83 results about "Methane yield" patented technology

The invention belongs to the technical field of biomass anaerobic treatment, and particularly discloses a method for preparing methane through biomass anaerobic digestion based on oxygen nano bubble water. Biomass, activated sludge, oxygen nano bubble water and water are mixed, anaerobic digestion treatment is carried out, and methane is obtained. By introducing high-stability oxygen nano bubble water, a suitable micro-aerobic environment is provided for facultative anaerobic bacteria, so that the metabolic activity of the facultative anaerobic bacteria is activated, the decomposition and conversion of complex organic matters are accelerated, and the efficiency of a hydrolytic acidification stage is remarkably improved. Compared with a traditional chemical or physical pretreatment mode, the method has the advantages that interference on anaerobic flora is avoided, the degradability of a substrate is effectively enhanced, and more sufficient organic acid is provided for a subsequent methane production stage, so that the yield of methane is increased.

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 a magnetic biochar coupled dynamic membrane synergistic pollution reduction and flora regulation method, which comprises the following steps: adding magnetic biochar into an anaerobic dynamic membrane bioreactor for anaerobic digestion reaction, and adding 1.2-1.5 g of magnetic biochar into each liter of sludge mixed liquid in the anaerobic dynamic membrane bioreactor. The magnetic biochar is composed of a honeycomb-shaped carbon material obtained by pyrolyzing carbon through sodium citrate and Fe3O4 loaded on the surface of the honeycomb-shaped carbon material through a chemical coprecipitation method. According to the method, functional microorganisms such as methane filamentous bacteria and methane rod bacteria can be selectively enriched, the methane yield is increased by 30%-35%, membrane pollution is effectively relieved by improving the sludge floc structure, the service life of the membrane is prolonged, and technical support is provided for low-cost and low-energy-consumption operation of the anaerobic membrane bioreactor.

A method for predicting CH4 production and CO2 sequestration in a CO2-ECBM process belongs to the field of natural hydrogen resource exploration, and is technically characterized by comprising the following steps: constructing a multiphase and multicomponent coupling model for describing the migration process of water, methane and carbon dioxide of a stratum coal bed gas reservoir; the method comprises the following steps: constructing a geologic model of a stratum coalbed methane reservoir, performing grid division on the geologic model to obtain a plurality of grid units reflecting different spatial distribution positions of the coalbed methane reservoir, and setting initial conditions and boundary conditions of the geologic model; and according to the multiphase and multicomponent coupling model, solving spatio-temporal evolution characteristics of pressure and concentration of water, methane and carbon dioxide of each grid unit of the geologic model to obtain distribution in time and space. According to the method, the influence of the underground water in the coal bed gas on the migration behavior of methane and carbon dioxide is fully considered, the limitation of prediction result deviation caused by neglecting the effect of the underground water in the existing research is overcome, and the accurate prediction of the methane yield and the carbon sequestration amount in the CO2-ECBM process is realized.

The invention discloses a regulation and control system for anaerobic digestion and a magnetic charcoal preparation method thereof, which effectively achieve the purposes of increasing methane yield and reducing system energy consumption, and comprises: an anaerobic fermentation unit, which is provided with an aeration device and a heat exchanger; the micro-nano bubble generation unit is connected with the aeration device through a pipeline and comprises a switchable gas source for providing at least one of H2, N2 and CO2; the bubble generation assembly adopts a composite structure of a microporous membrane and a Venturi tube; the magnetic charcoal adding unit is connected with the anaerobic fermentation unit through a sealing pipeline and comprises a storage tank and a screw feeder; the intelligent control unit comprises a sensor array and an executing mechanism, the structure is novel, the conception is ingenious, operation is easy and convenient, the effects of accurately controlling the particle size of bubbles and maintaining the interface potential are effectively achieved, and the effect of intelligently switching gas components and the charcoal adding amount is achieved.

The invention belongs to the technical field of CO2 catalytic conversion, and discloses an in-situ reduction efficient CO2 methanation catalyst as well as a preparation method and application thereof. The efficient CO2 methanation catalyst NiA (CO3) xRe is formed by in-situ reduction of Ni and A coupled carbonate NiA (CO3) x, wherein A is selected from one of Mg, Ce and Al. NiA (CO3) xRe is prepared by a coprecipitation method. According to the present invention, the reaction equilibrium conversion is achieved at 300 DEG C in the reaction atmosphere with the CO2: H2: N2 volume ratio of 1: 4: 5 and the air speed of 150000 mL.gcat <-1 >. H <-1 >, the methane selectivity reaches 100%, the methane yield reaches 677.8 mmol.gcat <-1 >. H <-1 >, and the methane selectivity is still not reduced after the operation is performed for 100 h under the condition; compared with the prior art, the prepared catalyst greatly improves the high efficiency and stability of methanation catalytic reaction, the preparation process is simple, large-scale production is easy to achieve, the catalyst is matched with the temperature of coal-fired flue gas, energy does not need to be input again, efficient conversion can be completed, carbon emission is effectively reduced, and high-value products are obtained for use; and a favorable way is provided for realizing a carbon neutralization target.

The invention discloses a CSTR-based three-dimensional electrode MEC-fluidized bed reactor for anaerobic fermentation of cow dung and application, and belongs to the technical field of microbial electrochemistry. The reactor comprises a reactor main body, a feed port, a discharge port, a gas outlet and a stirring device, an anode and a cathode are arranged in the reactor main body, a conductive three-dimensional particle electrode filler is filled between the anode and the cathode to form a three-dimensional electrode system, and the anode and the cathode are connected with an external power supply. The three-dimensional electrode system is constructed, so that the reaction specific surface area and the electron transfer efficiency are greatly increased, the stimulation effect of a low-voltage electric field is amplified to the whole reaction space, and the technical bottlenecks of low mass transfer efficiency, low methane yield, easiness in system instability and the like in the traditional cow dung anaerobic digestion are solved. Compared with the traditional anaerobic digestion and two-dimensional microbial electrolysis cell, the two-dimensional microbial electrolysis cell disclosed by the invention can obviously improve the methane yield and the system operation stability, and has an excellent engineering application prospect.

This invention discloses an anaerobic bio-fermentation process for the targeted degradation of municipal sewage sludge, belonging to the field of sludge treatment technology. The process includes: pretreatment and targeted activation of components; staged hydrolysis and acidification for targeted production of short-chain fatty acids; methanogenic fermentation mediated by conductive materials coupled with a microbial electrolysis cell for assistance; multi-parameter dynamic control based on online monitoring and intelligent algorithms; magnetic separation, recovery, and recycling of magnetic conductive materials; in-situ biogas purification and product gradient reflux; solid-liquid separation and residue resource utilization. This invention achieves kinetic matching and metabolic enhancement of hydrolysis and acidification and methanogenesis through the deep linkage of four modules: targeted hydrolysis and acidification, enhanced direct interspecies electron transfer via a microbial electrolysis cell, magnetic material circulation, and intelligent control. Compared with existing technologies, the methane yield is increased by more than 40%, propionic acid accumulation is below 50 mg / L, the fermentation cycle is shortened to 8-10 days, and system energy consumption is reduced by 20%.

The invention discloses a preparation method and application of an electrode of bioelectrochemical equipment. The method comprises the following steps: S1, pretreatment; s2, preparing a polyvinyl alcohol solution; s3, preparing electrode slurry; s4, coating is carried out; and S5, drying. The electrode is used for treating chlorophenol wastewater. The electrode provided by the invention is prepared by modifying zero-valent iron, is arranged in an anode region of a bioelectrochemical reactor, and can effectively regulate and control oxidation-reduction potential, strengthen electron transfer between iron reducing bacteria and acetogenic bacteria at an anode and enrich acetogenic flora by loading trace zero-valent iron, so that the yield of acetic acid in an acidogenic phase is increased; the synchronous pollutant removal and methane yield increase are realized, and the economic benefit is improved.

The invention belongs to the technical field of organic waste treatment, and particularly relates to a multi-parameter regulation and control high-cellulose organic waste anaerobic digestion treatment method. According to the method provided by the invention, high-cellulose wastes such as traditional Chinese medicine residues, olive residues and vinasse are subjected to alkali liquor, hydrothermal or biogas slurry pretreatment, the contents of reducing sugar, volatile fatty acid (mainly acetic acid) and ammonia nitrogen are synchronously monitored, and the pretreatment conditions are dynamically adjusted according to preset thresholds (the reducing sugar is less than or equal to 50mg / g, the acetic acid is obviously higher than propionic acid, and the ammonia nitrogen is less than or equal to 7mg / g). The method disclosed by the invention realizes cooperative regulation and control of hydrolysis promotion and digestion stability, effectively avoids acidification and ammonia inhibition, improves the methane yield and the system operation stability, and is suitable for efficient anaerobic digestion treatment of various high-cellulose organic wastes.

The invention belongs to the technical field of yield increase of methane gas by anaerobic degradation of lignite, and provides a method for producing methane gas by anaerobic degradation of lignite by mixing exogenous bacteria and straws. According to the method, temple river coal seam water enrichment culture flora is used as exogenous bacteria, Inner Mongolia Shengli lignite is used as a gas production substrate, the same culture medium and bacterial liquid are added, and the influence of coal, straw and addition of the coal and the straw on the methane gas production rate is analyzed. After two months of monitoring, the net methane yield of a straw and coal (1: 1) group is 84.28 mL, and the net methane yield is 28.09 mL / g; the net methane yield of a coal group is 33.15 mL, and the net methane yield is 11.05 mL / g; the gas production rate of the straw and the coal as the substrate is more than two times that of the single coal as the substrate. According to data calculation of bottled experiments, the daily gas production rate of the exogenous bacteria for degrading the coal and the straws is 0.47 m < 3 > / t / d. The exogenous bacteria and the straws jointly act on the lignite, so that the gas volume and the gas production rate are obviously increased. And the generated methane can also be used as a green energy source in other fields.

The invention provides a method for preparing methane through pyrolysis of medical waste and application of the method, and relates to the technical field of medical waste treatment and energy recovery, and the method comprises the following steps: pyrolyzing the medical waste to obtain pyrolysis gas, purifying the pyrolysis gas, then carrying out steam reforming reaction to obtain reacted gas, separating and purifying the reacted gas to obtain the methane. Methane is obtained; during pyrolysis, the temperature is increased to 190 DEG C to 210 DEG C and kept for 8 min to 12 min, then the temperature is increased to 390 DEG C to 410 DEG C and kept for 13 min to 17 min, and then the temperature is increased to 540 DEG C to 560 DEG C and kept for 30 min to 40 min; the steam reforming reaction catalyst is a lanthanum modified nickel-based catalyst. According to the method, the technical effects of destroying pathogens in the medical wastes, cracking macromolecular organic matters, improving the methane yield and purity and reducing the treatment cost are achieved, and harmless, resourceful and efficient treatment of the medical wastes is realized.

The invention discloses a method for promoting anaerobic digestion of sludge to produce methane through combination of straw bacterial saccharification products and sludge pretreatment, and belongs to the field of preparation of methane from waste biomass by microorganisms. The invention aims to solve the problems of low hydrolysis rate and low methane yield in the conventional process for producing methane by anaerobic digestion of sludge. The method comprises the following steps: 1, taking crushed corn straws as a saccharification substrate, and inoculating R.thermocell M3 to prepare a saccharification product; 2, adjusting the pH value of the residual sludge in the secondary sedimentation tank to 9; and 3, carrying out anaerobic digestion on the microbial saccharification product and sludge to produce methane. In the anaerobic digestion system, the methane production process of the sludge is enhanced by pretreating the sludge and adding the microbial saccharification product containing the high-carbon compound, so that the methane yield is increased.

The invention relates to a preparation method and application of a compound flocculant for municipal sewage treatment, and aims to solve the problems of high operation cost and the like caused by insufficient energy self-supply capability and dependence on coagulant addition in chemical strengthening primary treatment in the existing sewage treatment system. The preparation method comprises: 1, preparing a ferric chloride solution; 2, adding chitosan quaternary ammonium salt into an acidic buffer solvent to obtain a chitosan quaternary ammonium salt solution; and 3, adding the ferric chloride solution into the chitosan quaternary ammonium salt solution, stirring, and standing to obtain a stable compound flocculant solution. The prepared compound flocculating agent can efficiently intercept organic matters and phosphorus in sewage, the dosage of chemicals is remarkably reduced, the operation cost is reduced, and meanwhile, the problem of acidic sludge caused by the use of aluminum salt is avoided; the iron-reinforced sludge obtained by the invention shows higher degradability and methane gas production efficiency in the anaerobic digestion process, and the methane yield is 98.92 mL / gVSS.

The invention discloses a spiral symmetrical flow anaerobic membrane bio-membrane reactor system, which comprises a spiral symmetrical flow anaerobic reactor and a membrane aeration bio-membrane reactor, the spiral symmetrical flow anaerobic reactor is sequentially provided with a water inlet pump, a water inlet pipe, a first anaerobic reaction zone, a second anaerobic reaction zone, a third anaerobic reaction zone, a main gas outlet pipe and a water outlet pipe from bottom to top; the membrane aeration bio-membrane reactor is sequentially provided with a water inlet pump, a water inlet pipe, an MABR third reaction zone, an MABR second reaction zone, an MABR first reaction zone, a membrane assembly, an air inlet assembly and a water outlet pipe from bottom to top. According to the invention, gas-liquid interaction among multiple reaction intervals is realized through the gas pump and the liquid pump, precise regulation and control of gas partial pressure and reflux flow are realized, and the system has the characteristics of enhancing mass transfer driving force, improving methane yield, optimizing denitrification efficiency and the like, so that the system can adopt a green and low-carbon water treatment route, and meanwhile, efficient and intensive reactor combination is realized.

The application discloses an anaerobic bacteria agent and method for improving the anaerobic methane production rate of medium-temperature and medium-high-temperature cellulose. The compound anaerobic microbial liquid bacteria agent is prepared from Ruminiclostridium cellobioparum subsp. termitidis, Thermoanaerobacter ethanolicus, Clostridium sartagoforme and Methanosarcina barkeri. The bacteria agent is composed of four strains of synergistic bacteria, and the culture process is simple and easy to operate. When the bacteria agent is applied to medium-temperature and medium-high-temperature anaerobic digestion, the cellulose conversion methane rate can be significantly improved (more than 40%) and the methane yield can be significantly improved (more than 120%).

Provided is a methane production reactor that exhibits excellent methane yield. A methane production reactor according to an embodiment of the present invention has gas flow paths to which a raw material gas containing ammonia and carbon dioxide is supplied. The methane production reactor comprises: a honeycomb-shaped base material including partition walls that define a plurality of cells, at least some of the plurality of cells including the gas flow paths; and catalyst-containing layers provided on the surfaces of the partition walls so as to face the gas flow paths, the catalyst-containing layers being capable of promoting a reaction for generating methane from the raw material gas.

There is provided a method, assemblies and a gas flow regulation system using a methane-rich gaseous fluid and liquefied carbon dioxide from a carbon dioxide-comprising input gas stream. In this process, the input gas stream is first directed through a gas separation unit, which separates the gas into a methane-rich fluid and a stream enriched in carbon dioxide and / or hydrogen. The carbon dioxide and / or hydrogen-enriched stream is then processed in a CO2 liquefaction assembly, and at least a portion of it is subsequently combined with hydrogen—preferably in a superstoichiometric H2:CO2 ratio. This mixture feeds into a bio-methanation reactor, where methane is synthesized through the action of methanogenic microorganisms. The resulting methane-rich gaseous fluid from the reactor is recycled back to the gas separation unit for mixing with the initial input gas stream, creating a closed-loop process that eliminates the emission of CO2, CH4, or H2 into the environment.

The invention discloses a silage data processing device, method and computer program for predicting rumen digestion gas production. Based on silage properties (13 input variables) and rumen gas production and digestion results (14 output variables at different moments), a model for predicting the gas production and digestion results of the silage in the rumen is constructed by using five tree models such as CatBoost and the like. R2 of the total gas production rate prediction model and R2 of the methane yield prediction model can be higher than 0.83, and the highest R2 can reach 0.96; the R2 of the digestibility model is more than 0.79, except for the IVDMD24h model (0.58), the data processing device and method can be applied to precise feeding and green breeding of ruminants.

The application discloses an anaerobic treatment system and process suitable for wastewater containing high organic suspended matter, which comprises a water inlet assembly, a reactor, an internal circulation assembly, a water collecting and discharging assembly and an exhaust assembly; a group of metal membrane tubes are arranged in the reactor, and hydrolytic acid-producing bacteria are loaded in the metal membrane tubes; methanogenic bacteria are filled in the space outside the metal membrane tubes in the reactor; the reactor is connected with the water inlet assembly through the bottom of the metal membrane tubes; the internal circulation assembly is connected with the upper and lower parts of the reactor respectively; the water collecting and discharging assembly is arranged on the top of the reactor, and the reaction water is discharged from the reactor through a discharging pipeline; and the exhaust assembly is connected with the top of the reactor. The application can realize the effect that the acid-producing phase and the methanogenic phase are separated from each other and cooperate with each other, the effluent water is filtered through a membrane, and stable three-phase separation is realized. The application has the advantages of high anaerobic reaction efficiency, stable effluent water quality and high methane yield, and is especially suitable for anaerobic treatment of wastewater containing high organic suspended matter.

The invention discloses a method and a device for producing low-carbon olefin by catalytic cracking of heavy hydrocarbon, which can produce high-yield low-carbon olefin and carbon raw materials at the same time, improve the yield and selectivity of ethylene, propylene and butylene, reduce the yield of methane, reduce the alcohol content in the product to the greatest extent, and realize conversion of low-cost alcohol into low-carbon olefin. The method can realize high-selectivity conversion of olefin and alcohol into low-carbon olefin, solves the problem of overhigh yield of methanol cracking methane, maximally obtains ethylene and propylene, improves the selectivity of methane and coke, and realizes high-efficiency utilization of alcohol and fossil resources.

This invention discloses a catalyst for the production of ethylene and propylene, its preparation method, and its applications. The catalyst comprises the following components: I) 1%–10% of chemical formula A x B y D z A compound of O4; in the chemical formula, the oxidation states of elements A, B, and D are m, n, and p, respectively, satisfying x·m + y·n + z·p = 8, where m, n, and p are integers not greater than 3; the A x B y D z O4 has a spinel structure; II) 0.5%–10% is selected from at least one oxide of rare earth elements, P, Mo, and W; III) 20.0%–55.0% is selected from at least one zeolite of ZSM-5 and ZSM-11; IV) 10%–30% is a binder; V) 25.0%–60.0% is clay. This catalyst is used in the catalytic cracking of petroleum hydrocarbons to produce ethylene and propylene, and features good catalyst stability, low methane yield, and high ethylene and propylene yields.

The invention belongs to the technical field of biological energy sources, and particularly relates to a method for preparing methane through biological fermentation of residual coal. Comprising the following steps: residual coal pretreatment, complex flora configuration, fermentation system construction, fermentation process control, and methane collection and purification. The invention provides a novel method for realizing high-efficiency conversion of organic carbon in residual coal and improvement of methane yield through key technical means such as multi-stage pretreatment, composite flora synergistic fermentation, high-efficiency gas collection and recovery and the like on the basis of in-depth study on physicochemical characteristics of the residual coal. The method has the advantages of high recycling degree, small environmental pollution, high energy recovery rate and the like, and has good industrial application prospects and technical innovation values.

This invention provides a multi-stage membrane separation process for the comprehensive utilization of helium-containing natural gas liquefaction tail gas. It nests helium-preferred permeation membrane and methane-preferred permeation membrane separation units in a tiered manner. First, the liquefied tail gas is passed through two stages of helium-preferred permeation membrane separation units to produce crude helium. Then, the residual gas is passed through a methane-preferred permeation membrane separation unit, separating out methane-rich gas which is sent to the natural gas liquefaction plant to increase liquefied natural gas production. Finally, the residual gas from the methane-preferred permeation membrane is passed through a second stage of helium-preferred permeation membrane, recovering helium while reducing the separation scale and improving separation efficiency. This achieves high-efficiency and high-yield comprehensive utilization of helium-containing natural gas liquefaction tail gas. Using this multi-stage membrane separation process, for natural gas liquefaction tail gas with a helium concentration of 1.06 vol%, the helium yield reaches 99.4%, with a purity exceeding 80.0 vol%, and the methane yield exceeds 88.7%. The unit power consumption for separating each standard cubic meter of liquefied tail gas does not exceed 0.41 kWh.

The invention discloses a method and a device for preparing low-carbon olefin, which can realize high-selectivity conversion of olefin and methanol into low-carbon olefin, solve the problem of overhigh yield of methanol cracking methane, furthest obtain ethylene and propylene, improve the selectivity of methane and coke and realize efficient utilization of methanol and fossil resources.

The invention discloses a strain combination, a methane fermentation system and a preparation method, and belongs to the technical field of microorganisms. In the methane fermentation system provided by the invention, lignocellulose in crop straws is firstly and preliminarily hydrolyzed into soluble saccharides by natural hydrolytic flora in an inoculum, and then the soluble saccharides are fermented by lactobacillus plantarum to generate intermediate products such as lactic acid, acetic acid, ethanol, hydrogen, carbon dioxide and the like; further, intermediate products such as lactic acid and ethanol are converted into methane-producing precursors such as hydrogen and acetic acid through natural microbial flora in the inoculum; subsequently, in the methane production stage, methanosarcina utilizes hydrogen and carbon dioxide to produce methane in a hydrogen nutrition mode, utilizes acetic acid to produce methane in an acetic acid nutrition mode and / or utilizes methyl substances to produce methane in a methyl nutrition mode, accumulation of intermediate products is avoided, and the conversion efficiency of a substrate and the methane yield are improved.

The application relates to a catalytic cracking reaction-regeneration system and method, which comprises a reactor, an oil agent separation device and a regeneration device. When the catalytic cracking reaction-regeneration system and method are used for light petroleum hydrocarbon catalytic cracking reaction, not only is the catalytic reaction selective, the ethylene and propylene yield is high, the methane yield is low, but also the problem of reaction heat balance is solved without damaging the properties of the catalyst.

The application discloses a biomass synthesis gas anaerobic digestion methanogenesis system, which comprises an inlet flow controller, a high-temperature reaction device, a medium-temperature reaction device and a fermentation liquid transmission device. The inlet flow controller is connected with the bottom of the high-temperature reaction device through a pipeline, so that the metered biomass synthesis gas can be transported to the high-temperature reaction device. The top of the high-temperature reaction device is connected with the bottom of the medium-temperature reaction device through a pipeline, so that the gas fermented at a temperature of 45-65 DEG C can be transported to the medium-temperature reaction device. The side of the high-temperature reaction device, the fermentation liquid transmission device and the side of the medium-temperature reaction device are sequentially connected through pipelines, so that the organic acid fermented can be transported to the medium-temperature reaction device. The medium-temperature reaction device is used for secondary fermentation of the gas transported by the high-temperature reaction device at 25-40 DEG C and decomposition of the organic acid. The system can ferment the biomass synthesis gas to obtain gas with high methane yield and raw material utilization rate. The application further discloses a biomass synthesis gas anaerobic digestion methanogenesis method.

This invention discloses a piezoelectric biohybrid, belonging to the field of wastewater treatment and resource utilization technology. The piezoelectric biohybrid is composed of barium titanate particles and anaerobic sludge, with the barium titanate particles exhibiting piezoelectricity. This invention innovatively utilizes the abundant mechanical stress generated by fluid flow, mechanical stirring, and microbial gas production in the anaerobic fermentation system. The piezoelectric biohybrid provided by this invention converts the mechanical energy of this stress into a built-in electric field within the anaerobic fermentation system, providing a new method for driving interspecies electron transfer. This effectively enhances interspecies electron transfer between acid-producing bacteria and methanogenic bacteria, increasing methane yield under anaerobic fermentation. Furthermore, the piezoelectric biohybrid provided by this invention has the advantages of simple structure, reasonable design, and ease of manufacture.

The invention discloses a municipal sewage carbon resource efficient trapping and resource utilization device and method, and belongs to the technical field of sewage treatment and resource utilization. Organic carbon in sewage is efficiently intercepted and enriched through an ultrafiltration membrane system, and the membrane separation process is optimized in cooperation with ultrasonic and sludge-based biochar; the anti-pollution capacity and the carbon source recovery efficiency of the membrane are obviously improved; concentrated liquid obtained through enrichment enters an anaerobic digestion system, biodegradable organic matter is converted into methane, and energy utilization is achieved; effluent of the ultrafiltration membrane and anaerobic digestion liquid are subjected to nitrogen and phosphorus removal treatment so as to reach the standard and be discharged; anaerobic digestion biogas residues enter a hydrothermal carbonization system and are converted into sludge-based biochar, the biochar flows back to an ultrafiltration system, membrane pollution is further reduced, and the carbon capture capacity is enhanced; and the hydrothermal liquid flows back to the anaerobic digestion system and is used for optimizing the utilization efficiency of the substrate and improving the methane yield. Through cooperative coupling of all the treatment units, efficient capture, energy conversion and cyclic utilization of carbon resources in municipal sewage are achieved.