A device system for segmented anaerobic-aerobic combined reaction and application thereof

Abstract

The application provides a device system for segmented anaerobic and aerobic combined reaction and application thereof, and the device system comprises an acidification hydrolysis fermentation unit, a solid-liquid separation unit, an anaerobic methane production fermentation unit and an aerobic fermentation unit; the acidification hydrolysis fermentation unit, the solid-liquid separation unit and the anaerobic methane production fermentation unit are sequentially connected through pipelines; and the aerobic fermentation unit is connected to a slag outlet of the solid-liquid separation unit through a conveyor belt. The device system provided by the application has the functions of anaerobic fermentation and aerobic fermentation, is particularly suitable for resource treatment of blue-green algae and reed straws, and realizes resource treatment of blue-green algae straws by combining the physicochemical properties of blue-green algae and reed straws, the methane production characteristics of anaerobic fermentation and the advantages of aerobic fermentation after dewatering of biogas residues, so that efficient reuse of blue-green algae and reed straws is realized, the treatment efficiency and the gas production rate are improved, and stable operation of the system is ensured.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of chemical devices, and relates to a segmented anaerobic-aerobic combined reactor, in particular to a segmented anaerobic-aerobic combined reactor device system and application thereof. BACKGROUND

[0002] In recent years, with the aggravation of eutrophication of some lakes in China and the promotion of lake management projects, the amount of cyanobacteria salvaged and the amount of aquatic plants harvested increase year by year. Cyanobacteria not only causes water quality deterioration and destroys the water ecosystem, but also releases algal toxins to threaten the safety of daily drinking water and public health. If the aquatic plants (such as reed straw) regularly harvested in the lake project cannot be treated in time, it will also cause secondary pollution to the environment and waste of resources.

[0003] Accelerating the centralized treatment of cyanobacteria and the resource utilization of aquatic plants can not only solve the problem of energy shortage, but also avoid environmental pollution problems, and has broad development and application prospects. Biogas as a renewable energy not only realizes the resource utilization of organic waste, but also avoids environmental pollution problems, and has attracted widespread attention at home and abroad.

[0004] However, using the traditional anaerobic fermentation device to dispose of cyanobacteria and reed straw is prone to unstable gas production, low efficiency at low temperature, high heating cost, incomplete disposal of biogas residue, ammonia inhibition and accumulation of propionic acid, which will lead to unstable operation of the system, and such anaerobic fermentation device is not suitable for aerobic fermentation, and the function is relatively single, so there is still a large improvement space.

[0005] Therefore, how to provide a segmented anaerobic-aerobic combined reactor device system, which is particularly suitable for resource treatment of cyanobacteria and reed straw, combines the physicochemical properties of cyanobacteria and reed straw, the characteristics of anaerobic fermentation for methane production, and the advantages of aerobic fermentation after dewatering of biogas residue to realize efficient reuse of cyanobacteria and reed straw, improve the treatment efficiency and gas production rate, and ensure stable operation of the system, has become an urgent problem for the technical personnel in the field. SUMMARY

[0006] The present application provides a segmented anaerobic-aerobic combined reactor device system and application thereof, which combines the functions of anaerobic fermentation and aerobic fermentation, is particularly suitable for resource treatment of cyanobacteria and reed straw, combines the physicochemical properties of cyanobacteria and reed straw, the characteristics of anaerobic fermentation for methane production, and the advantages of aerobic fermentation after dewatering of biogas residue to realize efficient reuse of cyanobacteria and reed straw, improve the treatment efficiency and gas production rate, and ensure stable operation of the system.

[0007] To achieve the purpose of the present application, the following technical solutions are adopted:

[0008] In a first aspect, the present application provides a device system for segmented anaerobic and aerobic fermentation, which comprises an acidification and hydrolysis fermentation unit, a solid-liquid separation unit, an anaerobic methane production fermentation unit and an aerobic fermentation unit.

[0009] The acidification and hydrolysis fermentation unit, the solid-liquid separation unit and the anaerobic methane production fermentation unit are sequentially connected by pipelines; and the aerobic fermentation unit is connected to the slag outlet of the solid-liquid separation unit by a conveyor belt.

[0010] The device system provided by the present application has an anaerobic methane production fermentation unit and an aerobic fermentation unit, thereby taking into account the functions of anaerobic fermentation and aerobic fermentation; the anaerobic methane production fermentation unit can make full use of the methane gas produced by anaerobic fermentation, while reducing the emission of greenhouse gases, thereby having the dual advantages of environmental protection and economic benefits; the aerobic fermentation unit can promote the aerobic decomposition and mineralization of organic matter, and ultimately obtain high-quality organic fertilizer products, thereby improving the efficiency and value of resource utilization. Meanwhile, the solid-liquid separation unit can effectively separate biogas residue and biogas slurry, thereby facilitating further processing and resource utilization.

[0011] Therefore, the device system provided by the present application is particularly suitable for resource treatment of blue-green algae and reed straw, and the resource treatment of blue-green algae straw is carried out in combination with the physicochemical properties of blue-green algae and reed straw, the characteristics of anaerobic fermentation for methane production and the advantages of aerobic fermentation after dewatering of biogas residue, thereby realizing efficient reuse of blue-green algae and reed straw, improving the treatment efficiency and gas production rate and ensuring stable operation of the system.

[0012] Preferably, the acidification and hydrolysis fermentation unit comprises an acidification and hydrolysis fermentation tank.

[0013] Preferably, the height-diameter ratio of the acidification and hydrolysis fermentation tank is (2-2.5):1, for example, it can be 2:1, 2.1:1, 2.2:1, 2.3:1, 2.4:1 or 2.5:1, but is not limited to the listed values, and other values not listed in this range are also applicable.

[0014] Preferably, the tank body and the tank cover of the acidification and hydrolysis fermentation tank are connected by threads.

[0015] Preferably, the tank cover of the acidification and hydrolysis fermentation tank is provided with an exhaust port at the edge.

[0016] Preferably, the acidification and hydrolysis fermentation tank is provided with a variable-speed stirrer in the center of the tank cover, and the stirring rod and paddle of the stirrer are located in the center of the tank body.

[0017] Preferably, the upper part of the tank body of the acidification and hydrolysis fermentation tank is provided with a feed inlet.

[0018] Preferably, the lower part of the tank body of the acid hydrolysis fermentation tank is provided with a sampling port.

[0019] Preferably, the bottom of the acid hydrolysis fermentation tank is conical, and the bottom is provided with a discharge port.

[0020] Preferably, the outer wall of the tank body of the acid hydrolysis fermentation tank is sequentially provided with a heating layer and a heat preservation layer from inside to outside.

[0021] Preferably, the inside of the solid-liquid separation unit is provided with a separation net.

[0022] Preferably, the pipeline connection port between the acid hydrolysis fermentation unit and the solid-liquid separation unit is located at the lower part of the separation net.

[0023] Preferably, the pipeline connection port between the solid-liquid separation unit and the anaerobic methane fermentation unit is located at the upper part of the separation net.

[0024] Preferably, the pipelines between the acid hydrolysis fermentation unit and the solid-liquid separation unit and between the solid-liquid separation unit and the anaerobic methane fermentation unit are respectively independently provided with valves.

[0025] Preferably, the top of the solid-liquid separation unit is provided with a one-way exhaust hole.

[0026] Preferably, the bottom of the solid-liquid separation unit is conical, and the bottom is provided with a slag discharge port.

[0027] Preferably, the anaerobic methane fermentation unit comprises an anaerobic methane fermentation tank.

[0028] Preferably, the height-diameter ratio of the anaerobic methane fermentation tank is (3.5-4):1, for example, it can be 3.5:1, 3.6:1, 3.7:1, 3.8:1, 3.9:1 or 4:1, but is not limited to the listed values, and other values not listed in this range are also applicable.

[0029] Preferably, the tank body and the tank cover of the anaerobic methane fermentation tank are connected through a flange.

[0030] Preferably, the edge of the tank cover of the anaerobic methane fermentation tank is provided with a methane collection port.

[0031] Preferably, the central part of the tank cover of the anaerobic methane fermentation tank is provided with a variable-speed stirrer, and the stirring rod and paddle of the stirrer are located in the central part of the tank body.

[0032] Preferably, the bottom of the anaerobic methane fermentation tank is conical, and the bottom is provided with a liquid discharge port.

[0033] Preferably, the outer wall of the tank body of the anaerobic methane fermentation tank is sequentially provided with a heating layer and a heat preservation layer from inside to outside.

[0034] Preferably, the aerobic fermentation unit comprises a horizontal aerobic fermentation tank.

[0035] Preferably, the top of the horizontal aerobic fermentation tank is provided with a feeding hopper, and the feeding hopper is connected to the slag outlet of the solid-liquid separation unit through a conveyor belt.

[0036] Preferably, the side end of the horizontal aerobic fermentation tank is provided with a variable-speed stirrer, and the stirring rod and paddle of the stirrer are located in the central part of the tank body.

[0037] In the present application, the central part of the tank cover of the acid hydrolysis fermentation tank, the central part of the tank cover of the anaerobic methane-producing fermentation tank, and the side end of the horizontal aerobic fermentation tank are respectively independently provided with a variable-speed stirrer, and the stirring rod and paddle of the stirrer are located in the central part of the tank body, so that the stirring speed can be adjusted according to the different stages and characteristics of the materials during the reaction, thereby significantly improving the reaction efficiency and effect.

[0038] In the second aspect, the present application provides an application of the device system as described in the first aspect, which is used for the resource treatment of cyanobacteria and reed straw.

[0039] Preferably, in the resource treatment process, the inoculum liquid added into the acid hydrolysis fermentation unit is a bacterial liquid obtained by culturing the anaerobic fermentation liquid in an aerobic acid-producing bacterial culture medium, an anaerobic acid-producing bacterial culture medium, and an anaerobic cellulose-degrading bacterial culture medium, and the bacterial liquid added into the anaerobic methane-producing fermentation unit is a bacterial liquid obtained by culturing the anaerobic fermentation liquid in a methane-producing culture medium.

[0040] The numerical range of the present application includes not only the point values exemplified above, but also any point values between the above numerical ranges that are not exemplified. Due to the limited space and for the sake of simplicity, the present application does not exhaustively list the specific point values included in the range.

[0041] Compared with the prior art, the present application has the following beneficial effects:

[0042] (1) The device system provided by the present application has an anaerobic methane-producing fermentation unit and an aerobic fermentation unit, thereby taking into account the functions of anaerobic fermentation and aerobic fermentation; the anaerobic methane-producing fermentation unit can make full use of the methane gas produced by anaerobic fermentation, while reducing the emission of greenhouse gases, thereby having the dual advantages of environmental protection and economic benefits; the aerobic fermentation unit can promote the aerobic decomposition and mineralization of organic matter, and ultimately obtain high-quality organic fertilizer products, thereby improving the efficiency and value of resource utilization; at the same time, the solid-liquid separation unit can effectively separate the biogas residue and biogas liquid, thereby facilitating further processing and resource utilization.

[0043] (2) The device system provided by the application is particularly suitable for resource treatment of blue-green algae and reed straws, and the resource treatment of blue-green algae and reed straws is carried out by combining the physical and chemical properties of blue-green algae and reed straws, the characteristics of anaerobic fermentation to produce methane, and the advantages of aerobic fermentation after dewatering of biogas residue, so that efficient reuse of blue-green algae and reed straws is realized, the treatment efficiency and the gas production rate are improved, and stable operation of the system is ensured. BRIEF DESCRIPTION OF DRAWINGS

[0044] Figure 1 is a structural schematic diagram of the device system of the segmented anaerobic and aerobic combined reaction provided by the application.

[0045] In the drawings: 10 is an acidification and hydrolysis fermentation tank; 11 is an exhaust port; 12 is a feeding port; 13 is a sampling port; 14 is a discharging port; 20 is a solid-liquid separation tank; 21 is a separation net; 22 is a one-way exhaust hole; 23 is a residue discharging port; 30 is an anaerobic methane-producing fermentation tank; 31 is a methane collecting port; 32 is a liquid discharging port; 40 is a horizontal aerobic fermentation tank; 41 is a feeding hopper; 50 is a conveying belt; 60 is a variable-speed stirrer; 70 is a heating layer; 80 is a heat preservation layer; and 90 is a valve. DETAILED DESCRIPTION

[0046] The technical solutions of the application will be further described below through specific embodiments. Those skilled in the art should understand that the embodiments are only used to help understand the application and should not be regarded as specific limitations on the application.

[0047] Embodiment 1

[0048] This embodiment provides a device system for segmented anaerobic and aerobic combined reaction, as shown in the drawing, the device system comprises an acidification and hydrolysis fermentation tank 10, a solid-liquid separation tank 20, an anaerobic methane-producing fermentation tank 30, and a horizontal aerobic fermentation tank 40. Figure 1 In the drawings: 10 is an acidification and hydrolysis fermentation tank; 11 is an exhaust port; 12 is a feeding port; 13 is a sampling port; 14 is a discharging port; 20 is a solid-liquid separation tank; 21 is a separation net; 22 is a one-way exhaust hole; 23 is a residue discharging port; 30 is an anaerobic methane-producing fermentation tank; 31 is a methane collecting port; 32 is a liquid discharging port; 40 is a horizontal aerobic fermentation tank; 41 is a feeding hopper; 50 is a conveying belt; 60 is a variable-speed stirrer; 70 is a heating layer; 80 is a heat preservation layer; and 90 is a valve.

[0049] In this embodiment, the height-diameter ratio of the acidification and hydrolysis fermentation tank 10 is 2.2:1, and the tank body and the tank cover are connected through threads; the tank cover edge is provided with an exhaust port 11, the tank cover center is provided with a variable-speed stirrer 60, and the stirring rod and paddle of the stirrer are located in the central part of the tank body; the upper part of the tank body is provided with a feeding port 12, the lower part of the tank body is provided with a sampling port 13, the bottom is conical, and the bottom is provided with a discharging port 14; the outer wall of the tank body is sequentially provided with a heating layer 70 and a heat preservation layer 80 from inside to outside.

[0050] In the embodiment, the inside of the solid-liquid separation tank 20 is provided with a separation net 21; the pipeline connection port between the acidification and hydrolysis fermentation tank 10 and the solid-liquid separation tank 20 is located at the lower part of the separation net 21, and the pipeline connection port between the solid-liquid separation tank 20 and the anaerobic methane production fermentation tank 30 is located at the upper part of the separation net 21; the pipelines between the acidification and hydrolysis fermentation tank 10 and the solid-liquid separation tank 20 and between the solid-liquid separation tank 20 and the anaerobic methane production fermentation tank 30 are respectively independently provided with valves 90; the top of the solid-liquid separation tank 20 is provided with a one-way exhaust hole 22, the bottom is conical, and the bottom is provided with a slag outlet 23.

[0051] In the embodiment, the height-diameter ratio of the anaerobic methane production fermentation tank 30 is 3.6:1, the tank body and the tank cover are connected through a flange; the tank cover edge is provided with a methane collection port 31, the tank cover center is provided with a variable speed type stirrer 60, and the stirring rod and paddle of the stirrer are located in the inside center of the tank body; the bottom is conical, and the bottom is provided with a liquid outlet 32; the tank body outer wall is sequentially provided with a heating layer 70 and a heat preservation layer 80 from inside to outside.

[0052] In the embodiment, the top of the horizontal aerobic fermentation tank 40 is provided with a feeding hopper 41, and the feeding hopper 41 is connected to the slag outlet 23 of the solid-liquid separation tank 20 through a conveying belt 50; the side end of the horizontal aerobic fermentation tank 40 is provided with a variable speed type stirrer 60, and the stirring rod and paddle of the stirrer are located in the inside center of the tank body.

[0053] In the embodiment, the acidification and hydrolysis fermentation tank 10, the solid-liquid separation tank 20, the anaerobic methane production fermentation tank 30 and the horizontal aerobic fermentation tank 40 are all made of corrosion-resistant stainless steel material.

[0054] Embodiment 2

[0055] The embodiment provides a segmented anaerobic and aerobic combined reaction device system, wherein the height-diameter ratio of the acidification and hydrolysis fermentation tank 10 is changed to 2:1, the height-diameter ratio of the anaerobic methane production fermentation tank 30 is changed to 3.5:1, and the rest of the structures and conditions are the same as those in Embodiment 1, so the details are not repeated here.

[0056] Embodiment 3

[0057] The embodiment provides a segmented anaerobic and aerobic combined reaction device system, wherein the height-diameter ratio of the acidification and hydrolysis fermentation tank 10 is changed to 2.5:1, the height-diameter ratio of the anaerobic methane production fermentation tank 30 is changed to 4:1, and the rest of the structures and conditions are the same as those in Embodiment 1, so the details are not repeated here.

[0058] Application Example 1

[0059] The application example adopts the device system provided in Embodiment 1 to carry out resource treatment of blue-green algae and reed straw, and specifically includes the following steps:

[0060] (1) The dehydrated blue-green algae with a water content of 85% is mixed with crushed reed straw, and then water is added to adjust the water content of the mixture to 90%;

[0061] (2) The mixture is pumped into the acid hydrolysis fermentation tank 10, the pump-in volume is controlled to be 80% of the tank volume, the inoculated bacteria solution is added, nitrogen gas is introduced into the tank for 1 hour, and all valves 90 are closed for acid hydrolysis fermentation;

[0062] (3) When the pH value of the fermentation material in step (2) is lower than 6.5, and the volume content of acetic acid is more than 70%, the valve 90 and the exhaust port 11 are opened, the biogas slurry in the acid hydrolysis fermentation tank 10 enters the solid-liquid separation tank 20 through the pipeline, and the separated biogas slurry enters the anaerobic methane fermentation tank 30 through the isolation net 21, the bacteria solution is added, and the nitrogen gas is introduced for 1 hour for methane fermentation;

[0063] (4) The separated biogas residue falls into the conveying belt 50 through the residue outlet 23, and is conveyed to the horizontal aerobic fermentation tank 40, and the aerobic fermentation bacteria agent is added for aerobic fermentation;

[0064] (5) The produced methane is collected through the methane collection port 31, and the finished organic fertilizer is collected through the horizontal aerobic fermentation tank 40.

[0065] In step (2), the inoculated bacteria solution is the bacteria solution obtained by enriching the anaerobic fermentation liquid in the aerobic acid-producing bacteria culture medium, the anaerobic acid-producing bacteria culture medium and the anaerobic cellulose-degrading bacteria culture medium; and in step (3), the bacteria solution is the bacteria solution obtained by enriching the anaerobic fermentation liquid in the methane-producing culture medium.

[0066] Application Example 2

[0067] In this application example, the device system provided in Example 2 is used for resource treatment of blue-green algae and reed straw, and the specific steps are the same as those in Application Example 1, so they are not repeated here.

[0068] Application Example 3

[0069] In this application example, the device system provided in Example 3 is used for resource treatment of blue-green algae and reed straw, and the specific steps are the same as those in Application Example 1, so they are not repeated here.

[0070] The results show that the resource treatment provided in Application Examples 1-3 is continuously fermented for 10 days, the running state is stable, and finally the blue-green algae and reed straw are fully fermented, and the low-value biomass is converted into high-value methane gas and finished organic fertilizer.

[0071] Therefore, the device system has anaerobic methane production fermentation units and aerobic fermentation units, so that the functions of anaerobic fermentation and aerobic fermentation are taken into account; the anaerobic methane production fermentation units can make full use of the methane gas produced by anaerobic fermentation, while reducing the emission of greenhouse gases, having the dual advantages of environmental protection and economic benefits; the aerobic fermentation units can promote the aerobic decomposition and mineralization of organic matter, and ultimately obtain high-quality organic fertilizer products, improving the efficiency and value of resource utilization; at the same time, the solid-liquid separation unit can effectively separate the biogas residue and biogas slurry, facilitating further processing and resource utilization.

[0072] In addition, the device system is particularly suitable for resource treatment of blue-green algae and reed straw, and the resource treatment of blue-green algae and reed straw is carried out in combination with the physicochemical properties of blue-green algae and reed straw, the characteristics of anaerobic fermentation and methane production, and the advantages of aerobic fermentation after dewatering of biogas residue, so that the efficient reuse of blue-green algae and reed straw is realized, the treatment efficiency and gas production rate are improved, and the stable operation of the system is ensured.

[0073] The applicant declares that the above description is only a specific embodiment of the present application, but the protection scope of the present application is not limited thereto, and those skilled in the art should understand that any changes or replacements within the technical scope disclosed by the present application can be easily thought of by any person skilled in the art, and all fall within the protection scope and disclosure scope of the present application.

Claims

1. A method for the resource utilization of cyanobacteria and reed straw using a segmented anaerobic-aerobic combined reaction device system, characterized in that, The resource recovery method includes the following steps: (1) After mixing the dehydrated blue-green algae with a moisture content of 85% with the crushed reed straw evenly, add water to adjust the moisture content of the mixture to 90%; (2) Pump the mixture into the acidification hydrolysis fermentation tank, control the pumping volume to be 80% of the volume of the acidification hydrolysis fermentation tank, add the inoculum liquid, and then purge nitrogen into the tank for 1 hour. Close all valves to carry out acidification hydrolysis fermentation. (3) When the pH value of the fermentation material in step (2) is lower than 6.5 and the volume content of acetic acid reaches more than 70%, open the valve and exhaust port. The biogas slurry in the acidified hydrolysis fermentation tank enters the solid-liquid separation tank through the pipeline. The biogas slurry separated by the isolation net enters the anaerobic methanogenic fermentation tank. Add bacterial liquid and introduce nitrogen gas for 1 hour to carry out methanogenic fermentation. (4) The separated biogas residue falls into the conveyor belt through the slag outlet and is then transported to the horizontal aerobic fermentation tank. Aerobic fermentation is carried out after adding aerobic fermentation agent. (5) Collect the produced methane through the methane collection port, and collect the finished organic fertilizer through the horizontal aerobic fermentation tank; Wherein, the inoculated bacterial solution in step (2) is the bacterial solution obtained by culturing and enriching the anaerobic fermentation broth in aerobic acid-producing bacteria culture medium, anaerobic acid-producing bacteria culture medium and anaerobic cellulose-degrading bacteria culture medium; the bacterial solution in step (3) is the bacterial solution obtained by culturing and enriching the anaerobic fermentation broth in methanogenic culture medium. The segmented anaerobic-aerobic combined reaction device system includes an acidification hydrolysis fermentation unit, a solid-liquid separation unit, an anaerobic methanogenic fermentation unit, and an aerobic fermentation unit. The acidification hydrolysis fermentation unit, solid-liquid separation unit, and anaerobic methanogenic fermentation unit are connected in sequence by pipelines; the aerobic fermentation unit is connected to the slag outlet of the solid-liquid separation unit by a conveyor belt.

2. The method for resource-based treatment of cyanobacteria and reed straw using a segmented anaerobic-aerobic combined reaction device system according to claim 1, characterized in that, The acidification hydrolysis fermentation unit includes an acidification hydrolysis fermentation tank.

3. The method for resource-based treatment of cyanobacteria and reed straw using a segmented anaerobic-aerobic combined reaction device system according to claim 2, characterized in that, The height-to-diameter ratio of the acidification hydrolysis fermentation tank is (2-2.5):

1.

4. The method for resource-based treatment of cyanobacteria and reed straw using a segmented anaerobic-aerobic combined reaction device system according to claim 2, characterized in that, The tank body and the tank cover of the acidification hydrolysis fermentation tank are connected by threads.

5. The method for resource-based treatment of cyanobacteria and reed straw using a segmented anaerobic-aerobic combined reaction device system according to claim 4, characterized in that, The acidification hydrolysis fermentation tank has an exhaust port on the edge of the tank lid.

6. The method for resource-based treatment of cyanobacteria and reed straw using a segmented anaerobic-aerobic combined reaction device system according to claim 5, characterized in that, The acidification hydrolysis fermentation tank has a variable speed stirrer in the center of the tank lid, and the stirring rod and blades of the stirrer are located in the center of the tank body.

7. The method for resource-based treatment of cyanobacteria and reed straw using a segmented anaerobic-aerobic combined reaction device system according to claim 2, characterized in that, The acidification hydrolysis fermentation tank is equipped with a feed inlet at the top of the tank body.

8. The method for resource-based treatment of cyanobacteria and reed straw using a segmented anaerobic-aerobic combined reaction device system according to claim 7, characterized in that, The acidification hydrolysis fermentation tank is equipped with a sampling port at the bottom of the tank body.

9. The method for resource-based treatment of cyanobacteria and reed straw using a segmented anaerobic-aerobic combined reaction device system according to claim 7, characterized in that, The bottom of the acidification hydrolysis fermentation tank is conical, and a discharge port is provided at the bottom.

10. The method for resource-based treatment of cyanobacteria and reed straw using a segmented anaerobic-aerobic combined reaction device system according to claim 2, characterized in that, The outer wall of the acidification hydrolysis fermentation tank is provided with a heating layer and an insulation layer from the inside to the outside.

11. The method for resource-based treatment of cyanobacteria and reed straw using a segmented anaerobic-aerobic combined reaction device system according to claim 1, characterized in that, The solid-liquid separation unit is equipped with an internal isolation mesh.

12. The method for resource-based treatment of cyanobacteria and reed straw using a segmented anaerobic-aerobic combined reaction device system according to claim 11, characterized in that, The pipe inlet between the acidification hydrolysis fermentation unit and the solid-liquid separation unit is located at the bottom of the isolation net.

13. The method for resource-based treatment of cyanobacteria and reed straw using a segmented anaerobic-aerobic combined reaction device system according to claim 11, characterized in that, The pipe inlet between the solid-liquid separation unit and the anaerobic methanogenic fermentation unit is located at the top of the isolation net.

14. The method for resource-based treatment of cyanobacteria and reed straw using a segmented anaerobic-aerobic combined reaction device system according to claim 1, characterized in that, The pipelines between the acidification hydrolysis fermentation unit and the solid-liquid separation unit, as well as the pipelines between the solid-liquid separation unit and the anaerobic methanogenic fermentation unit, are each equipped with valves independently.

15. The method for resource-based treatment of cyanobacteria and reed straw using a segmented anaerobic-aerobic combined reaction device system according to claim 1, characterized in that, The solid-liquid separation unit is provided with a one-way exhaust port at the top.

16. The method for resource-based treatment of cyanobacteria and reed straw using a segmented anaerobic-aerobic combined reaction device system according to claim 1, characterized in that, The bottom of the solid-liquid separation unit is conical, and a slag outlet is provided at the bottom.

17. The method for resource-based treatment of cyanobacteria and reed straw using a segmented anaerobic-aerobic combined reaction device system according to claim 1, characterized in that, The anaerobic methanogenic fermentation unit includes an anaerobic methanogenic fermenter.

18. The method for resource-based treatment of cyanobacteria and reed straw using a segmented anaerobic-aerobic combined reaction apparatus system according to claim 17, characterized in that, The height-to-diameter ratio of the anaerobic methanogenic fermenter is (3.5-4):

1.

19. The method for resource-based treatment of cyanobacteria and reed straw using a segmented anaerobic-aerobic combined reaction device system according to claim 17, characterized in that, The tank body and the tank cover of the anaerobic methanogenic fermenter are connected by a flange.

20. The method for resource-based treatment of cyanobacteria and reed straw using a segmented anaerobic-aerobic combined reaction device system according to claim 19, characterized in that, The anaerobic methanogenic fermenter has a methane collection port on the edge of its lid.

21. The method for resource-based treatment of cyanobacteria and reed straw using a segmented anaerobic-aerobic combined reaction device system according to claim 19, characterized in that, The anaerobic methanogenic fermenter has a variable speed agitator installed in the center of the tank lid, and the agitator's stirring rod and blades are located in the center of the tank body.

22. The method for resource-based treatment of cyanobacteria and reed straw using a segmented anaerobic-aerobic combined reaction device system according to claim 17, characterized in that, The bottom of the anaerobic methanogenic fermenter is conical, and a liquid outlet is provided at the bottom.

23. The method for resource-based treatment of cyanobacteria and reed straw using a segmented anaerobic-aerobic combined reaction device system according to claim 17, characterized in that, The outer wall of the anaerobic methanogenic fermenter is provided with a heating layer and an insulation layer from the inside out.

24. The method for resource-based treatment of cyanobacteria and reed straw using a segmented anaerobic-aerobic combined reaction device system according to claim 1, characterized in that, The aerobic fermentation unit includes a horizontal aerobic fermenter.

25. The method for resource-based treatment of cyanobacteria and reed straw using a segmented anaerobic-aerobic combined reaction device system according to claim 24, characterized in that, The top of the horizontal aerobic fermenter is equipped with a feed hopper, and the feed hopper is connected to the slag outlet of the solid-liquid separation unit via a conveyor belt.

26. The method for resource-based treatment of cyanobacteria and reed straw using a segmented anaerobic-aerobic combined reaction apparatus system according to claim 24, characterized in that, The horizontal aerobic fermenter is equipped with a variable speed agitator on its side, and the agitator's stirring rod and blades are located in the center of the tank.

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