38results about How to "Reduce pollution and other issues" patented technology

The invention provides a method for efficiently preparing stachyose from stachys sieboldii. The method is characterized by comprising the following steps: taking Chinese traditional vegetable stachys sieboldii as a raw material; extracting the stachyose by adopting a pure water homogenate method; and spraying and drying after the processes of filtering a homogenate by a cloth bag; decolorizing the filtered homogenate with macroporous resin, performing ultrafiltration purification and reverse osmosis concentration, and the like, wherein a reverse osmosis permeate liquid is used as water for the homogenate and the resin decolonization elution in the production and the like, so not only resources can be used fully to meet the requirement on production water supply, but also the influence on the purity of the stachyose in the whole production system, caused by pollutants such as saline matters and the like in a natural water source, can be reduced to further improve the purity and the quality of the stachyose. By using the method of the invention, the extraction rate of the stachyose prepared can reach 75 and 85 percent, the purity of the stachyose in a product reaches over 90 percent, and the total recovery rate of the stachyose in the whole process reaches over 60 percent. The method combines a traditional extraction method and a modern separation method, has a simple process and a large handling capacity, is suitable for industrial production, and simultaneously has high product purity, saves resources and the production cost, and has good economic benefits and ecological benefits.

The invention discloses a modified dolomite powder based mineral admixture. The modified dolomite powder based mineral admixture is prepared by uniformly mixing the following raw materials in parts by weight: 50-60 parts of dolomite powder, 15-20 parts of mineral powder, 15-20 parts of fly ash and 5-10 parts of bentonite. Besides, the invention also discloses a preparation method of the admixture. According to the invention, the dolomite powder is used as the concrete mineral admixture, thereby obviously enhancing the working performance of cement concrete, improving water bleeding, ensuring the strength and durability, lowering the cost, and achieving remarkable economic and social benefits.

The invention belongs to the field of utilization of non-traditional resources in the field of environmental protection and discloses a hot-recycling asphalt mixture containing non-traditional oil. The hot-recycling asphalt mixture is characterized by being prepared from a waste asphalt mixture, new aggregate, new asphalt and a non-traditional oil regeneration agent, wherein the waste asphalt mixture accounts for 30%-60% of the total mass of the waste asphalt mixture, the new aggregate, the new asphalt and the non-traditional oil regeneration agent, the new aggregate accounts for 38%-68% of the total mass of the waste asphalt mixture, the new aggregate, the new asphalt and the non-traditional oil regeneration agent, and the new asphalt accounts for 1%-2% of the total mass of the waste asphalt mixture, the new aggregate, the new asphalt and the non-traditional oil regeneration agent; the non-traditional oil regeneration agent accounts for 1%-3.5% of the mass of waste asphalt in the waste asphalt mixture. The implementing process of the mixture is simple, the regeneration effect is good, and the hot-recycling asphalt mixture is economical and environment-friendly.

The invention discloses a full-granularity steel slag pavement base material for a heavy-load pavement The full-granularity steel slag pavement base material is prepared by adding water into a dry material and uniformly mixing, and the dry material comprises 3.4-5.0% of a cementing material and 95.0-96.6% of steel slag aggregate; the cementing material is prepared by mixing 70-90% by mass of cement and 10-30% by mass of steel slag micro-powder according to a certain ratio; and the water accounts for 5-6% of the total mass of the dry material. Excellent physical properties and potential gellingactivity of the steel slag are utilized, the base material with high strength, small cement dosage and reduced dryness can be prepared without additives, the base material is suitable for the heavy-load pavement, and the service life of the heavy-load pavement is prolonged; and an application of the full-granularity steel slag in the base material is realized, natural resources are effectively saved, the problems of environmental pollution and the like caused by improper treatment of the steel slag are reduced, the production cost is reduced, and remarkable social, economic and environmentalbenefits are achieved.

The invention discloses a protein product capable of fixing a target object and being removed as required. The protein product comprises a protein (lysozyme, bovine serum albumin, whey albumin, insulin, alpha-lactalbumin, fibrinogen, ribonuclease A, cytochrome c, alpha-amylase, horse radish peroxidase, pepsase, myoglobin, collagen, keratin or the like), a protein modifier (a strong oxidant or a strong reducing agent), and a target fixture (a paint, a pesticide, a chemical fertilizer, a cosmetic, a medical drug or the like). According to the invention, a protein membrane generated by protein phase transformation is used for fixing the target fixture on a target surface, so the utilization rate of the target fixture is improved, and the problems of resource waste, environmental pollution andthe like caused by loss of the target fixture are reduced. In addition, as the protein membrane is decomposed, the target fixture can also be effectively removed. The main component, namely the protein is safe and environment-friendly, biocompatibility is high, a preparation method is simple, and the protein product has wide prospects in practical application.

The invention discloses an export condensation and recovery purification method for the coke oven raw gas of coal gangue pyrolysis gasification. The method includes the steps of: (1) providing a heat source for coal gangue pyrolysis gasification by heat storage and exchange and alternate combustion of purified coal gas; (2) letting carbon in a coal gangue pyrolysis solid product encounter superheated steam to undergo a water gas reaction so as to generate water gas; (3) exporting coke oven raw gas; (4) spraying ammonia water on the exported coke oven raw gas to lower the temperature so as to form a mixed solution of coal tar and ammonia water; (5) subjecting the mixed solution of coal tar and ammonia water to precipitation separation; (6) leaving the cooled coke oven raw gas to active coke adsorption, applying the adsorbed clean gas to storage or combustion, and subjecting saturated active coke to evaporation regeneration; and (7) fractionating evaporation regenerated light oil, crude benzene, a three-oil mixture, anthracene oil and other ingredients. The method provided in the invention recovers and purifies the coke oven raw gas in coal gangue pyrolysis gasification, realizes extraction and utilization of carbon, oil, gas and other substances in the coke oven raw gas, and has good economic value.

The invention relates to a drug combination for curing the inflammation of vagina, which adopts the form of a foaming agent, in particular to a foaming agent with the principle agents being metronidazole, clotrimazole and chlorhexidine acetate. The drug combination has the advantages of even distribution, wide coating area and better effect in the vagina by adopting the form, and meanwhile, the drug combination feels more comfortable and has stronger retention property than other forms. In the formula of the foaming agent, the drug combination can permeate into the mucosal folds of the vagina rapidly and effectively by dispersing atomizing particles with the particle diameter being a few micrometers in a foaming manner under the action of pressure; the drug combination has higher absorption rate than the spraying agent with water being the only solvent with the assistance from various fat-soluble auxiliary materials; the drug contamination and the cross contamination are avoided during the administration; the invention has the advantages that the curative effect is fully produced, the administration is sanitary, convenient, safe and reliable without causing the foreign body sensation, and the drug combination is easily accepted by patients; and the invention further has the advantages of drug stability, form stability and long effective duration.

The invention discloses an ultrasonic-assisted washing and maintaining method for radix astragali. The method comprises the following steps that the radix astragali is placed in an ultrasonic washingmachine; after the radix astragali is washed for 30 min to 60 min at the water temperature of 25 DEG C or above, the ultrasonic frequency of 40 kHz and the power of 0.3-0.2 w/cm<2>, the radix astragali is soaked in water, a proper amount of environment-friendly, efficient, natural and nontoxic biological preservative is added, and the radix astragali is ultrasonically soaked for 10 min to 20 min at normal temperature and at the ultrasonic frequency of 40 kHz and the power of 0.3-2.0 w/cm<2>; and the soaked radix astragali is placed in a drying oven of the temperature of 40 DEG C for 2 h, and the radix astragali is collected in a plastic self-sealing bag and placed at a shady and cool, ventilated and dry place to be stored. According to the method, the ultrasonic washing technology cooperates with use of chitosan, so that the radix astragali is thoroughly washed, and the hidden danger of mildew and damage from worms is eliminated in advance; and meanwhile, medicinal materials and the external environment are isolated to a certain degree, and the medicinal material maintenance effects of being safe, efficient, natural, free of chemical pollution, environment-friendly and scientific are achieved.

The invention relates to the technical field of functional metal compound modification, in particular to a method for preparing an oxygen vacancy type metal oxide with a controllable acid etching effect. The method comprises the following steps: preparing an inorganic acid or organic acid solution with a certain concentration, adding a certain amount of original metal oxide into the acid solution, performing acid etching reaction at 25-50 DEG C for 1-80 hours, performing centrifugation to realize solid-liquid separation, and performing subsequent deionized water and absolute ethyl alcohol washing and drying to obtain the oxygen vacancy type metal oxide. The material preparation process is simple, the condition is mild, the cost is low, the efficiency is high, and large-scale application can be achieved; the oxygen vacancy concentration of the surface interface of the metal oxide can be effectively and accurately regulated and controlled by selecting and adjusting conditions such as the acid liquor category, the temperature and the time of the acid etching reaction and the like; and the reacted acid liquor can still be recycled and repeatedly utilized.