638 results about "Chloride potassium" patented technology

The invention provides a process for recovering various valuable elements such as lead, zinc, silver and potassium from soot of a steel mill. The process comprises the following steps of water leaching, fluorine removal, high-temperature concentration, primary cooling crystallization, secondary cooling crystallization, secondary leaching, ammonia leaching and ammonia distillation. According to the recovery process, potassium in the soot of the steel mill is recovered in the form of potassium chloride, zinc is recovered in the form of zinc sulfate, silver is recovered in the form of silver chloride, only auxiliary materials such as sulfuric acid, ammonia water and calcium chloride which are low in price are used in the whole recovery process, the cost is low, no waste water or waste residues are generated in the whole process, the direct recovery rate of lead and zinc is 95% or above, and the production cost is low. The direct recovery rate of silver is 98% or above, and the method has practical application value.

The invention relates to a method for recovering mixed salts (mainly containing calcium chloride, sodium chloride and potassium chloride) from a household garbage incineration fly ash leaching solution, and particularly provides two separation technical schemes. The traditional separation method generally needs to use a large amount of decalcifying agent, so that the cost is high, calcium chloride cannot be effectively recycled, and the problem of resource waste exists. In order to solve the problems, the invention selectively dissolves calcium chloride in the mixed salt by adopting a specific organic solvent (such as ethanol or methanol) and utilizing the characteristics that the solubility of calcium chloride in the solvent is high, the solubility of sodium chloride and potassium chloride is low, and the boiling point is relatively low. And a calcium chloride product can be recovered after solvent evaporation. Furthermore, the residual mixed salt is further washed using the specific organic solvent to remove entrained calcium chloride, thereby obtaining a mixed salt containing predominantly sodium chloride and potassium chloride. According to the technical scheme 1, the mixed salt subjected to separation and calcium removal is subjected to dissolution treatment under the high-temperature condition, potassium chloride is dissolved, the particle size of sodium chloride crystals is promoted to be increased, the sodium chloride crystals are obtained through solid-liquid separation, and then mother liquor is cooled and crystallized to recover potassium chloride. According to the technical scheme 2, the mixed salt subjected to separation and calcium removal is subjected to aging treatment so as to promote particle size increase of sodium chloride and potassium chloride crystals, then the aged mixed salt is separated by adopting a flotation method, and sodium chloride and potassium chloride products are recycled respectively.

The invention discloses a fermentation medium for regulating and controlling a clostridium aerovorans target product and a fermentation method of the clostridium aerovorans target product. The medium comprises a basic component and a regulating component, the basic components comprise ammonium chloride, potassium chloride, magnesium sulfate heptahydrate, sodium chloride, monopotassium phosphate, yeast powder, calcium chloride dihydrate, sodium selenite, nickel chloride hexahydrate, biotin, folic acid, pyridoxine hydrochloride, thiamine, riboflavin, nicotinic acid, D-calcium pantothenate, cobalamin, para aminobenzoic acid and lipoic acid; the adjusting component comprises sodium tungstate, ferrous sulfate and sodium molybdate, sodium tungstate and ferrous sulfate have a forward adjusting effect on increasing the yield of acetic acid, ethanol and butanol in the target product, and sodium molybdate has a reverse adjusting effect on the target product. By optimizing the proportion of trace elements in the culture medium, the clostridium metabolism efficiency is improved, synthesis of a target product is regulated and controlled, and the method is particularly suitable for industrial production of acetic acid, ethanol, butanol and the like.

The invention relates to the technical field of fertilizers, and discloses a slow-release coated fertilizer and a preparation method thereof. Comprising the following raw materials in parts by weight: 57 to 77.6 parts of urea, 14.25 to 24.25 parts of diammonium phosphate, 0 to 5 parts of calcium superphosphate, 4.75 to 14.55 parts of potassium chloride, 0.03 to 0.2 part of chitosan, 0.0075 to 0.05 part of nano silicon dioxide, 0.001 to 0.015 part of glutaraldehyde, 2.96 to 4.94 parts of deionized water, 0.01 to 0.1 part of bacillus subtilis, 0.05 to 0.2 part of mesoporous silicon dioxide loaded nano selenium and 0.5 to 1 part of potassium fulvate. Chitosan, nano silicon dioxide and glutaraldehyde are matched with one another, and chitosan has pH responsiveness, so that the problems that a coating layer of a traditional slow-release fertilizer is prone to being affected by the environment and broken in advance, nutrients are rapidly released, and the slow-release effect is reduced are solved.

The invention provides a method for promoting generation of tea acid from Nemania sp YAFEF112, and relates to the technical field of microbial culture. According to the method, mycelia of Nemania sp YAFEF112 are inoculated into a culture medium containing pruned walnut branches for culture, the culture medium is an MM culture medium, and the specific formula of the culture medium comprises 1.52 g / L of monopotassium phosphate, 0.52 g / L of magnesium sulfate, 6 g / L of sodium nitrate and 0.52 g / L of potassium chloride. According to the method, the defects in the prior art are overcome, and good conditions are provided for the production of the tea pickled acid by optimizing the formula of the fermentation culture medium, adding pruned walnut branches into the culture medium, improving the fermentation conditions and increasing the content of the tea pickled acid in the Nemania sp YAFEF112 hyphae.

The invention discloses a sugar-free electrolyte beverage and a preparation method thereof, and relates to the technical field of functional beverages. The sugar-free electrolyte beverage comprises the following components in parts by weight: 80-90 parts of erythritol, 0.5-2 parts of an electrolyte component, 0.4-0.8 part of a buffer agent, 0.1-0.2 part of vitamin B6, 0.1-0.5 part of taurine, 1-3 parts of an auxiliary agent and 1000-1200 parts of water, the electrolyte component comprises at least four of edible salt, potassium chloride, magnesium sulfate, calcium lactate and calcium citrate, the buffer agent comprises potassium dihydrogen phosphate and sodium citrate, and the auxiliary agent comprises sodium dihydrogen phosphate and sodium citrate. The auxiliaries comprise citric acid, sodium benzoate and essence. The sugar-free electrolyte beverage disclosed by the invention is high in blood osmotic pressure recovery speed, does not cause blood sugar fluctuation when supplementing electrolyte for a human body, and tastes fresh and cool.

The present invention relates to a high-salt wastewater resource utilization technology, particularly to the resource utilization of potassium nitrate mother liquor, and specifically to a method for recycling potassium resources in the potassium nitrate mother liquor. The method comprises brine adjustment, first-stage cooling, second-stage cooling, solid-liquid separation, decomposition and washing, and evaporation and concentration. A decomposition liquid produced by the decomposition and washing is mixed with a concentrated liquid produced by evaporation and concentration to adjust the MgCl2 content in the system. The brine-adjusted system is cooled in two stages, followed by solid-liquid separation to obtain a crystalline solid and a crystalline mother liquor. The crystalline solid is added to the potassium nitrate mother liquor and stirred thoroughly, followed by solid-liquid separation to obtain potassium chloride solid and a decomposition liquid. The potassium chloride solid is reused as a production raw material. The crystalline mother liquor is evaporated and concentrated, and a portion of the concentrated liquid and the decomposition liquid are recycled by mixing brine. The remaining concentrated liquid is cooled to room temperature to obtain MgCl2·6H2O solid. The present invention recycles potassium chloride in the by-product mother liquor without adding additional steam and water.

The invention discloses a preparation technology of high-purity potassium chloride, and relates to the technical field of potassium chloride preparation, the preparation technology comprises the steps of raw material treatment, impurity removal, dissolution and filtration, a crystallization reaction kettle stage and drying and packaging, a driving motor is arranged at the top end of a crystallization kettle main body, and a reaction cavity is formed in the crystallization kettle main body; the inner wall of the collecting box is scraped through the edge of a fixed scraper, crystals which are not cleaned up on the surface of the collecting box are cleaned again through a Y-shaped scraper, and the situation that the crystals on the surface of the collecting box are omitted and left on the surface of the collecting box is avoided; the crystals on the surface of the collecting box are scraped, so that high-purity potassium chloride can be discharged, the end of the scraping knife is always in contact with the side wall of the collecting box, the potassium chloride crystals on the side wall of the collecting box are cleaned more thoroughly, and the collecting box and the stirring fork rotate in opposite directions, so that the potassium chloride crystals on the surface of the collecting box can be quickly cleaned.

The invention relates to a method for separating sodium and potassium from mixed sulfate containing sodium and potassium, which comprises the following steps: mixing the mixed sulfate containing sodium and potassium, a calcium-containing compound and water, dissolving and reacting to obtain potassium-removed mother liquor and double salt precipitate; performing first crystallization on the potassium-removed mother liquor to obtain a sodium sulfate product; mixing the double salt precipitate with water for elution treatment to obtain a potassium sulfate solution; performing secondary crystallization on the potassium sulfate solution to obtain a potassium sulfate product; according to the method, efficient separation of sodium and potassium in the mixed sulfate containing sodium and potassium is achieved, the purity of the obtained sodium sulfate product is preferably as high as 99.0% or above, the potassium content in potassium sulfate is preferably as high as 54.2 wt% or above based on the mass content of potassium oxide, the whole technological process is short, potassium chloride does not need to be added, the separation cost is low, waste gas, waste liquid and solid waste are not generated, and the method is suitable for industrial production. And green resource utilization of the mixed sulfate containing sodium and potassium is realized.

The invention discloses an anti-freezing solution for improving the survival rate of sperms of Chinese prawns and a cryopreservation method of the anti-freezing solution, and belongs to the technical field of low-temperature biology and reproductive science. The invention provides an anti-freezing solution for cryopreservation of sperms of Chinese prawns, which comprises a basic solution and an anti-freezing agent, and the anti-freezing agent is dimethyl sulfoxide with the volume fraction of 10% or glycerol with the volume fraction of 10%; the basic liquid contains 23.69 g of sodium chloride, 1.1 g of potassium chloride, 14.8 g of magnesium chloride hexahydrate, 4.3 g of sodium sulfate, 0.23 g of sodium bicarbonate, 1.12 g of calcium chloride and distilled water with the constant volume of 1000 mL. According to the cryopreservation method provided by the invention, 10% dimethyl sulfoxide or 10% glycerol is adopted as an antifreeze agent, the sperm density is controlled to be 1 * 10 < 7 > / mL, and step-by-step cooling is carried out, so that the survival rate of unfrozen sperms reaches 90% or above. The long-term preservation effect of the Chinese prawn sperms is remarkably improved, and the method is suitable for germplasm resource protection and efficient breeding.

The invention discloses a production process for preparing potassium sulfate from glauberite by an asymmetric balance method, which is characterized in that two asymmetries are designed, one is that an evaporation system adopts a mode of feeding more cold clear liquid and discharging more salt mother liquid, evaporation is carried out according to a fixed proportion, enough evaporation condensate water can be evaporated in unit time, and the evaporation efficiency is improved; the excessive part is used for digesting water from an external supplementing system; secondly, the secondary conversion reaction is a reaction of a potassium chloride solution and glauberite in an equal proportion, the glauberite containing the glauberite is matched with anhydrous sodium sulphate to produce potassium sulfate, and the core is that the potassium index of a primary conversion reaction system is controlled by using the proportion of the glauberite containing the glauberite, so that the production quantity of the glauberite is adjusted; the potassium sulfate is matched with the evaporation and condensation water amount consumed due to equal-proportion dissolution, so that the overall balance is maintained for production, and meanwhile, the quality of the prepared potassium sulfate meets the quality requirements of agricultural potassium sulfate national standard GB / T 20406-2017 powder crystalline superior products (K2O is greater than or equal to 52%) and first-grade products (K2O is greater than or equal to 50%).

The invention discloses a composite inducer for promoting adhesion and metamorphosis of marine bivalve mollusk larvae and an application method of the composite inducer. The composite inducer for promoting adhesion and metamorphosis of the marine bivalve mollusk larvae comprises glutamine, glutamic acid, potassium chloride, calcium chloride and taurine, and the concentration ratio of the glutamine to the glutamic acid to the potassium chloride to the calcium chloride to the taurine is 1: 1: 2 * 10: 1.7 * 10: 4. According to the application, glutamine, potassium ions, calcium ions, glutamic acid and taurine are matched, the application effect of the glutamine, the potassium ions, the calcium ions, the glutamic acid and the taurine in the aspect of improving the attachment and metamorphosis rate of the shellfish larvae is defined, the technical blank of multi-component cooperative regulation and control of the attachment and metamorphosis of the shellfish at present is filled, a new solution is provided for bivalve shellfish fry production, and the application prospect is wide. The method is of great significance in promoting healthy development of the mariculture industry.

The present invention relates to a process for producing a controlled-release fertilizer for potassium chloride, which comprises the following steps: a. providing compacted KCl having a sphericity of below 0.87; b. dry polishing the KCl in a high-intensity mixer-type device comprising a container and at least one set of stirring elements, such that the KCl has a sphericity between 0.88 and 0.92; c. providing a coating on the polished KCl. In the case of a 6 pph coating, the polished and coated compacted KCl may exhibit a release of about 18% after 7 days when measured using a water leaching test at 21°C. The polished and coated compacted KCl may have one or more of the following release properties: a release of about 20% or less at 10 days; and / or a release of 40% or less at 30 days; and / or a release of 50% or less at 50 days.

The invention discloses a low-sodium myofibrillar protein flavor prediction method and a low-sodium myofibrillar protein flavor prediction device. The method comprises the following steps: firstly, constructing a protein-flavor interaction system containing myofibrillar protein, potassium chloride, kappa-carrageenan and representative aldehyde flavor compounds; then, by means of spectroscopy, rheometer combination, an electronic tongue and the like, protein conformational change, typical aldehyde molecule binding rate and taste features are represented in a multi-dimensional mode. And establishing a random forest prediction model, taking protein conformation parameters as input, and taking a flavor binding rate and effective taste intensity as output. The model can reveal cross correlation between protein conformations and functions and identify key conformation parameters that affect flavor. And in combination with quantification and prediction capabilities of the model, a conformation-flavor relationship can be systematically analyzed, a basis is provided for optimization of a low-sodium formula, flavor is enhanced while salty taste is increased and bitter taste is inhibited, and healthy and sustainable development of low-sodium meat products is promoted.

The invention relates to the field of tantalum powder mixed salt utilization, and discloses a method for recycling a byproduct fluorine-chlorine-sodium-potassium-containing mixed salt in tantalum powder production. The method comprises the following steps: (1) leaching fluorine, chlorine, sodium and potassium-containing mixed salt in the presence of a leaching agent to obtain a solid mixture A and a salt solution B; (2) sorting the solid mixture A obtained in the step (1) to obtain a tantalum pentoxide crude product and a sodium fluoride product; (3) reacting the salt solution B obtained in the step (1) with a composite fluorine removal agent to obtain a fluorine-containing solid and a salt solution C; and (4) crystallizing the salt solution C obtained in the step (3) to obtain a potassium chloride product and a salt solution D. The method can realize separation and recovery of valuable elements to the greatest extent.

The invention discloses an environment-friendly snow melting agent which is mainly prepared from the following raw materials in percentage by mass: 20-50% of potassium acetate, 10-16% of potassium chloride, 4-10% of calcium chloride and calcium acetate, 3-7% of magnesium chloride, 10-30% of an ice-resistant binder, 11-17% of a soil protective agent, 5-6% of cellulose and 3-9% of a plant protective agent. The ice-resistant binder is one or a combination of more of calcium acetate, magnesium acetate, potassium acetate and potassium formate, the mass ratio of calcium acetate to magnesium acetate is 3: (7.5-8.5), and the soil protective agent comprises 5-15% of diatomite and 10-20% of bentonite. Compared with the prior art, the environment-friendly snow melting agent disclosed by the invention can reduce the freezing point, prevent adhesion of an ice layer and a road surface and accelerate melting of an ice surface, so that a melted ice-snow-water mixture is easier to remove, effective recycling of resources is realized, pollution to the environment is reduced, and meanwhile, the treatment pressure of wastes is reduced.

To provide a method for simply and efficiently recovering potassium chloride from chlorine bypass dust recovered by a chlorine bypass device installed in cement clinker manufacturing equipment.SOLUTION: A method for recovering potassium chloride from chlorine bypass dust recovered from a chlorine bypass device installed in cement clinker manufacturing equipment, involves a mother liquor preparation process (S1) where the chlorine bypass dust is mixed with water to remove insoluble components to yield a mother liquor from which insoluble components have been removed, and a precipitate recovery process (S2) to evaporate moisture so that a portion of the mother liquor remains to recover precipitates that have crystallized in the remaining mother liquor.SELECTED DRAWING: Figure 1

The invention is applicable to the field of protoplast extraction application, and provides an enzymatic hydrolysate for Leymus chinensis protoplast extraction, which comprises the following components: 2.5-5% of cellulase R-10, 0.5-1% of macerozyme R-10, 0.7-1 M of mannitol, 5-9 mM of potassium chloride, 10-20 mM of MES buffer solution, 10-20 mM of calcium chloride, 0.05-0.2% of BSA, and the balance of ultrapure water. The invention also provides a preparation method and an application method of the enzymatic hydrolysate. In conclusion, according to the particularity of the leymus chinensis cell wall, an enzymatic hydrolysate formula is optimized, extraction conditions are adjusted, cell damage is effectively reduced, higher protoplast activity and quantity are obtained in leymus chinensis extraction, the extraction efficiency of the leymus chinensis protoplast is remarkably improved, and further conversion and gene expression research requirements are met.

To provide a cooling and stirring apparatus capable of obtaining potassium chloride-containing crystals having a large particle diameter, and to provide a method for producing the crystals.SOLUTION: A cooling and stirring apparatus 1 includes: a stirring tank 3 in which a liquid L is to be stored; a stirring blade 5 which is disposed inside the stirring tank 3 and rotates around a rotation axis to suck the liquid L from an axial direction and discharges the liquid L in a radial direction; a cylindrical body 4 which is disposed between the stirring blade 5 and a bottom surface L2 of the stirring tank 3 and has a cylindrical shape opening toward the stirring blade 5 and the bottom surface L2; and a cooling body 6 for cooling the liquid L. The method for producing crystals includes: a step of storing the liquid L in which a predetermined crystallization object is dissolved in the stirring tank 3 of the cooling and stirring apparatus 1; and a step of stirring the liquid by rotating the stirring blade 5 while lowering the temperature of the liquid L by the cooling body 6.SELECTED DRAWING: Figure 1

The invention relates to the field of potassium chloride purification, and provides an analytically pure potassium chloride purification method, which comprises: S1, dissolving industrial grade potassium chloride, adding a refining agent to remove impurities, and filtering to obtain a supersaturated potassium chloride solution; s2, performing variable-speed cooling crystallization treatment on the supersaturated potassium chloride solution to obtain a potassium chloride crystal mixture; s3, performing crystal layer pretreatment on the potassium chloride crystal mixture to obtain a potassium chloride crystal layer; s4, carrying out gradient spraying washing treatment on the potassium chloride crystal layer to obtain a potassium chloride crystal wet material; s5, drying the potassium chloride crystal wet material to obtain analytically pure potassium chloride; the method is simple in process equipment and mild in operation condition, and analytically pure potassium chloride can be stably prepared under the condition of conventional equipment.

The invention discloses a method for producing monopotassium phosphate by organic extraction of crude phosphoric acid, which comprises the following steps: carrying out desulfurization and defluorination on wet-process crude phosphoric acid, then removing heavy metals, adding the heavy metal removed crude phosphoric acid and extract liquor into a crude phosphoric acid extraction clarification tank, carrying out crude phosphoric acid extraction reaction, and carrying out phase separation to obtain an extraction phase and raffinate acid; washing the extract phase with purified phosphoric acid, feeding into a homogeneous pre-reaction tank, adding a potassium chloride solution, fully and uniformly mixing, feeding into a hydrochloric acid extraction reaction clarification tank for phase separation to obtain monopotassium phosphate slurry and a hydrochloric acid-containing extract phase, and performing solid-liquid separation on the monopotassium phosphate slurry to obtain monopotassium phosphate clear liquid; concentrating and crystallizing the monopotassium phosphate clear liquid to obtain a monopotassium phosphate product; the extract liquor is an alkylamine type extractant added with a diluent. The method is high in comprehensive economic value, the used extraction agent is excellent in comprehensive performance, and the prepared monopotassium phosphate product is good in quality.

The invention provides a preparation method of food-grade potassium chloride. The preparation method comprises the following steps: dissolving and filtering crude salt lake potassium to obtain a potassium chloride stock solution, adsorbing the potassium chloride stock solution by using a composite adsorbent comprising a carbon skeleton and grafting resin to obtain an adsorbed solution, carrying out negative pressure flash evaporation on the adsorbed solution to obtain a flash evaporation solution, and carrying out evaporation concentration, water washing and drying on the flash evaporation solution to obtain the food-grade potassium chloride. According to the method, crude potassium chloride prepared from a salt lake is used as a raw material, organic amine and inorganic ammonium impurities and heavy metal impurities such as lead and arsenic in the crude potassium chloride raw material are fully adsorbed by using a low-cost composite adsorbent, and then inorganic ammonium is converted into ammonia gas to be separated from a system through a negative pressure flash evaporation process; a small amount of soluble sodium salt and magnesium salt are washed through a washing process, indexes of the finally prepared potassium chloride product meet relevant national standards, equipment is simple, and industrial popularization is easy.

The invention discloses a low-calorie electrolyte beverage and a preparation method thereof, and belongs to the technical field of beverages. The low-calorie electrolyte beverage is prepared from the following components in parts by weight: 1.3 to 1.5 parts of plukenetia volubilis linneo extract, 0.02 to 0.03 part of vitamin C, 0.016 to 0.019 part of vitamin B2, 0.15 to 0.25 part of citric acid, 0.1 to 0.2 part of sodium citrate, 0.02 to 0.03 part of sodium chloride, 0.02 to 0.03 part of potassium chloride, 0.01 to 0.02 part of stevioside and 150 to 180 parts of deionized water. Sugar replacement is realized by adding sacha inchi soluble fibers to provide osmotic pressure, sugar substitutes are used for adjusting taste, sacha inchi peptides are extracted, the absorption efficiency of moisture after exercise is improved through combined action, and then the water supplementing effect is improved.

The invention discloses a special slow-release fertilizer for wheat in saline-alkali soil as well as a preparation method and application thereof, and relates to the technical field of slow-release fertilizers. The fertilizer contains various functional substances and a microbial agent, and specifically contains the following components in parts by weight: 5-10 parts of urea, 0.5-3 parts of potassium chloride, 5-10 parts of diammonium phosphate, 2-5 parts of triple superphosphate, 0.5-1 part of magnesium sulfate, 0.5-1 part of zinc sulfate, 0.2-0.5 part of boric acid, 0.2-0.4 part of resveratrol, 0.5-1 part of alginic acid, 0.3-0.5 part of fulvic acid and 1.0 part of a microbial mixed agent, and 0.1 to 0.3 part of a surfactant. According to the fertilizer, all the raw material components are reasonably compounded, the physicochemical properties of saline-alkali soil can be effectively improved while the growth requirement of wheat in the saline-alkali soil is met, and meanwhile the utilization rate of the fertilizer can be increased through the slow release effect, and damage to the environment is reduced.

The utility model relates to the technical field of pH meters, and discloses a pH electrode used in an ultrapure water occasion, which comprises an electrode tube, the bottom of the electrode tube is fixedly connected with a ground opening, the bottom of the electrode tube is sleeved with a sensitive film, the left side of the electrode tube is fixedly connected with a crank arm, the top of the crank arm is fixedly connected with a hose, and the hose is fixedly connected with the ground opening. A connecting ring is fixedly connected to the exterior of the hose, a limiting assembly is fixedly connected to the top of the connecting ring, an external ring is slidably connected to the exterior of the limiting assembly, a limiting ring is fixedly connected to the interior of the external ring, and a plurality of balls are rotatably connected to the interior of the limiting ring. According to the utility model, the external ring slides up and down, so that the external ring drives the limiting ring to be matched with the ball to slide in the rolling groove to extrude the hose on the rear side of the lantern ring, and due to the property of the hose, the ball shrinks to limit the flow rate of a potassium chloride solution in the hose.

The invention discloses a method for adjusting the pore opening degree of Shanghai green, and belongs to the technical field of plant detection. Shanghai leaves are placed in 20mL of open liquid containing (1) 0.5% potassium chloride and 100 [mu] M / L calcium chloride or (2) 0.5% potassium chloride and 50 [mu] M / L brassinolide or (3) 0.5% potassium chloride and 10 [mu] M / L cytokinin or (4) 0.5% potassium chloride and 5 [mu] M / L gibberellin or (5) 0.5% potassium chloride and 100 [mu] M / L methyl jasmonate, culture is performed under illumination, and the illumination time is set to be 5h, so that the pore opening degree of Shanghai is remarkably increased. Compared with a control group (containing 0.5% of potassium chloride), the pore openness of the treatment is respectively increased by 33.5%, 43.5%, 43.4%, 27.1% and 70.2%. The method disclosed by the invention lays a technical foundation for rapidly screening out the exogenous environmental stimulation factor (environical stimuli) capable of increasing the opening degree of the pore.

The utility model provides a system for treating wastewater discharged during potassium salt production in the chlor-alkali industry. According to the utility model, wastewater is separated into produced water containing sodium chloride and potassium chloride and concentrated water containing sodium sulfate by the nanofiltration assembly in advance, so that the content of sodium chloride in the wastewater is reduced, the wastewater can be changed into the produced water for producing sodium chloride, and then the produced water is evaporated and crystallized by the sodium chloride evaporation and crystallization assembly to obtain a byproduct sodium chloride; meanwhile, in order to improve the purity of the byproduct sodium chloride, mother liquor is discharged when the byproduct sodium chloride is prepared, and at the moment, the potassium chloride freezing assembly cools the mother liquor and extracts the byproduct potassium chloride, so that the potassium chloride in the wastewater is indirectly recycled, and therefore, the potassium chloride in the wastewater is recycled. The resource waste is effectively reduced; the utility model belongs to the technical field of wastewater treatment systems.

The invention discloses a desert blue-green algae large-scale culture nutrient solution and application thereof. The desert blue-green algae large-scale culture nutrient solution is prepared from urea, monopotassium phosphate, potassium chloride, sodium bicarbonate and medium trace element fertilizer. Wherein the concentrations of the urea, the monopotassium phosphate, the potassium chloride, the sodium bicarbonate and the medium trace element fertilizer are 500-550 mg / L, 20-30 mg / L, 10-15 mg / L, 10-15 mg / L and 10 mg / L respectively. The invention provides a nutrient solution special for large-scale cultivation of desert blue-green algae, and solves the technical problems of high cost, low yield and low blue-green algae purity of large-scale cultivation of desert blue-green algae in the prior art. The nutrient solution composition provided by the invention can balance each nutrient composition, so that the nutrient composition can be more suitable for the nutritional requirements of the growth of the desert blue-green algae.

The application discloses a kind of compositions, reagents and its detection method for high-throughput gene sequencing, belong to gene sequencing technical field, the composition includes Tris-HCl buffer 80-120 parts, potassium chloride 40-60 parts, ammonium sulfate 10-20 parts, magnesium chloride 15-25 parts, dNTPs mixed solution 30-50 parts, heat-stable DNA polymerase mutant 8-15 parts, PCR promoter complex 5-12 parts, modified iridium quinoline ketone complex 1-5 parts, glycerol 150-250 parts, Tween-20 1-3 parts, EDTA disodium salt 0.5-2 parts and nuclease-free ultrapure water, by introducing the modified iridium quinoline ketone complex of innovation, effectively solve the technical problems of low amplification efficiency, poor multiplex PCR reaction uniformity and high non-specific amplification background for high GC content, complex secondary structure genomic template, significantly improve the specificity of amplification, uniformity and the quality and reliability of final sequencing data.

A space purification device (11) is provided with: a storage unit (13) for storing an aqueous solution (hereinafter referred to as electrolyte (13a)) containing sodium chloride or potassium chloride inside a housing; an electrolysis unit (14) that is provided inside the storage unit (13) and that generates an aqueous hypochlorous acid solution (13b) by electrolyzing the electrolyte solution (13a); an air introduction unit (15) that sucks air from the outside of the housing and introduces the air into the reservoir unit (13); and an air release unit (16) for releasing air in a space (23) above the hypochlorous acid aqueous solution (13b) in the storage unit (13) to the outside of the housing. Furthermore, the electrolysis unit (14) generates an aqueous hypochlorous acid solution (13b) by electrolyzing the electrolyte solution (13a) in a state in which sodium chloride or potassium chloride (hereinafter referred to as electrolyte (13c)) is deposited in the electrolyte solution (13a).