57results about How to "Ease of large-scale industrial application" patented technology

A rare-earth-containing high-silicon Y-type zeolite, the zeolite contains rare earths, is characterized in that the silicon-aluminum ratio of the zeolite is 5-30, the initial unit cell constant is 2.430-2.465 nanometers, and the balance unit cell constant and the initial unit cell constant The ratio is at least 0.985. The zeolite has the characteristics of small initial unit cell constant and large equilibrium unit cell constant. It has high structural stability and hydrothermal stability. The cracking catalyst containing this zeolite is not easy to deactivate. The choice of gasoline, diesel oil, dry gas and coke Good sex.

The invention discloses a method for processing and separate recycling of printing and dyeing wastewater, which comprises the following steps: after the printing and dyeing wastewater is firstly processed by an anaerobic reactor, a hypoxia reactor and an aerobic reactor, the separate recycling of part of the water is used for a desizing process of printing and dyeing technology; then, after the rest wastewater is processed by an aerator biofilter, the separate recycling of the part of the water is used for a boiling-off process of the printing and dyeing technology; then, after the rest wastewater is processed by an ultrafiltration reactor, the separate recycling of the part of the water is used for bleaching process and mercerization process of the printing and dyeing technology; finally, the rest water is processed by an anti-permeability reactor and the separate recycling of the part of the water is used for dyeing process, printing process and ordering process. After being processed by the invention, the printing and dyeing wastewater can be carried out the separate recycling quickly and high-efficiently and the recycling rate of the wastewater reaches more than 70 percent; meanwhile, the fee of processing and recycling the wastewater can be saved; the service life of advanced treatment equipment can be prolonged, which is easy for a large-scale industrialized application.

The invention which discloses a mangneto modified ceramsite filler, a preparation method thereof and an application of the modified filler in wastewater processing belongs to the wastewater processing field. The modified filler is a magnetic filler which treats ceramsite as a base material and contains mixed magnetic powder, a biological affinity substance and a dispersant. The preparation method of the modified filler comprises the following steps: 1, respectively immersing ceramsite in an acid liquor and an alkali liquor; 2, adding modification materials, and processing; and 3, mixing, and molding calcining. A method for improving the biological processing of the wastewater with the modified filler is characterized in that: the mangneto modified ceramsite filler is filled in an aerobic reactor according to a packing ratio of 35-50%, the wastewater is introduced, the retention time is 4-6, the volume loading is controlled at 0.5-2kgCOD / (m<3>.d), and the gas-water ratio in the aeration process is 5-15:1. Characteristics of the mangneto modified ceramsite filler are fully utilized in the invention to allow the wastewater processing efficiency to be improved, the wastewater processing cost to be saved, the service life of advanced processing equipment to be prolonged and large scale industrialization application to be easy.

The invention discloses a hydroxyapatite porous ceramic with controllable macroscopic and microscopic structures and its preparation method and application. The hydroxyapatite porous ceramic first obtains a three-dimensional structure through 3D direct writing molding, and then freezes it by casting The microporous structure is regulated and controlled, and the preparation method is disclosed as adding raw material A to a solvent containing a dispersant and mixing to obtain a suspension, and then adding a gelling agent to the suspension and mixing to obtain a slurry; the raw material A contains hydroxyphosphorus Limestone powder, pass the slurry through the 3D direct writing equipment, and control the slurry to be in a gel state when passing through the direct writing equipment, print and freeze to obtain a green body with a three-dimensional structure, the green body is freeze-dried, and sintered to obtain a macroscopic The hydroxyapatite porous ceramics with controllable microstructure, the invention is the first to realize the efficient combination of direct writing molding and freeze casting technology; the obtained hydroxyapatite porous ceramics can be used as bone scaffolds, which can meet the customization of different bone tissues need.

The invention belongs to the field of biochemical engineering, and discloses a method for producing 3,6-dichloropyrimidine-2-carboxylic acid by biocatalysis. In the method, a nitrilase-producing active cell is taken as a biocatalyst, and a substrate 3,6-dichloro-2-cyanopyridine is hydrolyzed into the 3,6-dichloropyrimidine-2-carboxylic acid in a water-organic solvent biphasic system at the temperature of between 15 and 35 DEG C. In the method, biocatalytic reaction is coupled with product separation, so that the toxicity and inhibition effect of the high-concentration substrate and the product on the cell is effectively overcome, and the product is effectively separated; therefore, the method has the advantages of simple operation, mild reaction condition, and suitability for industrialized production.