480 results about "Ion exchange" patented technology

This invention discloses a composite sponge carrier for anaerobic ammonia oxidation, its preparation method, and its application, belonging to the field of wastewater treatment technology. The composite sponge carrier comprises: a porous polyurethane sponge and a composite component loaded on the surface and internal pores of the porous polyurethane sponge; wherein the composite component includes chitosan-modified biochar as a microbial affinity functional component and zeolite powder as a component for ammonia nitrogen adsorption and ion exchange regulation. This invention introduces more active functional groups and hydrophilic interfaces conducive to microbial attachment through chitosan modification, and then co-impregnates and loads it with zeolite powder onto the surface and pores of the polyurethane sponge. This improves the composite sponge carrier's retention and enrichment capacity for anaerobic ammonia oxidizing bacteria, improves the local substrate environment during the start-up phase, promotes rapid biofilm establishment, and enhances the system's operational stability.

The application discloses a salbutamol sulfate sustained-release tablet and a preparation process thereof. The preparation process comprises the following steps: drug micronization treatment, drug and ion exchange resin compounding, granulation with hydrophilic gel matrix material, gradient temperature control drying, total mixing after whole granulation, tabletting, double controlled-release coating, ladder solidification treatment and screening and packaging. Through the synergistic sustained-release effect of the ion exchange resin and the hydrophilic gel matrix material, the double controlled-release coating and the ladder solidification process, the application effectively inhibits drug burst release, realizes smooth and long-lasting release, reduces impurity content, and improves product stability and batch reproducibility. The obtained sustained-release tablet releases 20%-40% in 2 hours and 80% or more in 8 hours in a pH 6.8 phosphate buffer, and the quality is controllable, so the sustained-release tablet is suitable for industrial production.

The present disclosure provides a Group II-VI core-shell quantum dot and a preparation method therefor. A quantum dot shell having a gradient alloy structure is gradually grown by using a precursor that has a reactivity gradient. The gradient alloy structure has a band gap that gradually increases from inside to outside, thereby solving the problem of difficulty in epitaxial growth caused by a decrease in the surface activity of a quantum dot along with an increase in the size thereof. By using zinc halide and octanethiol to regulate crystal facets, the proportion of polar facets on the surface of the quantum dot is increased, and the stability of the quantum dot is significantly improved. Moreover, provided is a low-cadmium quantum dot core. A hot-injection method is used to perform nucleation and growth of ZnSe at a high temperature, a cadmium precursor is then added after the stable nucleation of ZnSe, and cadmium / zinc ion exchange is performed by utilizing the binding energy of selenium / cadmium that is stronger than that of selenium / zinc, thereby forming a CdZnSe ternary core, which can solve the problem of it being difficult for blue-light quantum dots that use CdZnSe as a light-emitting core to cover the pure blue band.

The application relates to the technical field of high polymer materials, in particular to ammonia-removing and humidity-controlling water gel as well as a preparation method and application thereof, which comprises the following raw materials: deionized water, AM, MBA, Gly, lithium chloride, 2-hydroxy-2-methyl propiophenone, magnesium chloride or magnesium oxide; the AM and the MBA are added into the deionized water, and polymerization is initiated by 2-hydroxy-2-methyl propiophenone and ultraviolet light to form a polyacrylamide network, so that the novel water gel can stably control humidity and effectively remove ammonia in long-term storage, effectively adsorb ammonia and provide molecular-level water molecules, and the required humidity of a cigar is maintained; secondly, the MBA is added into the water gel to form a more stable and porous three-dimensional crosslinking network, which can not only adjust the moisture absorption / relaxation rate of the water gel, realize humidity buffering, but also adsorb ammonia molecules through acid-base neutralization, ion exchange, hydrogen bonding, electrostatic interaction, so that the water gel can maintain the required humidity of the cigar for a long time and reduce the volatilization of ammonia.

This invention belongs to the field of wet electronic chemicals technology, specifically relating to a method for preparing electronic-grade hydrogen peroxide. The method includes the following steps: adjusting the concentration of raw hydrogen peroxide, and then filtering it sequentially through a reverse osmosis membrane, a modified cation exchange resin, an anion exchange resin, and a mixed ion exchange resin to obtain electronic-grade hydrogen peroxide. The modified cation exchange resin used is modified based on conventional cation exchange resin through pore expansion and grafting, optimizing the spatial matching of pore structure and functional sites. This achieves passivation of metal ions, enhanced adsorption capacity, and improved oxidation resistance, as well as a deep synergistic effect of these three effects. Ultimately, it achieves the dual goals of efficient purification and stable operation of the resin in the hydrogen peroxide system. The resulting electronic-grade hydrogen peroxide can reduce the content of single impurity metal ions to below 5 ppt, meeting the requirements of SEMI G5 standards, and can be directly applied to high-end manufacturing fields such as semiconductor wafer cleaning.

The application belongs to the technical field of molecular sieve catalytic material preparation, and particularly relates to a method for preparing a zinc-modified HZSM-5 molecular sieve catalyst by a double-bed in-situ reduction method and application thereof. The application forms a double-bed structure by loading ZnO and HZSM-5 molecular sieves in the same reaction tube respectively, and performs in-situ reduction treatment under a hydrogen-containing atmosphere, so that zinc species acts on the HZSM-5 molecular sieve in a mode different from traditional ion exchange methods and impregnation methods, thereby obtaining a zinc-modified HZSM-5 molecular sieve catalyst. The method is clear in steps and simple in operation, and can be used for adjusting the structural properties, acid characteristics and catalytic performance in a methanol-to-aromatics reaction of the HZSM-5 molecular sieve.

The present application relates to a process for producing synthetic ammonia by using hydrogen-containing tail gas, comprising the following steps: S1: sodium cyanide tail gas is pressurized, then heated and water-cooled. S2: the impurity-removed tail gas is desulfurized. S3: the desulfurized tail gas is mixed with chlor-alkali tail gas, the mixed gas is heated and deoxidized. S4: the deoxidized tail gas is pressurized and enters a PSA (pressure swing adsorption) device for pressure swing adsorption treatment, obtaining high-purity hydrogen. In the PSA device, dehydrating, carbon dioxide, methane, carbon monoxide and nitrogen adsorbents are sequentially arranged. The carbon dioxide adsorbent is activated carbon modified by carbonate and strong alkali, and the nitrogen adsorbent is 13X zeolite molecular sieve modified by Na + and Ba 2+ and Ca 2+ ion exchange. S5: nitrogen reacts with the high-purity hydrogen obtained in step S4 to generate ammonia. The present application can improve the adsorption capacity of the adsorbent for impurity gas, thereby reducing the replacement frequency of the adsorbent, prolonging the service period and service life of the adsorbent, and improving the production efficiency.

Provided is a titanium oxide powder, wherein the A / BET specific surface area is 2.3×10-5[ms-1 / (m2 / g)] or higher when calculated from the BET specific surface area and the inverse A of the spin-spin relaxation response time T2 measured by performing pulsed NMR on a liquid mixture in which the BET specific surface area measured via the nitrogen adsorption method is at least 80m2 / g and less than 300m2 / g, the anatase content of the crystal phase measured by the powder X-ray diffraction (XRD) method is 90% or more, and the titanium oxide content prepared using ion-exchanged water is 10 mass%.

Electrodes useful for membrane-free electrode assemblies, membrane-free electrode assemblies, methods of making, and uses thereof. The electrodes comprise a catalyst layer; and a solid polymer electrolyte layer for ion-conduction deposited on the catalyst layer. The solid polymer electrolyte layer is deposited on a catalyst layer as an ionomer resin solution and forms an ion conducting layer thereby eliminating the need for a stand-alone membrane that is introduced as a separate component into electrode assemblies.

The application discloses a lithium ion battery single-crystal lithium nickelate positive electrode material and a preparation method thereof. The material has a general formula of LiNiO2; the material has a single-crystal morphology, a particle size of 1-15 mu m, a space group of R3m, and an O3 phase structure. Compared with the prior art, the application has the following advantages: (1) the method combines the advantages of a high-temperature solid-phase method and a low-temperature molten salt-ion exchange method, on the one hand, problems such as lithium salt volatilization, LiNiO2 grain size being too large, Li + / Ni 2+ mixing and Ni 3+ decomposition caused by high-temperature sintering are avoided, and on the other hand, the defect that lithium ions are washed out in the cleaning process after the low-temperature molten salt-ion exchange is overcome; (2) the positive electrode material prepared by the method has a larger interlayer spacing, is beneficial to the rapid transmission of lithium ions, simultaneously reduces intercrystalline cracks caused by the change of the interlayer spacing in the ion transmission process, and thus has better rate performance and cycle stability.

This invention relates to the field of membrane preparation technology and discloses a method for preparing a bipolar membrane with the same main chain for both anion and cation exchange layers. Using sulfonated polyarylene ether sulfone as the cation exchange layer and Br-3C-IM imidazole salt-functionalized polyarylene ether sulfone as the anion exchange layer improves the compatibility between the anion and cation layers, thereby enhancing the mechanical and chemical stability of the bipolar membrane. Using a bifunctionalized MOF as the intermediate interface layer, the –SO3H and –NH2 groups in the MOF interact with the anion and cation layers to form intramolecular hydrogen bonds, resulting in strong adhesion between the anion and cation layers and the intermediate interface layer, which helps prevent bipolar membrane delamination. Furthermore, the bifunctionalized MOF contains two catalytic sites acting as inorganic metal ions and organic ligands, promoting the water dissociation rate through a protonation-deprotonation mechanism.

The application provides a preparation method of a composite molecular sieve and application of the composite molecular sieve in heavy oil cracking, and the preparation method comprises the following steps: dissolving an aluminum source, a silicon source and a structure directing agent in water, and then performing crystallization treatment to obtain a ZSM-5 crystal seed solution; etching Y type molecular sieve in water by using an alkaline substance to form a hollow structure, and then mixing the hollow Y type molecular sieve with acidic silica sol to obtain a solution containing the hollow Y type molecular sieve; mixing the ZSM-5 crystal seed solution and the solution containing the hollow Y type molecular sieve, and then performing temperature crystallization, and then separating a crystallization product, and then performing washing, drying and calcination to obtain a ZSM-5 / Y composite molecular sieve, and then performing ion exchange reaction, and then performing calcination to obtain a H type ZSM-5 / Y composite molecular sieve product. The composite molecular sieve synthesized by the application has the advantages of high activity, good selectivity and the like when the composite molecular sieve is prepared into a catalyst, high liquefied gas and propylene yield can be obtained, and the composite molecular sieve is particularly suitable for the field of petrochemical catalytic cracking.

This invention relates to the field of amino acid mother liquor resource utilization technology, specifically disclosing a method for the resource utilization of amino acid mother liquor. Specifically, the method involves: treating the amino acid mother liquor by electrodialysis to obtain an inorganic salt solution and desalted material; using the inorganic salt solution as an inorganic salt supplement for reuse in the amino acid fermentation production process; concentrating, crystallizing, and separating the desalted material to obtain crude amino acids and final mother liquor; and spray-granulating the final mother liquor to produce organic fertilizer. Compared with existing ion exchange and chromatographic separation technologies, the process provided by this invention has significant advantages such as simple flow, stable operation, no need for acid-base regeneration, and low equipment investment and operating costs. It achieves both amino acid resource recovery and the resource utilization of inorganic salt impurities, realizing a balance between clean production and economic benefits.

The molecular adsorbent according to the present application adsorbs a polar molecule, and contains, as an active ingredient, an ion exchanger having: an ion exchange resin containing an ion exchange group which is a strongly acidic group; and a metal ion or a complex of a metal ion which is ion-exchanged with the ion exchange group. The polar molecule contains a nitrogen atom having a lone pair of electrons. The metal ion is one or more of a metal ion of 3 valence or more, Co 2+ , Cu 2+ , Ni 2+ , Mn 2+ , V 2+ , Cs + , Rb + , and K + .

This invention discloses a method for potassium resource recovery from purified ash residue in calcium carbide production, comprising the following steps: crushing the purified ash residue from calcium carbide production, adding a certain amount of solvent to dissolve potassium ions and adjusting the alkalinity of the solution to retain high-valence calcium and magnesium ions in the ash residue; conducting a leaching reaction on the calcium carbide production ash residue through countercurrent circulation to significantly increase the potassium concentration in the leaching solution; adjusting the alkalinity of the potassium-rich solution and adding a functional extractant to perform ion exchange with potassium ions; loading the potassium extractant and separating it through an acidification reaction to obtain a potassium salt solution, which is then obtained by evaporation and crystallization to obtain solid potassium salt. The method of this invention can not only effectively extract potassium from purified ash residue from calcium carbide production, but also obtain potassium salts that meet industrial-grade standards. Furthermore, the method is simple, easy to operate, and readily scalable for industrial production.

This disclosure provides a hierarchical porous molecular sieve catalyst, its preparation method, and its application. The method includes: calcining and activating an aluminosilicate molecular sieve support to remove adsorbed impurities from the support surface; placing the activated molecular sieve support in an alkaline solution with a concentration of 0.1-0.4 M and stirring to perform desilication modification to construct a hierarchical porous structure; centrifuging the suspension obtained in the above steps, washing it with ultrapure water until neutral, and then drying it; adding the dried sample to an ammonium salt solution and performing multiple ion exchanges at 70-90℃ for 1.5-2.5 hours each time, filtering and rinsing, and then calcining at 450-550℃ for 3-5 hours to obtain the hierarchical porous molecular sieve catalyst; the mesopore volume to micropore volume ratio of the hierarchical porous molecular sieve catalyst is 1.36-3.2:1, and the Brønsted acid content is 200-250 μmol / g. The preparation method is simple and controllable, requires no precious metal loading, and produces a catalyst with high synergistic matching between pores and acidity, providing a high-performance catalytic material for low-temperature hydrogen-free conversion of polyolefins.

This invention discloses a natural polysaccharide-based multilayer composite encapsulated probiotic and its preparation method, relating to the field of functional food and microbial preparation technology. This invention provides metabolic substrates for the probiotics through a probiotic-prebiotic co-encapsulation core located in the innermost layer, enabling them to maintain physiological activity during encapsulation. The first anionic polysaccharide encapsulation layer uses sodium alginate, which forms a three-dimensional gel network in a calcium-ion-containing curing solution. In the acidic environment of the stomach, the carboxyl groups in the calcium alginate gel undergo carboxylation, and the network shrinks and densifies, effectively blocking the invasion of hydrogen ions and pepsin, thus physically isolating the probiotics from gastric juice. When the encapsulated probiotics enter the small intestine and colon, the chitosan in the second pH-responsive composite encapsulation layer undergoes a conformational change due to amino deprotonation. Simultaneously, phosphate and citrate ions in the outer environment exchange ions with calcium alginate, achieving a triggered release of the probiotics in the colon.

This invention discloses a waste acid recovery method based on ion exchange separation technology, belonging to the field of waste acid recovery technology. The method includes the following steps: passing a waste nitric acid solution containing aluminum and chloride ions through a cation exchange resin to adsorb aluminum ions; adding silver nitrate solution to the adsorbed waste liquid to allow silver ions to react with chloride ions to form silver chloride precipitate; filtering out the silver chloride precipitate to obtain a nitric acid solution; removing the silver chloride precipitate, using aluminum foil as a reducing agent, and adding a small amount of hydrochloric acid to reduce the silver chloride to silver powder; washing the reduced silver powder and dissolving it in nitric acid to obtain a silver nitrate solution for recycling. This waste acid recovery method based on ion exchange separation technology solves the problem of excessive total nitrogen in wastewater discharge; it also significantly reduces waste acid treatment costs and improves economic efficiency.

An ion exchanger filtration device includes a housing comprising a cover and at least one inlet opening and at least one outlet opening for a medium, the housing extending in an axial direction; and an ion exchanger cylinder enclosed by the housing and including one or more inlet ports at an upstream end, and a circumferentially extending wall enclosing a container filled with ion exchanger material, the wall including one or more outlet ports at a downstream end opposite the upstream end. A main flow path through the ion exchanger cylinder is provided for the medium between the one or more inlet ports and the one or more outlet ports. The housing also includes a bypass passage between the inlet and outlet openings for allowing the medium to bypass the ion exchanger cylinder. The ion exchanger cylinder also includes a closing element configured to close the bypass passage when the ion exchanger cylinder is installed in the intended installation position of the housing.

The application relates to a preparation method of a composite electrolyte membrane, and steps of the method comprise the following: S1, dissolving polyethylene terephthalate in a first organic solvent, and preparing a three-dimensional macroporous membrane through electrostatic spinning; after sequentially performing acid modification treatment and lithium ion exchange treatment on the three-dimensional macroporous membrane, a carrier is obtained; S2, dissolving a sulfide electrolyte, a binder and a dispersant in a second organic solvent to obtain a slurry; S3, scraping the slurry on the surface of the carrier, and performing first drying on the carrier coated with the slurry to obtain an intermediate electrolyte membrane; spraying the slurry on the surface of the intermediate electrolyte membrane again, and performing second drying on the intermediate electrolyte membrane coated with the slurry to obtain the composite electrolyte membrane. Through the acid modification treatment, the lithium ion exchange treatment and the scraping and then spraying, the preparation method improves the interaction force between the electrostatic spinning membrane and the sulfide electrolyte slurry, so that the compactness of the composite electrolyte membrane is improved.

The application discloses a high-thermal-stability high-nickel ternary material, a preparation method and application. The application utilizes the characteristic that the high-nickel ternary material is sensitive to water, reconstructs a layer of NiOOH on the surface of the high-nickel ternary material, changes the NiOOH coating layer into various transition metal oxyhydroxides by means of an ion exchange reaction, constructs a layer of phosphide on the surface of the transition metal oxyhydroxide through a phosphorization reaction, finally, decomposes the various transition metal oxyhydroxides into high-entropy oxides by means of high-temperature calcination, and then obtains a high-nickel ternary material coated with double layers; the high-entropy oxides have high thermal stability and lithium ion conductivity. In-situ construction of the high-entropy oxide coating layer can not only improve the thermal stability of the high-nickel material, but also help to improve the rate performance and cycle performance of the high-nickel ternary material. The phosphide has strong conductivity, and in-situ coating of the phosphide on the surface of the high-entropy oxide can form a complementary advantage with the high-entropy oxide, and further improve the rate performance of the high-nickel ternary material.

The present application relates to solid waste resource application field, especially in a kind of preparation method of morphology controllable cerium-containing lanthanum solid waste-based composite material and its application in halogenated VOCs degradation.The preparation method includes the following steps: rare earth polishing powder is obtained by acid leaching leaching liquor;Leaching liquor is mixed with oxalic acid and precipitated, and the obtained precipitate is dried, calcined, to obtain morphology controllable lanthanum cerium oxide;Lanthanum cerium oxide is mixed with silicon source, aluminum source, template agent, etc., by hydrothermal reaction, centrifugal, drying, calcination and ion exchange, to obtain composite catalyst.The present application uses "leaching-morphology control-zeolite loading" synergistic strategy, successfully prepares a kind of composite catalyst with waste rare earth polishing powder as raw material, with lanthanum cerium co-leaching and morphology controllable characteristics.The method not only realizes the high-value resource utilization of waste rare earth polishing powder, but also shows excellent catalytic performance in the degradation of dichloromethane reaction, and shows good application prospect in VOCs pollution control field.

The present invention relates to a monomer having a functional group, a heat-resistant polymer having a rigid main chain using same, and a manufacturing method therefor. Particularly, the present invention relates to a monomer having a pentafluorophenyl group of chemical formula 1, a heat-resistant polymer of chemical formulas 2 and 3 having the monomer of the present invention, and a manufacturing method therefor. According to the present invention, a novel polymer obtained by polymerizing a novel monomer of the present invention has a reactive group of reactive pentafluorophenyl, and thus may exhibit excellent reactivity and enable synthesis of polymers having an excellent polymerization degree by using a polyhydroxyalkylation polymerization method without a protective group. Due to such excellent reactivity, the polymer of the present invention can cause a nucleophilic substitution reaction under mild conditions, and thus an ion-exchange group, such as sulfonic acid or phosphonic acid, can be introduced under mild conditions through such a reaction. In addition, the novel polymer of the present invention has high heat resistance and chemical resistance and good tensile strength, and thus can be used as an engineering plastic. In addition, the novel polymer of the present invention can be imparted with ionic conductivity or other functionalities by introducing a phosphonic acid group or a sulfonic acid group into any one of fluoro positions of pentafluorophenyl of the polymer, and accordingly, may be used as an electrolyte membrane for a fuel cell or water electrolysis. [Chemical formula 1] [Chemical formula 2] [Chemical formula 3]

Systems and methods are provided for separation / extraction of rare earth elements (REE), yttrium (Y), and / or radium (Ra) from phosphogypsum. Extraction of REE, Y, and / or Ra can be achieved by treating phosphogypsum with acidic aqueous media at ambient temperature in a reactor at low liquid:solid (L:S) ratios (e.g., L:S in a range of from 1:1 to 15:1), followed by ion exchange chromatography or solvent extraction of relevant anions and / or cations to ensure that the mineral hosts remain undersaturated while the gypsum remains saturated in the solvent. Grinding of the phosphogypsum (e.g., in a slurry mill) can be performed to ensure that minor mineral inclusions are fully accessed by the solvent.

The application discloses a lithium type X molecular sieve adsorbent and a preparation method thereof, and belongs to the technical field of adsorption separation. The preparation method of the lithium type X molecular sieve adsorbent comprises two steps of preparing a low-silicon aluminum X molecular sieve and ion exchange. The lithium type X molecular sieve adsorbent prepared by the method has a lithium ion exchange degree of 97.9-99.1%, a molar ratio of SiO2 and Al2O3 of 2.01-2.10, a nitrogen adsorption amount of 32.62-34.94 mL / g, an oxygen adsorption amount of 2.40-2.75 mL / g, and a nitrogen-oxygen separation coefficient of 11.86-14.56.

Provided is a catalyst layer-forming composition capable of forming a catalyst layer in which the occurrence of cracks is suppressed. This composition for forming a catalyst layer contains a fluorine-containing polymer having a unit containing a cyclic ether structure and having an ion exchange group, a catalyst, and a solvent, the solvent containing water and an alcohol, the alcohol containing propanol, the content of water being 50% by mass or more with respect to the total mass of the solvent, and the content of ethanol being 50% by mass or more with respect to the total mass of the solvent. The content of propanol is 50% by mass or more with respect to the total mass of the alcohol.

This invention provides a method for preparing a high-performance potassium adsorbent for potassium extraction from seawater, belonging to the field of ion adsorbent technology. The present invention features a large potassium adsorption capacity, high ion exchange site density, and outstanding enrichment capacity for low-concentration potassium ions. It exhibits very low adsorption capacity for calcium and magnesium ions in the influent, precisely rejecting high concentrations of coexisting sodium, calcium, and magnesium ions, achieving exclusive adsorption only for potassium ions, resulting in high purity of the enriched product. It possesses a highly stable crystal framework structure resistant to acids and alkalis, improving the cycling stability of the potassium adsorbent. The small crystal size is beneficial for increasing the adsorption capacity of the potassium adsorbent; due to the small crystal size, growth is more complete, with fewer crystal defects, which is conducive to improving selectivity and cycling stability. The three-stage calcination crystallization process allows different materials to undergo precise chemical reactions or crystal growth at different temperature stages, facilitating the acquisition of potassium adsorbent crystals with high adsorption capacity, high selectivity, and high cycling stability.

A method for recovering lithium from waste according to the present invention comprises the steps of: preparing lithium carbonate; converting the lithium carbonate into slurry containing lithium hydroxide and calcium carbonate by using calcium hydroxide; performing solid-liquid separation of the slurry; first purifying the solid-liquid separated lithium hydroxide aqueous solution to obtain solid waste and a purified lithium hydroxide aqueous solution; second purifying the purified lithium hydroxide aqueous solution through an ion exchange resin; crystallizing the lithium hydroxide aqueous solution subjected to the second purification to obtain lithium hydroxide, wherein the second purification step utilizes an acid regeneration method to regenerate the ion exchange resin, thereby generating acid-regeneration wastewater and a lithium hydroxide purge solution is generated in the step of crystallizing the lithium hydroxide aqueous solution; carbonating the lithium hydroxide purge solution to obtain lithium carbonate and lithium carbonate purge wastewater; preparing a wastewater mixture by mixing the acid-regeneration wastewater, the lithium carbonate purge wastewater, and the solid waste; neutralizing the wastewater mixture; introducing a lithium adsorbent into the neutralized wastewater mixture to selectively adsorb lithium; desorbing the adsorbed lithium to obtain a desorption solution; carbonating the desorption solution to obtain lithium carbonate and a carbonated filtrate; and recycling the carbonated filtrate to the step of neutralizing the wastewater mixture.

This utility model discloses a comprehensive treatment system for zinc-containing waste generated in viscose fiber production, belonging to the field of waste treatment in viscose fiber production. The system includes a reaction tank, filter press, pretreatment device, filter, ion exchange resin column, and acid bath preparation tank, ensuring a comprehensive treatment pathway for zinc-containing waste. This facilitates the mixing of highly acidic, high-salt zinc-containing wastewater with zinc-containing sludge. The strong acidity of the wastewater allows for the acid leaching of zinc sulfide and zinc hydroxide in the sludge, simultaneously obtaining a zinc sulfate solution and recovering sulfate to prepare sodium sulfate and sulfuric acid. This reduces the salinity of the wastewater, thereby decreasing the amount of reagents used in treating zinc-containing wastewater, mitigating scaling risks, and reducing the load on subsequent biochemical systems.