9 results about "Potassium sulfite" patented technology

The application discloses a method for preparing a fulvic acid type liquid microbial fertilizer through minute-level composting of breeding wastewater, which comprises the following steps: adding biochar A, potassium ferrate and potassium sulfite into pig farm breeding wastewater, stirring for 10-20 minutes, and uniformly mixing to obtain liquid fertilizer B rich in fulvic acid-like substances; and compounding bacillus subtilis, DX-9 and AM microbial agents into the liquid fertilizer B to prepare a fulvic acid liquid microbial fertilizer C. The method uses biochar, potassium ferrate and potassium sulfite to realize rapid composting of the breeding wastewater within 10 minutes, and prepares a high-efficiency liquid fertilizer rich in fulvic acid; and the post-compounding of growth-promoting microbial agents (including bacillus subtilis, DX-9 and AM microbial agents) can enhance the fertilizer efficiency and improve the disease resistance of crops. The method has the advantages of high treatment efficiency and small occupied area, realizes high-value utilization of livestock and poultry breeding wastewater, can effectively promote crop growth, and helps the green and healthy development of the livestock industry, and has wide application and industrialization prospects in the fields of agriculture, forestry and animal husbandry.

The invention relates to the technical field of blueberry wine brewing, in particular to a mixed bacteria fermentation blueberry wine brewing process and application thereof, and the mixed bacteria fermentation blueberry wine brewing process comprises the following steps: raw material pretreatment: unfreezing, picking and crushing blueberries to obtain blueberry pulp; performing enzymolysis: adding potassium metabisulfite and pectinase into the blueberry pulp, and performing enzymolysis at 48-52 DEG C for 1-2 hours; sugar adjustment: adjusting the sugar degree of the blueberry pulp to 14-22Bx, and adjusting the pH value to 3.5-4.5; inoculating yeast: inoculating activated mixed yeast strains into the blended blueberry pulp, wherein the mixed yeast strains are RW angel wine yeast and 71B yeast; fermentation and post-treatment: fermenting the inoculated blueberry pulp with residues, filtering after fermentation to obtain the blueberry fruit wine, and through synergistic fermentation of RW angel wine yeast and 71B yeast, generating aroma substances such as esters and alcohols richer than that of single-bacterium fermentation, so that the wine body has strong fruit aroma, mellow wine aroma and soft fermentation aroma, is full in layering sense, and has a good taste. The problems that traditional fruit wine is thin in taste and serious in homogenization are effectively solved.

The invention provides a method and equipment for preparing calcium sulfate from desulfurization residues, and relates to the field of calcium sulfate nonmetallic mineral product manufacturing. The method for preparing calcium sulfate by utilizing the desulfurization residues comprises the following steps: S1, mixing the desulfurization residues and a potassium carbonate solution according to a solid-to-liquid ratio of 1: (0.8-10), and stirring for 0.5-12 hours at the temperature of 25-80 DEG C to obtain calcium carbonate residues and potassium sulfite mother liquor; s2, mixing the calcium carbonate residues with a 2-5 mol / L acetic acid solution, and stirring for 10-360 minutes at the temperature of 25-80 DEG C to obtain a calcium acetate mother solution and filter residues. According to the method for preparing calcium sulfate by utilizing the desulfurization residues, calcium and sulfur elements in the waste resource desulfurization residues are effectively separated and converted into calcium sulfate whiskers and potassium sulfate with market value. And cascade conversion and high-value utilization of main valuable elements in the desulfurization slag are achieved, and economic benefits are remarkably improved. Meanwhile, the stockpiling or landfill amount of the desulfurization slag is reduced, the environmental burden is relieved, and secondary pollution possibly caused by a traditional treatment mode is avoided.

The present application relates to the technical field of pyrophosphate heavy metal treatment, and discloses a treatment method for pyrophosphate heavy metal wastewater and application thereof, the treatment method for pyrophosphate heavy metal wastewater comprises the following steps: adding waste manganese slag into the pyrophosphate heavy metal wastewater, adding a hydrolysis agent, fully reacting, and obtaining a mixed solution; the hydrolysis agent comprises at least one of potassium peroxymonosulfate, potassium persulfate, potassium sulfite, hydrogen peroxide and peroxyacetic acid. Wherein, the waste manganese slag serves as a reaction carrier, provides a catalytic surface and an adsorption site for degradation of pyrophosphate heavy metal complexes; the hydrolysis agent is activated under the catalysis of the manganese slag, attacks the pyrophosphate P-O-P bond to hydrolyze into orthophosphate, simultaneously destroys the metal complex structure, releases metal ions, and subsequently adds iron salt for co-precipitation, thereby breaking through the problems of slow treatment and low efficiency of traditional treatment methods for stable complexes.

The application belongs to the technical field of potassium sulfite preparation, and discloses a potassium sulfite preparation system and a preparation method. The preparation system comprises: an absorber, which is used for forming an absorption solution containing potassium bisulfite by controlling the pH of a solution to be less than or equal to 6 through a potassium hydroxide absorption method; an oxygen removal device, whose inlet is connected with the outlet of the absorber; a regulating tank, which is connected with the outlet of the oxygen removal device, is used for supplementing potassium hydroxide and controlling the pH of a solution to be greater than or equal to 8, and obtains a potassium sulfite solution through a reaction; an evaporation crystallizer, whose inlet is connected with the outlet of the regulating tank; a solid-liquid separator, whose inlet is connected with the outlet of the evaporation crystallizer, is used for separating a slurry after crystallization into potassium sulfite solids and a crystallization mother liquor; and a dryer, which is used for drying the potassium sulfite solids to obtain a potassium sulfite product. The application can solve the problems of the influence of carbon dioxide on the quality of the potassium sulfite product and the oxidation of the potassium sulfite, and can improve the purity of the potassium sulfite product.

The invention provides a composite potassium metabisulfite embedded slow-release carrier as well as a preparation method and application thereof, and belongs to the technical field of embedded carriers. The composite slow-release carrier embedded with the potassium metabisulfite comprises the potassium metabisulfite, a middle layer wrapping the outer surface of the potassium metabisulfite and a shell layer wrapping the outer surface of the middle layer. The middle layer is made of a film made of a cellulose material; the material of the shell layer is a film obtained by carrying out cross-linking reaction on passion fruit peel polysaccharide. According to the slow-release carrier for compositely embedding the potassium metabisulfite, the potassium metabisulfite serves as a core, the potassium metabisulfite is sequentially wrapped by a film formed by a cellulose material and a film obtained by cross-linking reaction of passion fruit peel polysaccharide, and the two materials are selected as a middle layer and a shell layer respectively; during use, along with dissolution or swelling of the shell layer and the middle layer, dual release control is realized, so that the embedding carrier has an excellent effect of slowly releasing sulfur dioxide.

The invention relates to the technical field of pyrophosphate heavy metal treatment, and discloses a pyrophosphate heavy metal wastewater treatment method and application thereof, the pyrophosphate heavy metal wastewater treatment method comprises the following steps: adding waste manganese slag into pyrophosphate heavy metal wastewater, adding a hydrolytic agent, and fully reacting to obtain a mixed solution; the hydrolytic agent comprises at least one of potassium hydrogen peroxymonosulfate, potassium persulfate, potassium sulfite, hydrogen peroxide and peracetic acid. Wherein the waste manganese slag is used as a reaction carrier and provides a catalytic surface and an adsorption site for degradation of the pyrophosphoric acid heavy metal complex; the hydrolytic agent is activated under the catalysis of the manganese slag, attacks a pyrophosphate P-O-P bond to be hydrolyzed into orthophosphate, destroys a metal complex structure, releases metal ions, and subsequently adds iron salt for co-precipitation, so that the problems of slow treatment and low efficiency of a stable complex in a traditional treatment method are solved.

The invention discloses a method for preparing blueberry fruit wine by low-temperature fermentation and the blueberry fruit wine prepared by the method, the method comprises the following steps: crushing blueberries, pulping, adding potassium metabisulfite, pectinase and beta-glucosidase, performing vacuum pulse treatment, and squeezing to obtain blueberry juice; adjusting the content of soluble solids in the blueberry juice, then carrying out micro-nano bubble hydration treatment, then adding a compound fermentation inoculant and mannose glycoprotein, carrying out alcoholic fermentation, and carrying out filter pressing to obtain blueberry fermentation liquor; adding polyethylene glycol modified EPS into the fermentation liquor, standing for clarification, filtering, supplementing potassium metabisulfite, accelerating aging by a pulsed electric field, filtering by a microporous membrane, and filling to obtain a finished product. Through collaborative optimization of enzymolysis, fermentation and aging accelerating technologies, the problems of low low-temperature fermentation efficiency, insufficient release of flavor substances and the like are effectively solved, the finished fruit wine is clear, transparent and bright, stable in color and luster, full in functional ingredient retention, rich and coordinated in flavor and short in production period, and a scientific and feasible innovative path is provided for industrial production of the blueberry fruit wine.

The invention relates to an environment-friendly cyanide-free electroplating solution and an electroplating process thereof. Comprising the following components in parts by mass: 55 g / L to 130 g / L of copper sulfate, 10 g / L to 20 g / L of copper chloride, 14 g / L to 34 g / L of copper pyrophosphate, 15 g / L to 25 g / L of sodium chloride, 20 g / L to 40 g / L of potassium ethylene diamine tetraacetate, 0.01 g / L to 0.02 g / L of sodium citrate, 12 g / L to 22 g / L of sodium hydroxyethylidene diphosphonate, 8 g / L to 12 g / L of diethylenetriamine, 6 g / L to 10 g / L of potassium sulfite, 4 g / L to 8 g / L of methyl pentynol, 10 g / L to 20 g / L of ammonium acetate, 9 g / L to 17 g / L of anisaldehyde, 7 g / L to 15 g / L of sodium nitrate, 8 g / L to 16 0.1 g / L to 0.3 g / L of a brightening agent, 2 g / L to 4 g / L of a dispersing agent, 0.05 g / L to 0.1 g / L of a hardness conditioning agent and 2 g / L to 5 g / L of a surface active agent. According to the environment-friendly cyanide-free electroplating solution, the influence on the environment is greatly reduced in the production process, and workers can be prevented from being poisoned by cyanide.