31results about How to "No change in pH" patented technology

The invention discloses a repair method of arsenic-polluted soil. The repair method comprises the following steps: 1) activation: an activating agent is added in the arsenic-polluted soil, and is uniformly stirred for reaction; 2) oxidation: manganese dioxide is added in the arsenic-polluted soil activated in the step 1), and is uniformly stirred for oxidation; 3) stabilization: a stabilizing agent is added in the arsenic-polluted soil oxidized in the step 2), and is uniformly stirred for standing; and 4) acid and alkali adjustment: plant ash is added in the arsenic-polluted soil stabilized in the step 3), is uniformly stirred, and is naturally cultivated; and meanwhile, the water content of the soil is adjusted. The repair method combines a leaching technology with a stabilizing technology, and is simple in operation, wide in raw material source and excellent in stabilizing effect.

A treatment method of magnesium or magnesium alloy surface relates to the treatment method of metal material surface and solves the problems of the existing magnesium or magnesium alloy in application, such as severe mechanical property loss, excessive degradation speed and local pH value increase caused by the generation of large numbers of hydrogen bubbles accompanied with the degradation process. The method comprises the steps of: firstly, washing and drying parent metal; secondly, using NaOH solution for treating the parent metal after washing; and thirdly, forming a dicalcium phosphate dehydrate layer on the surface of the parent metal. Adopting the NaOH solution for treatment, the method can adjust the magnesium or magnesium alloy surface state and transplants parent material for forming hydroxylapatite into a human body, the mechanical property loss is reduced, the degradation speed is slowed, and the pH value is not changed basically; and the method has simple technique and can form uniform hydroxylapatite on the surface of the parent material, without the falling-off phenomenon.

The invention provides a levetiracetam sodium chloride injection composition. The levetiracetam sodium chloride injection composition is composed of levetiracetam, sodium chloride, sodium acetate trihydrate and water for injection, wherein weight ratio of the levetiracetam to the sodium chloride is 1:4.5-3:1. The levetiracetam sodium chloride injection composition has the advantages of formula simplicity, high stability, high safety, suitableness for industrial production and the like.

The invention provides a fluticasone propionate spraying agent with improved stability. According to the invention, it is found for the first time that a combined stabilizing agent can be formed by adding disodium edetate into conventional antiseptics--benzalkonium chloride and phenylethyl alcohol, which enables the fluticasone propionate spraying agent to have better stability compared with traditional preparations. After long-term storage, the spraying mode and a droplet distribution scope of the fluticasone propionate spraying agent basically maintain unchanged; the pH value of the preparation is maintained in a proper range without usage of a pH value adjusting agent, and the pH value basically maintains unchanged after long-term storage. The invention further provides a preparation method for the spraying agent.

The invention relates to an ultrasonic-enhanced method for removing arsenic in waste acid. The method comprises the following specific steps: simultaneously adding a certain amount of a metal powder and a sulfate solution into the waste acid, then applying ultrasonic waves for enhancing, reacting for a certain period of time, generating precipitate, and carrying out solid-liquid separation to obtain a filtered solution and precipitate impurities. According to the method provided by the invention, the generation of lime slag is effectively reduced, arsenic impurity ions in waste acid are effectively removed, the treated acid can be reused in a workshop section, and meanwhile, the pollution to the environment is reduced; meanwhile, the increase of the whole solution temperature of the wasteacid is avoided, and the energy consumption in the production process is reduced; and economic benefits and environmental benefits are comprehensively realized.

The invention relates to a diluent applied to a blood analyzer and a preparation method thereof. Per liter of the diluent applied to the blood analyzer comprises the following components: 0.8-1.2g of boric acid, 0.25-0.35g of borax, 0.3-0.4g of EDTA-2NA, 0.02-0.03g of sodium azide, 0.8-1.2g of anhydrous sodium sulfate, 7.0-7.5g of sodium chloride, 0.8-1.2L of deionized water and 0.08-0.12mL of gentamicin. Through the adoption of the scheme, the diluent is used as an isotonic solution; the diluent has a specific conductance value and is used as a special diluent of an electrical impedance method blood cell analyzer; the blood diluted by the diluents effectively blocks synthesis of bacterioprotein and prevents aggregation and adhesion of blood cells; a stable detection environment is supplied to blood cell counting, volume measurement and leukocyte classification.

The invention provides a levetiracetam-sodium chloride injection composition. The levetiracetam-sodium chloride injection composition comprises levetiracetam, phosphate, sodium chloride and injection water according to a weight content ratio of levetiracetam to sodium chloride of 1: 4.5-3: 1. The levetiracetam-sodium chloride injection composition has the advantages of simple formula, high stability, high safety and industrial production feasibility.

The invention relates to a production method of a high-performance scale inhibiting material. The production method is characterized by comprising the following production steps: 1) wafer culture and production; 2) wafer and sphere surface optimization; 3) protective liquid encapsulation and glass coating crushing. According to the method, the spherical granules of specially-shaped polymer resin are used as a medium, the diameter is 0.5-1mm, the technologies of forming wafers, amplifying the wafers and activating the surfaces are adopted to develop the internationally leading high-performance physical scale inhibiting material with low-energy heterogeneous nucleation crystallization reaction, and the scale inhibiting material and related filters are massively produced. The technical scheme adopts the advanced physical scale inhibiting material, requires no energy consumption, and has the scale inhibiting and removing functions of a chemical product. Maintenance cost is reduced. Meanwhile, the chemical additive widely used for scale inhibiting and removing at present is avoided, and the pollution to water resources and environments is reduced. The service life can be three to five years.

The invention discloses a preparation method of a corn kernel fermented feed and relates to a preparation method of a fermented feed. The preparation method disclosed by the invention solves the technical problem that loss of nutritional ingredients is severe as the kernel crushing method ferments the corn kernels and the kernels are easily corrupted if being stored. The preparation method comprises the following steps of: I, threshing the corn kernels, the water content of which are 25-30%, to obtain the corn kernels; II, dissolving sodium propionate in water to obtain a sodium propionate aqueous solution; III, uniformly spraying the sodium propionate aqueous solution to the corn kernels, uniformly stirring the corn kernels and the sodium propionate aqueous solution, then compacting and sealing the mixture, and covering the surfaces of the compacted corn kernels with 10-20cm soil or a weight; and IV, storing the corn kernels for 1 month at normal temperature to obtain the corn kernel fermented feed. The preparation method disclosed by the invention is simple in used equipment and not severe in demand on fermenting condition. The cost of raw materials of an additive for treating 1 ton of the corn kernels is about 60 yuan. The preparation method is simple to operate and is of extremely promotional meaning. The preparation method disclosed by the invention belongs to the field of preparation of the fermented feed.

An apparatus and a method for conditioning dampening solution for an offset printing press, include a cation exchanger for the removal of salt-forming ions from the dampening solution. The operation of the cation exchanger leaves the pH of the dampening solution unchanged. The apparatus includes a control device based on measuring the water hardness of the dampening solution for the supply of the dampening solution to the cation exchanger.

The invention relates to a method for removing arsenic and chlorine in acidic wastewater of metallurgical enterprises so as to remove arsenic and chlorine in acidic wastewater. The method comprises the following steps: simultaneously adding a certain amount of iron powder and a copper sulfate solution into acidic wastewater, stirring, reacting for a set time, generating precipitate, and carrying out solid-liquid separation to obtain a filtered solution and precipitate impurities; and continuously carrying out adsorption exchange dechlorination on the filtrate by using an ion exchange resin. According to the arsenic removal method provided by the invention, the generation of lime slag is effectively reduced, arsenic impurity ions in waste acid are effectively removed, and the arsenic removal efficiency is high; other impurities are prevented from being introduced during chlorine removal, the treated acid and water can be reused in a workshop section, and the pollution to the environmentis reduced; the increase of the whole solution temperature of waste acid is avoided, and energy consumption in the production process is reduced; and economic benefits and environmental benefits arecomprehensively realized.

The invention provides an antimicrobial modified sulfonated styrene-based polymer compound and a preparation method thereof. The antimicrobial modified sulfonated styrene-based polymer compound provided by the invention comprises a sulfonated styrene-based polymer and a cationic compound loaded on the sulfonated styrene-based polymer, wherein the content of styrene in the sulfonated styrene-based polymer is 25wt%-50wt%, and the sulfonation degree is 35mol%-65mol%; the cationic compound is selected from one or more of quaternary ammonium salt, quaternary salt, quaternary phosphonium salt, guanidine salt and pyridinium salt; the biquaternary ammonium salt is single-chain quaternary ammonium salt and/or double-chain biquaternary ammonium salt. The compound provided by the invention can improve the antibacterial property, the antiviral property and the lasting stability of the material, and is safe to use.

The invention relates to a sewage treatment method in the production of paper base friction materials. The sewage treatment method comprises the following steps: passing the crushed edge scraps and wastes produced during the production of the paper base friction materials through a screen, and keeping main crushed fiber objects; evenly mixing the main crushed fiber objects and inorganic finely ground particles through a wet method so as to prepare a composite filler; respectively filling the filtering layers of a nylon screen, a 2-5 cm fine sand layer, a nylon screen, a 15-30 cm composite filler layer, an iron screen and a 8-15 cm inorganic macro aggregate filler layer in turn from bottom to top; and passing the sewage to be treated through the filtering layers in turn from top to bottom, and reflowing the treated water to a sheet-making machine through a pipeline after filtration so as to realize the cyclic utilization of the sewage. The method omits the step of pH value readjustment, and makes the raw material in a processing device be easily obtained while simultaneously making full use of the raw material in the production of the paper base friction materials.

The invention relates to a preparation method for converting bacterium lacticum straw powder into a biologic feed. The preparation method comprises the steps of step 1, preparing straw powder; step 2,preparing making fluid; step 3, preparing a straw powder biologic feed precursor: uniformly mixing 126.8 parts of the making fluid which is just prepared with 50 parts of straw powder and 1 part of corn flour so as to obtain a straw powder biologic feed precursor mixture; step 4, performing anaerobic fermentation on the straw powder biologic feed precursor: loading the precursor mixture which istreated in the step 3 into a charging container which is light-proof and air-proof, compacting materials, so that air seal does not exist in the compacted materials, performing fermentation at the temperature of 20-38 DEG C for 48-72 hours, stopping culturing, and placing the cultured precursor mixture in a shady, cool and dry place at room temperature; step 5, enabling fermented straw powder biologic feed obtained through fermentation in a closed container to be stored at room temperature for 3-6 months, and taking out the straw powder biologic feed from the closed container when the straw powder biologic feed needs to be used, wherein the pH value of the fermented straw powder biologic feed is smaller than or equal to 3.5, and finished products are grey in color and fragrant in smell; and 6, using the fermented straw powder biologic feed as a feed for cattle, pigs, tilapia and the like.