212 results about "Chloride sodium" patented technology

The invention discloses piggy creep feed containing composite flavone. The piggy creep feed is prepared from the following raw materials in parts by weight: 13 to 20 parts of expanded corn, 10 to 25 parts of corn, 6 to 13 parts of broken rice, 8 to 12 parts of flour, 8 to 15 parts of whey mist, 3 to 8 parts of soy protein concentrate, 5 to 10 parts of extruded soybean, 0.7 to 3 parts of soya-bean oil, 7 to 12 parts of 46.5-percent bean pulp, 2 to 5 parts of fish meal, 2 to 5 parts of plasma protein powder, 0.3 to 0.7 part of mountain flour, 0.5 to 1.0 part of calcium hydrophosphate, 0.05 to 0.5 part of lysine, 0.05 to 0.3 part of threonine, 0.1 to 0.3 part of sodium chloride, 0.1 to 0.8 part of compound flavone premix compounds, 0.15 to 0.3 part of zinc oxide, 0.03 to 0.06 part of calcium propionate, 0.02 to 0.04 part of ethoxyquin and 1.0 part of suckling pig premix compounds. The invention also discloses a preparation method. The intestinal tract health and the production performance of weaned pigs can be improved.

The present invention provides a method of producing hydrochloric acid, comprising reacting high-temperature gaseous chlorine and water vapour in a carbon-free reverse Deacon reaction (RDR) at a temperature of from about 450 to about 750 °Celsius to produce a mixture of gases comprising hydrogen chloride and oxygen. The chlorine is produced by fusing and electrolysing sodium or magnesium chloride in solid phase. The water vapour comes from thermally decomposing a hydroxide of at least one of calcium, magnesium and iron in the absence of oxygen to produce the water vapour without any admixture of oxygen (e.g., from atmospheric air). The mixture of gases produced by the RDR is immediately contacted with liquid water to dissolve the hydrogen chloride therein, thereby producing hydrochloric acid and a stream of tail gases. Heat is extracted from the hydrochloric acid to maintain its temperature substantially constant until the stream of tail gases is no longer in contact therewith. Thus the chlorine and water vapour are both supplied to the RDR at high purity and require little, if any, preheating. Heat extracted from contacting the mixture of gases with liquid water may be used to keep the RDR within its range of operating temperatures. Oxygen can be separated from the stream of tail gases, and the oxygen-depleted stream can be recycled back to the RDR to give a high percentage conversion of chlorine to hydrogen chloride. The RDR may be uncatalysed and kept within its operating temperature range by radio-frequency volumetric heating in at least one of the IEEE Ku-, K- and Ka-bands. The invention also provides a corresponding apparatus (1h) for producing hydrochloric acid, comprising an electrolytic cell (10) for the electrolysis, a gas-tight kiln (20) for the thermal decomposition, a gas-phase reactor (30) for the RDR, and an absorber (40) for dissolving the hydrogen chloride in the liquid water. The apparatus (1h) may further comprise a separator (80) for separating the stream of tail gases into the oxygen-depleted stream and a stream of oxygen, which may be fed to a steelmaking apparatus (90), for example. The liquid water for dissolving the hydrogen chloride can come from condensing water vapour obtained by drying an aqueous solution of sodium or magnesium chloride or of sodium hydroxide. The apparatus (1h) may therefore also comprise a dryer (60) for drying this aqueous solution, and a condenser (70) for condensing the water vapour thus obtained. Sodium chloride or magnesium chloride in solid phase derived from drying the aqueous solution may be recycled back to the electrolytic cell (10). Electricity for the electrolysis can come from a renewable resource. At least some of the heat for the thermal decomposition may come from the liquid metal which is a co-product of the electrolysis. The invention is therefore highly energy efficient and requires little, if any, extra energy, apart from the electricity required for the electrolysis. The invention also uses commonly available ingredients and produces no greenhouse gases.

This invention discloses a liquid-liquid extractant for separating chloride ions, its preparation method, and its application, belonging to the field of industrial wastewater treatment and resource utilization technology. This invention introduces a diaza-18-crown-6-ether fragment into the calix[4]pyrrole skeleton via a Click reaction, successfully preparing a diaza-18-crown-6-ether-bridged calix[4]pyrrole acceptor. This acceptor utilizes the strong coordination ability of crown ethers to alkali metal cations and the strong binding ability of calix[4]pyrrole to chloride ions, exhibiting excellent binding ability to alkali metal chlorides, especially showing extremely high selectivity for sodium chloride. Based on this performance, the compound can be used as a liquid-liquid chloride ion extractant in aqueous solutions. This extractant requires no co-extractant during chloride ion extraction, has an extraction efficiency >99%, and the extraction process is simple and rapid. Furthermore, the extractant can be recycled by reverse extraction of alkali metal chlorides in the organic phase using pure water, demonstrating good application value and broad development prospects in the chloride ion treatment of industrial wastewater.

The application discloses a modified bromhexine hydrochloride inhalation solution with enhanced stability and a preparation method thereof, and belongs to the technical field of medical preparations. The inhalation solution is mainly prepared from a targeting impurity control modified bromhexine hydrochloride inclusion compound, a special composite buffer mother liquor for inhibiting impurity B, inhalation grade sodium chloride, pharmaceutical grade sodium hydroxide and water for injection, and the pH value of the finished product is 4.5-5.5. The application constructs a three-stage progressive modification system, covalently grafts a mercapto-activated L-cysteine derivative onto hydroxypropyl-gamma-cyclodextrin to prepare a functional carrier, and realizes molecular-level isolation of bromhexine hydrochloride through host-guest inclusion, thereby blocking the generation of impurity B of bromhexine hydrochloride from the whole path, and solving the core pain points of easy impurity exceeding, short effective period and airway irritation of the existing product. The application can realize long-acting stable storage for 36 months, is suitable for the existing industrial production line, and has high clinical application and industrialization values.

This invention provides a method for preparing high-purity imidazole ionic liquids, comprising the following steps: S1: 1-Ethyl-3-methylimidazolium chloride, sodium trifluoromethanesulfonate or sodium bis(trifluoromethanesulfonyl)imide, and glycerol solvent are added sequentially to a reactor, followed by stirring and reaction; S2: After the reaction is completed, stirring is turned off, and the resulting crude 1-ethyl-3-methylimidazolium ionic liquid and glycerol mixture are filtered and collected in a separator, with sodium chloride retained in the reactor and subsequently discharged; S3: Pure water is added to the separator, and the separator is stirred for a certain period of time before settling and separation; S4: The two phases in the separator are separated by a separator and then enter their respective purification devices; S5: The crude 1-ethyl-3-methylimidazolium ionic liquid is dehydrated by vacuum distillation to obtain the product; S6: The water and glycerol mixture is distilled under reduced pressure to obtain a reusable aqueous phase and a glycerol phase. This invention yields a product with a purity of over 99.5%; the solvents glycerol and water are reused after distillation. This method is simple, has a yield of over 94%, and is easy to implement in large-scale production.

This invention discloses a culture medium for manganese-oxidizing bacteria suitable for low-carbon source environments in water supply networks and its application. The culture medium is prepared by mixing ferric ammonium citrate, manganese sulfate, ammonium sulfate, sodium chloride, magnesium sulfate, dipotassium hydrogen phosphate, and sodium nitrate, followed by high-temperature and high-pressure sterilization to obtain a culture solution. Manganese sulfate is added to the culture solution to obtain the manganese-oxidizing bacteria culture medium. Manganese-oxidizing bacteria are screened using this culture medium. Cast iron pipe scale is subcultured in the medium to enrich the manganese-oxidizing bacteria culture solution. The enriched manganese-oxidizing bacteria culture solution is diluted and spread onto agar solid medium, and incubated at a constant temperature to obtain manganese-oxidizing bacteria colonies. This invention solves the problem of altered bacterial physiological metabolism caused by high concentrations of added manganese ions, effectively improving bacterial activity and manganese oxidation capacity.

The application belongs to the technical field of medicine, and relates to a compound composition, a preparation method and application, in particular to a compound sodium salicylate composition for treating acute pancreatitis and a preparation method. The compound sodium salicylate composition comprises quercetin, diammonium glycyrrhizinate and sodium salicylate, wherein the mass ratio of quercetin, diammonium glycyrrhizinate and sodium salicylate is 1-5:5-20:50-200. When the compound sodium salicylate composition is an injection, it comprises quercetin, diammonium glycyrrhizinate, sodium salicylate, 1,2-propanediol, sodium bisulfite, dimethyl sulfoxide and 0.9% sodium chloride injection. The volume ratio of 1,2-propanediol and dimethyl sulfoxide in the injection is 14-20% and 0.25-1% respectively; and the mass / volume ratio of sodium bisulfite in the injection is 0.1-0.3%. The compound sodium salicylate composition can significantly reduce amylase, lipase, IL-6 and IL-1beta, and can be used for preparing a medicine for treating pancreatitis.

This invention discloses an extremely salt-tolerant halophilic bacterium, HD16, which can grow under extreme salinity conditions up to 4.0 M sodium chloride (approximately 230 g / L sodium chloride) and also exhibits high alkalinity tolerance, surviving at pH 7–11. Therefore, it is predicted to have broad application prospects in wastewater treatment and other fields. Furthermore, it can be used to produce polyhydroxyalkali (PHA). When cultured in a 500 ml Erlenmeyer flask, the cell dry weight yield reaches 9.45 g / L, with PHA accounting for 72.97% of the bacterial dry weight. The extreme salt tolerance and high alkalinity tolerance of this strain enable it to efficiently accumulate polyhydroxyalkali esters under open, non-sterile conditions.

The application discloses a rare earth magnesium alloy with high corrosion resistance and a preparation method thereof, and relates to the technical field of metal materials. The mass percentage of each raw material component is as follows: Gd: 1-8%; Al: 1.0-1.3%; the balance of Mg and inevitable impurities. The application adds the rare earth element Gd, so that the corrosion resistance of the magnesium alloy in a 3.5 wt.% sodium chloride solution is improved, and the corrosion resistance of the magnesium alloy is further improved in combination with a solid solution heat treatment process. When the addition amount of Gd reaches 8%, the polarization resistance of the electrochemical impedance spectrum reaches 2400 ohm*cm2, which is much higher than the polarization resistance (about 800 ohm*cm2) of a conventional magnesium alloy.

This invention discloses a NiFe-LDH-based catalyst, its preparation method, and its application. The preparation method of the catalyst includes the following steps: dissolving nickel chloride hexahydrate and urea in deionized water; then adding a mixed aqueous solution containing potassium hydroxide and sodium chloride to the above solution; stirring thoroughly; adding an aqueous solution of ferric nitrate nonahydrate dropwise; continuing to add sodium molybdate dihydrate; continuing to stir to form a homogeneous mixture; further adding hydrogen peroxide solution; transferring the solution to a reaction vessel; and carrying out a hydrothermal reaction at 120°C to obtain Ov-NiFe-LDH-MoO4. This invention utilizes H2O2 pre-oxidation to selectively etch the (003) basal plane of NiFe-LDH, creating oxygen vacancies and nanoporous structures, significantly increasing the exposure ratio of the (012) edge crystal planes; MoO4 2‑ Through Ni 2+ Fe 3+ The formation of strong coordination bonds effectively suppresses the reconstruction of the (012) crystal plane, while electrostatic repulsion resists Cl. ‑ Adsorption and corrosion work synergistically to simultaneously enhance both activity and stability.

A patch composition for targeting herpes virus comprising the following ingredients: a patch base, trisodium phosphate, malic acid, sorbitol, sodium benzoate, cellulose gum, peppermint, sodium saccharin, naringin, wind wheel grass extract, xanthan gum, polyethylene glycol-8, calcium carbonate, hydroxyethyl cellulose, hydroxypropyl guar gum, sodium nitrate, hydrated silica, sodium lauryl sulfate, strontium chloride hexahydrate, tranexamic acid, two-faced needle extract, sodium monofluorophosphate, sea salt, potassium nitrate, sodium chloride, and purified water q.s.

The present invention provides a processing kit and processing method with which it is possible to achieve sufficient sensitivity and have little variation in each collected amount of a concentrated liquid of a liquid sample. The processing kit comprises: a water absorbent polymer that absorbs water from a liquid sample containing a test substance and water; a container that accommodates the water absorbent polymer; and a collected liquid container that accommodates a collected liquid containing magnesium chloride and sodium chloride. The collected liquid is added after the liquid sample is inserted into the container.

This invention proposes a sperm staining kit based on a sequential staining strategy of tail pre-staining – rapid differentiation – enhanced nuclear staining. A gentle fixation with 4% paraformaldehyde and acetate buffer preserves the complete nucleic acid of the sperm head and the protein structure of the tail. The addition of PVP K30 and Tween-20 effectively inhibits non-specific adsorption and reduces staining background interference. Brilliant Green SF combined with sodium tartrate is used for specific staining of the sperm tail, followed by rapid differentiation to wash away non-specific staining. Nuclear staining is performed using toluidine blue O combined with sodium chloride and sodium tetraborate hydrate, specifically binding to DNA and enhancing color development stability, resulting in a blue sperm head and a light green tail with clear color contrast. This invention produces a clean staining background, accurately distinguishing the morphology of the sperm head, acrosome, and tail, significantly improving the accuracy of microscopic identification of abnormal sperm such as large-headed, small-headed, curled-tailed, broken-tailed, and short-tailed sperm. It is suitable for detecting sperm morphology and abnormality rates in breeding males.

This invention relates to a method for preparing sodium trimolybdate ammonium monohydrate, characterized in that: (1) ammonium molybdate is dissolved in pure water, and the mass-to-volume ratio of ammonium molybdate to water is controlled at (1-15):50, and stirred evenly; then saturated sodium chloride solution is added to the solution, and the volume ratio of saturated sodium chloride solution to water is controlled at 1:2-5:1; after stirring evenly, 5~95 o C. Let stand for 4-12 days to obtain white flocculent matter; (2) Gently remove the white flocculent matter with a key or glass rod, and wash it by suction filtration or centrifugation. Since sodium trimolybdate monohydrate is water-soluble, it should be washed in small amounts and multiple times; (3) Dry and grind the washed white flocculent matter to obtain sodium trimolybdate monohydrate. Advantages of the present invention: The content of sodium trimolybdate monohydrate obtained is 92-98%, and the yield is 95-99%. The adsorption rate of sodium trimolybdate monohydrate on wastewater containing basic fuchsin and methylene blue is as high as 80% or more.

A method for treating a blowdown stream from a sodium carbonate, sesquicarbonate, wegsheiderite, or bicarbonate crystallizer, said blowdown stream comprising sodium carbonate and / or sodium bicarbonate and at least 1 wt% sodium chloride and / or sodium sulfate, the method comprising: - causticizing at least 50 mol% of the sodium from the sodium carbonate and / or sodium bicarbonate in a caustic solution and in a calcium carbonate sludge with lime and water, - separating the calcium carbonate sludge from the caustic solution; - concentrating the caustic solution by removing some of the water to obtain a concentrated caustic solution containing at least 25% NaOH and a crystallized solid containing sodium carbonate and sodium chloride and / or sulfate; - separating the crystallized solid from the concentrated caustic solution, said crystallized solid to be disposed of or subsequently recovered;- Recycle part of the concentrated caustic solution to the sodium carbonate, sesquicarbonate, wegsheiderite or bicarbonate crystallizer.;

The present application relates to water treatment, and provides a treatment method of molybdenum tail liquid in hydrometallurgy, which comprises the following operation steps: (1) pre-filtering, filtering the tail liquid after adjusting the pH of the tail liquid, so that the SS after filtering is less than 15 mg / L; (2) ultrafiltration, performing ultrafiltration on the solution obtained in step (1), and obtaining ultrafiltration liquid and concentrated water after ultrafiltration; (3) electrodialysis concentration, performing electrodialysis concentration on the ultrafiltration liquid obtained in step (2), and obtaining electrodialysis concentrated water and electrodialysis fresh water after electrodialysis concentration; (4) performing adsorption and filtration operations on the electrodialysis concentrated water obtained in step (3); (5) nanofiltration, performing nanofiltration separation on the liquid obtained in step (4), and obtaining sodium chloride solution, sodium sulfate solution and mother liquor, and returning the mother liquor to step (1) for treatment. The treatment method of molybdenum tail liquid in hydrometallurgy can efficiently treat high-salt molybdenum tail liquid, and the treated tail liquid can be directly reused.

This invention discloses a stable nalmefene hydrochloride injection and its preparation method, relating to the field of biomedical technology. The injection consists of nalmefene hydrochloride, sodium chloride, hydrochloric acid, and water for injection, and contains no metal ion chelating agents, with a pH value controlled between 3.5 and 3.6. The method includes: preparing the solution and adjusting the pH under high-purity nitrogen protection in a solution preparation system with low metal ion introduction risk; filtering the solution through a polyethersulfone membrane with low metal leaching, and then filling it into ampoules with a vulcanized inner surface. This invention, through the systematic integration of multiple measures such as source control of the solution preparation system, inert atmosphere protection, precise pH control, surface passivation of packaging materials, and the use of high-purity materials, synergistically inhibits the metal ion catalytic oxidation of the active ingredient, ensuring that the content of the key degradation impurity II (2,2'-bisnalmefene) remains stably below the quality standard during long-term storage, solving the problem of chemical stability control of products in chelator-free formulations, and combining safety and process robustness.

This invention relates to the field of organic wastewater treatment technology, specifically to a method for treating high-COD excess water: (1) First, a mixture I containing high-COD excess water and electrolyte I is subjected to electrocatalytic oxidation treatment I to obtain purified liquid I and tail gas I. Then, purified liquid I is mixed with active components to obtain an impregnation solution. Then, the carrier is impregnated in the impregnation solution and calcined to obtain a molybdenum-based residue oil hydrodemetallization catalyst; or, a mixture II containing high-COD excess water and electrolyte II is subjected to electrocatalytic oxidation treatment II to obtain purified liquid II and tail gas II. Then, purified liquid II is filtered and subjected to biochemical treatment to obtain biochemical effluent; electrolyte I is nitric acid, and electrolyte II is selected from one or more of sodium sulfate, sodium chloride, potassium chloride, and potassium sulfate; (2) Tail gas I and / or tail gas II are contacted with alkaline solution for tail gas absorption treatment. This method has mild operating conditions, good treatment effect, and high economic benefits, and is suitable for promotion.

This invention provides a system for the treatment and reuse of wastewater from the washing of fly ash from waste incineration. The system comprises a conditioning and preheating device, a first-effect evaporation unit, a second-effect evaporation unit, a third-effect evaporation unit, a parallel first-effect evaporation unit, a calcium chloride precipitation unit, a potassium chloride precipitation unit, a sodium chloride precipitation unit, and a vacuum device. The various devices and units work synergistically, and with the accompanying methods, not only can engineering construction investment be reduced by 30%-40%, but the overall production and operating costs can also be reduced by approximately 30%. Furthermore, it can fully achieve the effective treatment of wastewater and the comprehensive recycling of all resources, resulting in significant social, environmental, and economic benefits.

The application discloses a high-salinity wastewater resource recovery system and method, and relates to the technical field of high-salinity wastewater treatment and resource recovery. The system comprises a pretreatment system, a magnesium hydroxide crystallization and granulation unit, a calcium carbonate crystallization and granulation unit, a filtering device, a desalination device, an NF nanofiltration salt separation device, an RO concentration device, a reaction device, an evaporation crystallization device and a gypsum crystallization unit. The system synchronously recovers magnesium hydroxide, calcium carbonate, sodium chloride and gypsum, realizes waste-to-resource and full resource recovery, and does not enrich organic matters through electric adsorption desalination, thereby solving the problems of membrane pollution and evaporation system fouling from the source and improving the anti-pollution capability. The system does not need expensive pretreatment such as advanced oxidation, the seed circulation crystallization reduces the addition of reagents, the evaporation water volume is greatly reduced, and the operation cost is low. The water production rate is greater than or equal to 90%, the whole process is closed-circuit circulation, there is no mother liquor, no impure salt and no hazardous waste discharge, and the system realizes true zero emission.

This utility model relates to the field of lithium carbonate preparation technology from brine. To address the problems of complex processes, low resource recovery rates, and high production costs associated with existing direct brine lithium carbonate preparation processes, this utility model provides a production system for the direct preparation of lithium carbonate and co-production of sodium chloride from brine. The system includes a brine buffer unit, a first purification unit, a boron removal unit, a second purification unit, a first neutralization unit, a sodium precipitation unit, a lithium precipitation unit, and an alkali preparation unit. The brine buffer unit, the first purification unit, the boron removal unit, the second purification unit, the first neutralization unit, the sodium precipitation unit, and the lithium precipitation unit are connected sequentially. The alkali preparation unit is connected to the feed end of the lithium precipitation unit. This utility model enables the direct preparation of lithium carbonate and co-production of high-purity sodium chloride from brine, reducing the complex impurity removal and washing processes while fully utilizing the chlorine resources in the brine.

The invention discloses a zero-discharge device and process for double-layer liquid sealing, redundant chlorine capturing, siphon pure discharge and closed-loop electrolysis of metal sodium, and belongs to the technical field of metal sodium preparation. The device comprises a furnace body, an oxygen-isolating anti-explosion inert liquid seal layer, a chlorine capture liquid seal layer, a liquid metal sodium layer, a molten sodium chloride electrolysis layer, a siphon type pure sodium discharge structure and an automatic feeding control system, the double-layer liquid seal is adopted to realize oxygen isolation, explosion prevention and chlorine in-situ absorption, the chlorine absorption capacity is designed to be more than two times of the maximum chlorine yield, and no leakage is ensured; liquid sodium is driven by lifting the liquid level during feeding to trigger siphon discharge, only pure metal sodium is produced, entrainment is avoided, and the purity is high; reaction byproducts are converted into raw materials to be recycled, no waste gas, no waste residues and no waste liquid exist in the whole process, and the byproduct water vapor can be condensed into purified water to be utilized. The device is simple in structure, intrinsically safe, high in automation degree, environmentally friendly and suitable for continuous production of high-purity metal sodium.

The application provides a kind of bionic anti-crack asphalt mixture and its preparation method, belong to building material modification technical field, the bionic anti-crack asphalt modifier, raw material includes polyacrylic acid sodium solution, sodium chloride solution and calcium chloride solution.The bionic anti-crack asphalt modifier provided in the application forms a three-dimensional structure of interaction by the interaction of hydrogen bond, ionic bond and covalent bond, so that the ions in chitosan solution, polyacrylic acid sodium solution, sodium chloride solution and calcium chloride solution form a three-dimensional structure of interaction, while improving the mechanical strength, significantly improve the anti-crack performance and self-repairing ability of the material.The bionic anti-crack asphalt modifier and matrix asphalt, mineral aggregate are combined, so that the obtained bionic anti-crack asphalt mixture has better anti-crack function without affecting the performance of asphalt pavement.

This invention belongs to the field of oil and salt reduction technology in food processing, and discloses a Pickering emulsion with dual oral pH and enzyme responses, its preparation, and its application in oil and salt reduction. The Pickering emulsion comprises an outer aqueous phase, an oil phase, and an inner aqueous phase, homogenized by high-speed shearing. The outer aqueous phase is an aqueous solution containing 0%-5% sodium chloride and 2%-5% oxidized starch-gelatin nanoparticles; the oil phase is a mixture of edible oil and polyglycerol ricinoleic acid ester; and the inner aqueous phase is a sodium chloride aqueous solution with a mass fraction of 2%-10%. The emulsion constructed by this invention can release 90%-94% of sodium ions in the oral cavity. When added to sauces, it can reduce the amount of sodium chloride added by 20% while maintaining the perception of saltiness. Furthermore, while "reducing salt without reducing saltiness," it also has good oral lubrication properties and can replace 14.7%-20% of the added oil, showing good application prospects in reducing oil in food seasoning sauces.

The application discloses a preparation method of a novel nanoemulsion nasal spray dressing which is composed of nano-micelles, isopropyl myristate, purified water, sodium chloride, potassium sorbate and citric acid monohydrate, wherein the nano-micelles are composed of RH-60 hydrogenated castor oil, polyethylene glycol 400 and hydroxypropyl-beta-cyclodextrin; the preparation steps of the nano-micelles are as follows: the preparation steps of the nanoemulsion nasal spray dressing are as follows: when the isopropyl myristate is mixed with the nano-micelles, the stirring speed is adjusted to 900-1200 rpm, the temperature is increased to 40-50 DEG C, stirring is carried out for 20-30 min, the stirring speed is adjusted to 1200-1350 rpm, the purified water is slowly added along the wall of a beaker at a temperature of 30-35 DEG C, and stirring is continuously carried out for 35-45 min; the stirring speed is reduced to 600-800 rpm, the sodium chloride and the potassium sorbate are added at a temperature of 22-28 DEG C, and stirring is carried out for 8-15 min; the nanoemulsion nasal spray dressing prepared by the method is prepared by matching mild ingredients, has simple preparation process, is non-irritating, can further reduce the irritation to the nasal mucosa of patients and protect the nasal mucosa.

The application discloses a kind of Tibetan pig low-salt sausage of compound low-sodium salt and preparation method thereof, it is related to low-sodium salt preparation technical field, including the following raw materials: sodium chloride, modified potassium chloride, stabilizer, modified potassium lactate and composite powder.In the application, modified potassium chloride and modified potassium lactate are mutually synergistic and matched, in the production of Tibetan pig low-salt sausage, modified potassium chloride can replace part of sodium salt to supplement saltiness, completely avoid the bitter taste and metallic off-flavor of ordinary potassium salt, ensure that sausage taste is pure and natural, does not cover up the fresh and fragrant of meat itself;Modified potassium lactate can lock the moisture of meat product, improve the compact texture of sausage, avoid dry meat, and also play a role in mild bacteriostatic preservation, but also avoid the moisture of ingredients to be clumpy, convenient production and deployment.Two-way cooperation, perfect support low-salt formula seasoning demand, improve overall edible palatability, optimize sausage texture quality and storage stability, so that low-salt sausage is healthy in sodium reduction, taste and quality are comprehensively improved.

This invention discloses a method for oxidative leaching of selenium and mercury from copper smelting acid sludge, belonging to the field of solid waste comprehensive utilization technology. The leaching system in the oxidative leaching is a ternary synergistic oxidative leaching system of "sulfuric acid-sodium chloride-oxidant". Under the action of the synergistic leaching system, efficient and selective leaching of selenium and mercury from copper smelting acid sludge is achieved. This method avoids the corrosion of equipment by volatile acids and the problem of excessive oxidation of the nitric acid system, and significantly improves the stability of the oxidation process and the efficiency of reagent utilization, ultimately achieving multiple goals such as efficient recovery of valuable metals, low-carbon and energy-saving process flow, and compliant and harmless treatment of hazardous waste.