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628results about How to "Achieve removal" patented technology

Method and system for laser deicing for power transmission and transformation equipment

The invention discloses a method and a system for laser deicing for power transmission and transformation equipment. The method comprises the steps of: adopting laser frequency conversion technology and a galvanometer scanning focusing principle; adopting a continuous or long-pulse solid laser as core deicing equipment; outputting infrared laser, partially converting the infrared laser into visible laser; coaxially outputting the infrared laser and the visible laser; focusing and irradiating on an ice-covering area of the power transmission and transformation equipment to deice through a collimating mirror, two scanning galvanometers and a focusing mirror; adopting control equipment to control the opportunity and the time of laser output of the laser and the vibration of the scanning galvanometers to ensure that the laser irradiated on the ice-covering area of the power transmission and transformation equipment performs two-dimensional mobile scanning; and observing the irradiation position of the visible laser through a tracking and aiming device to prevent the laser from damaging the power transmission and transformation equipment. The system has small volume and light weight, realizes the long-distance focusing of the laser, is favorable for removing large-area ice coating, realizes the tracking and observation of the laser deicing, prevents the laser from damaging the power transmission and transformation equipment, and can remove ice layers under the condition of no poweroff for a conducting wire iron tower; and the system can also be used for the deicing of the power transmission and transformation equipment such as insulators, overhead transmission lines, iron towers and the like.
Owner:WUHAN NARI LIABILITY OF STATE GRID ELECTRIC POWER RES INST +1

Absorption tower for desulfurization and denitrification combined with oxidant in forward-flow and back-flow spraying and method

The invention discloses an absorption tower for desulfurization and denitrification combined with an oxidant in forward-flow and back-flow spraying mode and a method. The absorption tower includes two washing sections: a first section is a desulfurization loop and arranged on the lower portion of the absorption tower, and sulfur dioxide and hydrogen chloride are removed through slurry forward-flow and back-flow and smoke contact cleaning; a second section cleans oxidized smoke pollutants in slurry back-flow and smoke contact mode mainly for removing oxynitride and heavy metal mercury. A slurry divider is arranged between the two cleaning sections, the bottom of the slurry divider is an oxidization area, and strong oxidant is sprayed in the area. For reducing consumption of the oxidant, a catalyst is added in second-loop slurry for achieving auxiliary oxidization. Sulfur dioxide, oxynitride, heavy metal mercury and the like can be removed simultaneously in a washing tower by the technology, and the absorption tower has the advantages of being high in efficient and simple and suitable for various combustion devices including fuel coal power stations, refuse incineration plants, organic and inorganic production enterprises and the like.
Owner:NORTH CHINA ELECTRIC POWER UNIV (BAODING) +1

Transportation magnetic separation equipment for crushing and processing construction waste

The invention discloses a transportation magnetic separation equipment for crushing and processing construction waste, which comprises a frame, a transmission box, a magnetic separation roller and a conveyor belt. The transmission box is installed on the upper end of the frame, and a conveyor frame is installed inside the transmission box , a driving roller and a magnetic separation roller are installed on the conveyor frame, and a conveyor belt is set between the driving roller and the magnetic separation roller; the upper left end of the transmission box is welded with a construction waste adding bucket, and the bottom of the construction waste adding bucket is A crushing roller is installed inside; the right end of the conveyor belt is provided with a winnowing chamber, and the bottom side of the right end of the conveyor belt is installed in sequence from left to right with an iron collection box, a heavy material box, a light material box, a slag collection box and Dust settling box; it is convenient to add construction waste into the hopper and crush it through the two crushing rollers; the magnetic separation roller absorbs and screens the construction waste containing ferromagnetism to realize the crushing and transportation of construction waste , Removal of ferromagnetism, screening, separation and dust removal, the operation is convenient and quick.
Owner:寿涵红

Ultrasonic control shear thickening and polishing method and device

ActiveCN104191320AAchieve removalStrong shear thickeningVibration amplitudePolishing
An ultrasonic control shear thickening and polishing method comprises the following steps of 1 adding a non-Newtonian fluid polishing solution mixed with abrasive particles and having the shear thickening effect into a polishing pond and fixing a workpiece on a clamp, wherein the clamp is located above the polishing pond; 2 starting a polishing solution circulating system to enable the non-Newtonian fluid polishing solution to be circularly pumped out of the bottom of the polishing solution and fed into the upper portion of the polishing pond; 3 starting an ultrasonic wave generating device, and meanwhile setting the vibration frequency and vibration amplitude to enable the non-Newtonian fluid polishing solution in the polishing pond to rapidly vibrate and produce a strong shear thickening phenomenon; 4 adjusting the clamp to enable the workpiece to perform relative motion, wherein the abrasive particles having the polishing effect produce the micro-cutting effect or chemical mechanical effect on the workpiece to remove materials on the workpiece surface, and accordingly the workpiece surface polishing is achieved. The invention further provides an ultrasonic control shear thickening and polishing device. The ultrasonic control shear thickening and polishing method and device is high in polishing efficiency and low in cost.
Owner:ZHEJIANG UNIV OF TECH

Zonal vertical current artificial wetland system with reinforced denitrification function

The invention relates to a zonal vertical current artificial wetland system with a reinforced denitrification function, which comprises an upper layer and a lower layer. The upper layer is a nitrification reinforcing zone; the lower layer is a denitrification reinforcing zone; the upper layer comprises a water distribution pipe, a wetland fine filler zone, reoxygenation reinforcing and solid source supplementing pipes, an ammonia nitrogen adsorption-regeneration zone and wetland plants; the lower layer comprises a gravel transition layer, a solid carbon source filling zone, a wetland filler zone, a water collecting zone, water collecting pipes and a siphon drainage pipe; the water collecting pipes are positioned in the water collecting zone and are positioned at the bottommost layer of the wetland system together; the wetland filler zone, the solid carbon source filling zone, the gravel transition layer, the ammonia nitrogen adsorption-regeneration zone and the wetland fine filler zone are sequentially arranged above the water collecting pipes; and the wetland plants are planted on the surface layer of a wetland. The system disclosed by the invention has the advantages of strong continuous denitrification capacity, low operation cost, simplicity in maintenance and the like.
Owner:CHINESE RES ACAD OF ENVIRONMENTAL SCI

Tidal current wetland coupled electrochemical reinforced denitrification and dephosphorization method and system

The invention belongs to the field of sewage treatment, and relates to a tidal current wetland coupled electrochemical reinforced denitrification and dephosphorization method and system. The system comprises a tidal current artificial wetland aerobic bed (1), an anaerobic electrolysis bed (2) positioned on the lower part of the tidal current artificial wetland aerobic bed (1), and a system reflux pump (8) for connecting the tidal current artificial wetland aerobic bed (1) and the anaerobic electrolysis bed (2), wherein the tidal current artificial wetland aerobic bed (1) is communicated with a water inlet pipe (5) of an arranged pump, and planted with wetland plants (9); a first plate electrode (4) and a second plate electrode (11) are arranged inside the anaerobic electrolysis bed (2) and respectively connected with electrodes of a direct current power supply (3), and the bottom of the anaerobic electrolysis bed (2) is provided with a draining valve (6); and the positive and negative electrodes of the direct current power supply (3) can be exchanged regularly. The invention can reinforce the removal effect of nitrate and phosphate in the tidal current artificial wetland bed, and solve the problem that the operation of the wetland sewage treatment is greatly influenced by the seasonal changes, and the like.
Owner:CHINA AGRI UNIV

Advanced oxidative coupling device and process for treating organic wastewater difficult to degrade

The invention discloses an advanced oxidative coupling device and process for treating organic wastewater difficult to degrade. A main device body comprises an ozone oxidation-multi-dimensional electro-catalysis/microelectrolysis area, an ozone oxidation-microelectrolysis/Fenton area, a coagulation area and an inclined plate sedimentation area, wherein the ozone oxidation-multi-dimensional electro-catalysis/microelectrolysis area comprises a multi-dimensional electrolysis/microelectrolysis area at the upper part and an ozone oxidation area at the lower part; the ozone oxidation-microelectrolysis/Fenton area comprises a microelectrolysis/Fenton area at the upper part and an ozone oxidation area at the lower part. The device combines four levels of advanced oxidation systems, and electrocatalytic oxidation, ozone oxidation, Fenton oxidation and a microelectrolysis reaction are mutually coupled in function, so that an organic matter difficult to degrade is subjected to multi-level oxidation to realize complete oxidative cracking; when the device is used for treating the organic wastewater difficult to degrade, the yield and the production rate of *OH are increased, the liquid phase transfer process is accelerated, the overall current efficiency of the device is increased, operation expenses are saved, flexible regulation and control of a process unit are realized, and the device can be used for treating various kinds of organic wastewater difficult to degrade.
Owner:AEROSPACE KAITIAN ENVIRONMENTAL TECH CO LTD +1

Comprehensive utilization method for aluminum oxide red mud

The invention belongs to the technical field of metallurgy and environmental protection, and particularly relates to a comprehensive utilization method for aluminum oxide red mud. The comprehensive utilization method for the aluminum oxide red mud aims at solving the problem that the aluminum oxide red mud is difficult to treat and recycle effectively, the red mud is treated by adopting a vacuum thermal reduction method, carbon or aluminum serves as a reducing agent, iron oxide in the red mud is reduced into metal iron under a vacuum condition, then iron in reducing slag is separated out through magnetic separation to be used for producing reduced iron powder, combined-state sodium oxide is reduced into metallic sodium and is distilled out, and therefore, the purposes of dealkalization and alkali recovery from the red mud can be achieved; and meanwhile, other valuable substances (such as scandium, niobium, cesium) in the red mud are reduced to metallic states and form an alloy with aluminum so as to be separated from the slag with the main components being silicon oxide and aluminum oxide, and therefore the effects of harmless treatment of the aluminum oxide red mud and comprehensive recovery and utilization of the valuable elements can be achieved, and no waste gas, waste water, waste slag or other secondary pollution is generated in the treatment process.
Owner:NORTHEASTERN UNIV

Preparation technology of diethylene triamine pentacetic acid modified polyvinylidene fluoride separation membrane and resin

The invention provides a technology for preparing a diethylene triamine pentacetic acid modified polyvinylidene fluoride separation membrane by a physical blending/phase transition technology and a chemical grafting blending/ phase transition technology. The technology is as follows: reagents such as diethylene triamine pentacetic acid, polyvinylidene fluoride, melamine, dimethyl sulfoxide, acrylic acid, polyvinylpyrrolidone and the like are taken as raw materials; diethylene triamine pentacetic acid polyamino and polycarboxylic acid compound is uniformly mixed in a polyvinylidene fluoride separation membrane and resin respectively by the physical blending/phase transition technology and the chemical grafting blending/ phase transition technology. The technology improves the hydrophobic properties of the conventional polyvinylidene fluoride micro-filtration separation film and the resin, realizes metallic ions in waste water, and has the advantages of simple operation, uniform blending and the like. The diethylene triamine pentacetic acid modified polyvinylidene fluoride separation membrane and the resin increase the purification efficiency of drinking water, realize the resource utilization of the heavy metal in the industrial wastewater, and expand the application field of the polyvinylidene fluoride micro-filtration separation film.
Owner:YANSHAN UNIV

Combined process for building partial nitrosation-anaerobic ammonium oxidation garbage percolate

The invention discloses a combined process for building partial nitrosation-anaerobic ammonium oxidation garbage percolate. The method comprises the following steps of: normally separating and removing, filtering and settling garbage percolate, anaerobically and biochemicalally pre-processing; putting the pre-processed garbage percolate in a started and steady SBR (Sequencing Batch Reactor) reactor; controlling the temperature of the SBR reactor in a range of 25-35 DEG C; hydraulically staying for 2 to 3 days, wherein the dissolved oxygen concentration is 2 to 3 mg/L so that the mol concentration ratio of nitrosation nitrogen to ammonia nitrogen in the water is 0.8 to 1.4; flowing the water into an anaerobic reactor and carrying out the anaerobic ammonium oxidation to denitrify. The method provided by the invention controls the reaction condition of SBR reactor so that the ammonia nitrogen in the garbage percolate is partially nitrosated and then removed in the garbage percolate in the series anaerobe reactor. Compared with the traditional garbage percolate denitrifying process including nitration and denitrification, the method obviously reduces the addition of agents and the consumption of the power energy, reduces the processing cost of garbage percolate and is an energy-saving, consumption-emission and environmental-friendly processing process.
Owner:GUANGDONG INST OF MICROORGANISM +1

Preparation method and application of functionalized polyvinyl alcohol microspheres

The invention discloses a preparation method and application of functionalized polyvinyl alcohol microspheres. The preparation method comprises the following steps: uniformly mixing polyvinyl alcohol microspheres, epoxy chloropropane and a hydrochloric acid solution, carrying out a stirring reaction for 1-5 hours in a water bath, and carrying out centrifuging, water cleaning and drying for later use after the reaction; uniformly mixing the obtained chloridized polyvinyl alcohol microspheres, tetrabutylammonium bromide, ethidene diamine and a sodium hydroxide solution, carrying out the stirring reaction for 4-10 hours in the water bath, and carrying out the centrifuging, ethanol cleaning and the drying for later use after the reaction; and uniformly mixing the obtained aminated polyvinyl alcohol microspheres with 2-(2-pyridine) azo-resorcinol, formaldehyde and distilled water, stirring for 6-18 hours in the presence of nitrogen, and carrying out the centrifuging, the ethanol cleaning and the drying after the reaction, so as to obtain an end product. The functionalized polyvinyl alcohol microspheres provided by the invention can be used for chelating heavy metal and detecting and processing divalent heavy metal ions in wastewater and have the characteristics of simple preparation condition, low cost, short detection response time and high adsorption capacity.
Owner:NANJING HEHAI TECH

Chemical agent and process for treating wastewater containing thallium and heavy metals

The invention discloses a chemical agent for treating wastewater containing thallium and heavy metals. The chemical agent is mainly prepared from 1-90 percent of a component A, 1-90 percent of a component B and 1-98 percent of a component C, wherein the component A is one or combination of arbitrary two of sodium dimercaptosuccinate and derivatives thereof; the component B is one or combination of arbitrary two of hydroxames; and the component C is one or combination of arbitrary two of dialkyl dithiophosphate. The process comprises the following steps: dissolving the chemical agent in water to prepare a chemical agent aqueous solution which has a mass concentration of 2-20 percent; putting the chemical agent aqueous solution into to-be-treated wastewater containing thallium and heavy metals and/or radioactive substances, and sufficiently stirring to form metal complex; adding a little amount of inorganic flocculant containing magnesium, iron, silicon or aluminum and/or polymer flocculant to form flocculent precipitation which can be filtered and separated; and finally filtering and separating to complete wastewater treatment. The chemical agent can be used for realizing functions of deodorizing waterbody, removing organic matters, completely removing thallium and heavy metals and the like.
Owner:CHANGSHA RES INST OF MINING & METALLURGY

Method and device for removing nitrate in aquaculture seawater through heterotrophism and autotrophy series connection denitrification

The invention discloses a method and a device for removing nitrate in aquaculture seawater through heterotrophism and autotrophy series connection denitrification. The device comprises a heterotrophic organism denitrification unit, an autotrophic organism denitrification unit and an outlet water filtering unit, wherein the heterotrophic organism denitrification unit comprises a heterotrophic denitrification bioreactor; the autotrophic organism denitrification unit comprises an autotrophic denitrification bioreactor; the outlet water filtering unit comprises a solid filtering device; aquaculture seawater to be treated is sequentially introduced into the heterotrophic denitrification bioreactor, the autotrophic denitrification bioreactor and the solid filtering device, and the removal of nitrate in the aquaculture seawater can be realized. The method and the device have the advantages that on the premise of maintaining high-concentration dissolved oxygen of inlet water, the removal of nitrate in circulation aquaculture seawater is realized; the generation of nitrous acid in the outlet water is strictly controlled; the consumption of organic carbon sources and the generation quantity of sulfate radicals are reduced; the treatment cost is reduced.
Owner:RES CENT FOR ECO ENVIRONMENTAL SCI THE CHINESE ACAD OF SCI +1

Method for producing calcium carbide raw materials through carbide slag

The invention relates to the field of carbide slag recycling in calcium carbide method acetylene production, in particular to a method that after physical separation is performed on carbide slag impurities, a calcium hydroxide component in the carbide slag impurities is extracted, and then calcium carbide raw materials are produced through carbide slag. The method for producing the calcium carbide raw materials through the carbide slag mainly comprises the following steps of fresh carbide slag screening; magnetic separating; ore grinding; ore pulp preparing; suspension separating; dewatering; carbon mixing, wherein filter cakes which are obtained after dewatering is performed and contain certain moisture are mixed with carbon material particles of which the particle size is smaller than or equal to 2 mm and the fixed carbon content is larger than or equal to 70% in a mixing machine according to the mass fraction ratio of 1.63:1-2.91:1; granulating and forming; drying; calcining. According to the method for producing the calcium carbide raw materials through the carbide slag, the shortcomings and defects in the prior art can be effectively overcome, reclamation recycling of the carbide slag is achieved, the impurities in the carbide slag can be effectively removed, the technology is simple and convenient, and the economical efficiency and practicability are achieved.
Owner:丰镇市嘉鑫硅锰合金有限公司

Complete methanation reaction device for synthesis gas

The invention relates to a complete methanation reaction device for synthesis gas. The device consists of a tube-shell reactor, a heat exchanger, a steam pocket, a make-up water pump, a condenser and a gas-liquid separator, wherein a catalyst is filled in a tube of the reactor; the shell pass is superheated water for removing heat; heat released in methanation reaction is absorbed through the phase change of high-pressure superheated water in the shell pass of the reactor and taken out of the device; the generated steam enters the steam pocket, is subjected to gas-liquid balance and can directly form superheated steam to be supplied to the outside; the temperature of a catalyst bed in the tube of the reactor is regulated and controlled by controlling the balance pressure of the superheated steam; reaction product exit gas exchanges heat with raw material gas and is continuously condensed; and a gaseous product and a liquid product are separated by the gas-liquid separator. The device can realize the continuous and stable operation of the complete methanation reaction of the synthesis gas, can effectively improve heat transfer efficiency and control the temperature of the reaction bed in a phase change heat transfer mode at a high temperature and under high pressure, expands the operation range of the complete methanation reaction of the synthesis gas, and can effectively recycle the heat released in the reaction.
Owner:INST OF PROCESS ENG CHINESE ACAD OF SCI

Amino end-group triazine ring tree-shaped macromolecular adsorbent and preparation method thereof

The invention relates to an amino end-group triazine ring tree-shaped macromolecular adsorbent and a preparation method thereof. An anionic dye can be removed by fading dye wastewater. A tree-shaped macromolecule is a three-dimensional hyper-branched sequential novel macromolecule, so that the size, shape structure and functional group of the molecule can be strictly controlled and designed at molecular level, a dye molecule can be wrapped by a cavity structure in the macromolecule, and the removing purpose is achieved. The preparation method provided by the invention comprises the following steps of: dissolving cyanuric chloride in acetone; adding quadrol; stirring, reacting and then adding acid-binding agent; increasing temperature and reacting; and performing suction filtration on the product and then extracting and washing, thereby obtaining the amino end-group triazine ring tree-shaped macromolecular adsorbent. Under the influence of unsaturated bonds, the adsorbent disclosed by the invention is higher in reactivity and is easily subjected to nucleophilic substitution; the reaction selectivity is excellent; the condition is controllable and the method is conducted in steps; the adsorbent has physical and chemical adsorption for the anionic dye; and the adsorbent has the characteristics of higher relative molecular mass, so that the material usage is less and the cost is low.
Owner:SHAANXI UNIV OF SCI & TECH
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