10results about How to "Efficient destruction" patented technology

The application discloses a regenerated cationic cellulose-based composite filter membrane and a preparation method and nanometer plastic removal application thereof, and belongs to the technical field of regenerated cellulose water treatment filter materials. In the application, a sodium hydroxide-urea-thiourea ternary system is used to fully dissolve cellulose, the cellulose is modified by 2,3-epoxypropyl trimethylammonium chloride cation, a PVDF membrane is used as a base, and a hydrophilic composite filter membrane is prepared by vacuum filtration and loading of a cationized cellulose layer. The preparation process is mild, and the defects of the traditional cellulose membrane, such as insufficient dissolution, uneven pore size and poor screening precision, are solved. The filter membrane surface is positively charged, the hydrophilicity is greatly improved, the water contact angle is only 39°, the particle size of 50-500 nm carboxylated nanometer plastics can be efficiently intercepted, the removal efficiency of 100 nm polystyrene nanometer plastics reaches 97.01%, and the water flux is excellent. The process is green and low-cost, can remove polystyrene, polymethyl methacrylate and polyvinyl chloride nanometer plastics in a wide range, and has a good engineering application prospect in the field of deep treatment of water body nanometer plastic pollution.

The present application relates to oil and gas field development and environmental protection technical field, especially an aging oil demulsification treatment method, comprising: mixing fly ash and sodium hydroxide, then calcining, acid leaching, then mixing with oily sludge and ferroferric oxide, reduction reaction, mixing the reduction reaction product with 3-mercaptopropyl triethoxysilane, modification reaction, to obtain magnetic adsorbent; mixing aging oil, partial phosphate and water, stirring, standing and separating, to obtain pretreated aging oil; adding magnetic adsorbent, complexing agent, wetting reverse agent and demulsifier to the pretreated aging oil, stirring, then microwave irradiation treatment, magnetic separation, vortex separation and centrifugal dewatering, to obtain purified oil. The present application removes FeS particles by magnetic adsorbent, combines with multi-assistant component synergistic demulsification and multi-field coupling physical separation, destroys the stable emulsification system of aging oil, and the process is efficient, suitable for industrial demulsification treatment of high stability aging oil.

The present application relates to a kind of mixed components, sludge coal-water slurry preparation system and its preparation method, which can be low-cost and efficient consumption processing of residual sludge after sewage treatment.Sludge coal-water slurry preparation system includes slurry mixing machine for mixing the coal powder and sludge slurry, slurry mixing machine is divided into coal processing device and sludge processing device 2 paths before setting respectively;Coal processing device includes crusher for crushing raw coal, vibrating screen in order according to its processing process, return device is arranged between crusher, vibrating screen for raw coal that has not passed through screen mesh hole is transported back to crusher;Sludge processing device includes slurry pulverizer for crushing sludge into sludge slurry;Produced coal-water slurry is more suitable for fluidized bed boiler combustion;Slurry preparation system before furnace can also save transportation and storage cost and its influence on surrounding environment.

This invention discloses a method for biotechnology-based conversion of livestock and poultry manure into animal feed, belonging to the field of agricultural waste resource utilization. The method includes: solid-liquid separation and crushing of livestock and poultry manure, adjusting the moisture content to 65%~75%; applying a pulsed electric field to treat the manure, resulting in a microbial cell breakage rate ≥70% and a cellulose crystallinity reduction ≥15%; adding a complex enzyme preparation composed of laccase, manganese peroxidase, xylanase, and lysozyme for enzymatic hydrolysis; after cooling, inoculating a mixed flora of thermophilic Bacillus stearothermophilus and Kluyveromyces martensii acclimated with sodium acetate and phenol; conducting a two-stage fermentation, with an aerobic stage followed by closed, static fermentation; and finally, low-temperature vacuum drying and pulverization to obtain feed protein powder. This invention, through the synergistic effect of pulsed electric field, complex enzyme, and acclimated microbial flora, achieves efficient, safe, and rapid feed utilization of livestock and poultry manure, with a total processing time ≤72 hours, a crude protein content of 28%~35%, and antibiotic residue ≤0.2 mg / kg.

The invention discloses a coal gangue microwave-chemical synergistic activation method and activated coal gangue, the coal gangue microwave-chemical synergistic activation method comprises the following steps: (1) crushing coal gangue to obtain a crushed product; (2) mixing the crushed product with a composite activator, and performing microwave treatment to obtain an activated product; the composite activating agent comprises waste alkali liquor, fly ash aluminum extraction residues and water glass; and (3) drying, cooling and grinding the activated product to obtain the activated coal gangue. The microwave-chemical synergistic activation method for the coal gangue is high in activation efficiency, efficient destruction of crystal lattices of coal gangue minerals is achieved through the synergistic effect of microwaves and the composite activating agent, the activation time is shortened, the silicon-aluminum dissolution rate is increased, the silicon dissolution rate reaches 80% or above, the aluminum dissolution rate reaches 70% or above, the problem that single chemical activation is low in efficiency is solved, and the method is suitable for industrial production. And the obtained activated coal gangue product has high activity.

The application provides a method and system for removing high-concentration complex cyanide in gold extraction wastewater, and relates to the technical field of sewage treatment. The method comprises the following steps: adjusting the pH of the gold extraction wastewater to 8-10 to obtain pretreated wastewater; adding a cobalt ferrite particle catalyst to the pretreated wastewater and introducing ozone to obtain oxidized effluent; dividing the oxidized effluent into solution A and solution B according to the volume ratio, oxidizing solution A under the condition of low dissolved oxygen by using anaerobic ammonia oxidation bacteria, mixing the oxidized solution A with untreated solution B to obtain a mixed solution; and reacting the mixed solution with porous adsorption material and anaerobic ammonia oxidation bacteria, and recycling the cobalt ferrite particle catalyst for circulation. The method used by the application can effectively improve the removal rate of high-concentration complex cyanide, realizes complete mineralization of the complex cyanide, solves the core problem of difficult degradation of the complex cyanide, has strong load resistance, is simple to operate, and has good adaptability.

This application relates to the field of polymer materials technology, specifically disclosing a high-efficiency, long-lasting antibacterial polyester composite material and its preparation method; the high-efficiency, long-lasting antibacterial polyester composite material comprises the following raw materials in parts by weight: 80-95 parts of polyester melt, 0.5-5 parts of composite antibacterial agent, 0.1-1 parts of dispersant, and 0.5-3 parts of interface compatibilizer; the composite antibacterial agent is a complex of nano-zinc dioxide and organic quaternary ammonium salt, wherein the organic quaternary ammonium salt is a double long-chain quaternary ammonium salt; the use of double long-chain quaternary ammonium salt in this application can compensate for the slow onset of action of nano-zinc dioxide, and nano-zinc dioxide can slowly release zinc ions to achieve a long-lasting protective effect. The combination of the two promotes the preparation of polyester material to achieve both good immediate contact sterilization and long-lasting protection.

This invention discloses a method for preparing Ganoderma lucidum and jujube seed compound freeze-dried flash release tablets by enzymatic hydrolysis and fermentation, which relates to the field of traditional Chinese medicine preparation technology. The method includes the following steps: (1) Raw material pretreatment: Jujube seed is crushed and mixed with citrate buffer to obtain jujube seed slurry; Ganoderma lucidum fruiting body is ultra-finely pulverized and mixed with cut lily petals to obtain mixed raw materials. This invention uses a specific ratio of compound enzymes (cellulase, pectinase, β-glucanase) in an optimized acidic environment for enzymatic hydrolysis, which can efficiently and selectively destroy the plant cell walls of jujube seed, Ganoderma lucidum and lily, and fully release the active ingredients in the cells; the subsequent fermentation of Lactobacillus plantarum can further decompose the substrate and may produce new beneficial metabolites, forming a synergistic biotransformation, which greatly improves the extraction rate of total active ingredients and product value.

The invention discloses a photocatalytic material for synchronously removing composite new pollutants in plateau lakes and a preparation method and application of the photocatalytic material, and relates to the technical field of environmental functional materials, the photocatalytic material is a rare earth metal doped silicon dioxide composite material, and the molar ratio of rare earth metal to silicon is 3-15%; the composite new pollutants comprise micro-plastics, antibiotics and dyes. Rare earth doping is carried out on silicon dioxide, the light response range of the material is effectively widened, the separation and migration efficiency of photo-induced electron-hole pairs is remarkably improved, and therefore synchronous and efficient removal of three kinds of new composite pollutants including micro-plastics, antibiotics and dyes in a water body is achieved at the normal temperature and the normal pressure; the prepared 10% La-SiO2 and other rare earth doped silicon dioxide materials show more excellent photocatalytic activity in a plateau strong ultraviolet environment, and have the comprehensive advantages of low raw material cost, environmental friendliness, no need of complex recovery after use and the like.

This invention relates to the field of industrial wastewater treatment, and particularly to a comprehensive treatment method for organic solvent recovery wastewater, specifically toluene recovery wastewater. Before comprehensive treatment, the toluene recovery wastewater undergoes ozone catalytic oxidation pretreatment. This ozone catalytic oxidation pretreatment involves feeding the toluene recovery wastewater into an ozone jet tower for ozone catalytic oxidation pretreatment, controlling the ozone concentration to be 120~160 mg / Nm³. 3 The reaction temperature is 30-40℃; until the toluene concentration is <6mg / L; the effluent after ozone pretreatment undergoes subsequent comprehensive treatment. This invention combines physicochemical and biochemical treatment to achieve efficient pollutant degradation and reduced operating costs.