233results about How to "Reduce pollutant content" patented technology

Lignin polymers having distinctive properties, including a generally high molecular weight and generally homogeneous size distribution, as well as preservation of native reactive side groups, are isolated by solvent extraction of plant materials. Methods for isolation of lignin polymers, and for use of the isolated lignin polymers are disclosed. Compositions containing lignin isolated from plant materials, such as carbon fiber composites, resins, adhesive binders and coatings, polyurethane-based foams, rubbers and elastomers, plastics, films, paints, nutritional supplements, food and beverage additives are disclosed. Xylose and xylose derivatives, furfural, fermentable sugars, cellulose and hemi-cellulose products may be used directly or further processed. The lignin polymers and other plant-derived products disclosed herein may be produced in abundance at low cost, and may be used as substitutes for feedstocks originating from fossil fuel or petrochemical sources in the manufacture of various products.

An integrated hydrotreating, steam pyrolysis and catalytic cracking process for the production of olefins and aromatic petrochemicals from a crude oil feedstock is provided. Crude oil and hydrogen are charged to a hydroprocessing zone under conditions effective to produce a hydroprocessed effluent, which is thermally cracked in the presence of steam in a steam pyrolysis zone to produce a mixed product stream. Heavy components are catalytically cracked, which are derived from one or more of the hydroprocessed effluent, a heated stream within the steam pyrolysis zone, or the mixed product stream catalytically cracking. Catalytically cracked products are produced, which are combined with the mixed product stream and the combined stream is separated, and olefins and aromatics are recovered as product streams.

The invention provides a process, a system and equipment for converting household garbage without support combustion of the prior fuels, which relates to a process and equipment for processing garbage. The process is characterized in that the household garbage is sent into a gasification furnace or an incinerator after separating, dehydrating by rolling compaction and air-drying treatment; garbage fuel is converted in the furnace by a mode of gasification or incineration, and is subjected to baking, pyrogenation, gasification and carbon residue burn-out in the furnace; the converted synthesis gas is used for cleaning energy; waste heat of incineration is absorbed by heat-exchange equipment for reclamation; garbage rolling liquid is sent into a digesting machine for anaerobic fermentation so as to produce biogas, the biogas is used as auxiliary fuel of the incinerator, and the digested residue and residual liquid are used for fertilizing crops; and inorganic substances separated from the garbage are used as raw materials to manufacture bricks, and clinker discharged from the incinerator or the gasification furnace is used for producing cement or fertilizer. The process, the system and the equipment comprehensively utilize the garbage so as to achieve complete dissolving treatment, and the equipment has a simple structure and low investment cost, and is easy to popularize..

This invention relates to a composite microbe preparation, which is composed of: photosynthetic bacteria group 2-3.8 wt.%, lactic acid bacteria group 0.6-1.8 wt.%, Saccharomyces cerevisiae 1-1.8 wt.%, Gram-positive bacteria group 1-3.8 wt.%, filamentous bacteria group 1-3.8 wt.%, culture medium 10-38 wt.%, and deionized water 65-80 wt.%. The preparation method comprises: performing amplification culture on the above bacteria separately to obtain production bacteria solutions, sealing in a stainless steel fermentation tank, adding deionized water and culture medium, inoculating the production bacteria solutions, fermenting until the pH is 3.8-4 and the living bacteria number is not less than 2X10 to the power 9, then packaging and storing. The composite microbe preparation can rapidly and effectively remove inorganic and organic pollutants in wastewater, denitrify, dephosphorize and inhibit algae growth by oxidation, reduction and fermentation.

The invention provides a method for purifying water quality of a circulating water factory aquacultural system and a composite microbial inoculum thereof. The method is to prepare three microbe composite florae into a unit preparation respectively, wherein a composite flora I consists of 30 to 50 percent of photosynthetic bacteria, 30 to 50 percent of bacillus, and 20 to 30 percent of lactobacillus; a composite flora II consists of 20 to 30 percent of photosynthetic bacteria, and 70 to 80 percent of nitrobacteria; a composite flora III consists of 20 to 40 percent of pseudomonad, 20 to 40 percent of the bacillus, 20 to 40 percent of alcaligenes, and 20 to 40 percent of paracoccus; and the three composite florae are used in the water quality purification treating process of the circulating water factory aquacultural system in working sections according to the proportion that the composite flora I is between 30 and 40 percent, the composite flora II is between 30 and 40 percent, and the composite flora III is between 30 and 40 percent. The florae with beneficial functions are harmonized and compensated with each other, so that high-efficiency degradation of pollutants and water body purification can be realized, the dissolved oxygen content can be improved, pH value can be stabilized, and yielding water can meet the requirement of aquaculture.

An integrated hydrotreating, steam pyrolysis and coker process for the direct processing of a crude oil is provided to produce olefinic and aromatic petrochemicals, and petroleum coke. Crude oil and recycled coker liquid product are charged to a hydroprocessing zone operating under conditions effective to produce a hydroprocessed effluent which is thermally cracked in the presence of steam to produce a mixed product stream. The residual liquid fraction recovered upstream of the thermal cracking unit or within the thermal cracking unit is thermally cracked under conditions effective to produce coke and coker liquid product. The coker liquid product is recycled to the step of hydroprocessing while the petroleum coke is recovered. Hydrogen from the mixed product stream is purified and recycled to the hydroprocessing zone, and olefins, aromatics and pyrolysis fuel oil are recovered from the separated mixed product stream.

The invention discloses a cylinder filter, and belongs to the technical field of rainwater treatment devices. The cylinder filter comprises an outer cylinder with water passing holes and a collecting pipe with water passing holes, wherein the outer cylinder and the collectingpipe are coaxially arranged. The bottom end of the outer cylinder and the bottom end of the collecting pipe are detachably connected to the base. A cover plate is detachably connected to the top end of the outer cylinder. A handle is fixedly connected to the cover plate. The space between the outer cylinder and the collecting pipe is filled with a filtering medium for filtering rainwater. The diameter of the water passing holes in the outer cylinder and the diameter of the water passing holes in the collecting pipe are both smaller than the grain diameter of the filtering medium. The cylinder filter is stable and reliable in structure and can be conveniently mounted and dismounted on site, meanwhile the filtering medium can be conveniently replaced, the workload is reduced, and the efficiency is improved.

A primary cell having an anode comprising lithium and a cathode comprising iron disulfide (FeS2) and carbon particles. The electrolyte comprises a lithium salt dissolved in a solvent mixture. A cathode slurry is prepared comprising iron disulfide powder, carbon, binder, and a liquid solvent. The mixture is coated onto a substrate and solvent evaporated leaving a dry cathode coating on the substrate. The cathode coating is then baked at elevated temperatures in atmosphere under partial vacuum or in an atmosphere of nitrogen or inert gas. The anode and cathode can be spirally wound with separator therebetween and inserted into the cell casing with electrolyte then added.

The invention relates to a fresh air purifying system with an intelligent automatic control function. The fresh air purifying system comprises an air inlet device, an air outlet device, an air channel, an air filtering device, a fresh air device and an intelligent control module. The air inlet device is provided with an air inlet and an axial flow fan. The air outlet device is provided with an air outlet and a centrifugal fan. The air inlet device and the air outlet device are connected through the air channel. The air filtering device is arranged in the air channel. The fresh air device is opposite to the air inlet, and comprises a multi-purpose air opening communicating with the outside and an air regulation plate rotationally arranged in the multi-purpose air opening. The intelligent control module is configured to enable the fresh air purifying system to operate in different modes according to received air quality information. The air purifying system can be utilized for lowering noise, dissipating heat and flexibly adjusting the fresh air amount between non-fresh air and pure fresh air, optimum indoor air quality parameters are automatically achieved and maintained in real time, and meanwhile electric energy is saved.

The invention provides a biomembrane reactor, which comprises an outer cylinder with a water inlet and a water outlet provided at the bottom part; an inner cylinder arranged in the outer cylinder, two ends of the inner cylinder are communicated with the outer cylinder, the top of the inner cylinder is lower than the top of the outer cylinder; a filling material used for filling a bio-contact oxidation tank of the inner cylinder; a filter material used for filling the biological filter tank between the inner cylinder and the outer cylinder; an aeration apparatus provided at the bottom of the outer cylinder, the aeration apparatus is communicated with the inner cylinder. The invention provides a waste water treating system and a method for treating waste water. The biomembrane reactor provided in the invention has the functions of the bio-contact oxidation tank and the biological filter tank, waste water forms a circulation between the inner cylinder and the outer cylinder under the promotion effect of the aeration apparatus, and waste water passes through the filling material used for bio-contact oxidation tank and the filter material used for biological filter tank for a purifyingprocess, thereby the effect of treating waste water can be improved.

A clean incineration system of refuse and organic wastes and a device thereof relate to refuse incineration equipment. The incineration system mainly consists of an dry fan, a gas phase circulating incinerator, an air preheater, a dedusting / purification device, an induced draft fan and a chimney, a discharge outlet of the dry fan is connected to a feed inlet of the incinerator, a fume outlet of the incinerator is connected to the air preheater, the air preheater is connected to an air supply outlet of the dry fan, a suction opening of the dry fan is connected to a fume inlet of the dedusting / purification device, and a fume outlet of the dedusting / purification device is connected to the chimney by the induced draft fan. A dry distillation zone and a gasification zone form a gasification environment, and a first combustion zone and a second combustion zone form a combustion environment in the gas phase circulating incinerator, and a circulating air conduit and a circulating fan form a gas phase circulation loop outside the incinerator. Refuse fuel is gasified in the incinerator for combustion, and gaseous material generated in the gasification environment is allowed to have circulating gasification and combustion. The system and the device have the advantages of high burnout ratio, few pollutants generated from combustion and clean incineration of refuse.

The invention relates to a bottom mud repair and treatment material for an urban black and odorous river channel and a preparing method of the bottom mud repair and treatment material. The bottom mud repair and treatment material for the urban black and odorous river channel and the preparing method of the bottom mud repair and treatment material can be applied to the technical field of bottom mud repair of urban black and odorous river channels. Raw materials for preparing the filler include CaO2, MgO2, attapulgite clay, dry EM powder and nanometer titanium dioxide. All the raw materials are pretreated with specific steps respectively and then evenly mixed according to a specific proportion, and the powder material is formed. The repair material is evenly mixed with the bottom mud of the urban black and odorous river channel in situ, nitrogen, phosphate and organic matter in the bottom mud can be effectively removed, stinks can be eliminated, and the effect of controlling source pollution in the river channel can be achieved.

The invention provides a method for preparing biomass moulded coal by using biomass and inferior smokeless pulverized coal as raw materials. The biomass moulded coal is prepared by uniformly mixing the biomass, the inferior smokeless pulverized coal and additives (a sulfur fixation agent, a biomass binder, an oxidant and a waterproofing agent), and performing low-pressure compression moulding by a wet method, wherein the sulfur fixation agent is calcined lime CaO; the biomass binder is light yellow dope prepared by treating bagasse by using 1 to 2 percent sodium hydroxide solution; the oxidant is potassium permanganate; and the waterproofing agent is tar or a binder. The biomass moulded coal comprises following raw materials in part by mass: 40 to 65 parts of inferior smokeless pulverized coal, 25 to 55 parts of biomass and 5 to 10 parts of additive. The biomass moulded coal has the advantages of low cost, low ignition point, high burn-off rate and integrative desulfurization and water proofing performance, and has great significance of energy conservation and environmental protection.

The invention relates to an advanced treatment process of coking waste water, which is characterized in that MBR (Membrane Bio-Reactor) treatment, ozone contact oxidation treatment, activated carbon adsorption treatment and reverse osmosis membrane treatment of the coking waste water after pretreatment and A / O biochemical treatment are sequentially carried out to satisfy the water quality requirement of makeup water for producing clean circulating water, and a small amount of concentrated solution can be sprayed to a coal yard for dust fall and dust prevention and also can be used as the makeup water for wet quenching. The invention has the advantages that the biochemical sludge concentration and the volume load of a biochemical reaction pond are improved, coagulation treatment is cancelled, and occupied land is saved; outlet water can be directly recycled as the makeup water for a system for producing the clean circulating water, and the reutilization of a water resource and the zero emission of the coking waste water are realized.

The invention relates to a processing method before the application of hydrogenation catalyst, comprising the detailed process as follows: organic solvent, elemental sulfur and water are introduced in oxidated hydrogenation catalyst; subsequently, heating predisposal is carried out under a certain condition. The processing method before the application of the hydrogenation catalyst loads the sulfur-contained substance such as the elemental sulfur to the hydrogenation catalyst; a certain interaction is generated and little heat is discharged; and the water vapor which is generated during the heat disposal process of the added water adjusts the interaction of the sulfur and the catalyst and reduces the heat discharging degree during the heat disposal process. Compared with the prior art, the catalyst obtained by the method has the advantages of high utilization ratio of the sulfur-contained matter, gradual increment of the temperature of the catalyst bed and high activity of the catalyst when the activation is applied. The method can be used for processing before the application of various hydrogenation catalysts.

A process is provided that is directed to a steam pyrolysis zone integrated with a hydrotreating zone and a solvent deasphalting zone to permit direct processing of crude oil feedstocks to produce petrochemicals including olefins and aromatics. The integrated hydrotreating, solvent deasphalting and steam pyrolysis process comprises charging the crude oil to a hydroprocessing zone operating under conditions effective to produce a hydroprocessed effluent reduced having a reduced content of contaminants, an increased paraffinicity, reduced Bureau of Mines Correlation Index, and an increased American Petroleum Institute gravity; charging the hydroprocessed effluent to a solvent deasphalting zone with an effective amount of solvent to produce a deasphalted and demetalized oil stream and a bottom asphalt phase; thermally cracking the deasphalted and demetalized oil stream in the presence of steam to produce a mixed product stream; separating the mixed product stream; purifying hydrogen recovered from the mixed product stream and recycling it to the hydroprocessing zone; recovering olefins and aromatics from the separated mixed product stream; and recovering pyrolysis fuel oil from the separated mixed product stream.

The invention relates to a decoupling combustion device for the biomass briquetting fuel and the combustion method. The device comprises a vertical combustion furnace, a combustion chamber and a pyrolysis chamber; the bottom of the combustion chamber is communicated with the bottom of the pyrolysis chamber; a hopper is mounted on top of the pyrolysis chamber; a gate is mounted at the lower part of the combustion chamber. The invention is characterized in that a screw conveyor is mounted at the lower part of the pyrolysis chamber; a flue gas interlayer is mounted on the outside wall of the pyrolysis chamber, which is communicated with a flue gas channel at the lower part of the furnace body; an air duct is mounted at the lower part of the gate; a flue gas baffle is mounted in the combustion chamber; the upper part of the flue gas baffle is communicated with the flue gas interlayer. The method is combined with the combustion characteristic of the biomass briquetting fuel, which processes the pyrolysis and the combustion of the biomass briquetting fuel respectively in two areas with different temperature; the method alleviates the contradiction that the pyrolysis speed does not match with the combustion speed; the method eliminates the coupling of different pollutants in the generation process, reduces the loss of incomplete combustion and decreases the discharging amount of the pollutants such as CO and NOx through the re-organization of the combustion of the volatile and the char.

The invention discloses low-pressure oil film breaking and atomizing technology and device thereof. The low-pressure oil film breaking and atomizing technology is characterized in that fuel oil and an auxiliary gas are formed into gas-liquid two-phase fluids, the gas-liquid two-phase fluids are jetted into a furnace cavity through an oil gun, and the jetted gas-phase fluids enable a formed oil film to be broken by overcoming the surface tension of the jetted gas-phase fluids so as to realize the superfine atomization of the fuel oil; the outlet of a circular jet hole is provided with a secondary transverse ultrasonic air flow, the jet direction of the secondary transverse ultrasonic air flow is perpendicular to that of the circular jet hole, and the secondary transverse ultrasonic air flow further impacts initially-atomized fuel oil jetted from the circular jet hole to carry out secondary breakage and atomization on the fuel oil. The invention has the advantages of smaller average diameter of an oil drop, high penetrating capability of oil mist, good adjustability of an atomized taper angle and very little change of the average dimension of the oil drop when the viscidity of the fuel oil is enhanced or the ejection force of the oil gun is smaller; and in addition, the invention only needs lower fuel oil pressure of 0.4-0.5 MPa, thereby lowering the pressure of a fuel oil system, reducing the electricity consumption of an oil pump and saving the plant electrical consumption.

The invention relates to a hydrogen-doped natural gas transportation and separation system and a control method thereof. The system comprises a hydrogen buffer tank, a natural gas pressure regulator, a natural gas hydrogen-doped gas mixing device, a monitoring module, a hydrogen-doped natural gas separation and purification device and a hydrogen storage device; and natural gas and hydrogen are respectively subjected to pressure treatment through the hydrogen buffer tank and the natural gas pressure regulator, then are conveyed to the natural gas hydrogen-doped gas mixing device through a natural gas transportation pipeline to obtain hydrogen-doped natural gas, and are transported to the hydrogen-doped natural gas separation and purification device through the natural gas pipeline to obtain pure hydrogen for hydrogen equipment to use or store. According to the system, hydrogen is transported and separated through the natural gas pipeline, the hydrogen transportation cost can be effectively reduced, and efficient utilization of energy is promoted.

The present invention discloses a fuel oil, specially, it is a fuel oil whose alcohol content is high. Its composition contains (wt%) 5-90% of gasoline or diesel oil, 5-90% of methyl alcohol or ethyl alcohol, 0.1-2% of alkylnitryl compound (C1-C18), 0.1-3% of polyethylene glycol ether [R-(OC2H4)n-OH, where R=C1-C18, n=1-5], 0.5-32% of fusel oil, 0.5-28% of secondary octyl alcohol, 0.1-16% of heteroalcohol-base nitrate, 0.1-12% of secondary octyl nitrate and 0-32% of water. Said invented homogeneous fuel oil can be stored for a long period of time free from phase separation, and can make the engine power be raised by 1-3.8%, and can reduce tail gas pollutant discharge.

An integrated hydroprocessing and fluid catalytic cracking process is provided for the direct processing of a crude oil to produce olefinic and aromatic petrochemicals. Crude oil and hydrogen are charged to a hydroprocessing zone operating under conditions effective to produce a hydroprocessed effluent having a reduced content of contaminants, an increased paraffinicity, reduced Bureau of Mines Correlation Index, and an increased American Petroleum Institute gravity. The hydroprocessed effluent is separated into a low boiling fraction and a high boiling fraction. The low boiling fraction is cracked in a first downflow reactor of a fluid catalytic cracking unit in the presence of a predetermined amount of catalyst to produce cracked products and spent catalyst, and the high boiling fraction is cracked in a second downflow reactor of the fluid catalytic cracking unit in the presence of a predetermined amount of catalyst to produce cracked products and spent catalyst. Spent catalyst from both the first and second downflow reactors are regenerated in a common regeneration zone, and first and second cracked product streams are recovered.

The invention discloses an initial rainwater filter. The initial rainwater filter comprises a support bottom plate and a cover plate, wherein an outer filter screen and an inner filter screen are coaxially fixed on the support bottom plate; the cover plate covers tops of the outer filter screen and the inner filter screen; filter media are arranged between the outer filter screen and the inner filter screen; a drainage cavity is defined by the inner side of the inner filter screen; the bottom of the drainage cavity is connected with a drain pipe; a floating flow limit device is arranged at an inlet of the drain pipe. The filter adopts the outer filter screen, the filtering media and the inner filter screen to perform triple filtering on rainwater and adopts the floating flow limit device to guarantee sufficient contact of rainwater and the filtering media, and pollutants are effectively removed; when the filtering media are blocked by the pollutants, the floating flow limit device can increase flow of rainwater passing through the filter; when the filter does not work, the pollutants intercepted by the filtering media are washed out of the filter through washing, and the infiltration capacity of the filtering media is improved.

The invention discloses an electrolysis unit with a membrane filtration function and relates to an electrolysis unit. The electrolysis unit is provided with a shell and an electrode set, wherein a water inlet and an air inlet are arranged on the bottom part of the shell, and the water inlet is connected with a water inlet pipeline through a pipeline; the air inlet is connected with an aerating apparatus through a pipeline; an overflow opening and a drain outlet are respectively arranged on the upper part and the lower part of the shell, and the overflow opening and the drain outlet are connected with an external blow-off line through pipelines; the electrode set is provided with a bracket, a cathode, an anode and a water outlet; the electrode set is fixed on the shell through the bracket,the cathode is a metal membrane component with filtering and separating functions, and the anode is one of metal anode, alloy anode, carbon anode and titanium anode, and the like; and a connecting plate connected with a power supply is arranged on one end of the cathode, an anode binding post and a cathode binding post are arranged on the connecting plate, a filtration water collecting pipe and afiltration back wash pipe are arranged on the other end of the cathode, the filtration water collecting pipe is connected with a water suction pump, and the filtration back wash pipe is sequentially connected with a back wash pump and a chemical feed pipe. The electrolysis unit integrates electrolysis and membrane filtration functions.

The invention provides a household garbage incineration device without combustion-supporting of conventional fuel, relating to a garbage incineration device, and mainly comprising a furnace body, a flue gas circulation pipe and a circulation fan, wherein the interior of the furnace is divided into a drying region, a pyrolytic decomposition region, a gasification / combustion region and a second combustion region according to the operation conditions thereof; the regions are adjacent and communicated in sequence; the drying region is disposed on the front part within the furnace, the gasification / combustion region is arranged on the back part of the furnace, the pyrolytic decomposition region is arranged between the drying region and the gasification / combustion region, and the second combustion region is arranged over the gasification / combustion region; the front end of the drying region is provided with a feeding port, a circulation flue gas outlet interface is disposed over the front part of the drying region; a circulation flue gas inlet interface is accessed from the wall of the gasification / combustion region; a shell is arranged above the second combustion region, or a kiln is arranged on the internal heat outlet of the second combustion region. The household garbage incineration device without combustion-supporting of conventional fuel provided by the invention has the advantages that the garbage and waste can comprehensively utilized, the household garbage can be completely dissolved, the pollutant content within the flue gas which is discharged is low, the structure of the device is simple, the investment cost is low and the popularization work is easy.

The present invention relates to a coupling water supply purifying method of biological reinforced powder active carbon and diatomite, which comprises the following steps: firstly, powder active carbon and diatomite are continuously fed into raw water which needs to be purified quantitatively to be stirred to mix through mechanism to enable the powder active carbon and the diatomite to suspend in water to absorb organic matters in the raw water; then, biological powder active carbon and diatomite particles coated with microorganism are formed by a labor reinforced method; and organic pollutants in the raw water is further degraded by a microorganism function. Compared with the prior art, on the basis of the coupling water supply purifying technique of biological reinforced powder active carbon and diatomite, the present invention has three functions of absorption, biological degradation and dynamic film separation, and can further reduce the content of pollutants in the raw water, in particular to aim to the problems of high raw-water permanganate index, ammonian and organic pollutants, and the like. Thus, drinking water after being purified satisfies every index in the new sanitary standard for life drinking water GB 5749-2006 issued by China.

The present invention is a method and system for reducing contamination in the resulting plasma of a weld produced by a fiber laser. The invention establishes the fiber laser in an optimal configuration for applying a high density beam to a weld material that eliminates spectral interference. The beam is applied in a narrow bandwidth of 1064 nm+ / −0.5 nm in one operative condition using an inert shielding gas, preferably argon, in a cross-flow or controlled environment around the welding region to prevent contamination of the plasma forming in the weld region. The method is optimized by determining and avoiding the emission spectrum for the fiber laser and the cover gas or gasses as well as any particular excitation spectra for the weld material. The system can utilize a single laser input, or can utilize multiple lasers joined by coupling means and utilizing a switch to select one or more of the fiber lasers.

The invention belongs to the technical field of fuels and discloses M50 clean environment-friendly petrol. The M50 clean environment-friendly petrol is formed by mixing the following components in percentage by weight: 50% of methanol, 0.5% of cerous nitrate, 0.5% of oleic acid, 0.5% of caster oil, 0.8% of isobutanol, 1% of n-butyl alcohol, 1% of alcohol, 1.5% of tributyl phosphate, 2% of methyl tert-butyl ether, 0.6% of borneol, 1.2% of ethyl nitroacetate, 0.2% of aluminum phosphate,, 1.2% of tetrahydrofuran, 1.5% of polyvinyl alcohol, 0.8% of acetone, 0.6% of butanone, 1.0% of benzene, 0.5% of 2,4-dimethyl aniline, 0.3% of zinc peroxide, 0.8% of alkanolamide, 1% of cyclohexane, 32.375% of 93# petrol, 0.05% of benzotriazole and 0.075% of T501 antioxidant. The M50 clean environment-friendly petrol disclosed by the invention is better in performance parameters, and environment-friendly and clean.

The invention discloses a Cordyceps sinensis mutant strain for production of Cordyceps sinensis mycelia and relates to the field of application of a food microorganism technology. The mutant strain is collected in CCTCC (China Center for Type Culture Collection) in Wuhan, China on Jan. 23rd, 2015 with the number of CCTCC M 2015064 and the recommended Latin name of Cordyceps sinensis CCTCC M 2015064. In order to avoid use of toxic and harmful chemical mutagens and a genetic engineering method which is not recognized by the public in the food field, an ultraviolet physical mutagenesis technology is considered to be simple and easy, so that the ultraviolet mutagenesis method is adopted for mutagenesis, excellent characters of the novel Cordyceps sinensis strain are guaranteed through a series of screening methods in aspects of stability, hereditary and the like, and a strain basis for obtaining better-quality Cordyceps sinensis mycelium raw material, which can be used for producing healthy food, for industrial efficient fermentation of low-cost and novel rice bran and wheat bran complete liquid culture media to which cysteine hydrochloride and sodium copper chlorophyllin are added.

The invention discloses an indoor air purifier which comprises a liquid storage tank, filter elements, activated carbon, an exhaust fan and ultraviolet lamp devices. The indoor air purifier has the advantages that air can be upwardly exhausted from the lowermost layer by the exhaust fan, a spray nozzle is arranged above each layer of filter elements, alga liquid sprayed by the spray nozzles can be sufficiently in contact with the air, particulate matters and water-soluble matters in the air can be dissolved in water, accordingly, a PM2.5 (particulate matter 2.5) value of the air can be greatly lowered, and the air further can be humidified; NOx, formaldehyde, heavy metal ions and the like in the air can be absorbed and utilized by micro-algae after being dissolved in the water and subjected to reaction by the aid of culture media; pollutants in the air can be absorbed by the micro-algae and can be converted into nutrition of the micro-algae, and oxygen can be released by the aid of photosynthesis; VOCs (volatile organic chemicals) in the air can be adsorbed and removed by the activated carbon of activated carbon layers; inactivation effects can be realized for bacteria in the air by ultraviolet lamps; four air purification technologies including a micro-alga purification technology, an activated carbon adsorption technology, a water washing purification technology and an ultraviolet sterilization technology are combined with one another, and accordingly service requirements of modern families can be met.

The present invention concerns a filtering medium, a method for the production thereof, the use of said filtering medium and a method for reducing the content of multiple contaminants simultaneously in fluids by means of said filtering medium through a physical barrier, a chemical process or biological process, wherein said filtering medium consists of or comprises at least one of the following: a mixture (A) containing a major part of an iron-based powder and a minor part of a copper based powder, an iron-copper powder alloy (B), and an iron-based porous and permeable composite containing copper (C).