Innocent treatment method for chicken manure and fermentation equipment thereof

Abstract

The invention discloses a harmless treatment method for chicken manure and fermentation equipment thereof. The treatment method comprises the following steps: S1, preparing a zymophyte solution; and S2, collecting chicken manure generated in the broiler farm. S3, the collected chicken manure is covered with an adsorbent for deodorization. And S4, feeding the chicken manure and the adsorbent into fermentation equipment together, and adding 2 / 3 of the zymophyte liquid in a spraying manner. And S5, stirring the materials in the fermentation equipment to uniformly mix the materials, and introducing pure oxygen to carry out aerobic fermentation. S6, after pure oxygen is introduced for 4-6 hours, gas introduction is stopped, the fermentation process is transited from aerobic fermentation to anaerobic fermentation, and the fermentation time is 10-15 days. And S7, adding the rest 1 / 3 of the zymophyte liquid, and continuing anaerobic fermentation. And S8, taking out the fermented material, and uniformly mixing the fermented material with rape seed cakes to obtain the fertilizer. While the manure treatment efficiency is improved, the conversion rate of the fertilizer is improved, the harmlessness of the treated product is ensured, no gas overflows in the whole fermentation process, and the environmental protection property in the chicken manure treatment process is improved.

Description

Technical Field

[0001] The invention relates to the technical field of chicken manure treatment, in particular to a method for harmlessly treating broiler manure, and also to fermentation equipment used in the treatment method. Background Art

[0002] A large amount of manure is produced in broiler farming. These manure are discharged directly without treatment, which not only causes great pollution to water and land resources, but also causes pests and diseases to crops, and also induces various diseases transmitted by humans and animals. The fermentation treatment of broiler manure can reduce environmental pollution, reduce the spread of odor and infectious diseases, and at the same time, the treatment result is a high-quality organic fertilizer, which is rich in various nutrients, such as nitrogen, phosphorus, potassium, calcium, etc. Compared with untreated manure, fermented chicken manure fertilizer is more stable and easier to absorb and utilize, and has a significant promoting effect on crop growth and development.

[0003] Traditional composting takes up a lot of space and takes a long time. The fermentation process is uncontrollable and pollutes the environment. For example, the invention patent with application number 201811096090.3 is a new process for aerobic fermentation of chicken manure. It uses ventilation fermentation to aerobic ferment chicken manure, so that chicken manure is converted into fertilizer. When the aforementioned patent is implemented, the waste gases such as hydrogen sulfide and carbon dioxide produced by fermentation are exchanged with the environment, and the fermentation process is not environmentally friendly. Referring to the invention patent with application number 202410004590.9, the continuous chicken manure treatment device and treatment method are used to mature the manure. However, when the patent is implemented, it needs to use multiple large-scale equipment to achieve continuous treatment of chicken manure, which is costly and energy-intensive. Therefore, there is an urgent need for an improved method for harmless treatment of broiler manure. Summary of the invention

[0004] In view of the shortcomings of the prior art mentioned above, the purpose of the present invention is to provide a method for harmless treatment of broiler manure and its fermentation equipment to improve the efficiency of manure treatment, improve the conversion rate of fertilizer, ensure the harmlessness of the treatment product, and improve the environmental protection of broiler manure treatment.

[0005] A method for harmless treatment of broiler manure, comprising the following steps: S1 prepares fermentation liquid for standby use; S2 collects chicken manure produced in broiler farms; S3 uses adsorbent to cover and deodorize the collected chicken manure; S4 sends the chicken manure and the adsorbent into the fermentation equipment together, and then adds 2 / 3 of the fermentation liquid in the form of spraying; S5 stirs the materials in the fermentation equipment to make them evenly mixed, and then introduces pure oxygen for aerobic fermentation; After pure oxygen is introduced into S6 for 4-6 hours, the air supply is stopped and the fermentation process transitions from aerobic fermentation to anaerobic fermentation. The fermentation time is 10-15 days. S7 adds the remaining 1 / 3 of the fermentation liquid and continues anaerobic fermentation; S8 takes out the fermented material and mixes it evenly with the rapeseed cake to obtain fertilizer.

[0006] As a further improvement of the above scheme, the method for preparing the fermentation liquid is specifically performed as follows: S11: mixing Bacillus subtilis, lactic acid bacteria and yeast in a ratio of 1-1.5:0.5-1:0.5-1.5 to obtain fermentation bacteria; S12 adds brown sugar water to the fermentation bacteria, and mixes to obtain a fermentation solution. In the fermentation solution, the concentration of the fermentation bacteria is 15-25 g / L. In the present invention, the brown sugar water is used as a nutrient to supply the fermentation bacteria to promote their reproduction, and when mixed with feces and sewage for fermentation, it also plays a role in regulating the humidity of the material.

[0007] As a further improvement of the above scheme, the adsorbent is made of sawdust, straw or rice husk, and the amount of the adsorbent added is 8% to 15% of the chicken manure. In the present invention, the adsorbent is sprinkled on the surface of the chicken manure, and the physical adsorption effect is used to achieve the deodorization effect. In the subsequent fermentation process, the adsorbent also serves as a carbon source to supply the microbial metabolic activity of the fermentation bacteria, thereby facilitating fermentation and improving the fermentation efficiency. In addition, the adsorbent can also absorb fecal water and improve the cleanliness during the feces transfer process.

[0008] As a further improvement of the above scheme, the fermentation liquid accounts for 2% to 8% of the chicken manure, and the volume of the fermentation material in the fermentation equipment accounts for 4 / 5 of the volume of the fermentation space.

[0009] As a further improvement of the above scheme, in S5~S7, the waste gas generated during fermentation enters the purification area of ​​the fermentation equipment and is adsorbed and fixed by activated carbon. After the fermentation is completed, the activated carbon that absorbs solid waste gas is taken out from the purification area for heating treatment, and then the activated carbon is put back into the purification area for use. In the process of fermenting and decomposing broiler manure, the present invention will produce gases such as hydrogen sulfide, methane gas, carbon dioxide, etc. These gases will cause pollution when directly discharged into the air. Therefore, in this embodiment, activated carbon is used to absorb solid waste gas throughout the fermentation process, which plays a role in purification while avoiding gas overflow, improves the environmental protection of the broiler manure treatment process, and realizes harmless treatment of broiler manure. In addition, after the fermentation is completed, measures such as hot air or steam heating are used to treat the activated carbon that absorbs solid waste gas, so that the adsorbed harmful substances are desorbed, and the activated carbon can be reused, and the desorbed gas enters the spray tower for chemical absorption purification until it meets the emission standards.

[0010] As a further improvement of the above scheme, the fermented material and rapeseed cake are evenly mixed in a ratio of 1-3:0.2-0.5, and then sprinkled on the soil where the crops are located as fertilizer, and then covered with soil to achieve the reuse of broiler manure. In the present invention, rapeseed cake contains rich protein, fat and minerals, which plays an important role in improving soil structure and increasing soil fertility. The fertilizer formed by fermenting chicken manure and rapeseed cake are mixed to optimize the nutritional structure of the fertilizer, meet the nutritional needs of crops, and improve the soil environment and promote crop growth.

[0011] A fermentation device, comprising a device housing for providing a space for treating broiler manure, and a shell cover installed at the top of the device housing; the device also comprises: A fermentation liquid tank, which is fixedly mounted on the shell cover; A fermentation liquid spraying structure for delivering the fermentation liquid into the equipment housing; An oxygenation tube is fixed vertically through the shell cover; Material mixing mechanism; and An exhaust gas absorption structure, which is composed of an exhaust gas duct and a purification box filled with activated carbon blocks; Wherein, the fermentation equipment is applied to the harmless treatment method of broiler manure.

[0012] As a further improvement of the above solution, a feed inlet and a discharge port are provided on the shell, and both the feed inlet and the discharge port are movably covered with a blocking cover.

[0013] As a further improvement of the above solution, the fermentation liquid spraying structure is installed on the shell cover, and includes a water pump, a liquid guiding pipeline and a coil member located in the equipment shell.

[0014] As a further improvement of the above scheme, the liquid conduit is composed of a conduit I and a conduit II, wherein the conduit I is fixedly connected between the liquid inlet of the water pump and the liquid outlet of the fermentation liquid tank, and the conduit II is fixedly connected between the liquid outlet of the water pump and the liquid inlet of the coil. Conduit II is laid through the shell cover, and the coil and the shell cover are fixed, and a plurality of spray ports are evenly opened on the tube wall of the coil facing away from the shell cover. In the present invention, the prepared fermentation liquid is placed in the fermentation liquid tank for constant volume, thereby facilitating the proportional mixing of broiler manure and fermentation liquid, and the fermentation liquid is evenly inoculated in the broiler manure under the action of the fermentation liquid spray structure. As a further improvement of the above scheme, the material stirring mechanism includes a rotating motor fixedly installed at the center position of the shell cover, a plurality of stirring plates fixedly connected to the rotating shaft of the rotating motor, two vertical plates arranged close to the inner wall of the equipment shell, and a connecting plate for connecting the two vertical plates.

[0015] As a further improvement of the above scheme, the rotating shaft of the rotating motor vertically passes through the shell cover and extends into the equipment shell, and a number of stirring plates are staggered on the corresponding two side walls of the rotating shaft, and the stirring plates and the rotating shaft are perpendicular. Two vertical plates are symmetrically arranged at the other two side positions corresponding to the rotating shaft, and the outer walls on both sides of the vertical plates are cut to form acute angles; the number of the connecting plates is two groups, one group of connecting plates is vertically fixed between the tops of the two vertical plates, and the remaining group of connecting plates is vertically fixed between the bottoms of the two vertical plates, and the rotating shaft is vertically fixed and penetrates the vertical plates. In the present invention, the material stirring mechanism stirs the material so that the fermentation liquid and the feces are fully in contact to exert a decomposition effect. In addition, the material stirring mechanism also plays an auxiliary role when feeding.

[0016] As a further improvement of the above scheme, the oxygenation pipe is located at a side of the material stirring mechanism facing away from the fermentation liquid tank, and a one-way valve I is fixedly installed on the oxygenation pipe. In the present invention, the gas is filled into the gasification pipe, thereby increasing the concentration of dissolved oxygen in the fermentation space, so as to facilitate aerobic fermentation.

[0017] As a further improvement of the above scheme, the waste gas conduit is fixedly connected to the top of the corresponding side wall of the equipment housing, and the outlet end of the waste gas conduit is fixedly connected to the purification box, a one-way valve II is installed on the waste gas conduit, and the purification box is located at one side of the equipment housing. In the present invention, gases such as hydrogen sulfide, methane, carbon dioxide, etc. generated during the fermentation stage directly enter the waste gas absorption structure, avoiding gas overflow, making the fermentation equipment environmentally friendly during operation.

[0018] Compared with the prior art, the present invention has the following beneficial effects: The present invention adopts Bacillus subtilis + lactic acid bacteria + yeast to form a ternary composite fermentation bacteria body, which cooperates to improve the fermentation efficiency and fermentation conversion rate. In addition, the fermentation product, i.e., the fertilizer, contains the ternary composite fermentation bacteria body, which can fully exert the fertilizer effect when used and is also of great benefit to the soil.

[0019] The present invention adopts an aerobic-anaerobic synergistic treatment mode to make broiler manure and sewage completely decomposed, thereby improving the manure and sewage treatment efficiency, improving the fertilizer conversion rate, and ensuring the harmlessness of the treatment product.

[0020] The present invention absorbs solid waste gas during the whole fermentation process, purifies it and avoids gas overflow, improves the environmental protection of broiler manure treatment, and realizes harmless treatment of broiler manure. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 Shown is a schematic structural diagram of a fermentation device provided in Example 3 of the present invention.

[0022] Figure 2 The present invention is shown Figure 1 Plan perspective drawing.

[0023] Figure 3 Shown Figure 2 Bottom view of the middle shell cover.

[0024] Figure 4 Shown Figure 2 A partial top view of .

[0025] Figure 5 Shown Figure 2 Schematic diagram of the structure of the material mixing mechanism.

[0026] Main component symbols 1. Equipment shell; 2. Shell cover; 3. Fermentation liquid tank; 4. Water pump; 5. Liquid guide pipe; 6. Coil fittings; 7. Oxygenation pipe; 8. Rotating motor; 9. Stirring plate; 10. Vertical plate; 11. Connecting plate; 12. Exhaust gas duct; 13. Purification box.

[0027] The above description of the main component symbols is combined with the accompanying drawings and specific implementation methods to further illustrate the present invention in detail. DETAILED DESCRIPTION

[0028] The specific embodiments of the present invention are described in detail below with reference to the accompanying drawings. Example

[0029] The present embodiment provides a method for harmlessly treating broiler manure, which comprises the following steps: S1: Bacillus subtilis, lactic acid bacteria and yeast are mixed in a ratio of 1:1:1 to obtain fermentation bacteria, and then brown sugar water is added to the fermentation bacteria to obtain a fermentation solution for later use. The concentration of the fermentation bacteria in the fermentation solution is 20 g / L.

[0030] In this embodiment, Bacillus subtilis + lactic acid bacteria + yeast are used to form a ternary composite fermentation cell, which cooperates to improve the fermentation efficiency and fermentation conversion rate. Among them, Bacillus subtilis plays a role in decomposing organic matter, improving the nutrient utilization rate of fertilizers, and reducing the accumulation of harmful substances. Lactic acid bacteria produce organic acids such as lactic acid when fermenting feces to reduce the pH value of the fermentation product. Yeast decomposes difficult-to-degrade substances such as cellulose and lignin when fermenting feces, promotes the decomposition process, and inhibits the growth of harmful microorganisms. In addition, the fermentation product, that is, the fertilizer contains a ternary composite fermentation cell. When used, it fully exerts the fertilizer effect and is also of great benefit to the soil. For example, Bacillus subtilis can promote the growth and development of plant roots, lactic acid bacteria increase the number of beneficial microorganisms in the soil, improve the soil microecological environment, and yeast produces beneficial substances such as growth factors to promote the growth and development of plants.

[0031] S2 collects chicken manure produced in broiler farms. S3 uses sawdust to cover and deodorize the collected chicken manure, and then transfers it to the fermentation point. The amount of sawdust added accounts for 10% of the chicken manure. In this embodiment, by sprinkling sawdust on the surface of chicken manure, the deodorizing effect is achieved by physical adsorption. In the subsequent fermentation process, the sawdust also serves as a carbon source to supply the microbial metabolic activities of the fermentation bacteria, thereby facilitating fermentation and improving fermentation efficiency. The sawdust can also absorb fecal water, improving the cleanliness of the feces transfer process. S4 sends the chicken manure and sawdust together into the fermentation equipment, and then adds 2 / 3 of the fermentation liquid in the form of spraying, wherein the fermentation liquid accounts for 5% of the chicken manure, and the volume of the fermentation material in the fermentation equipment accounts for 4 / 5 of the volume of the fermentation space.

[0032] S5 stirs the materials in the fermentation equipment to make them evenly mixed, and then introduces pure oxygen into the fermentation equipment for aerobic fermentation. 3 , with 1m 3 / h of pure oxygen inlet flow rate is used as an example to illustrate that by filling pure oxygen to increase the dissolved oxygen content in the fermentation space, the fermentation time is shortened and the yield is increased.

[0033] After S6 was introduced with pure oxygen for 4 hours, the air intake was stopped and the fermentation process transitioned from aerobic fermentation to anaerobic fermentation for 15 days. During the aerobic fermentation process, the fermentation bacteria multiplied rapidly and exerted aerobic decomposition, accelerating the maturity and decomposition of the manure, and releasing heat, so that the fermented materials were heated up and parasite eggs and pathogens in the manure were killed.

[0034] S7 adds the remaining 1 / 3 of the fermentation liquid and continues anaerobic fermentation for 8 days, stirring the material every 12 hours during the fermentation. During the anaerobic fermentation process, the fermentation bacteria decompose organic matter through anaerobic respiration, fully decompose broiler manure, and produce more organic matter and trace elements.

[0035] In this embodiment, the broiler manure is completely decomposed and decomposed through the synergistic effect of aerobic and anaerobic conditions, thereby improving the manure treatment efficiency and the fertilizer conversion rate.

[0036] In S5~S7, the waste gas generated during fermentation enters the purification area of ​​the fermentation equipment and is adsorbed and fixed by the activated carbon.

[0037] After the fermentation is completed, the activated carbon that absorbs solid waste gas is taken out from the purification area for heating treatment, and then the activated carbon is put back into the purification area for use. In the process of fermenting and decomposing broiler manure, gases such as hydrogen sulfide, methane gas, and carbon dioxide will be produced. These gases will cause pollution if they are directly discharged into the air. Therefore, in this embodiment, activated carbon is used to absorb solid waste gas during the entire fermentation process, which plays a role in purification while avoiding gas overflow, thereby improving the environmental protection of the broiler manure treatment process and achieving harmless treatment of broiler manure. In addition, after the fermentation is completed, measures such as hot air or steam heating are used to treat the activated carbon that absorbs solid waste gas, so that the adsorbed harmful substances are desorbed, and the activated carbon can be reused, and the desorbed gas enters the spray tower for chemical absorption purification until it reaches the emission standard, which will not be elaborated here.

[0038] S8 takes out the fermented material from the fermentation equipment, mixes the fermented material and rapeseed cake in a ratio of 2:0.3, and then spreads it on the soil where the crops are located as fertilizer, and then covers it with soil to achieve the reuse of broiler manure. In this embodiment, rapeseed cake is rich in protein, fat and minerals, which plays an important role in improving soil structure and increasing soil fertility. The fertilizer formed by fermenting chicken manure and rapeseed cake are mixed to optimize the nutritional structure of the fertilizer, meet the nutritional needs of crops, and improve the soil environment and promote crop growth.

[0039] In summary, the treatment method of this embodiment has the following advantages: it can achieve complete composting and decomposition of broiler manure, improve the manure treatment efficiency, improve the conversion rate of fertilizer, ensure the harmlessness of the treatment product, and there is no gas overflow during the entire fermentation process, thereby improving the environmental friendliness of the broiler manure treatment process and being environmentally friendly. Example

[0040] The present embodiment provides a method for harmlessly treating broiler manure, which comprises the following steps: S1: Bacillus subtilis, lactic acid bacteria and yeast are mixed in a ratio of 1.5:1:1.5 to obtain fermentation bacteria, and then brown sugar water is added to the fermentation bacteria to obtain a fermentation solution for later use. The concentration of the fermentation bacteria in the fermentation solution is 25 g / L.

[0041] S2 collects chicken manure produced in broiler farms.

[0042] S3 uses straw shreds to cover and deodorize the collected chicken manure, and then transfers it to the fermentation point. The amount of straw shreds added accounts for 15% of the chicken manure. In this embodiment, by sprinkling straw shreds on the surface of the chicken manure, the deodorizing effect is achieved by physical adsorption. In the subsequent fermentation process, the straw shreds also serve as a carbon source to supply the microbial metabolic activities of the fermentation bacteria, thereby facilitating fermentation and improving the fermentation efficiency.

[0043] S4 sends the chicken manure and shredded straw into the fermentation equipment together, and then adds 2 / 3 of the fermentation liquid in the form of spraying, wherein the fermentation liquid accounts for 8% of the chicken manure, and the volume of the fermentation material in the fermentation equipment accounts for 4 / 5 of the volume of the fermentation space.

[0044] S5 stirs the materials in the fermentation equipment to make them evenly mixed, and then introduces pure oxygen into the fermentation equipment for aerobic fermentation. 3 , with 1.5m 3 / h of pure oxygen inlet flow rate is used as an example to illustrate that by filling pure oxygen to increase the dissolved oxygen content in the fermentation space, the fermentation time is shortened and the yield is increased.

[0045] After pure oxygen was introduced into S6 for 6 hours, the air intake was stopped and the fermentation process transitioned from aerobic fermentation to anaerobic fermentation. The fermentation time was 10 days.

[0046] S7 added the remaining 1 / 3 of the fermentation liquid and continued anaerobic fermentation for 10 days. During the fermentation period, the material was stirred every 18 hours.

[0047] S8 takes out the fermented material from the fermentation equipment, mixes the fermented material and rapeseed cake evenly in a ratio of 1~3:0.2~0.5, and spreads it on the soil where the crops are located as fertilizer, and then covers it with soil to achieve the recycling of broiler manure.

[0048] In S5-S7, the waste gas generated during fermentation enters the purification area of ​​the fermentation equipment and is adsorbed and fixed by the activated carbon. After the fermentation is completed, the activated carbon that has adsorbed the solid waste gas is taken out from the purification area and heated, and then the activated carbon is put back into the purification area for use.

[0049] By using the treatment method of Example 1, it takes 23 days from the start of fermentation to completion. By using the treatment method of Example 2, it takes 20 days from the start of fermentation to completion. Compared with the traditional anaerobic fermentation method, which takes more than 2 months, the fermentation time is significantly shortened. This proves that the treatment method of the present invention has the advantage of high efficiency. Example

[0050] See also Figure 1-5 This embodiment provides a fermentation device, which is applied to the treatment method of embodiment 1 or embodiment 2 to perform harmless processing on broiler manure and realize the reuse of broiler manure. The fermentation device includes an equipment housing 1 for providing a broiler manure treatment space, a shell cover 2 installed at the top of the equipment housing 1, a fermentation liquid tank 3 fixedly installed on the shell cover 2, a fermentation liquid spraying structure for feeding the fermentation liquid into the equipment housing 1, an oxygenation pipe 7 vertically fixedly penetrating the shell cover 2, a material stirring mechanism, and an exhaust gas absorption structure.

[0051] In order to facilitate the fertilizer truck to receive the fermented products discharged along the discharge port, the equipment housing 1 of this embodiment is raised by a steel support frame, so that the equipment housing 1 is stably placed while the discharge port is at a certain distance from the ground for discharge. The housing 1 is provided with a feed port and a discharge port, and both the feed port and the discharge port are provided with a movable cover. The collected broiler manure is transported by the conveyor belt and fed into the equipment housing 1 along the feed port, while the fermented products are discharged along the discharge port. During the fermentation process, the feed port and the discharge port are both in a closed state.

[0052] The shell cover 2 of this embodiment serves to support functional mechanisms such as the fermentation liquid tank 3 and the fermentation liquid spraying structure. In order to facilitate the cleaning of the inside of the equipment shell 1 and the maintenance of related functional mechanisms, the shell cover 2 is detachably installed. Accordingly, in order to meet the needs of anaerobic fermentation, sealing measures are arranged at the connection between the shell cover 2 and the equipment shell 1 to isolate the fermentation chamber from the external environment.

[0053] The fermentation liquid spraying structure is installed on the shell cover 2, and includes a water pump 4, a liquid guide pipe 5, and a coil member 6 located in the equipment housing 1. The liquid guide pipe 5 is composed of a conduit I and a conduit II. The conduit I is fixedly connected between the liquid inlet end of the water pump 4 and the liquid outlet of the fermentation liquid tank 3, and the conduit II is fixedly connected between the liquid outlet end of the water pump 4 and the liquid inlet of the coil member 6. The conduit II is arranged through the shell cover 2, and the coil member 6 is fixed to the shell cover 2. A plurality of spray ports are evenly opened on the tube wall of the coil member 6 facing away from the shell cover 2.

[0054] In this embodiment, the prepared fermentation liquid is placed in the fermentation liquid tank 3 for constant volume, so as to facilitate the proportional mixing of broiler manure and fermentation liquid. The fermentation liquid is evenly inoculated in the broiler manure under the action of the fermentation liquid spraying structure.

[0055] The oxygenation pipe 7 is located at a side position of the fermentation liquid tank 3 facing away from the material stirring mechanism, and a one-way valve 1 is fixedly installed on the oxygenation pipe 7. In this embodiment, the air inlet end of the oxygenation pipe 7 is connected to the air source, and the air source can be sterile air or pure oxygen. The gas is filled into the oxygenation pipe 7, thereby increasing the concentration of dissolved oxygen in the fermentation space, which is conducive to aerobic fermentation. The feces and sewage are decomposed and heat is released through aerobic fermentation, so that the fermented material is heated to kill parasite eggs and bacteria in the feces and sewage, and reduce the risk of disease and pest transmission when chicken manure is reused.

[0056] The material stirring mechanism includes a rotating motor 8 fixedly installed at the center of the shell cover 2, a plurality of stirring plates 9 fixedly connected to the rotating shaft of the rotating motor 8, two vertical plates 10 arranged close to the inner wall of the equipment shell 1, and a connecting plate 11 for connecting the two vertical plates 10.

[0057] The rotating shaft of the rotating motor 8 vertically passes through the shell cover 2 and extends into the equipment housing 1. A plurality of stirring plates 9 are staggered on the two side walls corresponding to the rotating shaft, and the stirring plates 9 are perpendicular to the rotating shaft. Two vertical plates 10 are symmetrically arranged on the other two sides corresponding to the rotating shaft, and the outer walls of the vertical plates 10 on both sides are cut to form acute angles; the number of connecting plates 11 is two groups, one of which is vertically fixed between the tops of the two vertical plates 10, and the remaining group of connecting plates 11 is vertically fixed between the bottoms of the two vertical plates 10, and the rotating shaft is vertically fixed and arranged through the vertical plates 10.

[0058] In this embodiment, the material is stirred based on the material stirring mechanism so that the fermentation liquid and feces are fully in contact to exert the decomposition effect. In addition, the material stirring mechanism also plays an auxiliary role when discharging the material, specifically: the rotating motor 8 is running, and the stirring plate 9 rotates to loosen the material to facilitate discharging. At the same time, the vertical plate 10 rotates synchronously, with the help of the acute angles on both sides of the vertical plate 10, and the vertical plate 10 is attached to the inner wall of the shell and rotates to play a scraping role, thereby improving the discharging efficiency.

[0059] The waste gas absorption structure is composed of a waste gas conduit 12 and a purification box 13 filled with activated carbon blocks; the waste gas conduit 12 is fixedly connected to the top of the corresponding side wall of the equipment housing 1, and the exhaust end of the waste gas conduit 12 is fixedly connected to the purification box 13, a one-way valve II is installed on the waste gas conduit 12, and the purification box 13 is located at one side of the equipment housing 1. In this embodiment, gases such as hydrogen sulfide, methane, carbon dioxide, etc. generated during the fermentation stage directly enter the waste gas absorption structure, avoiding gas overflow, making the fermentation equipment environmentally friendly during operation.

[0060] In addition, in order to improve the controllability of the fermentation environment during the entire fermentation process, the fermentation equipment of this embodiment may also be equipped with monitoring elements such as temperature sensors, humidity sensors, and oxygen concentration sensors (not shown) to detect the materials in the fermentation space so as to understand the current fermentation environment status and fermentation progress, which will not be elaborated here.

[0061] In summary, the fermentation equipment of this embodiment has the following advantages: in the same space, a three-stage broiler manure decomposition system of controllable aerobic fermentation, transitional fermentation and anaerobic fermentation is established, so that the fermentation bacteria can fully exert their decomposition effect, improve the fermentation efficiency and fermentation conversion rate, and the waste gas of the entire fermentation process is absorbed and purified, which is environmentally friendly.

[0062] The above embodiments are merely preferred implementations of the present invention. Any simple modification, amendment and substitution of the above embodiments based on the technical essence of the present invention shall fall within the scope of the technical solution of the present invention.

Claims

1. A method for harmless treatment of broiler manure, characterized in that: The following steps are involved: S1 prepares fermentation liquid for standby use; S2 collects chicken manure produced in broiler farms; S3 uses adsorbent to cover and deodorize the collected chicken manure; S4 sends the chicken manure and the adsorbent into the fermentation equipment together, and then adds 2 / 3 of the fermentation liquid in the form of spraying; S5 stirs the materials in the fermentation equipment to make them evenly mixed, and then introduces pure oxygen for aerobic fermentation; After pure oxygen is introduced into S6 for 4-6 hours, the air supply is stopped and the fermentation process transitions from aerobic fermentation to anaerobic fermentation. The fermentation time is 10-15 days. S7 adds the remaining 1 / 3 of the fermentation liquid and continues anaerobic fermentation; S8 takes out the fermented material and mixes it evenly with the rapeseed cake to obtain fertilizer.

2. The method for harmless treatment of broiler manure according to claim 1, characterized in that: The method for preparing the fermentation liquid is specifically performed as follows: S11: mixing Bacillus subtilis, lactic acid bacteria and yeast in a ratio of 1-1.5:0.5-1:0.5-1.5 to obtain fermentation bacteria; S12 adds brown sugar water to the fermentation bacteria, and mixes to obtain a fermentation bacterial liquid; In the fermentation solution, the concentration of the fermentation bacteria is 15-25 g / L.

3. The method for harmless treatment of broiler manure according to claim 1, characterized in that: The adsorbent is wood chips, straw chips or rice husks, and the amount of the adsorbent added accounts for 8% to 15% of the chicken manure.

4. The method for harmless treatment of broiler manure according to claim 3, characterized in that: The fermentation liquid accounts for 2% to 8% of the chicken manure, and the volume of the fermentation material in the fermentation equipment accounts for 4 / 5 of the volume of the fermentation space.

5. The method for harmless treatment of broiler manure according to claim 1, characterized in that: In S5-S7, the waste gas generated during fermentation enters the purification area of ​​the fermentation equipment and is adsorbed and fixed by the activated carbon; After the fermentation is completed, the activated carbon that absorbs the solid waste gas is taken out from the purification area and heated, and then the activated carbon is put back into the purification area for use.

6. The method for harmless treatment of broiler manure according to claim 1, characterized in that: The fermented material and rapeseed cake are evenly mixed in a ratio of 1~3:0.2~0.5, and then spread on the soil where the crops are located as fertilizer, and then covered with soil to achieve the recycling of broiler manure.

7. A fermentation device, comprising a device housing (1) for providing a space for treating broiler manure, and a housing cover (2) mounted on the top of the device housing (1); It is characterized in that The device also includes: A fermentation liquid tank (3) fixedly mounted on the shell cover (2); A fermentation liquid spraying structure for delivering the fermentation liquid into the device housing (1); An oxygenation tube (7) vertically fixed and passing through the shell cover (2); Material mixing mechanism; and An exhaust gas solid absorption structure, which is composed of an exhaust gas conduit (12) and a purification box (13) filled with activated carbon blocks; Wherein, the fermentation equipment is applied to the harmless treatment method of broiler manure as described in any one of claims 1 to 6.

8. The fermentation equipment according to claim 7, characterized in that: The shell (1) is provided with a feed inlet and a discharge port, and both the feed inlet and the discharge port are provided with movable covers; The fermentation liquid spraying structure is installed on the shell cover (2), and comprises a water pump (4), a liquid guide pipe (5) and a coil member (6) located in the equipment shell (1); The liquid guide pipe (5) is composed of a conduit I and a conduit II, wherein the conduit I is fixedly connected between the liquid inlet of the water pump (4) and the liquid outlet of the fermentation liquid tank (3), and the conduit II is fixedly connected between the liquid outlet of the water pump (4) and the liquid inlet of the coil member (6); the conduit II is arranged through the shell cover (2), and the coil member (6) and the shell cover (2) are fixed, and a plurality of spray ports are evenly opened on the tube wall of the coil member (6) facing away from the shell cover (2).

9. The fermentation equipment according to claim 8, characterized in that: The material stirring mechanism comprises a rotating motor (8) fixedly mounted at the center of the housing cover (2), a plurality of stirring plates (9) fixedly connected to the rotating shaft of the rotating motor (8), two vertical plates (10) arranged close to the inner wall of the equipment housing (1), and a connecting plate (11) for connecting the two vertical plates (10); The rotating shaft of the rotating motor (8) vertically passes through the shell cover (2) and extends into the device shell (1), and a plurality of stirring plates (9) are staggeredly arranged on the corresponding two side walls of the rotating shaft, and the stirring plates (9) are perpendicular to the rotating shaft; The two vertical plates (10) are symmetrically arranged at positions on the other two sides of the rotation axis, and the outer walls on both sides of the vertical plates (10) are cut to form acute angles; the number of the connecting plates (11) is two groups, one group of connecting plates (11) is vertically fixed between the tops of the two vertical plates (10), and the remaining group of connecting plates (11) is vertically fixed between the bottoms of the two vertical plates (10), and the rotation axis is vertically fixed and penetrates the vertical plates (10).

10. The fermentation equipment according to claim 9, characterized in that: The oxygenation pipe (7) is located at a position on a side of the material stirring mechanism facing away from the fermentation liquid tank (3), and a one-way valve I is fixedly installed on the oxygenation pipe (7); The exhaust gas conduit (12) is fixedly connected through the top of a side wall corresponding to the equipment housing (1), and the exhaust gas conduit (12) is fixedly connected to the purification box (13); A one-way valve II is installed on the exhaust gas conduit (12), and the purification box (13) is located on one side of the equipment housing (1).

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