115results about How to "Improve retention efficiency" patented technology

The present invention provides a nonwoven fabric for cylindrical bag filter, wherein a long-fiber nonwoven fabric made of a synthetic fiber is used and the long-fiber nonwoven fabric is a long-fiber nonwoven fabric which is made of a thermoplastic continuous filament and is partially thermocompression-bonded. It is preferable that the circular arc flexural rigidity per basis weight is 0.050 to 1.000 ((cN / 2 cm) / (g / m2)) and the air permeation rate per basis weight is 0.010 to 0.500 ((cc / cm2 / sec) / (g / m2)). Further, there is provided a method for producing a nonwoven fabric for cylindrical bag filter including the steps of: melt-extruding a thermoplastic polymer through a spinneret; sucking and drawing the extrudate with an air sucker to form a thermoplastic continuous filament; allowing the filament to be subjected to electrification opening and to be piled on a moving collection surface to form a fiber web; and allowing the fiber web to be subjected to pressure welding treatment with a flat roll and partially thermocompression-bonding the fiber web with hot embossing rolls to form a long-fiber nonwoven fabric.

A method for retaining a treatment chemical in a subterranean formation containing hydrocarbons is disclosed. The method includes first preparing an emulsion. The emulsion contains an oil continuous phase and first and second aqueous phases. The first aqueous phase includes a treatment chemical, such as a scale inhibitor. The second aqueous phase comprises a retention enhancing chemical which is to be reacted with the treatment chemical in the subterranean formation. Preferably, the first and second aqueous phases remain generally separately dispersed and stable within the oil continuous phase prior to being introduced into the subterranean formation. The emulsion is then placed down a well bore and into the subterranean formation. The first and second aqueous phases then interact with one another in the subterranean formation such that the treatment chemical and the retention enhancing chemical react with one another resulting in the treatment chemical being retained in the subterranean formation at a greater efficiency than had the second aqueous phase, including the retention enhancing chemical, not been used.

Provided is a porous multilayer filter which can trap ultrafme particles and in which permeability is high and treatment can be performed at a high flow rate. A porous multilayer filter is characterized by including a support layer 2 composed of a porous expanded PTFE sheet, and a filtration layer 3 composed of a porous expanded PTFE sheet which is different from that of the support layer 2, wherein at least a liquid-to-be-treated inflow surface of the filtration layer 3 is subjected to hydrophilization treatment, the filtration layer 3 and the support layer 2 are fusion-bonded to each other at a boundary therebetween to form a multilayer structure, pores of the support layer 2 three-dimensionally communicate with pores of the filtration layer 3, and pores surrounded by a fibril skeleton of the filtration layer 3 are smaller than pores of the support layer 2.

The invention relates to an advertisement visitor retrieving method and an advertisement putting system. The method comprises the steps that tagging processing is performed on user behaviors, and a crowd tag database is established; a big data analysis method is used, the attributes of users and the user behavior tags are analyzed by using the hadoop big data cluster analysis technology of the DASP data master, advertisement visitors are retrieved, an advertiser database is established and the target users are accurately located; and the advertisement putting system is applied to put appropriate advertisements to the user terminals. The big data mining technology is combined to advertisement accurate putting, and the conventional problem that the advertisement putting users cannot be retrieved can be solved by using the modern internet advertisement technology. A virtual crowd base is established through tagging, the internet characteristics of the users are analyzed, and secondary marketing of the previous visitors is performed. The visitors are classified in a detailed way, the reasons of loss of the users are analyzed through combination of the data and the retaining efficiency of the users can be enhanced.

The invention provides an efficient composite hydrolysis acidification pool having both waste water treatment and sludge reduction function, which belongs to an environmental protection device technology field and relates to improvement of the process and device for waste water treatment.Large energy consumption and high operation cost have handicapped the construction and operation of sewage plants in our country for a long time.The sludge is a byproduct of waste water treatment. The sludge disposal charge takes one third of the operation cost in the sewage plant, and the solid waste secondary pollutant is caused at the same time.In order to solve the problem, the invention provides an efficient hydrolysis acidification technique for the sludge reducing and the synchronous processing of waste water and solid pollutants. Due to the invention, a primary sedimentation pond is replaced, interception efficiency of suspended substance is strengthened, returning excess sludge is hydrolysis liquefied; meanwhile, the reduction processing of solid waste and sludge is achieved.The invention also increases turbulent flow and mass transfer by the arrangement of folding and wing panel in the pool to strengthen the removal rate of hydrolysis acidification pool on dissolved organic pollutants.

The invention discloses a preparation method for double action filtering material capable of dedusting and decomposing dioxin. The material comprises the following five-layer structure: a first layer is a dust receiving layer formed by polytetrafluoroethylene fibers through carding process; a second layer is a buffer layer formed by fine denier polytetrafluoroethylene fiber through preneedling processing; a polytetrafluoroethylene film carrying a catalyst is processed into reticular structure fibers by a film splitting method, and a plurality of films are laminated to form a catalysis layer which is a third layer; a fourth layer is a Teflon base cloth reinforced layer; and the four layers are laminated, then the dust receiving layer is laminated on the base cloth reinforced layer, and finally the material is formed through needling processing. The material can be widely applied to the dedusting and dioxin decomposition of high temperature off gas. Compared with the prior art, the preparation method has the advantages of simple and feasible process, low processing cost, and lower requirements on the equipment; and simultaneously the preparation method removes the defects of great fiber loss and a great drag force for the filtering material.

Methods and systems for identifying an aerosolized agent. A method for identifying an aerosolized agent includes the steps of providing a sample potentially containing an aerosolized agent, concentrating the sample with an aerosol collector, analyzing the concentrated sample on a collection substrate using spectroscopy to produce an aerosolized agent analysis output, comparing the analysis output to a database of known agent analysis outputs; identifying the aerosolized agent based on the comparison; and alerting a user to the presence of an aerosolized agent in the sample.

The invention discloses a preparation method for a decellularized periosteal matrix gel material sourced from natural tissue. By conducting freeze drying on decellularized periosteal matrix sourced from mammal, bioactive molecules are kept to the maximum degree; the decellularized periosteal matrix gel material sourced from natural tissue is ground into powder, the grain size of the powder is controlled, the contact area of a solution is increased, in this way, digestion is promoted, and finally the standard and uniform decellularized periosteal matrix gel having a good osteogenic activity potential is obtained. In addition, EDC crosslinking growth factors have a good promoting effect when regenerated bone tissue is regenerated excellently and grows into with vascularization. The decellularized periosteal matrix gel material can be used for repairing bone defects, bone disunion and other kinds of bone regeneration obstacles caused by all kinds of clinical pathogeneses.

A clarifier is provided with an improved inlet structure which receives influent from influent column ports and discharges the influent uniformly around the entire circumference of the inlet structure. The influent column ports may be baffled. Angled guide vanes on the inlet structure reduce the flow energy and effect a tangential flow into a feedwell in the basin. The feedwell may be conical to further reduce the velocities and create an outward flow to counteract inward flows in the basin.

The invention application presents a fast, efficient, reproductive alternative of a non-invasive method for diagnosing the severity of heart failure based on a specific biomarker. An additional object of the present invention is a collector device for the biomarker from exhaled breath that is portable, simple, low cost and does not need to run on electric power. This invention advantageously permits the replacement of invasive diagnosis methods, favoring the patient's comfort in addition to the agility and speed of medical attention at hospitals, and may become a standard method for all suspected cases of circulatory disease and heart failure and, more specifically, decompensated heart failure.

The invention relates to a culture facility for the mixed culture of fishes and sea cucumbers and use method thereof, in particular a structural improvement on the current cages for the mixed culture of fishes and sea cucumbers. The culture facility comprises an anchor rope, a case body, a floater, a cover net, a shield and a sinker. The use method is characterized by using a compact net to manufacture a net case body, adding the shield into the net case to increase three-dimensional space of the system and provide habitat for the sea cucumbers, wherein off-bottom culture of the sea cucumbers can be realized by using the facility, and deposits generated during fish culture can be effectively utilized. The facility has a simple structure and a convenient manufacture process, and is capable of culturing sea fishes while polyculturing the sea cucumbers with higher economic value; therefore, the facility expands the current breeding space, effectively reduces the environment pollution problem caused by culturing sea fishes and increases the economic returns of the system.

The invention discloses a manufacturing method of a nucleopore filtration film to optimize flow passages in the technology field of liquid filtration. The manufacturing method is that a heavy ion accelerator or a reactor is used to radiate an insulation film and radiation damage is formed inside the insulation material; a solvent type release layer is coated on the insulation film; an alkalifast adhesive film is compounded on the surface of the release layer at low temperature to form a composite film; subsequently, under the optimized etching condition, the composite film is etched on one side under the protection of the adhesive film, thus forming non-biconical micropores; the release layer is stripped off at ordinary temperature; the microporous film is washed in de-ionized water before the composite film is dried. The microporous film made by using the method can have the thickness more than 10 micrometers, the opening rate on the upper surface of the film less than 1 percent and the porosity on the lower surface more than 10 percent. When the microporous film is used for liquid filtration, the flow resistance is small, the flow is large, granules are unlikely to be absorbed and cause dead end filtration. The method provided by the invention is applicable for producing films in batch; the process is well-developed; product quality is controlled easily and the cost is low.

The invention relates to a hard carbon material as well as a preparation method and application thereof. A conductive additive is introduced into the hard carbon material precursor to improve the conductivity of an obtained material, and a large number of oxygen-containing functional groups are introduced in combination with variable-speed heating pre-oxidation, so that the crosslinking degree ofa material skeleton is increased, the strength of the material is improved, and the sodium storage specific capacity, the first-circle coulombic efficiency and the rate capability are remarkably improved. The hard carbon material has the advantages of high reversible capacity, high first-circle coulombic efficiency, good cycling stability and the like when being used for the sodium ion battery. The material has the characteristics of simple preparation method and cheap and easily available raw materials, and provides more choices for the negative electrode of the sodium-ion battery.

The invention discloses a sea cucumber culturing facility and a culturing method applicable to a marine net cage culture area. The culturing facility comprises a traction rope, a culturing cage, an internal lining dense net and a heavy object, wherein the culturing cage is hung at the bottom of a net cage through the traction rope; the bottom of the body of the culturing cage is provided with the internal lining dense net; and the heavy object is hung at the bottom of the culturing cage. Through the facility and the method, the sea cucumber can be cultured by means of the space of the marine net cage culture area, so that sediments at the net cage area are effectively treated and extra economic benefit is gained, and a good environment condition is provided for the growth of the sea cucumber while the sediments of the net cage area are effectively intercepted and treated.

The invention relates to a preparation method and an application of a polymer-metal composite separation membrane. The method comprises the following steps: coating a polyvinylidene fluoride microfiltration membrane with dopamine to endow the membrane with the capacity of adsorbing silver ions; then, immersing the membrane adsorbing the silver ions into a reducing solution containing nickel sulfate, and compounding nickel on a polymer separation membrane through reaction to prepare the polymer-metal composite separation membrane. The obtained polymer-metal composite separation membrane realizes sensitivity of Congo red interception rate to an electric field and also has interception stability, and is suitable for selective separation as interception efficiency increases with the enhancement of the electric field, and the separation characteristic of the membrane can be conveniently controlled by changing intensity of the environmental electric field. The method is simple to operate andlow in cost, facilitates industrial application and has great significance in application to printing and dyeing wastewater.

The invention belongs to the technical field of aviation and in particular relates to load calculation of stationed mooring of airplane bodies and landing gears on a motion platform deck. An airplane mooring load calculating method is characterized by providing a non-linear GAP unit FEM calculation analyzing method which is high in universality and based on MSC. PATRAN / NASTRAN environment. External load (wind load and mass inertia force) is applied according to a full airplane mooring balance equation; the mooring load calculation situation is comprehensively and meticulously divided, so that the purpose of automatically screening and judging bearing mooring cables and the maximum mooring load is achieved on the premise of without changing the airplane and a motion platform deck model, and the work efficiency and the solving accuracy are improved.

The invention relates to a mechanism for classifying inhalable particles and measuring concentration as well as a detection method of the mechanism. One end of a fine particle collecting probe is sequentially communicated with one end of a heat insulating drying chamber, one end of an aerosol neutralizer and one end of a corona discharger; the other end of the corona discharger is divided into two paths, wherein one path is sequentially communicated with a low-voltage cascade-stage striker and a multi-channel electrometer, and the other path is sequentially communicated with a high-voltage electrode electric field and an air purifier. The mechanism disclosed by the invention is small in size, rapid in response, capable of being used for all-weather detection and playing of PM values, designed according to a standard data interface and compatible to various external equipment; the collected sample fine particle gas has collision with free electrons to form electron avalanche; the particles are classified into a plurality of grades according to the inertia of the particles and pneumatic particle sizes; current value generated by deposition of charged fine particles in various particle sizes is measured by the multi-channel electrometer; the concentration of the particles is reflected according to the current value of each particle size, and measurement results are shown in various forms, thus ancillary support and mass reliable data are provided for environmental monitoring and treatment.

The invention discloses one filteration- deposition combined perfusion system used for animal cell perfusion culture. It comprises filtering- deposition- perfusion column, peristaltic pump, automatic controller, tri- way pipeline and pipe clamp; filtering- deposition- perfusion column is connected with peristaltic pump through tri- way pipeline, the rotation of peristaltic pump is controlled by automatic controller, pipe clamp is installed on pipe between filtering- deposition- perfusion column and peristaltic pump. The invention is characterized by simple structure, low cost, high collecting efficiency, long life length and wide application on micro- carrier or cluster animal cell perfusion culture.

The invention discloses a compound PTFE / PAN (polytetrafluoroethylene / polyacrylonitrile) hydrophilic and oleophobic film and a preparation method thereof, belonging to the technical fields of film material preparation and modification. A casting film solution is prepared from the following substances in percentage by mass: 10 to 15 percent of high-molecular polymer, 10 to 25 percent of inorganic nano particle, 0 to 20 percent of additive and 70 to 90 percent of solvent. The thickness of the PTFE / PAN-SiNPs hydrophobic / oleophobic complex film is 0.4 to 0.6mm, the porosity is 30 to 50 percent, thepore size of the film is 0.1 to 1mu m, the water contact angle is less than 40 degrees, and the underwater oil contact angle is greater than 150 degrees. After alkaline leaching and modifying, the film thickness is 0.2 to 0.4mm, the porosity is 20 to 50 percent, the pore size of the film is 0.1 to 1mu m, the water contact angle is less than 20 degrees, and the underwater oil contact angle is greater than 160 degrees. According to the compound PTFE / PAN hydrophilic and oleophobic film and the preparation method thereof, the film forming technology is simple, the operation is convenient, and theindustrial production can be easily realized; the complex film has good antipollution performance, high chemical stability, good mechanical property, high interception efficiency and wide applicationprospect.

The embodiment of the invention provides a database transaction keeping method and system, equipment, a program and a storage medium. When a database instance is abnormal, if an unsubmitted transaction exists, a proxy server can assist the database instance in recovering the unsubmitted transaction after the database instance finishes the abnormal state, and roll back data of the unsubmitted transaction to a data version corresponding to a specified rollback node. After the transaction is recovered and the data is fallback, the proxy server can send a database statement after the fallback node, and the database server can execute the database statement after the fallback node in a correct state. Furthermore, after the database ends the abnormal state, the maintenance of the unsubmitted transaction can be realized under the condition that a user does not perceive, the dependency of the transaction maintenance on a client is reduced, the data of the transaction can be accurately returned to a certain version based on the rollback node, the time cost and the resources cost required for recovering the transaction are reduced. And the transaction maintenance efficiency is improved.

The invention relates to the field of rainwater filtration, and discloses a rainwater split-flow sewage interception well. The upper part side wall of a well tube is connected with a rainwater inlet pipe and a split-flow pipe; the rainwater inlet pipe and the split-flow pipe have the same elevation; the lower part side wall of the well tube is connected with a water distribution pipe; a split-flow unit is arranged in the well tube; the bottom surface and the periphery of a sewage interception basket are defined by an interception net; a main longitudinal beam is symmetrically arranged at the side wall of the sewage interception basket; the side walls of the two sides of the connecting surface of the main longitudinal beam have the height differences; a first upper ring beam is arranged on the top of the high-position side of the sewage interception basket and is used for supporting; the upper part of the main longitudinal beam is rotationally connected with a turning plate; the diameter of the turning plate is identical to the diameter of the sewage interception basket; a flow guide groove is formed in the turning plate; a groove is formed in the first upper ring beam, and is matched with the inlet end of the flow guide groove; the inlet end of the flow guide groove is tangent with the bottom of the rainwater inlet pipe; and the outlet end of the flow guide groove is tangent with the bottom of the split-flow pipe. The rainwater split-flow sewage interception well has the advantages that the structure is simple; the rainwater split-flow sewage interception well can be dismounted; the use is convenient and fast; and the split-flow function and the sewage interception function are integrated.

The invention relates to a preparation method of an anti-pollution PTFE-CA / SiNPs composite film and particularly relates to a method for preparing a composite film with an anti-oil-pollution surface and a porous three-dimensional space net structure by virtue of an electrostatic spinning method. According to the preparation method, a super-hydrophilic anti-pollution layer is constructed on a PTFE surface of a hydrophobic group film by virtue of the electrostatic spinning method, and the PTFE-CA / SiNPs composite film is prepared. The preparation method has the beneficial effects that a film forming process is simple, the operation is convenient, and the industrial production is easily realized; and furthermore, the prepared composite film has good pollution resistance, high permeation flux, strong chemical stability, good mechanical property, high entrapment efficiency and wide application prospect.

The invention relates to the technical field of water treatment, and in particular relates to a non-valve filter with double filter layers used for water treatment. The filter comprises a water inlet pipe, a filter unit and a siphon system, wherein the water inlet pipe is located at the left upper part of the filter; a baffle is arranged at the opening of the water inlet branch pipe; homogeneous ceramsite filter material is located above a lower filter plate; an upper filter plate is located under a top cover; four clear water pipes run through the upper and lower filter plates and the filter material; a first water distribution chamber is located between the outer wall of the filter and the inner ring; a second water distribution chamber is located in an inner ring of the filter and above the filter material; a clear water chamber is located in the inner ring and under the lower filter plate; a water outlet is located at the right side of a flushing tank; the flushing tank is communicated with the clear water pipes; a siphon rising pipe is connected with a siphon down pipe and communicated with a top cover of the filter unit; the end of the siphon down pipe is provided with a washing intensity regulator and immersed in a drainage weir; a siphon break funnel is located at the left upper part of the flushing tank and connected with a siphon break pipe; an exhaust pipe and a siphon auxiliary pipe are located at the left side of the filter. The filter realizes automation of whole process of filtering and back flushing, is simple in operation, and is economical and practical.

The invention discloses an A2O2+MBR treatment method, and belongs to the technical field of environment friendliness, and sewage treatment reutilization. The method is characterized in that sewage enters an anaerobic pool through a water inlet, and is filtered by a biological filter bed in the anaerobic pool; preliminarily filtered sewage in the anaerobic pool enters an anoxic pool and is filtered by a biological filter bed in the anoxic pool; sewage filtered in the anoxic pool enters a micro-aerobic pool and is filtered by a biological filter bed in the micro-aerobic pool; sewage filtered in the micro-aerobic pool enters an aerobiotic pool and is filtered by a biological filter bed in the aerobiotic pool; sewage filtered by the aerobiotic pool enters a membrane pool and is filtered by an MBR membrane component in the membrane pool; and sewage filtered by the MBR membrane assembly in the membrane pool is removed through a water outlet under action of negative pressure. The method realizes efficient solid-liquid separation, water quality of outlet water is excellent and stable, amount of residual sludge is less, floor space is small, degradation-resistant organic substances are removed, and the defect that sludge expanding is easily generated by conventional active sludge is overcome. The method can be widely applied to the swage treatment field.

The invention relates to an efficient sewage interception device and an efficient sewage interception operation method for urban road gutter inlets. The efficient sewage interception device comprisesa collecting well body and a water collecting pipe, wherein the collecting well body comprises an upper collecting well body and a lower collecting well body which are detachably connected into a whole vertically by insertion, and the bottom of the lower collecting well body is provided with a microorganism filler layer. A vertically two-section rainwater grate of a hanging-basket structure is mounted at the upper end of the upper collecting well body, and a vertical-flow sand settling device is arranged in the upper collecting well body and comprises a splayed reflecting component, a silt interception component of a rectangular pyramid and an anti-sludge resuspension component of an inverted square frustum structure which are arranged from top to bottom. The efficient sewage interceptiondevice integrating a gutter inlet sewage interception modification technology, the vertical-flow sand settling device and the bottom microorganism filler layer can intercept large solid pollutants, silt and other particles and can ecologically degrade the sludge deposited at the bottom.

The invention provides a preparation process of a UPE filter membrane. The process comprises the following steps: preparing a mixed material, wherein the mixed material comprises polyethylene resin and a solvent system, the polyethylene resin at least comprises ultra-high molecular weight polyethylene with a mass average molecular weight of more than 3 million, and the solvent system comprises a solvent compound A and a non-solvent compound B; then heating, melting and mixing the mixed material to form a membrane casting solution; extruding through a die head to form a liquid membrane, wherein along with the reduction of the environment temperature, the liquid membrane is subjected to split-phase curing to form two raw membranes with holes in the outer surfaces different in aperture size; and carrying out synchronous stretching, first heat setting, extraction and second heat setting on the raw membrane to obtain the UPE filter membrane with the required membrane structure. According to the invention, the UPE filter membrane is an asymmetric membrane, has excellent trapping performance on impurity particles with the particle size of 1-30 nm, and is high in interception efficiency; the filtering speed is high, the time required for fluid to pass through the filter membrane is short, and the time cost is low; and the UPE filter membrane is especially suitable for the field of photoresist.

The invention discloses a desulfurization wastewater treatment process, which comprises a desulfurization wastewater pretreatment step, a desulfurization wastewater membrane concentration treatment step and a desulfurization wastewater salting-out pretreatment step, wherein the desulfurization wastewater pretreatment step comprises a two-stage electrochemical treatment step and a two-stage softening treatment step, the membrane concentration treatment section is designed into two-stage membrane treatment and comprises a rolled RO device and a mesh pipe type STRO device, and an MVR evaporator and a spray evaporator are combined in the salting-out the treatment section. According to the present invention, any organic agents are not added in the whole process.

The quick false tooth forming process includes the step of forming base molds in different tooth forms and sizes based on the oral cavity structure of human bodies; the step of trial wearing the base mold near the user's oral structure through painting fast hardened soft stuffing to the base mold, making the base mold contact with the maxilla; and the step of trimming the base mold taken down from the user's oral cavity via eliminating the overflowed stuffing and polishing to obtain false teeth well fitting the maxilla of the user. The present invention can reduce false teeth making period and raise false teeth locating efficiency.