383results about How to "Environmental pollution" patented technology

Disclosed is a method of preparing a micro-structured powder for bonded magnets having high coercivity, which is advantageous in terms of low preparation costs by recycling magnet scraps, simplified mass production, minimal environmental contamination by such a recycling process, and the preparation of stable anisotropic powders having high coercivity. Further, a magnet powder prepared by the above method is provided. The current method is characterized in that R—Fe—B type anisotropic sintered magnets or scraps thereof are crushed to prepare 50-500 μm sized magnet powders, which are then mixed with 1-10 wt % of rare earth fluoride (RF₃) powders and thermally treated at high temperatures (500-1100° C.) in a vacuum or an inert gas, to cause the change of matrix-near surface and grain boundary of the powders. Thus obtained powders include a matrix phase having R₂Fe₁₄B crystal structure, a R-rich grain boundary phase containing rare earth fluoride, and other phases, in which the matrix phase has an average grain size of 1-20 μm, and the powders have an average size of 50-500 μm with superior magnetic characteristics of (BH)max≧20 MGOe and iHc≧5 kOe.

This invention relates to: a molding material comprising a bundle of continuous reinforcing fibers (A), a polyarylene sulfide prepolymer (B) comprising at least 50% by weight of cyclic polyarylene sulfide and having the weight average molecular weight of less than 10,000 or polyarylene sulfide (B′) having the weight average molecular weight of 10,000 or greater and the degree of dispersion of 2.5 or lower, and thermoplastic resin (C); a prepreg comprising a resin composition comprising the polyarylene sulfide prepolymer (B) impregnated into a reinforcing fiber; and a method for producing a fiber-reinforced molding substrate comprising step (I) of continuously feeding a bundle of continuous reinforcing fibers, step (II) of combining cyclic polyarylene sulfide with the reinforcing fiber bundle, step (III) of heating the composite obtained in step (II) to subject the cyclic polyarylene sulfide to ring-opening polymerization to convert into polyarylene sulfide, and step (IV) of cooling the composite obtained in step (III) and withdrawing the same.

A method is described for improving the nutritional value of a foodstuff comprising a source of myo-inositol hexakisphosphate by feeding the foodstuff in combination with a phytase expressed in yeast. The method comprises the step of feeding the animal the foodstuff in combination with a phytase expressed in yeast wherein the phytase can be selected from the group consisting of AppA1, AppA2 and a site-directed mutant of AppA. The invention also enables reduction of the feed to weight gain ratio and an increase bone mass and mineral content of an animal. A foodstuff and a feed additive comprising AppA2 or a site-directed mutant of AppA are also described.

The invention discloses a multi-dimensional and parallel-swing sea wave power generation device. A top cover is fixedly connected with the top wall of a buoyancy box, one end of a three-degree-of-freedom movement pair is fixedly connected with the top cover, the other end of the three-degree-of-freedom movement pair is engaged with a swing rod, one end of the swing rod penetrates through the top wall of the buoyancy box and is fixedly connected with an outside device, the other end of the swing rod is fixedly arranged on an upper platform through the support of rib plates, a spring is fixedly connected with a shaft shoulder of the swing rod, six parallel hydraulic cylinders are arranged between the upper platform and a lower platform, piston rods of the six parallel hydraulic cylinders are hinged to the upper platform, cylinder bodies of the six parallel hydraulic cylinders are hinged to the lower platform, the lower platform is fixedly arranged on an oil mixture tank, the oil mixture tank is fixedly connected with the side wall of the buoyancy box, the oil mixture tank is connected with a hydraulic motor through a separating pipe and a return pipe, a generator is connected with the hydraulic motor, the generator and the hydraulic motor are arranged at the bottom of the buoyancy box, and an energy accumulator is connected with the hydraulic motor. The device has the characteristics that the service life is long, and the pollution is little; and while the energy of the sea wave in the transverse swinging is absorbed, the energy of the sea wave in the vertical direction can also be absorbed.

The present invention relates to a steam explosion wall-breaking method of seaweed cell wall, and said method includes the following steps: (1). placing wet seaweed in steam explosion tank, introducing saturated steam until the tank interior temp is up to 80-100 deg.C, and retaining for 1-8 min.; (2). stopping steam supply, introducing high-pressure air into the steam explosion tank until tank interior pressure is up to 0.8-1.5 MPa; and (3). instantaneously reducing pressure and releasing so as to obtain seaweed product whose wall-broken rate is up to 100%. Said seaweed product can be used for preparing seaweed functional food with high nutritive value and good taste, agar and carrageen gum, etc.

The invention discloses a Rhododendron delavayi float seedling method, comprising the following steps: (1) constructing a float seedling pool: selecting a site, constructing a pool and building a shed; (2) preparing seedling substrate: firstly crushing muck and laterite, then adding fine sand, pearlite and plant ash, and mixing evenly in the process of preparing the seeding substrate, wherein the substrate comprises the muck, laterite, fine sand, pearlite and plant ash according to the volume ratio of 5:1:2:1.7:0.3; and sterilizing the well-mixed substrate (using fumigation), adding 10% of water to evenly wet, regulating the PH value of the substrate to be 5.5-6.0 (FeSO4 is used to decrease the PH value of the substrate when the substrate is alkaline, and NaOH solution is used to increase the PH value of the substrate when the substrate is acidic); (3) panning and sowing the substrate; and (4) preparing the Rhododendron delavayi float seedling nutrient solution. By adopting the flowerflow seedling substrate and nutrient solution provided by the invention to perform Rhododendron delavayi float seedling, the seed budding is neat, and the cultured seedling has favorable growth with no plant diseases and insect pests and strong resistance, thus being suitable for large-scale industrialized production of fine quality plantlets.

A recycling process for the demetalization of hydrocarbon oil comprises recycling the following steps: a demetalizing composition for hydrocarbon oil or an aqueous solution thereof is sufficiently mixed with hydrocarbon oil in a desired proportion, and the resultant mixture is subjected to a conventional electrically desalting process to obtain a demetalized hydrocarbon oil and an aqueous desalted solution containing the desalted metal salts; the aqueous desalted solution containing the metal salts is then sufficiently mixed with a precipitating agent in a desired proportion and is subjected to a displacement reaction, and an aqueous solution containing the demetalizing composition is recovered by separating out the residue of the metal salts produced in the displacement reaction, which is poorly soluble or insoluble in water, with a solid-liquid separator; and the recovered aqueous solution containing the demetalizing composition for hydrocarbon oil, which meets the requirements for metal ions in demetalized hydrocarbon oil, is then mixed with hydrocarbon oil in a desired proportion for a next cycle. The present invention has the following advantages such as high efficiency of demetalization, reduction of pollution to the environment and the production cost as well as the metal salt product obtained by treating and collecting the desalted residue of the metal salt.

A substrate processing apparatus (100) comprising a process tunnel (102) including a lower tunnel wall (122), an upper tunnel wall (142), and two lateral tunnel walls (128), said tunnel walls being configured to bound a process tunnel space (104) that extends in a longitudinal transport direction (7) and that is suitable for accommodating at least one substantially planar substrate (180) oriented parallel to the upper and lower tunnel walls (122, 142), the process tunnel being divided in a lower tunnel body (120) comprising the lower tunnel wall and an upper tunnel body (140) comprising the upper tunnel wall, which tunnel bodies (120, 140) are separably joinable to each other along at least one longitudinally extending join (160), such that they are mutually movable between a closed configuration in which the tunnel walls (122, 128, 42) bound the process tunnel space (104) and an open configuration that enables lateral maintenance access to an interior of the process tunnel.

The invention discloses an application of eugenol used as a main active component in preparing pesticide preventing and treating crop virosis. The experiment research shows that the eugenol provided by the invention has a very good preventing and treating function to the virosis of various crops and has wide antivirus spectra, the effective component of the eugenol of the invention is a natural, green and environment-friendly active component extracted and obtained from traditional Chinese medicines, has the preventing and treating function to the crop virosis and does not pollute the environment, and the invention takes the eugenol as the main active component to prepare pesticide with medicament forms, such as eugenol soluble liquid or eugenol microemulsion and the like, and has convenient use and storage and good stability.

Flux compositions for sintering Ni—Zn ferrite material are disclosed in the present invention, each flux composition basically and selectively has zinc oxide (ZnO), silicon dioxide (SiO₂), boric oxide (B₂O₃), bismuth trioxide (Bi₂O₃), aluminum oxide (Al₂O₃), potassium trioxide (K₂O₃), barium oxide (BaO), sodium oxide (Na₂O), calcium oxide (CaO), and magnesium oxide (MgO). Each flux composition is added into a mixture of Ni—Zn ferrite material composed of ferric oxide (Fe₂O₃), nickel oxide (NiO), zinc oxide (ZnO), cupric oxide (CuO) and cobalt oxide (CoO) and ranges from 0.05 to 10 weight percent based on the total weight of the Ni—Zn ferrite material. The flux compositions of the present invention decrease sintering temperature when the ferrite material is sintered and contain no lead (Pb) element so as to reduce toxic pollutants.

A small-scale waste processing device includes a housing, wherein a conveying cavity is provided in the housing, a screw is rotatably provided in the conveying cavity, a rotating cavity is provided in the housing, and the rotating cavity and the conveying The cavity is connected, and a rotating block is rotatably provided in the rotating cavity. A squeezing mechanism is provided in the rotating block. A first filter is fixedly arranged on the right wall of the rotating cavity. The present invention can pass kitchen wastes through Most of the water is squeezed out, and then the water in the waste is thrown out by throwing water to make the waste more dehydrated. The discharged waste water can be directly discharged to the sewer, which avoids clogging of the sewer and saves maintenance costs. The dehydrated waste passes through Grinding and squeezing makes it difficult to make full use of the packing space during the later packing process of waste materials, and at the same time avoids the leakage of waste water from the waste materials, causing pollution to the environment.

The invention discloses an antibiotic environmentally-friendly film and a production method thereof. The antibiotic environmentally-friendly film sequentially comprises a PET layer, an antibiotic layer, a PE layer and a sterilization coating layer from inside to outside, wherein the antibiotic layer is produced from polylactic acid, hydroxypropyl acrylate, acryloyl chloride, trifluoropropylmethyldichlorosilane, vinyltriisopropoxysilane, hydroxypropyl methyl cellulose, chitosan, eugenol, polyvinyl alcohol, an emulsifier, an initiator and deionized water, and the sterilization coating layer is produced from ethanol, polyethylene glycol, deionized water, cinnamaldehyde, beta-cyclodextrin, a titanate coupling agent, nanometer titanium dioxide, organosilicone resin, a dispersant and an antifoaming agent. The antibiotic environmentally-friendly film produced in the invention has the advantages of good sterilization and antivirus effects, good durability, long service life and no pollution to environment.

The invention provides an impact-resistant and anti-wear agent for hydraulic concrete, which mainly comprises a nano material, slag, latex powder, rubber powder, a water reducing agent, fibers, an exciting agent and a defoaming agent. The impact-resistant anti-wear agent is suitable for places such as water conservancy projects, roads and airport pavements requiring high impact-resistant and anti-wear concrete, has the functions of resisting crack, reducing water, reinforcing and reducing elasticity, and excellent mixing and constructing properties. The impact-resistant and anti-wear agent has the advantages of increasing concrete impact-resistant and anti-wear properties, prolonging maintenance period and reducing maintenance cost.

The invention mainly discloses a system and method for landscape fishpond purification treatment. According to the technical scheme, the system comprises a water quality monitoring device, a water purification device and a water surface decontamination device, the water purification device comprises a shell, a water inlet pipe, an aerator pipe, a blowdown pipe and a water outlet pipe, a filtering area, an active mud area and a sterilization area are arranged in the shell from inside to outside in sequence in a nested mode, and both the water inlet pipe and the blowdown pipe are connected with the filtering area; the water outlet pipe is connected with the sterilization area, the two ends of the aerator pipe are located outside the active mud area and the shell respectively, and the water surface decontamination device comprises a collection box, a stain adsorption head and a stain adsorption pipe. The method comprises the steps of 1, installing the water purification device; 2, installing the water surface decontamination device; 3; conducting water quality detection; 4, conducting water purification; 5, conducting water surface purification; 6, conducting detection again; 7, cleaning the devices. The system is reliable in performance, water purification can be conducted automatically, water quality purification efficiency is high, treatment time and period are short, and normal operation of a fishpond system is guaranteed.