32results about How to "Rapid oxidative decomposition" patented technology

The invention discloses an eutrophicated river water quality purifying method. The method comprises the following steps of: intercepting eutrophicated river into upstream, midstream and downstream parts; then conveying water of the upper part into an electrolyzing machine to be electrolyzed; then, discharging the electrolyzed water into the midstream part to be subjected to aeration treatment at the midstream part; and finally, flowing the water subjected to the aeration treatment to the downstream part. The eutrophicated river water quality purifying method adopts a method for firstly electrolyzing and secondly aerating, and can effectively inhibit the growth of algae in the water and an anaerobic reaction of a water body; an organic matter is decomposed, and total nitrogen, total phosphorus and chromaticity in the water are reduced and the odor is removed, so as to improve the river water quality and recover a water ecological system in a shorter time. The invention further discloses a river water quality purifying device, comprising a rubber dam, a water pump, the electrolyzing machine and an aeration device. The river water quality purifying device can be directly mounted in a river to directly purify river water; and the river does not need to be specially leaded to a pre-set structure to be treated, and the river water quality purifying device nearly does not change an environment, so that the influences to a natural environment are smaller.

The invention discloses a method for measuring the content of radioactive elements thorium and uranium in coal gangue. The method comprises the following steps: carrying out microwave digestion on coal gangue in a concentrated nitric acid-concentrated hydrofluoric acid-concentrated hydrogen peroxide system in a closed manner, adding concentrated perchloric acid after the digestion is completed, performing heating on an acid driving instrument to remove fluorine and silicon, heating a sample digestion solution until white smoke comes near, performing cooling, adding nitric acid to dissolve salts, and performing diluting with ultrapure water to obtain a test solution; preparing a series of standard solutions and internal standard solutions, and determining by using an inductively coupled plasma mass spectrometer. According to the invention, hydrogen peroxide is added during microwave digestion, the decomposition of fixed carbon in the sample is obviously promoted, and the dissolution effect of the to-be-detected element is improved. According to the method, the content of the natural radioactive elements thorium and uranium in the coal gangue sample can be rapidly determined, the detection limit of the method reaches 0.0028 mu g/g, the relative standard deviation ranges from 0.75% to 2.54%, and the adding standard recovery rate ranges from 98.00% to 103.60%.

The invention relates to the field of water-soluble fertilizers, and discloses a preparation method of a water-soluble humic acid fertilizer. The preparation method comprises the following steps of: (1) adding mineral source humic acid and a hydrogen peroxide solution into a colloid mill, and introducing ozone for grinding to obtain oxidized mineral source humic acid; (2) continuously adding a potassium hydroxide solution into the colloid mill for grinding to prepare activated mineral source humic acid; (3) adding citric acid, sodium carboxymethyl cellulose and water into the colloid mill forgrinding, and performing filtering to obtain a colloid humic acid mixed solution; and (4) adding the colloidal humic acid mixed solution into monoammonium phosphate, potassium dihydrogen phosphate, potassium sulfate, magnesium nitrate, urea, trace elements and water, performing stirring and dissolving, conducting filtering and concentrating under reduced pressure, and carrying out spray drying toobtain the water-soluble humic acid fertilizer. According to the method disclosed by the invention, humic acid is oxidized and activated in a high-shear colloid mill to form colloid, and indissolvableand insoluble substances are removed in a manner of filtering twice and concentrating once, so that the humic acid fertilizer with good water solubility is obtained.

The invention provides a movable ozone disinfection spray trolley. The trolley comprises a trolley body, a water tank arranged on the trolley body, a water pump connected to the water tank and a sprayer connected with the water pump through a hose, wherein an ozone generator is arranged on the trolley body, the ozone outlet of the ozone generator is connected to the inside of the water tank through a conduit, and the conduit extends into water in the water tank; the trolley body is provided with an control module used for controlling the ozone generator to work, and a mobile power supply which is used for supplying power to the ozone generator, the water pump and the control module. The movable ozone disinfection spray trolley is compact in structure, convenient and flexible, can move freely, and realizes that ozone-containing water can be pumped to a spray nozzle through the sealed hose and sprayed to the ground or air for disinfecting in an atomized manner, wherein the density of ozone is regularly controlled by the ozone generator for regulating.

A technological scheme of treating organic waste water including pre-treatment, photocatalytic treatment and post-treatment, and during the photocatalytic treatment, a powerful reaction system is used and consists of TiO2 or modified TiO2 as catalyst, active carbon fiber net as catalyst carrier, and H2O2, O3 and two-valent ferrous salt as auxiliary oxidants and can result in multiple oxidation process including photocatalytic oxidation, photochemical oxidation, ferriin reagent oxidation, etc. The present invention also provides the specific design of a practical industrial photocatalytic reactor. The present invention is suitable for the effective degradation of organic matter in high-concentration difficult-to-degrade organic waste water.

The invention, which belongs to the technical field of surface treatment of a high molecular material, relates to a method for rapidly removing a high-temperature-resistant fiber polyimide coating layer with low damage. With laser radiation, the temperature of acid liquor at the surface of a coating layer rises quickly and the acid liquor boils; and because of the boiling acid liquor, the polyimide coating layer is processed by oxygenolysis rapidly; and thus an objective of removing the coating layer rapid and completely is achieved. With the method provided by the invention, a coating layer at the end of a fiber as well as a coating layer with any length at any part in the middle of the fiber can be removed quickly; and the surface damage of the fiber core layer by the instantaneous high temperature can be reduced. The coating layer removing speed is fast and the acid liquor amount is reduced; and the operation becomes secure. The method has the high application potential by being compared with other same kinds of methods in related fields like fiber grating sensor packaging and fiber grating writing and is suitable for precise removing of a polyimide coating layer of a high-temperature-resistant fiber.

The invention discloses a high-fluidity high-impact-resistance polypropylene material which is prepared by mixing polypropylene, mixed high-density polyethylene, an elastic composite material, linear low-density polyethylene, a light stabilizer, food-grade white mineral oil, an antioxidant and an activating agent. The mixed high-density polyethylene component is added, so that the elongation at break of the prepared product is increased, high performance can be kept in a low-temperature environment, meanwhile, the low-temperature resistance of the product is improved by adding the linear low-density polyethylene, the low-temperature resistance is close to the low-temperature resistance, the fluidity is improved, and the elastic composite material is matched for mixing and toughening, so that the product can maintain high impact strength and elongation at break in a low-temperature environment, and the addition of the light stabilizer avoids rapid oxygenolysis of tertiary carbon atoms, so that the weather resistance of the product is improved.

The invention discloses a photocatalytic reaction tank. The photocatalytic reaction tank comprises a reaction tank, wherein the upper end of the reaction tank is opened; the opening position of the upper end of the reaction tank is buckled with an upper sealing cover; the bottom part of the reaction tank is welded with support legs; the inner side of the reaction tank is welded with a horizontally-arranged solid-state garbage bearing plate; water leakage holes, of which the upper parts and the lower parts penetrate through each other, are uniformly formed in the solid-state garbage bearing plate; solid-state garbage falls down due to self-weight and a combined action with shifting forks, the scattering effect on the solid-state garbage which are stacked together can be realized, and the solid-state garbage which is dispersed simultaneously can be irradiated by ultraviolet lamp preferably, so that a photocatalyst in the solid-state garbage produces stronger oxidizability, quick oxidative decomposition of organic wastes in the solid-stage garbage can be realized, and the influence on the solid-state garbage caused by organic wastes can be avoided.

The invention discloses the design and manufacturing of functional fiber materials in the field of textile materials, relates to preparation of a fibrous heterogeneous Fenton reaction catalyst, in particular to a manufacturing method for fibers which can catalyze an oxidant (such as hydrogen peroxide and ozone), rapidly and efficiently oxidize and decompose a variety of dyes, and can be reused and be easily separated from water. The manufacturing method uses the technologies of precipitation polymerization, wet spinning, permeability enhancement, iron ion complexation, thermal crosslinking and the like comprehensively, and the obtained fibers can be used for treating dye wastewater and other water bodies containing organic matter. Compared with the existing heterogeneous Fenton reaction catalyst, the obtained fibers have better treatment effects on dye wastewater and the other water bodies containing organic matter. Compared with the Fenton reaction catalyst prepared by the fibers of the same type wet spinning method, the obtained fibers can efficiently oxidize and decompose organic matters at a very high speed to rapidly and effectively purify the water bodies, and simultaneously improve the reusability significantly and reduce the application cost, thereby meeting industrial practical requirements.

The invention relates to a method for removing effluent chromaticity of excrement waste water by biochemical treatment by virtue of catalytic oxidation of active carbon, ultraviolet rays and ozone. The waste water with other indexes meeting the toilet flushing water quality requirements of Urban Sewage Reutilization Urban Miscellaneous Water Quality after the chromaticity being removed by virtue of the biochemical treatment, and the method comprises the steps of primary discoloration treatment and secondary discoloration treatment. The method provided by the invention is simple in operation, high in efficiency, low in cost, free from secondary pollution, and good in economic benefit, environment benefit and social benefit.

The invention relates to a method of treating printing and dyeing wastewater through flocculation oxidation, which comprises the following steps: adding a Co (III) phosphate coordination compound and an oxidizing agent into the printing and dyeing wastewater, stirring, decoloring, static settlement or settling to obtain the treated printing and dyeing wastewater. According to the method, disclosed by the invention, the adding and reaction sequences of various reagents are not needed to consider; the method can be realized through conventional equipment and devices, and special modification is not needed for the equipment; the method can be carried out on natural conditions without illumination.

The invention discloses a degreasing method for a photocuring additive manufacturing precious metal green body, which relates to the technical field of additive manufacturing. The method is used for solving the problems that when precious metal green bodies are degreased, due to the fact that a large number of organic matter in the green bodies cannot be effectively removed, the green bodies are prone to bubbling, cracking and deformation. The method comprises steps that a noble metal green body is put into a porous crucible provided with ceramic powder or ceramic balls; the porous crucible is placed in a tubular sintering furnace, ozone gas is introduced into the tubular sintering furnace, the tubular sintering furnace is heated to 500-550 DEG C at the heating rate of 0.5-3 DEG C/min, after heat preservation is conducted for 1-2 h, the green body is degreased, and the precious metal degreased blank is obtained.