46results about How to "Flexible process operation" patented technology

The invention discloses a system and a method for treating sewage with biological phosphorus removal and bypath chemical phosphorus removal. The system comprises a nitrogen-phosphorus removal subsystem and a bypath phosphorus removal subsystem, wherein the nitrogen-phosphorus removal subsystem is formed by connecting an anaerobic tank, an anoxic tank, an aeration tank, a sedimentation tank, a sludge return tank and a sludge return pump in turn, wherein the water outlet of the sludge return tank is connected to a sewage inlet of the anaerobic tank through a sludge return pump via pipelines; the bypath phosphorus removal subsystem is formed by connecting a mixing tank, an anaerobic phosphorus release sedimentation tank, a mixing reaction tank and a second sedimentation tank in turn; and the water outlet of the sludge return tank of the nitrogen-phosphorus removal subsystem is communicated with the water inlet of the mixing tank through the sludge return pump. The treatment system is simple in structure, organically combines the biological phosphorus removal with the chemical phosphorus removal, effectively solves the disadvantages that the biological phosphorus removal is low in efficiency and the pure chemical phosphorus removal remains high in operation cost, and has the advantages of good phosphorus removal effect and less medicament cost than the pure chemical phosphorus removal.

The invention relates to a method for manufacturing a micronanostructure on the surface of a material, in particular to the method for manufacturing the micronanostructure on the surface of a block amorphous alloy. The method is characterized by comprising the following steps of: completely cleaning oxide, oils and fats from the surface of the block amorphous alloy in a conventional way; making the surface of the block amorphous alloy, required to be processed, in a vacuum or inert gas protection state in a proper way; and rolling the surface required to be processed under the action of a given pressure with a roller-shaped die which is heated to an enough high temperature so as to obtain the block amorphous alloy surface with the micronanostructure. The surface manufactured by the methodis high in quality, low in processing cost, high in processing efficiency and flexible in technical operation.

The invention relates to an organic waste water treatment technology, in particular to a micro-aerated biological filter. According to the technical proposal provided by the invention, the micro-aerated biological filter comprises a first filter and a second filter, which is characterized in that: the first filter is thereon provided with a sewage import pipe and is internally provided with a filter chamber which is vertically provided with a plurality of bamboo tubes which are parallel to each other, the bottom end of each bamboo tube is communicated with the bottom of the first filter, and the top end of each bamboo tube is communicated with an overflow tank of the first filter; the second filter is internally provided with a biological bed which can be moved out or moved in, a massive filter material is placed in the biological bed, the second filter below the biological bed is internally provided with an aeration head, and the second filter above the biological bed is internally provided with a drain pipe; the second filter is internally provided with a flow guiding chamber which guides waste water to the bottom of the biological bed, and the flow guiding chamber is communicated with the overflow tank. The invention shortens biological reaction time, reduces equipment investment and simplifies operation process.

The invention discloses a directed catalytic cracking device and method. A reaction atmosphere in a reaction tube of an upper stage furnace is laid to a catalyst bed through a first gas distributor toactivate reaction gas, the reaction atmosphere generates free radicals under the action of a catalyst, the free radicals contact with free radicals produced by pyrolysis of the raw materials in a rawmaterial bed, a gaseous product is laid to a catalyst A bed through a third gas distributor, the catalyst A bed catalytically cracks the gaseous product of pyrolysis, the catalytic cracking product is fed into a catalyst B bed and is subjected to type-selective catalysis, and the type-selective catalysis product is fed into a condensation device and is condensed to form liquid tar. The device combines pyrolysis of coal, biomass and the like, a tar yield increasing process and orientation control of a product distribution process, simplifies the overall processes, is environmentally friendly,reduces the energy consumption cost, improves the production efficiency, is suitable for large-scale production and is suitable for industrial promotion and application.

The invention relates to an electromagnetic stirring auxiliary argon arc welding repairing method for a cast magnesium alloy aviation component, and belongs to the technical field of argon arc welding. According to the method, for the cast magnesium alloy aviation component which is cracked and corroded and has other defects after servicing, a welding stick made of the same parent metal or similar components is selected, reasonable electromagnetic stirring and argon arc welding repairing technology parameters are adopted, and cracks and corrosive defects on the component are repaired, wherein the phi of the welding stick ranges from 1.0 mm to 1.6 mm. The repaired part deformation is in the tolerance range, the defects of cracks and incomplete fusion are avoided, and a repairing connector with few metallurgy defects and excellent performance is formed.

The invention provides an oxygen-free steam carbonization method for cotton straws. The method comprises the following steps: cutting the cotton straws into section materials, immersing the cotton straw section materials in an NH4Cl solution, taking out the immersed cotton straw section materials, draining off the section materials, putting the drained-off cotton straw section materials into a container, carrying out steam heating for carbonization, cooling to room temperature, washing and drying, thus obtaining biomass charcoal. The biomass charcoal obtained through the method is large in specific surface area, good in pore structure and high in organic carbon content, and has a good improvement effect when used for soil improvement.

The invention discloses a method for preparing a chrome tanning agent from a waste chrome tanning liquid. The method is characterized by comprising the following steps: collecting the waste chrome tanning liquid after tanning is completed, precipitating chrome by using alkali, and performing plate-frame pressure filtration to obtain chrome cakes; performing acidolysis on the chrome cakes by using sulfuric acid, cooling, filtering to obtain filtrate, adjusting the pH value to 2.0-2.5, separating by using a cation-exchange chromatography, measuring the content of the component chrome, adding corresponding parts of sodium formate and sodium acetate according to the contents of negative and neutral components, dissolving, boiling to concentrate until the final solid content is up to 50%, cooling for one hour, separating by using the cation-exchange chromatography, measuring the content of the component chrome, performing aging reaction for 4-7 days according to the contents of the negative and neutral components until the contents of the negative and neutral components are up to 75-84%, diluting for 6 times with water, adjusting the pH value to be 3.8-4.0, placing to stand for 6 hours until the contents of the negative and neutral components are 40-50%, and the content of a high electric charge component with the valence greater than +4 is 17-22%. The method for preparing the chrome tanning agent from the waste chrome tanning liquid is simple and flexible to operate, high in yield, excellent in property of the tanning agent, and applicable to tanning of first-layer high-class leather and second-layer leather of cattle, sheep, pigs and the like.

The invention provides a manufacturing process of an IBC battery assembly. The manufacturing process improves the assembly efficiency of the battery assembly, ensures the yield and further ensures thepower generation efficiency of IBC battery pieces. The process comprises the following specific steps: S1,carrying out laser cutting: firstly, carrying out laser cutting on a whole battery piece, andforming (n-1) laser scratches on the battery piece to make the battery piece divided into n small battery pieces; S2, coating insulating glue : presetting a certain number of extraction electrodes onareas arranged along the length direction at the two sides of each of the n small battery pieces, and meanwhile, coating the peripheries of the extraction electrodes with insulating glue; S3, curingthe insulating glue: curing the battery pieces coated with the insulating glue; S4, coating solder paste: coating the solder paste at the positions of the corresponding preset extraction electrodes onthe small battery pieces; S5, arranging the battery pieces: arranging the small battery pieces in a positive-negative series connection manner; S6, placing a series solder strip; and S7, welding thesolder strip: welding the solder strip and the solder paste at the corresponding positions to conduct the solder strip and the solder paste.

The invention discloses a preparing method for nano-copper powder. The preparing method for the nano-copper powder is characterized by comprising the following steps that a mixture composed of copper nitrate and graphite serves as a raw material, the raw material is added into an organic monomer solution, suspension liquid is obtained through ball milling, and then the suspension liquid is gelatinized under the action of an initiating agent and a catalyst to obtain wet gel; the wet gel is dried to obtain dried gel; the dried gel is calcined to obtain hybrid precursor powder composed of copper dioxide and copper; reduction is performed on the hybrid precursor powder in a hydrogen gas atmosphere to obtain the nano-copper powder. According to the preparing method for the nano-copper powder, required raw materials are low in price and easy to obtain, the process is simple, the protection condition of high pressure or inert atmosphere in the reaction process is not required, the method does not have special requirements for a reaction device, production cost is greatly lowered, and therefore the method is applicable to industrial production. The productive rate of the nano-copper powder manufactured through the method is high and can reach more than 96 percent, and the obtained product is of a similar spherical shape and has the advantages that the degree of purity is high, the range of particle size distribution is narrow, agglomeration does not exist, and dispersity is good.

The invention discloses a preparation method of a moderately-dried solid microbial fermented livestock fodder. The preparation method of the moderately-dried solid microbial fermented livestock fodder provided by the invention comprises the following steps: drying a fodder directly prepared by solid microbial fermentation to enable the water content of the fodder to be 16%-22% so as to obtain the solid microbial fermented livestock fodder, wherein a fluidized drying mode is adopted preferably. The invention also discloses the solid microbial fermented livestock fodder produced according to the method. According to the method disclosed by the invention, the technological operation is simple, convenient and flexible, the equipment investment is low, and the produced solid microbial fermented livestock fodder can satisfy the requirements on market circulation time, also can adapt to changes of various storage environment conditions, and especially can adapt to the changes of seasons and site environments, so that the solid microbial fermented livestock fodder is suitable for popularization and application in the vast rural areas of China.

The invention discloses a short-cut nitrification and anaerobic ammonia oxidation integrated-endogenous short-cut denitrification and anaerobic ammonia oxidation integrated domestic sewage treatment process and belongs to the field of biological sewage treatment. Involved devices mainly comprise a water inlet tank, a first SBBR, a second SBBR, two middle water tanks and a water outlet tank. Domestic sewage firstly enters the first No.1 SBBR for anaerobic stirring to store an internal carbon source; an effluent enters a the second SBBR for synchronous short-cut nitrification anaerobic ammonia oxidation reaction, most ammonia nitrogen is removed, and nitrate nitrogen and nitrogen are generated; and then the effluent enters the first SBBR again for synchronous endogenous short-cut denitrification anaerobic ammonia oxidation reaction to generate a small amount of nitrate nitrogen and nitrogen. Advantages of organic matters in the domestic sewage and the anaerobic ammonia oxidation reactionare fully utilized, high efficiency and energy saving are realized, and deep denitrification of the domestic sewage can be realized.

The invention discloses an urban sewage plant upgrading and reconstruction treatment process and system, and belongs to the technical field of sewage treatment. The system consists of an anaerobic tank, an anoxic tank, an aerobic tank, an oxygen elimination tank and an MBR tank, an internal carbon source in inlet water can be fully utilized for denitrification through sectional water inlet, and reflux liquid obtained after oxygen elimination of the oxygen elimination tank does not contain dissolved oxygen so that the carbon source in the anoxic tank only supplies denitrifying bacteria for denitrification; the tail end of the anoxic tank flows back to the anaerobic tank so that a single anaerobic phosphorus release reaction is carried out in the anaerobic zone, and denitrifying bacteria andphosphorus-accumulating bacteria do not compete for organic matters. Phosphorus release in the anaerobic zone and denitrification in the anoxic zone are carried out respectively and do not influenceeach other. The process can stably reach the standard IV water standards (COD is less than 30mg/L, BOD is less than 6mg/L, NH4 + -N is less than 1.5 (2.5) mg/L, TN is less than 15mg/L, TP is less than0.3 mg/L and SS is less than 5mg/L).

The invention discloses a water-based paint wastewater treatment device which is characterized in that a pipeline is sequentially connected with a water collecting tank, a pH adjusting tank, a coagulating sedimentation tank, an advanced oxidation tank, an UASB (upflow anaerobic sludge blanket), a SBR (sequencing batch reactor), a MBBR (moving bed biofilm reactor) and a water production tank; aftersludge generated in each stage is treated, filtrate flows back, and mud cakes are transported outwards. By adopting the technical scheme, the water-based paint wastewater treatment device disclosed by the invention, after water-based paint wastewater is subjected to pH adjustment, coagulating sedimentation and advanced oxidation, and is sequentially treated by the UASB, the SBR and the MBBR, discharged water can be discharged or recycled, the production cost is reduced, the environmental pollution is reduced, and water resources are saved.

The invention relates to a device and a method for continuously synthesizing sulfolene. The process comprises the following steps: continuously putting a butadiene raw material, a polymerization inhibitor and a sulfur dioxide raw material into a reaction kettle A and a reaction kettle B according to a proportion to carry out a synthesis reaction, controlling a reaction mixture through a back pressure valve, and putting a sulfolene product into a blow-off tank after primary flash evaporation and secondary flash evaporation; introducing synthesis tail gas into a condenser and a freezing tank through a buffer tank for cryogenic recovery and then recycling. The continuous synthesis process of sulfolene, provided by the invention, has the advantages of low equipment investment, flexible processoperation, high product yield, effective recycling of raw materials, and reduced production cost. In addition, the exhaust emission is reduced and clean production is realized.

The invention discloses a naphtha catalytic reforming method of by-product reduction hydrogen. When a reforming apparatus is normally operated, a random reforming reactor is cut, a platinum rhenium catalyst in the reactor is subjected to regeneration processing; then the reduced reforming catalyst has high hydrogenolysis activity, the reforming hydrogen obtained by the other reactor is processed, the contained C2<+> hydrocarbon is subjected to hydrogenolysis to carbon and methane, volume content of C2<+> in hydrogen storage is greatly reduced, and the requirement of commencement of works of the reforming catalyst is satisfied. Compared with the prior art, disadvantages of the low octane number of the gasoline obtained by catalytic reforming due to low temperature hydrogen storage, usage amount of C2<+> hydrocarbon used for active carbon adsorption, and low equipment utilization rate are overcome, and the method has the characteristic of flexible process operation.

The invention discloses an automatic efficient purification system for total nitrogen of water and a method of the automatic efficient purification system. The system comprises a purification system (1), a modification system (2), a total nitrogen detection system (3) and a denitrification system (4), wherein the purification system (1), the total nitrogen detection system (3) and the denitrification system (4) are sequentially connected, and the modification system (2) is connected to the purification system (1); the purification system (1) is used for supplying oxygen to microbes on a biochar matrix by using plant root system action and improving nitrification. The modification system (2) is used for carrying out aeration modification on the biochar matrix (1-2) through an aeration pump(2-1), so as to improve the microbial activity of the biochar matrix (1-2). The total nitrogen detection system (3) is used for monitoring total nitrogen in water, and the denitrification system (4) is started up to perform refluxing when the total nitrogen exceeds a set standard value, so as to improve hydraulic conditions and improve a denitrification effect. The system and the method are high in denitrification efficiency, good in treatment effect, small in investment and low in operating cost, biochar is subjected to resource-converting utilization, and in-situ purification does not need afloor area.