125results about How to "Reduce usage ratio" patented technology

The invention discloses a digestion method of soil metal elements. The method comprises the following steps: (1) weighing a soil sample; (2) preparing a mixed acid A which has a volume ratio of nitric acid to hydrofluoric acid to perchloric acid of 6-10:4-5:2; (3) preparing a mixed acid B which has a volume ratio of the hydrofluoric acid to perchloric acid of 8-10:1; (4) adding the mixed acid A to a digestion cup to decompose soil; (5) adding the mixed acid B to escape silicon; (6) removing acid: washing off acid globules suspending on the cup wall with 0.2-5% diluted hydrochloric acid or diluted nitric acid, controlling temperature of an electric heating plate at 110-130 DEG C and distilling to dryness; and (7) make constant volume: adding the diluted nitric acid to dissolve residue in the digestion cup, and adding the diluted nitric acid of the same concentration to the fixed volume for measurement. The method has high efficiency and improved safety. The method is applicable to measurement of metal elements such as Cu, Zn, Fe, Mn, Ca, Mg, Ni, Pb, Cd and the like in soil and produces accurate and reliable determination results.

The invention discloses a novel environment-friendly reagent for reducing leaching concentration of various heavy metals. The formula of the environment-friendly reagent comprises 0-30wt% of sodium polysulfide, 1-25wt% of sodium silicate, 0-15wt% of organic sulfur TMT-15, 0-20wt% of hydrazine hydrate, 1-20wt% of phosphate, 1-10wt% of sodium sulphide, 0-15wt% of ferrous sulfate, 0-5% of potassium permanganate, 0-5wt% of citric acid and 0-5wt% of edetic acid (EDTA). The novel environment-friendly reagent can be applied to ex-situ remediation of the traditional hazardous waste containing the heavy metals, and can also be applied to in-situ remediation of pollution site soil and underground water containing the heavy metals.

The invention discloses a herbicide emulsifiable concentrate extracted from chrysanthemum chrysanthemum, which is characterized in that the weight percentage of each component of the chrysanthemum chrysanthemum extract is 5%-50% of chrysanthemum chrysanthemum extract, 10%-20% of pesticide adjuvant, and 30% of solvent ~85%, the pesticide adjuvant is: Nongru No. 500: a mixed emulsifier of Tween-80=1: 1~3 (weight ratio); said Nongru No. 500 is calcium dodecylbenzenesulfonate, Tween -80 is ethylene oxide adduct of sorbitan monooleate; solvent: xylene. The invention also discloses a preparation process of the herbicide emulsifiable concentrate extracted from the chrysanthemum chrysanthemum. The herbicide emulsifiable concentrate has a good control effect on weeds such as crabgrass, retroverted amaranthus, barnyardgrass, and quinoa. In the case of the same control effect on the four tested weeds, the dosage of the extract of the chrysanthemum was 40-50 times lower than that without processing.

The invention relates to a high-quality enzymolysis-fermented bean pulp as well as a preparation method and application thereof. The preparation method comprises the steps of crushing peeled bean pulp, sieving by virtue of an 80-mesh sieve, carrying out primary enzymolysis by virtue of alpha-galactosidase and glucoamylase, carrying out secondary enzymolysis by virtue of papain, carrying out enzyme deactivation, inoculating a compound strain of saccharomycetes, bacillus and lactic acid bacteria, sequentially carrying out aerobic fermentation and anaerobic fermentation to obtain a finished product, and carrying out spray drying on the finished product, so as to preserve active components to the greatest extent. The prepared enzymolysis-fermented bean pulp has the special fermentation flavor, the protein content is about 55%, the acid soluble protein content is more than 50%, antinutritional factors such as antigens are fundamentally eliminated, the components are stable, and the enzymolysis-fermented bean pulp has the characteristics of strong hydrophily, high water holding ratio and strong palatability and has an obviously food calling effect on aquatic animals; and the enzymolysis-fermented bean pulp is rich in functional small peptides, probiotics and metabolite of the probiotics, beneficial to the nutrient balance of intestinal tract of bred animals and is suitable for being added into feeds of piglets, poultries, pets, aquatic products and the like, the problem of trophic diarherra of the animals is solved, and the suggested use ratio is 2%-5%.

The invention relates to an anthelmintic drug for livestock, and particularly relates to albendazole / ivermectin powder for livestock, which is convenient to use and remarkable in drug effect. Every 100g of albendazole / ivermectin powder comprises 5-15g of albendazole, 0.1-0.2g of ivermectin, 10-20g of sodium chloride, 5-10g of sodium citrate, 2-4g of sodium carboxymethyl cellulose, 2-4g of flavoring agent and the balance of other acceptable auxiliary material, wherein the other auxiliary material is soluble starch or microcrystalline cellulose. The drug provided by the invention is a dry suspension, can be proportionally added in a drinking fountain directly for use, and facilitates the all-round dosing in a large-size livestock farm; the drug avoids the toxic and side effect caused by uneven feed mixing and is more convenient to use; and the drug effect is remarkably enhanced, and the cost is obviously lowered in comparison with the prior art, thereby ensuring that the drug has wide application prospects.

The invention provides a pretreatment method for a chromium powder ore used for smelting production of a ferrochrome alloy. The method comprises the steps of 1) mixing the chromium powder ore with a fluxing agent, a reducing agent and a fuel to obtain a mixture; and 2) sintering the mixture to obtain a sintered material. The method is short in process flow and low in sintering cost and is simple and practicable, and production of powder ore pollutions is not easy, so that relatively cheap powder chromium ore can be fully used, smelting consumption can be decreased greatly, and further smelting cost of the ferrochrome is reduced. The sintered material obtained by the sintering treatment method can be directly introduced into an ore smelting electric arc furnace for smelting after smashing. The method can enhance reducibility of furnace charging materials, reduce energy consumption and decrease usage proportion of other auxiliary materials such as coke, silica and the like in the smelting furnace charging materials. At the same time, possibility of reversing materials is greatly decreased, production security is increased and probability of production accidents is reduced greatly.

The invention discloses a Chinese style efficient flue-cured tobacco atomizing agent and an application method thereof. The atomizing agent is prepared from, by weight, 1 part of glycerinum, 10-20 parts of propylene glycol, 30-50 parts of dipropylene glycol, 2-10 parts of sorbitol and 0.43-0.82 part of geraniol. The prepared atomizing agent is put into a pressure relief groove of an improved vacuum freeze dryer, after vacuum freeze drying treatment is conducted on flue-cured tobacco ingredient cut tobaccos, when pressure of the atomizing agent is relieved in the freeze dryer, the atomizing agent is fast sprayed to the surface of the ingredient cut tobaccos, and the cut tobaccos which return the temperature fast and are in a structural expansion state fully absorb the atomizing agent. According to the flue-cured tobacco ingredient cut tobaccos treated through the atomizing agent, the problem that the glycerinum atomizing agent is difficult for the cut tobaccos to absorb under conventional conditions, and the defect that traditional Chinese style flue-cured tobaccos cannot generate smoke when applied to a smoking set having the function of heating without combustion is overcome. TheChinese style flue-cured tobaccos can generate a great deal of smoke when applied to the smoking set having the function of heating without combustion and volatilize tobacco fragrance, and good sensual pleasures are brought to a user.

The invention discloses a no carbon required paper microcapsule and coating, and preparation methods of no carbon required paper and the microcapsule. The method of the microcapsule includes the steps: providing 3-5 parts by weight of an colorless dye and 20-40 parts by weight of a solvent oil; heating the colorless dye and the solvent oil, and dissolving to obtain a prepared chromogenic agent; adding 10-25 parts by weight of a wall material, 5-15 parts by weight of an emulsifier and the prepared chromogenic agent into 20-50 parts by weight of deionized water, and emulsifying; and after the duration of the emulsification process reaches a predetermined time, hardening the emulsified product at a predetermined rotation speed, and thus obtaining the microcapsule. Through the above way, while the microcapsule is guaranteed not to be easily broken because of extrusion or friction, the coloration density of the no carbon required paper is improved.

The invention discloses elastic corduroy fabric and a production method and application thereof. The fabric comprises warp made of pure cotton yarn or polyester cotton yarn, pile weft made of pure cotton yarn or polyester cotton yarn, and ground weft made of covered spandex yarn containing superfine acrylic staple fibers, flat section viscose staple fibers and round section viscose staple fibers. The fabric with front pile cut and back fleece is more than 0.70 in CLO value. Non-ironing performance of autumn and winter pants made of the elastic corduroy fabric is above level 3.5, and fleece retention rate of the same is above level 4.

The invention discloses a polyurethane heat insulation aluminum alloy sectional material, which comprises a first inner sectional material, a second inner sectional material and a polyurethane heat insulation material, wherein the polyurethane heat insulation material is arranged between the first inner sectional material and the second sectional material; the polyurethane heat insulation material, the first inner sectional material and the second inner sectional material form a sectional material inner core of an integral structure through casting foaming; and a second outer sectional material and a second outer sectional material are arranged at the two sides of the sectional material inner core through rolling pressing. On the other hand, the invention discloses a manufacturing process of the polyurethane heat insulation aluminum alloy sectional material. The polyurethane heat insulation aluminum alloy sectional material has the advantages of low linear heat conduction coefficient, good material U value, good bending and tensile strength, light weight, corrosion resistance and good heat insulation performance.

The invention discloses a powdery coating with electrostatic repellent effects. The powdery coating comprises, by mass, 60-100 parts of epoxy resin, 100-140 parts of polyester resin, 30-100 parts of afiller, 0.5-5 parts of a wrinkling agent, 0.5-3 parts of an anti-foaming agent, 0.2-2 parts of an antistatic agent, 1.0-10 parts of a pigment and 0.5-3.0 parts of a conductive material. The epoxy resin / polyester mixed resin system is used as a film forming material, an efficient conductive material is used, a conductive material use ratio is low, the conductivity is strong and a superior cost performance is obtained. The invention also discloses a preparation method of the powdery coating with electrostatic repellent effects.

The invention relates to the field of interventional medical appliances, and provides a medical stent made of a composite material. The material comprises a metal material (100), a degradable polymer material (201) and a medicine (301), and is characterized in that the metal material (100) and the degradable polymer material (201) are compounded together to furthest reduce the proportion of metal, so that the stent can meet the requirements of flexibility and supporting performance, and can reduce the phenomenon of flaking in the process of completely degrading the degradable stent; the medicine (301) can be compounded with the metal material (100) of the stent through the degradable polymer material (201), and is used for reducing inflammatory response, restenosis and thrombus when the stent is implanted.

The invention relates to a method for preparing a cellulose filled composite material and belongs to the technical field of composite material preparation. The method comprises the following steps: weighing 1,000-1,100 weight parts of raw material, namely cellulose; drying for 3 hours until the mass percentage of water is less than 1 percent; weighing 60 to 80 weight parts of polyolefin, 5 to 15 weight parts of coupling agent, 5 to 15 weight parts of lubricating agent, 5 to 15 weight parts of impact resistant modifier and 5 to 15 weight parts of dispersing agent; fully mixing raw materials, and processing by using an extruder; and cooling by using a cooling tank, cutting the material to have the required shape, and drying. The prepared composite material has high mechanical properties and thermoplastic property. The composite material can be used for manufacturing various structural products; and the products have different shapes, such as office supplies, living goods (such as plastic basins, doors and windows and rail fences), crossbeams, bearing building materials, electronic product insulating shells, parts in the automobile industry, and interior decoration parts in the aviation industry.

The invention discloses a power dispatching prediction method based on three-public dispatching and economic dispatching. The power dispatching prediction method includes: Dividing the total requiredelectric quantity into planned partial generating capacity and market partial generating capacity, and respectively determining planned partial predicted generating capacity and predicted installed capacity of each power supply by utilizing the state information and the planned partial generating capacity of each power supply so as to determine the market partial predicted installed capacity; Anddetermining the range of the market part prediction hour power generation amount of each power supply according to the constraint condition, determining the lowest power consumption cost by using themarket part prediction hour power generation amount and the prediction hour market electricity price of each power supply within the range, and taking the prediction power generation amount and the installed capacity of each power supply as power dispatching prediction results. In a changeable marketization power transaction environment, the future power dispatching scheme can be reasonably predicted and planned, so that the technical purposes of optimizing the power supply structure, realizing low-carbon transformation of a power system, promoting development of clean energy and the like areachieved.

The invention discloses a novel baking-free brick. The novel baking-free brick is prepared from the following raw materials in parts by weight: 10 to 20 parts of coal ash, 25 to 35 parts of building waste, 20 to 40 parts of cement, 8 to 17 part of oil field sludge, 5 to 15 parts of river sand, 7 to 13 parts of blast furnace slag, 15 to 22 parts of aggregate, 6 to 13 parts of quick lime, 3 to 7 parts of phosphogypsum, 1 to 3 parts of activating agent and a proper amount of water. The novel baking-free brick is wide in source, is low-cost, has high compression strength, and is corrosion-resistant; the use ratio of the river sand is lowered, waste is utilized fully, energy is saved, and environment is protected.

It is an object of the present invention to provide a method of manufacturing a pneumatic tire capable of releasing the static charge of a vehicle to a road surface. A pneumatic tire manufacturing method for manufacturing a pneumatic tire in which a tread portion includes: an electrically conductive inner conductive portion which conducts with a rim when the rim is assembled; and an annular cap rubber portion thereof, in which The peripheral surface is in contact with the inner conductive part and its outer peripheral surface is in contact with the road surface. The manufacturing method includes a cap rubber forming step for forming a cylindrical unvulcanized cap rubber by helically winding a band-shaped unvulcanized rubber strip 28 around the central axis of a substantially cylindrical wound body 23 part, wherein the cover rubber forming step includes a simultaneous winding step for simultaneously winding the non-conductive rubber strip 28A and the conductive rubber strip around the body to be wound by using the applicators 24A and 24B which guide the rubber strips 28A and 28B with 28B.

The invention discloses a light guiding system, a side-inlet type backlight module and a liquid crystal display. The light guiding system comprises an ambient light collection system, a plurality of light guiding devices and a plurality of light scattering devices. The ambient light collection system faces ambient light and is used for absorbing the ambient light to generate absorbing light. Every light guiding device is provided with a light inlet end and a light outlet end, the light outlet end is close to a light inlet side of a light guiding plate, the light inlet end is close to the ambient light collection system, and the absorbed light enters into the light inlet end and is transmitted to the light outlet end to form backlight light source. Every light scattering device which is arranged between the light outlet end and the light inlet side is used for enlarging the beam angle of light beam emitted from the light outlet end. According to the light guiding system, the side-inlet type backlight module and the liquid crystal display, the light guiding system uses the light scattering device for enlarging the beam angle of light beam emitted from the light outlet end, so that the phenomenon of uneven brightness of the light beam emitted from the light outlet end is improved and the optical taste of the side-entering type backlight module is improved.

The invention discloses a task execution method and device and a readable storage medium, and the task execution method comprises the steps: obtaining each first to-be-executed task corresponding to afirst tab, generating a first to-be-executed task queue corresponding to each first to-be-executed task, determining a current system load, and according to the current system load, executing each first to-be-executed task according to the queue sequence corresponding to the first to-be-executed task queue. According to the invention, the technical problem of running lag of the stock machine is solved.

A method for detecting the content of amitraz includes the following steps that firstly, an amitraz standard substance is taken, standard solutions of a series of concentrations are prepared, detection is carried out with the high performance liquid chromatography, high performance liquid chromatograms of the standard solutions of the series of concentrations are obtained, and an amitraz standard curve is obtained; secondly, a sample to be detected is taken, a sample solution is prepared, detection is carried out with the high performance liquid chromatography, and a high performance liquid chromatogram of the sample solution is obtained; thirdly, the content of amitraz in the sample to be detected is calculated with the external standard method according to the obtained high performance liquid chromatogram of the sample solution and the obtained amitraz standard curve. According to the chromatographic conditions of the high performance liquid chromatography adopted in the first step and the second step, octadecylsilane chemically bonded silica serves as a packed column, an acetonitrile-phosphoric acid solution serves as a mobile phase, the flow velocity of the mobile phase is 0.5-1.5 ml / min, the column temperature is 20-40 DEG C, and the detection wavelength is 250-350 nm. By the adoption of the high performance liquid chromatography, the method for detecting the content of amitraz is easy, convenient and fast to implement, high in university, short in peak appearance time, capable of saving time and labor, economical and environmentally friendly.

The invention relates to a dry powder gypsum mortar and a preparation method thereof, wherein the dry powder gypsum mortar comprises the following components by weight percent: 25%-40% of calcined desulfurization gypsum, desulfurization gypsum less than 10%, 3.0%-8.0% of cement, 5.0%-25% of coal ash, 1.0%-5.0% of lignocellulose, 0.5%-2.0% of inorganic gel, 0.2%-0.5% of a water retention agent, 0.1%-0.2% of a water-reducing agent, a retarding agent less than 0.5%, 0.1%-1.0% of inorganic salt, sodium hydroxide less than 1.0% and 45%-65% of dried building sand with the fineness being 2.5-0.15mm.

The invention discloses a novel biodiesel solid catalyst KF / Ca-Mg-Al-O as well as a preparation method and application thereof. The preparation method of the catalyst comprises the following steps: (1) preparing a magnesium-aluminum composite metal oxide; (2) preparing a modified catalyst carrier; and (3) preparing the catalyst. The KF / Ca-Mg-Al-O solid base catalyst is prepared through a coprecipitation method and an isopyknic impregnation method. Compared with a traditional homogeneous catalyst, the catalyst prepared through the method has the advantages of being easy to separate, high in product quality and the like in the using process; the catalyst prepared by the invention has the advantages of small alkali dissolution amount, good reusability, acid resistance, water resistance and saponification resistance in the use process. The catalyst disclosed by the invention is good in catalytic activity and less in alkali dissolution loss, and the catalyst is simple in preparation process, rich in raw materials and low in price, so that the catalyst is a solid alkali catalyst suitable for popularization and application and can be effectively applied to biodiesel preparation.

The invention provides an oil tea organic fertilizer. The organic fertilizer is prepared from the following raw materials in parts by weight: 100-150 parts of oil tea cake, 10-15 parts of vinasse, 15-20 parts of animal manure, 1-3 parts of calcium hydroxide, 2-4 parts of phosphoric acid of which the mass concentration is 30%, 5-20 parts of humic acid of which the mass concentration is 30% and 1-3 parts of microorganism added liquid. The oil tea organic fertilizer prepared by the invention uses the oil tea cake as the main raw material, and the contents of elements therein conform to the nutritional requirements for oil tea growing better; according to a preparation process of the organic fertilizer, the calcium hydroxide is used to react with fatty acid in the oil tea cake to generate fatty acid metal salt, the pH value of the fermentation material is regulated by using the phosphoric acid and the humic acid, and the microorganism is added to perform fermentation; and through the above treatment, the elements of the tea seed cake are released more sufficiently, and oil tea can achieve a better absorption effect. The oil tea organic fertilizer provided by the invention can be used with a chemical fertilizer, thereby reducing the overall consumption of the chemical fertilizer.

The invention relates to the technical field of heat-not-burn tobacco products, in particular to a method for improving absorption of a traditional tobacco leaf atomizing agent. The method comprises the following steps: preparing a cigarette atomizing agent; spraying the prepared atomizing agent for tobacco on the surfaces of tobacco leaves, and then performing ultrasonic treatment on the tobaccoleaves; feeding the tobacco leaves obtained through ultrasonic treatment into a closed container, and CO2 into the container for pressurization; introducing liquid CO2 which is enough to immerse the tobacco leaves into the container for pressurizing treatment; releasing to normal pressure, evaporating a large amount of liquid CO2 in the container, and cooling the remaining liquid CO2 to-68 DEG C or below to form dry ice; crushing the dry ice containing the tobacco leaves, feeding into an expansion tower, and heating by hot air flow to sublimate the dry ice to obtain expanded tobacco leaves; balancing and expanding the moisture of the tobacco leaves to obtain the tobacco leaves fully absorbing the atomizing agent. Through CO2 impregnation and expansion processes, the depth of the atomizingagent immersed into the tobacco leaves is increased, the remaining amount of the atomizing agent in the tobacco leaves is reserved to the maximum extent, and the smoke amount and the smoke uniformityin the smoking process are guaranteed.

The invention discloses an energy-saving control method of a vehicle air conditioner. The energy-saving control method includes the steps that when the air conditioner starting is detected, an inner and outer circulation air door of the air conditioner is switched to an inner circulation air door; a humiture value in a vehicle is detected to judge whether the humiture value is less than a first preset value or not, if yes, the inner and outer circulation air door is stepped to the inner circulation air door of the air conditioner by the specified amount, and if no, the inner circulation air door is stepped to an outer circulation air door of the air conditioner by the specified amount. The invention further relates an energy-saving control device of the vehicle air conditioner. According to the energy-saving control method and device of the vehicle air conditioner, on the premise of ensuring the heating effect, inner circulation is used as much as possible, the using ratio of outer circulation is lowered, and then heating power of the air conditioner is lowered and the loss of the electric quantity of a vehicle is reduced.

The invention discloses mature river crab feed which comprises the following components in percentage by weight: 25-34% of fish meal, 30-35% of soybean meal, 1-5% of cottonseed meal, 21% of corn starch, 1.4% of fish oil, 2.4% of soybean oil, 0.5% of soya lecithin, 0.5% of cholesterol, 3% of various vitamins, 2% of various minerals, 0.5% of choline chloride, 2% of an adhesive and 1.7% of wheat bran. The cottonseed meal and the soybean meal are utilized for partially replacing fish meal, so that the cost of the mature river crab feed is reduced; the feeding effect of the mature river crab feed provided by the invention is the same as or better than that of the river crab feed sold in the market.

The invention discloses an environmental protection agent for reducing the leaching concentrations of a variety of heavy metals, wherein the components of the formula of the environmental protection agent comprises 0.5-35 wt% of sodium silicate, 0.7-41 wt% of superphosphate, 0.3-40 wt% of ferrous sulfate, 1-33 wt% of sodium humate, 0-22 wt% of ethylenediaminetetraacetic acid, and 0-20 wt% of sodium hydroxide. According to the present invention, the environmental protection agent can be prepared on site according to the pollution type and the ution degree of the soil on site, and the disadvantage that the stabilized repair fixed agent composition is difficultly adapted to the change of the pollution type and the pollution degree can be avoided; with the application of the slurry agent in repair of heavy metal contaminated soil and groundwater, the reaction efficiency is high; and with the environmental protection agent, the leaching toxicities of heavy metals especially copper, lead, cadmium and arsenic in the soil can be easily reduced.

The invention discloses a novel functional biological feed production process. Raw materials of corns, bean meal and the like are partly subjected to enzymolysis, wherein 1 / 3 of proteins are converted into small peptides by enzymolysis, more than one half of starch is decomposed into monosaccharides of fructose, glucose and the like, the small peptides and the monosaccharides can be directly absorbed and utilized by animal bodies. Each of resistance factor urease, pectin, phytic acid and cellulose in a prepared feed is reduced by about 70%; globulins 7S and 11S of soyabean protein sensitization factors are reduced by about 50%, so that the prepared feed is suitable for being used as a feedstuff in the mouth-open period and a creep feed of young animals, an aquaculture bait as well as a nutrient source of animals the in pregnancy and the lactation period. The biological feed provided by the invention has the advantages of being easy to absorb, capable of reducing the animal diarrhea rate and improving the palatability, simple in production process, small in investment, low in cost, and suitable for large-scale production and popularization.

The invention discloses phosphate ionic liquid and a preparation method of the phosphate ionic liquid, application and an extraction method. The preparation method of the ionic liquid comprises the following steps that dialkyl phosphate is dropwise added into bromo-alkyl alcohol for reaction, and then diluting, filtering, washing, drying and decompressing are conducted to obtain a compound I; thecompound I is mixed with alkyl imidazole, washing and drying in vacuum are conducted to obtain a compound II; and the compound II is mixed with hexafluorophosphate or bis trifluoromethyl sulfonyl salt, leaving the mixture to stand, separating, washing and drying in vacuum are conducted to obtain the phosphate ionic liquid. The invention further comprises the ionic liquid prepared by the method, application and an extraction method of the ionic liquid in lithium extraction. According to the phosphate ionic liquid and preparation method of the phosphate ionic liquid, the application and the extraction method, phosphate groups are introduced into cations of the ionic liquid, hexafluorophosphate or bis trifluoromethyl sulfonyl sulfimide is selected as anions to prepare the ionic liquid, and lithium ions are extracted and separated, so that the problems of low extraction efficiency, ionic liquid loss and the like in the prior art are effectively solved.

The invention relates to a secondary decoloring method of animal and vegetable oil. The secondary decoloring method comprises the following steps of a, mixing oil to be decolored and primarily used waste clay, and enabling a mixture to enter a decoloring tower for decoloring treatment; b, treating a material discharged in the step 1 with a primary filter to obtain primarily decolored oil and secondarily used waste clay, and treating the collected secondarily used waste clay according to a conventional waste treatment technology; c, mixing the primarily decolored oil obtained in the step b andnew clay, and enabling a mixture to enter the decoloring tower for decoloring treatment; d, treating a material discharged in the step c with a secondary filter to obtain secondarily decolored oil andprimarily used waste clay, enabling the primarily used waste clay to reflux to the step a for use; and e, treating the secondarily decolored oil obtained in the step d with a bag filter to obtain decolored oil. The secondary decoloring method of the animal and vegetable oil enables the secondary utilization ratio of waste clay to be increased, the waste clay and oil to be more fully mixed and theuse ratio of fresh clay to be lowered and belongs to the technical field of animal and vegetable oil decoloring.