1101 results about "Biogas" 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 relates to the technical field of fuel gas mixing, and discloses a biological natural gas mixing control method and system.The method comprises the steps that a natural gas branch, a synthesis gas branch and a mixed gas outlet are each provided with a multi-mode sensor unit; carrying out data fusion on the detection data and the detection data of an on-line chromatographic instrument and a mixed gas rapid calorific value instrument, and estimating the low calorific value, the bloom index and the gas component percentage of the mixed gas in real time based on a constraint model and Kalman filtering; establishing a prediction controller, setting input to predict gas characteristics required by a future gas turbine, and outputting a synthesis gas valve opening degree and a natural gas valve fine tuning signal; calculating an allowable mixing proportion upper limit to form a dynamic mixing window, and adjusting the mixing proportion of the natural gas and the synthesis gas based on the dynamic mixing window when a hard boundary condition is met; and when the instability state occurs, the safety interlocking is triggered. According to the invention, rapid detection is realized, active adjustment of rapid working condition fluctuation is realized, and safety interlocking is arranged, so that the overall operation safety is improved.

The invention discloses modified biogas residue-based hydrothermal carbon, a preparation method thereof and a dry digestion method for kitchen waste, and belongs to the technical field of waste organic matter recycling. The preparation method comprises the following steps: soaking biogas residues in a phosphoric acid solution to obtain pretreated biogas residues; mixing the pretreated biogas residues, transition metal salt, biochar loaded with vitamin B12 and water with the mass being 8-15 times that of the pretreated biogas residues, and performing hydrothermal reaction for 1-4 hours under the conditions that the temperature is 180-250 DEG C and the pressure is 1.5-4 MPa to obtain a hydrothermal product; and activating the hydrothermal product for 1-2 hours under the protective atmosphere of 300-400 DEG C to obtain the modified biogas residue-based hydrothermal carbon. The surface Fe-Cu composite oxide sequentially catalyzes and oxidizes H2S into elemental sulfur and sulfate ions, the vitamin B12-loaded biochar can promote MA directional proliferation, the sulfate ions can competitively inhibit SRB substrate uptake, the quantity ratio of MA to SRB is increased, and the methane production efficiency is effectively improved.

The application discloses a method for efficient denitrification and decarburization of kitchen waste and sludge co-fermentation anaerobic digestion effluent, which removes part of COD and ammonia nitrogen in the influent sludge by using a first SNAD, and maintains a certain amount of free ammonia of a certain concentration due to the high concentration of ammonia nitrogen and the high pH of the influent, so as to maintain the inhibition effect on nitrifying bacteria and ensure the conversion of part of the ammonia nitrogen into nitrite nitrogen, and the high activity of anaerobic ammonia oxidation bacteria is ensured in the first SNAD by limiting the aeration amount, so that the ammonia nitrogen and nitrite can be further removed; the effluent enters a nitrification tank, and the ammonia nitrogen is nitrified into nitrate nitrogen under the condition of nitrifying bacteria and sufficient aeration amount, and then enters a denitrification tank, and the denitrification process is carried out under the condition of heterotrophic denitrifying bacteria and sufficient carbon source, so that most of the nitrate nitrogen in the system is converted into nitrogen gas and removed, finally, the clear liquid is discharged after being filtered by an MBR membrane in a membrane tank, so as to achieve the purpose of efficient denitrification and decarburization of kitchen waste anaerobic digestion effluent.

The utility model relates to the technical field of organic fertilizer fertilization, and particularly discloses an organic fertilizer fertilization system and a fertilization method, the organic fertilizer fertilization system comprises a differential pressure centrifugal filtering device, the differential pressure centrifugal filtering device comprises a device body, a centrifugal rotating disc is rotatably arranged in the device body, and a plurality of small filtering holes are formed in the middle of the side wall of the centrifugal rotating disc; a refined filtration liquid storage chamber and a slag liquid storage chamber are arranged in the device body; the bottom section cutting surfaces of the refined filtration liquid storage chamber and the slag liquid storage chamber are arranged in a manner that the middle parts are convex; the centrifugal turntable sequentially penetrates through the middle parts of the refined filtration liquid storage chamber and the slag liquid storage chamber; and a feeding pipe is arranged above the centrifugal turntable. The device has the beneficial effects of low energy consumption, high filtering efficiency, capability of meeting the requirement of applying biogas slurry to a drip irrigation system after treatment and the like.

A method to produce a halogen-depleted gas is described. The method providing a gas derived from and / or including a source of biogas, mixing said gas with a source of hydrogen to produce a processed gas mixture including an acid, and separating said acid from said processed gas mixture. Sulfur, oxygen, carbon dioxide removal processes are integrated into the method. Production of secondary products, and removal thereof, are included. Pre and post processing may be integrated, and production of products is described.

The invention discloses a biogas energy comprehensive utilization efficiency optimization system and method based on the Internet of Things, and belongs to the technical field of industrial automation control and energy management, the system realizes intelligent management and optimal scheduling of the whole life cycle of biogas energy through a distributed multi-level calculation control architecture, and the core is a multi-agent cooperative control platform. Comprising a fermentation agent, a purification agent, a storage agent and a utilization agent, all the agents can independently execute local control tasks and can cooperatively work to achieve global optimization, an Internet of Things sensor is deployed in the system to collect operation state data, real-time data transmission is achieved through the industrial Ethernet, and the intelligent control system is established. The marginal intelligent control node carries out local preprocessing and real-time decision making, a self-adaptive control algorithm library is innovatively integrated, the optimal control algorithm is dynamically selected according to different process links, the biogas yield and quality are remarkably improved, and practical application shows that the biogas yield is improved by 15%-25%, and energy consumption is reduced by 10%-18%.

The invention discloses a sludge resource conversion and utilization device, and relates to the technical field of sludge treatment.The sludge resource conversion and utilization device comprises a tank body, a rotating mechanism for avoiding uneven sludge mixing is arranged in the tank body, and an air blowing mechanism for accelerating internal circulation of the tank body is arranged outside the tank body; a stirring mechanism for driving sludge to transversely move is arranged in the middle of the tank body, a floating mechanism for stirring scum on the top of the sludge is further arranged in the tank body, and a first rotating shaft and a second rotating shaft respectively drive upper and lower blades to synchronously and reversely rotate through a rotating mechanism; dynamic fine adjustment of the angle of the blade is realized by matching with a sliding rod and a driving lever structure, so that different sludge viscosities and concentration changes are adapted, the sludge mixing uniformity is enhanced, the problems of local dead zones and settled sand accumulation which are easily formed by traditional paddle stirring are avoided, full contact between microorganisms and a substrate is maintained, and the organic matter degradation rate and the biogas yield are improved.

The invention discloses a preparation method of modified salicornia biochar, and belongs to the technical field of environmental protection. The preparation method comprises the following steps: washing, drying and crushing salicornia europaea serving as a raw material, mixing the salicornia europaea with a nitrogen source modifier according to a certain mass ratio, adding water, uniformly stirring, dipping and drying; the nitrogen source modifier is one or more of urea, melamine or thiourea; then carrying out pyrolysis and carbonization, grinding, washing and drying the obtained carbon material, and finally preparing the modified salicornia biochar. The prepared modified salicornia biochar is used for adsorbing organic matters in sewage or wastewater, can effectively remove dissolved organic carbon (DOC, 86.34%), UV254 (89.33%) and chromaticity (CN, 94.74%) in an adsorption experiment of livestock and poultry biogas slurry, and shows excellent adsorption performance. The method follows the principle of treating waste with waste, the salicornia europaea waste is effectively treated, the obtained biochar has good application potential in the aspect of sewage and wastewater treatment, and high-value utilization of the waste is achieved.

The invention discloses an advanced organic wastewater treatment method and treatment device based on an advanced oxidation coupling coagulation denitrification method, and relates to the technical field of landfill leachate treatment, kitchen waste treatment, kitchen garbage treatment and the like, the treatment device comprises a coagulation tank unit, a flocculation tank unit, an air floatation and filter tank unit, an ozone catalysis unit and an activated carbon filter unit which are connected in sequence, the ozone generation unit and the tail gas decomposition unit are connected with the ozone catalysis unit. According to the invention, a traditional nanofiltration membrane advanced treatment process in the industry is replaced by an advanced treatment process of coagulation, flocculation, air floatation, filtration, ozone catalysis and activated carbon filtration, so that the generation of a concentrated solution is avoided; the defect that the biogas yield of an anaerobic digestion system is reduced due to the fact that the sulfate-containing concentrated solution flows back to the anaerobic digestion system of the landfill leachate treatment plant or the kitchen waste treatment plant is overcome, the load of a biogas desulfurization system of the landfill leachate treatment plant and the kitchen waste treatment plant is reduced, and the consumption cost of the concentrated solution is greatly reduced.

The invention discloses a field returning method based on straw covering and reinforced decomposition fertilizer preparation, and belongs to the technical field of agricultural waste recycling and soil improvement. By constructing a straw-biochar-decomposition agent composite functional system, integrating physical coverage and a biodegradation mechanism, agricultural wastes are used as raw materials to prepare a porous biochar carrier, and the porous biochar carrier has a high specific surface area and a multi-stage pore structure, so that the microbial inoculum loading capacity and the nutrient retention capacity are remarkably improved, and the microbial inoculum decomposition efficiency is improved. The composite decomposition microbial inoculum and concentrated biogas slurry are stabilized by combining an atomization loading technology, efficient decomposition and nutrient slow release of straws are realized, and meanwhile, the forming stability is enhanced by utilizing a degradable adhesive, so that the field applicability and durability of the material are improved.

The invention discloses a method for removing organic matters in an aluminum oxide solution produced by a Bayer process, which comprises the following steps: mixing evaporated discharged materials with biogas residues produced by biological gas production, stirring and adsorbing, and carrying out solid-liquid separation to obtain an adsorbed solution without the organic matters. The method disclosed by the invention can efficiently absorb organic matters in the sodium aluminate solution, effectively reduce negative effects of the organic matters on a production process, product quality and the like, greatly reduce foam of a decomposition tank, remarkably improve filtering and washing effects, reduce seed refinement, enable an aluminum oxide product to meet quality requirements, effectively improve the quality of the aluminum oxide product and reduce energy consumption; the production efficiency is improved, the production cost is reduced, the stability and sustainability of the production system process are enhanced, and the market competitiveness of products is improved.

The invention provides an STM32-based anaerobic fermentation biogas slurry near infrared transmission spectrum data on-line acquisition device. The device comprises a backwashing anti-blocking biogas slurry filtering system and an on-line liquid near infrared spectrum acquisition system, according to the system, a three-stage filtering mechanism is adopted, an STM32 microcontroller is taken as a core, a miniature optical fiber spectrometer and a halogen tungsten lamp light source are integrated to construct a compact transmission light path, and solid particles in biogas slurry are effectively removed by combining a backwashing anti-blocking T-shaped three-way filter, a double-buffer-bottle liquid level control mechanism and a PID liquid level control strategy; the cavitation phenomenon of a biogas slurry sampling pipeline is inhibited, the stability of sample conveying and the repeatability of spectrum collection are remarkably improved, and an efficient and portable online detection solution is provided for anaerobic fermentation process control; reliable hardware support is provided for application of a near infrared spectrum detection technology in a complex anaerobic fermentation environment.

The invention relates to the technical field of landfill leachate treatment, in particular to landfill leachate treatment equipment and method.The landfill leachate treatment equipment comprises an anaerobic tank and a water distribution pipe, and the water distribution pipe is arranged at the bottom in the anaerobic tank; the device further comprises a recovery device, an oxidation treatment device, a flocculation treatment device, a filtering device, a flow guide table, a flow guide inclined plate, two groups of circulating boxes and heat exchange pipes, the flow guide table and the flow guide inclined plate are respectively arranged at the upper part in the anaerobic tank, the two groups of circulating boxes are respectively mounted on two sides of the outer side wall of the anaerobic tank, and the plurality of groups of heat exchange pipes penetrate through the anaerobic tank and are communicated with the two groups of circulating boxes; the recovery device is communicated with the anaerobic tank and the two groups of circulating boxes, is used for recovering biogas generated in the anaerobic tank, and is used for heating the reaction temperature in the anaerobic tank by utilizing the biogas; ozone generated by the system can be conveniently combusted and heated, the medium-temperature anaerobic condition is achieved, the better anaerobic treatment effect is achieved, heating energy consumption is reduced, the degradation capacity of microorganisms to pollutants is enhanced, and the overall treatment effect is improved.

The utility model discloses an organic wastewater treatment device capable of recovering biogas, which relates to the technical field of wastewater treatment and comprises a bottom plate, a reservoir is mounted at the top of the bottom plate, a guide frame is fixed on the inner wall of the reservoir, a grating for filtering suspended solids in sewage is slidably connected to the inner wall of the guide frame, and a water outlet is formed in the bottom plate. A cleaning assembly used for dredging the grating is arranged in the water storage tank. The device has the beneficial effects that the filter holes in the grid are dredged through the push block, the grid is prevented from being blocked, the filtering effect is ensured, the pull rope is pulled to drive the collection box to slide on the outer side of the limiting rod, the scraper is driven to scrape and clean the surface of the grid, the floating cover floats up and down along with the biogas generation amount in the sealing tank, and the biogas is collected; the sealing performance between the floating cover and the inner wall of the sealing tank is ensured through the sealing gasket, biogas leakage is prevented, and the collected biogas is recycled through the connecting hose.

The device comprises a pretreatment unit and a PLC (Programmable Logic Controller), a denitrification reaction unit is arranged on one side of the pretreatment unit, and a deep denitrification unit is arranged on one side of the denitrification reaction unit. According to the utility model, the biogas slurry is flocculated through the flocculation tank, flocculate can be stood and settled through the settling tank, so that part of SS and COD can be removed, the biogas slurry sequentially passes through the three-phase separator, the carrier and the activated sludge to react, primary denitrification is realized, the denitrified biogas slurry can circulate in the reaction tank through the cooperation of the spray header and the transmission unit, and the denitrification effect is improved. The biogas slurry is fully reacted through the composite filler, so that deep denitrification is achieved, by adopting the activated sludge required by anaerobic ammonia oxidation, the carrier adsorbed with the denitrification biological strain and the composite filler, low-carbon-nitrogen-ratio wastewater can be denitrified under the condition that a carbon source does not need to be added, so that the project wastewater can be discharged up to the standard, and the wastewater can be recycled. And the operation cost of wastewater treatment can be saved.

The invention discloses a domestication method for efficiently degrading tobacco waste to produce hydrogen by using mixed flora, which comprises the following steps: carrying out anaerobic enrichment domestication culture by taking manure compost as a bacterial source and cellulose prepared from tobacco waste as a core component of a domestication culture medium; the domestication culture medium contains cellulose, ammonium bicarbonate and monopotassium phosphate, and the cellulose concentration gradient is gradually increased without adjusting the pH value; stopping culturing when the hydrogen content in the biogas is reduced by 10%, transferring the biogas to a fresh domestication culture medium for passage according to an inoculum size of 10-20%, and continuously domesticating for 20-40 rounds; inoculating the domesticated mixed flora culture solution into a cellulose liquid fermentation culture medium containing microcrystalline cellulose, ammonium bicarbonate, monopotassium phosphate and a nutrient solution according to the inoculum size of 10-20%; the initial pH of the fermentation liquor is adjusted to 6.5-7.5, high-purity nitrogen is introduced to create an anaerobic environment, and hydrogen is produced through fermentation under the conditions of 35 + / -1 DEG C and 120 r / min. According to the method, flora is easy to culture, hydrogen production is efficient and stable, tobacco waste resources can be utilized, flora stability is high, adaptability is high, and strict sterile conditions are not needed.

The utility model relates to the field of sewage treatment, in particular to a composite three-phase separator module for preventing sludge calcification and an anaerobic reactor thereof, which comprise an outer separation module, an inner separation module, a water outlet module and a backflow module, according to the composite three-phase separator module provided by the utility model, a remarkable technical breakthrough is realized through structural innovation and process optimization. The traditional IC reactor is limited by the arrangement mode of a three-phase separator, and the effective sludge level height is less than 50% of the total height of the reactor, so that the upper volume is idle. The composite three-phase separator module is integrated at the top of the reactor, and the height of a sludge layer is increased to 70%-80% of the total height of the reactor through the double-layer separation design of the outer separation module and the inner separation module, so that the microbial biomass and the treatment load are greatly improved. Meanwhile, methane is released through forced collision of a V-shaped separation plate of the outer separation module, so that the content of carbon dioxide in reflux liquid is reduced by more than 80%, and calcium carbonate crystallization conditions are effectively destroyed by combining forced mixing of inlet water with a circulating pump.

1. The name of the design product: biogas torch (premixed type). 2. The use of the design product: for processing biogas generated in the production process of sewage treatment plants, waste treatment plants, farms, chemical plants, etc.; biogas generated by anaerobic fermentation in the sewage treatment of pharmaceutical factories, distilleries, paper mills, kitchen waste treatment, landfill leachate, food factories, beverage factories, etc. 3. The design points of the design product: in shape. 4. The picture or photo that best indicates the design points: perspective view 1. 5. The top surface of the design product is not easily visible or invisible during use, and the bottom view is omitted. The bottom surface of the design product is not easily visible or invisible during use, and the top view is omitted.

The utility model discloses an under-forest planting biogas slurry, water, fertilizer and pesticide integrated irrigation device, and belongs to the technical field of agricultural equipment. A biogas slurry, water, fertilizer and pesticide integrated irrigation device for under-forest planting comprises a movable base, a pushing handle is fixedly connected to the right side wall of the movable base, a mixing box is fixedly connected to the top end of the movable base, a motor a is fixedly connected to the right side wall of the mixing box, and an output shaft of the motor a extends into the mixing box and is fixedly connected with a stirring shaft; the other end of the stirring shaft is rotationally connected to the inner wall of the mixing box, and a plurality of stirring rods are fixedly connected to the outer side of the stirring shaft. Through the arrangement of the storage folding structure, a motor b is started, so that a U-shaped plate can move towards the inner side direction of the storage box through two sliding blocks a, and then two inverted-L-shaped rotating pipes rotate and are stored in the storage box after being parallel under the action of a transmission gear and a toothed plate; therefore, the two inverted-L-shaped rotating pipes can be stored, and the external space occupied by the irrigation device when the irrigation device is not used is reduced.

The invention provides a loess-based hydrogen sulfide adsorbent, a preparation method thereof and application of the loess-based hydrogen sulfide adsorbent in removal of hydrogen sulfide in natural gas. Loess with a specific substance content is taken as a raw material, the material is prepared through pretreatment, modification activation and extrusion molding, and modification activation comprises alkali activation, graphene oxide crosslinking and copper and zinc loading. According to the invention, specific loess is combined with a targeted modification and activation process, so that the porosity and the specific surface area are effectively improved, and a new active phase is formed and endowed with adsorption and catalytic oxidation effects. The prepared adsorbent has the remarkable advantages of low cost, high sulfur capacity, long penetration time, excellent regeneration performance and the like. In a medium-low-temperature dry desulfurization scene, HS (the concentration is reduced to 0.1 ppm or below) in natural gas can be efficiently removed, and the device is particularly suitable for small and medium-sized natural gas purification devices in various process scenes such as a fixed bed and a moving bed, and can also be expanded to various fields such as coal chemical industry, petrochemical industry, biogas purification, environmental protection and the like.

The invention is suitable for the field of digital control, and discloses an energy recovery method and system for agricultural non-point source pollution treatment and a storage medium. The energy recovery method for agricultural non-point source pollution treatment comprises the steps that if to-be-treated pollutants are detected, component information of the to-be-treated pollutants is detected, the component information comprises the carbon nitrogen ratio, the water content and the organic matter content, and the to-be-treated pollutants comprise at least one of livestock and poultry breeding waste, crop straw, rural domestic sewage and agricultural production wastewater; according to the component information, a target energy conversion process is selected, and the target energy conversion process comprises at least one of an anaerobic fermentation biogas preparation process, a biomass pyrolysis fuel gas production process, a sewage anaerobic electricity production process and a straw solidification heat production process; according to the target energy conversion process, the recovered energy is output, collected and stored, and the energy comprises at least one of methane, combustible mixed gas, electric energy and heat energy. The conversion efficiency of energy recovery is improved.

The utility model discloses a sequential bacteria-algae coupling biogas slurry treatment device, and belongs to the technical field of biogas slurry treatment. The device comprises a biogas slurry tank, a pretreatment tank, an aerobic tank and a disinfection tank which are sequentially arranged, an interlayer I is arranged between the biogas slurry tank and the pretreatment tank, an interlayer II is arranged between the pretreatment tank and the aerobic tank, an interlayer III is arranged between the aerobic tank and the disinfection tank, and a water outlet I is formed in the bottom of the disinfection tank; the first water outlet is kept in an open state, biogas slurry in the biogas slurry tank permeates into the pretreatment tank through the first interlayer, permeates into the aerobic tank through the second interlayer, permeates into the disinfection tank through the third interlayer and flows out of the first water outlet, and the biogas slurry is used for culturing functional microalgae after being treated. The biogas slurry treatment device is ingenious in structural arrangement and simple in treatment process, and can effectively realize biogas slurry treatment by arranging the treatment ponds with different functions.

The present disclosure relates to the technical field of renewable energy utilization, and particularly relates to a waste heat and waste electricity and biomass coupled peak regulation and frequency modulation system, which comprises: an energy scheduling module, which is used for distributing photovoltaic waste electricity to a straw heat processing module when the photovoltaic waste electricity exists, and distributing photothermal waste heat to the straw heat processing module when the photothermal waste heat exists; the straw heat processing module, which is used for carbonizing a first quantity of straws to generate biochar by using photovoltaic, and carrying out biogas fermentation by using the biochar, the photothermal waste heat and a second quantity of straws to generate biogas, and transmitting the biogas to a gas separation module; and the gas separation module, which is used for generating power by using the biogas when the power grid system needs to be regulated and modulated. The present application can solve the problems of waste photovoltaic waste electricity and waste photothermal waste heat, and simultaneously consider the function of energy storage.

The invention discloses a greenhouse closed-loop energy-saving heat supply system based on biological waste fermentation, and relates to the crossing field of agricultural intelligent planting and waste resource utilization, the system comprises the following components: a fermentation unit, a biogas collection and utilization module, a waste heat and fertilizer recovery module and an intelligent management and control system; biogas is generated through fermentation of biological waste, heat generated by combustion of the biogas is used for supplying heat to a greenhouse and a living room, meanwhile, waste heat generated in the fermentation process is recycled for auxiliary heat supply, and the energy utilization efficiency is remarkably improved; according to the invention, residues after fermentation can be converted into a decomposed organic fertilizer for greenhouse crops to use, so that cyclic utilization of resources is realized, the use amount of chemical fertilizer is reduced, the production cost is reduced, and meanwhile, environmental protection is facilitated.

The utility model relates to the technical field of sludge-water separation, and discloses sludge-water separation equipment for a biogas digester, which comprises a support frame, three saddles arranged at the top end of the support frame, a separation tank fixedly connected to the top ends of the three saddles, an inlet pipe arranged at the top end of the separation tank, and a liquid outlet pipe arranged at the right end of the separation tank, the inner side of the separation tank is in threaded connection with a sludge top cover, the left end of the sludge top cover is fixedly connected with two grips, the left end of the supporting frame is fixedly connected with a sludge guide plate, the sludge guide plate is fixedly connected to the top end of the supporting frame, the sludge guide face of the sludge guide plate is an arc face, two lifting lugs are arranged at the top end of the separation tank, and the saddle and the supporting frame are fixed through bolts. By arranging the sludge top cover and rotating the sludge top cover, sludge at the bottom of the inner cavity of the separation tank is shoveled out through tools such as a shovel, finally, the remaining sludge is washed away through the high-pressure water gun, and compared with the prior art, all the sludge can be cleaned out of the separation tank.

This utility model relates to the field of nutrient soil preparation technology, specifically a tool for preparing biogas residue-based horticultural nutrient soil. It includes a main body, support legs, an extension block, a feeding trough, and a mixing device. The support legs are fixedly connected to the lower surface of the main body, the extension block is fixedly connected to the surface of the support legs, and the feeding trough is fixedly connected to the upper surface of the main body. The mixing device is located inside the main body and includes a mounting plate fixedly connected to the surface of the main body. A motor is fixedly connected to the upper surface of the mounting plate, and a coupling is fixedly connected to the output end of the motor. A mixing shaft is fixedly connected to the inner wall of the coupling, and a support plate is fixedly connected to the surface of the mixing shaft. A support shaft is fixedly connected to the inner wall of the support plate. This utility model, by incorporating a mixing device, facilitates the mixing of biogas residue with other materials, ensuring more thorough mixing and improving the quality of the nutrient soil. This effectively enhances the practicality of the equipment.

The invention discloses a control method of a wine brewing wastewater anaerobic reactor, belongs to the technical field of wastewater biological treatment, and mainly solves the problems of inaccurate judgment of an operation stage and single control strategy in the prior art. According to the method, parameters such as a pH value, COD (Chemical Oxygen Demand), VFA (Volatile Fatty Acid) concentration, biogas yield and ATP (Adenosine Triphosphate) content are monitored in real time, and an operation process is divided into three stages, namely a starting stage, a steady-state stage and an abnormal recovery stage. The load increasing rate and the pH range are controlled in the starting period; in the steady-state period, the water inlet flow is adjusted through a PID algorithm to maintain stable operation; and measures of reducing flow, increasing stirring, adding an alkaline agent and the like are taken in an abnormal recovery period. Through multi-parameter collaborative judgment and differential control strategies, accurate recognition and dynamic adjustment of the operation stage are achieved, the stability and the treatment efficiency of the treatment system are remarkably improved, and the method is suitable for anaerobic biological treatment of various kinds of wine brewing wastewater.

The application provides a method for producing biogas by anaerobic fermentation of pea protein wastewater, and relates to the technical field of biomass energy utilization, wherein the chemical oxygen demand is 10000-15000 mg / L, the ammonia nitrogen is 400-800 mg / L, and the sulfate radical is 600-1000 mg / L; the method comprises the following steps: (1) gradient micro-oxygen hydrolysis acidification pretreatment; (2) physical-chemical and biochemical synergistic intensified pretreatment; and (3) anaerobic methane production. The method for producing biogas by anaerobic fermentation of pea protein wastewater is capable of effectively inhibiting sulfate reducing bacteria, reducing hydrogen sulfide generation, reducing free ammonia toxicity and accelerating hydrolysis of macromolecular organic matter through gradient micro-oxygen hydrolysis acidification. In combination with modified tourmaline ceramic and magnetization synergistic treatment, the microbial activity and mass transfer efficiency are further improved. The whole process can be stably operated, the COD removal rate, the biogas yield and the methane content are significantly improved, and the harmless treatment of the pea protein wastewater and the resource utilization of the biogas are efficiently realized.

The invention relates to a biogas slurry sterilization method and equipment thereof. The invention relates to the technical field of organic waste treatment, and discloses a biogas slurry sterilization method, which is characterized in that chlorine products Cl2, HClO and / or ClO <-> are generated through electrocatalytic electrolysis of biogas slurry for sterilization. The biogas slurry sterilization equipment is characterized in that the biogas slurry sterilization equipment comprises a control cabinet, a reaction tank, positive and negative electrode plates, a stirring water pump, a defoaming water pump and a residual chlorine and conductivity detector, the positive and negative electrode plates are in full parallel connection, the distance between the electrode plates can be adjusted, electrodes are arranged in the reaction tank, and a constant-current power supply is arranged in the control cabinet to supply power to the positive and negative electrode plates. The control cabinet adjusts the magnitude of the current. The stirring water pump is used for uniformly stirring the biogas slurry, the defoaming water pump is used for enhancing gas exchange, the residual chlorine and conductivity detector is used for realizing real-time detection of residual chlorine products (Cl2, HClO and ClO-) and conductivity, the sterilization effect can reach 100%, nutrient substances in the biogas slurry cannot be lost in the sterilization process, returning utilization of the biogas slurry is not affected, and the biogas slurry sterilization device is environmentally friendly and high in safety.