77results about How to "HEPA" patented technology

The invention relates to an integrated sewage treatment device with high efficiency and low consumption and a treatment method, and belongs to the field of sewage treatment. The integrated sewage treatment device comprises a pretreatment unit, a multi-oxidation-deoxidation environment coupling biological reaction pond unit and a deep treatment unit sequentially connected. The multi-oxidation-deoxidation environment coupling biological reaction pond unit adopts a three-stage anoxia-aerobiotic alternating reaction pond filled with a circular composite glass ball porous microbial carrier. The deep treatment unit comprises a filter cloth dynamic film biological reaction pond and first and second dynamic films. Sewage is treated through the devices sequentially. The device provided by the invention cannot only remove carbon containing organic matters, but also has good nitrogen and phosphorus removal capacity.

The present invention discloses a function ceramic material for efficiently filtering radioactive iodine and cesium, and a preparation method thereof. The material is prepared through the following steps that: industrial sludge and clay are adopted as main materials, active carbon or wood chips, calcium hydroxide or calcium carbonate, iron powder or iron oxide powder, liquid paraffin and other auxiliary materials are matched, processes of mixing, stirring, granulation and the like are performed, and sintering in performed in an oxygen deficiency atmosphere or a reduction atmosphere to prepare the material. The function ceramic material has characteristics of porous property, rich pores, large specific surface area, strong absorption capacity, high water filtration flow, efficient removal and immobilization of radioactive iodine and cesium in nuclear wastewater, and easy shape and size adjustment, and can be used for purification treatments of nuclear wastewater and medical radioactive wastewater.

The invention belongs to the technical field of printing and dyeing wastewater treatment, in particular to a printing and dyeing wastewater treatment device which comprises a water filtering tank and a rotary filtering mechanism. A tank bottom filter screen is arranged at the bottom of the water filtering tank, the rotary filtering mechanism comprises a rotating shaft and centrifugal filter screen blades fixedly connected onto the rotating shaft, each centrifugal filter screen blade includes a solid blade area and a filter screen area, the solid blade area is arranged at one end of each centrifugal filter screen blade connected with the rotating shaft, and the filter screen area is arranged at the tail end of each centrifugal filter screen blade. The printing and dyeing wastewater treatment device is compact in structure, space occupancy is decreased, blocking of the filter screen can be avoided, and printing and dyeing wastewater can be efficiently pretreated.

The invention relates to an air conditioner based on bionics which aims to solve the problem that an existing air purifier has great limitation. According to the air conditioner based on the bionics, the structure of a two-layer filter screen is utilized for simulating the human body nasal cavity, macromolecule particles are filtered out, the filter screen is easy to replace, the service life is more than 15 years, wind resistance is small and is about one tenth that of a common filter screen purifier, and the energy efficiency ratio is over 4.0. A sterilization tank is utilized for humidification and sterilization, viruses, bacteria and microorganisms in air are filtered out efficiently, the filtration rate is up to 99.97%, and the cost is low. A heat emitting lamp heats the air, supplied wind is warm, wet, clean and suitable for human body breathing, the whole device simulates the human body breathing technology, and the warm, wet and proper wind and the suitable air are supplied to people.

The invention discloses an oil fluid filter with a magnetic adsorption mechanism. The oil fluid filter comprises a shell, a filter cartridge and a magnetic adsorption mechanism, wherein the outer part of the shell is wrapped by the magnetic adsorption mechanism; the magnetic adsorption mechanism sequentially comprises a first magnetic shielding sleeve, a magnet and lifting mechanisms from inside to outside; and the outer part of the magnet is wrapped by a second magnetic shielding sleeve. Due to the matching of all the parts, influences of the magnetic field of the magnet to other surrounding equipment can be avoided while iron wear debris in an oil fluid can be efficiently eliminated, and the aims of backflushing the filter cartridge and ensuring the filtering effect of the filter cartridge can also be achieved while the iron wear debris adsorbed on the shell can be automatically eliminated.

The invention discloses a novel photocatalytic air purifier which comprises an air purifier body. The air purifier body comprises a shell. The shell is provided with an air inlet and an air outlet. A primarily efficient filter screen, a high-performance nanofiber filter screen, a visible LED light source, a visible light response photocatalyst filter screen, a circulation fan and a humidification device are sequentially arranged in the shell in the air flowing direction. The air inlet is formed in the side wall of the shell, and the air outlet is formed in the top of the shell. The humidification device is arranged below the air outlet. An electrical circuit and an external power line are further arranged in the shell. According to the purifier, particulate pollutants and virosome of different sizes in air can be efficiently filtered out and intercepted, VOCs of different kinds in the air can be effectively degraded and mineralized, and the humidity of the purified air can be adjusted.

The invention relates to a nano SiO2 modified PTFE needle blend filter material and a preparation thereof and application thereof. The nano SiO2 modified PTFE needle blend filter material is obtainedby opening, mixing, combing, lapping, pre-needling and main-needling nano SiO2 modified PTFE short fibers and fibers A. The preparation method comprises the steps of preparing the nano SiO2 modified PTFE short fibers and preparing the nano SiO2 modified PTFE needle blend filter material. The nano SiO2 modified PTFE needle blend filter material possesses excellent friction electrification auxiliaryperformance so that fine particulate matters can be effectively captured; and the nano SiO2 modified PTFE needle blend filter material has the advantages of high efficiency, low resistance, stable physical and chemical property, long service life and the like.

The invention belongs to the technical field of printing and dyeing wastewater treatment and particularly relates to a wastewater treatment device. The wastewater treatment device comprises a water filtering tank and a rotary filtering mechanism, wherein the bottom of the water filtering tank is provided with a bottom filter screen; the rotary filtering mechanism comprises a rotating shaft and centrifugal filter screen blades fixedly connected to the rotating shaft; every centrifugal filter screen blade is composed of a solid blade area and a filter screen area, the solid blade area is arranged at one end of the centrifugal filter screen, which is connected to the rotating shaft, and the filter screen area is arranged at the tail end of the centrifugal filter screen blade. The wastewater treatment device is compact in structure, reduces space occupation, avoids blocking of the filter screen and effectively preprocess printing and dyeing wastewater.

The invention relates to an image-based wood region and main color extraction method. Through sample collection, proper parameters can be generated according to different production environments and shooting conditions, and a tedious parameter adjustment process is not needed. According to the method, pixel-level and irregular target area extraction can be achieved, irrelevant colors are efficiently filtered out, and therefore wood main color extraction is achieved.

The invention discloses a blue-green algae separation apparatus for sewage treatment. The blue-green algae separation apparatus for sewage treatment is characterized in that the separation apparatus comprises a separation pipe, a pulse vibrator and an algae collection pipeline, filter pipes are arranged in the separation pipe in a sleeving manner, the pulse vibrator is fixed on the pipe wall of the separation pipe, the algae collection pipeline also comprises algae collection branch pipes which communicate with the separation pipe, and the algae collection pipeline realizes pipeline communication with a main through the algae collection branch pipes. An adopted novel method combining pulse electromagnetic valves with pulse vibration can efficiently filter blue-green alga in a water body when the algal bloom of the blue-green alga breaks out. During use, sewage is directly introduced into through a water inlet, and is discharged out after being filtered, and blue-green alga can be effectively filtered. Moreover, operation is convenient, and workers only need to collect blue-green alga on time. The apparatus provided by the invention has a remarkable significance in application and popularization for the large-scale treatment of blue-green algae sewage.

The invention relates to a novel antibacterial far infrared mask which comprises an inner layer of anion fibers, a middle layer of N95 filter materials and an outer layer of antibacterial fibers, wherein the upper part of the middle layer of the N95 filter materials is provided with the outer layer of the antibacterial fibers, while the lower part of the middle layer of the N95 filter materials is provided with the inner layer of the anion fibers; and the inner layer of the anion fibers, the middle layer of the N95 filter materials and the outer layer of the antibacterial fibers are pressed and compounded. The mask at least has the following advantages of small breathing resistance, light weight, sanitary wearing and convenience for maintenance. In the invention, the middle layer is made of the N95 filter materials and can be used for efficiently filtering out various powders, bacteria and germs in the air; the inner layer is made of the negative oxygen ion fibers containing 4,400 negative oxygen ions/cubic centimeter and can be used for increasing the oxygen content, and after being used for a long term, the mask is not stifling and oppressed, and the oxygen content is high; and the outer layer is made of the antibacterial fibers and can be used for effectively stopping bacteria and germs from migrating and penetrating through fiber air gaps, meanwhile, the purpose of killing bacteria and germs can be achieved through breaking the metabolism of bacteria.

The invention discloses a preparing method of a green compound filter core material for an indoor air purifier. The preparing method includes the following steps that 1, non-wood fiber pulp and mercerized pulp are obtained through pulping; 2, the non-wood fiber pulp is made into an upper layer filter core material; 3, the mercerized pulp is made into a lower layer filter core material; 4, an interlayer wet method compound process is adopted to press and compound the upper layer filter core material and the lower layer filter core material into the composite filter core material in a moistened state; 5, the composite filter core material in a moistened state is dried and formed to obtain the green compound filter core material for the indoor air purifier, wherein the pore diameter of the green compound filter core material is 0.5-0.75 micrometers. 100% of plant fibers of different types are adopted, the filtering quality of the filter material is improved to the maximum, the green compound filter core material which is used for the indoor air purifier and is balanced in comprehensive filtering performance, high in biodegradability, environmentally friendly and excellent is trial-produced, which is of great significance in research and development of domestic compound filter core materials.

The invention relates to a preparation method of ligustrum lucidum polysaccharide; the process takes dry residue after ligustrum lucidum extracts triterpenoid as the raw materials, soaked in 30 to 50DEG C warm water with 3 to 5 times of amount every time (V/M) for 1 to 2h, repeatedly pressed for 2 to 3 times; the combined pressed liquid is concentrated into extract at low pressure and washed by absolute ethyl alcohol for 3 times, to prepare solid deionized water to be re-dissolved; and protein is removed through a Sevage method, deproteinized solution is concentrated by an ultrafilter film, to prepare the product. The process has the advantages of simple operation, lower cost, higher purity and facilitation to mass production operation.

The invention relates to a preparation method of mannitol. The technique comprises the following steps: extracting glossy privet leaf of triterpenic acid as a raw material, using 15-20 times (V/W) of deionized water to extract for 1.5-2 hours, carrying out ultrafiltration on extracting solution by an ultrafiltration membrane system with molecular weight cut off of 20000, heating and concentrating permeate till the relative density is 1.30-1.32, standing and crystallizing, using the deionized water to dissolve coarse crystal, boiling for 5 minutes, filtering with heat, recrystallizing for three times, using ether to clean, and drying at the temperature of 80-90 DEG C to obtain a product. The technique has simple operation, lower cost and higher purity and is beneficial to large-scale production operation.

The invention relates to a medical sterile water treater which comprises a water inlet, a water outlet, a housing and a rough filtering device, wherein fiber vertical bars are arranged in the rough filtering device, a biological film is connected behind the water inlet, the fiber vertical bars are uniformly distributed behind the biological film, a layer of rough gauze is coated on the fiber vertical bars, a plastic sleeve is coated the rough gauze, the side surface of the housing is provided with the water outlet, and a back washing port corresponding to the water inlet is arranged on the housing. The medical sterile water treater has the advantages of being simple and practical in structure, small in area occupation and suitability for various environments, and the filtered water is clean and reaches the standard of sterile water.

The invention discloses a high pressure disc tube type nanofiltration membrane salt separation system, and relates to the technical field of environmental protection sewage treatment. The high pressure disc type nanofiltration membrane separation system comprises a sewage storage tank, a pre-filter and modules which are connected in sequence; at least one set of the modules is arranged; each module comprises at least one high pressure disc tube type nanofiltration membrane column, the operating pressure of the high pressure disc tube type nanofiltration membrane column is 30 to 120 bar; and the module is respectively connected with a filtration liquid storage tank and a concentrate liquid storage tank. The high pressure disc tube type nanofiltration membrane salt separation system is especially suitable for treating a high salt concentrate containing sodium sulfate and sodium chloride, by use of the characteristic of high pressure operation, the sodium sulfate is efficiently removed and concentrated, and the sodium chloride is efficiently filtered, so that the sodium sulfate and the sodium chloride are separated, the industrial-grade sodium sulfate and the industrial-grade sodium chloride are efficiently recovered respectively, generation of hazardous waste can be reduced, and the recycling of resources is promoted.

The invention provides a multi-functional ultra-micro-calcium anion filter screen and a preparation method thereof and aims to solve the problem that an existing air conditioner filter screen is poor in filtration effect. The multi-functional ultra-micro-calcium anion filter screen, from top to bottom, is sequentially provided with a first aluminum alloy filter screen, a superfine fiber static filter screen, a nanometer ultra-micro-calcium far infrared filter layer, an anion filter layer and a second aluminum alloy filter screen, wherein the first aluminum alloy filter screen and the second aluminum alloy filter screen are mutually fixed to form a filter screen frame; the superfine fiber static filter screen, the nanometer ultra-micro-calcium far infrared filter layer and the anion filter layer are all positioned in the filter screen frame; the third layer and the fourth layer each adopt a sheath-core compounding technology; low-melting-point polymer and high-melting-point polymer double-component sheath-core wires are knitted so that the filter screen is adhered at intersected points of warp and weft wires; the intersected points of the warp and weft wires are adhered, so the filter screen is not affected by a friction force during a self-cleaning process, meshes are protected from deformation, stable filtration efficiency is maintained, and resistance is not increased.

The invention discloses a sunlight-driven water purifying material and a preparation method and application thereof. The sunlight-driven water purifying material comprises a framework structure made of a hydrophilic material, and polyN-isopropylacrylamide hydrogel is grown on the framework structure and coated with a coating film having molecular or ionic screening effect. By uniformly coating a graphene oxide nanofilm on the periphery of the polyN-isopropylacrylamide hydrogel, the material can be endowed with ability of filtering ions and molecules; a graphene oxide coating can convert incident light into heat energy when receiving sunlight irradiation to heat the hydrogel inside to extrude moisture absorbed by the hydrogel and evaporate the same at the same time, so that water treatmentefficiency of the material is improved greatly.

The invention discloses a portable water purifier. The portable water purifier comprises a bottle body, a bottle cap arranged at the top of the bottle body, and a filter core arranged in the bottle body; the top of the filter core is connected with a water outlet tube; the bottom of the filter core is provided with a water inlet tube; and the filter core sequentially comprises a stainless steel screen, a reverse osmosis membrane, triiodide resin, maifan stones, active carbon, PP cotton and a lower stainless steel screen. The portable water purifier can highly-effectively remove bacteria, and can effectively remove multiple pathogens, bacteria and protozoa cysts, such as Escherichia coli, cholera bacteria and Bacillus anthraci; the portable water purifier highly-effectively filters out organic precipitates, iron rusts, suspensions, dusts and other impurities from water; the portable water purifier effectively removes soluble heavy metals from water, such as lead, mercury and arsenic; the portable water purifier highly-effectively removes residual chlorine from water, improves the mouthfeel, and prevents chronic invasion of trihalomethane and other strong oncogenic substances; and the portable water purifiers highly-effectively softens water and inhibits growth and breeding of microorganisms.