CN106916732A - Honeybee van-type stalk fermentation system and its fermentation process - Google Patents

Abstract

The invention discloses a kind of honeybee van-type stalk fermentation system and its fermentation process, fermentation system includes installation for fermenting, multiple filler units for directly loading stalk are provided with installation for fermenting, the top surface of filler unit is located at the maximum water level in installation for fermenting, and the bottom surface of filler unit is located at the lowest water level line of installation for fermenting bottom；Filler unit includes stalk filling area and the zymotic fluid excessively stream area positioned at stalk filling area end, adjacent two filler unit is positive and negative to be arranged in installation for fermenting, liquid baffling fermentation passage is formed in installation for fermenting by the zymotic fluid excessively stream area of positive and negative setting, the liquid feeding end of liquid baffling fermentation passage is connected with water influent pipeline, and outlet end is connected with circulation line.The present invention can effectively ensure that being fully contacted for anaerobe and stalk thing, improve the fermentation concentration and gas producing efficiency of fermentation reactor, and stalk need not be pre-processed, and reduce the pretreatment of raw material operating process of stalk engineering.

Description

Honeycomb straw fermentation system and fermentation method thereof

technical field

The invention relates to a straw fermentation system, in particular to a beehive-type straw fermentation system and a fermentation method thereof, belonging to the field of biogas engineering.

Background technique

As a special raw material for biogas fermentation, crop straw has the characteristics of easy floating, difficult mixing (serious stratification), crusting, etc., which is very unfavorable for uniform mass transfer and efficient fermentation in fermentation equipment. In engineering applications, biogas fermentation devices with different economic inputs and different fermentation scales have appeared. These devices generally adapt to the requirements of the existing fermentation device for the characteristics of the fermentation material by changing the material characteristics of the straw - doing pretreatment such as crushing, so as to achieve the purpose of smooth feeding and discharging. For example, Chinese Patent Publication No. CN203200264U discloses a high-efficiency mixed anaerobic fermentation device, which was disclosed on September 18, 2013, and includes a tank body, a feed pipe, a discharge pipe, a sludge discharge pipe, a biogas pipe, and a biogas stirring pipe. , tank top stirring motor, stirring paddle, hydraulic baffle, biogas shield and heating coil. The core of this patent is to achieve the purpose of uniform stirring through a large amount of mechanical stirring energy consumption. As another example, Chinese Patent Publication No. CN102876566A discloses an up-baffled straw-type mobile biogas fermentation tank. The disclosure date is January 16, 2013. There are at least three oblique baffles arranged in a folded shape inside the tank. The lower end of each slanted baffle is provided with a scum port, except for the slanted baffle located at the top of the tank, there are scum channels between the upper end of the other slanted baffles and the inner wall of the tank; The top is provided with a feed hopper and an air outlet, and the feed pipe and return pipe connected to the feed hopper extend to the lower part of the tank body; There is a scum discharge valve located under the uppermost inclined baffle. This patent does not consider the effective mixing of anaerobic microorganisms in the fermentation broth and straw materials.

The above-mentioned prior art all need to carry out pretreatment such as pulverizing to straw. As a result, the current straw biogas continuous fermentation device has low material concentration (fermentation TS ≤ 3%), high energy consumption in fermentation operation, low gas production efficiency, and low gas production efficiency in anaerobic digestion, which seriously restrict the development of rice straw biogas projects. Long-term efficient operation.

Due to the material characteristics of rice straw that is easy to float, even after powdered pretreatment, it is difficult to ensure its uniform mass transfer after entering the fermentation device. In addition, due to the high lignin content of rice straw itself, which accounts for about 10%-15% of its dry weight, it is difficult to be decomposed by anaerobic microorganisms without treatment, making its overall fluidity in the reactor poor. , easy to cause pipeline blockage. In addition, the floating characteristics of rice straw make it easy to form scum on the surface of the fermentation liquid, which is easier to crust than livestock and poultry manure reactors, resulting in waste of fermentation raw materials and inhibiting the release of methane.

Therefore, the development of a new type of anaerobic reactor suitable for segmented or whole rice straw is in line with the development trend of biogas projects in my country, and has good technical feasibility and application prospects. However, the key problem is to increase the fermentation concentration and effectively realize the uniform mass transfer effect, so as to achieve the purpose of improving the production rate of the project volume. In Chinese Patent No. 2011205315851, a van-type continuous feeding and discharging anaerobic digester is disclosed, and its publication date is July 18, 2012. The existing problems are as follows: 1. It is necessary to set a track inside the reactor to maintain the stability of the fermentation chamber, which requires a high level of construction of the fermentation system, and requires a high level of operation in the later operation and maintenance process, and the mass transfer effect is poor , obviously does not conform to the status quo of low level of operation and maintenance in rural areas. 2. This patent does not fully consider the material exchange between the fermentation liquid and the straw fermentation area, which makes the straw pile larger, which is not conducive to the penetration and material exchange of the fermentation liquid. In addition, the device does not have an effective design for the flow field inside the fermentation device, so that uniform creation cannot be better achieved, and there are many dead spots in the fermentation. In this case, it is easy to cause too much organic acid in the straw fermentation area, which cannot be discharged in time. At the same time, the anaerobic microorganisms in the fermentation liquid cannot get enough organic matter for metabolism, so that the gas production rate of the fermentation device is not high. .

In addition, in the straw biogas project in Germany, there is a "garage-style" two-phase fermentation process, a method of designing a spray port on the upper part of the fermentation device and a biogas blowing port at the bottom of the fermentation device, in order to achieve effective fermentation of straw materials and fermentation microorganisms. Contact, but after the straw is soaked, the piles are larger and the gravity is greater. It requires a lot of power to turn the straw, and it is difficult to turn it evenly, so it is difficult to achieve the purpose of uniform mixing.

Contents of the invention

The purpose of the present invention is to overcome the above-mentioned problems existing in the prior art, and provide a beehive-type straw fermentation system and a fermentation method thereof. The invention can effectively ensure sufficient contact between anaerobic microorganisms and straw, improve the fermentation concentration and gas production efficiency of the fermentation reactor, prevent the straw from floating and encrusting at the same time, realize smooth feeding and discharging of materials and simplify operation and maintenance, and do not require maintenance The straw is pretreated, which reduces the raw material pretreatment operation process of the straw project.

To achieve the above object, the technical scheme adopted in the present invention is as follows:

A beehive-type straw fermentation system, characterized in that it includes a fermentation device, a sealing cover is arranged on the fermentation device, the fermentation device and the sealing cover are watertightly matched, and a plurality of packing units directly filled with straw are arranged in the fermentation device, and the packing The top surface of the unit is located at the highest water level in the fermentation device, and the bottom surface of the packing unit is located at the lowest water level at the bottom of the fermentation device; the packing unit includes a straw filling area and a fermentation broth flow area at the end of the straw filling area. The front and back of the two adjacent packing units are arranged in the fermentation device, and the liquid baffle fermentation channel is formed in the fermentation device through the fermentation liquid flow area arranged in the front and back, and the liquid inlet end of the liquid baffle fermentation channel is connected with a liquid inlet pipeline. The liquid outlet is connected with a circulation pipeline.

The front and back of the two adjacent packing units are arranged in such a way that the water level of the fermentation broth flow area of one packing unit is at the highest water level, and the water level of the fermentation liquid flow area of the other packing unit is at the lowest water level.

The specific structure of the front and back of the two adjacent packing units is that the fermentation liquid flow area of one packing unit is located at the upper end of the straw filling area, and the fermentation liquid flow area of the other packing unit is located at the lower end of the straw filling area.

The straw filling area is composed of a feeding frame, and a bracket is arranged at the end of the feeding frame, and a fermented liquid flow area is formed by the bracket.

The inner wall of the fermentation device is provided with feed frame guide grooves for fixing the feed frame in the horizontal direction, and one feed frame is correspondingly provided with two feed frame guide grooves.

The length of the packing unit matches the length of the fermentation device. The overall weight of the packing unit is greater than the buoyancy of the straw. After one packing unit is fixed through two feeding frame guide grooves, the two fixed sides contact the inner wall of the fermentation device.

The fermentation system also includes a liquid storage tank, the liquid storage tank is connected to the liquid inlet pipeline and the circulation pipeline through a pipeline, a control valve is arranged on the pipeline, a liquid inlet pump is arranged on the liquid inlet pipeline, and a control valve is arranged on the circulation pipeline , the liquid storage tank is also connected with a liquid replenishing tube.

The top of the fermentation device is provided with a water-sealed weir, and the fermentation device is water-sealed with the sealing cover through the water-sealed weir. The space between the sealing cover and the highest water level forms a biogas storage area, and the sealing cover is provided with a biogas pipe.

The fermentation device is also provided with an overflow device, the overflow device includes an overflow pipe and an overflow tank connected with the overflow pipe, the liquid inlet end of the overflow pipe is matched with the highest water level line, and the overflow tank is connected to the Liquid storage pool.

A fermentation method of a honeycomb-type straw fermentation system, characterized in that: after the section-shaped straw or directly bundled whole straw is loaded into the straw filling area of the filler unit, the filler unit is put into the In the fermentation device, then hoist the sealing cover and cooperate with the water seal of the fermentation device, so that the fermentation device is in a sealed environment; connect the liquid inlet pipeline, disconnect the circulation pipeline, inject the fermentation liquid into the fermentation device, and control the fermentation liquid in the fermentation device. After the highest water level, disconnect the liquid inlet pipeline and connect the circulation pipeline, so that the fermentation liquid flows in the liquid baffle fermentation channel, the fermentation liquid forms a baffle in the fermentation device, and the fermentation liquid fully penetrates into the straw filling area, so that Biogas is produced by anaerobic digestion in the straw filling area.

The advantage of adopting the present invention is:

1. The present invention adopts the structure imitating the sealed beehive, which can effectively ensure the full contact between anaerobic microorganisms and straw, improve the fermentation concentration and gas production efficiency of the fermentation reactor, and prevent the straw from floating and encrusting at the same time, so as to realize the smooth feeding and discharging of materials and Simplify operation and maintenance.

2. By adopting the present invention, the effective contact area between the fermentation liquid and the straw fermentation area is enlarged, so that the organic matter can fully react with the straw material, and the biogas production efficiency of the fermentation device is improved. Through the left and right infiltration in the straw fermentation area, the organic matter produced by straw degradation is effectively taken away to the liquid area for fermentation, avoiding the accumulation of organic acids.

3. The liquid baffle fermentation channel formed by the present invention ensures that the fermented liquid forms a deflected flow in the fermentation device, and does not directly flow to the rear end of the fermentation device through the bottom of the feeding frame. The fermented liquid contains a large amount of effective anaerobic microorganisms, Through the baffle effect of the fermentation liquid arranged in the feeding frame, the contact area between the anaerobic microorganism and the fermented organic matter can be maximized; at the same time, the kinetic energy of the fermentation liquid flow can well overcome the impact of the straw filling area of the feeding frame on the fermentation liquid. Viscous resistance and inertial resistance of penetration enable the fermentation liquid to fully penetrate into the straw filling area of the feed frame for effective fermentation and gas production.

4. Adopt the present invention to make the fermentation liquid flow along the liquid baffle fermentation channel. During the fermentation process, the reflux and stirring of the fermentation liquid can be realized by opening the liquid inlet pump and connecting the circulation pipeline, so that the liquid baffles the fermentation liquid in the fermentation channel. With kinetic energy, it can drive the fermentation and the fermentation strains can effectively infiltrate the straw in the straw filling area, so that the fermentation liquid can be evenly transferred with the minimum energy input, and the repeated contact with the microbial strains and fermentation materials can be achieved. The best straw fermentation effect.

5. After adopting the present invention, the biogas produced by anaerobic digestion in the straw filling area can be effectively released through the liquid baffle fermentation channel, avoiding the problem of gas release blockage caused by too thick straw filling area.

6. In the present invention, the feeding frame guide groove is arranged on the inner wall of the fermentation device, which can ensure that the packing unit will not move in the horizontal direction after entering the fermentation device.

7. The feeding frame provided by the present invention mainly plays a role of controlling the overall harvesting of the straw, and at the same time enables the fermentation liquid to penetrate into the straw of the feeding frame.

Description of drawings

Fig. 1 is the cross-sectional structure schematic diagram of fermentation system of the present invention;

Fig. 2 is a top view structural schematic diagram of the fermentation system of the present invention.

The marks in the figure are: 1. Liquid storage tank; 2. Inlet pump; 3. Fermentation device; 4. Overflow device; 5. Water sealing weir; 6. Maximum water level line; 7. Sealing cover; 9. Biogas storage area; 10. Packing unit; 11. Straw filling area; 12. Liquid baffle fermentation channel; 13. Fermentation liquid flow area; 14. Circulation pipeline; Guide groove, 17, drain pipe.

detailed description

Example 1

A beehive-type straw fermentation system, comprising a fermentation device 3, a sealing cover 7 is arranged on the fermentation device 3, the fermentation device 3 and the sealing cover 7 are water-tightly matched, and a plurality of packing units directly filled with straw are arranged in the fermentation device 3 10. The top surface of the packing unit 10 is located at the highest water level in the fermentation device 3, and the bottom surface of the packing unit 10 is located at the lowest water level at the bottom of the fermentation device 3; the packing unit 10 includes a straw filling area 11 and is located in the straw filling area. The fermented liquid flow area 13 at the end of 11, two adjacent packing units 10 are arranged in the fermentation device 3 front and back, and the liquid baffle fermentation channel 12 is formed in the fermentation device 3 through the fermented liquid flow area 13 arranged in the front and back, The liquid inlet end of the liquid baffle fermentation channel 12 is connected with a liquid inlet pipeline, and the liquid outlet end is connected with a circulation pipeline 14 .

In this embodiment, the front and back of the two adjacent packing units 10 are arranged in such a way that the water level line of the fermentation broth flow area 13 of one packing unit 10 is located at the highest water level line 6, and the fermentation liquid flow area of the other packing unit 10 The water mark of 13 is located at the lowest water mark.

In this embodiment, the specific structure of the front and back of the two adjacent packing units 10 is that the fermentation liquid overflow area 13 of one packing unit 10 is located at the upper end of the straw filling area 11, and the fermentation liquid overflow area 13 of the other packing unit 10 Zone 13 is located at the lower end of straw filling zone 11 .

In this embodiment, the straw filling area 11 is composed of a feed frame, and a bracket is provided at the end of the feed frame, and the fermentation liquid flow area 13 is formed by the bracket.

In this embodiment, the inner wall of the fermentation device 3 is provided with a feed frame guide groove 16 for fixing the feed frame in the horizontal direction, and one feed frame is correspondingly provided with two feed frame guide grooves 16 .

In this embodiment, the length of the packing unit 10 matches the length of the fermentation device 3. The overall weight of the packing unit 10 is greater than the buoyancy of the straw. The side is in contact with the inner wall of the fermentation device 3 .

In this embodiment, the fermentation system further includes a liquid storage tank 1, the liquid storage tank 1 is connected to the liquid inlet pipeline and the circulation pipeline 14 through a pipeline, a control valve is arranged on the pipeline, and a liquid inlet pump is arranged on the liquid inlet pipeline 2. A control valve is provided on the circulation pipeline 14, and the liquid storage tank 1 is also connected with a liquid replenishment pipe 15.

In this embodiment, the top of the fermentation device 3 is provided with a water-sealed weir 5, and the fermentation device 3 is water-tightly matched with the sealing cover 7 through the water-sealed weir 5, and the space between the sealing cover 7 and the highest water level line 6 forms a biogas storage area 9. A biogas pipe 8 is provided on the sealing cover 7 .

In this embodiment, the lower part of the fermentation device 3 is provided with a liquid discharge pipe 17. After the fermentation device 3 has been fermented for a period of time, the fermentation liquid of the fermentation device 3 can be discharged through the communication liquid discharge pipe 17, and the fermentation liquid can be replaced to avoid the accumulation of harmful substances. .

In this embodiment, the fermentation device 3 is also provided with an overflow device 4, the overflow device 4 includes an overflow pipe and an overflow tank connected with the overflow pipe, and the liquid inlet end of the overflow pipe is connected to the highest water level line 6 In cooperation, the overflow tank is connected to the liquid storage tank 1 through a pipeline.

A fermentation method of a honeycomb-type straw fermentation system, comprising: after putting segmented straw or directly bundled whole straw into the straw filling area of a packing unit, pressing the packing unit according to the guidance of the guide groove of the feeding frame Put it into the fermentation device in a reverse way, then hoist the sealing cover and cooperate with the water seal of the fermentation device, so that the fermentation device is in a sealed environment; connect the liquid inlet pipeline, disconnect the circulation pipeline, inject fermentation liquid into the fermentation device, and control the fermentation After the fermentation liquid in the device is at the highest water level, disconnect the liquid inlet pipeline and connect the circulation pipeline, so that the fermentation liquid flows in the baffle fermentation channel, and the fermentation liquid forms a baffle in the fermentation device to expand the contact between the fermentation liquid and the straw area, so that the fermentation broth can fully penetrate into the straw filling area, and take away the soluble organic matter produced by degradation in the straw filling area, so that the straw filling area can be anaerobically digested to produce biogas.

Example 2

This embodiment further illustrates the present invention in conjunction with the accompanying drawings.

As shown in FIGS. 1 and 2 , the fermentation device 3 of the honeycomb straw fermentation system is mainly composed of a packing unit 10 , a sealing cover 7 and a liquid baffle fermentation channel 12 . Filling unit 10 includes straw filling area 11 and fermented liquid flow area 13 located at the end of straw filling area 11. The straw filling area is composed of feeding frame, and the inner wall of fermentation device 3 is provided with feeding frame guide groove 16 to ensure After the feeding frame enters the fermentation device 3, it will not move in the horizontal direction. The feeding frame is composed of steel bars, which mainly controls the overall harvesting of the straw, and at the same time enables the fermentation liquid to penetrate into the straw of the feeding frame. The overall weight of the filler unit 10 is greater than the buoyancy of the straw, so that the filler unit 10 always sinks to the bottom after entering the fermentation device 3 .

Segmented or directly bundled whole plant straw (the process of reducing the size of the straw, such as crushing and kneading, is omitted, and feeding devices such as pumps and screw feeders are not used), after being loaded into the feeding frame, follow the steps shown in Figure 1. According to the arrangement method shown, one positive and one reverse are put into the fermentation device 3 according to the guidance of the feeding frame guide groove 16. Then lift the sealing cover 7 into the water sealing weir 5, and then add water in the water sealing weir 5, so that the whole fermentation system is in a sealed environment. A biogas pipe 8 is arranged on the sealing cover 7 to discharge the biogas produced by anaerobic digestion.

Inject the fermentation liquid into the liquid storage tank 1, disconnect the circulation pipe 14, connect the liquid replenishment pipe 15, turn on the liquid inlet pump 2, and fill the fermentation device 3 with the fermentation liquid. An overflow device 4 is arranged on the upper part of the fermentation device 3 to realize effective control of the highest water level line 6 . The highest point after the packing unit 10 is put into the fermentation device 3 is the highest water level 6 of the fermentation broth. Afterwards, disconnect the liquid replenishment pipe 15, communicate with the circulation line 14, and turn on the liquid inlet pump 2, so that the fermented liquid can flow in the liquid baffled fermentation channel 12, thereby ensuring that the fermented liquid forms a deflected flow in the fermentation device 3 without Directly flow to the rear end of the fermentation device 3 through the bottom of the feeding frame. The fermentation broth contains a large number of effective anaerobic microorganisms, and the arrangement of the packing unit 10 can maximize the contact area between the anaerobic microorganisms and the fermented organic matter through the reflux of the fermentation liquor. At the same time, the kinetic energy of the fermentation liquid flow can well overcome the viscous resistance and inertial resistance of the straw filling area 11 of the packing unit 10 to the fermentation liquid penetration, so that the fermentation liquid can fully penetrate into the straw filling area 11 of the packing unit 10 for efficient fermentation.

The biogas generated by the anaerobic digestion in the straw filling area 11 can be effectively released through the liquid baffle fermentation channel 12, which avoids the gas release blockage caused by the excessive thickness of the straw filling area 11. After the fermentation is completed, disconnect the biogas pipe 8, remove the sealing cover 7, then take out the packing unit 10 after fermentation, replace and fill with new straw, and then repeat the above sealing to complete the feeding and discharging of the reactor, and reconnect the biogas Pipe 8, you can start anaerobic digestion to produce biogas.

During the fermentation process, the reflux and stirring of the fermentation liquid can be realized by turning on the liquid inlet pump 2 and connecting the circulation pipeline 14, so that the fermentation liquid in the liquid deflection fermentation channel 12 has kinetic energy, and the fermentation and fermentation bacteria are effectively filled into the straw. The straw in the loading area 11 is infiltrated, so that the fermentation liquid can be evenly transferred with the minimum energy input, and the repeated contact with microbial strains and fermentation materials can be achieved to achieve the best straw fermentation effect.

The specific embodiments above are used to explain the present invention, rather than to limit the present invention. Within the spirit of the present invention and the protection scope of the claims, any modification and change made to the present invention will fall into the protection scope of the present invention.

Claims (10)

1. a kind of honeybee van-type stalk fermentation system, it is characterised in that：Including installation for fermenting（3）, installation for fermenting（3）On be provided with it is close Capping（7）, installation for fermenting（3）With closure（7）Water-stop coordinates, installation for fermenting（3）Inside it is provided with multiple directly filling stalks Filler unit（10）, filler unit（10）Top surface be located at installation for fermenting（3）Interior maximum water level（6）Place, filler unit （10）Bottom surface be located at installation for fermenting（3）At the lowest water level line of bottom；Filler unit（10）Including stalk filling area（11）With Positioned at stalk filling area（11）The zymotic fluid excessively stream area of end（13）, adjacent two filler unit（10）It is positive and negative to be arranged on installation for fermenting （3）It is interior, by the zymotic fluid excessively stream area of positive and negative setting（13）In installation for fermenting（3）Interior formation liquid baffling fermentation passage（12）, Liquid baffling fermentation passage（12）Liquid feeding end be connected with water influent pipeline, outlet end is connected with circulation line（14）.

2. honeybee van-type stalk fermentation system according to claim 1, it is characterised in that：Adjacent two filler unit（10） Positive and negative set-up mode is, a filler unit（10）Zymotic fluid excessively stream area（13）Waterline be located at maximum water level（6）, separately One filler unit（10）Zymotic fluid excessively stream area（13）Waterline be located at lowest water level line.

3. honeybee van-type stalk fermentation system according to claim 2, it is characterised in that：Adjacent two filler unit（10） The concrete structure of positive and negative setting is, a filler unit（10）Zymotic fluid excessively stream area（13）Positioned at stalk filling area（11）On End, another filler unit（10）Zymotic fluid excessively stream area（13）Positioned at stalk filling area（11）Lower end.

4. the honeybee van-type stalk fermentation system according to claim 1,2 or 3, it is characterised in that：The stalk filling area （11）Constituted by entering material frame, enter material frame end and be provided with support, zymotic fluid excessively stream area is formed by support（13）.

5. honeybee van-type stalk fermentation system according to claim 4, it is characterised in that：The installation for fermenting（3）On inwall Be provided with the horizontal direction it is fixed enter material frame enter material frame guide groove（16）, one is entered material frame and is correspondingly arranged two and enters material frame to lead Groove（16）.

6. honeybee van-type stalk fermentation system according to claim 5, it is characterised in that：Described filler unit（10）Length With installation for fermenting（3）Length be adapted, filler unit（10）Overall weight more than stalk buoyancy, a filler unit （10）Enter material frame guide groove by two（16）Two fixing sides and installation for fermenting after fixation（3）Inwall is in contact.

7. honeybee van-type stalk fermentation system according to claim 6, it is characterised in that：The fermentation system also includes liquid Storage pool（1）, liquid reservoirs（1）By pipeline and water influent pipeline and circulation line（14）Connection, is provided with control on pipeline Valve, is provided with liquid feeding pump in water influent pipeline（2）, circulation line（14）On be provided with control valve, liquid reservoirs（1）It is also associated with Liquid supplementation pipe（15）.

8. honeybee van-type stalk fermentation system according to claim 7, it is characterised in that：The installation for fermenting（3）Top sets It is equipped with water seal weir（5）, installation for fermenting（3）By water seal weir（5）With closure（7）Water-stop coordinates, closure（7）With highest water Bit line（6）Between space form biogas storage area（9）, closure（7）On be provided with biogas pipe（8）.

9. honeybee van-type stalk fermentation system according to claim 8, it is characterised in that：The installation for fermenting（3）On also set It is equipped with overflow mechanism（4）, overflow mechanism（4）The overflow launder being connected including overflow pipe and with overflow pipe, the liquid feeding end of overflow pipe with Maximum water level（6）Coordinate, overflow launder is connected to liquid reservoirs by pipeline（1）.

10. the fermentation process of honeybee van-type stalk fermentation system according to claim 1, it is characterised in that：Section shape stalk or After the whole strain stalk of the direct bundling of person loads the stalk filling area of filler unit, filler unit is put into the way of a positive and a negative In installation for fermenting, then lift closure and coordinate with installation for fermenting water-stop, installation for fermenting is in sealed environment；Connection feed liquor Pipeline, disconnects circulation line, and zymotic fluid is injected in installation for fermenting, and the zymotic fluid in control installation for fermenting is in maximum water level Afterwards, water influent pipeline is disconnected, communication loop pipeline makes zymotic fluid be flowed in liquid baffling fermentation passage, and zymotic fluid is filled in fermentation Interior formation baffling is put, zymotic fluid fully penetrates into stalk filling area, make stalk filling area anaerobic digestion methane production.