263 results about "Sodium percarbonate" patented technology

The invention discloses a preparation method of a fly ash-Al-MOF material loaded with sodium percarbonate and acid-containing ferrous sulfate, which comprises the following steps: carrying out heat treatment on fly ash, cooling, adding into a sulfuric acid solution, stirring and mixing, carrying out solid-liquid separation, adding sodium hydroxide into a liquid product to adjust the pH value to 4.5-6 to obtain an aluminum hydroxide precipitate, washing and roasting to obtain aluminum oxide, and drying to obtain the fly ash-Al-MOF material loaded with sodium percarbonate and acid-containing ferrous sulfate. The preparation method comprises the following steps: mixing fly ash-Al-MOF with a sulfuric acid solution to obtain an aluminum sulfate solution, uniformly mixing the aluminum sulfate solution with a phthalic acid solution, carrying out solid-liquid separation, washing a solid product, carrying out freeze drying to obtain fly ash-Al-MOF, and respectively loading sodium percarbonate and acid-containing ferrous sulfate on the fly ash-Al-MOF to obtain fly ash-Al-MOF loaded with sodium percarbonate and fly ash-Al-MOF loaded with acid-containing ferrous sulfate; and uniformly mixing the two components to obtain a finished product. Compared with the existing method, the material prepared by the invention can realize long-term, stable, effective and environment-friendly remediation of the organic polluted soil, and the remediation efficiency is high.

The invention discloses a treatment process of high-nitrile-content wastewater, and belongs to the technical field of wastewater treatment. The method comprises the following steps: (1) pretreatment: adding an alkaline substance into the high-nitrile-content wastewater to adjust the pH value of the wastewater to 9-12, and adding sodium percarbonate for reaction to obtain pretreated wastewater; and (2) sequentially treating the pretreated wastewater through an A / A / O process and a biological filter EBF, and discharging after reaching the standard. According to the treatment process, the treatment cost of the high-nitrile-content wastewater can be effectively reduced, the content of nitrile compounds in the wastewater can be rapidly reduced, the biodegradability of the wastewater can be remarkably improved, and the wastewater can be discharged after reaching the standard.

Disclosed are a resin substrate-based iron oxyhydroxide desulfurizing agent and a preparation method therefor, falling within the technical field of gas purification and treatment. In the present disclosure, sodium percarbonate is used as a raw material to prepare iron oxyhydroxide. Sodium percarbonate serves both as an alkaline precipitant and as an oxidant. P-aminophenol and formaldehyde are subjected to condensation polymerization to form linear phenolic resin, which is then modified with terephthalyl alcohol to connect into a cross-linked network structure resin. The resin is used as a substrate to obtain the resin substrate-based iron oxyhydroxide desulfurizing agent. The preparation method of the present disclosure is simple and achieves a larger sulfur capacity and desulfurization efficiency, making it suitable for the removal of hydrogen sulfide from waste gas.

The invention belongs to the technical field of environmental rock soil, and particularly relates to a preparation method of zeolite-magnetic iron oxide and application of the zeolite-magnetic iron oxide in catalyzing sodium percarbonate to repair petroleum hydrocarbon polluted soil. The specific method comprises the following steps: carrying out alkali treatment on zeolite, and then carrying out heat treatment to obtain alkali-heat combined modified zeolite; extracting an iron element in the iron-containing by-product with acid and preparing ferric hydroxide colloid; and uniformly mixing the alkali-heat combined modified zeolite with the ferric hydroxide colloid, carrying out solid-liquid separation, and then carrying out heat treatment and hydrogen reduction treatment to obtain the zeolite-magnetic iron oxide, the application specifically comprises the following steps: uniformly mixing sodium percarbonate, tween-80, silica sol and water to prepare a turbid solution A; uniformly mixing zeolite-magnetic iron oxide, organic acid, silica sol and water to prepare a turbid solution B; and uniformly mixing the turbid liquid B with the petroleum hydrocarbon polluted soil, then adding the turbid liquid A, uniformly mixing, and maintaining for 12-15 days to finish the remediation.

The invention discloses a copper-titanium etching solution and a preparation method thereof, and belongs to the technical field of etching solution preparation. The etching solution is prepared from the following components in percentage by mass: 4.5-7.5% of potassium peroxymonosulfate composite salt, 1.2-2.8% of sodium percarbonate, 1.2-2.8% of benzotriazole-2, 3, 4-triazole-2, 3, 4-triazole-2, 3, 4-triazole-2, 3, 4-triazole-2, 3- The cleaning agent is prepared from the following components in percentage by weight: 1.2%-1.8% of 1, 3-dicarboxylic acid, 0.3%-0.8% of 5-aminotetrazole, 0.15%-0.45% of ethylenediamine tetraacetic acid tetrasodium salt, 0.15%-0.45% of hydroxyethylidene diphosphonic acid, 0.15%-0.45% of cocamidopropyl betaine, 0.3%-0.8% of benzotriazole, 0.15%-0.45% of 2-mercaptobenzothiazole, 0.02%-0.08% of poly-N-isopropylacrylamide, 0.7%-1.8% of potassium perchlorate and the balance of ultrapure water. According to the etching solution, the copper-titanium etching rate can be accurately regulated and controlled, back cutting and titanium residues are effectively inhibited, the stability of the etching solution is improved, and the service life of the etching solution is prolonged.

The invention discloses a preparation method of a soil remediation agent based on zinc slag-Zn-MOF.The preparation method comprises the steps that firstly, solid waste zinc slag is adopted for preparing zinc slag Zn-MOF, then the zinc slag Zn-MOF serves as a carrier, sodium percarbonate and acid-containing ferrous sulfate are loaded on the zinc slag Zn-MOF, finally, the zinc slag Zn-MOF loaded with the sodium percarbonate and the zinc slag Zn-MOF loaded with the acid-containing ferrous sulfate are mixed according to the mass ratio of 1: (1-7), and the soil remediation agent is obtained. The soil remediation agent is obtained. Compared with the soil remediation agent in the prior art, the solid waste zinc slag is adopted as the main preparation raw material of the carrier material, resource utilization of the solid waste is achieved, waste can be turned into wealth, the waste treatment cost can be reduced, and the environmental pressure can be relieved; the prepared soil remediation agent has the efficient adsorption capacity of MOF and the strong oxidation performance of sodium percarbonate, and has a good remediation effect on organic contaminated soil.

The utility model provides a sodium percarbonate oxidation reinforced low-pressure membrane method shale gas wastewater treatment system, and relates to the technical field of wastewater treatment. The sodium percarbonate oxidation reinforced low-pressure membrane method shale gas wastewater treatment system comprises a contact oxidation reaction tank, a low-pressure membrane unit and a water production unit, wherein the contact oxidation reaction tank is provided with a sodium percarbonate oxidizing agent adding pipeline and supply equipment for providing an activating agent for activating a sodium percarbonate oxidizing agent; the low-pressure membrane unit comprises a low-pressure membrane reaction tank and a membrane assembly arranged in the low-pressure membrane reaction tank, a water outlet of the contact oxidation reaction tank is communicated with a water inlet of the low-pressure membrane reaction tank, and the low-pressure membrane reaction tank is connected with a water outlet pipeline; the produced water unit comprises a produced water overflow pool and a produced water collecting pool, a water inlet of the produced water overflow pool is communicated with the water outlet pipeline, and a water outlet of the produced water overflow pool is communicated with the produced water collecting pool. The system can reduce membrane pollution in the process of purifying the shale gas wastewater by the low-pressure membrane and improve the wastewater treatment effect.

The invention discloses a method for improving lithium recovery rate, which comprises the following steps: S1, removing impurities from a lithium source solution, and carrying out solid-liquid separation to obtain waste residue and lithium-containing filtrate; s2, concentrating the lithium-containing filtrate to obtain lithium precipitation mother liquor; s3, treating the lithium precipitation mother liquor by using saturated sodium carbonate, and carrying out solid-liquid separation to obtain a crude lithium carbonate product and primary residual liquid; s4, carrying out carbonization pyrolysis treatment on the primary residual liquid, and carrying out solid-liquid separation to obtain battery-grade lithium carbonate and secondary residual liquid; s5, carrying out phosphoric acid lithium precipitation treatment on the secondary residual liquid, and carrying out solid-liquid separation to obtain solid lithium phosphate; according to the present invention, the sodium carbonate lithium precipitation, the carbonization pyrolysis and the phosphoric acid lithium precipitation are combined to form the three-stage precipitation process, such that the gradient recovery of the lithium is achieved, the comprehensive recovery rate of the lithium is improved, the staged precipitation avoids the inhibition of the impurities (Ca < 2 + > and SO4 < 2->) on the subsequent reaction, and the circulation energy consumption and the lithium loss are reduced.

The invention relates to the technical field of comprehensive utilization of titanium gypsum resources, in particular to a method for green and efficient resource utilization of titanium gypsum. The method comprises the following steps: pretreating titanium gypsum, modifying with sodium carbonate to obtain modified slag and a Na2SO4 solution, carrying out acid leaching treatment on the modified slag with hydrochloric acid, carrying out pH adjustment, chemical precipitation, aging and solid-liquid separation on the acid leaching solution to obtain an iron-enriched precipitate and a calcium-containing filtrate, and roasting the iron-enriched precipitate to obtain high-grade Fe2O3. And performing liquid-liquid reaction on the Na2SO4 solution and the calcium-containing filtrate to synthesize CaSO4 and NaCl. According to the method, iron in the titanium gypsum can be effectively removed and recycled, so that the conversion rate of calcium sulfate in the titanium gypsum reaches 96.21%, iron and calcium enter a liquid phase after the modified slag is subjected to acidolysis, the iron removal rate reaches 97.57%, the Ca leaching rate reaches 99.70%, an iron enrichment with the Fe2O3 grade being 82.50% is obtained after the acid leaching solution is subjected to chemical precipitation and roasting, and CaSO4 and NaCl are synthesized by the Na2SO4 solution and the calcium-containing filtrate. The method not only realizes high iron removal rate, but also realizes comprehensive utilization of calcium and iron, is low in input cost and simple in process, not only solves the problem of stockpiling of titanium gypsum, but also realizes recycling of resources, and has relatively high popularization value.

The invention discloses a nitrogen-doped carbon nanotube modified magnetic pyrite composite catalyst as well as a preparation method and application thereof, and belongs to the technical field of water treatment. The nitrogen-doped carbon nanotube modified magnetic pyrite composite catalyst is prepared from the following raw materials: multi-walled carbon nanotubes, a concentrated nitric acid solution, melamine, magnetic pyrite powder and sodium percarbonate. According to the preparation method, magnetic pyrite and nitrogen-doped carbon nanotubes are mixed according to the ratio of 15: 1, nitrogen heat treatment is performed for 3 h at the temperature of 600 DEG C to form a composite carrier, and then activation treatment is performed through sodium percarbonate to obtain the catalyst. According to the catalyst, the electron transfer capacity and adsorption performance are enhanced through the nitrogen-doped carbon nanotubes, Fe < 2 + > / Fe < 3 + > circulation of the magnetic pyrite is cooperated, and the dual effects that sodium percarbonate is efficiently activated to generate free radicals to degrade pollutants and rapid recovery is achieved through magnetism can be achieved. The catalyst prepared by the invention is suitable for deep treatment of organic matters and heavy metals in industrial wastewater, and has the advantages of wide pH adaptation range, no secondary pollution and recyclability.

The invention discloses a micro-fine particle gold ore normal-pressure alkaline leaching pretreatment method based on sodium percarbonate reinforcement, and belongs to the field of precious metal metallurgy. The method comprises the following steps: adding an oxidizing agent sodium percarbonate in batches under the condition that air is filled into ore pulp, starting to monitor the oxidation potential and the pH value of a reaction system after adding, judging that the reaction reaches the end point when the sudden drop amplitude of the oxidation potential of the ore pulp within one hour is greater than or equal to 30mV and the pH value is increased by 0.3-0.5 unit, and stopping aeration to finish pretreatment; in the segmented oxidation process, the oxidation potential is controlled within the range of + 520 mV to + 550 mV by dynamically adjusting the air charging rate. According to the basic technical scheme, the gold leaching rate reaches 86.01%, the gold leaching rate reaches up to 88.92% through the optimized technical scheme, and the utilization rate of gold ore resources is remarkably increased.

The invention provides a gas extraction drilling hole sealing material with CO reaching the standard and a preparation method thereof, and relates to the field of coal mining. The concrete comprises the following raw materials in parts by weight: 90-100 parts of cement, 3-10 parts of an accelerator, 5-15 parts of anhydrous sodium sulphate, 1-2.5 parts of a water reducing agent, 1-4 parts of methyl cellulose, 1.5-6 parts of sodium percarbonate, 3-5 parts of modified montmorillonite, 1-3 parts of porous alumina particles and 1-3 parts of polyvinyl alcohol. The preparation method comprises the following steps: uniformly mixing sodium percarbonate and porous alumina to obtain a first mixture; mixing polyvinyl alcohol and water, heating and stirring, adding the modified montmorillonite, stirring for 1-2 hours, standing for 20-24 hours, drying and grinding to obtain a second mixture; and uniformly mixing the first mixture, the second mixture and other raw materials. The hole sealing material does not generate CO, and has the advantages of being high in fluidity, large in expansion rate, uniform in distribution, high in compressive strength and good in compactness.

The invention belongs to the field of preservatives, and particularly relates to a starch-based sodium percarbonate green oxygen release agent as well as a preparation method and application thereof. According to the technical scheme, the sodium percarbonate-starch composite crystal comprises a V-shaped crystal structure cavity formed by hydrophilic modified starch and fatty acid, and the V-shaped crystal structure cavity and sodium percarbonate form a stable composite crystal structure. The invention provides a novel green composite fresh-keeping oxygen slow-release agent, namely a sodium percarbonate-starch composite crystal, which can be used in multiple fields of food processing, medical treatment, environmental protection and the like, and is particularly suitable for application environments needing continuous and controllable high-concentration oxygen release.

The invention provides a washing machine tank cleaning agent and a preparation method and application thereof. The washing machine tank cleaning agent comprises the following components in percentage by mass: 30-50% of peroxide, 3-10% of inorganic alkali, 15-20% of buffer alkali, 1-5% of lauryl sodium sulfate, 1-5% of protease and the balance of anhydrous sodium sulphate. Wherein the inorganic base is potassium hydroxide and / or sodium hydroxide, the buffer base is sodium carbonate and / or sodium bicarbonate, and the peroxide is sodium percarbonate and / or sodium perborate. According to the washing machine groove cleaning agent, in a specific peroxide system, the specific inorganic base and the specific buffer base are adopted, the synergistic interaction effect is achieved in the aspects of dirt removal, hair dissolution, bacteriostasis and the like, and compared with washing machine groove cleaning agents adopting other inorganic bases or other buffer bases, the washing machine groove cleaning agent has the advantages that the cleaning effect is good; according to the present invention, the effects of dirt removal, hair dissolution and bacteria inhibition are significantly excellent.

The present invention discloses a preparation method for synthesizing α-amino ketone compounds from fatty aldehydes and secondary amines, belonging to the technical field of organic chemical synthesis. The fatty aldehyde, secondary amine, and sodium percarbonate are added to a reaction vessel for mixing, and the reaction is carried out at a temperature of 95 to 115 °C for 16 to 24 hours. After purifying the reaction mixture, α-amino ketone compounds are obtained. The fatty aldehydes and secondary amines used in the method of the present invention are commercially available raw materials or are prepared from commercially available primary alcohols and primary amines through simple oxidation or reduction; the substrate has a wide range of applicability and is applicable to the above-mentioned various fatty aldehydes and secondary amines. The method of the present invention can be prepared only by oxidizing and rearranging with cheap and easily available sodium percarbonate, without the need for additional catalysts and additives, and has the characteristics of high economy, wide commercial sources, and environmental friendliness; the method of the present invention has few reaction steps and has the characteristic of simple operation.

The invention discloses a slow-release soil remediation agent and application thereof in oil-containing soil remediation, and belongs to the field of soil remediation. The slow-release soil remediation agent comprises a composite oxidant, a hyperbranched nano active material, cement, bentonite and water, the composite oxidizing agent comprises ferrous sulfate, sodium percarbonate and a Fe-based covalent framework material; the hyperbranched nano active material is a hyperbranched nano silicon dioxide material. The applicable pH range of the slow-release soil remediation agent is relatively wide; after the hyperbranched nano active material is added, the soil remediation effect is enhanced; due to the absence of strong oxidants such as Fenton and persulfate, subsequent pollution is avoided; and the cost is low. The soil remediation agent is prepared into a slow release system, the remediation depth during in-situ remediation can be increased, and meanwhile the problems of reverse diffusion, concentration trailing, pollutant rebound and the like are solved.

The invention belongs to the field of washing products, and particularly relates to a composition for removing pesticide residues, a preparation method of the composition and application of the composition in preparation of pure white capsules. The composition is prepared from the following raw materials: shell powder, table salt, citric acid, sodium carbonate, sodium percarbonate, flos chrysanthemi, radix arnebiae seu lithospermi, flos lonicerae, fructus gleditsiae, bamboo leaves, tea seeds, radix bupleuri, herba menthae, cocamidopropyl betaine, sucrose ester and lauryl sodium sulfate. The cleaning composition for removing pesticide residues in traditional Chinese medicines is obtained by selecting specific raw materials and proportions, and the composition greatly improves the pesticide removal rate of the raw materials in the pure white capsule.

The invention relates to the technical field of mulberry silk dyeing, and discloses a mulberry silk dyeing method which comprises the following steps: S1, pretreatment: immersing a mulberry silk raw material into an aqueous solution containing 0.5-1.5% of sodium carbonate, stirring for 20-40 minutes at the speed of 50-100 revolutions per minute at the temperature of 40-60 DEG C, taking out, and rinsing with deionized water until the mulberry silk raw material is neutral; the pretreated mulberry silk is put into a dyeing bath, the dyeing bath comprises 2-5% of reactive dye and 1-3 g / L of leveling agent, the bath ratio is controlled to be 1: 10-1: 20, the temperature is increased to 60-80 DEG C at the speed of 1-2 DEG C / min, and heat preservation dyeing is conducted for 30-60 min. In the pretreatment step, sodium carbonate concentration, temperature and stirring rate are controlled, so that the problem of poor dyeing uniformity caused by residual impurities on the fiber surface and non-uniform dyeing temperature control in the existing mulberry silk dyeing is solved.

The invention provides a wall yellowing agent and a production method thereof, and relates to the field of wall yellowing agents. The yellowing eliminating agent composition is prepared from the following raw materials: an alkaline neutralizer, a redox agent, a penetrant, a dispersing agent, a water-based solution, tea tree essential oil, organosiloxane, an ethylene glycol compound and sodium percarbonate microcapsules. The sodium percarbonate microcapsules are added in the raw material preparation process, so that the starting time of oxidation reaction can be delayed to 15 minutes, excessive oxidation caused by high-temperature accelerated reaction is avoided, the use efficiency in a high-temperature environment can be effectively improved, and the use is prevented from being influenced; the method has the beneficial effects that preparation and use of raw materials in different environments can be realized, corresponding different yellowing-eliminating agents are selected according to different conditions, the use effect of the yellowing-eliminating agent can be fully exerted, the use defects of a traditional yellowing-eliminating agent are reduced, and the limitation problem is reduced.

The invention relates to the technical field of cleaning tablets, and provides a multi-effect cleaning tablet for a kitchen waste processor and a preparation method of the multi-effect cleaning tablet. The multi-effect cleaning tablet comprises a foaming cleaning layer, an oxidation sterilization layer and a deep decomposition layer, the foaming cleaning layer is arranged on one side of the oxidation sterilization layer, the deep decomposition layer is arranged on the opposite side of the oxidation sterilization layer, and the foaming cleaning layer comprises sodium bicarbonate, gluconic acid-delta-lactone, alkyl glycoside, limonene and a chelating agent; the oxidation sterilization layer comprises sodium percarbonate, potassium hydrogen peroxysulfate, potassium carbonate, sodium citrate and a stabilizer; the deep decomposition layer comprises biological enzyme. Gluconic acid-delta-lactone is adopted in the foaming cleaning layer of the multi-effect cleaning tablet to generate gluconic acid, so that the system is prevented from instantly and violently turning over, a middle-layer peroxidation system is favorably released at a proper time, invalid decomposition is reduced, strong acid or violent pH fluctuation is prevented from permeating into an inner layer, the enzyme inactivation risk is reduced, the foaming process is mild, and the foaming effect is good. And the integral integrity of the tablet can be maintained.

The invention discloses a method for low-temperature catalytic cracking of organic waste sulfuric acid. The method comprises the following steps: S1, slowly adding sodium percarbonate into a reactor filled with the organic waste sulfuric acid and excessive activated carbon in batches; s2, heating the reactor through a water bath, and reacting until no bubble is generated; and S3, after the reaction is finished, filtering the reaction liquid to obtain the high-purity concentrated sulfuric acid. The organic waste sulfuric acid is subjected to harmless and resourceful treatment by utilizing the adsorption capacity and catalytic capacity of the activated carbon and the strong oxidizing property and environmental friendliness of the sodium percarbonate. Specifically, activated carbon is used as a catalyst, sodium percarbonate is used as an oxidizing agent, and the sodium percarbonate is used for oxidizing organic matters in organic waste sulfuric acid to recover high-purity concentrated sulfuric acid. The method is simple in process, can be carried out at low temperature, is low in energy consumption and high in removal rate, and has a relatively strong industrial prospect.

The present application belongs to the technical field of cleaning supplies, and particularly relates to a high-efficiency blood-stain removing powder and a preparation method thereof. The high-efficiency blood-stain removing powder provided by the present application comprises the following raw materials and mass fractions: 45.0-65.0 parts of sodium percarbonate, 12.0-18.0 parts of an auxiliary agent, 11.0-18.0 parts of an auxiliary cleaning agent, 4.0-7.0 parts of anhydrous sodium metasilicate, 1.0-3.0 parts of a non-ionic surfactant, 1.5-2.5 parts of an enzyme preparation, 0.2-1.0 parts of an antibacterial agent, 1.0-3.0 parts of a thickening agent, and 0.1-0.5 parts of a fragrance; the auxiliary cleaning agent is composed of sodium carbonate and sodium alpha-alkenyl sulfonate at a mass ratio of 8.0-12.0:3.0-6.0. When the high-efficiency blood-stain removing powder of the present application is used, no complex operation is needed, and blood stains can be easily removed through simple soaking, without laborious scrubbing, so that the effect of 'quick cleaning and complete stain removal' is truly achieved.

The present application relates to a kind of preparation method and application of nanoscale enzyme composite preparation effervescent tablet for the rapid degradation of organic pollutants, the present application is prepared by water solution method, doping different proportions of Fe preparation MnO2 Nanoscale enzyme.After again, MnO2@Fe nanoscale enzyme and sodium percarbonate powder, MnO2@Fe nanoscale enzyme and sodium percarbonate are mixed and pressed into effervescent tablet, for quickly removing organic pollutants in water body.The nanoscale enzyme effervescent tablet obtained in the present application can quickly degrade low concentration organic pollution wastewater, improve the pH of acidic wastewater;Through sodium percarbonate reaction, dense micro-bubbles can be generated, which can mix catalyst and pollutants uniformly without using rotor to achieve the effect of rapid oxidation and degradation, and it is green and efficient, solves the problems such as cumbersome dosing, difficult reagent storage and other problems in engineering examples, and does not cause secondary pollution to water body when put into water body, greatly improves the efficiency of less amount of putting in engineering, and has wide application prospect.

The present invention relates to disposable or wearable absorbent articles such as; but not limited to, baby diapers, pants, pull up diapers, adult incontinence articles, which provide skin irritation / rash control and antibacterial properties by an absorbent core free of bleach activator with homogeneous distributed sodium percarbonate.

The invention relates to the technical field of daily chemical industry, in particular to a washing machine tank cleaning effervescent tablet and a preparation method thereof. The washing machine tank cleaning effervescent tablet is prepared from the following raw materials in parts by weight: 40 to 60 parts of sodium percarbonate, 4 to 6 parts of tetraacetylethylenediamine, 1 to 3 parts of tetraacetyl glycoluril, 3 to 5 parts of microencapsulated sodium silicate, 12 to 18 parts of microencapsulated citric acid, 0.5 to 1.5 parts of benzotriazole, 0.5 to 1.5 parts of hydroxybenzotriazole, 1 to 2 parts of composite antibacterial agent, 3 to 5 parts of polyvinylpolypyrrolidone and 1 to 2 parts of magnesium stearate. And 0.3 to 0.7 part of essence. The washing machine tank cleaning effervescent tablet is prepared through gradient temperature control mixing and layered tabletting technologies, and has the effects of efficient cleaning, rapid disintegration, efficient antibiosis, small dosage and effective prevention of corrosion of metal parts in a low-temperature environment.

The application belongs to the technical field of disinfection, and discloses a composite disinfectant and a preparation method thereof. The disinfectant is composed of potassium hydrogen persulfate, urea peroxide, sodium percarbonate, sodium hexametaphosphate, sodium citrate, ethylenediaminetetraacetic acid disodium, sulfamic acid, sodium dodecyl benzene sulfonate, fatty alcohol polyoxyethylene ether, cocamidopropyl betaine, nano manganese dioxide, nano silicon dioxide, nano zinc oxide, sodium carboxymethyl cellulose, polyethylene glycol 6000, amaranth red, sodium chloride and a residual amount of anhydrous sodium sulfate, and is prepared through a feeding, mixing and granulating process. The application is suitable for disinfection in multiple scenes, has high safety and a simple preparation process, and is suitable for large-scale industrial production.

The invention belongs to the field of contact lens care, and particularly relates to a sandwich effervescent tablet for cleaning contact lenses and a preparation method of the sandwich effervescent tablet. The outer layer is prepared from the following raw materials: citric acid, sodium bicarbonate, disodium ethylene diamine tetraacetate, a surfactant, polyvinylpyrrolidone, microcrystalline cellulose and colloidal silicon dioxide; the middle layer is prepared from the following raw materials in parts by weight: sodium percarbonate, tetraacetylethylenediamine, phosphate buffer salt, a surfactant, anhydrous sodium carbonate, microcrystalline cellulose and colloidal silicon dioxide; the inner core is prepared from the following raw materials in parts by weight: catalase, a stabilizer, hydroxy propyl cellulose K4M, ethyl cellulose, microcrystalline cellulose and sodium bicarbonate. According to the invention, citric acid / bicarbonate is matched with an active agent to weaken a biological membrane in the outer layer, and a permeation channel is opened preferentially; the H2O2 platform is formed by matching middle-layer sodium percarbonate; and the inner core adopts HPMC / EC controlled-release catalase to realize hysteresis-burst release neutralization.

The invention relates to the field of filling, in particular to a lightweight filling material as well as a preparation method and a use method thereof. The light filling material is prepared from a composition A and a composition B according to the mass ratio of 1: 1, and the composition A is prepared from, by mass, 60-75 parts of water, 70-75 parts of Portland cement clinker, 15-22 parts of fly ash and 8-10 parts of sodium percarbonate; the composition B comprises the following components in parts by mass: 60-75 parts of water, 25-30 parts of lime, 47-50 parts of gypsum, 8-18 parts of stone powder and 10-12 parts of a foam stabilizer. After the light filling material is filled to a position needing to be filled, the light filling material can be cured and formed to obtain a filling body, the density of the filling body is 300-900 kg / m, and the compressive strength of the filling body is 0.23-25 MPa.

The application discloses a kind of comprehensive water quality promotion algae inhibitor and its preparation method and application, belong to water quality management field.The comprehensive water quality promotion algae inhibitor is according to mass percentage component: lanthanum iron modified bentonite 15-35%, modified sodium percarbonate 30-45%, polyaluminum chloride 8-15%, binder 20-30%;The mass ratio of lanthanum iron modified bentonite and modified sodium percarbonate is 1-3:1;The binder is composed of natural porous mineral and cement.The comprehensive water quality promotion algae inhibitor disclosed in the application can inhibit algae, eliminate algal toxins, oxidize ammonia nitrogen, increase oxygen and activate water environment ecology on the one hand, and the modified lanthanum component can more stably remove phosphorus on the other hand, and can reduce the pH increase caused by the use of sodium percarbonate, and can promote water quality under the coupling of other adsorption materials, adsorb pollutants, and fundamentally solve the problem of water eutrophication.

The application discloses a method for lime-free and acid-free copper-sulfur flotation separation, wherein a combined inhibitor for copper-sulfur separation comprises ferrous sulfate and amygdalin, and is used as a pyrite inhibitor in flotation separation of chalcopyrite and pyrite.The combined inhibitor ferrous sulfate and amygdalin, a collector and a foaming agent are added to a raw ore after crushing and grinding to perform a copper flotation operation, and after the copper flotation operation, a combined activator sodium percarbonate and copper sulfate, a combined collector and a foaming agent are added to the ore pulp to perform a sulfur flotation operation.The combined inhibitor ferrous sulfate and amygdalin has a strong inhibiting effect on pyrite, and can effectively realize flotation of chalcopyrite; the combined activator sodium percarbonate and copper sulfate has a good de-inhibiting and activating effect on pyrite, and can effectively realize flotation of pyrite, thereby reducing the mineral processing cost while enhancing the copper-sulfur separation effect, and having a good application prospect.