35results about How to "Improve the efficiency of biogas production" patented technology

The invention discloses an operating method of a CSTR integrated reactor in a marsh gas resourceful treatment system. In the CSTR integrated reactor, a reverse-flow system and a reverse stirring device are added, so that the stirring efficiencies for smashed straw and anaerobic fermentation liquid can be effectively improved; in the stirring process, a material can form convection between two stirring blades, so that the problem that the traditional blender only stirs but not mixes the material is solved, and thus the efficiency of producing methane by adopting straw is improved; meanwhile, a screw propeller is arranged at a material outlet, so that a waste material can be rapidly discharged from a tank.

The invention relates to a method for the anaerobic fermentation of bloom-forming cyanobacteria, and belongs to the technical field of the agricultural environmental protection. The method comprises the following steps: pumping the bloom-forming cyanobacteria to a zigzag type acidification pool; and pumping the bloom-forming cyanobacteria after being subjected to acidification treatment to an agitating type anaerobic digestion tank after being improved, so as to generate marsh gas after the anaerobic fermentation. Through combining the promotion or unload or transportation process of the bloom-forming cyanobacteria with deswelling treatment, the investment of a deswelling dedicated device is reduced; the cost is reduced; the effective volume of the subsequent anaerobic digestion tank is improved through the mechanical action of a pump and the extension of the acidification time of the cyanobacteria; and the retention time of the bloom-forming cyanobacteria in the anaerobic digestion tank is shortened; through adding an agitator at the upper part of the digestion tank, the bloom-forming cyanobacteria and sludge at the bottom are fully in contact mixture, thereby increasing the gas production rate of the volume and the organic load, and improving the running efficiency of engineering.

The invention discloses a device for preparing biogas by three-stage co-fermentation of straw and manure, which comprises an open and closed aerobic hydrolysis leaching tank, a liquid acidification tank, an anaerobic fermentation tank, an aerobic composting device, and livestock and poultry manure Collection pond, lime water pond, high solute liquid collection pond, hydrogen sulfide gas absorber, ammonia gas absorber and system automatic control cabinet; the invention also discloses a method for preparing biogas by three-stage co-fermentation of straw and manure, including Three consecutive co-fermentation processes of aerobic hydrolysis of straw manure, rapid acidification of high solute liquid and high buffer anaerobic fermentation. The invention provides a three-stage biogas fermentation method and supporting equipment for co-producing fertilizer and gas with refractory straw combined with high-nitrogen perishable livestock and poultry manure, by improving the hydrolysis conversion efficiency of straw and reducing the inhibition of anaerobic fermentation process To improve the efficiency of anaerobic fermentation, realize efficient recycling of resources, and reduce the pollution load of biogas slurry.

The invention provides an anaerobic digestion treatment method for kitchen waste, which belongs to the technical field of kitchen waste treatment. It solves the problems that resources are wasted to a certain extent in the existing garbage disposal methods, which are not environmentally friendly, and there are still many disadvantages in aerobic composting and anaerobic digestion. The present invention comprises the following steps: ①, pretreat the kitchen waste, and separate oil and water-solid mixed liquid; ②, send the water-solid mixed liquid into a homogeneous pool and mix thoroughly; ③, send the thoroughly mixed water-solid mixed liquid into Anaerobic digestion is carried out in the anaerobic fermentation device, and anaerobic digestion produces biogas, biogas residue and biogas slurry; ④, the generated biogas residue is added to the aerobic composting device for thermal composting, and at the same time, the aerobic composting device is continuously filled with straw and / or nutrients such as garden waste. The invention has the advantages that the anaerobic digestion technology and the aerobic composting technology complement each other; the continuous feeding and the two-phase process of a single anaerobic tank are realized by adopting two-stage feeding cabins; and multiple kinds of garbage are processed simultaneously.

A method for preparing biogas by utilizing irradiation pretreated crop straws, comprising placing the dry cut crop straws in an irradiation device, and irradiating them at a dose of 600kGy-1200kGy. 60 After being irradiated with Co-γ rays, mix with the inoculum at a ratio of 1:1.5-5 according to the volatile solid concentration, add biochar with a total weight of 2%-8% of the total weight of crop straw and inoculum, mix well, and use as fermentation and control the total solid concentration of the fermented body to be between 20% and 28%, and carry out anaerobic digestion at 35℃-39℃ for 20-24 days. The method has the advantages of simple operation, high utilization rate of straw, fast fermentation speed, stable gas production, and methane yield (without CO). 2 ) can reach 200-250L / kgVS, no biogas slurry is produced in the whole process, and the biogas residue is fully fermented.

The invention relates to a high-efficiency straw fermentation method using straw silage to increase biogas production, which comprises the following steps: 1). Raw material processing: crushing freshly harvested green straw to form straw scraps; 2). Soaking the silage additive: soaking the straw Put the crushed material into the silage additive solution and soak for 30-120 minutes. The silage additive adopts a metal salt solution with a mass percentage concentration of 0.5%-20%. 3). Vacuum silage: put the soaked straw fragments and silage additive mixture into a sealed container, and the sealed container is evacuated by a vacuum pump to form an anaerobic environment, and stored in a vacuum airtight manner for 30-120 days to obtain silage straw; 4 ). Biogas production by anaerobic fermentation: the obtained silage straw is subjected to anaerobic fermentation, and the mass ratio of the anaerobic fermentation inoculum to the dry matter of the silage straw is 1:1‑50. The invention can effectively increase the amount of biogas produced by the straw, so as to finally realize resourceful utilization of the straw with high efficiency and low cost.

The invention relates to a device and method for decreasing the kasugamycin content in kasugamycin residue. A direct current electrophoresis and macromolecular glue separation technology is adopted, as for the adopted device, macromolecular glue is placed in a general electrophoresis device, a square hole is dug in the macromolecular glue, the macromolecular glue is arranged at the bottom layer ofthe hole to serve as an underskirt, PBS, a 0.8% sodium chloride solution and a Tris-HCl buffer solution serve as an electrolyte, and the kasugamycin residue is put into the square hole of the macromolecular glue or is directly subjected to electrophoresis. According to the device, kasugamycin in the kasugamycin residue can be well removed, thus the kasugamycin can be subjected to better resourceutilization, in addition, the macromolecular glue is a biodegradable material, the kasugamycin in the residue enters the macromolecular glue through electrophoresis, and the kasugamycin entering the macromolecular glue can be reutilized through the separation technology, wherein the macromolecular glue with the kasugamycin being removed can be recycled.

The invention relates to a biogas digester for recycling urban garbage based on a BIM (building information modeling) technology. The biogas digester comprises a biogas producing mechanism and a BIM operation and maintenance controller, wherein the biogas producing mechanism comprises a main body, a heating mechanism and a central control mechanism; an opening and closing mechanism is arranged at the top of the main body; the opening and closing mechanism comprises a driving assembly, a transmission assembly and an opening and closing assembly; the transmission assembly comprises a first gear, a first transmission shaft, a second transmission shaft, a second gear and a third gear; the heating mechanism comprises a heating assembly and a stirring assembly. In the biogas digester for recycling the urban garbage based on the BIM technology, according to the rise and fall of the medium water level in a water pressure compartment, the driving assembly controls the opening and closing assembly through the transmission assembly to achieve opening and closing of a second through hole in a top cap, so that automatic biogas collection of the biogas digester is achieved and the practicality of the biogas digester is improved; furthermore, through coordination of the heating assembly and the stirring assembly, the main body is uniformly heated, the biogas production efficiency is improved, and the practicality of the biogas digester is improved.

The invention discloses a method for producing biogas by taking molasses as a substrate. The method can be used for turning waste into wealth, the fermentation scale can be adjusted according to practical needs, the biogas generation efficiency is high, acidification does not occur easily in the fermentation process, and the problem of solid and semisolid raw materials is avoided in the collection and transportation of raw materials; compared with the technology taking the wastewater of molasses fermentation ethanol as a substrate, the molasses substrate adopted by the method disclosed by the invention contains a large amount of fermentable sugar as well as a large amount of fermentable components, the organic components in the molasses are efficiently utilized and directly applied to biogas fermentation, and thus the biogas fermentation efficiency and effect are better; moreover, the adopted technology and equipment are simpler, and a hydrolysis process of lignocellulose raw material is avoided; by adopting the method disclosed by the invention, the biogas fermentation technology is popularized in the regions with abundant molasses sources, and the development of renewable energy of the country and even the world is greatly accelerated.