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46results about How to "Increase permeable area" patented technology
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Air-permeability aluminum foil and preparation method thereof
ActiveCN101628644AGood corrosionGood corrosion resistanceFlexible coversWrappersMaximum diameterCorrosion
The invention relates to an air-permeability aluminum foil and a preparation method thereof, wherein the aluminum foil is mainly suitable for air-permeability packaging in requirements of agricultural production and daily life. The aluminum foil is characterized by being made of 3003 alloy, the thickness of the aluminum foil is 0.03-0.05 mm, pinholes which can reach more than 10,000 every square meter are densely distributed on the surface of the aluminum foil, and the maximum diameter of each pinhole is not more than 0.05 mm. The preparation method comprises the following process steps: batching, smelting, cast-rolling, cold-rolling, interannealing, cold-rolling, and foil-rolling to reach the finished thickness, slitting into a finished specification, and finished annealing. The invention has the advantages of good air permeability, strong corrosion resistance and strong oxidation resistance.
Owner:新疆生产建设兵团第八师天山铝业有限公司
Large curvature radiation horizontal well drilling technique and device
InactiveCN101210481AIncrease permeable areaIncrease daily outputDirectional drillingWell drillingEconomic benefits
The invention discloses a large-curvature radioactive level horizontal drilling process and device includes drilling vertical well to oil layer, lowering the sleeve, drilling sleeve shoe, building up angle directionally, washing well, lifting the drill, lowering special sieve vessels, filling with gravels, decoupling the hanger for circulated well washing, lifting the hanger de-coupler and all drilling tools above, drilling other radial wells, etc. Through drilling a plurality of radial wells, the invention enlarges seepage area, expanding seepage range, increasing the daily production for single well and raises final recovery ratio, so as to achieve the purposes of making full use of energy, increasing economic benefits and benefiting the society.
Owner:杜晓瑞
Biological retention device for controlling rainwater non-point pollution on two sides of river channel and design method of biological retention device
PendingCN107381825AEfficient use ofAvoid pollutionSewerage structuresClimate change adaptationWater storageWater resources
The invention belongs to the technical field of water resource environment protection and discloses a biological retention device for controlling rainwater non-point pollution on two sides of river channel and a design method of the biological retention device. The biological retention device is characterized in that the rainwater sand settling wells of the device are communicated with biological retention belts through overflow ports; each biological retention belt sequentially comprises a water storage layer, a planting soil layer, a sand filtering layer, a gravel layer and an original soil layer which are laid from top to bottom; a geotextile layer is laid between each planting soil layer and the corresponding sand filtering layer, and a geotextile layer is laid between each sand filtering layer and the corresponding gravel layer; an impermeable membrane layer is laid between each gravel layer and the corresponding original soil layer; water-permeable blind pipes are inserted in the bottoms of the gravel layers and communicated with rainwater inspection wells excavated in one side of the biological retention belts. The biological retention device has the advantages that the device is simple, high in flexibility, unlimited by sites, small in size, applicable to different regions of a city, and the like; meanwhile, the device is a small ecological system and can beautify environments and relieve the heat island effect of the city.
Owner:重庆环投生态环境监测网络与工程治理有限公司
Road-dependent rainwater purification and storage ecological utilization system in northern cities
ActiveCN109183532ARealize primary savings functionGuaranteed diversionSewerage structuresPaving gutters/kerbsRetention timeSnow melting
The invention relates to the technical field of urban construction, in particular to a road-dependent rainwater purification and storage ecological utilization system in northern cities, comprising aroad central drainage green plant unit, a roadside drainage unit, a roadside surface green plant purification unit, an underground seepage storage unit and rainwater wetland gardens, wherein due to the road central drainage green plant unit, the surface water permeable area of the pavement is increased; the drainage ditch can effectively reduce the garbage blocking the pavement drainage outlet, accelerate the drainage velocity, and prevent the snow water containing snow melting agent from flowing into the green belt in winter; due to the sidewalk drain ditch, excessive rainwater on the pavement is introduced into the roadside surface green plant purification unit to increase the infiltration area and time of the rainwater; the underground seepage storage unit is set up to store rainwater for later use; due to the rainwater wetland gardens, the rainwater infiltration area and rainwater retention time can be enlarged in rainy season; and the rainwater wetland gardens and the roadside surface green plant purification unit are connected in ditches, thus greatly reducing the amount and area of road water.
Owner:于佳惠
High-hydrophilicity nanofiber coating-based nanofiltration membrane and preparation method thereof
ActiveCN111644080AImprove hydrophilicityCompact structureMembranesSemi-permeable membranesPolymer scienceNanofiber
The invention provides a high-hydrophilicity nanofiber coating-based nanofiltration membrane and a preparation method thereof. The high-hydrophilicity nanofiber coating-based nanofiltration membrane is formed by compounding a high-hydrophilicity nanofiber coating base membrane and a nanofiltration separation layer loaded on the surface of the high-hydrophilicity nanofiber coating base membrane. The preparation method comprises the following steps: firstly, carrying out wet coating on an ethylene-vinyl alcohol copolymer nanofiber dispersion liquid on a non-woven fabric base layer to prepare a nanofiber coating base film; then carrying out alkali treatment and plasma treatment, and carrying out functional modification on the base membrane to obtain the high-hydrophilicity coating base membrane; and finally, carrying out interfacial polymerization to obtain the high-hydrophilicity nanofiber coating-based nanofiltration membrane. The composite nanofiltration membrane prepared by the invention is compact in structure, has high hydrophilicity, can realize synergistic improvement of flux and retention rate, and also has an excellent filtering effect. The preparation method provided by theinvention can optimize the interfacial polymerization process, and the preparation process is simple and controllable, green and pollution-free, and low in cost, and has a great industrial application prospect.
Owner:WUHAN TEXTILE UNIV
Core body used for rapid absorption of sanitary products, manufacturing method of core body and guide groove prefabricated die wheel
InactiveCN109044632AExtension of timeIncreased suction contact surfaceAbsorbent padsBaby linensFiberEngineering
The invention discloses a core body used for rapid absorption of sanitary products. The core body includes an accelerating layer, a flow guiding layer and an absorption layer from top to bottom. The accelerating layer contains short wood pulp fibers, the absorption layer contains long plant fibers, and the area of the accelerating layer is smaller than that of the absorption layer. By arranging the accelerating layer and the flow guiding layer, an 'instantaneous absorption and slow release' buffering moisture-retention mechanism is provided for liquid before the liquid enters the absorption layer, the absorption time of the absorption layer is prolonged, the liquid absorption contact surface is increased, and the technical effects of improving the absorption performance of the absorption layer and preventing side leakage are achieved.
Owner:BEIJING BEISHUTE MATERNITY & CHILD ARTICLES
Air-permeability aluminum foil and preparation method thereof
ActiveCN101628644BImprove corrosion resistanceDecreased corrosion resistanceFlexible coversWrappersMaximum diameterAlloy
The invention relates to an air-permeability aluminum foil and a preparation method thereof, wherein the aluminum foil is mainly suitable for air-permeability packaging in requirements of agricultural production and daily life. The aluminum foil is characterized by being made of 3003 alloy, the thickness of the aluminum foil is 0.03-0.05 mm, pinholes which can reach more than 10,000 every square meter are densely distributed on the surface of the aluminum foil, and the maximum diameter of each pinhole is not more than 0.05 mm. The preparation method comprises the following process steps: batching, smelting, cast-rolling, cold-rolling, interannealing, cold-rolling, and foil-rolling to reach the finished thickness, slitting into a finished specification, and finished annealing. The invention has the advantages of good air permeability, strong corrosion resistance and strong oxidation resistance.
Owner:新疆生产建设兵团第八师天山铝业有限公司
Magnetic integrated full-bridge LLC resonant converter
ActiveCN111628656AReduce lossSmall air gap lengthEfficient power electronics conversionTransformers/inductances coils/windings/connectionsCapacitanceFull bridge
The invention discloses a magnetic integrated full-bridge LLC resonant converter. The converter is characterized by comprising a primary side direct current power supply, an input filter capacitor, aprimary side inverter bridge, a resonance and voltage conversion (comprising a magnetic integrated structure and a resonance capacitor), a secondary side rectifier bridge, an output filter capacitor and an output load, energy is provided by a primary-side direct-current power supply, enters the resonance and voltage conversion part through inversion of a primary-side inverter bridge switching tube, passes through a secondary-side rectifier bridge diode and is finally provided for a load. According to the magnetic integration structure, the resonance inductor, the excitation inductor and the transformer are integrated in one magnetic core, the whole converter only comprises one magnetic element, the size of the magnetic element is effectively reduced, and the power density of the converteris improved. High-power, small-size and high-efficiency energy transmission can be realized under frequency conversion control, phase shift control and frequency conversion and phase shift hybrid control, and the resonant converter has the advantages of wide-range voltage input, the wide gain range, high transmission efficiency, easiness in realizing soft switching and the like.
Owner:TIANJIN POLYTECHNIC UNIV
Novel composite drainage and seepage pipe with physical blockage resisting function
InactiveCN110735429AReduced risk of cloggingImprove drainage capacityDrainageSoil preservationSoil scienceStructural engineering
The invention discloses a novel composite drainage and seepage pipe with a physical blockage resisting function. The novel composite drainage and seepage pipe comprises a drainage and seepage pipe body with a cylindrical main body, a plurality of water seepage outer grooves are uniformly distributed on the periphery of the drainage and seepage pipe body in an annular array, water seepage structures communicating with the inner wall of the drainage and seepage pipe body are arranged at the bottoms of the water seepage outer grooves, geotechnical cloth is wrapped around the outer wall of the drainage and seepage pipe body and the inner walls of the water seepage outer grooves, a sand gravel filter material fills the water seepage outer grooves, and a protection layer wraps the outside of thedrainage and seepage pipe body. According to the novel composite drainage and seepage pipe, the sand gravel filter material and the geotechnical cloth are combined together for use to mutually complement superiority, wherein the sand gravel filter material is utilized to resist physical blockage, and the geotechnical cloth is utilized to block fine particles in soil, so that the risk of the physical blockage of the geotechnical cloth is reduced, and the overall water drainage capacity of the drainage and seepage pipe is improved.
Owner:HOHAI UNIV
Overexploitation area surface water-saving irrigation and low-pressure underground pipe network recharge exploitation supplement coupled system
ActiveCN110663512AAvoid cloggingIncrease moisture contentWatering devicesCultivating equipmentsWater sourceWater filter
The invention provides an overexploitation area surface water-saving irrigation and low-pressure underground pipe network recharge exploitation supplement coupled system which comprises a water source, a filter tank, an underground pipe network, a surface drip irrigation device and an underground water recharge device. The water inlet end of the filter tank is communicated with the water source through a first centrifugal pump and a first conveying pipeline, the underground pipe network comprises a plurality of underground water filter pipes which are vertically and horizontally staggered andmutually communicated, one end of each underground water filter pipe is connected with the filter tank through a water collecting pipe, the other end of each underground water filter pipe is connectedwith a settling tank, the surface drip irrigation device comprises a pivot head, a drip irrigation belt and a drip irrigation head, one end of the pivot head is connected with the water outlet end ofthe filter tank, the other end of the pivot head is connected with multi-row main pipes, multi-line branch main pipes are connected with the main pipes, the drip irrigation belt is connected with thebranch main pipes, the drip irrigation head is arranged on the drip irrigation belt, the underground water recharge device comprises an exploited well, and underground water is conveyed into the irrigation belt through a second centrifugal pump and a water conveying pipeline.
Owner:UNIV OF JINAN
Internal-and-external-inflow well head device of self-infiltration filtration recharge well
ActiveCN104110053ASolve the problem of rapid rechargeGuaranteed StrengthHydraulic engineering apparatusDrinking water installationFiltrationSilt
The invention discloses an internal-and-external-inflow well head device of a self-infiltration filtration recharge well and belongs to the technical field of water retention The internal-and-external-inflow well head device of the self-infiltration filtration recharge well comprises a well cover and a geotextile inverted filter layer, and is characterized in that the well cover is composed of an upper well cover portion and a lower well cover portion, the upper well cover portion is shaped in a hollow ring groove and is provided with water inlet orifices, the lower well cover portion which is an impermeable body is buried in the ground of a river bottom or a channel bottom, the well cover is integrally shaped in a hollow bottomless cylinder, the hollow ring groove of the upper well cover portion is provided with a groove bottom, the round water inlet orifices are formed in the outer side of the upper well cover portion, the inner side of the hollow ring groove and the groove bottom, and the geotextile inverted filter layer is arranged on the outer side of the well cover and is identical to the outer side of the well cover and the hollow ring groove in shape. The internal-and-external-inflow well head device of the self-infiltration filtration recharge well has the advantages that on the premise that the outline dimension of the well head device is not changed, flow capacity and silt controlling and anti-impact capabilities of a recharge pool are improved remarkably, and the service life of the recharge pool is prolonged.
Owner:UNIV OF JINAN
Novel high-flux filtering device and using method thereof
PendingCN110841482AImprove permeabilityIncrease permeable areaSemi-permeable membranesHigh fluxEngineering
The invention discloses a novel high-flux filtering device and a using method thereof. The novel high-flux filtering device comprises a membrane element, the membrane element comprises a cylindrical support body, a columnar inner cavity channel is formed in the center of the supporting body in the axial direction, a supporting layer is formed between the inner cavity channel and the outer layer ofthe supporting body, an inner membrane layer is arranged on the inner wall of the supporting layer, an outer membrane layer is arranged on the outer wall of the supporting layer, and two or more layers of raw material liquid filtering channels distributed in an asymmetric structure are arranged in the supporting layer in the axial direction. By increasing the inner cavity channels of the membraneelement, the permeation area of the membrane element is increased, the ratio of the circulating flow to the seepage amount of the permeable membrane is reduced, and the permeation performance of theceramic membrane element is remarkably improved. According to the quality condition of water needing to be purified, the optimal permeability is achieved and the permeability is improved through the adjustment of the filtering precision of the inner membrane layer and the outer membrane layer and the reasonable configuration of the size of a raw material liquid filtering channel.
Owner:HENAN LVDIAN ENERGY SAVING & ENVIRONMENTAL PROTECTION TECH
High-permeability anti-fouling nanofiber separation membrane material and preparation method and application thereof
ActiveCN113144913AExtended service lifeIncrease permeable areaMembranesSemi-permeable membranesPhysical chemistryNanofiber
The invention provides a high-permeability anti-fouling nanofiber separation membrane material and a preparation method and application thereof. According to the preparation method, a woven fabric with periodic textures on the surface serves as a base material, a hydrophilic polymer nanofiber coating is loaded on the surface of the woven fabric through a wet non-woven technology, meanwhile the woven fabric and the polymer nanofiber coating are tightly attached through a chemical cross-linking agent, and the high-permeability anti-fouling nanofiber separation membrane material is obtained. Through the mode, the prepared separation membrane material has a small-aperture compact structure and a surface texture structure at the same time, and the permeability and the pollution resistance of the membrane material are synergistically improved. The preparation method of the separation membrane material is simple, convenient and easy to implement, the controllability is high, the preparation efficiency can be improved, large-scale preparation is easy, and the prepared separation membrane material can be applied to the field of ultrafiltration and microfiltration of tangential flow liquid and has high practical application value.
Owner:WUHAN TEXTILE UNIV
Thin film support substrate for use in hydrogen production filter and production method of hydrogen production filter
InactiveCN101337166AIncreased durabilityImprove penetration efficiencySemi-permeable membranesHydrogen separation using solid contactElectrolysisEngineering
Owner:DAI NIPPON PRINTING CO LTD
Steel slag pavement structure and construction method thereof
ActiveCN112458825AGuaranteed permeabilityGood water permeabilityPaving reinforcementsIn situ pavingsWater seepageStructural engineering
The invention relates to a steel slag pavement structure and a construction method thereof, and relates to the field of road engineering. The steel slag pavement structure comprises a surface layer, abase layer, a cushion layer and a siphon connecting layer which are sequentially arranged from top to bottom, the bottom surface of the surface layer is provided with a first inclined part, and the top surface of the base layer is provided with a second inclined part corresponding to the first inclined part; the inclined plane of the first inclined part and the inclined plane of the second inclined part are arranged oppositely in the inclined direction; the first inclined part and the second inclined part are provided with water guide parts convenient for water seepage; and a reinforcing partfor stabilizing the base layer is arranged between the cushion layer and the base layer. The effect of improving the water seepage effect is achieved, and convenience is provided for solving the waterlogging problem.
Owner:江苏永联精筑建设集团有限公司
Core-tube-free efficient engine oil filter
InactiveCN106968756AIncrease permeable areaGuaranteed stabilityPressure lubricationLubricant mounting/connectionPulp and paper industryFilter paper
The invention discloses a core-tube-free efficient engine oil filter. The core-tube-free efficient engine oil filter comprises a filter body with an oil inlet and an oil outlet. The filter body comprises an outer shell and a filter element. The filter element comprises corrugated filter paper, an upper end plate and a lower end plate. The corrugated filter paper is provided with corrugated grooves and comprises a framework layer and filter paper layers. The framework layer comprises multiple metal wire bodies, wherein the multiple metal wire bodies are sequentially and vertically arranged at the fold positions of the corrugated grooves, and the two ends of each metal wire body are higher than the end portions of the inner filter paper layer and the outer filter paper layer. The corrugated filter paper is connected end to end so that cavities can be formed in the inner sides of the corrugated filter paper. The upper end plate is located at the top end of the corrugated filter paper and is fixed to the corrugated filter paper and the outer shell, and the lower end plate is located at the bottom end of the corrugated filter paper and is fixed to the corrugated filter paper and the outer shell. The upper end plate and the lower end plate are provided with avoiding grooves for the wire bodies to be inserted. The overall structure of the core-tube-free efficient engine oil filter is simplified, and the filtering efficiency of the core-tube-free efficient engine oil filter can be effectively increased.
Owner:NANJING SOUTHEAST BUILD ELECTROMECHANICAL SEISMIC RES INST
An ecological utilization system for rainwater purification, regulation and storage in northern cities attached to roads
ActiveCN109183532BRealize primary savings functionGuaranteed diversionSewerage structuresPaving gutters/kerbsWater storageEnvironmental resource management
The invention relates to the technical field of urban construction, in particular to an ecological utilization system for purifying, regulating and storing rainwater in northern cities attached to roads. Including road central drainage green plant unit, roadside drainage unit, roadside surface green plant purification unit, underground seepage storage unit and rainwater wetland garden. The drainage and green planting unit in the center of the road in the present invention increases the water permeable area of the road surface; the drainage ditch can effectively reduce the situation of garbage blocking the road drainage outlet, accelerate the drainage flow rate, and prevent snow water containing deicing agent from flowing into the green belt in winter; the sidewalk drainage ditch The installation is to introduce excessive rainwater on the road surface into the green plant purification unit on the roadside to increase the area and time of rainwater infiltration; the installation of underground water seepage storage unit realizes the storage of rainwater for later use; the rainwater wetland garden realizes the increase in rainy season Large rainwater infiltration area and rainwater retention time; the rainwater wetland gardens and roadside surface green plant purification units are connected in a ditch shape, which greatly reduces the amount and area of road water accumulation.
Owner:于佳惠
A ditch anti-clogging refill filter device
InactiveCN109183720BIncrease supplyDoes not affect water flowArtificial water canalsFiltration circuitsWater storageWater flow
Owner:UNIV OF JINAN
Thin film supporting substrate used in filter for hydrogen production and method for manufacturing filter for hydrogen production
InactiveCN1817420AIncreased durabilityGood heat resistanceSemi-permeable membranesHydrogen separation using solid contactCopper platingEtching
In a through hole closing process, a metal plate is attached to one surface of a conductive base member having a plurality of through holes by the use of a magnet, in a copper plating process, a copper plating layer is formed on the conductive base member and the metal plate exposed within the through holes, from the side of the conductive base member where the metal plate is not attached, thereby to fill up the through holes, in a film forming process, a Pd alloy film is formed by plating on the surface of the conductive base member after removal of the metal plate, and in a removal process, the copper plating layer is removed by selective etching, thereby to produce a hydrogen production filter that is used in a reformer of a fuel cell so as to be capable of stably producing high purity hydrogen gas.
Owner:DAI NIPPON PRINTING CO LTD
Water quality microbiological detection device and detection method
PendingCN107782708ARealize online real-time automatic detectionConcentration effectFluorescence/phosphorescenceGeneral water supply conservationMicroorganismWater quality
The invention relates to a water quality microbiological detection device used for microbiological detection in a water sample. The water quality microbiological detection device comprises a detectorbody, a detection unit and a heating unit, wherein a detection cavity is arranged in the detector body; the detector body is provided with a first communicating hole and a second communicating hole; the first communicating hole is located at the top of the detector body, so as to fill liquid in the detection cavity by virtue of the second communicating hole, and gas in the detection cavity can beemptied by virtue of the first communicating hole and can overflow from the first communicating hole; and a filter element is arranged in the detection cavity, and the filter element is connected withthe second communicating hole, so as to stop microorganisms from being discharged from the second communicating hole. The first communicating hole is formed in the top of the detector body, and the air can be evacuated, so that the detection cavity can be full of the filled liquid, the liquid flows out, produces negative pressure and sucks in the water sample, the two communicating holes in the detector body can be conveniently and directly connected with a pipeline, and online real-time automatic detection on the microorganisms is realized.
Owner:QINGDAO JIAMING MEASUREMENT & CONTROL TECH
Firm ground water permeability reconstructing device
Owner:GUILIN UNIV OF ELECTRONIC TECH
Oilfield underground high-pressure fluid-driven spinning horizontal perforating device and application thereof
InactiveCN101886520BAchieve motion transferGuaranteed Directional DrillingUnderwater drillingBorehole/well accessoriesEngineeringHigh pressure
The invention relates to an oilfield underground high-pressure fluid-driven spinning horizontal perforating device and application thereof. The oilfield underground high-pressure fluid-driven spinning horizontal perforating device comprises a ground high-pressure fluid system and a drilling perforating mechanism, wherein the drilling perforating mechanism is arranged in a high-pressure cavity in a well; the ground high-pressure fluid system is communicated with the high-pressure cavity; the drilling perforating mechanism consists of a propelling feed mechanism and a high-pressure jet flow spinning spray-head; the high-pressure jet flow spinning spray-head is arranged in a horizontal guide hole of a guide device; drive guide blocks of the propelling feed mechanism are arranged in parallel in a vertical guide groove of the guide device; the middle part of the drive guide block is provided with a horizontal through hole; and when submerged into the horizontal guide hole, the drive guide blocks are connected with the high-pressure jet flow spinning spray-head to propel the high-pressure jet flow spinning spray-head to move along the horizontal guide hole. The oilfield underground high-pressure fluid-driven spinning horizontal perforating device and the application thereof can ensure the directed perforation of the high-pressure jet flow spinning spray-head to perforate straight horizontal well holes, and simultaneously make longer the perforated horizontal well holes so as to increase infiltrating areas and recovery ratio.
Owner:龚智勇
Efficient dialysis device for blood purification
PendingCN114209907AReduce riskImprove permeabilityOther blood circulation devicesDialysis systemsHematological testIntensive care medicine
The invention provides an efficient dialysis device for blood purification, which comprises a support, a manipulator and a sleeve, one side of the support is provided with an inlet cylinder, one side of the inlet cylinder is provided with an outlet cylinder, the outlet cylinder is communicated with the top of one side of the sleeve through a connecting pipe, the bottom of the other side of the inlet cylinder is provided with a water pump through a bolt, and the bottom of the other side of the inlet cylinder is provided with a water pump through a bolt. The other side of the top of the sleeve is provided with a supporting sleeve, the top of the supporting sleeve is provided with an air pump through a spring bolt, and the other side of the supporting sleeve is provided with a clamping sleeve. According to the efficient dialysis device for blood purification, the efficiency that toxins and waste permeate into dialysate can be improved, and then the dialysis time can be effectively shortened; therefore, risks caused by dialysis work are reduced, poor infection is prevented, blood infection is prevented, safety of personnel is guaranteed, it can be effectively guaranteed that blood in the equipment completely flows back into the body of the personnel, blood loss is avoided, hematopoietic burden of the personnel is reduced, and the device is suitable for purifying toxins in the blood of the human body.
Owner:甘肃省第三人民医院
Treatment system for groundwater pollution and treatment method of groundwater pollution
PendingCN107827273AIncrease permeable areaQuick collectionTreatment involving filtrationMultistage water/sewage treatmentSteel tubeCast iron
The invention discloses a treatment system for groundwater pollution and a treatment method of the groundwater pollution. The treatment system comprises a deep reservoir, wherein the deep reservoir isexcavated in a groundwater polluted area; multiple adits communicated with the deep reservoir are formed in a side slope of the deep reservoir; linings for the adits are steel tubes or nodular cast iron tubes; multiple water drainage holes are formed in the linings in a distribution manner; the tail ends of the water drainage holes are provided with water drainage perforated tubes; the water drainage perforated tubes are located on the outer sides of the linings, and are welded with the linings; water inlets of the water drainage perforated tubes are externally wrapped by non-woven fabric inverted filters. After polluted groundwater is converged in the deep reservoir, according to the pollution type and level of the groundwater, targeted chemical agent and a dosage are selected; the chemical agent is poured into the deep reservoir; the purification treatment is carried out on the deep reservoir; treated water is pumped out from the deep reservoir, and is used for irrigation or other purposes. By using the treatment system, the infiltrating area of the groundwater is increased; the groundwater is convenient to quickly converge and quick to treat. The range of treating the groundwater is wide; the construction difficulty is low, and the treatment system has the characteristics of being highly efficient and economical for treating the groundwater pollution.
Owner:POWERCHINA BEIJING ENG
Highly hydrophilic nanofiber coating-based nanofiltration membrane and preparation method thereof
ActiveCN111644080BImprove hydrophilicityCompact structureMembranesSemi-permeable membranesNanofiberMembrane surface
The invention provides a highly hydrophilic nanofiber coating-based nanofiltration membrane and a preparation method thereof. The highly hydrophilic nanofiber coating-based nanofiltration membrane is composed of a highly hydrophilic nanofiber coating base membrane and a nanofiltration separation layer loaded on the surface of the highly hydrophilic nanofiber coating base membrane. The preparation method is as follows: first wet-coat the ethylene-vinyl alcohol copolymer nanofiber dispersion on the base layer of the non-woven fabric to form a nanofiber coating base film; then undergo alkali treatment and plasma treatment to perform the function of the base film Modification to obtain a highly hydrophilic coating base membrane; finally, a highly hydrophilic nanofiber coating base nanofiltration membrane is obtained through interfacial polymerization. The composite nanofiltration membrane prepared by the invention has a dense structure and high hydrophilicity, can realize synergistic improvement of flux and rejection rate, and has excellent filtration effect. The preparation method of the invention can optimize the interfacial polymerization process, and the preparation process is simple and controllable, green and pollution-free, low in cost, and has great industrial application prospects.
Owner:WUHAN TEXTILE UNIV
High permeability and antifouling nanofiber separation membrane material, preparation method and application thereof
ActiveCN113144913BExtended service lifeIncrease permeable areaMembranesSemi-permeable membranesPolymer scienceNanofiber
The invention provides a high-permeability anti-fouling nanofiber separation membrane material and a preparation method and application thereof. The preparation method uses a woven fabric with periodic texture on the surface as a base material, uses a wet non-woven technology to load a hydrophilic polymer nanofiber coating on the surface of the woven fabric, and uses a chemical cross-linking agent to make the woven fabric The fabric is closely attached to the polymer nanofiber coating to obtain a high permeability and antifouling nanofiber separation membrane material. Through the above method, the present invention enables the prepared separation membrane material to have a small pore size dense structure and a surface texture structure at the same time, so as to achieve synergistic improvement of the permeability and antifouling properties of the membrane material. In addition, the preparation method of the separation membrane material is simple and easy to operate, has strong controllability, can improve the preparation efficiency, and is easy to prepare on a large scale. High practical application value.
Owner:WUHAN TEXTILE UNIV
Photovoltaic fertilization device for micro-moist irrigation
ActiveCN105144955BFast dissolutionSolve the problem of low supply efficiencyBatteries circuit arrangementsPhotovoltaicsEngineeringStraight segment
The invention belongs to the field of a saline land moistube-irrigation apparatus technology, and relates to a photovoltaic fertilizing apparatus for moistube-irrigation. A tank and a filter barrel have openings at the tops, the filter barrel comprises two semicircular shaped barrels which are buckled together, a first gap is remained between two buckled surfaces of the filter barrel along the direction of the cross section, the first gap comprises an annular segment positioned in the middle part and two straight segments which are positioned at two sides of the annular segment and are communicated with the annular segment, a barrel wall of the filter barrel is provided with micropores, a second gap is remained between the barrel wall of the filter barrel and a sidewall of the tank, an electrothermal chassis is arranged at the bottom of the tank, the top of the tank is buckled with a charging cover, and the top of the charging cover is buckled with an outer cover; the sidewall of the tank is connected with an inlet pipe and an outlet pipe, the inlet pipe and the outlet pipe are respectively connected with a main pipe, the main pipe is connected with a branch pipe and a micro moistening pipe, so that the tank and the micro moistening pipe network are connected in parallel, a photovoltaic power generation system for supply supplying power for the electrothermal chassis is also provided; by means of solar energy generation, the photovoltaic fertilizing apparatus realizes integrated supply of water and fertilizer, and effectively solves the problems of slow fertilizer dissolving speed and low fertilizer supply efficiency.
Owner:WEIFANG YOURONG IND
Corrugated cavity type soil infiltration system
PendingCN111908738AIncrease permeable areaIncrease throughputBiological treatment apparatusTreatment involving filtrationSoil scienceStream flow
The invention discloses a corrugated cavity type soil infiltration system, and the system comprises a septic tank, a water distribution system, an infiltration system and a soil infiltration system, sewage enters the water distribution system after being pretreated by a septic tank, enters the infiltration system from the water distribution system and infiltrates into the soil infiltration systemfor infiltration, the infiltration system is composed of a plurality of connected infiltration cavities, the sewage enters the infiltration cavities sequentially through water inlets of the infiltration cavities, and the infiltration cavities are communicated with the water distribution system; the percolation cavity enters surrounding soil after percolation, the inner wall of the cavity wall of the percolation cavity is a corrugated inner wall, and a plurality of shutter type percolation holes are formed in the cavity wall of the percolation cavity. According to the invention, the infiltration cavity adopts the corrugated cavity, so the infiltration area and the sewage infiltration flow of the cavity are increased, and the sewage treatment capacity is improved; the shutter type infiltration holes are formed in the side wall, the soil is prevented from entering the cavity, gravel filter materials do not need to fill the periphery of the cavity, and engineering investment is saved.
Owner:AGRO ENVIRONMENTAL PROTECTION INST OF MIN OF AGRI
Wellhead device for internal and external water inflow self-seepage reverse filtration recharge well
ActiveCN104110053BPrevent refillExtended service lifeHydraulic engineering apparatusDrinking water installationFiltrationEngineering
Owner:UNIV OF JINAN
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InactiveCN101318109AIncreased durabilityImprove penetration efficiencySemi-permeable membranesHydrogen separation using solid contactCopper platingEtching
Owner:DAI NIPPON PRINTING CO LTD
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