An aeration automatic manure microorganism rapid fermentation system and a fermentation process thereof

Abstract

The application discloses an automatic manure microbial rapid fermentation system and a fermentation process thereof, and comprises the following steps: S1, sealing ball pre-preparation: storing reaction substances in a sealing film to avoid the reaction substances from contacting with water and air; S2, material arrangement: uniformly distributing the prepared sealing film in manure and stirring and mixing to make the reaction substances in the sealing ball contact with substances in the manure; and S3, aeration reaction: including ①, the reaction substances react with water in the manure to locally generate heat energy and release oxygen; ②, the reaction substances react with carbon dioxide generated in the fermentation process to generate a large amount of heat and release oxygen; and ③, the reaction substances react with part of gases with foul smell generated in the fermentation process to consume the gases with foul smell and generate mixed gases; in the application, different substances in the sealing ball and the manure are reacted to generate oxygen and heat, aeration is provided for the manure fermentation, and stirring is formed by the overflow of the rising gas, so that the fermentation efficiency is improved.

Description

Technical Field

[0001] This invention relates to the technical field of fecal fermentation equipment, and in particular to an automated aeration system for rapid microbial fermentation of fecal liquid and its fermentation process. Background Technology

[0002] Modern livestock farming generates a large amount of manure and wastewater. Untreated manure can pollute the environment. High-temperature sealed fermentation tanks are commonly used to ferment the manure and produce organic fertilizers and other resources, thus achieving energy recovery and utilization. Existing enterprises often use agitators to stir and turn the manure, as well as air pumps to aerate it. At the same time, the fermentation tanks are heated to accelerate the fermentation of the manure.

[0003] The existing automated aeration devices for manure fermentation have the following problems: 1. Aeration and mixing require mechanical devices, which wastes energy; 2. The odorous gases produced by manure fermentation need to be purified multiple times by a purifier; 3. High-temperature fermentation requires heating elements to be installed around the tank, which increases costs and consumes electricity.

[0004] Therefore, it is necessary to improve the existing automated aeration systems and methods to solve the above problems. Summary of the Invention

[0005] This invention overcomes the shortcomings of the prior art and provides an automated aeration system for rapid microbial fermentation of fecal liquid and its fermentation process. It aims to solve the problem of how to reduce the use of mechanical devices and the setting of heating elements in the prior art, thereby reducing costs and energy consumption, while also reducing the generation of odorous gases and the use of consumables in the purifier.

[0006] To achieve the above objectives, the technical solution adopted by the present invention is: an automated aeration and rapid microbial fermentation process for fecal slurry, characterized by comprising the following steps:

[0007] S1. Pre-made sealing ball: Sodium peroxide powder or granules are stored in a sealing film to avoid contact with water and air;

[0008] S2. Material arrangement: The material is evenly distributed in the fecal liquid and stirred to facilitate the contact and reaction between sodium peroxide powder or granules and the substances in the fecal liquid. Then, the mixture of the sealed ball and the fecal liquid is sealed for fermentation.

[0009] S3. Aeration reaction: ① Sodium peroxide in the sealed ball reacts with water in the fecal liquid, generating local heat and releasing oxygen; ② Sodium peroxide reacts with carbon dioxide in the air, generating a large amount of heat and releasing oxygen; ③ Sodium peroxide reacts with some of the foul-smelling gases produced during fermentation, consuming the foul-smelling gases and producing a mixed gas.

[0010] The various chemical reactions generated in this invention are as follows:

[0011] ①2Na₂O₂ + 2H₂O = 4NaOH + O₂ (gas)

[0012] ②2Na₂O₂ + 2CO₂ = 2Na₂CO₃ + O₂ (gas)

[0013] ③ 2Na₂O₂ + 2NH₃ + 4H₂O = 4NaOH + 2NO₂(g) + 5H₂(g)

[0014] ④2Na₂O₂ + 2NH₃ = 2NaOH + 2H₂O + N₂ (gas)

[0015] It should be noted that both reactions ① and ② release heat; reaction ④ requires heating, so it will only occur when the local temperature is high.

[0016] In a preferred embodiment of the present invention, the sealing membrane is water-soluble and the water-dissolving rate is adjustable. The water-dissolving membrane facilitates the control of the contact time between the reactants and the fecal liquid inside the sealing ball, so that different reactions correspond to different fermentation stages.

[0017] This invention also provides an automated aeration system for rapid microbial fermentation of fecal slurry, comprising a fermenter and a reaction rack installed inside the fermenter, characterized in that...

[0018] The fermenter includes: a feed inlet, a discharge outlet, an exhaust outlet, and several sampling ports located on both sides of the fermenter;

[0019] The reaction rack includes a fixed frame and several reaction units disposed on the fixed frame. The reaction rack is detachable and is slidably connected to the fermenter.

[0020] In a preferred embodiment of the present invention, the reaction rack is disposed between the exhaust port and the feed port. While not affecting the input of fecal liquid into the fermentation tank, the gas generated during the fermentation process can be reacted by the reaction rack and rise to the top of the fermentation tank, and then discharged from the exhaust port. This process can pre-treat the gas, reducing the consumables and usage of the purifier.

[0021] In a preferred embodiment of the present invention, an installation hole is provided above the feed inlet, and a sealing ring and a locking element are provided on the installation hole. The installation hole is used to remove the reaction rack and replace the reaction unit on the reaction rack. At the same time, the sealing ring and the locking element can ensure that the fermenter is in a sealed environment during the fermentation process.

[0022] In a preferred embodiment of the present invention, the fermenter is provided with several horizontal slide rails inside, and the slide rails are connected to the mounting holes, so that the slide rails facilitate the removal and placement of the reaction rack.

[0023] In a preferred embodiment of the present invention, the sampling ports are distributed along the vertical direction and the spacing between adjacent sampling ports is different, so as to sample samples at different depths for testing.

[0024] In a preferred embodiment of the present invention, the feed inlet, the discharge outlet, the exhaust outlet, and the plurality of sampling ports are all provided with sealing valves to ensure the airtightness of the fermenter.

[0025] In a preferred embodiment of the present invention, a plurality of reaction units are arranged linearly in the fixed frame, and gaps are left between adjacent reaction units. The reaction units are provided with reactants, and the gaps are used for gas to pass through, so that the gas comes into contact with the reactants.

[0026] In a preferred embodiment of the present invention, the fermentation tank is cylindrical, placed horizontally, and has a fixed base at the bottom.

[0027] It should be noted that the water-soluble film in this invention is a plastic film made of polyvinyl alcohol, and its water dissolution rate can be adjusted according to requirements; the preparation method of the sealing ball is as follows: the water-soluble film is made into a semi-open shape, sodium peroxide particles or powder are filled into it, and then the opening is sealed by heat melting.

[0028] This invention addresses the shortcomings of the prior art and has the following beneficial effects:

[0029] (1) In this invention, a series of different chemical reactions are used to provide the oxygen required for the fermentation of fecal liquid. When oxygen and other gases overflow from the fecal liquid, due to the different bubble sizes and rising rates, the organic matter in the fecal liquid around the rising path will move locally, thereby achieving the effect of stirring. This solves the problem that aeration and mixing in the prior art require mechanical devices, which results in energy waste.

[0030] (2) The fermentation process provided in this invention generates heat during the fermentation process, which increases the temperature of the manure fermentation and the fermentation rate. At the same time, the fermentation tank is in a sealed environment and consumes water, which can make the manure quickly reach the required water content of the finished product, further accelerating the fermentation process. This solves the problem that high-temperature fermentation in the prior art requires heating elements to be set around the tank, which increases costs and consumes electricity.

[0031] (3) In the fermentation process, the odorous gas in the product is purified in advance, which facilitates the emission of gas and reduces the use of purifiers or the consumption of purification materials. At the same time, the product in the reaction process can be used as an acid-base regulator and element supplement to adjust the pH of the soil. Attached Figure Description

[0032] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0033] Figure 1 This is a perspective structural diagram of a preferred embodiment of the present invention;

[0034] Figure 2 This is a partial structural diagram of the reaction rack according to a preferred embodiment of the present invention;

[0035] Figure 3 This is a schematic diagram of the sealing ball portion structure of a preferred embodiment of the present invention;

[0036] In the diagram: 1. Reaction rack; 2. Locking element; 3. Mounting hole; 4. Sealing ring; 5. Feed inlet; 6. Fixed base; 7. Fermentation tank; 8. Sampling port; 9. Sealing valve; 10. Exhaust port; 11. Fixed frame; 12. Reaction unit; 13. Support; 14. Water-soluble membrane; 15. Reactant; 16. Discharge port; 17. Slide rail. Detailed Implementation

[0037] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0038] Many specific details are set forth in the following description in order to provide a full understanding of the invention. However, the invention may also be practiced in other ways different from those described herein. Therefore, the scope of protection of the invention is not limited to the specific embodiments disclosed below.

[0039] In the description of this application, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as limiting the scope of protection of this application. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, features defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this invention, unless otherwise stated, "a plurality of" means two or more.

[0040] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art will understand the specific meaning of the above terms in this application based on the specific circumstances.

[0041] like Figure 1 and Figure 2 The diagram shows a three-dimensional structural diagram and a partial structural diagram of a rapid microbial fermentation system for aerated manure, comprising: a fermentation tank 7 and a reaction frame 1 installed inside the fermentation tank 7, characterized in that...

[0042] The fermentation tank package 7 includes: an inlet 5, an outlet 16, an exhaust port 10, and several sampling ports 8 located on both sides of the fermentation tank 7; the inlet 5, outlet 16, exhaust port 10, and several sampling ports 8 are all equipped with sealing valves 9; an installation hole 3 is also provided above the inlet 5, and a sealing ring 4 and a locking element 2 are provided on the installation hole 3; the fermentation tank 7 is cylindrical, placed horizontally, and has a fixed base 6 at the bottom, and several slide rails 17 are horizontally arranged inside, and the slide rails 17 are connected to the installation hole 3.

[0043] Several sampling ports 8 are distributed vertically in the fermenter 7, and the spacing between adjacent sampling ports is different.

[0044] The reaction rack 1 includes a fixed frame 11 and several reaction units 12 mounted on the fixed frame 11 via a bracket 13. The reaction rack 1 is detachable and is slidably connected to the fermenter 7. The reaction rack 1 is located between the exhaust port 10 and the feed port 5.

[0045] Several reaction units 12 are arranged linearly in a fixed frame 11, with gaps between adjacent reaction units 12, and each reaction unit 12 is provided with a reactant 15.

[0046] like Figure 3 The diagram shows a schematic of a sealed ball structure in an automated aeration system for rapid microbial fermentation of fecal matter. The sealed ball consists of a water-soluble membrane 14 and a reactant 15.

[0047] This invention also provides an automated aeration process for rapid microbial fermentation of fecal slurry, comprising the following steps:

[0048] S1. Pre-made sealing ball: Sodium peroxide powder or granules are stored in a sealing film to avoid contact with water and air;

[0049] S2. Material arrangement: The material is evenly distributed in the fecal liquid and stirred to facilitate the contact and reaction between sodium peroxide powder or granules and the substances in the fecal liquid. Then, the mixture of the sealed ball and the fecal liquid is sealed for fermentation.

[0050] S3. Aeration reaction: ① Sodium peroxide in the sealed ball reacts with water in the fecal liquid, generating local heat and releasing oxygen; ② Sodium peroxide reacts with carbon dioxide in the air, generating a large amount of heat and releasing oxygen; ③ Sodium peroxide reacts with some of the foul-smelling gases produced during fermentation, consuming the foul-smelling gases and producing a mixed gas.

[0051] It should be noted that, in this invention, suitable substances can be added to the fecal liquid as needed before fermentation begins.

[0052] Reaction process one:

[0053] 2Na₂O₂ + 2H₂O = 4NaOH + O₂, which consumes water in the fecal liquid, produces oxygen and the alkaline substance sodium hydroxide, and releases a large amount of heat at the same time;

[0054] Reaction process two:

[0055] 2Na₂O₂ + 2CO₂ = 2Na₂CO₃ + O₂, consuming carbon dioxide from the air, producing oxygen and releasing heat in the process;

[0056] Reaction process three:

[0057] 2Na₂O₂ + 2NH₃ + 4H₂O = 4NaOH + 2NO₂ + 5H₂, consuming ammonia and water vapor, and producing nitrogen dioxide gas, hydrogen gas, and sodium hydroxide.

[0058] Reaction process four:

[0059] 2Na₂O₂ + 2NH₃ = 2NaOH + 2H₂O + N₂. This reaction will only occur when the internal temperature reaches the reaction temperature.

[0060] In this invention, a series of different chemical reactions provide the necessary oxygen for manure fermentation. When oxygen and other gases rise from the manure, the different bubble sizes and rising rates cause localized movement of organic matter in the surrounding manure along the rising path, achieving a stirring effect. This solves the problem of energy waste caused by the need for mechanical devices for aeration and mixing in existing technologies. Heat is generated during fermentation, increasing the fermentation temperature and rate. Simultaneously, the sealed fermentation tank consumes water, allowing the manure to quickly reach the required moisture content for the final product, further accelerating the fermentation process. This solves the problem of increased costs and energy consumption associated with high-temperature fermentation in existing technologies, which require heating elements around the tank. Furthermore, this invention pre-purifies odorous gases in the product during fermentation, facilitating gas emission and reducing the use of purifiers or the consumption of purification materials. The reaction products can also be used as acid-base regulators and element supplements to adjust soil pH.

[0061] In practical use, the reaction rack with the reaction units arranged is first placed into the fermenter through the mounting holes and sealed by locking elements and sealing valves; then the sealing ball is added into the manure liquid and mixed, and fed into the fermenter through the feed inlet, and the sealing valve at the feed inlet is closed for sealed fermentation. During fermentation, the water-soluble film gradually dissolves in water, releasing sodium peroxide powder or granules. The sodium peroxide reacts with the water in the fecal liquid, releasing oxygen for fermentation and simultaneously releasing heat to create a high-temperature, sealed environment, accelerating the fermentation process. Carbon dioxide in the upper layer of the fermenter reacts with the reaction unit on the reaction rack to generate oxygen, providing oxygen for surface fermentation of the fecal liquid. Gases with foul odors, such as ammonia, produced during fermentation rise to the top of the fermenter and react with the reactants in the reaction unit, purifying the gas in advance and reducing environmental pollution and the need for purifiers. Because the fermenter in this invention remains sealed, the gases produced during fermentation increase the internal pressure, creating a high-pressure environment. The accompanying heat from the reaction keeps the fecal liquid fermenting in a high-temperature, high-pressure environment, continuously oxidizing and decomposing organic matter in a short time, achieving a better fecal liquid treatment effect.

[0062] Based on the preferred embodiments of the present invention described above, those skilled in the art can make various changes and modifications without departing from the inventive concept. The technical scope of this invention is not limited to the contents of the specification, but must be determined according to the scope of the claims.

Claims

1. An automated aeration process for rapid microbial fermentation of fecal slurry, characterized in that, Includes the following steps: S1. Pre-made sealing ball: Sodium peroxide powder or granules are stored in a sealing film to avoid contact with water and air; S2. Material arrangement: The material is evenly distributed in the fecal liquid and stirred to facilitate the contact and reaction between sodium peroxide powder or granules and the substances in the fecal liquid. Then, the mixture of the sealed ball and the fecal liquid is sealed for fermentation. S3. Aeration reaction: ① Sodium peroxide in the sealed ball reacts with water in the fecal liquid, generating local heat and releasing oxygen; ② Sodium peroxide reacts with carbon dioxide in the air, generating a large amount of heat and releasing oxygen; ③ Sodium peroxide reacts with ammonia produced during fermentation, consuming the ammonia and producing a mixed gas. The sealing film is water-soluble and the water-dissolving rate is adjustable; it is a plastic film made of polyvinyl alcohol.

2. An automated aerated manure microbial rapid fermentation system, based on the automated aerated manure microbial rapid fermentation process of claim 1, comprising a fermenter and a reaction rack installed inside the fermenter, characterized in that, The fermenter includes: a feed inlet, a discharge outlet, an exhaust outlet, and several sampling ports located on both sides of the fermenter; The reaction rack includes a fixed frame and several reaction units disposed on the fixed frame. Each reaction unit contains a reactant, which is sodium peroxide. The reaction rack is detachable and is slidably connected to the fermenter.

3. The automated aeration and rapid microbial fermentation system for fecal slurry according to claim 2, characterized in that: The reaction rack is positioned between the exhaust port and the feed port.

4. The automated aeration and rapid microbial fermentation system for fecal slurry according to claim 2, characterized in that: An installation hole is provided above the feed inlet, and a sealing ring and a locking element are provided on the installation hole.

5. The automated aeration and rapid microbial fermentation system for fecal slurry according to claim 4, characterized in that: The fermenter is equipped with several horizontal slide rails inside, and the slide rails are connected to the mounting holes.

6. The automated aeration and rapid microbial fermentation system for fecal slurry according to claim 2, characterized in that: The sampling ports are distributed along the vertical direction.

7. The automated aeration and rapid microbial fermentation system for fecal slurry according to claim 2, characterized in that: The feed inlet, the discharge outlet, the exhaust outlet, and several of the sampling ports are all equipped with sealing valves.

8. The automated aeration and rapid microbial fermentation system for fecal slurry according to claim 2, characterized in that: Several of the reaction units are arranged linearly in the fixed frame, with gaps between adjacent reaction units.

9. The automated aeration and rapid microbial fermentation system for fecal slurry according to claim 2, characterized in that: The fermentation tank is cylindrical, placed horizontally, and has a fixed base at the bottom.

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