Biomass renewable energy sustainable supply device and method

Abstract

The invention relates to a sustainable supply device and method for biomass renewable energy, belongs to the technical field of water treatment, and aims to treat organic wastes through anaerobic fermentation, reduce environmental pollution caused by accumulation of the organic wastes, reduce use of landfills, reduce emission of greenhouse gases such as methane and the like and reduce environmental pollution. The synergistic effect of the gas stirring module and the circulating fan improves the fermentation efficiency and reduces the energy consumption, so that the environmental influence in the energy exploitation and use process is reduced, solid-liquid separation is carried out through the mud-water separation module, the pressure of solid wastes on the water treatment system is reduced, suspended solids in liquid are reduced, and the energy consumption is reduced. The water treatment process is more efficient and environment-friendly, biomass gas generated by fermentation can be used as energy, and fermentation liquor can be used as fertilizer or can be further treated and reused, so that cyclic utilization of resources is realized, and waste of the resources is reduced; according to the sustainable supply device for the biomass renewable energy, the environmental burden in the water treatment process is effectively reduced.

Description

Technical Field

[0001] The present invention belongs to the technical field of water treatment, and in particular relates to a device and method for sustainable supply of biomass renewable energy. Background Art

[0002] It is extremely important to explore an environmentally friendly and efficient water treatment and energy recovery system. The patent of this invention proposes a sustainable supply device and method for biomass renewable energy, which can make sustainable use of energy. While treating sewage, it can effectively recycle biomass energy, avoid many technical defects of traditional renewable energy, and continuously provide cities with green and low-carbon biomass energy supply, realizing the recycling of water resources and the low-carbon development of the economy and society. Summary of the invention

[0003] In order to solve the above problems existing in the prior art, the present invention provides a device and method for sustainable supply of biomass renewable energy, which solves the problem of additional burden on the environment caused by water treatment process in the prior art.

[0004] The objective of the present invention can be achieved through the following technical scheme: a sustainable supply device for biomass renewable energy, comprising an anaerobic fermentation device and an energy electrochemical reactor, wherein the biomass gas or fermentation liquid generated by the anaerobic fermentation device is transported to the energy electrochemical reactor, wherein the anaerobic fermentation device comprises an anaerobic fermentation reactor, a gas stirring module arranged at the bottom of the anaerobic fermentation reactor, a mud-water separation module and a circulating fan respectively arranged at the top of the anaerobic fermentation reactor, wherein the mud-water separation module is used for solid-liquid separation before and after the fermentation process, wherein the circulating fan drives the gas to enter the anaerobic fermentation reactor through the gas stirring module, wherein the gas stirring module generates a violent stirring effect so that the liquid and organic matter in the reactor are fully mixed, wherein the gas stirring module, the mud-water separation module and the circulating fan work together to achieve sustainable utilization of energy.

[0005] As a further solution of the present invention, the gas stirring module is connected to the circulation fan through a first pipeline, and the gas provided by the circulation fan enters the gas stirring module through the first pipeline.

[0006] As a further solution of the present invention, a plurality of inclined plates are provided in the mud-water separation module.

[0007] As a further solution of the present invention, the mud-water separation module is connected to the inlet and outlet of the anaerobic fermentation reactor through a second pipeline.

[0008] As a further solution of the present invention, the outlet of the circulation fan is connected to a ventilation duct arranged above the anaerobic fermentation reactor to ensure the circulation of gas in the entire reactor.

[0009] As a further solution of the present invention, the mud-water separation module realizes solid-liquid separation through physical action.

[0010] A method for sustainable supply of biomass renewable energy comprises the following steps: S1: solid-liquid separation, the sewage is first subjected to a solid-liquid separation process to separate solids and clear liquid; S2: Clear liquid treatment: the separated clear liquid is sent to the clear liquid anaerobic fermentation reactor for anaerobic fermentation to produce biogas for recycling; S3: solid treatment, the separated solids are further separated into organic and inorganic matter, and the separated organic matter is sent to a high-solid anaerobic fermentation reactor for anaerobic fermentation to produce biogas; S4: Inorganic matter drying treatment: the separated inorganic matter is mixed with the solid after thermal hydrolysis and enters the separation drying unit for drying treatment. The dried inorganic matter can be used as resources such as slag; S5: Organic matter drying and cracking. The organic matter entering the separation drying unit is dried and cracked to produce cracking gas and heat energy. The cracking gas reacts with oxygen in the air in an energy electrochemical reactor and is converted into electrical energy and heat energy. S6: Heat recovery and utilization: the heat generated during the cracking process and the heat generated by the energy electrochemical reactor are used to provide heat for the bioenergy disposal system; S7: Solid resource utilization: the solid after drying and cracking can be made into carbon rods or activated carbon for resource utilization. The heat energy generated by the combustion of carbon rods is supplied to the heating system of the bioenergy disposal system. S8: Activated carbon recycling, the generated activated carbon is used to adsorb biomass in the clear liquid produced by the clear liquid anaerobic fermentation reactor and the high-solid anaerobic fermentation reactor after fermentation, so as to improve the biomass energy conversion efficiency; S9: residual sludge treatment, the residual sludge after fermentation in the clear liquid anaerobic fermentation reactor and the high-solid anaerobic fermentation reactor is subjected to thermal hydrolysis treatment, and the clear liquid rich in high-concentration organic matter after thermal hydrolysis is returned to the clear liquid anaerobic fermentation reactor to continue anaerobic fermentation; S10: Resource recovery and recycling, the clear liquid after fermentation recovers biomass and water resources and continues to be recycled as resources; S11: Output of electricity and heat. The biogas and pyrolysis gas produced by the clear liquid anaerobic fermentation reactor, the high-solid anaerobic fermentation reactor and the quality-separation drying and pyrolysis center are converted into electricity and heat with oxygen in the air in the energy electrochemical reactor. Part of the electricity and heat is used to ensure the sustainable operation of the bioenergy disposal system, and the other part can be exported to reduce the city's dependence on external power supply. S12: Utilize bioenergy processing devices such as clear liquid fermentation, high solid fermentation, and fractionation drying and cracking to recycle all urban biomass, convert it into electricity and heat, and achieve urban energy self-sufficiency.

[0011] As a further solution of the present invention, the anaerobic fermentation reactor is a fully mixed anaerobic reactor.

[0012] As a further solution of the present invention, biomass is added to the fully mixed anaerobic reactor to increase the biogas production.

[0013] As a further solution of the present invention, the effluent after clear liquid anaerobic fermentation and high-solid anaerobic fermentation in S2-S3 can be used to recover biomass organic carbon by selecting activated carbon, double membrane, etc., and then recycled to the solid-liquid separation unit to continue to participate in reciprocating anaerobic fermentation to produce biogas.

[0014] The beneficial effects of the present invention are: Anaerobic fermentation is used to treat organic waste, which reduces the pollution caused by the accumulation of organic waste to the environment, reduces the use of landfills, and reduces the emission of greenhouse gases such as methane. The synergistic effect of the gas stirring module and the circulating fan improves the fermentation efficiency and reduces energy consumption, thereby reducing the environmental impact during energy extraction and use. The solid-liquid separation is carried out through the mud-water separation module, which reduces the pressure of solid waste on the water treatment system and reduces the suspended matter in the liquid, making the water treatment process more efficient and environmentally friendly. The biomass gas produced by fermentation can be used as energy, and the fermentation liquid can be used as fertilizer or further processed for reuse, realizing the recycling of resources and reducing resource waste. Therefore, this sustainable supply device of biomass renewable energy effectively reduces the environmental burden in the water treatment process through integrated innovation. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to facilitate understanding by those skilled in the art, the present invention is further described below with reference to the accompanying drawings.

[0016] Figure 1 It is a schematic diagram of the structure of the anaerobic fermentation device of the present invention; Figure 2 This is a working principle diagram of the sustainable supply device of biomass renewable energy of the present invention; Figure 3 It is the principle diagram of the output of electric energy and heat energy of the present invention.

[0017] Description of main component symbols: In the figure: 1. Gas stirring module; 2. Mud-water separation module; 3. Circulation fan; 4. Inclined plate; 5. Anaerobic fermentation reactor. DETAILED DESCRIPTION

[0018] In order to further explain the technical means and effects adopted by the present invention to achieve the predetermined invention purpose, the specific implementation methods, structures, features and effects of the present invention are described in detail below in conjunction with the accompanying drawings and preferred embodiments.

[0019] See also Figure 1 - Figure 3 The present embodiment provides a sustainable supply device for biomass renewable energy, including an anaerobic fermentation device and an energy electrochemical reactor. The biomass gas or fermentation liquid generated by the anaerobic fermentation device is transported to the energy electrochemical reactor. The anaerobic fermentation device includes an anaerobic fermentation reactor 5, a gas stirring module 1 arranged at the bottom of the anaerobic fermentation reactor 5, and a mud-water separation module 2 and a circulating fan 3 respectively arranged at the top of the anaerobic fermentation reactor 5. The mud-water separation module 2 is used to perform solid-liquid separation before and after the fermentation process. The circulating fan 3 drives the gas to enter the anaerobic fermentation reactor 5 through the gas stirring module 1. The gas stirring module 1 generates a violent stirring effect to fully mix the liquid and organic matter in the reactor. The gas stirring module 1, the mud-water separation module 2 and the circulating fan 3 work together to achieve sustainable energy utilization. Among them, the anaerobic fermentation device can convert organic waste into biomass gas and fermentation liquid. This process is carried out under anaerobic conditions, which not only reduces the emission of malodorous gases generated during the degradation of organic matter, but also reduces the emission of greenhouse gases. The gas stirring module 1 arranged at the bottom of the anaerobic fermentation reactor 5 produces a violent stirring effect through the gas flow driven by the circulating fan 3, which helps to improve the fermentation efficiency, while reducing the energy consumption in the fermentation process and reducing the impact on the environment. The mud and water separation module 2 at the top performs solid-liquid separation before and after the fermentation process, effectively separating solid residues and liquids, reducing the burden of solid waste treatment in subsequent processing. The solid residue can be used as fertilizer or further processed, while the liquid can be used for the next round of fermentation or discharged after treatment; in addition, the circulating fan 3 not only helps the stirring module block to produce a stirring effect, but also optimizes the gas flow in the fermentation process, improves the utilization efficiency of the gas, and reduces the impact of gas emissions on the environment.

[0020] At present, the treatment and reuse of water resources have become the key to achieving sustainable development. Although water treatment technology can effectively purify sewage, its treatment process and energy consumption may cause additional burdens on the environment in terms of energy, chemical use, greenhouse gas emissions, sludge treatment, equipment maintenance, water resource consumption and land use. In this regard, anaerobic fermentation is used to treat organic waste, which reduces the pollution caused by the accumulation of organic waste to the environment, reduces the use of landfills, and reduces the emission of greenhouse gases such as methane. The synergistic effect of the gas stirring module 1 and the circulating fan 3 improves the fermentation efficiency and reduces energy consumption, thereby reducing the environmental impact during energy extraction and use. The solid-liquid separation is performed through the mud-water separation module 2, which reduces the pressure of solid waste on the water treatment system, and also reduces the suspended matter in the liquid, making the water treatment process more efficient and environmentally friendly. The biomass gas produced by fermentation can be used as energy, and the fermentation liquid can be used as fertilizer or further treated and reused, realizing the recycling of resources and reducing the waste of resources. Therefore, this sustainable supply device for biomass renewable energy effectively reduces the environmental burden in the water treatment process through integrated innovation.

[0021] Since uneven gas distribution may cause hot spots or cold spots in the biomass decomposition process, affecting the overall treatment effect, in one embodiment, the gas stirring module 1 is connected to the circulating fan 3 by a first pipeline, and the gas provided by the circulating fan 3 enters the gas stirring module 1 through the first pipeline. The gas stirring module 1 is stirred by the gas provided by the circulating fan 3, which can more effectively mix the biomass raw materials and microorganisms, promote the decomposition and conversion of biomass, and the circulating fan 3 can ensure that the gas is evenly distributed in the pipeline, avoid local gas concentration is too high or too low, and ensure uniform treatment of biomass. In addition, by optimizing gas stirring, the efficiency of biomass conversion into renewable energy can be improved, thereby improving the energy utilization efficiency of the entire system. In general, by optimizing the connection between gas stirring and the circulating fan 3, the efficiency of the biomass renewable energy supply device is improved, the energy consumption and operating costs are reduced, and the stability and maintainability of the system are also enhanced.

[0022] In order to further improve the mud-water separation effect, reduce processing costs, and improve the operating efficiency and reliability of the equipment, in one embodiment, a plurality of inclined plates 4 are provided in the mud-water separation module 2. The inclined plates 4 can increase the contact area between the mud and water, so that when the mud-water mixture flows on the inclined plates 4, the solid particles are more likely to settle under the action of gravity, thereby improving the separation efficiency. At the same time, the design of the inclined plates 4 enables the mud-water mixture to form a thinner liquid film on the inclined plates 4, reducing mutual interference between particles and accelerating the settling speed of the solid particles.

[0023] In order to better reduce the additional burden on the environment during the water treatment process, in one embodiment, the mud-water separation module 2 is connected to the inlet and outlet of the anaerobic fermentation reactor 5 through a second pipeline, and the outlet of the circulating fan 3 is connected to the ventilation duct arranged above the anaerobic fermentation reactor 5 to ensure the circulation of gas in the entire reactor. The mud-water separation module 2 realizes solid-liquid separation through physical action. By realizing solid-liquid separation through the mud-water separation module 2, solid waste (such as sludge) and liquid waste (such as wastewater) can be treated separately, thereby more effectively recycling and utilizing resources. By separating solid and liquid through physical or mechanical methods, such as centrifugation, screening, etc., the use of chemical additives is reduced, and the burden on the environment is reduced. Through the design of the circulating fan 3 and the anaerobic fermentation reactor 5, the generated greenhouse gases can be more effectively captured and utilized, atmospheric emissions can be reduced, solid waste can be converted into energy, the burden on landfills can be reduced, and the mining of additional resources can also be reduced. By separating solid and liquid waste, liquid waste can be treated in a targeted manner, water treatment efficiency can be improved, and the impact on the environment can be reduced.

[0024] A method for sustainable supply of biomass renewable energy comprises the following steps: S1: solid-liquid separation, the sewage is first subjected to a solid-liquid separation process to separate solids and clear liquid; the purpose here is to separate the solid and liquid components in the sewage to prepare for subsequent treatment steps, thereby improving the efficiency and effect of the subsequent treatment process and reducing the impact of solids on the anaerobic fermentation process; S2: clear liquid treatment, the separated clear liquid is sent to the clear liquid anaerobic fermentation reactor 5 for anaerobic fermentation to produce biogas for recycling; the separated clear liquid is subjected to anaerobic fermentation to produce biogas, thereby realizing the recycling of energy, reducing the emission of organic matter, and reducing environmental pollution; S3: solid treatment, the separated solid is further separated from the organic matter and the inorganic matter, and the separated organic matter is sent to the high-solid anaerobic fermentation reactor 5 for anaerobic fermentation to produce biogas; the separated solid is separated from the organic matter and the inorganic matter, and the organic matter is anaerobically fermented to improve the anaerobic fermentation efficiency of the organic matter and increase the biogas production, and the separated inorganic matter can be further processed; S4: Inorganic matter drying treatment: the separated inorganic matter is mixed with the solid after thermal hydrolysis and enters the separation drying unit for drying treatment. The dried inorganic matter can be used as a resource such as slag; By mixing the inorganic matter with the solid after thermal hydrolysis and performing drying treatment, the dried inorganic matter can be used as a resource such as slag to achieve resource utilization; S5: Organic matter drying and cracking. After the organic matter entering the separation drying unit is dried, it is cracked to produce cracking gas and heat energy. The cracking gas and oxygen in the air undergo electrochemical reactions in the energy electrochemical reactor and are converted into electrical energy and thermal energy. After the organic matter is dried, it is cracked to produce cracking gas and thermal energy. The cracking gas and thermal energy can be converted into electrical energy and thermal energy, thus realizing the diversified utilization of energy. S6: Heat recovery and utilization: the heat energy generated in the cracking process and the heat energy generated by the energy electrochemical reactor are used for heating the bioenergy disposal system; by recovering the heat energy generated in the cracking process and the heat energy generated by the energy electrochemical reactor, energy waste is reduced and the heating demand of the bioenergy disposal system is met; S7: Solid resource utilization: the solid after drying and cracking can be made into carbon rods or activated carbon and used as resources. The heat energy generated by the combustion of carbon rods is supplied to the heating system of the bioenergy disposal system. By making the solid after drying and cracking into carbon rods or activated carbon and using them as resources, the economic benefits are increased. At the same time, the heat energy generated by the combustion of carbon rods can be used for heating. S8: Activated carbon is recycled, and the generated activated carbon is used to adsorb biomass in the clear liquid produced after fermentation in the clear liquid anaerobic fermentation reactor 5 and the high-solid anaerobic fermentation reactor 5, thereby improving the biomass energy conversion efficiency; activated carbon is used to adsorb biomass in the clear liquid produced after fermentation, thereby improving the biomass energy conversion efficiency and reducing the emission of pollutants; S9: residual sludge treatment, the residual sludge after fermentation in the clear liquid anaerobic fermentation reactor 5 and the high-solid anaerobic fermentation reactor 5 is subjected to thermal hydrolysis treatment, and the clear liquid rich in high-concentration organic matter after thermal hydrolysis is returned to the clear liquid anaerobic fermentation reactor 5 to continue anaerobic fermentation; by thermal hydrolysis of the residual sludge after fermentation, the extraction efficiency of organic matter is improved and the output of biomass energy is increased; S10: Resource recovery and recycling. The biomass and water resources in the fermented clear liquid are recovered and recycled as resources. By recovering the biomass and water resources in the fermented clear liquid, the recycling of resources is achieved, reducing dependence on natural resources. S11: Output of electric energy and heat energy. The biogas and pyrolysis gas produced by the clear liquid anaerobic fermentation reactor 5, the high-solid anaerobic fermentation reactor 5 and the fractionation drying and pyrolysis center are converted into electric energy and heat energy with oxygen in the air in the energy electrochemical reactor. A part of the electric energy and heat energy is used to ensure the sustainable operation of the bioenergy disposal system, and the other part of the electric energy and heat energy can be exported to reduce the city's dependence on external power supply. The produced biogas and pyrolysis gas are converted into electric energy and heat energy, part of which is used for self-use and part is exported to reduce the dependence on external power supply and improve the city's energy self-sufficiency rate. S12: Utilize clear liquid fermentation, high solid fermentation, fractionation and drying pyrolysis and other bioenergy processing devices to recycle all the biomass in the city and convert it into electricity and heat energy to achieve energy self-sufficiency in the city. In order to completely get rid of the city's dependence on external power supply, it is also possible to make full use of clear liquid fermentation, high solid fermentation, fractionation and drying pyrolysis and other bioenergy processing devices to recycle all the biomass in the city and use it in energy electrochemical reactors to convert it into electricity and heat energy as much as possible to meet the energy self-sufficiency of the entire city. By recycling all the biomass in the city and converting it into electricity and heat energy, the city can completely get rid of its dependence on external power supply and achieve sustainable development of energy. Combining these steps from S1 to S12 can achieve efficient utilization of biomass resources, reduce environmental pollution, improve energy utilization efficiency, achieve energy self-sufficiency in the city, and at the same time, promote the recycling of resources and reduce dependence on natural resources.

[0025] In order to increase the biogas production and flexibly adapt to the changes in raw materials, in one embodiment, the anaerobic fermentation reactor 5 adopts a fully mixed anaerobic reactor, and biomass is added to the fully mixed anaerobic reactor to increase the biogas production. The effluent after clear liquid anaerobic fermentation and high-solid anaerobic fermentation in S2-S3 can be recycled by activated carbon, double membrane, etc., and recycled to the solid-liquid separation unit to continue to participate in the reciprocating anaerobic fermentation to produce biogas. The fully mixed anaerobic reactor can efficiently convert biomass into biogas. By adding biomass, the biogas production can be further increased, and the energy output can be increased. The combination of clear liquid anaerobic fermentation and high-solid anaerobic fermentation can better handle biomass raw materials of different concentrations, optimize the entire fermentation process, and improve the fermentation efficiency. In addition, through activated carbon, double membrane and other technologies The application of can effectively recycle biomass organic carbon and realize the recycling of resources, which helps to reduce raw material consumption and production costs. The biogas produced during the anaerobic fermentation of biomass can be used as a renewable energy source, reducing dependence on fossil energy, while reducing greenhouse gas emissions and alleviating environmental pollution. In addition, the effluent after clear liquid anaerobic fermentation and high-solid anaerobic fermentation can be further treated with activated carbon to remove organic pollutants and improve the effluent water quality, which is beneficial to environmental protection. The application of technologies such as carbon and double membrane helps to maintain the stable operation of the system and prevent harmful substances in biomass raw materials from having adverse effects on the anaerobic fermentation process. The design can adapt to different types of biomass raw materials, has strong raw material adaptability, and is beneficial to the sustainable development of the biomass renewable energy industry.

[0026] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any form. Although the present invention has been disclosed as a preferred embodiment as above, it is not used to limit the present invention. Any technical personnel in this field can make some changes or modify the technical contents disclosed above into equivalent embodiments without departing from the scope of the technical solution of the present invention. However, any brief modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A sustainable supply device for biomass renewable energy, characterized in that: The invention comprises an anaerobic fermentation device and an energy electrochemical reactor. The biomass gas or fermentation liquid generated by the anaerobic fermentation device is transported to the energy electrochemical reactor. The anaerobic fermentation device comprises an anaerobic fermentation reactor, a gas stirring module arranged at the bottom of the anaerobic fermentation reactor, a mud-water separation module and a circulating fan respectively arranged at the top of the anaerobic fermentation reactor. The mud-water separation module is used for solid-liquid separation before and after the fermentation process. The circulating fan drives the gas to enter the anaerobic fermentation reactor through the gas stirring module. The gas stirring module generates a violent stirring effect to fully mix the liquid and organic matter in the reactor. The gas stirring module, the mud-water separation module and the circulating fan work together to achieve sustainable utilization of energy.

2. A sustainable biomass renewable energy supply device according to claim 1, characterized in that: The gas stirring module is connected to the circulation fan through a first pipeline, and the gas provided by the circulation fan enters the gas stirring module through the first pipeline.

3. The sustainable supply device of biomass renewable energy according to claim 1, characterized in that: A plurality of inclined plates are arranged in the mud-water separation module.

4. The sustainable supply device of biomass renewable energy according to claim 1 is characterized in that: The mud-water separation module is connected to the inlet and outlet of the anaerobic fermentation reactor through a second pipeline.

5. The sustainable supply device of biomass renewable energy according to claim 1, characterized in that: The outlet of the circulation fan is connected to a ventilation duct arranged above the anaerobic fermentation reactor to ensure the circulation of gas in the entire reactor.

6. The sustainable supply device of biomass renewable energy according to claim 1, characterized in that: The mud-water separation module realizes solid-liquid separation through physical action.

7. A method for sustainable supply of biomass renewable energy, based on a sustainable supply device for biomass renewable energy according to any one of claims 1 to 6, characterized in that: The following steps are involved: S1: solid-liquid separation, the sewage is first subjected to a solid-liquid separation process to separate solids and clear liquid; S2: Clear liquid treatment: the separated clear liquid is sent to the clear liquid anaerobic fermentation reactor for anaerobic fermentation to produce biogas for recycling; S3: solid treatment, the separated solids are further separated into organic and inorganic matter, and the separated organic matter is sent to a high-solid anaerobic fermentation reactor for anaerobic fermentation to produce biogas; S4: Inorganic matter drying treatment: the separated inorganic matter is mixed with the solid after thermal hydrolysis and enters the separation drying unit for drying treatment. The dried inorganic matter can be used as slag resources; S5: Organic matter drying and cracking. The organic matter entering the separation drying unit is dried and cracked to produce cracking gas and heat energy. The cracking gas reacts with oxygen in the air in an energy electrochemical reactor and is converted into electrical energy and heat energy. S6: Heat recovery and utilization: the heat generated during the cracking process and the heat generated by the energy electrochemical reactor are used to provide heat for the bioenergy disposal system; S7: Solid resource utilization: the solid after drying and cracking can be made into carbon rods or activated carbon for resource utilization. The heat energy generated by the combustion of carbon rods is supplied to the heating system of the bioenergy disposal system. S8: Activated carbon recycling, the generated activated carbon is used to adsorb biomass in the clear liquid produced by the clear liquid anaerobic fermentation reactor and the high-solid anaerobic fermentation reactor after fermentation, so as to improve the biomass energy conversion efficiency; S9: residual sludge treatment, the residual sludge after fermentation in the clear liquid anaerobic fermentation reactor and the high-solid anaerobic fermentation reactor is subjected to thermal hydrolysis treatment, and the clear liquid rich in high-concentration organic matter after thermal hydrolysis is returned to the clear liquid anaerobic fermentation reactor to continue anaerobic fermentation; S10: Resource recovery and recycling, the clear liquid after fermentation recovers biomass and water resources and continues to be recycled as resources; S11: Output of electricity and heat. The biogas and pyrolysis gas produced by the clear liquid anaerobic fermentation reactor, the high-solid anaerobic fermentation reactor and the quality-separation drying and pyrolysis center are converted into electricity and heat with oxygen in the air in the energy electrochemical reactor. Part of the electricity and heat is used to ensure the sustainable operation of the bioenergy disposal system, and the other part can be exported to reduce the city's dependence on external power supply. S12: Utilize clear liquid fermentation, high solid fermentation and fractionated drying and cracking bioenergy processing equipment to recycle all urban biomass, convert it into electricity and heat, and achieve urban energy self-sufficiency.

8. A method for sustainable supply of biomass renewable energy according to claim 7, characterized in that: The anaerobic fermentation reactor is a fully mixed anaerobic reactor.

9. A method for sustainable supply of biomass renewable energy according to claim 8, characterized in that: Biomass is added to the fully mixed anaerobic reactor to increase biogas production.

10. The method for sustainable supply of biomass renewable energy according to claim 7, characterized in that: The effluent from the clear liquid anaerobic fermentation and the high-solid anaerobic fermentation in S2-S3 is selected to recover the biomass organic carbon through activated carbon and double membrane, and then recycled to the solid-liquid separation unit to continue to participate in the reciprocating anaerobic fermentation to produce biogas.

Images