System for co-processing organic waste and preparing microbial protein

Abstract

The utility model relates to the field of organic waste treatment, in particular to a system for co-treating organic waste and preparing microbial protein. The system mainly comprises an oxygen supply device, an anaerobic digestion reactor, a microbial protein production unit, an ammonia nitrogen collection unit and a microbial protein collection device. According to the system, methane and hydrogen sulfide in biogas are converted into microbial protein in the microbial protein production unit through MOB and SOB mixed strains, greenhouse gas emission is reduced, and high-added-value products are produced while carbon and sulfur resources are recycled. In addition, the ammonia nitrogen collecting unit effectively recovers nitrogen resources, and meanwhile the environmental emission problem of high-concentration ammonia nitrogen is solved. The stability and efficiency are improved through the synergistic effect of the system components, the resource recovery process is optimized, the economic benefits are increased, and an efficient solution is provided for sustainable waste management and cyclic utilization of carbon, nitrogen and sulfur resources.

Description

Technical Field

[0001] This utility model relates to the field of organic waste treatment, and in particular to a system for the co-processing of organic waste to recover carbon, nitrogen and sulfur resources and prepare microbial protein. Background Technology

[0002] Organic waste includes waste gas (H2, CO, CO2, CH4, H2S), organic wastewater (distillery wastewater, municipal sewage, livestock wastewater), and organic solid waste (livestock manure, crop straw, kitchen waste). Anaerobic digestion, as a highly efficient organic waste treatment technology, is widely used in various fields such as waste gas treatment, sewage treatment, agricultural waste resource utilization, and kitchen waste treatment. It not only converts organic waste into bioenergy (biogas) and fertilizer (biogas slurry), but also provides dual benefits of environmental governance and energy recovery, playing a significant role in promoting the construction of a resource-saving and environmentally friendly society. However, the byproducts of anaerobic digestion also present challenges, especially biogas and the hydrogen sulfide (H2S) it contains, and the high concentration of ammonia nitrogen (NH4+-N) in the biogas slurry. These components may inhibit the activity of anaerobic microorganisms and may also cause environmental pollution problems such as groundwater pollution and eutrophication.

[0003] Traditionally, overcoming these problems requires additional processing steps to remove hydrogen sulfide and control the carbon-to-nitrogen ratio, which undoubtedly increases reaction costs and operational investment. Therefore, how to effectively utilize hydrogen sulfide and high concentrations of ammonia nitrogen has been a pressing technical problem that needs to be solved. Utility Model Content

[0004] (a) Technical problems to be solved

[0005] This invention provides a system for the co-processing of organic waste and the preparation of microbial protein, solving the problem of inefficient recovery of hydrogen sulfide and ammonia nitrogen in traditional anaerobic digestion. By integrating multiple devices, this system not only achieves effective treatment of organic waste but also synthesizes microbial protein during the treatment process, realizing efficient recovery and reuse of carbon, nitrogen, and sulfur resources, thereby improving economic benefits.

[0006] (II) Technical Solution

[0007] To achieve the above objectives, the main technical solutions adopted by this utility model include:

[0008] A system for co-processing organic waste and producing microbial protein, comprising an oxygen supply unit, an anaerobic digestion reactor, a microbial protein production unit, an ammonia nitrogen collection unit, and a microbial protein collection device; wherein:

[0009] The oxygen supply unit is connected to the microbial protein production unit via pipeline; the microbial protein production unit contains a mixed inoculum of MOB and SOB; one end of the microbial protein production unit is connected to the ammonia nitrogen collection unit, one end of the microbial protein production unit is connected to the microbial protein collection device, and one end of the microbial protein production unit is connected to one end of the anaerobic digestion reactor via pipeline; the other end of the anaerobic digestion reactor is connected to the ammonia nitrogen collection unit via pipeline.

[0010] MOB stands for methanogenic bacteria, and SOB stands for sulfur-oxidizing bacteria.

[0011] In some embodiments, the system further includes a culture medium unit, which includes a first culture medium unit and a second culture medium. The first culture medium unit and the second culture medium are directly or indirectly connected to the microbial protein production unit; the first culture medium unit and the second culture medium have the same structure.

[0012] The culture medium unit includes a culture medium device body and a first peristaltic pump. The culture medium device body is directly connected to the microbial protein production unit through the first peristaltic pump, or the culture medium device body is connected to the pipeline between the oxygen supply device and the microbial protein production unit through the first peristaltic pump, or one end of the culture medium device body is connected to the ammonia nitrogen collection unit and the other end is connected to the microbial protein production unit.

[0013] In some embodiments, the system further includes an oxygen purification device, a methane purification device, and a second peristaltic pump. The oxygen supply device is connected to the inlet of the second peristaltic pump through the oxygen purification device. The anaerobic digester is connected to the inlet of the second peristaltic pump through the methane purification device. The outlet of the second peristaltic pump is connected to the microbial protein production unit. The second peristaltic pump can also be connected to the culture medium unit.

[0014] In some embodiments, the ammonia nitrogen collection unit includes a nitrogen stripping device and / or an electrochemical reaction device;

[0015] The anaerobic digester is connected to one end of the ammonia nitrogen collection unit, and the other end of the ammonia nitrogen collection unit is directly or indirectly connected to the microbial protein production unit.

[0016] In some embodiments, when the ammonia nitrogen collection unit includes a nitrogen stripping device, the system further includes a condenser well, a heating device, a third peristaltic pump, a gas distributor, and a stripping chamber. The inlet of the nitrogen stripping device is connected to the third peristaltic pump via a first pipeline, and the third peristaltic pump is connected to the anaerobic digester. The end of the first pipeline is connected to the gas distributor, which is located in the stripping chamber. The outlet of the nitrogen stripping device is connected to the inlet of the condenser well, and the outlet of the condenser well is connected to the microbial protein production unit.

[0017] In some embodiments, when the ammonia nitrogen collection unit includes an electrochemical reaction device, the electrochemical reaction device includes a cathode, a cathode chamber, an anode, an anode chamber, an ammonia nitrogen collection chamber, a first cation exchange membrane, a second cation exchange membrane, and a power source. The anode chamber, cathode chamber, and ammonia nitrogen collection chamber are arranged sequentially. The anode chamber is connected to the anaerobic digester. The first cation exchange membrane is installed between the anode chamber and the cathode chamber, and the second cation exchange membrane is installed between the cathode chamber and the ammonia nitrogen collection chamber. An anode is provided in the anode chamber, and the anode is connected to the positive terminal of the power source through a wire. A resistor is provided on the wire connecting the anode and the positive terminal of the power source. A cathode is provided in the cathode chamber, and the cathode is connected to the negative terminal of the power source through a wire.

[0018] The ammonia nitrogen collection chamber is connected to the microbial protein production unit, or the ammonia nitrogen collection chamber is connected to the microbial protein production unit through the culture medium unit.

[0019] In some embodiments, the microbial protein production unit includes a spray reactor, a first bubble reactor, a second bubble reactor, an airlift reactor, a trickle bed reactor, a bioreactor, and / or a hollow fiber membrane bioreactor; the microbial protein production unit is connected to the second peristaltic pump via a second pipeline, and the medium flowing in the second pipeline is a gas or a gas-liquid mixture.

[0020] In some embodiments, when the microbial protein production unit is a bioreactor, the bioreactor includes a first stirring motor, a first discharge port, a first feed port, a first air inlet, a first air outlet, a hollow fiber tube, a heating jacket, a first stirring paddle, and a hollow fiber tube winding frame; a heating jacket is provided outside the bioreactor body, and a first stirring motor is provided on the top of the bioreactor body; the first stirring motor is connected to the...

[0021] The first stirring paddle is rotatably connected inside the bioreactor body. The hollow fiber tube is installed on the hollow fiber tube winding frame and located inside the bioreactor body. The hollow fiber tube is spiral-shaped. The top of the bioreactor is provided with a first discharge port, a first feed port, a first air inlet, and a first air outlet. The first discharge port is connected to the microbial protein collection device, the first feed port is connected to the culture medium unit, the first air inlet is connected to the second peristaltic pump, and the first air outlet is connected to the waste gas collection device.

[0022] When the microbial protein production unit is a spray reactor, the spray reactor includes a second stirring motor, a second air outlet, a first nozzle, a reactor frame, a demister, a second stirring paddle, a second discharge outlet, a second inlet, a first gas-liquid mixture inlet, a first auxiliary gas distribution pipe, and a gas-liquid mixture conveying pipe. The spray reactor body is mounted on the reactor frame. The upper end of the spray reactor body is provided with a first gas-liquid mixture inlet and a gas-liquid mixture conveying pipe arranged laterally inside the spray reactor body. The first gas-liquid mixture inlet is the inlet of the gas-liquid mixture conveying pipe. The first gas-liquid mixture inlet is located in the hollow fiber membrane bioreactor. Outside the reactor, the first gas-liquid mixture inlet is connected to the second peristaltic pump. Multiple first nozzles are installed at the lower end of the gas-liquid mixture conveying pipe, and at least one first auxiliary gas distribution pipe is provided at the lower end of the gas-liquid mixture conveying pipe. A demister is installed below the gas-liquid mixture conveying pipe. The second feed inlet is located outside the middle of the spray reactor and is connected to the culture medium unit. The second discharge outlet is located at the lower end of the spray reactor and is connected to the microbial protein collection device. A second stirring motor is installed on the top of the spray reactor and is rotatably connected to the second stirring paddle located inside the spray reactor. The second air outlet on the top of the spray reactor is connected to the waste gas collection device.

[0023] When the microbial protein production unit is a first bubbling reactor, the first bubbling reactor includes a bubbling reactor body, a third air inlet, a third air outlet, a third discharge outlet, a first air distribution pipe, and a third feed inlet. The first air distribution pipe is located inside the first bubbling reactor body, and the end of the first air distribution pipe is the third air inlet. The third air inlet is located at the top of the first bubbling reactor body, and the top of the first bubbling reactor body is also provided with a third air outlet. The middle part of the first bubbling reactor body is provided with a third feed inlet, and the bottom of the bubbling reactor body is the third discharge outlet.

[0024] When the microbial protein production unit is an airlift reactor, the airlift reactor includes an airlift reactor body, a fourth air inlet, a fourth air outlet, a fourth discharge outlet, a second air distribution pipe, airlift baffles, and a fourth feed inlet. The second air distribution pipe is located inside the airlift reactor body, and its end is the fourth air inlet. The fourth air inlet is located at the top of the airlift reactor body, and the top of the airlift reactor body is also provided with a fourth air outlet. An airlift baffle is provided inside the airlift reactor body, and the lateral distance between the two airlift baffles is greater than the lateral width of the second air distribution pipe. The fourth feed inlet is located in the middle of the airlift reactor body, and the bottom of the airlift reactor body is the fourth discharge outlet.

[0025] The microbial protein production unit is a second bubble reactor, which is a bubble reactor with an external liquid circulation device. The second bubble reactor includes a second bubble reactor body, a fifth air inlet, a fifth air outlet, an external circulation feed inlet, a fifth discharge outlet, and a third cloth.

[0026] The reactor includes a gas pipe, a fifth feed inlet, and a fifth peristaltic pump. The third gas distribution pipe is located inside the second bubbling reactor body, with the end of the third gas distribution pipe serving as the fifth air inlet. The fifth air inlet is located at the top of the second bubbling reactor body, and the top of the second bubbling reactor body also has a fifth air outlet. The middle of the second bubbling reactor body has a fifth feed inlet and an external circulation feed inlet, respectively. The bottom of the bubbling reactor body has a fifth discharge outlet. The fifth discharge outlet and the external circulation feed inlet are connected by a fifth peristaltic pump. A branch pipe is provided between the fifth discharge outlet and the fifth peristaltic pump, and the branch pipe is connected to a microbial protein collection device.

[0027] When the microbial protein production unit is a trickle bed reactor, the trickle bed reactor includes a trickle bed reactor body, a sixth air outlet, a second nozzle, microbial attachment packing, a sixth discharge outlet, a second auxiliary gas distribution pipe, and a second gas-liquid mixture inlet. The upper end of the trickle bed reactor body is provided with the second gas-liquid mixture inlet and a gas-liquid mixture conveying pipe arranged laterally inside the trickle bed reactor body. The second gas-liquid mixture inlet is the inlet of the gas-liquid mixture conveying pipe. The lower part of the gas-liquid mixture conveying pipe is provided with the second nozzle and the second auxiliary air distribution pipe. The interior of the trickle bed reactor body is provided with microbial attachment packing. The top of the trickle bed reactor body is provided with the sixth air outlet, and the bottom of the trickle bed reactor body is provided with the sixth discharge outlet.

[0028] When the microbial protein production unit is a hollow fiber membrane bioreactor, the hollow fiber membrane bioreactor includes a hollow fiber membrane bioreactor body, a seventh air outlet, a hollow fiber tube air outlet, a hollow fiber tube assembly, a seventh discharge outlet, a hollow fiber tube air inlet, and a seventh feed inlet. The seventh air outlet is located at the top of the hollow fiber membrane bioreactor body, the seventh feed inlet is located in the middle of the hollow fiber membrane bioreactor body, and the seventh discharge outlet is located at the bottom of the hollow fiber membrane bioreactor body. The hollow fiber tube assembly is installed inside the hollow fiber membrane bioreactor body. The upper end of the hollow fiber tube assembly is the hollow fiber tube air outlet, which is located outside the hollow fiber membrane bioreactor body. The lower end of the hollow fiber tube assembly is the hollow fiber tube air inlet, which is located outside the hollow fiber membrane bioreactor body.

[0029] In some embodiments, the system further includes a sulfur source supply device, which includes a hydrogen sulfide gas supply device, a culture medium unit, and / or a sulfur salt storage device. When the sulfur source supply device is a hydrogen sulfide gas supply device, the hydrogen sulfide gas supply device is connected to the microbial protein production unit via a second peristaltic pump.

[0030] When the sulfur source supply device is a culture medium unit and / or a sulfur salt storage device, the culture medium unit and / or sulfur salt storage device is connected to the microbial protein production unit through a second peristaltic pump, or the culture medium unit and / or sulfur salt storage device is connected to the microbial protein production unit through a first peristaltic pump.

[0031] Beneficial effects

[0032] This invention provides a system for the co-processing of organic waste and the preparation of microbial protein. By integrating multiple devices, it achieves significant environmental and economic benefits. Firstly, the system efficiently utilizes byproducts generated during anaerobic digestion, particularly converting methane and hydrogen sulfide in biogas into useful resources. Methane-oxidizing bacteria consume methane in biogas, generating biomass, i.e., microbial protein, in the process. This not only reduces methane emissions as a greenhouse gas but also produces high-value-added products.

[0033] At this time, sulfur-oxidizing bacteria can use hydrogen sulfide contained in biogas as an energy source for growth, further reducing harmful gas emissions and providing essential sulfur nutrition for microorganisms.

[0034] Furthermore, the system effectively treats high concentrations of ammonia nitrogen through an ammonia nitrogen collection unit, preventing it from inhibiting the activity of anaerobic microorganisms and causing environmental pollution problems such as groundwater pollution and eutrophication. The microbial protein production unit contains MOB and SOB, which work synergistically to not only improve the system's stability and efficiency but also synthesize high-value-added microbial protein while treating organic waste. This protein can be used as a high-quality protein additive in animal feed or fertilizer, achieving an effective transformation from waste to resource.

[0035] The synergistic effect among components such as the oxygen supply unit, anaerobic digester, and microbial protein production unit enhances the stability and efficiency of the entire system, ensuring long-term operational reliability. The optimized resource recovery process and the generation of high-value products reduce processing costs and increase economic benefits.

[0036] Overall, this system not only solves the technical challenges of traditional anaerobic digestion processes, but also achieves dual success in terms of environmental protection and economic benefits, providing a feasible and efficient solution for sustainable management and resource recycling. Attached Figure Description

[0037] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0038] Figure 1 A system flow diagram showing the coordination between the ammonia nitrogen collection unit and the microbial protein production unit of this utility model;

[0039] Figure 2 This is a system flow diagram of the present invention, which uses oxygen to carry nutrients in the culture medium into the microbial protein production unit.

[0040] Figure 3 This is a system flow diagram showing the combined operation of the nitrogen stripping device and the electrochemical reaction device of this utility model;

[0041] Figure 4 This is a system flow diagram of the oxygen-driven sulfur salt storage device of this utility model, which introduces sulfur salt into the microbial protein production unit.

[0042] Figure 5 This is a system flow diagram of the standalone electrochemical reaction device of this utility model participating in ammonia nitrogen treatment;

[0043] Figure 6 This is a schematic diagram of the structure of the bioreactor of this utility model;

[0044] Figure 7 This is a schematic diagram of the spray reactor structure of this utility model;

[0045] Figure 8 This is a schematic diagram of the bubble-type reactor structure of this utility model;

[0046] Figure 9 This is a schematic diagram of the airlift reactor structure of this utility model;

[0047] Figure 10 This is a schematic diagram of the structure of the bubble-type reactor with external liquid circulation of this utility model;

[0048] Figure 11 This is a schematic diagram of the structure of the trickle bed reactor of this utility model;

[0049] Figure 12 This is a schematic diagram of the structure of the membrane bioreactor of this utility model;

[0050] Figure 13 This is a schematic diagram of the electrochemical reaction device of this utility model.

[0051] [Explanation of Labels in the Attached Image]

[0052] 1. Oxygen supply unit; 2. Anaerobic digester; 3. Microbial protein production unit; 4. Ammonia nitrogen collection unit; 5. Microbial protein collection device; 6. First culture medium unit; 7. Second culture medium unit; 8. First peristaltic pump; 9. Oxygen purification device; 10. Methane purification device; 11. Second peristaltic pump; 12. Waste gas collection device; 13. Hydrogen sulfide gas supply device; 14. Sulfate storage device;

[0053] 15. Fourth peristaltic pump;

[0054] 311. First stirring motor; 312. First discharge port; 313. First feed port; 314. First air inlet; 315. First air outlet; 316. Hollow fiber tube; 317. Heating jacket; 318. First stirring paddle; 319. Hollow fiber tube winding frame;

[0055] 321. Second stirring motor; 322. Second air outlet; 323. First nozzle; 324. Reactor mounting frame; 325. Demister; 326. Second stirring paddle; 327. Second discharge port; 328. Second feed inlet; 329. First gas-liquid mixture inlet; 330. First auxiliary gas distribution pipe;

[0056] 331. Third air inlet; 332. Third air outlet; 333. Third material outlet; 334. First air distribution pipe; 335. Third material inlet;

[0057] 341. Fourth air inlet; 342. Fourth air outlet; 343. Fourth discharge outlet; 344. Second air distribution pipe; 345. Air lift baffle; 346. Fourth feed inlet;

[0058] 351. Fifth air inlet; 352. Fifth air outlet; 353. External circulation feed inlet; 355. Fifth discharge outlet; 356. Third air distribution pipe; 357. Fifth feed inlet; 354. Fifth peristaltic pump;

[0059] 361. Sixth air outlet; 362. Second nozzle; 363. Microbial attachment packing; 364. Sixth discharge outlet; 365. Second auxiliary air distribution pipe; 366. Second gas-liquid mixture inlet;

[0060] 371. Seventh air outlet; 372. Hollow fiber tube air outlet; 373. Hollow fiber tube assembly; 374. Seventh material outlet; 375. Hollow fiber tube air inlet; 376. Seventh material inlet;

[0061] 41. Nitrogen stripping unit; 42. Electrochemical reaction unit;

[0062] 411. Stripping chamber; 412. Gas distributor; 413. Heating device; 414. Condensation well; 415. Third peristaltic pump;

[0063] 421. Cathode; 422. Cathode chamber; 423. Anode; 424. Anode chamber; 425. Ammonia nitrogen collection chamber; 426. First cation exchange membrane; 427. Second cation exchange membrane; 428. Power supply. Detailed Implementation

[0064] All terms used in this application have the same meaning as understood by one of ordinary skill in the art to which this application pertains, unless otherwise specifically defined. It should also be understood that terms defined in general dictionaries should be interpreted as having meanings consistent with their meanings in the context of the relevant art, and not as idealized or highly formalized, unless expressly defined herein.

[0065] Techniques, methods, and equipment known to those skilled in the art may not be discussed in detail, but where appropriate, they should be considered part of the specification.

[0066] Organic waste includes exhaust gas (H2, CO, CO2, CH4, H2S), organic wastewater (distillery wastewater, municipal sewage, livestock wastewater), and organic solid waste (poultry and livestock manure, crop straw, and kitchen waste).

[0067] In other words, this system can directly process the collected biogas without requiring it to undergo anaerobic digestion. Furthermore, it determines whether to add a sulfur source based on the concentration of hydrogen sulfide in the biogas.

[0068] Reference Figures 1-5 A system for co-processing organic waste and preparing microbial protein, comprising an oxygen supply unit 1, an anaerobic digestion reactor 2, a microbial protein production unit 3, an ammonia nitrogen collection unit 4, and a microbial protein collection device 5; wherein:

[0069] Oxygen supply unit 1 is connected to microbial protein production unit 3 via pipeline; microbial protein production unit 3 contains a mixed culture of MOB and SOB; one end of microbial protein production unit 3 is connected to ammonia nitrogen collection unit 4; one end of microbial protein production unit 3 is connected to microbial protein collection device 5; one end of microbial protein production unit 3 is connected to one end of anaerobic digestion reactor 2 via pipeline; the other end of anaerobic digestion reactor 2 is connected to ammonia nitrogen collection unit 4 via pipeline.

[0070] A system for co-processing organic waste and producing microbial protein integrates an oxygen supply unit 1, an anaerobic digester 2, a microbial protein production unit 3, an ammonia nitrogen collection unit 4, and a microbial protein collection device 5, achieving efficient resource recovery and environmentally friendly treatment. In this system, MOB (Methanalous Organic Bacteria) and SOB (Sodium Sulfate) work together to convert methane and hydrogen sulfide in biogas into high-value-added microbial protein, effectively reducing greenhouse gas emissions and mitigating the environmental impact of harmful substances. Simultaneously, the ammonia nitrogen collection unit 4 treats high concentrations of ammonia nitrogen in wastewater, preventing it from inhibiting anaerobic microbial activity and causing environmental pollution. The entire system not only optimizes the resource recovery process and reduces treatment costs but also enhances economic benefits by generating high-value products, providing an efficient and environmentally friendly solution for sustainable waste management and resource recycling. In this way, the system achieves effective waste treatment while synthesizing valuable microbial protein, significantly improving overall economic and environmental benefits.

[0071] Reference Figures 1-5 The system also includes a culture medium unit, which comprises a first culture medium unit 6 and a second culture medium unit 7. The first culture medium unit 6 and the second culture medium unit 7 are directly or indirectly connected to the microbial protein production unit 3. The first culture medium unit 6 and the second culture medium unit 7 have the same structure, but are located in different positions within the system.

[0072] The first type: The first culture medium unit 6 or the second culture medium unit 7 is directly connected to the microbial protein production unit 3.

[0073] The second type: The first culture medium unit 6 or the second culture medium unit 7 is connected to the microbial protein production unit 3 under the influence of oxygen.

[0074] The third type: The first culture medium unit 6 or the second culture medium unit 7 is connected to the microbial protein production unit 3 under the influence of methane gas generated by the anaerobic digester 2.

[0075] The fourth type: The first culture medium unit 6 or the second culture medium unit 7 is connected to the microbial protein production unit 3 under the influence of a mixture of oxygen and methane gas.

[0076] Fifth type: The first culture medium unit 6 or the second culture medium unit 7 is connected to the microbial protein production unit 3 under the influence of oxygen, methane and hydrogen sulfide gases.

[0077] The first culture medium unit 6 or the second culture medium unit 7 includes a culture medium device body and a first peristaltic pump 8. The culture medium device body is directly connected to the microbial protein production unit 3 via the first peristaltic pump 8. Alternatively, the culture medium device body is connected to the oxygen supply device 1 and the microbial protein production unit 3 via the first peristaltic pump 8.

[0078] The piping between units 3 is connected. Alternatively, the culture medium device body is connected to the anaerobic digestion reactor 2 and the microbial protein production unit 3 via the first peristaltic pump 8. Alternatively, one end of the culture medium device body is connected to the ammonia nitrogen collection unit 4, and the other end is connected to the microbial protein production unit 3.

[0079] Of course, the first peristaltic pump 8 can also be omitted.

[0080] Because MOB and SOB need to be cultured in a suitable culture medium to ensure that they can grow and metabolize effectively, a first culture medium unit 6 or a second culture medium unit 7 is set up.

[0081] Reference Figures 1-5 The system also includes an oxygen purification device 9, a methane purification device 10, and a second peristaltic pump 11. The oxygen supply device 1 is connected to the inlet of the second peristaltic pump 11 through the oxygen purification device 9. The anaerobic digester 2 is connected to the inlet of the second peristaltic pump 11 through the methane purification device 10. The outlet of the second peristaltic pump 11 is connected to the microbial protein production unit 3. The second peristaltic pump 11 can also be connected to the culture medium unit.

[0082] The system further optimizes the efficiency and stability of treating organic waste and synthesizing microbial protein by adding an oxygen purification device 9, a methane purification device 10, and a second peristaltic pump 11. Oxygen purified by the oxygen purification device 9 is delivered to the microbial protein production unit 3 via the second peristaltic pump 11, ensuring that the mixed strains (MOB and SOB) grow and reproduce under optimal conditions, thus improving bioconversion efficiency.

[0083] Reference Figures 1-5 The ammonia nitrogen collection unit 4 includes a nitrogen stripping device 41 and / or an electrochemical reaction device 42.

[0084] The anaerobic digester 2 is connected to one end of the ammonia nitrogen collection unit 4, and the other end of the ammonia nitrogen collection unit 4 is directly or indirectly connected to the microbial protein production unit 3.

[0085] The ammonia nitrogen collection unit 4 is a nitrogen stripping device 41. The anaerobic digestion reactor 2 is connected to the nitrogen stripping device 41. The nitrogen stripping device 41 is connected to the microbial protein production unit 3 through the first culture medium unit 6 / second culture medium unit 7, or directly. Preferably, it is connected to the microbial protein production unit 3 through the first culture medium unit 6 / second culture medium unit 7.

[0086] The ammonia nitrogen collection unit 4 is an electrochemical reaction device 42. The anaerobic digestion reactor 2 is connected to the electrochemical reaction device 42. The electrochemical reaction device 42 is connected to the microbial protein production unit 3 through the first culture medium unit 6 / second culture medium unit 7, or directly. Preferably, it is connected to the microbial protein production unit 3 through the first culture medium unit 6 / second culture medium unit 7.

[0087] When the ammonia nitrogen collection unit 4 is a nitrogen stripping device 41 and an electrochemical reaction device 42, the anaerobic digestion reactor 2 is connected to the nitrogen stripping device 41 and the electrochemical reaction device 42 respectively; when the nitrogen stripping device 41 and the electrochemical reaction device 42 are both connected to the microbial protein production unit 3 through the first culture medium unit 6 / the second culture medium unit 7.

[0088] The inclusion of ammonia nitrogen collection unit 4 significantly improves the overall performance and resource recovery efficiency of the waste treatment and microbial protein synthesis system.

[0089] When the ammonia nitrogen collection unit 4 adopts the nitrogen stripping device 41, the high concentration of ammonia nitrogen produced by the anaerobic digester 2 can be transferred from the liquid phase to the gas phase through stripping technology, thereby effectively reducing the content of ammonia nitrogen in wastewater and reducing its impact on the environment, such as groundwater pollution and eutrophication.

[0090] When the ammonia nitrogen collection unit 4 uses an electrochemical reaction device 42, ammonia nitrogen is precisely extracted from the digestion liquid through the electrochemical device. This not only improves the nitrogen recovery rate, but also allows for flexible adjustment of the ammonia nitrogen concentration according to actual needs, so as to meet the needs of different microorganisms.

[0091] The electrochemical reaction device 42 can directly supply the converted nitrogen source to the microbial protein production unit 3, ensuring that MOB and SOB have sufficient nitrogen for growth and metabolism. That is, liquid ammonia nitrogen is directly input into the microbial protein production unit 3.

[0092] The electrochemical reaction device 42 can provide the converted nitrogen source to the microbial protein production unit 3 through the culture medium unit 6, ensuring that MOB and SOB can obtain sufficient nitrogen for growth and metabolism. That is, liquid ammonia nitrogen is introduced into the microbial protein production unit 3 along with the other components in the culture medium.

[0093] When the ammonia nitrogen collection unit 4 includes both a nitrogen stripping device 41 and an electrochemical reaction device 42, the anaerobic digestion reactor 2 is connected to both. This design provides dual protection: the ammonia nitrogen concentration can be rapidly reduced through physical methods (nitrogen stripping), and the supply and utilization rate of ammonia nitrogen can be further optimized through physicochemical methods (electrochemical reaction).

[0094] In summary, the ammonia nitrogen collection unit 4 significantly enhances the system's resource recovery capabilities, reduces environmental pollution risks, and achieves a win-win situation for both organic waste and high-value-added product production through efficient nitrogen management and optimized utilization. This design provides an efficient and environmentally friendly solution for sustainable waste management and resource recycling.

[0095] Reference Figures 1-5 When the ammonia nitrogen collection unit 4 includes a nitrogen stripping device 41, the system also includes a condenser well 414, a heating device 413, a third peristaltic pump 415, a gas distributor 412, and a stripping chamber 411. The air inlet of the nitrogen stripping device 41 is connected to the third peristaltic pump 415 through a first pipeline. The third peristaltic pump 415 is connected to the anaerobic digester 2. The end of the first pipeline is connected to the gas distributor 412. The gas distributor 412 is installed in the stripping chamber 411. The air outlet of the nitrogen stripping device 41 is connected to the air inlet of the condenser well 414. The air outlet of the condenser well 414 is connected to the microbial protein production unit 3.

[0096] The air inlet of the nitrogen stripping unit 41 is connected to the third peristaltic pump 415 via a first pipeline, and the end of the first pipeline is connected to a gas distributor 412. This design ensures that the gas entering the nitrogen stripping unit 41 can be evenly distributed, thereby improving the stripping efficiency of ammonia nitrogen.

[0097] The outlet of the nitrogen stripping unit 41 is connected to the inlet of the condenser well 414, and the outlet of the condenser well 414 is connected to the microbial protein production unit 3. This allows the treated gas (containing ammonia) to be reintroduced into the microbial protein production unit 3.

[0098] The gas flow rate is controlled by a third peristaltic pump 415, enabling precise regulation of gas distribution and circulation. This helps maintain the stability of the internal environment of the system, ensuring that MOBs and SOBs can grow and metabolize under optimal conditions.

[0099] To improve the stripping efficiency of ammonia nitrogen, the digester liquid is usually heated to increase the volatility of ammonia. The presence of the heating device 413 allows the system to operate efficiently with lower energy consumption, reducing energy consumption while improving the ammonia nitrogen removal rate.

[0100] The condenser well 414 is used to condense the foam and small amount of liquid carried out by the gas from the stripping chamber 411, while cooling the gas temperature to reduce disturbance to the microbial protein production unit 3.

[0101] Through the synergistic effect of the aforementioned components, the system forms a closed-loop management system, achieving efficient conversion and reuse of ammonia nitrogen from wastewater to gas and then to microbial culture medium. This not only reduces the demand for external nitrogen sources and lowers operating costs, but also improves the resource recovery rate and economic benefits of the entire system.

[0102] Reference Figure 13 When the ammonia nitrogen collection unit 4 includes an electrochemical reaction device 42, the electrochemical reaction device 42 includes a cathode 421, a cathode chamber 422, an anode 423, an anode chamber 424, an ammonia nitrogen collection chamber 425, a first cation exchange membrane 426, a second cation exchange membrane 427, and a power supply 428. The anode chamber 424, cathode chamber 422, and ammonia nitrogen collection chamber 425 are arranged sequentially. The anode chamber 424 is connected to the anaerobic digester 2. The first cation exchange membrane 426 is installed between the anode chamber 424 and the cathode chamber 422, and the second cation exchange membrane 427 is installed between the cathode chamber 422 and the ammonia nitrogen collection chamber 425. An anode 423 is provided inside the anode chamber 424, and the anode 423 is connected to the positive terminal of the power supply 428 via a wire. A resistor (not shown in the figure) is provided on the wire connecting the anode 423 and the positive terminal of the power supply 428. A cathode 421 is provided inside the cathode chamber 422, and the cathode 421 is connected to the negative terminal of the power supply 428 via a wire.

[0103] The ammonia nitrogen collection chamber 425 is directly connected to the microbial protein production unit 3. The connection method is the same as that between the culture medium unit 6 and the microbial protein production unit 3 described above, and will not be repeated here. Alternatively, the ammonia nitrogen collection chamber 425 is connected to the microbial protein production unit 3 through either the first culture medium unit 6 or the second culture medium unit 7.

[0104] A first cation exchange membrane 426 is installed between the anode chamber 424 and the cathode chamber 422, and a second cation exchange membrane 427 is installed between the cathode chamber 424 and the ammonia nitrogen collection chamber 425. These membranes can effectively prevent other ions from interfering with the ammonia nitrogen collection process, ensuring selective permeation and high-purity recovery of ammonia nitrogen.

[0105] The anode 423 is connected to the positive terminal of the power supply 428 via a wire, and a resistor is installed on the wire connecting the anode 423 and the positive terminal of the power supply 428. The cathode 421 is connected to the negative terminal of the power supply 428 via a wire. This design allows the system to precisely control the current intensity, thereby regulating the rate and efficiency of the electrochemical reaction and ensuring the stable operation of the system.

[0106] The ammonia nitrogen collection chamber 425 can be directly or via the first culture medium unit 6 or the second culture medium unit 7 to the microbial protein production unit 3, ensuring that ammonia nitrogen can efficiently enter the microbial growth environment. This maximizes the recovery of nitrogen resources in wastewater and converts them into high-value-added microbial protein.

[0107] Reference Figures 1-5 The microbial protein production unit 3 includes a spray reactor, a first bubble reactor, a second bubble reactor, an airlift reactor, a trickle bed reactor, a bioreactor, and / or a hollow fiber membrane bioreactor.

[0108] The microbial protein production unit 3 is connected to the second peristaltic pump 11 through a second pipeline, and the medium flowing in the second pipeline is gas or gas-liquid mixture.

[0109] Different types of reactors, such as spray reactors, bubble reactors, airlift reactors, trickle bed reactors, bioreactors, and hollow fiber membrane bioreactors, can all provide growth environments for MOB and SOB. Each reactor has its unique advantages, and the most suitable configuration can be selected according to specific process requirements.

[0110] Spray reactors are suitable for efficient gas-liquid contact and are ideal for processing liquid ammonia nitrogen or mixing culture medium components with gases. Fluidized beds offer high mass transfer efficiency and good mixing properties.

[0111] Yes, it promotes rapid microbial growth. Trickling bed reactors are suitable for treating high concentrations of organic matter and can maintain a high microbial density. Bioreactors are highly flexible, and operating conditions can be adjusted as needed. Hollow fiber membrane bioreactors have efficient separation capabilities, enabling effective separation of microorganisms from products.

[0112] The microbial protein production unit 3 is connected to the second peristaltic pump 11 via a second pipeline, enabling efficient transport of gas or gas-liquid mixtures within the system. This design not only improves the system's flexibility but also ensures seamless connectivity between the components.

[0113] When liquid ammonia nitrogen and culture medium components are not involved, the medium in the second pipeline is gas; when liquid ammonia nitrogen and culture medium components are involved, they enter from above the microbial protein production unit 3, and the mixed gas carries the liquid through the second pipeline into the microbial protein production unit 3.

[0114] The air outlet is connected to the waste gas collection device, the material outlet is connected to the microbial protein collection device 5, the material inlet is connected to the culture medium unit, and the air inlet is connected to the second peristaltic pump 11.

[0115] Reference Figure 6When the microbial protein production unit 3 is a bioreactor, the bioreactor includes a first stirring motor 311, a first discharge port 312, a first feed port 313, a first air inlet 314, a first air outlet 315, a hollow fiber tube 316, a heating jacket 317, a first stirring paddle 318, and a hollow fiber tube winding frame 319. A heating jacket 317 is installed outside the bioreactor body, and the first stirring motor 311 is installed on the top of the bioreactor body. The first stirring motor 311 is rotatably connected to the first stirring paddle 318 located inside the bioreactor body. The hollow fiber tube 316 is mounted on the hollow fiber tube winding frame 319 and located inside the bioreactor body. The hollow fiber tube 316 is spiral-shaped. The top of the bioreactor is provided with the first discharge port 312, the first feed port 313, the first air inlet 314, and the first air outlet 315. The first discharge port 312 is connected to the microbial protein collection device 5, and the first feed port...

[0116] 313 is connected to the culture medium unit, the first air inlet 314 is connected to the second peristaltic pump 11, and the first air outlet...

[0117] 315 is connected to the exhaust gas collection device 12.

[0118] See Figure 7 When the microbial protein production unit 3 is a spray reactor, the spray reactor includes a second stirring motor 321, a second air outlet 322, a first nozzle 323, a reactor mounting frame 324, a demister 325, a second stirring paddle 326, a second discharge port 327, a second inlet 328, a first gas-liquid mixture inlet 329, a first auxiliary gas distribution pipe 330, and a gas-liquid mixture conveying pipe. The spray reactor body is mounted on the reactor mounting frame 324. The upper end of the spray reactor body is provided with the first gas-liquid mixture inlet 329 and a gas-liquid mixture conveying pipe arranged horizontally inside the spray reactor body. The first gas-liquid mixture inlet 329 is the inlet of the gas-liquid mixture conveying pipe. Located outside the hollow fiber membrane bioreactor, a first gas-liquid mixture inlet 329 is connected to a second peristaltic pump 11. Multiple first nozzles 323 are installed at the lower end of the gas-liquid mixture conveying pipe, and at least one first auxiliary gas distribution pipe 330 is installed at the lower end of the gas-liquid mixture conveying pipe. A demister 325 is installed below the gas-liquid mixture conveying pipe. A second feed inlet 328 is located on the outer side of the middle of the spray reactor and is connected to the culture medium unit. A second discharge outlet 327 is located at the lower end of the spray reactor and is connected to a microbial protein collection device 5. A second stirring motor 321 is installed at the top of the spray reactor, and the second stirring motor 321 is connected to a second stirring paddle 326 located inside the spray reactor.

[0119] The second air outlet 322 at the top of the spray reactor is connected to the waste gas collection device 12 via a rotating connection.

[0120] See Figure 8 When the microbial protein production unit 3 is a first bubbling reactor, the first bubbling reactor includes a bubbling reactor body, a third air inlet 331, a third air outlet 332, a third discharge outlet 333, a first air distribution pipe 334, and a third feed inlet 335. The first air distribution pipe 334 is located inside the first bubbling reactor body, and the end of the first air distribution pipe 334 is the third air inlet 331. The third air inlet 331 is located at the top of the first bubbling reactor body. The top of the first bubbling reactor body is also provided with a third air outlet 332. The middle part of the first bubbling reactor body is provided with a third feed inlet 335, and the bottom of the bubbling reactor body is the third discharge outlet 333.

[0121] See Figure 9 When the microbial protein production unit 3 is an airlift reactor, the airlift reactor includes an airlift reactor body, a fourth air inlet 341, a fourth air outlet 342, a fourth discharge outlet 343, a second air distribution pipe 344, an airlift baffle 345, and a fourth feed inlet 346. The second air distribution pipe 344 is located inside the airlift reactor body, and the end of the second air distribution pipe 344 is the fourth air inlet 341. The fourth air inlet 341 is located at the top of the airlift reactor body. The top of the airlift reactor body is also provided with a fourth air outlet 342. The airlift baffle 345 is provided inside the airlift reactor body. The lateral distance between the two airlift baffles 345 is greater than the lateral width of the second air distribution pipe 344. The fourth feed inlet 346 is located in the middle of the airlift reactor body, and the bottom of the airlift reactor body is the fourth discharge outlet 343.

[0122] See Figure 10The microbial protein production unit 3 is a second bubble-type reactor, which is a bubble-type reactor with a liquid external circulation device. The second bubble-type reactor includes a second bubble-type reactor body, a fifth air inlet 351, a fifth air outlet 352, an external circulation feed inlet 353, a fifth discharge outlet 355, a third air distribution pipe 356, a fifth feed inlet 357, and a fifth peristaltic pump 354. The third air distribution pipe 356 is located inside the second bubble-type reactor body, and the end of the third air distribution pipe 356 is the fifth air inlet 351. The fifth air inlet 351 is located at the top of the second bubble-type reactor body. The top of the second bubble-type reactor body is also provided with a fifth air outlet 352. The middle part of the second bubble-type reactor body is provided with a fifth feed inlet 357. The bottom of the bubbling reactor body is the fifth outlet 355, and the fifth outlet 355 and the external circulation inlet 353 are connected by the fifth peristaltic pump 354. A branch pipeline is set in the pipeline between the fifth outlet 355 and the fifth peristaltic pump 354, and the branch pipeline is connected to the microbial protein collection device 5.

[0123] See Figure 11 When the microbial protein production unit 3 is a trickle bed reactor, the trickle bed reactor includes a trickle bed reactor body, a sixth gas outlet 361, a second nozzle 362, a microbial attachment packing 363, a sixth discharge outlet 364, a second auxiliary gas distribution pipe 365, and a second gas-liquid mixture inlet 366. The upper end of the trickle bed reactor body is provided with the second gas-liquid mixture inlet 366 and a gas-liquid mixing and conveying pipe horizontally disposed inside the trickle bed reactor body. The second gas-liquid mixture inlet 366 is the inlet of the gas-liquid mixing and conveying pipe. Below the gas-liquid mixing and conveying pipe, the second nozzle 362 and the second auxiliary gas distribution pipe 365 are disposed. The interior of the trickle bed reactor body is provided with the microbial attachment packing 363 and the trickle bed reactor...

[0124] The top of the reactor body is provided with a sixth air outlet 361, and the bottom of the trickle bed reactor body is provided with a sixth discharge outlet 364.

[0125] See Figure 12When the microbial protein production unit 3 is a hollow fiber membrane bioreactor, the hollow fiber membrane bioreactor includes a hollow fiber membrane bioreactor body, a seventh outlet 371, a hollow fiber tube outlet 372, a hollow fiber tube assembly 373, a seventh discharge outlet 374, a hollow fiber tube inlet 375, and a seventh feed inlet 376. The seventh outlet 371 is located at the top of the hollow fiber membrane bioreactor body, the seventh feed inlet 376 is located in the middle of the hollow fiber membrane bioreactor body, the seventh discharge outlet 374 is located at the bottom of the hollow fiber membrane bioreactor body, the hollow fiber tube assembly 373 is installed inside the hollow fiber membrane bioreactor body, the upper end of the hollow fiber tube assembly 373 is the hollow fiber tube outlet 372, which is located outside the hollow fiber membrane bioreactor body, and the lower end of the hollow fiber tube assembly 373 is the hollow fiber tube inlet 375, which is located outside the hollow fiber membrane bioreactor body.

[0126] Reference Figures 1-5 The system also includes a sulfur source supply device, which includes a hydrogen sulfide gas supply device 13, a first culture medium unit 6 or a second culture medium unit 7 and / or a sulfur salt storage device 14. When the sulfur source supply device is a hydrogen sulfide gas supply device 13, the hydrogen sulfide gas supply device 13 is connected to the microbial protein production unit 3 through a second peristaltic pump 11. Of course, it can also be connected to the microbial protein production unit 3 independently through a peristaltic pump. At the same time, the anaerobic digester may not share the second peristaltic pump 11 with the oxygen supply device.

[0127] When the sulfur source supply device consists of the first culture medium unit 6, the second culture medium unit 7, and / or the sulfur salt storage device 14, the first culture medium unit 6, the second culture medium unit 7, and / or the sulfur salt storage device 14 can also be connected to the microbial protein production unit 3 individually via the second peristaltic pump 11, or the culture medium unit 6 and / or the sulfur salt storage device 14 can be connected to the microbial protein production unit 3 via the first peristaltic pump 8. Alternatively, the first culture medium unit 6, the second culture medium unit 7, and the sulfur salt storage device 14 can be connected to the microbial protein production unit 3 via different peristaltic pumps.

[0128] When hydrogen sulfide gas is used as the sulfur source, it is directly delivered to the microbial protein production unit 3 via a second peristaltic pump 11. This design allows for precise control of the hydrogen sulfide supply, ensuring that microorganisms such as SOB receive sufficient sulfur for growth and metabolism.

[0129] When the culture medium unit 6 or the sulfur storage device 14 is used as the sulfur source, the sulfur source can be delivered to the microbial protein production unit 3 via the second peristaltic pump 11 or the first peristaltic pump 8. This method provides greater flexibility, allowing the selection of the most suitable supply route based on actual needs.

[0130] By offering multiple sulfur source supply options, the system boasts greater redundancy and flexibility. If one supply method fails, it can be quickly switched to another, ensuring continuous system operation.

[0131] Thanks to its modular design, each component is easy to maintain and replace, reducing system downtime and improving overall operational stability.

[0132] The embodiments of this application have now been described in detail. To avoid obscuring the concept of this application, some details known in the art have not been described. Those skilled in the art can fully understand how to implement the technical solutions disclosed herein based on the above description.

Claims

1. A system for co-treatment of organic waste and production of microbial protein, characterized by, The system comprises an oxygen supply device (1), an anaerobic digestion reactor (2), a microbial protein production unit (3), an ammonia nitrogen collection unit (4) and a microbial protein collection device (5); wherein: The oxygen supply device (1) is in communication with the microbial protein production unit (3) through a pipeline; the microbial protein production unit (3) is filled with MOB and SOB mixed strains, one end of the microbial protein production unit (3) is in communication with the ammonia nitrogen collection unit (4), one end of the microbial protein production unit (3) is in communication with the microbial protein collection device (5), and one end of the microbial protein production unit (3) is in communication with one end of the anaerobic digestion reactor (2) through a pipeline; the other end of the anaerobic digestion reactor (2) is in communication with the ammonia nitrogen collection unit (4) through a pipeline.

2. The system for co-treating organic waste and producing microbial protein according to claim 1, wherein, The system further comprises a culture medium unit, the culture medium unit comprises a first culture medium unit (6) and a second culture medium (7), the first culture medium unit (6) and the second culture medium (7) are directly or indirectly in communication with the microbial protein production unit (3); the first culture medium unit (6) and the second culture medium (7) are structurally identical; The culture medium unit comprises a culture medium device body and a first peristaltic pump (8), the culture medium device body is directly in communication with the microbial protein production unit (3) through the first peristaltic pump (8), or the culture medium device body is in communication with the pipeline between the oxygen supply device (1) and the microbial protein production unit (3) through the first peristaltic pump (8), or one end of the culture medium device body is in communication with the ammonia nitrogen collection unit (4) and the other end is in communication with the microbial protein production unit (3).

3. The system for co-treating organic waste and producing microbial protein according to claim 2, wherein, The system further comprises an oxygen purification device (9), a methane purification device (10) and a second peristaltic pump (11), the oxygen supply device (1) is in communication with the inlet of the second peristaltic pump (11) through the oxygen purification device (9), the anaerobic digestion reactor (2) is in communication with the inlet of the second peristaltic pump (11) through the methane purification device (10), and the outlet of the second peristaltic pump (11) is in communication with the microbial protein production unit (3); the second peristaltic pump (11) can also be in communication with the culture medium unit.

4. The system for co-treating organic waste and producing microbial protein according to claim 3, wherein, The ammonia nitrogen collection unit (4) comprises a nitrogen stripping device (41) and / or an electrochemical reaction device (42); The anaerobic digestion reactor (2) is in communication with one end of the ammonia nitrogen collection unit (4), and the other end of the ammonia nitrogen collection unit (4) is directly or indirectly in communication with the microbial protein production unit (3).

5. The system for co-treating organic waste and producing microbial protein according to claim 4, wherein, When the ammonia nitrogen collection unit (4) comprises the nitrogen stripping device (41), the system further comprises a condensation well (414), a heating device (413), a third peristaltic pump (415), a gas distributor (412) and a stripping chamber (411), the gas inlet of the nitrogen stripping device (41) is in communication with the third peristaltic pump (415) through a first pipeline, the third peristaltic pump (415) is in communication with the anaerobic digestion reactor (2) The end of the first pipeline is connected with the gas distributor (412) arranged in the stripping chamber (411), the gas outlet of the nitrogen stripping device (41) is communicated with the gas inlet of the condensation well (414), and the gas outlet of the condensation well (414) is communicated with the microbial protein production unit (3).

6. The organic waste synergistic treatment and microbial protein production system according to claim 5, wherein the anaerobic digestion reactor (2) comprises a first pipeline, and the first pipeline is connected with the anaerobic digestion reactor (2) and the ammonia nitrogen collection unit (4) and is communicated with the first pipeline of the ammonia nitrogen collection unit (4). The system is characterized by, When the ammonia nitrogen collection unit (4) comprises the electrochemical reaction device (42), the electrochemical reaction device (42) comprises a cathode (421), a cathode chamber (422), an anode (423), an anode chamber (424), an ammonia nitrogen collection chamber (425), a first cation exchange membrane (426), a second cation exchange membrane (427) and a power supply (428), the anode chamber (424), the cathode chamber (422) and the ammonia nitrogen collection chamber (425) are arranged in sequence, the anode chamber (424) is communicated with the anaerobic digestion reactor (2), the first cation exchange membrane (426) is arranged between the anode chamber (424) and the cathode chamber (422), and the second cation exchange membrane (427) is arranged between the cathode chamber (422) and the ammonia nitrogen collection chamber (425); the anode (423) is arranged in the anode chamber (424), the anode (423) is connected with the positive electrode of the power supply (428) through a wire, and a resistor is arranged on the wire connecting the anode (423) and the positive electrode of the power supply (428); the cathode (421) is arranged in the cathode chamber (422), and the cathode (421) is connected with the negative electrode of the power supply (428) through a wire. The ammonia nitrogen collection chamber (425) is communicated with the microbial protein production unit (3), or the ammonia nitrogen collection chamber (425) is communicated with the microbial protein production unit (3) through the medium unit.

7. The system for co-treating organic waste and producing microbial protein according to claim 6, wherein, The microbial protein production unit (3) comprises a spray reactor, a first bubble reactor, a second bubble reactor, a gas lift reactor, a trickle bed reactor, a bioreactor and / or a hollow fiber membrane bioreactor. The microbial protein production unit (3) is communicated with the second peristaltic pump (11) through a second pipeline, and a gas or a gas-liquid mixture flows in the second pipeline.

8. The organic waste synergistic treatment and microbial protein production system according to claim 7, wherein the anaerobic digestion reactor (2) comprises a first pipeline, and the first pipeline is connected with the anaerobic digestion reactor (2) and the ammonia nitrogen collection unit (4) and is communicated with the first pipeline of the ammonia nitrogen collection unit (4). When the microbial protein production unit (3) is a bioreactor, the bioreactor comprises a first stirring motor (311), a first discharge port (312), a first feeding port (313), a first air inlet (314), a first air outlet (315), a hollow fiber tube (316), a heating jacket (317), a first stirring paddle (318), and a hollow fiber tube winding rack (319); the bioreactor body is externally provided with the heating jacket (317), the bioreactor body top is provided with the first stirring motor (311), the first stirring motor (311) is rotationally connected with the first stirring paddle (318) located inside the bioreactor body, the hollow fiber tube (316) is installed on the hollow fiber tube winding rack (319) and located inside the bioreactor body, the hollow fiber tube (316) is in a spiral shape, the bioreactor top is provided with the first discharge port (312), the first feeding port (313), the first air inlet (314), and the first air outlet (315) respectively, the first discharge port (312) is in communication with the microbial protein collection device (5), the first feeding port (313) is in communication with the culture medium unit, the first air inlet (314) is in communication with the second peristaltic pump (11), and the first air outlet (315) is in communication with the waste gas collection device (12); When the microbial protein production unit (3) is a spray reactor, the spray reactor comprises a second stirring motor (321), a second gas outlet (322), a first nozzle (323), a reactor fixing frame (324), a defoamer (325), a second stirring paddle (326), a second discharge port (327), a second feed port (328), a first gas-liquid mixture inlet (329), a first auxiliary air distribution pipe (330), and a gas-liquid mixture conveying pipe. The spray reactor body is mounted on the reactor fixing frame (324). The first gas-liquid mixture inlet (329) and the gas-liquid mixture conveying pipe transversely arranged inside the spray reactor body are arranged at the upper end of the spray reactor body. The first gas-liquid mixture inlet (329) is the inlet of the gas-liquid mixture conveying pipe. The first gas-liquid mixture inlet (329) is arranged outside the hollow fiber membrane bioreactor. The first gas-liquid mixture inlet (329) is in communication with the second peristaltic pump (11). The gas-liquid mixture conveying pipe is provided with a plurality of first nozzles (323) at the lower end thereof. At least one first auxiliary air distribution pipe (330) is arranged at the lower end of the gas-liquid mixture conveying pipe. The defoamer (325) is arranged below the gas-liquid mixture conveying pipe. The second feed port (328) is arranged at the middle part outside the spray reactor. The second feed port (328) is in communication with the culture medium unit. The second discharge port (327) is arranged at the lower end of the spray reactor. The second discharge port (327) is in communication with the microbial protein collection device (5). The second stirring motor (321) is mounted at the top of the spray reactor. The second stirring motor (321) is rotationally connected with the second stirring paddle (326) arranged inside the spray reactor. The second gas outlet (322) at the top of the spray reactor is in communication with the waste gas collection device (12).

9. The system for treating organic waste in a coordinated manner and producing microbial protein according to claim 7, characterized in that, When the microbial protein production unit (3) is a first bubble reactor, the first bubble reactor comprises a bubble reactor body, a third gas inlet (331), a third gas outlet (332), a third discharge port (333), a first air distribution pipe (334), and a third feed port (335). The first air distribution pipe (334) is arranged inside the first bubble reactor body. The end of the first air distribution pipe (334) is the third gas inlet (331). The third gas inlet (331) is arranged at the top of the first bubble reactor body. The top of the first bubble reactor body is also provided with the third gas outlet (332). The middle part of the first bubble reactor body is provided with the third feed port (335). The bottom of the first bubble reactor body is the third discharge port (333). When the microbial protein production unit (3) is an air-lift reactor, the air-lift reactor comprises an air-lift reactor body, a fourth gas inlet (341), a fourth gas outlet (342), a fourth discharge port (343), a second gas distribution pipe (344), an air-lift baffle (345), and a fourth feed inlet (346). The second gas distribution pipe (344) is arranged inside the air-lift reactor body. The end of the second gas distribution pipe (344) is the fourth gas inlet (341), which is arranged at the top of the air-lift reactor body. The top of the air-lift reactor body is also provided with the fourth gas outlet (342). The inside of the air-lift reactor body is provided with the air-lift baffle (345). The two air-lift baffles (345) are laterally spaced apart by a distance greater than the lateral width of the second gas distribution pipe (344). The middle of the air-lift reactor body is provided with the fourth feed inlet (346). The bottom of the air-lift reactor body is the fourth discharge port (343). When the microbial protein production unit (3) is a second bubble reactor, the second bubble reactor is a bubble reactor with a liquid external circulation device. The second bubble reactor comprises a second bubble reactor body, a fifth gas inlet (351), a fifth gas outlet (352), an external circulation feed inlet (353), a fifth discharge port (355), a third gas distribution pipe (356), a fifth feed inlet (357), and a fifth peristaltic pump (354). The third gas distribution pipe (356) is arranged inside the second bubble reactor body. The end of the third gas distribution pipe (356) is the fifth gas inlet (351), which is arranged at the top of the second bubble reactor body. The top of the second bubble reactor body is also provided with the fifth gas outlet (352). The middle of the second bubble reactor body is provided with the fifth feed inlet (357) and the external circulation feed inlet (353). The bottom of the bubble reactor body is the fifth discharge port (355). The fifth discharge port (355) and the external circulation feed inlet (353) are connected through the fifth peristaltic pump (354). The pipeline between the fifth discharge port (355) and the fifth peristaltic pump (354) is provided with a branch pipeline, which is connected to the microbial protein collection device (5). When the microbial protein production unit (3) is a trickle bed reactor, the trickle bed reactor comprises a trickle bed reactor body, a sixth gas outlet (361), a second nozzle (362), microbial adhesion filler (363), a sixth discharge port (364), a second auxiliary air distribution pipe (365), and a second gas-liquid mixture inlet (366). The second gas-liquid mixture inlet (366) is provided at the upper end of the trickle bed reactor body and a gas-liquid mixture conveying pipe is transversely arranged inside the trickle bed reactor body. The second gas-liquid mixture inlet (366) is the inlet of the gas-liquid mixture conveying pipe. The second nozzle (362) and the second auxiliary air distribution pipe (365) are arranged below the gas-liquid mixture conveying pipe. The trickle bed reactor body is provided with microbial adhesion filler (363) inside. The trickle bed reactor body is provided with a sixth gas outlet (361) at the top. The trickle bed reactor body is provided with a sixth discharge port (364) at the bottom. When the microbial protein production unit (3) is a hollow fiber membrane bioreactor, the hollow fiber membrane bioreactor comprises a hollow fiber membrane bioreactor body, a seventh gas outlet (371), a hollow fiber tube gas outlet (372), a hollow fiber tube assembly (373), a seventh discharge port (374), a hollow fiber tube gas inlet (375), and a seventh feed inlet (376). The seventh gas outlet (371) is arranged at the top of the hollow fiber membrane bioreactor body. The seventh feed inlet (376) is arranged in the middle of the hollow fiber membrane bioreactor body. The seventh discharge port (374) is arranged at the bottom of the hollow fiber membrane bioreactor body. The hollow fiber tube assembly (373) is installed inside the hollow fiber membrane bioreactor body. The upper end of the hollow fiber tube assembly (373) is the hollow fiber tube gas outlet (372), which is located outside the hollow fiber membrane bioreactor body. The lower end of the hollow fiber tube assembly (373) is the hollow fiber tube gas inlet (375), which is located outside the hollow fiber membrane bioreactor body.

10. The system for co-treating organic waste and producing microbial protein according to claim 3, wherein, The system further comprises a sulfur source supply device, which comprises a hydrogen sulfide gas supply device (13), a culture medium unit and / or a sulfur salt storage device (14). When the sulfur source supply device is the hydrogen sulfide gas supply device (13), the hydrogen sulfide gas supply device (13) is in communication with the microbial protein production unit (3) through the second peristaltic pump (11). When the sulfur source supply device is the culture medium unit and / or the sulfur salt storage device (14), the culture medium unit and / or the sulfur salt storage device (14) are in communication with the microbial protein production unit (3) through the second peristaltic pump (11), or the culture medium unit and / or the sulfur salt storage device (14) are in communication with the microbial protein production unit (3) through the first peristaltic pump (8). ​

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