73 results about "Calcium sulfite" patented technology

The invention discloses a method for selectively and efficiently removing impurities in desulfurized gypsum and preparing high-quality alpha-semi-hydrated gypsum, which comprises the following steps: (1) removing organic impurities in the desulfurized gypsum by utilizing flotation, then removing soluble impurities by washing, and aerating air to oxidize calcium sulfite into calcium sulfate dihydrate while washing, then carrying out acid leaching in a hydrochloric acid solution to remove insoluble impurities, taking out and drying to obtain treated desulfurized gypsum; and (2) adding the desulfurized gypsum treated in the step (1) into a carboxylic acid aqueous solution to carry out solution crystallization reaction, adding potassium carboxylate into the carboxylic acid aqueous solution to regulate and control the crystallization rate and crystal morphology, carrying out solid-liquid separation after the reaction is finished, and washing, drying and ball-milling the solid to obtain the high-quality alpha-semi-hydrated gypsum powder. The alpha-semi-hydrated gypsum product obtained by the invention is high in purity, and the hydrated body has high absolute dry compressive and flexural strength.

The invention discloses a novel wet flue gas desulfurization composite synergistic additive and a preparation method thereof, and relates to the technical field of flue gas desulfurization. The novel wet flue gas desulfurization composite synergistic additive comprises the following raw materials in parts by weight: 15-25 parts of organic acid, 10-20 parts of organic salt, 5-10 parts of inorganic salt, 4-5 parts of a wetting agent, 5-8 parts of a moisture absorbent and 5-15 parts of an accelerant. The prepared novel wet flue gas desulfurization composite synergistic additive has good calcium carbonate dissolution rate and calcium sulfite oxidation rate, and the desulfurization efficiency is high.

The invention discloses a green roasting method for recycling desulfurized gypsum, and belongs to the technical field of solid waste recycling. According to the process disclosed by the invention, the desulfurized gypsum solid waste rich in calcium sulfate is used for replacing part or all of sulfate to be mixed with lepidolite for roasting reaction, and components such as calcium carbonate and calcium sulfite contained in the desulfurized gypsum are utilized by controlling the step-by-step heating rate and the roasting temperature; under specific roasting process conditions, calcium oxide and calcium sulfide generated through self-reaction serve as purifying agents and react with fluorine and thallium to form stable calcium fluoride and thallium sulfide precipitates, fluorine and thallium are fixed in the high-temperature roasting stage, the pressure of follow-up flue gas treatment and wastewater treatment is effectively reduced through self-purification, and environmental pollution is reduced.

This invention relates to the field of exhaust gas treatment technology, and more particularly to an exhaust gas treatment device for steel tailings treatment. The device includes a base plate, a workbench on top of the base plate, a support on top of the workbench, and a mounting shell on the left side of the top of the support. A first pipe is mounted on the mounting shell, and a second pipe is connected to the right side of the first pipe. The dust removal component of this device uses a servo motor-driven rack and pinion transmission to achieve dynamic switching of multiple filter plates. This allows for the replacement of clogged filter plates without stopping the machine, ensuring continuous dust removal operations. Simultaneously, the double-layer filtration structure improves the interception effect of large particulate impurities. The jet stirring component, in conjunction with the drive component, enables the three treatment chambers to rotate and stir synchronously, ensuring full contact between the exhaust gas and the calcium hydroxide solution. This significantly increases the acid-base neutralization reaction rate, reduces the residue of pollutants such as calcium sulfite and lead hydroxide, and improves the exhaust gas purification effect.

The application discloses a magnesium metal reduction slag and limestone wet combined desulfurization process and belongs to the technical field of limestone desulfurization. The preparation method of the magnesium metal reduction slag and low-grade limestone wet combined desulfurization process comprises the following steps: S1, uniformly mixing the magnesium metal reduction slag with water to carry out hydration reaction, preparing a hydrated magnesium slag slurry, uniformly mixing the prepared hydrated magnesium slag slurry with prepared low-grade limestone slurry, and obtaining SO2 absorption liquid; S2, using the SO2 absorption liquid to carry out a desulfurization reaction on flue gas in an absorption tower, generating calcium sulfite, and blowing air into the absorption tower to make the generated calcium sulfite tend to be completely oxidized to obtain calcium sulfate; and S3, slowly cooling the slurry in the absorption tower with cooling water in the desulfurization reaction process, and making the obtained calcium sulfate form gypsum crystals. The desulfurization process has high desulfurization efficiency, little gypsum scale is generated in the desulfurization process, the magnesium metal reduction slag is effectively utilized, and the environment is prevented from being polluted.

The present application relates to a kind of oxidation separation and reuse process of wet flue gas desulfurization circulating slurry, for processing calcium-based wet flue gas desulfurization system of fluorine chloride containing flue gas.The process is from the high load circulating slurry containing calcium sulfite, calcium sulfate, chloride and fluoride of first-stage washing circulating tank side line extraction, is carried out under the condition of limiting pH and oxidation-reduction potential oxidation conditioning, then the bottom stream containing calcium sulfate as seed slurry returns crystal conditioning unit, promote calcium sulfate particle growth;Subsequently, concentrated separation and filter separation are obtained filter cake, low turbidity filtrate and high turbidity reflux liquid, and high turbidity reflux liquid returns oxidation conditioning unit or crystal conditioning unit.Low turbidity filtrate is according to turbidity, conductivity, chloride concentration and fluoride concentration, and the efficiency of filtrate reuse is improved.

The invention belongs to the technical field of high-value utilization of non-ferrous metal solid waste, and relates to a method for preparing high-purity vanadyl sulfate through calcification roasting countercurrent leaching extraction.The method comprises the steps that converter vanadium slag serves as a raw material, a calcification agent is added for roasting, and transformed vanadium slag is obtained; secondary countercurrent is conducted on the transformed vanadium slag, calcium sulfite is added in the leaching process, and reduced vanadium-containing acid leaching liquid is obtained; the leaching residues can be used for preparing ferrotitanium alloy products; vanadium and impurities are separated through the extraction circulation process of extraction, washing and reverse extraction, and the high-purity vanadyl sulfate electrolyte is prepared. According to the method, the converter vanadium slag is adopted as a raw material, and high-value utilization of the converter vanadium slag in the field of energy storage is achieved. And meanwhile, resource utilization of leaching residues obtained through secondary countercurrent leaching is achieved, and whole-process harmless treatment is achieved.

The present invention provides an air circulation purification device, which relates to the technical field of air circulation purification. The air circulation purification device includes a wall, a circulation mechanism is provided in the middle of one side of the front end of the wall, a processing mechanism is provided in the middle of the front end of the wall, and a purification mechanism is provided in the middle of the other side of the front end of the wall; the purification mechanism includes an installation box, and automatic injector 2 and automatic injector 1 are provided on both sides of the upper and middle part of the front end of the installation box. The air in the cargo shower room and the air shower room is circulated and purified by a circulation purification method, and during the purification process, dust and impurities in the air are first filtered out by a water curtain dust filter, and then harmful substances in the air exhaust are neutralized by a chemical reaction, thereby generating calcium sulfite that can purify water, thereby reducing the pollution level of the air emissions in the cargo shower room and the air shower room to the surrounding environment.

The invention discloses a method for degrading short-chain chlorinated paraffin in soil based on a calcium sulfite-ferric sulfate double slow-release system, and relates to the technical field of soil and groundwater pollution remediation. The invention aims to solve the problems of high energy consumption, high cost and low efficiency and degradation rate when the short-chain chlorinated paraffin in the soil is degraded by the existing method. The method comprises the following steps: drying ferric sulfate-sodium alginate hydrogel until no water exists on the surface to obtain a ferric sulfate-sodium alginate slow-release agent; the method comprises the following steps: adding soil containing short-chain chlorinated paraffin into a container, then adding a ferric sulfate-sodium alginate slow-release agent, pure water and calcium sulfite, placing the container on a shaking table, sealing the container, and reacting for 1-14 days at the temperature of 10-30 DEG C; the method for degrading the short-chain chlorinated paraffin in the soil based on the calcium sulfite-ferric sulfate double slow-release system can be obtained.

The invention provides a method for removing total DNA (Deoxyribose Nucleic Acid) in wastewater with halide ion tolerance, which is used for removing DNA in wastewater containing halide ions based on a potassium ferrate and calcium sulfite coupling system, and belongs to the technical field of sewage purification treatment. The method provided by the invention utilizes Fe (IV) / Fe (V) / Fe (VI) and flocculent precipitate which are not interfered by halide ions in the reaction of potassium ferrate and slightly soluble calcium sulfite to realize efficient removal of DNA in wastewater. According to the method, the oxidation stability under halide ion interference is remarkably improved, better environmental adaptability and more stable removal efficiency are shown, and a new technical scheme is provided for treatment of actual wastewater containing resistance genes.

The present application relates to the field of metallurgical environmental protection technology, and particularly relates to a flue gas desulfurization system and process based on calcium-based desulfurizer. The present application is based on the existing sodium-based desulfurization system for lightweight modification, without the need for new desulfurization production line, greatly reducing the equipment capital investment and transformation cost; at the same time, low-cost calcium-based desulfurizer is used to replace high-priced sodium-based desulfurizer, canceling the special grinding equipment with high operation and maintenance cost, combining with real-time working condition to adaptively adjust the desulfurizer injection amount, which can reduce the invalid consumption of desulfurizer, and comprehensively reduce the enterprise desulfurization operation cost; the present application realizes efficient resource utilization of desulfurization by-products, the calcium sulfite and calcium sulfate by-products generated by desulfurization reaction have high purity and low water content after screening and air separation purification, without toxic and harmful impurities, which can be directly used as building material production raw materials, completely eliminating the land occupation and secondary pollution problems caused by the accumulation and landfill of traditional sodium-based desulfurization by-products, with outstanding environmental protection benefits and social value.

The invention discloses a method for leaching zinc, indium, gallium and germanium from neutralized gypsum residues, and belongs to the technical field of metallurgy and chemical engineering. Comprising the following steps that neutralized gypsum residues and sulfuric acid are mixed and subjected to size mixing, the mixture is added into a reaction kettle, sulfur dioxide is introduced for reduction leaching, and reduction leaching residues and leaching liquid containing zinc, indium, gallium and germanium are obtained. Then the reduction leaching residues and a sulfuric acid solution are mixed and subjected to size mixing, the mixture is added into a reaction kettle, oxygen is introduced for oxidation crystallization, a stirring reaction is conducted, and an oxidation crystallization product and crystallization filtrate are obtained; and carrying out multi-stage countercurrent washing on the oxidized and crystallized product to obtain the byproduct gypsum. According to the method, valuable components such as zinc, indium, gallium and germanium in the neutralized gypsum residues are deeply leached in a reduction leaching and oxidation crystallization mode, meanwhile, residual calcium sulfite in the leaching residues is oxidized and crystallized into dihydrate gypsum, leaching of valuable metal is achieved, the quality of the byproduct gypsum is improved, and the method has the advantages of being short in technological process, high in multi-metal leaching rate, low in cost and the like. The grade of gypsum is high.

The invention provides a method and system for measuring sulfite in desulfurization slurry based on multi-parameter integrated measurement, and the method comprises the steps: carrying out the analysis and research of the anti-corrosion and anti-interference performance and measurement precision of electrodes in an extreme environment of desulfurization slurry, and carrying out the type selection of various electrodes; a plurality of online measurable time sequence parameters are measured, corresponding sulfite concentration test values are synchronously obtained, and a multi-parameter associated data set is generated; based on the multi-parameter association data set, modeling and hyper-parameter tuning are carried out on a nonlinear sequential relationship among multiple variables, and a sulfite concentration prediction model is constructed; and optimizing the anti-interference performance of the prediction model through cross-unit transfer learning, dynamic disturbance test and sensitivity analysis, and outputting the sulfite concentration in the desulfurization slurry to be measured through the optimized prediction model. According to the method, sulfite and original monitoring parameters are subjected to multi-parameter integrated measurement, and the concentration of calcium sulfite in the slurry can be stably and accurately measured in real time.

The present application relates to the field of metallurgical solid waste resource utilization and industrial flue gas purification, and specifically discloses a process method for flue gas desulfurization by steel slag method, which comprises the following steps: using steel plant solid waste steel slag as a calcium source to prepare organic calcium salt or inorganic calcium salt as a circulating desulfurizer, sequentially preparing a desulfurization liquid, wet flue gas desulfurization, calcium sulfite oxidation separation, desulfurizer regeneration, and steel slag tailing resource utilization, to form a desulfurizer closed loop circulation system. The present application realizes synergistic effect of flue gas desulfurization, steel slag consumption and resource recovery, has stable desulfurization efficiency, far exceeds the low emission standard, and is suitable for wide working condition fluctuation. Using steel slag as a calcium source and desulfurizer closed loop circulation, the raw material and operation cost are greatly reduced, and high purity gypsum and iron concentrate powder can be produced to create income. Steel slag realizes 100% resource utilization, and fundamentally solves the problem of pollution caused by stacking. The process can be directly connected to the existing wet desulfurization equipment, has low modification cost and simple operation and maintenance, greatly reduces the equipment failure rate, and has great industrialization promotion value.

The invention belongs to the technical field of artificial soil, and relates to flow-state solidified soil as well as a preparation method and application thereof. The invention provides flow-state solidified soil. The flow-state solidified soil is composed of soil, a flow-state solidifying agent and water according to the mass ratio of 100: (5-20): (10-40), the fluid curing agent is composed of slaked lime, fly ash, zinc oxide, calcium sulfite, a high-molecular compound and a complexing agent according to the mass ratio of (10-20): (10-20): (5-10): (5-10): (20-40): (1-5); the high-molecular compound is selected from at least one of propylene glycol monolaurate, polyacrylamide and hydroxypropyl methyl cellulose; the complexing agent is selected from at least one of EDTA, EGTA and DTPA. The technical problems that when the slaked lime and the fly ash are used for preparing the flow-state solidified soil, a solidified body formed by the slaked lime and the fly ash and the soil is insufficient in anti-collapse capacity, low in early strength and poor in water stability are solved.

The present invention relates to the field of post-processing and purification of sulfur oxides, and discloses a method and application for preparing calcium polysulfide using a desulfurization intermediate product from a power plant. The method comprises the following steps: (1) adjusting the pH of the desulfurization intermediate product from the power plant, and then mixing the adjusted product with a reducing agent, a catalyst, an auxiliary agent, and a stabilizer to obtain a slurry; (2) subjecting the slurry to a catalytic reduction reaction to obtain a powder product; (3) boiling and crystallizing the powder product to obtain calcium polysulfide; wherein the desulfurization intermediate product from the power plant contains calcium sulfite. The method provided by the present invention has the characteristics of a short process flow, a small amount of raw materials, a low reaction temperature, and a fast reaction rate. It can also reduce desulfurization costs and reduce solid waste in power plants, and is therefore of great practical value. Moreover, the calcium polysulfide product prepared by the method provided by the present invention has a high recovery rate.

This invention belongs to the field of artificial soil technology, and relates to a fluidized solidified soil, its preparation method, and its application. This invention provides a fluidized solidified soil, which is composed of soil, a fluidized solidifying agent, and water in a mass ratio of 100:5~20:10~40; the fluidized solidifying agent is composed of slaked lime, fly ash, zinc oxide, calcium sulfite, a polymer compound, and a complexing agent in a mass ratio of 10~20:10~20:5~10:5~10:20~40:1~5; the polymer compound is selected from at least one of propylene glycol monolaurate, polyacrylamide, and hydroxypropyl methylcellulose; the complexing agent is selected from at least one of EDTA, EGTA, and DTPA. This invention solves the technical problems of insufficient anti-collapse ability, low early strength, and poor water stability in the solidified body formed by slaked lime and fly ash when used in the preparation of fluidized solidified soil.

The invention relates to the field of agricultural resource utilization, and particularly discloses saline-alkali soil conditioning particles rich in humic acid and a use method of the saline-alkali soil conditioning particles. According to the technical scheme, the particles are homogeneous particles prepared from the following raw materials in parts by weight through reactive extrusion granulation: 50-65 parts of weathered coal powder, 5-10 parts of maleic anhydride, 20-30 parts of calcium sulfite, 0.1-0.5 part of manganese sulfate, 5-10 parts of alkyl glycoside, 5-10 parts of sodium lignin sulfonate and 5-15 parts of water. The humic acid content of the weathered pulverized coal is greater than or equal to 50.0%, and the granularity of the weathered pulverized coal passes through a 80-120-mesh sieve; the grafting reaction is initiated by using free radicals generated by auto-oxidation of calcium sulfite, an additional organic initiator does not need to be added, organic residues are avoided, meanwhile, chemical modification of humic acid is achieved, the carboxyl content is increased, and the exchange capacity of conditioning particles for sodium ions in soil is improved.

The utility model relates to the technical field of wastewater treatment, in particular to a sequencing batch reaction device for removing total DNA (Deoxyribose Nucleic Acid) in sewage based on a ferrate and calcium sulfite coupling system. The reaction device comprises an active species generation zone, a reaction zone and a precipitation zone. The active species generation area is provided with a potassium ferrate and calcium sulfite liquid inlet, a reaction liquid outlet and a controllable stirring paddle, and a hose communicated with the reaction area is arranged at the bottom of the active species generation area; the reaction area is provided with an acid-base liquid inlet, a pH probe, a submersible stirrer, a reaction liquid inlet, a sewage sample inlet and a liquid medicine outlet, and a hose communicated with the settling area is arranged at the bottom of the reaction area; and the settling zone is of a funnel-shaped structure. According to the sewage treatment device, potassium ferrate and calcium sulfite are ensured to be fully mixed in the active species reaction zone through effective partitioning, so that the utilization efficiency of a medicament is improved, the medicament and sewage are fully mixed in the reaction zone, pollutants are removed, flocculates are removed through gravity settling in the settling zone, and the total DNA in the sewage is effectively removed.

The invention discloses a thiophanate-methyl production tail gas treatment process, and belongs to the technical field of tail gas treatment, and the thiophanate-methyl production tail gas treatment process comprises the following steps: S1, collecting thiophanate-methyl production tail gas, and carrying out dust removal treatment to obtain pretreated tail gas; s2, the pretreated tail gas is subjected to catalytic incineration through a catalytic incineration reactor, and incineration tail gas is obtained; s3, the incineration tail gas is conveyed into an absorption tower after being subjected to heat exchange and cooling, and slurry and primarily-purified tail gas are obtained; introducing the slurry into a regeneration tank, adding limestone into the regeneration tank, stirring for reaction, introducing the slurry into a sedimentation tank, enabling clarified liquor in the sedimentation tank to overflow into a collection tank for recycling, and treating precipitates in the sedimentation tank by a filter press to recover calcium sulfite and calcium sulfate; s4, conveying the primarily purified tail gas into an adsorption tower filled with an adsorption filler, and then discharging the primarily purified tail gas; according to the tail gas treatment process provided by the invention, sulfur element recovery is realized, and the tail gas purification effect is better.

The utility model discloses a kind of green soil material production systems based on calcium sulfite and sodium sulfite, comprising: reaction kettle shell, a pair of side bearing seat and kettle inner seat;The utility model relates to the technical field of green soil production and processing, the production system is realized by material pushing and stirring structure of accurate calcium sulfite and sodium sulfite with quantitative mixing: two raw materials are proportionally conveyed to reaction kettle shell by independent metering module, ensure uniform mixing by multidimensional continuous turning over after, cooperate with electric auxiliary heating layer and maintain optimum reaction temperature, then catalyst spraying release structure starts, atomizing spray nozzle will catalytic component with droplet form evenly cover material surface, make catalytic reaction efficiently, from process can completely eliminate raw material cross-contamination.

The invention belongs to the field of sewage treatment and advanced oxidation, and adopts a two-step hydrothermal synthesis technology to prepare a composite material molybdenum disulfide intercalation cobalt-manganese layered double hydroxide, and the molybdenum disulfide intercalation cobalt-manganese layered double hydroxide is applied to activated calcium sulfite to degrade chloroquine phosphate in water. The morphology of the LDH is not changed in ion exchange and vulcanization processes, and the growth of MoS2 is restrained in the LDH middle layer, so that the original aggregation structure is changed. Meanwhile, the layered agglomeration structure of LDH is also improved, the compound MoS2-coated LDH is relatively loose, and the specific surface area of the catalyst is effectively increased, so that the catalytic efficiency is improved. The method is simple to operate, and the prepared material has excellent reusability and stability and has certain application value in wastewater treatment.

The application discloses a kind of dynamic adjustment method and system based on magnetic suspension fan of desulfurization oxidation air volume, the method real-time acquisition desulfurization system operating parameter, target air volume is calculated based on multi-parameter dynamic correlation model, the model is through the pre-judgment of quantification unit load change to flue gas total amount, the proportional relationship of flue gas flow and oxidation demand and the feedback regulation of calcium sulfite content, dynamically adjust each parameter influence weight to generate target air volume;According to target air volume, the rotational speed of magnetic suspension fan is adjusted, using its wide air volume adjustment range and high-precision frequency control characteristics, outlet pressure is stabilized in set interval and realizes the rapid response of air volume;Through double closed loop feedback mechanism optimization adjustment process, model parameters are periodically corrected in combination with remote operation and maintenance platform to improve long-term operation efficiency.The application can realize the rapid response and accurate matching of desulfurization system oxidation air volume, significantly improve desulfurization efficiency and reduce energy consumption.

This application provides a method for preparing α-hemihydrate gypsum using desulfurized gypsum. The method involves mixing desulfurized gypsum with salt production effluent, then introducing air to allow the calcium carbonate and calcium chloride in the desulfurized gypsum to react with the effluent to form calcium sulfate, while simultaneously oxidizing calcium sulfite to calcium sulfate. After a period of time, the mixture is placed in an autoclave with a certain amount of crystallizing agent added and stirred thoroughly. After the reaction is complete, the mixture is immediately filtered, dried, and ground to obtain α-hemihydrate gypsum. The method for preparing α-hemihydrate gypsum using desulfurized gypsum provided in this application can improve the conversion rate of desulfurized gypsum to α-hemihydrate gypsum and meets the requirements of a green economy, thus possessing significant economic and environmental benefits.

The invention discloses a cooperative treatment method of sulfur dioxide-containing waste gas and sulfate ion-containing wastewater, which comprises the following steps: (1) dispersing a catalyst containing metal Ni nanoparticles into the sulfate ion-containing wastewater, introducing the sulfur dioxide-containing waste gas, controlling the pH value to be 2-5, and reacting; (2) adding salt or alkali containing calcium ions, adjusting the pH value to 9-10, and stirring for reaction to generate calcium sulfite precipitate; sulfate wastewater is directly treated by using SO2 waste gas, so that waste cooperative treatment is achieved, and waste is treated with waste.

The invention discloses a manganese removal method based on potassium permanganate and calcium sulfite synergistic activation molecular oxygen, and belongs to the technical field of water treatment. The method comprises the following steps: firstly, adding potassium permanganate into manganese-containing water for preliminary oxidation, then adding calcium sulfite with slow release performance, reacting sulfite ions slowly and continuously released by the calcium sulfite with dissolved oxygen in the water to generate sulfate free radicals, oxidizing the residual divalent manganese into manganese dioxide, and filtering and removing the manganese dioxide through coagulating sedimentation. According to the method, the dosage of potassium permanganate is reduced through free radical reaction of calcium sulfite, and potassium permanganate is reduced when the potassium permanganate is excessive, so that the problem of effluent chromaticity is avoided; in addition, the final product calcium sulfate oxidized by calcium sulfite has a coagulation aiding effect, is beneficial to instability and precipitation of manganese dioxide, and guarantees the manganese removal effect. The method is high in manganese removal efficiency, stable in operation and low in cost, is slightly influenced by the fluctuation of the manganese concentration of the inlet water, solves the problems that the dosage is difficult to control and the chromaticity is easy to exceed the standard in the traditional process, and is favorable for guaranteeing the water quality safety of supplied water.

The present invention discloses a method for double alkali desulfurization, which relates to the field of double alkali desulfurization. The method comprises the following steps: step 1: cooling the flue gas, wherein a ventilation pipe is provided on the outer wall of the flue gas duct; step 2: desulfurization reaction, wherein the flue gas after cooling enters the desulfurization tower and is sprayed with alkali solution; step 3: high temperature decomposition, wherein the bottom of the calcium sulfite collecting tank is heated at high temperature; step 4: oxidation and reduction, wherein the calcium sulfite collecting tank is in contact with the air; step 5: desulfurization and reduction, wherein the calcium sulfite is pushed into the regeneration tank by a pushing mechanism to react with the desulfurization liquid. The calcium sulfite of the present invention is decomposed into calcium oxide and sulfur dioxide by heat, and the sulfur dioxide is directly discharged after being detected inside the desulfurization tower. The internal calcium oxide absorbs moisture in the air to generate calcium hydroxide, which can then be discharged into the regeneration tank to facilitate the reduction of the desulfurization liquid into an absorbent. This process prevents the calcium sulfite from being blocked while reducing the workload of the staff in subsequent processing.

The application discloses high-performance dechlorination mineralization ceramic microspheres and a preparation method thereof. The ceramic microspheres comprise the following components in mass fraction: 90-93% of calcium sulfite, 3-4% of calcium oxide, 3-4% of zinc oxide and 1-2% of silicon dioxide. The particle size of the ceramic microspheres is 1-2 mm. Compared with the existing ceramic material sintering technology, the dechlorination mineralization ceramic microspheres are composed of calcium sulfite, calcium oxide, zinc oxide and silicon dioxide, deionized water and external mechanical pressure are used to help the ceramic powder densification, and rapid forming is realized at a lower ceramic sintering temperature, so that time can be saved and production capacity can be improved in actual production. Meanwhile, the dechlorination mineralization ceramic microspheres prepared by using the preparation process can be filled in a filter container and directly applied, the content of calcium sulfite is as high as 90% or more, the dechlorination performance of the unit gram weight calcium sulfite ceramic microspheres is much better than that of common calcium sulfite powder and particles, and the dechlorination mineralization ceramic microspheres also have a mineralization effect.

The application discloses a kind of collaborative processing method of containing sulfur dioxide waste gas and containing sulphate ion waste water, comprising the following steps: (1) containing metal Ni nanoparticle catalyst is dispersed in sulphate ion containing waste water, and sulfur dioxide containing waste gas is imported, and pH is controlled between 2~5, and reaction is carried out;(2) calcium ion containing salt or alkali is added, and pH is adjusted to 9~10, and stirring reaction is generated calcium sulfite precipitate.The application directly treats sulfate salt waste water using SO2 waste gas, achieves waste collaborative processing, realizes "waste treatment with waste".

The invention belongs to the field of yellow phosphorus tail gas, and particularly relates to a yellow phosphorus tail gas incineration treatment method which comprises the following steps that S1, yellow phosphorus tail gas is released into a combustion chamber, sulfur and phosphorus in the yellow phosphorus tail gas are combusted, and sulfurous acid and phosphoric acid are generated with moisture in the tail gas; s2, calcium carbonate is added into the combustion chamber and is decomposed into calcium oxide through combustion of yellow phosphorus tail gas; s3, reacting the generated calcium oxide with sulfurous acid to generate calcium sulfite; reacting the generated calcium oxide with phosphoric acid to generate calcium phosphate; and S4, discharging the incinerated tail gas. The invention provides a yellow phosphorus tail gas incineration treatment method and system, and aims to solve the problem that in the prior art, the equipment cost is increased due to corrosion caused by combustion of yellow phosphorus tail gas.