Patents
Literature
Patsnap Copilot is an intelligent assistant for R&D personnel, combined with Patent DNA, to facilitate innovative research.
Patsnap Copilot

197results about How to "No churn" patented technology

Acidic high sulfate organic wastewater treatment process and apparatus

The present invention discloses an acidic high sulfate organic wastewater treatment process and apparatus. The present invention belongs to the technical field of wastewater treatment. The specific process comprises the steps of: (1) neutralization and precipitation treatment: using lime milk to adjust PH of wastewater, and forming CaSO4 precipitation separated from the water; (2) first-stage anaerobic treatment, entering the first-stage anaerobic treatment after neutralization and precipitation treatment, introducing nitrogen into the bottom of an anaerobic reactor with stirring and blowing off, parsing H2S from an aqueous phase into a gas phase above a liquid level, introducing the H2S in the gas phase to a dry desulfurizer for desulfurization, and re-introducing the sulfur removed nitrogen into the first-stage anaerobic reactor for recycling through a blower; and (3) second-stage anaerobic treatment, introducing the sulfur removed wastewater into a second-stage anaerobic reactor to complete an anaerobic methane production reaction, and taking second-stage anaerobic effluent into an aerobic reaction tank for further processing. According to treatment process disclosed by the present invention, inhibition and toxic effects generated by the SO42- and S2- to the anaerobic biological treatment can be effectively reduced, and sewage treatment effects can be improved.
Owner:武汉森泰环保股份有限公司

Bio-preparation method for production of high-purity xylo-oligosaccharide and coproduction of arabinose and xylose

The invention discloses a bio-preparation method for production of high-purity xylo-oligosaccharide and coproduction of arabinose and xylose. The method comprises the following steps of: washing hemicellulose-enriched biomass, performing size mixing pretreatment, adding xylanase, performing enzymolysis, and separating and purifying to obtain mixed liquid glucose; concentrating the mixed liquid glucose until the mass concentration is 50 to 70 percent, and performing chromatographic separation to sequentially obtain AD phase, BD phase, CD phase and BD phase, and concentrating the BD phase to obtain a high-purity xylo-oligosaccharide syrup liquid product; concentrating the CD phase, mixing with cellulosic materials, drying, and crushing to prepare fiber feed; performing yeast fermentation on the AD phase to remove glucose, removing impurities, purifying, concentrating and performing chromatographic separation to obtain the high-purity xylose liquid and arabinose liquid; concentrating the xylose liquid, crystallizing, separating and drying to obtain crystallized xylose; and concentrating arabinose liquid, crystallizing, separating and drying to obtain crystallized arabinose. The invention also provides a bio-preparation method for arabinose and xylose.
Owner:SHANDONG LONGLIVE BIO TECH CO LTD

Core shell catalyst by taking hydrotalcite as shell and molecular sieve as core as well as preparation and application thereof

The invention discloses a core shell catalyst by taking hydrotalcite as a shell and a molecular sieve as a core as well as a preparation and an application thereof. According to the invention, divalent metal source and aluminum species in a core-shell molecular sieve are used for forming a hydrotalcite compound on the surface of the molecular sieve, and the core-shell structure molecular sieve by taking the molecular sieve as the core and the petal hydrotalcite as the shell is formed; after the molecular sieve is reduced, the nano-grade metal-modified molecular sieve catalyst having uniform size, high dispersibility, excellent heat stability and high universality is obtained, and can be used for a catalytic reaction for hydrogenation synthesis of m-dinitrobenzene to obtain m-phenylenediamine. compared with the prior art, the preparation process is simple, the metal atom utilization rate is high, applied metal source is almost completely reacted, no loss is generated, cost is reduced, and pollution on environment is reduced, industrial production is easy, and a series of different metal-modified molecular sieve catalysts can be prepared according to the modifiable character of the composition elements of the hydrotalcite and diversity of a topological structure of the molecular sieve.
Owner:EAST CHINA NORMAL UNIV

Fire truck and fire protection foam system thereof

ActiveCN102049115ANo problem of drowningReduce casualtiesFire rescueFire protectionEngineering
The invention discloses a fire protection foam system for a fire truck. The fire protection foam system comprises a water pot and a foam liquid pot which are used for storing fire protection media, a water pump and a foam pump which are used for pumping the fire protection media, a fire nozzle for outputting the fire protection media, a foam uniformly mixing tube and an air compressor, wherein the outlet of the foam uniformly mixing tube is communicated with the inlet of the fire nozzle, and the inlet of the foam uniformly mixing tube is respectively communicated with the liquid outlet of thewater pump and the liquid outlet of the foam pump; and the compressed air outlet of the air compressor is communicated with the inlet of the foam uniformly mixing tube. The fire protection foam system for the fire truck is provided with compressed air supply equipment; when the fire protection foam system is used, the compressed air and mixed liquid of water and foams firstly enter the foam uniformly mixing tube and are pre-foamed and then jetted by the fire protection fire nozzle with low water consumption. On the basis of the fire protection foam system, the invention also provides the firetruck, which comprises a chassis, a lifting arm frame, a working platform and the fire protection foam system for the fire truck; and the working platform is connected with the chassis through the lifting arm frame.
Owner:XCMG FIRE FIGHTING SAFETY EQUIP CO LTD

Polymer catalytic membrane containing palladium metal activity functional layer and preparation method thereof

The invention relates to a polymer catalytic membrane containing a palladium metal activity functional layer prepared based on the technology of layer-by-layer self assembly and a preparation method thereof, which belongs to the field of catalytic membranes. According to the invention, polyacrylonitrile (PAN) powder, polyethylene glycol (PEG) and polyvinylpyrrolidone (PVP) are dissolved in N,N-dimethyl formamide (DMF), and a PAN flat base membrane is prepared by using a phase inversion process; then the PAN membrane is soaked in a NaOH solution for treatment, which allows surface of the membrane to hydrolyze so as to produce carboxyl groups, thereby enabling the surface of the membrane to carry negative electric charges; a polyethyleneimine (PEI) solution and a potassium chloropalladate K2PdCl4 solution are fully mixed and react for a certain period of time so as to obtain a coordination compound of polyethyleneimine-palladium (PEI-Pd(II)); the treated flat base membrane is alternatively soaked in a solution containing the PEI-Pd(II) coordination compound and a polystyrene sulfonate (PSS) solution for self-assembly of functional layers on the surface of the membrane, and the amount of the assembled layers is controlled; and finally, the membrane obtained after assembly is soaked in a potassium borohydride KBH4 solution, Pd(II) is reduced to be Pd0, and the PAN catalytic membrane containing the palladium metal particle active layer is prepared.
Owner:TIANJIN POLYTECHNIC UNIV

Tank bottom sludge discharging device for oilfield sedimentation tank

The invention provides a tank bottom sludge discharging device for an oilfield sedimentation tank. A tank body is provided with a sludge bearing bottom plate and a sludge collection chamber, the sludge collection chamber is connected with a sludge discharging pump, a sedimentation tank center pipe is connected with a center support connected with a driven gear, the driven gear is in meshed connection with a driving gear, a shaft of the driving gear is connected with a gear motor through a coupling, the gear motor is fixedly connected with a sleeving pipe outside the tank top, four groups of frameworks are fixedly and radially connected around a shaft of the driven gear, bottoms of the frameworks are connected with sludge scraping plates. Sludge is discharged through a tank bottom sludge removal system, the problem of sludge sedimentation at the tank bottom is solved, sludge is discharged thoroughly, no dead zone exists, water resources are saved, the device adopts a mechanical structure and is stable in operation and reliable in performance, a mechanical part of the tank bottom of the sedimentation tank is free of welding structures, a bolt fastening connection method is adopted, an ultrasonic interface sensor is arranged, the automatic tank bottom sludge removal system sets parameters such as the starting frequency, the working time and the like of the device through programs, sludge collection and sludge discharging are controlled automatically and regularly through the programs, and full-automatic operation of the system is realized.
Owner:大庆市考维尔自动化设备制造有限公司

Micro-power municipal sewage treatment equipment and process

The invention discloses micro-power municipal sewage treatment equipment which comprises a tank body as well as a micro-power aeration system, wherein a water inlet tube and a water outlet tube are respectively arranged at the upper parts of two sides of the tank body; a partitioning plate parallel to the tank wall is arranged on one side of the tank body, close to the water inlet tube; the partitioning plate is used for partitioning the tank body into a water inlet area and a reaction area of which the bottoms are mutually communicated; an active sludge layer, a suspension filler layer, a light ceramsite layer and a clean water layer are sequentially arranged in the reaction area from bottom to top in sequence; the micro-power aeration system comprises an aeration pipeline arranged on the active sludge layer, an aerator connected with the aeration pipeline and a power device arranged outside the tank body and used for supplying power to the aerator. The invention further discloses a process for sewage treatment by using the equipment. The equipment and the process disclosed by the invention have the advantages of good treatment effect, high efficiency in nitrogen and phosphorus removal, sludge loss prevention, sludge dead angle prevention, small occupied area, investment preservation, low operation cost, low energy consumption, convenience in operation and management, flexibility in process and the like.
Owner:VISBE XIAMEN ENVIRONMENT TECH CO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products