 2 is composed of a water inlet pipe 1, a controller 2, a stirrer 3, a housing 4, a moisture detection meter 5, a moisture detection probe 6, a sprinkler 7, a sample injection tube 8, a funnel 9, a valve 10, a ventilation pipe 11, a temperature detection meter 12, a temperature sensor 13, an electromagnetic heater 14 and a fan 15; A plurality of sample injection tubes 8 are evenly arranged on the upper part of the outer wall of the shell 4, a water inlet pipe 1 is arranged near the top of the outer wall of the shell 4, a sprinkler 7 is arranged on the top of the inner cavity of the shell 4, and the water inlet of the sprinkler 7 is connected with the water outlet of the water inlet pipe 1; a funnel 9 is arranged in the inner cavity of the shell 4 and below the sprinkler 7, and the funnel 9 is located below the outlet of the sample injection tube 8; a stirrer 3 is arranged below the funnel 9, the stirrer 3 is a cavity structure, and a plurality of air outlet holes 3-1 are evenly arranged on the side wall, a ventilation pipe 11 is arranged on the side wall of the stirrer 3, the ventilation pipe 11 is connected with the inner cavity of the stirrer 3, a fan 15 is arranged in the ventilation pipe 11, and the ventilation pipe 11 extends to the outside of the shell 4, A valve 10 is arranged on the ventilation pipe 11 and the valve 10 is arranged outside the shell 4; an electromagnetic heater 14 is arranged below the agitator 3; a moisture detection probe 6 and a temperature sensor 13 are arranged around the agitator 3, and the moisture detection probe 6 and the temperature sensor 13 are respectively connected to the moisture detection meter 5 and the temperature detection meter 12, and the moisture detection meter 5 and the temperature detection meter 12 are both arranged outside the shell 4; a controller 2 is also arranged on the outer wall of the shell 4, and the signal output end of the controller 2 is respectively connected to the electromagnetic heater 14, the fan 15 and the signal input end of the agitator 3; the internal moisture content and temperature are respectively observed through the moisture detection meter 5 and the temperature detection meter 12.

8. The method of using coal gasification slag to compost and degrade antibiotics from livestock manure and simultaneously prepare artificial soil according to claim 7, characterized in that In step 2, feed the material from the sample feeding tube 8, and then enter the fermentation area below through the funnel 9, start the agitator 3 and stir for 10min to 15min, the fermentation temperature is 25°C to 80°C, add water from the water inlet pipe 1 and spray it through the sprinkler 7 to ensure that the moisture content of the material is 40% to 60%, open the valve 10 and the fan 15 to introduce oxygen once a week through the ventilation pipe 11 for 20h to 24h and start the agitator 3 to stir for 10min to 15min to ensure that the material is fermented under sufficient oxygen; when the pile temperature reaches 50°C, stir and turn the pile to cool it down, and the fermentation days are 30 days to 45 days.

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