141results about How to "Guaranteed pH" patented technology

The invention relates to a conductive screening material, in particular to a conductive low-smoke zero-halogen flame retarding and oil resisting cable sheath material and a preparation method thereof. The conductive screening material comprises the following basic components: 100 parts of ethylene-vinyl acetate rubber, 50-100 parts of magnesium hydroxide, 50-80 parts of conductive black, 10-30 parts of graphite powder, 5-10 parts of zinc borate, 10-25 parts of plasticizer, 2-5 parts of lubricant, 1-2 parts of antiager, 10-30 parts of flame retarding synergist, 2-3 parts of vulcanizer and 1-2 parts of vulcanization assistant. The preparation method comprises the four steps of material preparation, mixing, extrusion and tabletting. The conductive low-smoke zero-halogen flame retarding and oil resisting cable sheath material has the advantages of high conductivity, good oil resistivity, excellent flame retarding effect, no peculiar smell, easy stripping and high heat resistance level, and can pass the environment protection authentication of RoHS (Restriction of the use of certain Hazardous Substances Registration), REACH (Evaluation, Authorization and Restriction of Chemicals) and the like.

The invention discloses a method for regeneration of a spent denitration catalyst, and relates to a composition for a cleaning solution and an application thereof, and an activity recovering method for a spent SCR catalyst. The invention is used for solving the technical problems in the prior art that a lost catalyst active component in a regeneration process cannot be selectively supplemented and an iron rust defect of a metal module framework cannot be effectively eliminated. The method comprises the following steps: one, dust cleaning; two, spraying; three, cleaning; four, re-cleaning; five, acidification; six, pre-drying; and seven, activity supplementing. Cleaning media of sodium hydroxide and potassium hydroxide can dissolve inactivated V2O5 and toxic element arsenic on the surface of the catalyst. While the method can selectively supplement the catalyst active component (TiO2), the iron rust removal rate of the metal module framework reaches 19% to 24%. The invention belongs to the field of spent denitration catalyst regeneration.

The present invention provides devices and methods for stabilizing bicarbonate-based solutions for peritoneal dialysis or hemofiltration. The bicarbonate-based solutions of the present invention are formulated and stored in at least two parts - an alkaline bicarbonate concentrate and an acidic concentrate. The alkaline bicarbonate concentrate is adjusted to have a pH of about 8.6 to 10.0. The acidic concentrate is adjusted to have a stable, acidic pH ranging from about 1.0 to 3.0. Upon mixing, although some variation in the pH of the mixed bicarbonate solution exists, the inventors have discovered that with the appropriate selection of the parameters of the concentrates, the pH of the mixed solution is always within an acceptable physiological range.

The invention relates to agricultural fertilizer. Organic functional bacterial fertilizer containing tobacco waste and capable of regulating pH value of alkaline soil includes the following components: 5-60 wt% of tobacco waste, 10-50 wt% of livestock and poultry feces, 10-20 wt% of a pH regulator, 5-15 wt% of humic acid and 0.2-3 wt% of biological bacterial agent. The preparation method of the organic functional fertilizer is as below: crushing the tobacco waste into a powder, and adjusting carbon to nitrogen ratio to 25:1; fermenting livestock and poultry manure under the condition of 60-80 DEG C for 7 days; crushing the pH regulator into a powder; uniformly mixing the three and conducting stacking fermentation; and drying and screening the fermentation materials and adding humic acid and biological bacterial agent to produce the organic functional fertilizer. The invention has the effects of regulating pH value of alkaline soil and alleviating the toxicity of heavy metals to crops.

The invention relates to a method for extracting high-purity hemoglobin from pig blood, and on the condition of 2 to 6 DEG C, the following operations are carried out sequentially: first, anticoagulant pig blood is used for preparing packed red blood cells; hypotonic solution is used for dissolving packed red blood cells, in which inert gas is pumped, antioxidant is added, the pH value of the solution is adjusted and protective agent and antibacterial drugs are added, and after high-speed centrifugation, crude hemoglobin solution is obtained; toluene is added into the crude hemoglobin solution which is extracted in low temperature and the hemoglobin solution in the lower layer is extracted for dialysis; after being frozen and dried the hemoglobin solution after dialysis is then dissolved into high-concentration and small-volume liquid which is then purified by a sephadex chromatography column as a sample and high-concentration hemoglobin with even molecular weight is obtained to be frozen and dried in vacuum after being filtered for removing pyrogen so as to prepare high-concentration hemoglobin dry powder with no matrix or pyrogen. The hemoglobin obtained through the method of the invention has no matrix or pyrogen, which can be further modified to produce blood substitute safely and effectively and the operation is simple; the cost is low.

The invention provides a continuous flow method for measuring total alkaloid in tobacco or tobacco products. In the method, potassium thiocyanate and sodium dichloro isocyanurate are adopted to carry out reactions to generate cyanogen chloride on line. The cyanogen chloride can carry out reactions with total alkaloid (calculated in the form of nicotine) in tobacco or tobacco products to break off the pyridine rings of nicotine, and then further carries out reactions with p-aminobenzene sulfonic acid. The reaction products are measured by a chromometer at 460 nm. The method uses a buffer system to control the pH value of the reaction system in a range of 6.0 to 7.5, and the buffer system is composed of a buffer solution A and a buffer solution B. The buffer solution A is prepared by the following steps: weighing disodium hydrogen phosphate and trisodium phosphate, placing the weighed substances in a beaker, dissolving the substances with water, transferring the solution to a volumetric flask (1L), and adding water into the volumetric flask until the water reaches the scale. The buffer solution B is prepared by the following steps: weighing p-aminobenzene sulfonic acid, disodium hydrogen phosphate, sodium dihydrogen phosphate, and sodium citrate, placing the weighed substances into a beaker, dissolving the substances with water, transferring the solution to a volumetric flask (1L), and then adding water into the volumetric flask until the water reaches the scale.

The invention relates to an edible plant source fresh-cut fruit and vegetable coating film preservative. The edible plant source fresh-cut fruit and vegetable coating film preservative is prepared from the following components in percentage by weight: 3 to 10 percent of fresh ginger extracting liquid, 0.2 to 0.5 percent of low-molecular chitosan, 2 to 5 percent of citric acid, 0.03 to 0.1 percent of tea polyphenol, 0.01 to 0.1 percent of resveratrol, and the balance of deionized water, wherein the sum of the components in percentage by weight is 100%. The edible plant source fresh-cut fruit and vegetable coating film preservative has the advantages that by adding the antioxidants of the tea polyphenol, the resveratrol, the citric acid and the like into a chitosan coating film, the browning speed of fresh-cut fruits and vegetables is effectively decreased, the storage time of the fruits and the vegetables is effectively prolonged, and the activities of various antioxidant active matters and antioxidant enzymes in the fruits and the vegetables are improved; the added biological antioxidants have no poison and harm, and can be eaten, the injury to a human body is avoided, and the preserving effect is better.

The invention discloses a sieve-plate tower used for sintering machine flue gas desulfurization and a desulfurization process thereof, and belongs to the field of resource and environment protection. The device comprises an absorption tower, wherein the absorption tower is provided with a flue gas inlet, a flue gas outlet and a desulfurizer inlet, a demisting layer, a spraying layer, a sieve plate and a pulp chest are sequentially arranged in the absorption tower from top to bottom, the desulfurizer inlet is positioned above the flue gas inlet, the sieve plate is positioned between the desulfurizer inlet and the flue gas inlet, an overflow weir is arranged above the sieve plate, the sieve plate is divided into an overflow area and a gas liquid contact area by the overflow weir, sieve pores of the sieve plate are arranged in the gas liquid contact area, the gas liquid contact area is positioned at one side of the sieve plate close to the desulfurizer inlet, and an overflow pipe is arranged under the overflow area. The desulfurization process comprises the following steps that: sintering machine flue gas enters the absorption tower to be reacted with the desulfurizer at the gas liquid contact area and then is discharged after sulfur dioxide is removed, and desulfurized pulp generated by the reaction of the flue gas and the desulfurizer overflows into the pulp chest of the absorption tower. The invention is used for removing the sulfur dioxide in the sintering machine flue gas, the flue gas desulfurization efficiency is improved, and the desulphurization energy consumption is reduced.

The present invention discloses a method for preparing a metal organic framework material. The method comprises: (1) preparing a metal precursor solution A; (2) preparing an organic ligand solution B; (3) respectively conveying the solutions A and the solution B into a micro-channel reactor module I to carry out in-situ generation of a MOFs crystal seed, carrying out a reaction for a certain time, and conveying the material liquid into a module II; (4) conveying the solution B into the module II when the material liquid enters the module II, carrying out crystal seed induction synthesis, carrying out a reaction for a certain time, and conveying the material liquid into a module III; (5) conveying a solvent C into the module III when the obtained material liquid enters the module III, and carrying out a solvent activation reaction; and (6) carrying out solid-liquid separation on the obtained suspension, washing the solid by using ethanol, and drying to obtain the product. According to the present invention, the multi-module micro-channel reactor is used, the MOFs crystal seed is subjected to in-situ generation in the module I, the crystal seed induction synthesis is performed in the module II, and the solvent activation reaction is completed in the module III, such that the advantages of simple and fast preparation process, narrow product particle size distribution, good dispersion and the like are provided.

The invention provides a lactobacillus preservative capable of increasing the survival rate of liquid lactobacilli at the room temperature and an application of the lactobacillus preservative. With adoption of a lactobacillus body and nutrient suspension technology and a sustained release technology as well as addition of cream, linoleic acid, lecithin, glycerol monostearate and a stabilizer to a medium and regulation of pH value, the storage period of the liquid lactobacilli with high live bacteria quantity is prolonged, the problem of rapid reduction of liquid lactobacilli with high live bacteria quantity due to reduction of the content of nutrients and storage at the normal temperature is solved, and the lactobacilli really play a role in preventing and treating diarrhea and regulating balance of the intestinal flora during use; the lactobacillus preservative as a green, safe and effective microecological agent is applied and popularized.

The invention relates to a compound orthophaladetyde phenyl ammonium chloride disinfectant and a preparation method thereof. The compound orthophaladetyde phenyl ammonium chloride disinfectant comprises the following components by weight: 0.2-1 wt% of orthophaladetyde, 0.05-0.5 wt% of phenyl ammonium chloride, 0.1-1 wt% of dipotassium phosphate, 0.1-1 wt% of monopotassium phosphate, 0.1-0.3 wt% of sodium polyacrylate, 0.05-0.2 wt% of antioxidant, 0.01-0.1 wt% of disodium ethylene diamine tetraacetic acid and the balance of water. The preparation method of the compound orthophaladetyde phenyl ammonium chloride disinfectant comprises the following steps of: adding the orthophaladetyde into water according to the content and components, and stirring for dissolving; adding the dipotassium phosphate, the monopotassium phosphate, the sodium polyacrylate, the antioxidant and the disodium ethylene diamine tetraacetic acid in sequence, and stirring for dissolving; and adding the phenyl ammonium chloride, and stirring for dissolving to obtain the compound orthophaladetyde phenyl ammonium chloride disinfectant. The disinfectant is applicable to the high-level disinfection of thermolabile medical apparatus and instruments. The disinfectant has no pungent smell, safety, low toxicity, stable properties and convenient use.

The invention relates to a production method of an inorganic powder material and in particular relates to a production method of alkaline silica. The production method comprises the following operation steps: (1) refining a water glass solution; (2) carrying out a synthetic reaction on precipitated silica; (3) carrying out filter pressing and washing on reaction slurry; (4) slurrying: conveying afilter cake to a beating tank by a belt conveyer, and carrying out slurrying in two stirring modes including a high-speed stirring mode and low-speed stirring mode to provide uniform slurry for spraydrying; and (5) drying process: after drying the slurry by a spray drying tower, carrying out pulverization by using a mechanical pulverizer until the particle size is smaller than 15mu m, and carrying out packaging and storage after carrying out collection by using a bag pulse deduster. By improving a traditional precipitation production process of silica and adopting a way of optimizing processparameters and optimally selecting an adjuvant in the production process disclosed by the invention, the pH value of a product ranges from 7.5 to 11, and the specific surface area ranges from 50m<2> / gto 110m<2> / g, so that an application of the product to special rubber is guaranteed.

The invention discloses an assembly type grass-planted concrete precast block and a construction method of an ecological bank adopting the same. The assembly type grass-planted concrete precast blockis composed of a convex block body and concave block bodies, wherein the convex block body and the concave block bodies are connected into a whole, the convex block body is located in the middle, theplurality of concave block bodies are arranged next to the convex block body, and the convex block body and the concave block bodies are made of ecological concrete with ecological holes; greening soil coverings suitable for the growth of herbaceous plants are laid on the upper surface of the convex block body and the upper surfaces of the concave block bodies respectively, the herbaceous plants take roots on the greening soil coverings and in the convex block body and the concave block bodies; and the concrete precast blocks can be spliced and clamped together. Meanwhile, the invention provides a construction method of the ecological bank adopting the assembly type grass-planted concrete precast block according to the characteristics of the assembly type grass-planted concrete precast block. The assembly type grass-planted concrete precast block has the advantages that the structure is reasonable, the coverage rate of the planted-grass is high and the construction is convenient and rapid; and the assembly type grass-planted concrete precast block can be used for ecological protection of medium and small rivers, and can also be used for ecological protection of channels, lakes, reservoirs and ponds.

The invention relates to an o-phthalaldehyde disinfectant and a preparation method thereof. The o-phthalaldehyde disinfectant comprises the following components in percentage by weight: 0.2 to 1 percent of o-phthalaldehyde, 0.1 to 0.5 percent of salicylic acid, 0.5 to 1.5 percent of dodecyldimethylbenzylammonium chloride, 1 to 10 percent of ethanol, 0.1 to 1 percent of disodium hydrogen phosphate, 1 to 10 percent of ethanol, 0.1 to 1 percent of sodium dihydrogen phosphate, 0.1 to 0.5 percent of inhibitor, 0.01 to 0.1 percent of ethylene diamine tetraacetic acid and the balance of water. The method for preparing the disinfectant comprises the steps of: adding the o-phthalaldehyde into the ethanol according to the content and component, stirring and mixing the materials; adding water into the materials and stirring the mixture; and adding the dodecyldimethylbenzylammonium chloride, the disodium hydrogen phosphate, the sodium dihydrogen phosphate, the inhibitor and the ethylene diamine tetraacetic acid into the mixture in sequence and stirring the mixed solution to allow the added materials to dissolve to obtain the o-phthalaldehyde disinfectant. The disinfectant has the advantages of no pungent smell, safety, low toxicity, stable property and convenient use, can be used for high-level disinfection of the heat-labile medical equipment and is particularly applicable to an endoscope automatic washing and disinfecting machine to perform high-level disinfection on an endoscope.

The invention relates to a production method of high-resistivity titanium dioxide, which belongs to the field of titanium dioxide production. The invention provides the production method of the high-resistivity titanium dioxide, which adopts a sulfuric acid method titanium dioxide production process and comprises the following steps of hydrolyzation of titanium liquid, washing, salt treatment, and calcination plus milling, wherein a potassic substance is added in the salt treatment step; the addition quantity of the potassic substance occupies 0.39 to 0.47 wt% of the titanium dioxide content; and the potassic substance is potassic alkali or salt. The resistivity of the titanium dioxide produced by utilizing the method provided by the invention is higher than the resistivity of the titanium dioxide produced in the prior art by 900 Omega.cm, and meanwhile, the brightness, the whiteness, the pH (potential of hydrogen) of the titanium dioxide are guaranteed to satisfy the operation requirements.

The invention relates to an aluminum and aluminum alloy normal-temperature environmental-friendly sealant which is prepared from the following raw materials with the mass weight, accounting for 1L: 10-20g of hole sealing salts, 0.5-1.5g of an oxidant, 0.3-2g of a stabilizer, 0.2-6g of an accelerator, 0.2-3g of a wetting agent, 2-15g of a pH buffer and deionized water with the addition amount to be the amount obtained by after mixing the other raw materials, adding the deionized water, and fixing the volume to 1L. The aluminum and aluminum alloy normal-temperature environmental-friendly sealant has the advantages that in the sealant, each component has the unique action in a formula, so that the permeability is good, the hole sealing speed is rapid, and the hole sealing quality is high; the sealant is good in chemical stability, does not contain elements including fluorine and nickel, is safe and environment-friendly, is easy in biodegradation and does not pollute the environment; in addition, the sealant is simple in maintenance, clean in operation environment and harmless to a human body; and meanwhile, the hole sealing technology is simple and is low in energy consumption.

The invention discloses a composition with anti-allergy, anti-inflammatory and soothing effects as well as a preparation method and application thereof, and the composition comprises the following components in percentage by mass: 5-30% of lactobacillus / soybean milk fermentation product filtrate, 5-25% of kava extract, 0.5-5% of dipotassium glycyrrhizinate, 5-25% of oat kernel extract, 1-5% of glycosylglycerol and the balance of solvent. The composition provided by the invention achieves the effects of anti allergy, anti-inflammatory and soothing from the aspects of skin micro-ecological barrier recovery, skin physical barrier recovery, nerve calming and soothing, inflammation inhibition and the like.

The invention discloses a detecting method of specific capacity of negative electrode material of a lithium ion battery after circulation. The detecting method comprises the following steps: 1) discharging the lithium ion battery after circulation, then dismantling the battery and taking out a negative electrode plate; 2) washing the negative electrode plate a plurality of times immediately using organic solvent and drying, then putting the negative electrode plate in acidic solution and dipping sufficiently, enabling a negative electrode membrane on the negative electrode plate to fall in the acidic solution; 3) taking out a current collector of the negative electrode plate, then carrying out solid-liquid separation upon the acidic solution in which the negative electrode membrane is dissolved, obtaining solid substance, washing the solid substance repeatedly using de-ionized water till the pH value of filtrate is 6-7, drying in vacuum condition, then grinding and sieving, obtaining graphite powders; and 4) making the lithium ion battery by using the graphite powders as negative electrode material, stewing for two hours and then measuring the specific capacity of the lithium ion battery. In comparison with the prior art, the detecting method has the advantages of low requirement on the environment and high accuracy.

The invention discloses a method for preparing a nanoscale Cu-based metal organic framework material. The method includes the steps: (1) preparing a copper precursor solution A; (2) preparing an organic ligand solution B; (3) sending the solution A and the solution B into a micro channel reactor module I at a certain flow speed, generating a Cu-MOFs crystal seed in situ, and after the reaction is carried out for a certain time, sending the product material liquid into a module II; (4) when the product material liquid enters the module II, sending the solution B into the module II at a certain flow speed, carrying out crystal seed induced synthesis reaction, and after the reaction is carried out for a certain period of time, sending the product material liquid into a module III; (5) allowing the material liquid prepared in the step (4) to enter the micro channel reactor module III, and carrying out secondary crystallization reaction to synthesize a Cu-MOFs material; and (6) carrying out solid-liquid separation of the Cu-MOFs suspension prepared in the step (5), and allowing the filtrate to return to the micro channel reactor module II at a certain flow speed to participate in secondary crystallization reaction; and washing the solid with ethanol, and drying to obtain the product. The Cu-MOFs material is prepared by a multi-module micro channel reactor, and the method has the advantages of simple and fast preparation process, good product performance and the like.

The invention provides a thallium-containing wastewater adsorption material and a preparation method thereof. The adsorption material comprises the following raw material components: chloromethyl polystyrene microspheres and thiourea. The chloromethyl polystyrene microspheres comprise the following raw materials: polystyrene microspheres, an organic solvent and tin tetrachloride. The preparation method comprises the following steps: 1, preparing polystyrene microspheres; step 2, preparing chloromethyl polystyrene microspheres; step 3: preparation of the adsorption material: adding the chloromethyl polystyrene microspheres and thiourea into absolute ethyl alcohol according to a mass ratio of 1:2, carrying out heating reflux for 2 hours to prepare an intermediate mixed solution, hydrolyzingthe intermediate mixed solution for 12 hours by using a 50% sodium hydroxide solution under the protection of nitrogen to prepare a mixed solution, and cooling the mixed solution, alternately cleaningthe mixed solution by using distilled water and a 2 mol / L hydrogen chloride aqueous solution, and drying the mixture to prepare the adsorption material. The adsorption material can be used for treating the concentration of thallium in wastewater to be less than 5 [mu] g / L and ensures that the thallium-containing wastewater reaches the industrial discharge standard.

The invention discloses a preparation method for a high-activity metal organic framework material. The method includes the steps: (1) preparing a metal precursor solution A; (2) preparing an organic ligand solution B; (3) sending the solution A and the solution B into a micro channel reactor module I, and generating an MOFs crystal seed in situ; (4) dissolving a metal in a state of metal powder, nano oxide or metal salt to obtain a solution C, when the material liquid obtained in the step (3) enters a module II, sending the solution C into the module II, and carrying out a metal ion in-situ synthesis reaction; (5) allowing the material liquid of the step (4) to enter a module III, sending the solution B into the module III, and carrying out crystal seed induced synthesis; (6) when the material liquid of the step (5) enters a module IV, sending a light reduction sacrificial agent D into the module IV; (7) when the material liquid obtained in the step (6) enters a module V, carrying out metal reduction reaction by sun illumination; and (8) carrying out solid-liquid separation, washing, and drying to obtain the product. The MOFs material prepared by the multi-module micro channel reactor has the advantages of simple and fast preparation process and good product activity.

The invention discloses a palonosetron injection and the preparation method. The essential component of the injection comprises: hydrochloric acid palonosetron 0. 01-0. 05 mg / ml, glucose 45-55 mg / ml, aminoacetic acid 0. 2-10 mg / ml. The preparation method comprises following steps: (1) dissolving hydrochloric acid, glucose, and aminoacetic acid in proper amount of water for injection, moderating pH value, adding water for injection to meet the demand; (2) filtering with micro-porous membrane; (3) packing filtered solution, aerating inert gas or carbon dioxide, pressing, covering. The product is characterized by low production cost and good stability.

The invention provides a production method of special titanium dioxide for decorative base paper, belonging to the technical field of titanium dioxide. The production method comprises the following steps of A, preparing titanium dioxide into 500-600g / L TiO2 sizing agent by using desalted water, adding silicate, grinding, regulating pH of the sizing agent to be 9.5-10, heating up to 40-80 DEG C, then diluting to obtain 300+ / -10g / L TiO2 sizing agent, and keeping temperature at 40-80 DEG C; B, quickly adding an acid aluminum salt solution into the TiO2 sizing agent diluted in step A, and stirring to obtain mixed sizing agent; C, slowly adding a phosphorus-containing compound solution into the mixed sizing agent of step B, then regulating pH to be 5.0-5.5, and curing; D, after curing, slowly adding an alkali aluminum salt solution under the condition of pH being 5.0-5.5, adding a pH regulator while adding the alkali aluminum salt solution, keeping pH at 5.0-5.5, stirring for 20-40 min, and then regulating pH to be 7.0-8.0; E, curing again, filtering and washing, drying, and crushing to obtain the special titanium dioxide for decorative base paper. The production method is simple and highly practical, and can produce titanium dioxide of stable quality.

The invention relates to an environment-friendly type long-life engine coolant, which comprises the following raw materials (by weight): 40-50 parts of deionized water, 50-60 parts of polyol, 0.04-0.5part of inorganic base, 0.6-1.1 parts of monobasic fatty acid, 0.2-1.3 parts of dibasic fatty acid, 0.1-0.5 part of triazine triaminocaproic acid, 0.1-0.4 part of amino acid, 0.1-0.4 part of sulfonicsiloxane ketone, 0.1-0.2 part of a triazole compound, 0.005-0.01 part of an emulsified silicon oil antifoaming agent, and 0.005-0.01 part of a dye. The engine coolant of the invention contains no inorganic acid salts such as silicate, borate, nitrite, phosphate, etc., thus improving environmental protection property of the engine coolant. By using a special organic aluminium alloy corrosion inhibitor, aluminium alloy corrosion prevention effect of the engine coolant is enhanced, and the problem that a special aluminium alloy corrosion inhibitor silicate in a traditional engine coolant has poor heat stability is solved. The engine coolant of the invention has decay resistance, pH value can be maintained for a long time, and the problem that pH value is reduced obviously in the using process of a traditional engine coolant is solved.

The invention provides a rice seedling growth method, comprising the steps of (1) preparing a growth medium, made from, by weight, 80-90 parts of straws, 10-20 parts of straw char, 5-15 parts of animal excrement, 5-15 parts of slag, 0.04-0.05 part of a fermenting bacterium, and 0.8-72 parts of water; (2) dividing the growth medium into two parts, mixing one part with charcoal-base fertilizer, using the mixture as covering earth, and using the other part as culture earth; seeding in the culture earth, covering the surface of seeds with the covering earth, and spraying an aqueous solution of wood vinegar; (3) after the seeds grow seedlings, scattering charcoal-based fertilizer, and spraying the aqueous solution of wood vinegar. The soilless culture medium herein causes less environmental pollution due to straw incineration, the problems are effectively solved, such as difficulty in collecting seedling growth soil from saline-alkaline soil, shortage of bed soil resources and high growth cost, and a new way is provided for the development of seedling growth techniques to harmless, low-cost and low-carbon trend.

The invention relates to a non-thermal processing method of citrus fruit tea. The citrus fruit tea comprises, by weight, 20-35% of unpeeled citrus slices, 60-65% of white granulated sugar, 5-10% of honey, 0-1.2% of citric acid, 0-0.8% of malic acid and 0-0.4% of sodium citrate. The percentage sum of all components is 100%. The processing method includes the following steps that firstly, the white granulated sugar is sterilized; secondly, a glass container is disinfected; thirdly, a cover is disinfected; fourthly, fruit is cleaned and disinfected; fifthly, citrus is sliced; sixthly, filling is performed; seventhly, labels are adhered and package is performed. According to the citrus fruit tea of the non-thermal processing method of the citrus fruit tea, the nutrition storage rate of products is high, processing is convenient to perform and flavor is better.

The invention discloses a liquid alkali-free accelerator for improving cohesiveness of sprayed concrete and a preparation method thereof. The preparation method of the liquid alkali-free accelerator comprises the following steps: preparing a pre-dispersed solution A from modified attapulgite and water; preparing a mixed solution B from aluminum hydroxide, a dilute sulfuric acid solution and water;mixing aluminum sulfate, alkylol amine, water and organic acid to obtain a mixed solution C; and adding the mixed solution B into the mixed solution C, and dropwise adding the pre-dispersed solutionA into reactants of the mixed solution B and the mixed solution C at a certain rate to obtain the liquid alkali-free accelerator. The prepared alkali-free setting accelerator can effectively improve the cohesiveness of sprayed concrete, so that the rebound rate of the sprayed concrete is reduced, meanwhile, the product stability can be improved, and the sprayed concrete doped with the liquid alkali-free setting accelerator has high 1d strength and 28d compressive strength ratio of 105% or above.

The invention discloses a composite dephosphorization filter material. The composite dephosphorization filter material comprises volcanic rock with the particle size of 1-2 cm and a porous dephosphorization filter material with porosity of 45-50% and volume weight of 0.7-0.9 g / cm<3>. The porous dephosphorizing filter material comprises 71.5 wt% of fly ash, 4.5 wt% of cement, 18.9 wt% of quick limeand 5.1 wt% of gypsum. In the sewage treatment process, the dephosphorized effective component calcium ions in the filter material and phosphorus in sewage form a water-insoluble compound through chemical adsorption and precipitation reaction, and the water-insoluble compound is fixed on the filter material or is discharged and settled at the bottom of a pool along with water flow, so that the effect of removing phosphorus in sewage is achieved. Meanwhile, the filter material is porous, a large number of various microorganisms can be attached to the filter material, and various organic pollutants in sewage can be degraded.