A manure fractionated fermentation control device and control method

Abstract

The application discloses a kind of fecal liquid segmented fermentation control device and control method, comprising: fermentation stage instrument, and conversion stage instrument of next stage in conversion stage, fermentation stage instrument and conversion stage instrument are provided with sedimentation mechanism in, setting circulation mechanism in the four around of sedimentation mechanism, and conveying mechanism connected to two stages;Sedimentation mechanism includes: upper chamber, lower chamber is set to the bottom of upper chamber, connecting barrel is provided between upper chamber and lower chamber, and connecting barrel is set as hollow cone;Circulation mechanism includes: shell, auger is set to the inside of shell, and sprocket is fixedly connected with auger;Auger is rotatably connected with shell, and a plurality of sprockets are driven by chain, and motor is fixedly connected at the bottom of sprocket;Conveying mechanism is mainly used to convey fecal liquid in fermentation stage instrument to continue fermentation in conversion stage instrument;It is favorable to keep the stability of fermentation system.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of manure fermentation, in particular to a manure segmented fermentation control device and control method. BACKGROUND

[0002] The septic tank system refers to a small treatment system for separating and depositing domestic sewage and anaerobically digesting sludge. It is a device for treating excrement and filtering and depositing, and its principle is that solidified objects are decomposed at the bottom of the tank, and the hydrated objects in the upper layer flow into the pipeline, preventing pipeline blockage and providing sufficient time for the hydrolysis of solidified objects.

[0003] However, in the prior art, the fermentation of manure is mostly directly introduced into the septic tank for fermentation. During the fermentation process, the microbial community in the septic tank is severely impacted, which is not conducive to the fermentation of manure. SUMMARY

[0004] The present application overcomes the shortcomings of the prior art and provides a manure segmented fermentation control device and control method.

[0005] To achieve the above-mentioned purpose, the technical scheme adopted by the present application is as follows: a manure segmented fermentation control device, comprising: a fermentation stage instrument, and a conversion stage instrument for the next stage, a sedimentation mechanism is arranged in the fermentation stage instrument and the conversion stage instrument, a circulating mechanism is arranged around the sedimentation mechanism, and a conveying mechanism is arranged for connecting the two stages;

[0006] The sedimentation mechanism comprises: an upper chamber, a lower chamber arranged at the bottom of the upper chamber, and a connecting cylinder arranged between the upper chamber and the lower chamber, wherein the connecting cylinder is hollow and conical.

[0007] The circulating mechanism comprises: a shell, an auger arranged on the inner side of the shell, and a sprocket fixedly connected with the auger; the auger is rotatably connected with the shell, a plurality of sprockets are driven by chains, and a motor is fixedly connected to the bottom of the sprocket.

[0008] The conveying mechanism is mainly used for conveying manure in the fermentation stage instrument to the conversion stage instrument for further fermentation.

[0009] In a preferred embodiment of the present application, a plurality of connecting cylinders are uniformly arranged, the top of the connecting cylinders constitutes the bottom of the upper chamber, and the bottom of the connecting cylinders is in communication with the top of the lower chamber.

[0010] In a preferred embodiment of the present application, the top of the upper chamber is arranged as an opening, a plurality of through holes are uniformly arranged around the top of the lower chamber, and the upper chamber and the lower chamber are of the same size.

[0011] In a preferred embodiment of the present application, the conveying mechanism mainly comprises a feeding pump and a conveying shell, and the two ends of the conveying shell are communicated with the lower chamber of the fermentation stage device and the upper chamber of the conversion stage device respectively.

[0012] The present application discloses a manure stage fermentation control method, and relates to the technical field of manure stage fermentation control devices.

[0013] S1: placing manure into a sedimentation tank for sedimentation, then performing solid-liquid separation to obtain concentrated manure, and then performing fermentation;

[0014] S2: extracting the concentrated manure into the upper chamber of the fermentation stage device in two batches for fermentation, and then slowly depositing until the bottom of the lower chamber, flowing into the circulating mechanism, and then uploading to the upper chamber again through the circulating mechanism;

[0015] S3: performing first conveying through the conveying mechanism, conveying to the conversion stage device for fermentation, detecting changes in pH value and temperature, and then performing second conveying to convey all the concentrated manure.

[0016] In S1 of the preferred embodiment of the present application, the total solid content of the concentrated manure is 10%-15%.

[0017] In S2 of the preferred embodiment of the present application, the two batches of extraction are as follows: the first extraction is between 3%-9% of the upper chamber, and the second extraction is all the extraction, the aeration amount for fermentation is 2-3 times of the conveying amount, the temperature is 20-40 DEG C, the humidity is 50%-70%, and the time is one to two weeks.

[0018] In S3 of the preferred embodiment of the present application, the conveying amount of the first conveying is 9%-18% of the upper chamber in the conversion stage device, the change in pH value is that the pH value starts to decrease, and the change in temperature is that the temperature starts to rise.

[0019] In S3 of the preferred embodiment of the present application, the fermentation of the conversion stage device is aerobic-anaerobic conversion stage fermentation of the manure conveyed to the upper chamber of the stage, natural fermentation and deposition in the upper chamber to the lower chamber, and then conveying to the upper chamber again through the circulating mechanism of the stage for cyclic fermentation.

[0020] In S3 of the preferred embodiment of the present application, the fermentation temperature is 20-35 DEG C, the fermentation humidity is 60%-70%, and the time is 5-15 days.

[0021] The present application solves the defects in the background art, and has the following beneficial effects:

[0022] (1) The present application provides a fecal liquid segmented fermentation control device and control method, which is fermented by combining a circulating fermentation device with a fermentation method of batch fermentation in proportion, and by feeding the fermentation system in proportion according to the fecal liquid concentration, so that the microbial community can better adapt to the fecal liquid during the fermentation process, thereby improving the fermentation effect and avoiding the generation of harmful gases. Compared with the prior art, the subsequent fecal liquid can realize smooth transition between stages, avoid the impact and instability caused by sudden large amount of fecal matter, and is beneficial to maintaining the stability of the fermentation system.

[0023] (2) The present application provides a fecal liquid segmented fermentation control device and control method, which is fermented by first precipitating the fecal liquid to extract concentrated fecal liquid, so as to better control the temperature, humidity, ventilation and other parameters in the fermentation process, thereby improving the stability and controllability of the fermentation process. Compared with the uniform fermentation in the prior art, the fermentation effect is improved, the emission of odor and harmful gases generated in the uniform fermentation process is avoided, and the pollution to the environment is reduced.

[0024] (3) The present application provides a fecal liquid segmented fermentation control device and control method, which is fermented by feeding the fecal liquid into each stage in different proportions, so that the microbial community in the fermentation process has a pre-adaptation stage. After the microbial community is fully adapted, the next batch in proportion can skip the adaptation stage and directly proceed with fermentation, thereby improving the fermentation rate. Compared with the prior art, the equal proportion of batch feeding into each stage of fermentation can improve the operation of the fermentation system while maintaining the stability of the fermentation system, and promote the smooth progress of the fermentation process. BRIEF DESCRIPTION OF DRAWINGS

[0025] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed in the following embodiment or prior art description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor;

[0026] Figure 1 is a perspective view of the preferred embodiment of the present application;

[0027] Figure 2 is a schematic diagram of the time required for fermentation completion at different total solid contents of the preferred embodiment of the present application;

[0028] Figure 3 is a schematic diagram of the dissolved oxygen concentration corresponding to the time required for fermentation completion at different total solid contents of the preferred embodiment of the present application;

[0029] Figure 4is a first schematic diagram of the time required for fermentation to be completed at different feeding amounts, which is a preferred embodiment of the present application;

[0030] Fig. 1 is a fermentation stage device; 2 is a conversion stage device; 3 is a sedimentation mechanism; 31 is an upper chamber; 32 is a lower chamber; 33 is a connecting cylinder; 4 is a circulation mechanism; 5 is a conveying mechanism. DETAILED DESCRIPTION

[0031] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the protection scope of the present application.

[0032] In the following description, many specific details are set forth in order to provide a thorough understanding of the present application. However, the present application can be practiced in a variety of ways beyond the specific embodiments described herein, and the scope of the present application is not limited to the specific embodiments described herein.

[0033] In the description of the present application, it should be understood that the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the purpose of facilitating the description of the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the scope of protection of the present application. In addition, the terms "first", "second", and the like are only for the purpose of description and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined with "first", "second" and the like can explicitly or implicitly include one or more features. In the description of the present application, unless otherwise specified, the meaning of "a plurality of" is two or more.

[0034] In the description of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connection" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood through specific circumstances.

[0035] As Figure 1As shown, a fecal liquid segmented fermentation control device comprises: a fermentation stage device 1, and a conversion stage device 2 for the next stage, the fermentation stage device 1 and the conversion stage device 2 are both provided with a sedimentation mechanism 3, a circulation mechanism 4 arranged around the sedimentation mechanism 3, and a conveying mechanism 5 connected between the two stages;

[0036] It should be noted that the fecal liquid fermentation is divided into two stages, namely the fermentation stage and the conversion stage, and the structures of the two stages are the same, but the internal fermentation environments are different, the main body of each stage structure is the sedimentation mechanism 3, the fecal liquid is fermented in the sedimentation mechanism 3, and the circulation mechanism 4 is fixedly connected around the sedimentation mechanism 3 to enable the fecal liquid in the sedimentation mechanism 3 to circulate and flow to fully ferment, and the conveying mechanism 5 is used to convey the fecal liquid in two batches between the two stages, the first batch of fecal liquid is conveyed into each stage at a certain ratio, so that the microorganisms in different stages gradually adapt and start to ferment, and the remaining fecal liquid is all conveyed at the initial stage of fermentation, so as to accelerate the fermentation rate and maintain the balance of the microbial environment.

[0037] In work, the fecal liquid is conveyed into the sedimentation mechanism 3 in the fermentation stage device 1 to be fermented, the circulation mechanism 4 is used to make the fecal liquid circulate and ferment in the sedimentation mechanism 3 in the fermentation stage device 1, then the conveying mechanism 5 is used to convey the fecal liquid fermented in the fermentation stage to the sedimentation mechanism 3 in the conversion stage device 2 to continue to ferment, and the circulation mechanism 4 in the stage is also used to circulate and ferment.

[0038] The sedimentation mechanism 3 comprises: an upper chamber 31, a lower chamber 32 arranged at the bottom of the upper chamber 31, and a connecting cylinder 33 arranged between the upper chamber 31 and the lower chamber 32, wherein the connecting cylinder 33 is arranged in a hollow conical shape.

[0039] In a preferred embodiment of the present application, the connecting cylinder 33 is uniformly provided with a plurality of connecting cylinders 33, the top of the plurality of connecting cylinders 33 constitutes the bottom of the upper chamber 31, and the bottom of the connecting cylinder 33 is in communication with the top of the lower chamber 32.

[0040] In a preferred embodiment of the present application, the top of the upper chamber 31 is arranged in an open manner, the top of the lower chamber 32 is uniformly provided with through holes around, and the upper chamber 31 and the lower chamber 32 are the same size.

[0041] It should be noted that the upper chamber 31 and the lower chamber 32 are the same size, the bottom of the upper chamber 31 is provided with a plurality of conical connecting cylinders 33, the connecting cylinder 33 is arranged in a hollow manner, the larger end of the connecting cylinder 33 is the bottom surface of the upper chamber 31, the smaller end is in communication with the lower chamber 32, and the upper chamber 31 and the lower chamber 32 are arranged vertically.

[0042] When working, the manure liquid is first introduced into the upper chamber 31, and the manure liquid is subjected to precipitation and fermentation in the upper chamber 31, and since the upper chamber 31 is vertically arranged and the middle is connected by the tapered connecting cylinder 33, the manure liquid is continuously and slowly precipitated downward during fermentation, and is in a stable flow state, so that the manure liquid is more fully contacted with the microorganisms during fermentation, and the growth and metabolism of the fermentation microorganisms are promoted.

[0043] The circulating mechanism 4 comprises a shell, an auger arranged on the inner side of the shell, and a chain wheel fixedly connected with the auger; the auger is rotationally connected with the shell, and the chain wheels are driven by a chain; the bottom of the chain wheel is fixedly connected with a motor;

[0044] It should be noted that the shell is fixedly connected with the four sides of the upper chamber 31, the shell is rotationally connected with the auger, the bottom of the shell is rotationally connected with the chain wheel, and the bottom of the lower chamber is also rotationally connected with a plurality of chain wheels; the chain wheels are connected and driven by a chain, and the chain wheel at the bottom of the lower chamber is fixedly connected with the motor.

[0045] When working, the motor is rotated to drive the chain wheel to rotate, thereby driving the caster to rotate; the upper and lower ends of the shell are communicated with the upper chamber and the lower chamber, respectively; the manure liquid in the upper chamber is subjected to fermentation and precipitation and flows into the lower chamber for fermentation and precipitation, and finally is transported again by the auger to the upper chamber for fermentation and precipitation, so as to reciprocally and circularly ferment, promote the growth and metabolism of the microorganisms, and avoid manual stirring, so that the manure liquid is continuously and slowly precipitated instead of being manually stirred.

[0046] The conveying mechanism 5 is mainly used for conveying the manure liquid in the fermentation stage device 1 to the conversion stage device 2 for continuous fermentation.

[0047] In a preferred embodiment of the present application, the conveying mechanism 5 mainly comprises a feeding pump and a conveying shell, and the two ends of the conveying shell are respectively communicated with the lower chamber 32 of the fermentation stage device 1 and the upper chamber 31 of the conversion stage device 2.

[0048] It should be noted that the conveying mechanism 5 is mainly used for conveying the manure liquid to different stages, and the conveying shell is respectively communicated with the lower chamber of the stage and the upper chamber of the next stage, so that after the fermentation of the stage is completed, the manure liquid is conveyed from the lower chamber of the stage to the conveying shell by the feeding pump, and then is conveyed to the upper chamber of the next stage by the conveying shell for fermentation.

[0049] A manure liquid stage-type fermentation control method based on a control method of a manure liquid segmented fermentation control device, comprising the following steps:

[0050] S1: placing the manure liquid into a settling tank for precipitation, and then performing solid-liquid separation to obtain concentrated manure liquid for fermentation;

[0051] In S1, in a preferred embodiment of the present application, the total solid content of the concentrated manure liquid is 10%-15%.

[0052] It should be noted that the fecal liquid is all introduced into the sedimentation tank for precipitation, and the fecal liquid is subjected to solid-liquid separation, so that the concentrated fecal liquid with a total solid content of 10%-15% is obtained, and the concentrated fecal liquid is pumped into the fermentation stage device 1 for aerobic fermentation in the fermentation stage.

[0053] S2: The concentrated fecal liquid is pumped into the upper chamber 31 of the fermentation stage device 1 in two batches for fermentation, and then slowly precipitates until the bottom of the lower chamber 32, flows into the circulating mechanism 4, and is uploaded to the upper chamber 31 again through the dragon.

[0054] It should be noted that the two batches of pumping specifically refer to first introducing a batch into the upper chamber 31 of the fermentation stage device 1 according to a certain proportion, and after the first batch is introduced, the microorganisms in the precipitation mechanism 3 of this stage begin to adapt to the fecal liquid, and after the adaptation ends, the fecal liquid begins to be fermented gradually, and since this stage is aerobic fermentation, the sign that the microorganisms adapt and the stable fermentation begins is that the oxygen consumption in this stage increases and the temperature rises, so the second batch of fecal liquid is introduced at this time.

[0055] In one preferred embodiment of the present application, in S2, the two batches of pumping specifically refer to that the first time pumping is between 3%-9% of the upper chamber 31, and the second time pumping is all pumping, the aeration amount of fermentation is 2-3 times the amount of introduction, the temperature is 20-40℃, the humidity is 50%-70%, and the time is one to two weeks.

[0056] It should be noted that the fermentation in the fermentation stage is aerobic fermentation, and the concentrated fecal liquid is pumped into the upper chamber 31 of the fermentation stage device 1 in an amount of 3%-9% of the upper chamber 31 for fermentation, and the aeration amount is controlled to be 2-3 times the amount of introduction, the temperature is 20-40℃, the humidity is 50%-70%, and the time is one to two weeks, when the dissolved oxygen concentration decreases to a low level, lower than 2mg / L, or even close to saturation, the fermentation in this stage is completed; after the upper chamber 31 is introduced, the fecal liquid slowly precipitates until the bottom of the lower chamber 32, flows into the circulating mechanism 4, and is uploaded to the upper chamber 31 again through the dragon to circulate and ferment, and the dissolved oxygen concentration is detected.

[0057] S3: First transport is performed through the transport mechanism 5, and is transported to the conversion stage device 2 for fermentation, and changes in pH value and temperature are detected, after the pH value and temperature change, the second time, the concentrated fecal liquid is introduced.

[0058] In one preferred embodiment of the present application, in S3, the first transport amount is 9%-18% of the upper chamber 31 in the conversion stage device 2, the pH value changes are that the pH value begins to decrease, and the temperature changes are that the temperature begins to rise.

[0059] It should be noted that when the pH value begins to drop and the temperature begins to rise, it indicates that the microorganisms in this stage have adapted to the environment after the feces is introduced, and the fermentation operation begins, so at this time the remaining feces is introduced again to directly perform fermentation, thereby reducing the adaptation stage of the microorganisms.

[0060] In a preferred embodiment of the present application, in S3, the fermentation of the conversion stage device 2 is aerobic-anaerobic conversion stage fermentation for conveying the feces to the upper chamber 31 of the stage, natural fermentation and precipitation in the upper chamber 31 to the lower chamber 32, and then conveying to the upper chamber 31 again by the circulating mechanism 4 of the stage to perform cyclic fermentation.

[0061] In a preferred embodiment of the present application, in S3, the fermentation temperature is 20-35°C, the fermentation humidity is 60-70%, and the time is 5-15 days.

[0062] It should be noted that the fermentation in the conversion stage is aerobic-anaerobic conversion stage fermentation, and the same cyclic fermentation method as the aerobic stage is used during fermentation, but the internal fermentation environment is different. The fermentation temperature in this stage is 20-35°C, the fermentation humidity is 60-70%, the time is 5-15 days, and the conveying amount is 9-18% of the upper chamber 31 in the conversion stage device 2 each time.

[0063] Example 1:

[0064] All the fecal liquid is fed into a sedimentation tank for sedimentation, followed by solid-liquid separation to extract a concentrated fecal liquid with a total solids content of 10%-15%. The fecal liquid is then introduced into fermentation stage 1 in two batches for aerobic fermentation. The first introduction involves extracting 3%-9% of the concentrated fecal liquid from the upper chamber 31 and feeding it into the upper chamber 31 of fermentation stage 1. During fermentation, the aeration rate is controlled at 2 to 3 times the introduced volume, the temperature at 20℃-40℃, the humidity at 50%-70%, and the pH at 6.5-8.0 for one to two weeks. The main microorganisms include actinomycetes, Bacillus subtilis, anaerobic Clostridium, and other Gram-positive bacteria. They work together to decompose and transform organic matter. During the aerobic stage, these aerobic microorganisms utilize oxygen from the air to promote the initial decomposition and oxidation of organic matter, generating heat and carbon dioxide. The start of fermentation in the aerobic stage of fecal liquid fermentation is marked by an increase in oxygen consumption and a rise in temperature. When fermenting microorganisms begin to metabolize organic matter, they release heat, causing the temperature to rise. Simultaneously, the rate at which the microbial community consumes oxygen also increases, as microorganisms require oxygen for metabolic activities. Therefore, the increase in oxygen consumption and the rise in temperature are usually indicators that the aerobic fermenting microbial community has begun fermentation. After this increase, a second introduction is performed, directly introducing all the remaining fecal liquid into fermentation stage 1 for aerobic fermentation. This reduces the intermediate adaptation phase for the microorganisms and increases the fermentation rate. During fermentation, the liquid is first introduced into the upper chamber 31 and then slowly settles until it reaches the bottom of the lower chamber 32. It then flows into the circulation mechanism 4 and is re-uploaded to the upper chamber 31 via a auger for cyclical fermentation. The dissolved oxygen concentration is monitored until it drops to a low level, below 2 mg / L, or even close to saturation, at which point this stage of fermentation is complete.

[0065] Finally, the aerobic-anaerobic conversion fermentation stage is carried out in the conversion stage device 2. The fecal liquid is transported to the conversion stage device 2 through the conveying mechanism 5 for fermentation. The same circulating fermentation method as the aerobic stage is used during fermentation, but the internal fermentation environment is different. The fermentation temperature in this stage is 20℃-35℃, the fermentation humidity is 60%-70%, and the time is 5-15 days. Each time, the amount transported is 9%-18% of the upper chamber 31 in the conversion stage device 2. This stage is also carried out in two batches. The first batch is transported to the conversion stage device 2 in two batches through the conveying mechanism 5. The first batch is transported at 9%-18% of the upper chamber 31. When the pH value in the upper chamber 31 decreases and the temperature rises, the second batch is introduced. The remaining amount is then introduced in the second batch for fermentation.

[0066] Comparative Example 1:

[0067] Compared with Example One, ten concentrations of manure with total solid content of 8%-17% were selected to do comparative experiments, and the fermentation test was carried out in the fermentation stage device 1 and the subsequent conversion stage device 2. The specific see Figure 2 and Figure 3 .

[0068] The experimental conditions are: temperature: 30℃; humidity: 60%; pH: 6.5; microbial flora: actinomycetes, bacillus subtilis, anaerobic clostridium and gram-positive bacteria.

[0069] Figure 2 The horizontal coordinate is the total solid content, and the vertical coordinate is the number of days required for the completion of the aerobic stage fermentation. According to Figure 2 It can be seen that when the total solid content is between 10%-15%, the aerobic stage can be controlled within one to two weeks, but when the total solid content is more than 10%-15% or less than 10%-15%, it needs longer time to carry out the fermentation of the aerobic stage, thereby reducing the work efficiency.

[0070] Figure 3 The horizontal coordinate in Figure 2 is the number of days required for the completion of the aerobic stage fermentation, and the vertical coordinate is the dissolved oxygen concentration at the completion of the fermentation. By detecting the dissolved oxygen concentration on the same day, it is found that the dissolved oxygen concentration at the completion of the aerobic stage is less than 0.3mg / L, indicating that the microorganisms have utilized most of the oxygen for biological oxidation reaction, and from the positive reaction, the fermentation of the aerobic stage has been completed, and the next stage can be entered.

[0071] In combination with Figure 2 and Figure 3 it is concluded that when the fermentation of the aerobic stage is carried out, the total solid content of the concentrated manure is 10%-15%, and the fermentation efficiency is higher, only one to two weeks is needed to make the dissolved oxygen concentration less than 0.3mg / L, so as to complete the fermentation of the aerobic stage.

[0072] Comparative Example Two:

[0073] Compared with the aerobic stage fermentation in Example One, the other conditions are the same, and the amount of manure introduced into the aerobic stage is changed, and the comparative experiment is carried out. The specific see Figure 4 .

[0074] The experimental conditions of the aerobic stage are: temperature: 30℃; humidity: 60%; pH: 6.5; microbial flora: actinomycetes, bacillus subtilis, anaerobic clostridium and gram-positive bacteria.

[0075] The aerobic-anaerobic stage experiment conditions are: temperature: 28℃; humidity: 65%; pH: 6.5; microbial flora: methanogens, sulfate-reducing bacteria, actinomycetes, and bacillus subtilis.

[0076] In Table 4, the horizontal coordinate is the different manure quantity in the aerobic stage and the aerobic-anaerobic conversion stage, and the vertical coordinate is the time required for completing the fermentation. It can be seen from the coordinates that when the first quantity in the aerobic stage is between 3% and 9% and the aerobic-anaerobic conversion stage is between 9% and 18%, the time is the shortest, and the rate of the microorganisms completely adapting to start the fermentation operation is the fastest.

[0077] The above is based on the ideal embodiment of the present application, and through the above description, relevant personnel can make various changes and modifications without deviating from the technical idea of the present application. The technical scope of the present application is not limited to the content of the specification, and must be determined according to the scope of the claims.

Claims

1. A manure stage fermentation control method, characterized in that, comprising a manure stage fermentation control device, comprising: a fermentation stage instrument, and a conversion stage instrument, a sedimentation mechanism is arranged in the fermentation stage instrument and the conversion stage instrument, a circulating mechanism is arranged around the sedimentation mechanism, and a conveying mechanism is connected between the two stages; the sedimentation mechanism comprises: an upper chamber, a lower chamber arranged at the bottom of the upper chamber, a connecting cylinder arranged between the upper chamber and the lower chamber, and the connecting cylinder is arranged in a hollow conical shape; the circulating mechanism comprises: a shell, an auger arranged on the inner side of the shell, and a sprocket fixedly connected with the auger; the auger is rotatably connected with the shell, a plurality of sprockets are driven by chains, and a motor is fixedly connected to the bottom of the sprocket; the conveying mechanism is mainly used for conveying the manure in the fermentation stage instrument into the conversion stage instrument in two batches for further fermentation; a plurality of connecting cylinders are uniformly arranged, the top of the connecting cylinders constitutes the bottom of the upper chamber, and the bottom of the connecting cylinder is in communication with the top of the lower chamber; the fermentation method comprises the following steps: S1: placing manure in a sedimentation tank for sedimentation, then performing solid-liquid separation to obtain concentrated manure, and then performing fermentation; S2: extracting the concentrated manure into the upper chamber of the fermentation stage instrument in two batches for fermentation, then slowly depositing until the deposit is at the bottom of the lower chamber, flowing into the circulating mechanism, and then uploading to the upper chamber again through the auger; S3: performing first conveying through the conveying mechanism, conveying to the conversion stage instrument for fermentation, detecting changes in pH value and temperature, and after the pH value and temperature change, performing second conveying to ferment the remaining manure; in S2, the two batches of extraction are specifically that the first extraction amount is between 3%-9% of the upper chamber, and the second extraction is full extraction, the ventilation amount of fermentation is 2-3 times the inlet amount, the temperature is 20-40℃, the humidity is 50-70%, and the time is one to two weeks; the two batches of extraction are specifically that a batch is first introduced into the upper chamber of the fermentation stage instrument according to a certain proportion, the microorganisms in the sedimentation mechanism of this stage begin to adapt to the manure after the first batch is introduced, and after the adaptation is completed, the second batch of manure is introduced for fermentation.

2. A manure phased fermentation control method according to claim 1, characterized in that: the top of the upper chamber is arranged in an open manner, the top of the lower chamber is uniformly provided with through holes around the top, and the upper chamber and the lower chamber are the same size.

3. A method of controlling the stage of manure fermentation according to claim 1, characterized in that: the conveying mechanism mainly comprises a feeding pump and a conveying shell, and the two ends of the conveying shell are in communication with the lower chamber of the fermentation stage instrument and the upper chamber of the conversion stage instrument, respectively.

4. The method of claim 1, wherein: in S1, the total solid content of the concentrated manure is 10%-15%.

5. A method of controlling the stage of manure fermentation according to claim 1, characterized in that: in S3, the conveying amount of the first conveying is 9%-18% of the upper chamber in the conversion stage instrument, the pH value change is that the pH value begins to decrease, and the temperature change is that the temperature begins to rise.

6. A manure phased fermentation control method according to claim 1, characterized in that: In the S3, the conversion stage instrument fermentation is to transport the manure liquid to the upper chamber of the stage for aerobic-anaerobic conversion stage fermentation, and the natural fermentation in the upper chamber is precipitated to the lower chamber, and then transported to the upper chamber again by the circulation mechanism of the stage for circulation fermentation.

7. A method of controlling the stage of manure fermentation according to claim 1, characterized in that: In the S3, the fermentation temperature is 20-35℃, the fermentation humidity is 60-70%, and the time is 5-15 days.

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