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200results about How to "Achieve the purpose of repair" patented technology

Restoration method for damaged ecosystem in steep-slope area in water-level-fluctuating zone of reservoir

The invention relates to a restoration method for a damaged ecosystem in a steep-slope area in a water-level-fluctuating zone of a reservoir. The method comprises the following steps:when the impounded water level is at the lowest point, cleaning the upstream slope in the water-level-fluctuating zone, and manually tamping; digging planting holes at the top of the slope, and planting Chinese red pines and the like to form a multifunctional protective forest belt; digging planting grooves and planting holes within the range of the water-level-fluctuating zone, laying jute geotextile, planting vetiver within the range with the water-level-fluctuating depth of 2m to form a hedgerow; and mixedly planting vetiver and wire grass within the range with the water-level-fluctuating depth of 2-10m to form a combined vegetation slope restoration belt. The protective forest belt, the hedgerow and the combined vegetation slope restoration belt form a three-dimensional restoration space together, thereby ensuring that plants can take roots and restore in the steep-slope area in the water-level-fluctuating zone. By restoring the vegetation in large area, the invention effectively reduces the overland flow and the soil erosion, and improves the fertility and the properties of the soil, thereby restoring the damaged ecosystem. The invention has the advantages of convenient construction and less investment, can not be easily damaged by water, and is applicable to the water-level-fluctuating zone of a reservoir with large water-level-fluctuating range and precipitous topography.
Owner:HUAZHONG AGRI UNIV

Device and method for washing and electrokinetic-combined remediation of heavy metal contaminated soil

The invention discloses a device and a method for washing and electrokinetic-combined remediation of heavy metal contaminated soil. The device comprises a washing system and an electrokinetic remediation system, wherein in the washing system, a leacheate storage tank, an acid storage tank and an alkali storage tank are communicated with a contaminated soil storage trough through a first peristaltic pump, a second peristaltic pump and a third peristaltic pump respectively; a stirrer is arranged in the leacheate storage tank; in the electrokinetic remediation system, an anode chamber and a cathode chamber are arranged on two sides of an electrokinetic remediation chamber, respectively; stirring devices are arranged in the anode chamber and the cathode chamber; a cathode of a DC power supply is connected with a cathode electrode arranged in the cathode chamber, and an anode of the DC power supply is connected with an anode electrode arranged in the anode chamber; an anolyte storage tank is communicated with the anode chamber through a fourth peristaltic pump and a fifth peristaltic pump, so as to form a loop; a catholyte storage tank is communicated with the cathode chamber through a sixth peristaltic pump and a seventh peristaltic pump, so as to form a loop; the bottom of the contaminated soil storage trough in the washing system is communicated with the electrokinetic remediation chamber through a mud pump.
Owner:江苏省环境工程技术有限公司

In-situ repairing system and method for composite polluted groundwater

The invention provides an in-situ repairing system and method for composite polluted groundwater. According to the in-situ repairing system for the composite polluted groundwater, a permeable reaction wall is scientifically arranged to be of a two-section structure which comprises a first section of the system and a second section of the system, the first section of the system is filled with first section reaction materials and acid resistance anaerobes so that an acid anaerobic repairing environment can be formed by the first section of the system, and the second section of the system is filled with second section reaction materials. The second section of the system is divided into a front half part and a rear half part, the second section reaction materials of the front half part of the second section of the system are internally loaded with neutral aerobic microorganisms, and the second section reaction materials of the rear half part of the second section of the system are internally loaded with alkali-resisting aerobic microorganisms. According to the two-section type permeable reaction wall system, a pH value and DO regulating method is used for building repairing environments suitable for degrading of different pollutants in different spaces of the permeable reaction wall, so t hat the comprehensive processing effect of the repairing system is further optimized, and the purpose of repairing composite polluted groundwater is achieved.
Owner:CHINA UNIV OF GEOSCIENCES (WUHAN)

Device and technology for repairing pipeline circumferential weld defects through epoxy steel sleeve

The invention discloses a device and technology for repairing pipeline circumferential weld defects through an epoxy steel sleeve. The device comprises the composite epoxy steel sleeve, a vacuum pumpand a colloid filling device. The steel sleeve is arranged on the outer side of a to-be-repaired pipeline. Fiber cloth is wound around the outer wall of the to-be-repaired pipeline. A gap is formed between the fiber cloth and the inner wall of the steel sleeve. Sealing bodies are arranged between the inner walls of the two ends of the steel sleeve and the pipeline. Filling colloid is arranged in the gap among the steel sleeve, the to-be-repaired pipeline and the sealing bodies. A locating thread hole is formed in the steel sleeve in the radial direction. A vacuumizing opening/colloid overflowing opening and an exhausting/observing hole are formed in the top of the steel sleeve in the flowing direction of the colloid. The invention discloses a repairing technology. According to the device and the technology, the problems of tender cracking, curing bubble and cavities of filling resin of a traditional epoxy steel sleeve can effectively solved, good compatibility can be ensured between the composite epoxy steel sleeve and a steel pipe body, the circumferential load and the axial load borne by pipeline circumferential weld are shared, and axial cracking of the circumferential weld defects is restrained.
Owner:BC P INC CHINA NAT PETROLEUM CORP +1

In-situ soil remediation system and in-situ soil remediation method based on thermal desorption synergistic electrochemical enhancement

The invention provides an in-situ soil remediation system and an in-situ soil remediation method based on thermal desorption synergistic electrochemical enhancement. The system comprises a solar powersupply module, an electrochemical enhancement module, a microwave heating module, a nutrient solution spraying module and a gas phase extraction module; the solar power supply module is electricallyconnected with the electrochemical enhancement module and the microwave heating module respectively; the electrochemical enhancement module comprises an anode plate and a cathode plate which are buried in a polluted soil area; the microwave heating module comprises at least one microwave heating rod buried in the contaminated soil area and a microwave generator connected with the microwave heatingrod; the nutrient solution spraying module comprises at least one spraying pipe buried in the contaminated soil area, and the spraying pipe is externally connected with a nutrient solution storage tank; and the gas phase extraction module comprises a gas phase extraction pipe network inserted into the contaminated soil area and a vacuum pump externally connected with the gas phase extraction pipenetwork. According to the method, comprehensive and efficient remediation treatment is carried out on various pollutants in the contaminated soil, and synergistic and efficient removal of the variouspollutants is achieved.
Owner:GUANGDONG J TECH ENVIRONMENT SCI CO LTD

In-situ power-cut-free welding method for soft mother belts and aluminum bus of cathode of aluminum electrolysis cell

ActiveCN104972220ASolve technical problemsAvoid the defect that exothermic welding cannot be used directlyWelding/cutting media/materialsSoldering mediaExothermic weldingEconomic benefits
The invention relates to the electrolytic aluminum industry, in particular to an in-situ power-cut-free welding method for soft mother belts and an aluminum bus of the cathode of an aluminum electrolysis cell. The method comprises the following steps of 1 in-situ grinding, 2 in-situ fixing, 3 in-situ fusion, 4 pre-welding treatment, 5 preheating, 6 exothermic welding and 7 post-welding treatment. By means of the method, in-situ connection between the soft mother belts and the aluminum bus is directly completed through exothermic welding, the defect that the soft mother belts of a sheet type structure cannot be directly welded in a magnetic field is overcome, the economic benefits of an aluminum electrolysis enterprise are increased, and repairing of the soft mother belts for the aluminum electrolysis enterprise is realized. The operation can be completed under the condition that serial aluminum electrolysis cells are powered all the time, and the repairing purpose can be achieved on the promise of not affecting production of the serial aluminum electrolysis cells. The method is suitable for welding of the soft mother belts and the aluminum bus in various cell types, and is good in universality, easy to operate and high in welding repair efficiency.
Owner:WUHAN UNIV

Reparation method of polluted soil

The invention discloses a soil reparation method, and belongs to the field of soil reparation. The method comprises the following steps: preparing a soil reparation agent comprising the following components in percentage by weight: 30-40% of pulverized coal ash, 2%-5% of a water absorbent and the balance of urban sludge, mixing the soil reparation agent with polluted soil, standing at the temperature higher than 0 DEG C for 60-80 hours so as to enable the water content of the polluted soil of the soil reparation agent to be 30-40% and enable the pH value to be greater than 7, thereby repairing the polluted soil. Urban sludge can supply a great amount of organic substances and nutritional ingredients for the polluted soil, and the fertility of polluted soil is improved; the pulverized coal ash after absorbing water and being pulverized not only can eliminate pathogenic bacteria in urban sludge and perform innocent treatment, but also can loosen the polluted soil, and the water-holding capacity of the polluted soil can be improved. According to the invention, the urban sludge and pulverized coal ash are utilized resourcefully, not only is the pollution of urban sludge and pulverized coal ash to the environment reduced, but also the reparation cost of the polluted soil is reduced, and the win-win effect of economical benefit and social benefit is achieved.
Owner:SHANXIN KETAO TECH BEIJING

TCAM (Ternary Content Addressable Memory) diversified configuration system and configuration method on the basis of FPGA (Field Programmable Gate Array) dynamic reconstruction technology

The invention discloses a TCAM (Ternary Content Addressable Memory) diversified configuration system and configuration method on the basis of an FPGA (Field Programmable Gate Array) dynamic reconstruction technology. The TCAM diversified configuration system comprises an FPGA dynamic reconstruction unit, a dynamic reconstruction configuration unit, a control unit and a TCAM, wherein the FPGA dynamic reconstruction unit is used for carrying out dynamic reconstruction layout and generating a corresponding functional circuit so as to generate a corresponding dynamic reconstruction file after a pre-implementation function is converted to generate a corresponding dynamic reconstruction logic circuit; the dynamic reconstruction configuration unit is used for downloading and operating the dynamic reconstruction file and executing an action according to a control command of the control unit; and the control unit is used for monitoring the operation state of the TCAM communicated with the control unit in real time, sending a dynamic configuration command when the TCAM abnormally operates, and controlling the dynamic reconstruction configuration unit to reconfigure and repair the TCAM or carry out function reconfiguration to the TCAM. The FPGA dynamic reconstruction technology is utilized for reconfiguring the TCAM when the TCAM is out of order during use so as to achieve a purpose of repairing. The invention is simple in operation, and device resource use efficiency is improved.
Owner:大连梯耐德网络技术有限公司

Dresser for deep hole internal thread

The invention provides a dresser for a deep hole internal thread and belongs to the technical field of hand tools. The dresser comprises a locating mandrel, a ferrule, a threaded cutter, a fixing seat, a fixing sleeve and a baffle, wherein the locating mandrel penetrates into an inner cavity of the fixing seat, and a tapered surface is arranged at the lower end of the locating mandrel; the ferrule is embedded into the inner cavity of the fixing seat; the threaded cutter comprises four groups of L-shaped blades, a cutting edge with a thread form consistent with that of the deep hole internal thread of a to-be-dressed aircraft part is arranged at the outer side end of the horizontal arm of each blade, a wedge-shaped arc surface is arranged on the vertical arm of the blade, the four groups of blades are evenly arranged around the locating mandrel, and the horizontal arms of the four groups of blades are assembled with the fixing seat; an operating handle is arranged at the upper end of the fixing seat, the fixing seat and the fixing sleeve are assembled in a threaded fit manner, the thread pitches of the fixing sleeve, the fixing seat and the deep hole internal thread of the to-be-dressed aircraft part are identical, and the fixing sleeve and the to-be-dressed aircraft part are assembled in a threaded fit manner. The dresser solves the problem about repair of the deep hole internal thread of the aircraft part and guarantees smooth assembly of threaded fit members in the maintenance process of the aircraft.
Owner:FACTORY 5721 OF PLA

Preparation method for heterojunction photocatalyst and application

ActiveCN107008467AExcellent photocatalytic degradation activityPhotocatalytic degradation is effectiveWater/sewage treatment by irradiationWater treatment compoundsHeterojunctionSemiconductor materials
The invention belongs to the technical field of semiconductor material preparation and especially relates to a preparation method for a heterojunction photocatalyst and an application. The method comprises the following steps: weighing manganese tungstate, bismuth nitrate and potassium bromide; dissolving in a mixed solvent of glycol and deionized water; ultrasonically dissolving, thereby acquiring a precursor suspension; transferring into a hydrothermal reaction kettle; reacting in an oven; washing with water, filtering and drying, thereby acquiring a MnWO4/BiOBr heterojunction material. The MnWO4/BiOBr heterojunction photocatalyst is prepared according to a hydrothermal method and a solvent thermal method in the manner of regulating different mole ratios of added manganese tungstate to bismuth nitrate to potassium bromide; the degrading effects to the organic pollutants (rhodamine b and tetracycline) (10mg/L) under the irradiation of visible light under the condition of same catalyst dosage (50mg) are respectively observed; a photo-catalytic result shows that the MnWO4/BiOBr heterojunction photocatalyst prepared by compounding less manganese tungstate and bismuthyl bromide can obviously promote the photo-catalytic activity.
Owner:JIANGSU UNIV

Heavy metal polluted soil remediation agent, and preparation method and application thereof

The invention provides a heavy metal polluted soil remediation agent, and a preparation method and an application thereof, and relates to the field of heavy metal polluted soil remediation. Treatmentof heavy metal pollution in soil includes engineering treatment, chemical treatment and plant ecological restoration, and has the disadvantages of low remediation efficiency, high treatment cost, secondary pollution to soil, structural damage of the soil, and loss of some elements in the soil. The heavy metal polluted soil remediation agent provided to overcome the disadvantages in the prior art comprises, by mass, 25-35 parts of zeolite powder, 20-30 parts of montmorillonite powder, 35-45 parts of attapulgite, 10-15 parts of diatomite, 80-100 parts of rice hull powder, 1-8 parts of chitosan,1-10 parts of citric acid, 0.5-2 parts of zinc sulfide, 0.5-2.5 parts of selenium powder and 1-3 parts of negative ion powder. The heavy metal polluted soil remediation agent can effectively convert lead, cadmium, mercury, arsenic, chromium and other heavy metals in the soil through an ion exchange method to achieve the purpose of soil remediation, and has the advantages of easily available raw materials, low cost, and realization of factory mass production.
Owner:上海前引科技有限公司

Local resin curing construction process for reconstruction and extension of drainage pipe network

The invention discloses a local resin curing construction process for reconstruction and extension of a drainage pipe network. The process comprises the following steps of checking at the early stage;applying for occupying a road; plugging by adopting an air bag plugging method or a wall plugging method as a plugging method; guiding flow; clearing and dredging a pipeline and performing CCTV detection; pretreating the pipeline; curing and repairing local resin and performing CCTV detection, specifically, a felt cylinder is soaked with resin, the felt cylinder is wound on a air bag, the air bagreach a repairing place under the guidance of the CCTV, the air bag is inflated to enable the felt cylinder to patch to be pressed and coated on the pipeline, the pressure is kept until the resin iscured, g the air bag is released the pressure to shrink and pulled out the pipeline, finally the CCTV detection is performed, and construction quality detection is performed; and cleaning up a site. The method is simple and rapid in construction, meanwhile, shortens the construction period, increases the strength of the pipeline, achieves the purpose of repairing, can protect the environment, saves resources, does not dig a road surface, does not generate garbage, does not block traffic, and greatly improves the image of pipeline repairing construction.
Owner:CHINA RAILWAY 18TH BUREAU GRP CO LTD +1

Free disassembly type vacuum handle puller for automobile sheet metal repair

The invention discloses a free disassembly type vacuum handle puller for automobile sheet metal repair. The free disassembly type vacuum handle puller comprises a supporting base, a lead screw, a nutand a sheet metal box body. The four corners of the lower part of the supporting base are connected with universal wheels through bolts, a cabinet body is arranged on one side of the upper part of thesupporting base, and a handle is arranged on the upper part of the cabinet body. The free disassembly type vacuum handle puller has the beneficial effects that the nut is arranged to cooperate with the lead screw to provide tension for the automobile concave surface sheet metal process, it can be ensured that the tension is more stable and easy to control and can be targeted in the sheet metal process, so that the quality of sheet metal is improved; sliding cylinders and pistons are arranged, during the sheet metal, the pistons are pulled firstly to move to vacuumize vacuum suction cups, so that the absorption force of the vacuum suction cups on the automobile concave surface can be improved, and the efficiency of the sheet metal is improved; and the cabinet body is arranged, appliances needed for the sheet metal can be stored in the cabinet body, so that the subsequent taking operation is convenient.
Owner:深圳市百思泰科技有限公司
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