432 results about "Organic solid waste" patented technology

The invention belongs to the field of microbial electrochemistry and solid organic waste recycling, and discloses a microbial electrosynthesis enhanced solid wastewater hydrolysis and anaerobic digestion biogas high-value utilization system coupling microbial electrosynthesis, organic solid waste electrochemical-biological synergistic hydrolysis oxidation and anaerobic digestion. The system comprises a cathode chamber and an anode chamber which are separated by an ion exchange membrane, an electrochemical driving device and an anaerobic digestion unit communicated with the anode chamber. And the cathode chamber is provided with a cathode electrode and an anaerobic acetic acid production microbial system and is communicated with biogas generated by anaerobic digestion, so that carbon dioxide in the biogas is reduced at the cathode to generate acetic acid and methane-enriched gas is output. The anode chamber is provided with an anode electrode, organic solid waste and a hydrolytic microorganism system are added, electrochemical-biological synergistic hydrolytic oxidation of the organic solid waste and hydrolysates of the organic solid waste is used as an anode reaction, oxygen evolution is inhibited, and oxygen transmembrane migration is reduced; and the hydrolysate in the anode chamber flows into the anaerobic digestion unit to produce biogas, so that the integrated operation of solid wastewater hydrolysis and biogas upgrading is realized.

The invention discloses a modular combined organic solid waste horizontal aerobic fermentation tank, and relates to the technical field of fertilizer manufacturing, one side of a first end cover mechanism is sequentially connected with at least one group of fermentation mechanism, one side of the outer part of each group of fermentation mechanism is provided with a docking mechanism, and each fermentation mechanism comprises a fermentation tank, a heating cavity, a circulation insertion frame and an insertion groove. The modular combined design is adopted, the core fermentation unit is based on multiple fermentation mechanisms, the number of the fermentation mechanisms can be flexibly increased or decreased through the movable frame according to the actual treatment capacity requirement of organic solid waste, and the whole set of equipment does not need to be replaced; according to the invention, energy waste caused by idle large tanks during small and medium-scale treatment can be avoided, additional pipelines and control coordination cost for parallel connection of multiple small tanks during large-scale treatment can be saved, the system is adaptive to treatment scenes of organic solid wastes of different types and different scales such as municipal sludge, agricultural straws, kitchen garbage, livestock manure and the like, and the universality and application economy of equipment are improved.

The invention provides a high-crystallinity modified iron oxide as well as a preparation method and application thereof, and relates to the technical field of organic solid waste treatment. The preparation method comprises the following steps: preparing a precursor MIL-88B by utilizing a hydrothermal method; the precursor MIL-88B is subjected to calcination treatment, and an iron oxide with the MIL-88B as the precursor is obtained; the temperature condition of the calcination treatment is 550-850 DEG C. The high-crystallinity modified iron oxide prepared by the preparation method improves methane production efficiency and stability, avoids competition of iron reducing bacteria, is stable in long-term operation and low in cost, and has both environmental and economic benefits.

The invention discloses a high-efficiency aerobic fermentation corncob-based biological conditioner and application thereof. Aiming at the common problems of unstable carrier effect, poor environmental adaptability, easiness in inactivation of the microbial inoculum, difficulty in continuously exerting efficacy and the like existing in the existing composting microbial inoculum, the agricultural waste corncob with a porous structure and excellent water-retaining and fertilizer-retaining natural characteristics is pretreated and modified; and the immobilized carrier of the aerobic fermentation inoculant with high activity and high stability is constructed. The carrier matrix can be used for efficiently loading and remarkably improving the expanding culture core aerobic fermentation functional flora to prepare a solid biological conditioner. The corncob-based biological conditioner is applied to the composting process of organic solid wastes, promotes the humification process of organic materials, shortens the composting period, improves the fermentation efficiency of the materials, and effectively improves the resource utilization level of the organic solid wastes.

The invention relates to the technical field of organic solid waste resourceful treatment, in particular to a method for enhancing degradation of biodegradable plastic compost based on white-rot fungi and manganese modified charcoal. According to the method, manganese modified charcoal and white-rot fungi are subjected to synergistic treatment, and the efficient method for intensively degrading the biodegradable plastic through aerobic composting is constructed. The method effectively overcomes the technical bottlenecks of slow degradation starting, long degradation period and easy generation of micro-plastic residues of the biodegradable plastic in traditional compost, and realizes rapid and thorough degradation of the biodegradable plastic. Besides, the method also promotes the conversion of humus precursor substances in the compost material and accelerates and stabilizes the synthesis of humus, so that the decomposition degree of the compost product is remarkably improved, and the quality and environmental safety of the final compost product are synchronously improved while the biodegradable plastic is efficiently degraded. And an efficient and reliable solution is provided for recycling of organic solid wastes and degradation of biodegradable plastic compost.

The invention relates to the technical field of organic solid waste recycling and hydrogen energy, in particular to a hydrogen, electricity and heat co-production system and method for organic solid waste combustion and synergistic gasification. Organic solid waste is divided into high-calorific-value organic solid waste and low-calorific-value organic solid waste based on the calorific value and the water content, the high-calorific-value organic solid waste is used for calcining limestone, and the low-calorific-value organic solid waste is used for gasification; the organic solid wastes with different heat values and water contents are fully digested, and the problem of unstable operation caused by complex components of the organic solid wastes is solved. A three-stage energy gradient utilization module is constructed, and a traditional single power generation and single heat supply mode is innovated into a heat energy, electric energy and hydrogen energy co-production mode. A calcium-based material circulation system is systematically constructed, and hydrogen production-pollution control synergic integration is realized. The method has remarkable economic and environment-friendly benefits, and a solution is provided for high-value utilization of organic solid waste and preparation of green hydrogen.

The invention relates to the technical field of soil improvement and remediation, in particular to an acid soil conditioner and a preparation method thereof. The acidic soil conditioner comprises an organic solid waste material and inorganic industrial solid waste, and the mass ratio of the organic solid waste material to the inorganic industrial solid waste is (0.5-1): 1. The organic solid waste material is prepared from the following components in parts by mass: 20 to 40 parts of modified charcoal and 10 to 30 parts of solid waste-based sludge; the inorganic industrial solid waste comprises 5-10 parts of ammonia alkali white mud, 8-15 parts of modified waste glass and 0.5-2 parts of gypsum. According to the acidic soil conditioner provided by the invention, solid wastes are effectively utilized, and meanwhile, the problem that soil acid-base neutralization and Al < 3 + > immobilization cannot be taken into consideration in related technologies is solved.

The invention discloses a pretreatment method for increasing the yield of anaerobic fermentation methane of a lignocellulose material, and belongs to the technical field of high-efficiency anaerobic fermentation methane production of organic solid waste. The method comprises the following steps: (1) crushing straws; (2) mixing the straw powder and deionized water according to a mass ratio of 1: (19-21), stirring at a rotating speed of 120-180r / min, treating for 22-26h, fully and uniformly mixing, adjusting the pH value of the system to 3.4-3.7, adding 0.08-0.12 wt% of cellulase according to the mass of the straw, and carrying out enzymolysis at 49-51 DEG C for 2-4d to obtain an enzymatic hydrolysate; (3) yeast pre-fermentation: inoculating 4-6% v / v activated angel high-activity dry yeast into the enzymatic hydrolysate in the step (2) for anaerobic pre-fermentation, wherein the pre-fermentation time is 16-20 hours; and (4) anaerobic fermentation for methane production: adding 20-30% v / v of introduction sludge into the fermentation system in the step (3), and carrying out anaerobic fermentation for methane production, wherein the fermentation temperature is 36-38 DEG C. Compared with the prior art, the method has the advantages of being high in adaptability, short in treatment period, good in economic benefit, free of environmental pollution and the like, and has certain guidance and inspiration effects on engineering of producing methane from straw.

The invention discloses an organic solid waste resource information management method and system based on big data, and relates to the technical field of organic solid waste treatment, and the method comprises the following steps: S100, deploying a multi-mode sensor network at key nodes of organic solid waste treatment equipment, and collecting physical and chemical parameters, equipment operation states and environmental parameters in real time; s200, performing real-time cleaning, dynamic threshold abnormal value elimination and normalization processing on the data in the step S100 through an edge calculation unit, and generating a standardized feature vector; s300, establishing a block chain encryption federal learning pool; s400, based on the learning pool data output in the step S300, generating a scarce scene processing scheme in combination with generative data enhancement and a digital mirror image deduction technology, and outputting a regulation and control instruction through a multi-objective optimization model; and S500, issuing the regulation and control instruction in the step S400 to an execution mechanism, synchronously generating an energy utilization rate, carbon footprint tracking and economy analysis board, and feeding back and correcting federal learning pool parameters according to an execution result.

The invention provides a composite catalyst for supercritical water gasification hydrogen production and a preparation method and application thereof, and relates to the technical field of organic solid waste recycling, the composite catalyst comprises a carrier, an active component and an auxiliary agent; the carrier is prepared from a ZrO2 mesoporous material co-doped with Ce and La; the active component comprises Ni-Co bimetallic nanoparticles, and the Ni-Co bimetallic nanoparticles are subjected to vulcanization treatment to form a core-shell structure in which Ni-Co metal is wrapped by sulfur; and the auxiliary agent comprises MoO3. According to the composite catalyst, a Ce-La-ZrO2 mesoporous material serves as a carrier, Ni-Co bimetallic nanoparticles serve as an active component, a core-shell structure (NiCo at S) is formed after vulcanization treatment, the surface of the core-shell structure is covered with a layer of sulfur atoms, carbon deposition can be effectively inhibited, the chlorine poisoning resistance of the catalyst is enhanced through the added MoO3 auxiliary, and the service life of the catalyst is prolonged.

The present invention provides a method for enhancing the removal of resistance genes and promoting humification in aerobic composting. The method comprises the following steps: mixing livestock and poultry manure with a composting auxiliary material, adjusting the moisture content to 55%-65%, and adding a MnFe2O4 additive to obtain a composting raw material; aerobically composting the material, turning the compost every 2-3 days during a temperature rise period and a high temperature period, and every 7 days during a temperature fall period and a mature period, with the aerobic composting time being 20-30 days. Compared with a conventional composting method, the relative abundances of sulfonamide, tetracycline, macrolide, and aminoglycoside resistance genes in the mature compost obtained by the method are reduced by 60%-73%, 50%-57%, 20%-80%, and 45%-66%, respectively, and the humic acid (HA) content is increased by about 15%. Meanwhile, the method achieves efficient harmlessness and resource utilization of organic solid waste, and has the potential for large-scale production.

A method for enhancing resistance gene removal and promoting humification in an aerobic compost, which method comprises mixing livestock and poultry manure with compost auxiliary materials, adjusting the water content, adding an MnFe2O4 additive, and then performing aerobic composting for 20-30 days. Compared with conventional composting methods, the mature compost product obtained by means of the method exhibits a 60%-73% reduction in the relative abundance of sulfonamide resistance genes, a 50%-57% reduction in tetracycline resistance genes, a 20%-80% reduction in macrolide resistance genes, and a 45%-66% reduction in aminoglycoside resistance genes, and shows approximately a 15% increase in humic acid HA. This method achieves both efficient harmless treatment and resource utilization of organic solid waste.

The invention discloses a composite high-temperature bacterial agent and a method for promoting humification of compost by using the composite high-temperature bacterial agent. The composite high-temperature bacterial agent comprises at least one or two of bacillus thermotolans and Novibacillus thermophilus. The complex microbial inoculant disclosed by the invention is a thermophilic complex microbial inoculant, can directly utilize nutrient substances in organic solid wastes such as municipal sludge, livestock and poultry manure, agricultural residues, kitchen wastes and the like to grow and breed, and meanwhile, humus in compost is reduced; hydroxyl free radicals are continuously generated along with the change of anaerobic / aerobic alternating conditions of the compost, and the humification process of the compost is promoted through the free radicals.

The invention discloses a method for producing hydrogen by using organic solid waste, and relates to the technical field of new energy. The method comprises the following steps: classifying the organic solid wastes, screening out organic matters and combustible substances, mixing the organic matters and the combustible substances, and crushing into a homogeneous material with the particle size of less than or equal to 50mm; drying the homogenized material to obtain a dried material of which the water content is less than or equal to 8%; feeding the dried material into a rotary kiln pyrolyzing furnace, mixing the dried material with a heat carrier in the rotary kiln pyrolyzing furnace, heating the dried material by flue gas through the cylinder wall of the rotary kiln pyrolyzing furnace and the heat carrier, and pyrolyzing the dried material at the pyrolyzing temperature of 450-750 DEG C to obtain oil gas and pyrolyzing slag; mixing the pyrolysis residues with a cosolvent, preparing a glass body in a gasification melting furnace, mixing oil gas with water vapor, and reacting in a fixed bed reactor to prepare synthesis gas; and preparing the synthesis gas into hydrogen. The pyrolysis efficiency is remarkably improved, fuel consumption is reduced, system energy consumption is correspondingly reduced, and low-temperature efficient pyrolysis is achieved.

The invention provides an organic solid waste preheating-reaction-heat regeneration integrated device and a use method.The organic solid waste preheating-reaction-heat regeneration integrated device comprises a conveying pipe, a hollow shaft is installed in the conveying pipe, a spiral conveying assembly is arranged on the hollow shaft, and a feeding port is formed in the position, close to one end of the conveying pipe, of the outer wall of the conveying pipe; an outer sleeve is in threaded connection with the position, close to the feeding port, of the conveying pipe, a heat conduction oil inlet and a heat conduction oil outlet are formed in the outer sleeve, an oil supply assembly is connected between the heat conduction oil inlet and the heat conduction oil outlet, and the oil supply assembly is connected with a port of the hollow shaft and the spiral conveying assembly; a discharging port is formed in the position, close to the end of the other end of the conveying pipe, of the outer wall of the conveying pipe, and a heater is in threaded connection with the position, close to the discharging port, of the conveying pipe. According to the device, continuous heat exchange of the slurry fluid in the organic solid waste material is realized, and the treatment efficiency is improved.

The application discloses a solid waste treatment system and method based on gasification slag smoldering and organic solid waste pyrolysis, and belongs to the technical field of solid waste treatment. The system comprises a first reaction furnace and a second reaction furnace. The feeding mechanism, smoke outlet, heating mechanism and gas supply mechanism of the two reaction furnaces are combined and arranged. The condensing mechanism, flow distribution valve and gas purification / mixing device work cooperatively, and heat is transferred between the two reaction furnaces. The smoldering treatment of gasification slag and the pyrolysis treatment of carbon-rich organic solid waste can be accurately completed. The solid waste treatment system has simple system composition and convenient control. The high-value recycling of gasification slag and carbon-rich organic solid waste can be realized without using a large amount of external auxiliary energy. Low-oxygen CO-rich gas and pyrolysis semi-coke can be quickly prepared. The recycling rate of the available energy in the gasification slag and carbon-rich organic solid waste is improved. The treatment cost of the gasification slag and carbon-rich organic solid waste is reduced. The system has good economic value and practical value.

The invention provides an organic solid waste resource utilization disposal system and method.The system comprises a material collection module, an anaerobic fermentation module and a conversion separation module, the material collection module is used for collecting organic solid waste materials and controlling the organic solid waste materials to be conveyed to the anaerobic fermentation module; the anaerobic fermentation module is used for performing anaerobic fermentation on the collected organic solid waste materials to obtain a fermentation product and outputting the fermentation product to the conversion and separation module; wherein the fermentation product is used for representing a solid-liquid mixture after anaerobic fermentation; and the conversion and separation module is used for carrying out biodegradation on the fermentation product and carrying out split-flow treatment on the degradation product so as to respectively purify biogas in the degradation product and treat biogas residues in the degradation product to generate an organic fertilizer. The system can reduce external emission to the maximum extent, is efficient and environment-friendly, can fully realize resource utilization of organic solid wastes, and really constructs an environment-friendly and resource-circulating closed-loop treatment system.

The invention discloses an organic wet slurry low-temperature damp and hot coalification integrated reactor and system, and relates to the technical field of organic solid waste treatment. The system comprises a conveying system, a plurality of integrated reactor systems connected in parallel, a cooler, a solid-liquid separator and a central control unit. The integrated reactor system comprises an integrated reactor, a heater, a sensing unit and a reactor control unit. The integrated reactor adopts a unique inner and outer double-pipe layer design, and a heat exchange section, a heating section and a reaction section are sequentially formed, so that the integration of countercurrent flow heat exchange, heating and reaction is realized; a double-layer stirring wall scraper and a plurality of groups of ultrasonic vibrators are arranged in the heat exchanger, so that scales and cokes on a heat transfer surface can be removed on line; and through cooperative intelligent control of the reactor control unit and the central control unit, operation parameters and cleaning strategies are adjusted in real time. The industrial problems that in the traditional process, equipment is prone to being blocked, the heat transfer efficiency is low, and operation is unstable are solved, and efficient and long-period stable operation of coalification treatment of the organic wet slurry is achieved.

The present application discloses a new energy-based waste electricity pulse Joule heat treatment method and device for the cogeneration of organic solid waste, the method comprising: storing the electricity generated by wind energy and / or solar photovoltaic that cannot be connected to the grid as new energy-based waste electricity in a power storage device to form a power supply; utilizing the flash Joule heat formed by pulse discharge of the power supply to heat-treat the organic solid waste to generate gaseous products and solid-phase products; performing gas separation treatment on the gaseous products, and storing the separated gaseous products in a corresponding gas-phase storage system; performing solid separation treatment on the solid-phase products, and storing the separated solid-phase products in a corresponding solid-phase storage system to complete the deep resource treatment of the organic solid waste. The present application deeply utilizes the waste electricity from new energy sources that cannot be connected to the grid for the resource treatment of organic solid waste, and the generated gaseous products and solid-phase products can be applied to downstream fields, thereby improving the degree of resource utilization of organic solid waste.

The present application relates to the technical field of high-moisture organic solid waste drying, and particularly relates to a drying method of high-moisture organic solid waste. The technical scheme can provide carbon source for target bacteria, support water diffusion channels between solid waste blocks formed by high-moisture organic solid waste, diffuse non-bound water surrounded by multiple solid waste blocks from the water diffusion channels, degrade organic matters in the high-moisture organic solid waste, increase porosity and specific surface area of the high-moisture organic solid waste, and keep the temperature of the sunlight shed and the temperature of the target mixture in the drying process below 50 DEG C, which can ensure good living conditions of the target bacteria and reduce the risk of dust explosion caused by the increase of dust concentration in the late drying period due to the introduction of target organic matter. The target mixture receives sunlight radiation, continuously turns over and is driven by a fan, so as to realize drying of the high-moisture organic solid waste.

The invention discloses a method for enhancing compost humification synergistic gas emission reduction and tetracycline degradation through thermal activation peroxide, and relates to the technical field of compost. The method comprises the following steps: mixing livestock and poultry manure and 1-3cm crop straws according to a dry weight ratio of (1-3): 1, and adjusting the carbon-nitrogen ratio to (20-30): 1 to complete raw material pretreatment; when the temperature of the pile body is 25-35 DEG C, peroxide (hydrogen peroxide, peracetic acid or potassium persulfate) is sprayed and mixed uniformly in the form of an aqueous solution, the addition amount is 0.125-1.25% of the dry weight of the raw materials, the moisture content of the pile body is controlled to be 55-75%, and continuous or intermittent ventilation composting is carried out at the speed of 0.2-1.0 m < 3 > h <-1 >. According to the method, the peroxide is activated by utilizing self-produced heat of compost, external energy sources and chemical activators are not needed, triple effects of compost humification improvement, ammonia gas and greenhouse gas emission reduction and tetracycline degradation are realized, and the method is green, environment-friendly, low in cost and suitable for organic solid waste treatment.

The utility model discloses a dry anaerobic feeding system, and relates to the field of organic solid waste anaerobic fermentation treatment.The dry anaerobic feeding system comprises a material mixing assembly and a discharging assembly, the material mixing assembly comprises a material mixing pool, and a spiral feeder communicated with the material mixing pool is obliquely installed on the outer wall of one side of the material mixing pool; a horizontal stirrer is rotatably mounted on the inner wall of one side of the mixing tank, a plurality of discharging pipes communicated with the mixing tank are arranged on the outer wall of the bottom of the mixing tank, and the discharging pipes are connected with a discharging assembly. According to the device, the material conveying range is wide through the arrangement of the spiral feeder, particularly, agricultural waste materials such as straw can be efficiently conveyed, the automatic impurity removing function is achieved through the arrangement of the automatic impurity removing unit of the discharging assembly, materials containing sand, gravel and impurities and high in quality can be conveyed, and the conveying efficiency is improved. The problems of feeding difficulty, feeding blockage and the like of dry anaerobic fermentation are solved.

The embodiment of the invention discloses a construction method of a multi-source organic solid waste whole-process substance flow and energy flow metabolic network diagram and a related device. A basic theoretical analysis and research framework is set up; constructing an urban typical organic solid waste material flow model according to the basic theoretical analysis and research framework; and according to the urban typical organic solid waste material flow model, constructing a Yifen city typical organic solid waste metabolic network. It can be seen that the embodiment of the invention is beneficial for solving the following problems: 1, composition and characteristics of the organic solid waste can be better understood by establishing a substance flow and energy flow metabolic network diagram, so that a more efficient and more economical treatment process is designed; 2, through the metabolic network diagram, the influence of the organic solid waste treatment process on the environment can be better known, so that measures are taken to reduce the influence of the organic solid waste on the environment.

This utility model relates to the field of organic solid waste treatment technology, and in particular to an aerobic fermentation waste heat recovery system. The aerobic fermentation waste heat recovery system includes a feeding device, a fermentation device, and a heat recovery power generation device. The heat recovery power generation device includes a heat collection unit and a thermoelectric generator unit. The heat collection unit is inserted into the chamber and directly contacts the material to collect the heat generated during fermentation and transfer it to the thermoelectric generator unit, which converts the heat into electrical energy. Because the heat collection unit can directly contact the material, it can directly and efficiently capture the heat generated by microbial fermentation inside the pile, reducing heat loss during the transfer process. The aerobic fermentation waste heat recovery system achieves heat collection and electrical energy conversion solely through the cooperation of the heat collection unit and the thermoelectric generator unit, eliminating the need for complex steam collection pipes, plate heat exchangers, and water-vapor separators, resulting in a simpler overall structure and reducing the difficulty and cost of system installation, disassembly, and daily maintenance.

This invention discloses a solid heat carrier heating device, comprising a pyrolysis reactor, a fluidized bed furnace, a gas-solid separator, a mechanical return feeder, and a flue gas generator. The pyrolysis reactor is used to feed solid pyrolysis reactants into the fluidized bed furnace for reaction. The gas-solid separator is used to separate the reaction products in the fluidized bed furnace into gas and solid components to obtain a solid heat carrier, which is then transported to the fluidized bed furnace for reaction via the mechanical return feeder. The flue gas generator is used to supply flue gas into the fluidized bed furnace to heat the solid pyrolysis reactants. This invention also discloses a flue gas generator. The solution of this invention is applicable to the pyrolysis of organic solid wastes such as waste plastics, oil sludge, tires, and sewage sludge. Through efficient combustion and heating methods, the large solid heat carrier furnace achieves high-efficiency pyrolysis carbon combustion, stable bed temperature and bed pressure, and has a function for regulating the flow rate of circulating solid particles.

The application discloses a kind of photothermal synergic catalysis co-pyrolysis system and method of marine organic solid waste, method includes the following steps: waste fishing net, plastic garbage and seaweed are crushed and mixed uniformly according to mass ratio (2-4):(3-5):(1-3);Mixed material and multifunctional composite photocatalyst prepared by seaweed are sent into moving bed reactor according to mass ratio (10-20):1, under the condition of concentrated solar energy leading, electric heating auxiliary, continuous co-pyrolysis is carried out;Pyrolysis product is separated by three-stage condensation to obtain heavy oil, light oil, water and gas.The method realizes the green cycle of "waste treatment", the catalyst cost is low, the degree of system intelligence is high, and provides an efficient, environmentally friendly, economically feasible innovative path for the resource utilization of marine organic solid waste.

The application discloses a kind of rural organic solid waste low-temperature pyrolysis processing systems, including low-temperature pyrolysis furnace, crushing assembly, crushing assembly, grinding assembly, preheating assembly and control system.The low-temperature pyrolysis furnace is fixedly provided with exhaust pipe for discharging exhaust gas, the exhaust pipe is installed with purification assembly away from the one end of low-temperature pyrolysis furnace;The crushing assembly includes crushing box, two crushing rollers are rotationally arranged in the crushing box, and the crushing knives are arranged on the two crushing rollers in length direction;The crushing assembly includes crushing tube, the shaft is rotationally arranged in the crushing tube, and the crushing knives are arranged on the outer wall of the shaft middle section and located at the outlet below the crushing box and have organic solid waste crushing.Integrated design is adopted, under the premise of meeting waste gas treatment and waste heat utilization, the overall production cost is low, which can be conveniently used in rural areas, without transferring organic solid waste, energy saving and environmental protection and reducing processing cost.

The invention discloses a binary pseudocapacitance composite material for promoting anaerobic digestion of kitchen waste and a preparation method and application thereof, and belongs to the technical field of organic solid waste recycling and renewable energy sources. The wood chip biochar-polydopamine-Fe3O4 composite material with a core-shell structure is constructed by taking wood chips as raw materials, preparing biochar through low-temperature pyrolysis, forming an interface modification layer through polydopamine coating, loading Fe < 3 + > and carrying out secondary pyrolysis to generate Fe3O4 nanoparticles (40-110nm). The material can be recovered through a magnetic field (the recovery rate is greater than or equal to 90%), when the dosage is 0.8-1.2 g / L, the peak value of volatile fatty acid in an anaerobic digestion system is obviously reduced to be less than or equal to 400 mg / L, the methane accumulation yield is improved to be greater than or equal to 45%, the electron transfer efficiency of acid-producing bacteria and methanogens is synchronously optimized, and the system operation is stabilized.

The invention discloses a continuous feeding type ammonia reducing-nitrogen preserving-maturing promoting composting reactor and method, and belongs to the technical field of organic solid waste resourceful treatment and environmental engineering. The device adopts a mode of'four-zone sectional treatment + internal odor circulation + water vapor / ammonia gas management + adaptive aeration control 'to realize continuous feeding, zone synergistic fermentation and efficient nitrogen interception. The reactor integrates an ammonia gas and odor reduction unit in which electrodes assist microorganisms, a circulating pump drives gas to flow back, and a selective membrane is combined with activated carbon, and an aeration regulation and control system based on oxygen concentration feedback. And when a fermentation period is completed in about 20 days, ammonia emission and nitrogen loss are effectively reduced, decomposition is promoted, the quality of a compost product is improved, and the engineering value capable of being amplified and applied is achieved.

The application provides a method for enhancing anaerobic digestion of organic solid waste containing new pollutant antibiotics by circulating oxygen disturbance, and belongs to the technical field of solid waste resource treatment. The method introduces circulating and increasing micro-nano bubble oxygen water stress during the stable operation period of anaerobic digestion, uses the dynamic change of physical oxidation pressure to induce the adversity defense mechanism of microorganisms, and promotes the improvement of metabolic activity and optimization of community structure of functional flora in situ. By accurately regulating the key process parameters such as oxygen disturbance cycle, gradient dosing ratio and the like, the application not only avoids the excessive inhibition of oxygen on methanogens, but also significantly enhances the adaptability of the system to the environmental stress of new pollutants. The application has the advantages of no need for external agents, high physical mass transfer efficiency, significant yield increase and harmless effect, and is suitable for in-situ strengthening and deep performance improvement of anaerobic digestion systems of municipal sludge, livestock and poultry manure and kitchen garbage and the like.