341 results about "SULFATE ION" patented technology

The invention discloses a cementing material for a solid waste-based road of a coal-fired power plant and a preparation method of the cementing material. The cementing material mainly comprises a cementing component, an alkali-activated component and a reinforcing component, the gelling component is a mixture of coal-fired power plant fly ash and furnace slag; the alkali-activated component is a mixture of alkali residues, red mud, blast furnace slag and coal-fired power plant desulfurized gypsum; the reinforcing component is rice hull ash or peanut hull ash. The mass ratio of the gelling component to the alkali-activated component is (4 / 1)-(10 / 1); and the addition amount of the reinforcing component is 1-3% of that of the main body material. The coal-fired power plant solid waste fly ash, the furnace slag and the desulfurized gypsum are used as main bodies, a small amount of other industrial solid waste is added, and the cementing material belongs to a full-solid-waste low-carbon cementing material and can be applied to a road base, a subbase or a base layer. The invention has the characteristics of low carbon emission, high solid waste consumption, simple production process and strong pavement performance, and in addition, the invention has a good stabilization effect on the problem that part of solid waste heavy metals and sulfate ions in a coal-fired power plant exceed the standard.

The invention provides a method, a device and equipment for predicting corrosion current and corrosion of steel bars in concrete in a low-pressure environment, and belongs to the technical field of engineering simulation modeling. The method comprises the following steps: establishing a coupling transmission model in concrete considering oxygen concentration, sulfate ion diffusion behavior and chloride ion diffusion behavior; building a reinforcement corrosion current density and corrosion depth prediction model for predicting the number of charges at different positions of the reinforcement in the concrete, and calculating the corrosion depth and the corrosion product content based on the corrosion current density; and establishing a linear elastic damage model for simulating concrete damage evolution caused by steel bar corrosion according to the corrosion product content output by the steel bar corrosion current density prediction model so as to realize accurate prediction of corrosion and damage. According to the method, oxygen concentration changes under low air pressure are considered, oxygen diffusion is described, output of a transmission model serves as a dynamic variable to be introduced into the corrosion current calculation process, and the accuracy of corrosion current and steel bar corrosion prediction is improved.

The invention discloses a deep fluorine removal agent and application thereof in wastewater in the photovoltaic industry, and belongs to the technical field of fluorine-containing wastewater treatment.The deep fluorine removal agent is obtained by conducting coordination on cross-linked hybrid chitosan microspheres and lanthanum ions to obtain composite microspheres and then synthesizing zirconium-based MOF on the composite microspheres through a hydrothermal synthesis method. The pore channels of the MOF facilitate the passing of fluorine ions but not the passing of sulfate ions, play a certain barrier role, facilitate the enrichment of the fluorine ions on the surfaces of the composite microspheres and the selective adsorption of the lanthanum ions on the fluorine ions, so that the fluorine ions are fixed, and the combination stability of the fluorine ions and the lanthanum ions is greater than that of the sulfate ions. The sulfate ions are in disadvantage when competitive adsorption with the fluorine ions, the selectivity of the deep fluorine removal agent to the fluorine ions is improved, the magnesium ions can be combined with the fluorine ions to generate complexes and can be combined with the sulfate ions to generate soluble magnesium sulfate, and interference of the sulfate ions is reduced through cooperation of the magnesium ions and the sulfate ions.

The invention relates to the technical field of concrete crack repairing agents, in particular to a triggered precipitation type concrete crack repairing agent as well as a preparation method and application thereof. The repairing agent is prepared from the following raw materials: sulphoaluminate cement, nano anhydrite with a core-shell structure, fluorine-phosphorus composite seed crystal, magnesium oxide, metakaolin and a water reducing agent, wherein the core-shell structure nano anhydrite is prepared by coating mesoporous silica with nano anhydrite, and the fluorine-phosphorus composite seed crystal is prepared from calcium fluoride and monocalcium phosphate through a hydrothermal reaction. According to the trigger precipitation type concrete crack repairing agent prepared by the invention, sulfate ions are slowly released through the core-shell structure nano anhydrite, the crystal form of ettringite is regulated and controlled through the fluorine-phosphorus composite seed crystal, the problems that a traditional repairing agent shrinks and falls off in the later period, the high-temperature strength is suddenly reduced, and the binding power is insufficient are solved, and the trigger precipitation type concrete crack repairing agent is suitable for concrete structure crack repairing and high-temperature environment engineering.

The invention relates to a method for extracting lithium from a salt lake and synchronously removing silicon and boron. The method comprises the following steps: pre-treating and filtering lithium-containing brine; carrying out reverse osmosis concentration treatment to concentrate lithium to be more than 2.5 g / L; carrying out nanofiltration treatment to remove magnesium, calcium and sulfate ions; treating by adopting an electrodialysis system to obtain a high-silicon and high-boron desalted solution and a low-silicon and low-boron lithium concentrated solution; the low-silicon and low-boron lithium concentrated solution is treated with chelating resin and boron removal resin, so that magnesium and calcium ions are smaller than or equal to 2 mg / L, boron is smaller than or equal to 20 mg / L, and the refined lithium concentrated solution is obtained; concentrating by an evaporation system, adding a precipitant, precipitating, filtering, washing, crushing and demagnetizing to obtain a low-silicon low-boron battery-grade lithium carbonate product. The invention further discloses a system for extracting lithium from the salt lake and synchronously removing silicon and boron, the complex and low-efficiency boron removal and silicon removal nanofiltration process is adopted, and concentration of lithium and efficient removal of silicon and boron are synchronously achieved; silicon scaling pollution caused by membrane separation and heat exchanger tube nests is avoided, and deep removal of silicon and boron is realized.

The invention discloses modified biogas residue-based hydrothermal carbon, a preparation method thereof and a dry digestion method for kitchen waste, and belongs to the technical field of waste organic matter recycling. The preparation method comprises the following steps: soaking biogas residues in a phosphoric acid solution to obtain pretreated biogas residues; mixing the pretreated biogas residues, transition metal salt, biochar loaded with vitamin B12 and water with the mass being 8-15 times that of the pretreated biogas residues, and performing hydrothermal reaction for 1-4 hours under the conditions that the temperature is 180-250 DEG C and the pressure is 1.5-4 MPa to obtain a hydrothermal product; and activating the hydrothermal product for 1-2 hours under the protective atmosphere of 300-400 DEG C to obtain the modified biogas residue-based hydrothermal carbon. The surface Fe-Cu composite oxide sequentially catalyzes and oxidizes H2S into elemental sulfur and sulfate ions, the vitamin B12-loaded biochar can promote MA directional proliferation, the sulfate ions can competitively inhibit SRB substrate uptake, the quantity ratio of MA to SRB is increased, and the methane production efficiency is effectively improved.

The utility model discloses a slaked lime powder on-line feeding and efficient magnesium removal and desulfurization reaction device which comprises a dissolution reaction tank, a slaked lime feeding assembly, a reaction flocculation tank, an overflow pipe, a liquid level meter and a frequency conversion material transfer pump. A water inlet pipe and a powder feeding opening are formed in the top of the dissolving reaction tank; the slaked lime adding assembly is used for adding slaked lime powder into the dissolving reaction tank; the reaction flocculation tank is communicated with the dissolution reaction tank through an overflow port, a feed liquid discharge port is formed in the bottom, and a flocculant filling port and a coagulant aid filling port are formed in the top; the bottom of the overflow pipe extends below the liquid level of the dissolving reaction tank, the top of the overflow pipe is communicated with the overflow port, and the liquidometer is used for monitoring the liquid level value of the reaction flocculation tank in real time; and the variable-frequency transfer pump is used for performing variable-frequency adjustment according to the liquid level value monitored by the liquid level meter. According to the utility model, the problem that only low-concentration magnesium ions, sulfate ions and desulfurization wastewater of suspended matters can be treated by the existing triple box treatment process is solved, and the automation degree is improved.

The invention provides a novel D-A-D type fluorescent probe material as well as a preparation method and application thereof. The fluorescent probe material has good stability, the preparation process is simple, and the synthesis condition is mild. Moreover, the D-A-D type fluorescent probe material has good solubility and stability, and a complex of the D-A-D type fluorescent probe material and zinc ions can identify pyrophosphate ions with high selectivity and high sensitivity. The interference of phosphate ions, hydrogen phosphate ions, dihydrogen phosphate ions, fluorine ions, chloride ions, nitrate ions, acetate ions, sulfate ions and carbonate ions is avoided; after the zinc ion complex of the D-A-D type fluorescent probe material is combined with PPi, the fluorescence intensity is remarkably enhanced, the D-A-D type fluorescent probe material has a higher signal-to-noise ratio, in-situ imaging detection of a target object in living cells or tissues is realized, the defects of a traditional molecule and ion detection method are overcome, and the D-A-D type fluorescent probe material is suitable for being widely applied to the field of biological imaging. # imgabs0 #

The invention provides a method for recycling battery-grade manganese sulfate from manganese-containing feed liquid. The method comprises the following steps: (1) carrying out resin adsorption on a manganese-containing feed liquid to obtain a nickel-cobalt adsorbate and an adsorbed feed liquid; (2) sequentially carrying out extraction treatment and reverse extraction treatment on the adsorbed feed liquid to obtain a solution containing manganese sulfate and an organic phase after reverse extraction; (3) carrying out evaporative crystallization on the solution containing manganese sulfate to obtain battery-grade manganese sulfate; positive ions in the manganese-containing feed liquid comprise manganese ions, nickel ions, cobalt ions, calcium ions and magnesium ions, and negative ions in the manganese-containing feed liquid comprise sulfate ions; an extraction agent adopted in the extraction treatment process comprises an HBL116 extraction agent. According to the method disclosed by the invention, metal oxidation hydrolysis cannot be caused to generate a third phase, the extraction process is stable, enrichment of a high-concentration manganese sulfate solution is realized, high-purity manganese sulfate crystals with qualified impurities are obtained, and efficient recovery of manganese in a high-calcium-magnesium feed liquid system can be realized; and a complicated recovery process is not needed, so that the cost is lower.

The invention discloses wear-corrosion-resistant high-strength steel for a power transmission tower and a preparation method thereof, and belongs to the technical field of metal materials. The wear-corrosion-resistant high-strength steel for the power transmission tower provided by the invention has good corrosion resistance and wear resistance, has excellent wear resistance in a soil environment of sulfate ions with the concentration of 300 mg / kg-50000 mg / kg and chloride ions with the concentration of 500 mg / kg-10000 mg / kg, and meets various environmental performance requirements of an acid soil environment, an atmospheric corrosion environment and the like. In an acid soil environment, the corrosion resistance is more than 8 times that of plain carbon steel, and the relative corrosion rate is lower than 10%; compared with Q355B, the corrosion rate of atmospheric corrosion resistance is lower than 40%, and the abrasive wear rate is 26.5%-28.0%; and through reasonable matching of corrosion-resistant elements, the requirements of corrosion resistance in various environments are met. The yield strength is 775 MPa-805 MPa, the tensile strength is 952 MPa-985 MPa, the percentage elongation after fracture A50 is larger than or equal to 28%, the low-temperature impact toughness at the temperature of-60 DEG C is larger than or equal to 260 J, meanwhile, the forming performance is excellent, and the 180-degree cold bending requirements that d is equal to 1.0 a are met.

The invention provides a BDO (1, 4-butanediol) wastewater treatment process with high sulfate content, which comprises the following steps: carrying out electrochemical oxidation treatment on BDO (1, 4-butanediol) wastewater with high sulfate content; introducing the obtained BDO wastewater into an anaerobic reaction device for anaerobic reaction to reduce sulfate ions into hydrogen sulfide and oxidize organic matters to reduce COD (Chemical Oxygen Demand); effluent sequentially flows back to the circulating desulfurization device and the air floatation device; carrying out aeration treatment in the circulating desulfurization device so as to oxidize hydrogen sulfide into elemental sulfur; elemental sulfur is recycled in the air flotation device, and part of effluent of the air flotation device and part of effluent of the anaerobic reaction device flow back to inlet water of the anaerobic reaction device; part of effluent of the air floatation device and part of effluent of the anaerobic reaction device are combined and then are sequentially introduced into an aerobic activated sludge tank with a membrane bioreactor and an ozone catalytic oxidation tank. Effluent can enter a subsequent ultrafiltration reverse osmosis membrane system to be purified, and water produced by the membrane system is recycled as reclaimed water.

The invention relates to the technical field of all-vanadium redox flow batteries, and discloses a supported electrolyte of all-vanadium redox flow battery positive and negative electrolyte and a preparation method thereof, and the supported electrolyte comprises an aqueous solution containing vanadium ions, sulfonate ions, sulfate ions and phosphonic acid groups. The sulfonic acid group (-SO3H) has strong polarity and high ionization degree, after the sulfonic acid group (-SO3H) is mixed with the phosphonic acid group (-PO3H2) and sulfuric acid, the ionic environment of the electrolyte can be optimized, the activation energy of V (II) / V (III) and V (IV) / V (V) electricity on electron transfer is reduced, and compared with an existing sulfuric acid supported electrolyte, the reversibility of electrochemical reaction is remarkably improved, and the electrochemical activity of the electrolyte is enhanced; meanwhile, phosphonic acid groups have high complexing ability, can form stable chelates with vanadium ions and can form complexing-dispersing synergy with sulfonic acid groups, the solubility of the vanadium ions is improved, and agglomeration and crystallization of the vanadium ions are inhibited.

The invention provides a process for recovering sodium sulfate, sodium carbonate and glaserite in alkali ash and removing chloride ions. The process specifically comprises the following steps: dissolving the alkali ash; sodium sulfate and sodium carbonate in the alkali ash solution are separated through hot crystallization; cooling, crystallizing and separating glaserite in the alkali ash solution; sulfate ions and carbonate ions in the alkali ash solution are separated from chloride ions; and further separating sodium sulfate, sodium carbonate, glauberite and the like in the alkali ash solution. Meanwhile, the invention provides a system for implementing the process. The system comprises an alkali ash dissolving unit, a main crystallization unit, a glaserite crystallization unit, a nanofiltration unit and other elements. According to the process and the system provided by the invention, on one hand, sodium sulfate and sodium carbonate in the alkali ash solution can be extracted, glaserite can be extracted at the same time, chloride ions in the solution are removed at the same time, and the discharge amount of mother liquor is reduced.

The invention relates to the technical field of natural polymer material processing, in particular to a high-strength cellulose membrane and a preparation method thereof.The preparation method comprises the following steps that a solvent is prepared from an alkaline aqueous solution and a stabilizer to dissolve cellulose, and a cellulose solution is obtained after filtering and defoaming; the cellulose solution is regenerated in a salting-out bath after being extruded through a slit, and a carbonate solution or a mixed salt solution of carbonate and sulfate is selected as the salting-out bath; and washing, drafting and drying the regenerated product to obtain the high-strength cellulose membrane. Carbonate and sulfate ions in the salting-out bath can polarize hydrated water molecules around cellulose molecular chains, destroy hydrogen bond interaction between the cellulose molecular chains and water and water molecules and interfere hydrophobic interaction of the cellulose molecular chains, so that the water molecules are discharged from the cellulose molecular chains; the interaction among hydroxyl groups on a cellulose skeleton is enhanced, compact and uniform nanofibers are formed, and the mechanical property of the film is remarkably improved.

The present application discloses a method and device for determining the reaction intensity of TSR in a reservoir, which belongs to the technical field of oil and gas reservoirs. The method comprises: obtaining sulfate ions SO4 in the formation water of the target reservoir; 2‑ The concentration of chloride ions Cl ‑ Calculate the concentration of SO4 in the formation water of the target reservoir 2‑ The concentration value and Cl ‑ The ratio of the concentration values ​​of SO4 in the formation water of the target reservoir; 2‑ The concentration value and Cl ‑ The reaction intensity of the thermochemical sulfate reduction reaction TSR in the target reservoir is determined by the ratio of the concentration values ​​of . The present application can more accurately determine the reaction intensity of the TSR in the reservoir.

The invention relates to the technical field of scale inhibitors, in particular to a scale inhibitor, a preparation method and application. The scale inhibitor is prepared from the following raw materials in parts by weight: 30 to 35 parts of acrylic acid-2-acrylamide-2-methylpropanesulfonic acid copolymer, 6 to 10 parts of polyepoxysuccinic acid, 5 to 8 parts of polyethylene oxide fatty alcohol ether, 5 to 8 parts of sodium dodecyl benzene sulfonate, 4 to 6 parts of nano zinc oxide, 6 to 9 parts of metakaolin hybridization regulated filling agent, 5 to 7 parts of modified nano titanium dioxide agent, 4 to 6 parts of silane coupling agent KH560 and 30 to 35 parts of deionized water. According to the scale inhibitor, raw materials are blended, the scale inhibition effect of calcium carbonate and calcium sulfate ions of a product system is enhanced, the corrosion rate and the antibacterial effect of a product are optimized, the performance coordination balance of the product is excellent, and meanwhile the temperature-resistant stability effect of the product is remarkable.

The invention discloses a negative electrode electrolyte for an all-vanadium redox flow battery and the all-vanadium redox flow battery. The negative electrode electrolyte comprises vanadium ions, sulfate ions, a solvent and an additive, the additive comprises ethylene glycol and amino acid. The invention aims to solve the problem of precipitation of low-valence vanadium ions in the electrolyte, and low-temperature stability of the low-valence vanadium ions can be improved by adding low-concentration ethylene glycol and amino acid into the electrolyte, so that the low-valence vanadium ions can stably exist at a relatively low temperature, thereby improving the low-temperature activity of the negative electrode electrolyte of the all-vanadium redox flow battery and prolonging the service life of the all-vanadium redox flow battery. And the coulombic efficiency, the energy efficiency, the voltage efficiency and the capacity retention ratio of the battery at low temperature can be effectively improved, and high-performance stable operation of the battery at low temperature is realized.

The invention belongs to the technical field of building materials, and particularly relates to early strength type quick-setting concrete based on a composite cement system and a preparation method thereof, the early strength type quick-setting concrete comprises 400 parts of water, 400-460 parts of cement, 700-780 parts of sand, 980-1150 parts of gravel, 25-30 parts of cellulose, 18-26 parts of polyvinyl alcohol and 30-35 parts of an accelerator; aluminum ions and sulfate ions are subjected to a polymerization reaction to form a polymer with a specific structure, and an organic high-molecular polymer is added, so that the organic high-molecular polymer interacts with an aluminum sulfate polymerization product, and the performance of the accelerator is further modified.

The present application relates to the technical field of manganese industry wastewater treatment device, and particularly discloses a comprehensive treatment method for electrolytic manganese production wastewater containing medium and high concentration ammonia nitrogen, which comprises the steps of removing manganese, solid-liquid separation of manganese removal wastewater, adding a precipitant for precipitation reaction, etc.; according to the characteristics of electrolytic manganese production wastewater containing manganese, ammonia nitrogen, calcium, magnesium, sulfate ions, etc., by fully utilizing the magnesium ions in water, more than 95% of the manganese ions and all the phosphate radicals in water can be selectively removed by using slurry of quicklime, without introducing excessive calcium ions, effectively reducing the dosage of magnesium salt and phosphoric acid reagent, reducing the treatment cost, so that the electrolytic manganese production wastewater containing medium and high concentration ammonia nitrogen with ammonia nitrogen > 50 mg / L can be completely treated to reach the standard by using the ammonium magnesium phosphate precipitation method, and the indexes of manganese, ammonia nitrogen, phosphate radical and pH value after treatment can all reach the first standard limit value requirement of the Comprehensive Sewage Discharge Standard (GB 8978-1996), and the manganese, ammonia nitrogen and magnesium resources in the wastewater can be recovered.

The present application relates to the technical field of health, environmental management and resource development, and discloses an alkaline-sulfur oxidizing bacteria and its application in water pollution treatment and bioleaching. The alkaline-sulfur oxidizing bacteria is named 381-2, which has been preserved in the China General Microbiological Culture Collection Center on December 23, 2024, and the preservation number is CGMCC No. 33017; the microbial classification name is Stutzerimonas sp. The present application isolates a new species of Stizolobium strain from a deep-sea hydrothermal area Stutzerimonas sp. . The strain has strong and rapid oxidation ability of thiosulfate ions, and also has the characteristics of producing alkali, so it can be applied to the fields of water pollution treatment and bioleaching.

Methods for photocatalytic water splitting of produced waters may comprise introducing a photocatalyst comprising a semiconductor to a produced water comprising ions of sodium, chloride, calcium, magnesium, potassium, sulfate, barium, iron, lithium, strontium, or any combination thereof; in the presence of sunlight, allowing the photocatalyst to facilitate a reduction-oxidation reaction of a plurality of water molecules from the produced water; and obtaining hydrogen and oxygen.

The invention relates to ultra-high performance concrete for resource utilization of pyrite tailings and a preparation method thereof, and the method comprises the following steps: carrying out a series of treatment processes such as drying desulfurization, alkaline etching and calcium salt complexation on pyrite tailings, mechanically sieving, screening the pyrite tailings after desulfurization according to a range of 25-85 meshes, and preparing the ultra-high performance concrete for resource utilization of pyrite tailings. And finally, mixing according to a set ratio, so as to obtain the ultra-high performance concrete. By combining a series of treatment processes such as drying desulfurization, alkaline etching and calcium salt complexation, free sulfate ions in the pyrite tailings are effectively eliminated, sulfides such as SO2 and SO3 are neutralized, then the physical and chemical compatibility of the pyrite tailings in the alkaline UHPC product is improved, it is ensured that doping of the pyrite tailings does not bring negative influence on the UHPC product, and the UHPC product quality is improved. Therefore, the UHPC product which is excellent in performance, low in carbon and environmentally friendly can be prepared, and the problem of resource utilization of building material products of pyrite tailings can be solved.

The invention provides biomass-sourced succinic acid as well as a preparation method and application thereof. The biomass-sourced succinic acid comprises succinic acid, iron ions, chloride ions, sulfate ions and phosphate ions. The mass content of iron ions in the succinic acid derived from the biomass is 0.01-5 ppm, the mass content of chloride ions in the succinic acid derived from the biomass is 0.1-15 ppm, and the mass content of sulfate ions in the succinic acid derived from the biomass is 0.1-100 ppm; the mass content of the phosphate ions is 0.1 to 200 ppm. The biomass-derived succinic acid provided by the invention contains inorganic ions with a specific content, the succinic acid is high in purity and low in inorganic salt content, and the inorganic salt content is obviously lower than the index requirement of GB / T34686-2017 on superior succinic acid. The biomass-derived succinic acid is used for preparing the PBS resin, so that the PBS resin has higher mechanical properties and aging resistance.

The application provides a method for separating magnesium and lithium in brine, comprising the following steps: pretreating the brine to obtain pretreated brine; performing primary nanofiltration, secondary nanofiltration and reverse osmosis concentration on the pretreated brine; the nanofiltration membrane selected for the primary nanofiltration is a carboxylated MOF modified nanofiltration membrane; and the raw materials for preparing the carboxylated modified nanofiltration membrane comprise a support, piperazine, carboxylated ZiF-8 and carboxylated Uio-66. The application reduces the risk of nanofiltration membrane pollution by pretreating the brine, pumps the pretreated brine into a nanofiltration system, generates a cut-off liquid rich in magnesium and sulfate ions and a high-lithium permeate liquid, performs secondary nanofiltration on the cut-off liquid to recover lithium, the secondary cut-off liquid can be used as a resource, the permeate liquid enters a reverse osmosis membrane, the lithium content is concentrated, the concentrated lithium liquid enters a lithium precipitation process, and the method for separating magnesium and lithium in the nanofiltration process realizes the impurity removal process for lithium recovery.

The invention belongs to the technical field of sewage treatment, and particularly relates to a sulfur conversion driven chlorohydrocarbon polluted underground water treatment method. According to the method, the multifunctional biochar is prepared through high-temperature ammonia gas modification, PS can be activated to oxidize and remove chlorinated hydrocarbon, then sulfide reduction is catalyzed to remove residual chlorinated hydrocarbon, a porous structure of BC provides pollutant adsorption and fixation functions, and after MFBC, PS and sulfate reducing bacteria are sequentially added into a chlorinated hydrocarbon pollution medium, the pollution medium is subjected to high-temperature ammonia gas modification to remove the residual chlorinated hydrocarbon. The sulfur-containing species undergo a cyclic conversion process from PS-sulfate ion-sulfide-elemental sulfur-sulfate ion. In the conversion process, various oxidation and reduction active substances can be used for effective detoxification of chlorinated hydrocarbon, and MFBC and sulfate reducing bacteria play a key role in mediating sulfide conversion. According to the method, the chlorohydrocarbon in the high-permeability medium can be rapidly removed firstly, and then the chlorohydrocarbon slowly released by the low-permeability medium can be slowly removed at low cost. And the method is low-carbon and environment-friendly, has no secondary pollution such as heavy metals and has obvious application advantages.

The invention relates to the field of combined application of MOF (Metal Organic Framework) crystal material synthesis and a sonodynamic antibacterial technology, in particular to an Eu-TCPP-SO4 crystal as well as a preparation method and application thereof. The rare earth-porphyrin complex Eu-TCPP-SO4 crystal with a specific crystal structure is constructed by virtue of coordination and self-assembly of europium nitrate pentahydrate, meso-tetra (4-carboxyl phenyl) porphyrin (TCPP) and sulfate ions. The Eu-TCPP-SO4 crystal disclosed by the invention as a sound-sensitive agent has high sound-sensitive activity and good stability, overcomes the limitations of low efficiency and poor stability of the sound-sensitive agent in the prior art, and can provide a safer and more effective solution for actual antibacterial application.

The invention discloses a neutralization device for sulfur-containing waste liquid treatment, which comprises a box body for sulfur-containing waste liquid neutralization treatment, and a stirring shaft for waste liquid neutralization is arranged in the box body; the industrial wastewater treatment device comprises a box body, a material filtering mechanism, the material filtering mechanism is arranged in the box body, the material filtering mechanism comprises a fixing rod, the outer surface of the fixing rod is fixedly connected with the interior of the box body, the outer surface of the fixing rod is rotatably connected with a material disc in a penetrating mode, and a body of the material disc is fixedly connected with a material barrel in a penetrating mode. The problems that when an existing industrial waste liquid neutralizing device is used, due to the fact that sulfate ions and lime are neutralized to generate calcium sulfate precipitates, the calcium sulfate precipitates need to be removed through existing filtering equipment after being neutralized, the actual treatment time is long, the cost is increased, and when the precipitates are large in amount, a discharging pipeline is easily blocked, and the precipitates are easily accumulated in the equipment; the interior of the equipment needs to be washed, so that the actual operation wastes time and labor, and the cost is increased.

The invention belongs to the technical field of sewage treatment, and provides a filter material, a filter unit and a filter system.According to the filter material, the filter unit and the filter system for manganese ion-containing sewage treatment, a filter plate is provided with water through holes in the filter direction so that manganese-containing sewage can smoothly pass through the filter plate, and the filter plate is provided with water through holes in the filter direction; meanwhile, sufficient contact of sewage and filter plate materials is guaranteed, the forming direction of the water through holes is consistent with the sewage flowing direction, and sewage flowing resistance can be reduced. Through the synergistic effect of the porous structure of the adsorption foam concrete and various adsorption materials, synchronous and efficient removal of manganese ions and sulfate ions is realized, and the limitation of single pollutant treatment in the prior art is solved; due to the loose porous structure and reasonable raw material ratio, the adsorption efficiency is ensured, and the problem of secondary pollution caused by a chemical precipitation method is avoided; the material of the filter plate has adsorbability and structural strength, and is suitable for complex terrains and working conditions of multi-mountain mineral areas.

The invention provides a method for separating calcium and sulfur in industrial byproduct gypsum. The method comprises the following steps: mixing and stirring industrial byproduct gypsum and a cosolvent solution to react, and filtering after reacting for a period of time to obtain a first filtrate and a first filter residue; adding alkali metal hydroxide into the first filtrate to form calcium hydroxide slurry, and introducing carbon dioxide to precipitate calcium ions in the first filtrate to obtain a product calcium carbonate and second filtrate; adding calcium chloride into the second filtrate, reacting sulfate ions in the second filtrate with the added calcium chloride at a certain temperature, and filtering to obtain calcium sulfate and a third filtrate mainly containing potassium chloride; alkali metal chlorine salt is used as a cosolvent, the solubility of calcium sulfate in a liquid phase is improved, and then separation of calcium sulfate and impurities in the byproduct gypsum is achieved through solid-liquid separation; compared with an organic solvent as a phase transfer solution, solid-liquid separation with alkali metal chlorine salt as a cosolvent is more convenient and quicker, and the cost is low.

The invention discloses an anti-scouring environment-friendly sludge soil curing agent as well as a use method and application of the anti-scouring environment-friendly sludge soil curing agent. The anti-scouring environment-friendly sludge soil curing agent comprises a first component and a second component, and the ratio of the first component to the second component is 1: 1; the first component comprises ammonium dihydrogen phosphate, fly ash and anhydrous borax, and the ratio of the ammonium dihydrogen phosphate to the fly ash to the anhydrous borax is 1.0: 2.0: 0.25; the second component comprises dead burned magnesium oxide, slag powder and a composite water reducing agent, and the ratio of the dead burned magnesium oxide to the slag powder to the composite water reducing agent is 1.0: 0.25: 0.002. The curing agent provided by the invention has good physical and mechanical properties and environmental adaptability, and also has the characteristic of rapid curing. And moreover, the corrosion resistance to chloride ions and sulfate ions is achieved, heavy metal ions and radioactive ions in the surrounding environment can be consolidated, and therefore extremely high application value and practical significance are shown in reinforcement treatment of polluted offshore silt soil and coastal salinized soil.