219results about How to "Solve precipitation" patented technology

A polycrystalline LiFePO4 powder with olivine structure is prepared from Fe(Ac)2, FeSO4.7H2O, Ba(Ac)2 and organic acid by the sol-gel method. Its advantages are short period, low burning temp., low energy consumption, high purity and electric conductivity, and high granularity uniformity. It is suitable for making Li-ion battery.

A high-hydrophobicity, heat conductivity and adhesivity pigment of interface is prepared by taking methyl chloroform and butanone as medium, liquid-phase treating ordinary carbon black by silicone oil to hydrophobic activate, forming coating into dense methyl surface by polyester modified dimethylsilicone and agitation dispersing by supersonic homogenizer. The formed coating (2) is three-dimensional cross-linking network of cured polyphenylene methyl resin, which contains nanometer carbon black and silicon dioxide, and it forms dense methyl thin layer (3) on coating surface. It can be used to treat heat exchanger surface (1) of indoor apparatus and outer tube fin of household air conditioner. It has good hardness and is non- toxic.

The invention discloses a compound water soluble fertilizer used for citrus crops, a preparation method and an application method. The compound water soluble fertilizer used for citrus crops is mainly used in plant nutrition field, and comprises the following components: an amino acid raw material, macroelements P and K, secondary elements Mg and Ca, trace elements Fe, Mn, Zn, B, Mo and Cu, a beneficial element Si, an auxiliary agent, a PH conditioning agent and an aqueous solution. The preparation method is characterized in that composite amino acid chelates Mn, Fe, Cu, Mg, Ca and Zn at normal temperature of 15-35 DEG C and prepares the water soluble fertilizer with six metallic elements, the reasonable fertilizing can be carried out at different growth period of the crops, the balance supplement of a plurality of nutrient elements required by citrus crops can be realized, and the output and quality of the citrus crops can be increased.

The invention provides a secondary hole cleaning device and method of the bottom of a cast-in-situ bored pile. The secondary hole cleaning device comprises an annular nozzle, a water guide pipe, a pump, a medium tank, an air compressor and an air pipe; the air pipe and the water guide pipe are fixedly connected with a reinforcement cage along the length direction of the reinforcement cage; one end of the air pipe is connected with the air compressor; the other end of the air pipe is inserted into the bottom of a bore hole; one end of the pump is connected with the medium tank; the other end of the pump is connected with one end of the water guide pipe; the other end of the water guide pipe is connected with the annual nozzle which is fixed at the bottom of the reinforcement cage. According to the secondary hole cleaning device and method of the bottom of the cast-in-situ bored pile, the working principle of underwater concrete casting is utilized, the technical method that sediment cannot be produced at the bottom of the bore hole before first concrete is cast is adopted, and accordingly sediment is not produced at the bottom of the cast-in-situ bored pile in the end and the concept that slurry needs to be replaced in the former secondary hole cleaning is changed; the problem that a waiting time is required to form the sediment from the secondary hole cleaning to the concrete casting formerly is solved; the quality of the cast concrete pile is easy to guarantee.

The invention discloses a magnetorheological energy absorber with failure-safety performance. The magnetorheological energy absorber with the failure-safety performance is characterized in that an inner cylinder body and an outer cylinder body form a sleeve barrel structure with two sealed ends, a piston is arranged inside the inner cylinder body, a hollow cavity of the inner cavity body is an inner cavity, an annular outer cavity is formed between the inner cylinder body and the outer cylinder body, the piston divides the inner cavity into a front cavity and a rear cavity, the lateral walls, located at the front end and the rear end of the inner cavity, of the front cavity and the rear cavity are respectively provided with a liquid flowing hole, the inner cavity and the outer cavity are communicated through the liquid flowing holes, magnetorheological liquid fills the inner cavity and the outer cavity, an annular groove is formed in the outer lateral wall of the inner cylinder body and / or the inner lateral wall of the outer cylinder body, electromagnetic coils and permanent magnets are arranged inside the annular groove, and a magnetic field produced by the permanent magnets and the electromagnetic coils is cut by two sides of the inner cylinder body and the two sides of the groove to effectively surround the outer cavity and the outer cylinder body, so that a closed magnetic flow loop is formed. The magnetorheological energy absorber and a semi-active control system of the magnetorheological energy absorber provide the reliable failure-safety performance and effectively widen application occasions.

The pectin grain containing milk beverage contains milk product 30-60 weight portions, pectin grain 1-20 weight portions, sugar 4.0-15 weight portions, stabilizer 0.1-1.0 weight portions, edible essence 0.05-0.3 weight portions except water. The pectin grain is obtained through inoculating pyracetic bacillus to fruit juice, fermenting culture, taking upper fiber and crushing. The present invention provides the production of milk beverage containing pectin grain, especially coconut pectin grain.

The invention discloses a wine-making preparation method adopting litchi fermentation. The method comprises the following steps: adopting pollution-free excellent quality litchi pulp to make fruit juice concentrate by means of a low-temperature ice-crystal method or a membrane concentration method, and blending the fruit juice concentrate with high dry wine; adding highly concentrated fruit juice frozen by the low-temperature ice-crystal method or the membrane concentration method into the mixture to keep the typical aroma of litchi fruit wine; adopting yeast strain, lactic acid strain and acetic acid strain to carry out multi-strain coordinated fermentation and adjusting the fermentation conditions; accelerating fermentation and conversion by fruit sugar and glucose cooled after high-temperature acid conversion of sucrose to improve the quality of fermented wine liquid; making use of ultra low temperature cryoprecipitation and triple filtration sterilization to solve the problem of deposition of products during storage and transportation; and adopting non-thermal sterilization filtration and concentration membrane technology to avoid the influence on fruit wine quality caused by thermal sterilization. The wine-making preparation method can obtain a natural litchi fermented wine product with palateful quality.

The invention discloses an all-shearing type magneto-rheological damper. The all-shearing type magneto-rheological damper is characterized by comprising an outer cylinder, an inner cylinder and a ball screw pair, wherein the inner cylinder is coaxially arranged with the outer cylinder, shearing discs are fixed by the ball screw pair, the inner wall of the inner cylinder is provided with electromagnetic coils and sharing ring sets corresponding to the shearing discs one by one, magneto-rheological liquid is filled in a cavity of the inner cylinder, at least one electromagnetic coil is arranged between adjacent shearing rings fixed on the inner wall of the inner cylinder, and the shearing discs, the shearing rings and the inner cylinder form a closed flux loop. On the premise of keeping same external size and energy consumption of a magneto-rheological damper, null-field viscous damping of the magneto-rheological damper is reduced, controllable damping ratio range is enlarged, and the all-shearing type magneto-rheological damper is added with potential for application to a high-speed impact / vibration control system. Besides, service efficiency of the magneto-rheological liquid in the magneto-rheological damper is improved, and cost of the magneto-rheological damper is effectively reduced.

The invention discloses an energy feedback type self-sensing magnetorheological damper. The energy feedback type self-sensing magnetorheological damper is characterized by comprising a pure shearing type magnetorheological damper body, an energy feedback mechanism used for converting mechanical energy into electric energy, and a rotating speed sensor, the pure shearing type magnetorheological damper body converts linear movement of a linear magnetorheological damper piston rod into rotational movement by means of a ball screw pair mechanism, the shearing mode which is one of the working modes of magnetorheological liquid is effectively utilized, and stepless damping force controllability of the magnetorheological damper is achieved by arranging a shearing disc, a shearing ring and a corresponding electromagnetic coil. According to the energy feedback type self-sensing magnetorheological damper, by means of the shearing mode of the magnetorheological liquid, the range of dynamic damping ratios is effectively widened, and a more effective control range is provided for a high-speed impact and low-speed vibration control system; both the electric energy feedback performance and movement state self-sensing performance are realized, energy supply of a semi-active magnetorheological damper and the control system of the semi-active magnetorheological damper is achieved, and the problems, related to installation space, system weight, cost and reliability, caused by additional installation of a state feedback sensor are solved.

The invention relates to a common yam rhizome dew beverage, which is prepared from fresh common yam rhizome serving as a main raw material. The beverage consists of the following components in part by weight: 8 to 20 parts of common yam rhizome, 0.001 to 0.005 part of thermo-stable amylase, 5 to 8 parts of sweetener, 0.10 to 0.15 part of vitamin C, 0.10 to 0.38 part of stabilizer, 0.06 to 0.16 part of acidity regulator and 71.3 to 86.7 parts of purified water. A production method comprises the following steps of: protecting color, coarsely grinding, cooking, pulping, raising the temperature for gelatinization, performing enzymolysis, inactivating at a high temperature, blending, homogenizing, degassing and the like. Common yam rhizome dew furthest keeps the specific active ingredients and flavor of the common yam rhizome, makes the common yam rhizome more easily absorbed and utilized by human bodies, and increases the nutritional value of the common yam rhizome; and the beverage has fragrant and mellow mouthfeel, is tasty and refreshing and has the effects of quenching thirst, moistening the lung, invigorating the spleen, protecting the liver, disintoxicating, tonifying middle-jiao and qi, nourishing the heart, soothing the nerves, preventing atherosclerosis, building the bodies, beautifying and delaying senility. The production method ensures that the common yam rhizome dew beverage is not browned, precipitated and demixed.

The invention discloses a light-emitting diode (LED). The LED at least comprises a bracket, an LED chip and a light-emitting layer arranged on the LED chip and is characterized in that: the light-emitting layer is a mixed system of one or more kinds of fluorescent powder capable of sending out light with various colors and an adhesive requiring double curing; and the adhesive is an adhesive of a double curing system consisting of ultraviolet curing-thermocuring, ultraviolet curing-microwave curing, ultraviolet curing-anaerobic curing or ultraviolet curing-electron beam curing. The light-emitting layer solves the problems of colloid solidification and fluorescent powder sedimentation in the process of coating the fluorescent powder, so the LED has the advantages of improving the uniformity of the fluorescent powder on the chip, enhancing the adhesive property between the light-emitting layer and the chip and shortening the curing time of the light-emitting layer.

A disclosed water quality modified is composed of disodium ethylene diamine tetraacetate, citric acid, potassium monopersulfate triple salt, polyferric sulfate and phytic acid according to a weight ratio. The water quality modifier is good in water solubility, helps to purify water, improve water quality, reduce the mortality and elimination rate and increase breeding income, is widely applicable to modification on poultry and livestock drinking water and aquaculture animal water source.

The invention provides dry spraying decorative paper for manufacturing a wood floor and a manufacturing technology thereof. The dry spraying decorative paper comprises printing base paper, wherein the upper surface of the printing base paper is printed with decorative patterns, the upper surface of the printing base paper is coated with an attachment glue layer, the lower surface of the printing base paper is coated with a binding glue layer which is used for binding a floor substrate layer, a wear-proof material layer is formed on the upper surface of the attachment glue layer by a dry powder spraying mode, and a cover glue layer is repeatedly coated on the upper surface of the wear-proof material layer. The dry spraying decorative paper radically solves the problems of distribution uniformity of powder particles, attachment ability, resin coating and melting effect, flocculation and deposition in a use process, not only ensures the wear-proof revolution stability, but also ensures the definition of a woody panel simultaneously. In addition, the scattered wear-proof powder particles also can be recovered and recycled so as to reduce the waste and save the cost.

The invention discloses a saccharomyces cerevisiae strain, which is preserved in the China General Microbiological Culture Collection Center (CGMCC), and the preservation number is CGMCC No. 3003. The saccharomyces cerevisiae strain can be efficiently applied to the brewing process of yellow wine or Chinese distillate spirits, in particular to the brewage of the purple yarn yellow wine. By adopting the strain and the application process of the invention, yellow wine or Chinese distillate spirits with pure fragrance, good taste, little sedimentation and abundant nutritive value can be obtained.

The invention discloses a packaging method for a silicon substrate LED. The method comprises: pointing glue, packing the LED chip in the reflective cup with the transparent colloid mixed with the fluorescent powder; baking and solidifying: placing the LED chip with the glue in the solidifying oven for the solidifying and molding; while processing the solidifying, firstly reversely placing the LED chip with the glue, and then placing the chip in the solidifying oven for the solidifying and molding. The method is used for solidifying the fluorescent powder at the upper position of the lighting chip to sufficiently use the fluorescent powder to obtain a great effect of white light for the LED lamp under the situation of not increasing the fluorescent powder on the silicon substrate LED chip. The invention is suitable for the thick LED chip with the silicon substrate, which has the advantages of lower cost, greater effect, simpler procedure, and lower defective rate.

The invention discloses probiotic milk and a preparation method thereof. The method comprises the steps that: (1) a fermented milk base material is mixed with a nutrition enhancer, such that a composition A is obtained; milk is mixed with an acidity regulating agent, and homogenization, sterilization, and cooling are carried out, such that a composition B is obtained; and (2) the composition A and the composition B are mixed and uniformly stirred, such that the probiotic milk is obtained. The invention also discloses the probiotic milk prepared with the above method. The probiotic milk has the advantages of low fermentation agent cost and high and stable probiotic content. The probiotic milk is rich in probiotic fermentation metabolic physiologically active substances, and contains mineral salt nutrition-enhancing substances.

The invention relates to environment-friendly dispersing agent for dyeing in one bath. The dispersing agent is applicable to pure chemical fiber fabric like polyester or blended fabric containing chemical fiber like polyester cotton, polyester chinlon, polyester acrylic cotton and wool polyester acrylic fiber. The dispersing agent has more protruding advantages for bathing and dyeing the blended fabric like polyester acrylic cotton and wool polyester acrylic fiber. The environment-friendly dispersing agent is characterized by being prepared from, by mass, 5%-20% of fatty alcohol-polyoxyethylene ether, 5%-20% of plant cardanol polyoxyethylene ether, 5%-10% of adsorption dispersing agent, 0.2%-1% of emulsifying thickening dispersing agent and the balance water. The environment-friendly dispersing agent for dyeing and bathing has high dispersing force on dyestuff and a high leveling property, can effectively solve the problems like color tone and color spots and solve the precipitation problem caused when the dyestuff has different kinds of iconicity at the same time. Besides, the environment-friendly dispersing agent also has a certain oil removing capability and the capability of washing a dye vat, so that multiple fiber and multiple dyestuff are smoothly subjected to one bath, time, water and power are saved, energy conservation and emission reduction are achieved, the economiceffect is effectively improved, and the energy conservation and environmental protection requirement is better met.

This invention provides a technique of coating fluorescent powder an LED chip, including following steps: (1) fixing an LED chip on a bracket bowl, at the same time, preparing a fluorescent glue with low concentration based on the proportion that the mass ratio of the glue and fluorescent powder of 15:1 to 25:1, and coating to the bowl, wherein the coating depth is 1 / 2-2 / 3 of the bowl depth; (2) roasting and solidifying; (3) preparing a fluorescent glue with normal concentration based on the proportion that the mass ratio of the glue and fluorescent powder of 4:1 to 15:1 and coating to the bowl, roasting; (4) if the coated fluorescent glue in the bowl forms a concave surface after roasting, then repeatedly processing the step (3) until the mixture of the coated glue and the fluorescent powder is level with the edge of the bowel after solidifying and with out the dent. This invention adopts the technical method of multiple coating, which effectively solves influences such as the fluorescent powder deposition and aggregation in the solidifying process after coating the fluorescent powder about one time, improves parameters of the LED using the fluorescent powder, such as the color temperature evenness, color rendering index and color evenness and so on.

The invention discloses a preparation method and a quality control method of coptis root detoxifcation soup particles. The preparation method comprises decocting coptis root, radix scutellariae, phellodendron and cape jasmine decoction pieces in water 2 times, filtering the decoctions, merging the filtrate, carrying out vacuum concentration on the filtrate, adding beta-cyclodextrin into the filtrate, carrying out stirring to obtain clear paste, carrying out spray drying on the clear paste, and carrying out dry method granulation to obtain the coptis root detoxifcation soup particles. The quality control method comprises thin layer qualitative identification and HPLC content determination. The preparation method effectively solves the problem that the coptis root detoxifcation soup produces precipitates in condensation, maximumly retains effective components in raw materials, and can be widely used in massive production. The quality control method realizes simple, comprehensive and effective control of coptis root detoxifcation soup particle quality and can be used in daily quality control.

The invention provides a resin composition for filling a unit plate type ballastless track convex baffling platform, a preparation method and a using method thereof. The resin composition comprises a component A and a component B, and calculated according to parts by weight, the component A comprises: 100 parts of polyolefin polyhydric alcohol, 10 to 100 parts of filler, 10 to 80 parts of plasticizer, 1 to 10 parts of thixotropic agent, 5 to 20 parts of chain extender, 0 to 5 parts of antiager and 0 to 2 parts of defoaming agent; and the component B comprises 5 to 50 parts of isocyanate. The resin composition can have the function of positioning the track plate and transferring load with the convex baffling platform after being cured. The resin composition adopts the polyolefin polyhydric alcohol as main body material, can improve the waterproof, low-temperature resistant and antiaging characteristics of the polyurethane material and prolongs the service life of the product.

The invention belongs to the technical field of a paddy planting fertilizer and specifically relates to a selenium-rich cadmium-reducing leaf fertilizer special for paddy. The selenium-rich cadmium-reducing leaf fertilizer special for paddy is composed of citric acid monohydrate, sodium selenite, urea, potassium chloride, monopotassium phosphate, soluble microelement compound, momordica grosvenori and herb of alligator alternanthera. The leaf fertilizer can increase the absorbing conversion rate of the paddy for selenium, has an excellent cadmium-impeding performance, is rich in nutrition and is easily absorbed. After the fertilizer is applied to the paddy, the selenium-rich cadmium-reducing efficiency of the leaf fertilizer is higher, the effect is stable and the yield of the paddy is high.

The invention discloses an environment-friendly waterborne coating used for dip coating of track shoe. The environment-friendly waterborne coating is prepared from the following raw materials in percentages by weight: 35 to 50% of a waterborne acrylic modified epoxy emulsion, 0.25 to 0.75% of an antifoaming agent, 1.5 to 3.25% of a dispersing agent, 18 to 28% of deionized water, 0.38 to 0.93% of a neutralizing agent, 0.21 to 0.79% of a leveling and wetting agent, 1.51 to 2.39% of a flash-rust inhibitor, 0.35 to 1.23% of carbon black, 5.23 to 8.36% of iron black, 6.43 to 8.07% of barium sulfate, 6.22 to 8.69% of composite zinc phosphate, 4.31 to 5.57% of a thixotropic anti-settling agent, 3.43 to 5.07% of aluminum tripolyphosphate, 2.43 to 3.27% of talcum powder, 0.33 to 0.67% of matting powder and 0.32 to 0.58% of a thickening agent. The waterborne coating prepared by using the method provided by the invention has the following advantages: the VOC is no more than 85 g / L; the odor is low; the environment is avoided from pollution; meanwhile, the waterborne coating has matte, water resistance, salt fog resistance, excellent surface drying time, stable heat storage performance, and excellent coating film mechanical strength and impact resistance.

The invention discloses an arsenic fixing and copper extracting method of high-arsenic copper sulphide ore, which is used for fixing arsenic and extracting copper from the high-arsenic copper sulphideore, especially the copper ore using tennatite and enargite as main bodies. According to the arsenic fixing and copper extracting method, the dissolution behavior of the tennatite and the enargite ina sulfuric acid system is fully used, and harmful arsenic is easy to oxidize in the conditions of high temperature and oxygen enrichment so as to generate iron arsenate with stable chemical characteristics; the arsenic fixing and copper extracting method is developed on the basis of a hot pressing oxidation technique and a Fe / As matching principle; and a closed-loop water circulation wet processis adopted by the method, no waste water and exhaust gas are discharged, As in raw materials exists in tailings in the arsenide-iron arsenate state with the optimal chemical stability, and other Fe and S which has potential impact on the environment exists in the tailings in the stable state of calcium sulfate, ferric sulphate and the like. To sum up, the application field of the hot pressing oxidation technique is extended by the method, and a novel process with cleanness and environmental friendliness is provided for the utilization of resources of the high-arsenic copper sulphide ore whichis difficult to process.

The invention discloses a beautifying and nourishing beverage and a production method thereof. The beverage is prepared from raw materials for tonifying qi, supplementing blood and resisting senility, such as tomato, red jujube, longan pulp, tremella, Chinese wolfberry, honey and the like in a certain weight ratio. The beverage is prepared by precooking the raw materials, pulping, filtering, mixing, homogenizing, sterilizing and packaging. The beautifying and nourishing beverage has the aroma of the longan pulp, red jujube, honey and the like, suitable acidity and sweetness, smooth taste and orange red color, is rich in various nutrients, contains components which have the effects of resisting oxidation and free radial damage, promoting cell proliferation, improving the immunity of organism and enhancing hemopoiesis and are all from natural plant components, and does not contain any chemical food additive such as a preservative, a colorant and the like, so the beverage is a natural nutritional health-care beverage which has the effects of resisting the senility and cancer, beautifying and whitening. The beautifying and nourishing beverage prepared by the method can well solve the frequent demixing or sedimentation problems of products within shelf life in similar beverage products.

The invention discloses a manufacturing method of dairy produce with natural juice, which comprises the following steps: preparing fresh milk and juice, melting rapidly, sterilizing, canning.

The present invention discloses one kind of natural crab cream sauce and its preparation process. The natural crab cream sauce is prepared with egg 10-60 wt%, sea food material 5-20 wt%, tomato sauce 3-20 wt%, crab cream as scent base 1-5 wt%, odorant 3-20 wt%, seasoning 5-20 wt%, modified starch 1-5 wt%, thickener 0.1-1 wt%, food color 0.01-3 wt%, and water 10-50 wt%. Its preparation process includes the following steps: 1. cooking egg at 100-120 deg.c, cooling and grinding to obtain supplementary material I; 2. cooking sea food material at 100-120 deg.c, cooling and grinding to obtain supplementary material II; 3. mixing the supplementary material I, the supplementary material II and tomato sauce, 40 mesh sieving, adding the other materials and homogenizing at 20-40 MPa; and 5. packing and radiation sterilizing.

The invention belongs to the technical field of fertilizer production. The invention particularly relates to a method for producing a liquid fertilizer by utilizing corn steep liquor. The method comprises the following steps: by taking corn steep liquor as a main raw material, adding thiourea production residues, mixing, settling to obtain a supernatant, sequentially carrying out enzymolysis on macromolecular protein and phytase in the corn steep liquor by using acid protease and phytase, and finally sequentially chelating medium trace elements to obtain the medium trace element liquid fertilizer with comprehensive nutrition. The liquid fertilizer disclosed by the invention is simple and convenient in production process, stable in product quality, safe and efficient, the problem of resource utilization of corn steep liquor and thiourea production residues is solved, the liquid fertilizer suitable for commercial crops is also produced, and the liquid fertilizer has good social benefits,environmental benefits and economic benefits.

The invention provides paint capable of shielding a chromatic circle inductor and a process for coating the chromatic circle inductor. The paint capable of shielding the chromatic circle inductor is characterized by comprising the following materials in percentage by mass: 25-50% of chromatic circle inductor paint, 20-55% of soft magnetic ferrite magnetic powder, 10-30% of liquid curing agent and 10-30% of diluent; the manufacturing method for the paint capable of shielding the chromatic circle inductor and the process for coating the chromatic circle inductor comprise the steps of coating for two times by using the paint capable of shielding chromatic circle inductor, and then coating for two times by using the paint capable of shielding chromatic circle inductor. The paint capable of shielding the chromatic circle inductor and the process for coating the chromatic circle inductor have the advantages that interference on other parts caused by leakage flux generated in operating of the chromatic circle inductor can be effectively shielded; the cost of the coating can be greatly reduced; the inductance value can be increased; the self-resonance frequency is increased; and the paint is mainly suitable for packaging of the chromatic circle inductor.

The invention relates to a beverage stabilizer formula, in particular to a stabilizer of a starch or fiber beverage, which is characterized by comprising main ingredients by the weight percentages: 30 to 60 percent of microcrystalline cellulose, 10 to 40 percent of sodium carboxymethyl starch, 10 to 30 percent of sodium carboxymethyl cellulose and comprising auxiliary ingredients by the weight percentages: 0 to 6 percent of carrageenin, 0 to 6 percent of guar gum, 0 to 6 percent of monoglyceride and 0 to 4 percent of gellan gum. The product is compounded to have the addition weight from 0.3 to 0.6 percent, is mixed with 40 to 60 times of hot water to be dissolved at a temperature of 70 to 90 DEG C and is used after being emulsified for 10 to 20 minutes. The invention can effectively solve the problem of precipitation of the starch or fiber beverage, is free from elutriation and gelatum and has wide applicability and long service life.

The invention discloses a device for culturing a biological flocculating constituent by use of the solid waste of aquaculture. The device consists of a culture barrel, a feed pump, a floating ball liquid-level switch, a stirrer and a dosing pump, and is characterized in that: a feed port and a dosing port are arranged at the top of the culture barrel; the feed port is connected with the feed pump; the dosing port is connected with the dosing pump; a discharge port is arranged at the 0.8m-deep position of the side wall of the culture barrel; the stirrer is mounted at the top of the culture barrel; the opening of the feed pump is controlled by the floating ball liquid-level switch; the dosing pump is connected with a plastic barrel; an organic carbon source is reserved in the plastic barrel; the opening of the dosing pump is controlled by the floating ball liquid-level switch; a transmission shaft of the stirrer is a hollow shaft; an air leading-in hole vertical to the central axis of the transmission shaft is drilled below the joint between the transmission shaft of the stirrer and a motor, and the hole is communicated with a central axis hole; an air leading-out hole vertical to the central axis of the transmission shaft is drilled below the joint between the transmission shaft and a stirring impeller, and the hole is communicated with the central axis hole; and the motor of the stirrer is a variable-speed motor which can adjust the mixing strength.