129 results about "Polyferric sulfate" patented technology

The invention discloses a biomass-inorganic-organic ternary composite flocculant and a preparation method and application thereof, and belongs to the field of coking wastewater treatment.The preparation method comprises the steps that chitosan serves as a substrate material, glutaraldehyde serves as a cross-linking agent, and polyferric sulfate (PFS) and chitosan are subjected to chemical cross-linking to generate an intermediate product PFS and chitosan composite particles; then potassium persulfate is used as an initiator, graft copolymerization of acrylamide and methacryloyloxyethyl trimethyl ammonium chloride is initiated through hydroxyl on the surface of PFS-chitosan, a cationic branched chain is introduced, and a final product is obtained. Through multi-component cooperation and structural design, the defects that a traditional flocculating agent is not thorough in demulsification, large in sludge amount, unstable in floc combination and the like in coking wastewater treatment are overcome, and the flocculating agent is particularly suitable for treating oil pollutants in coking wastewater.

The invention discloses an advanced treatment method of tungsten beneficiation wastewater, which is characterized in that a composite flocculant is adopted to flocculate the tungsten beneficiation wastewater, and the composite flocculant is mainly composed of cationic polyacrylamide, a flocculant A and lignocellulose, the flocculant A comprises at least one of polyferric sulfate, polyaluminum chloride, polyaluminum ferric chloride, polyaluminum ferric sulfate, ferric sulfate, ferrous sulfate and aluminum chloride. According to the advanced treatment method for the tungsten beneficiation wastewater, under the action of the composite flocculant, the cost of a treatment agent can be reduced to about 0.16-0.20 yuan / m < 3 >, the cost reduction amplitude is as high as 80% or above, the treatment time can be shortened to be within 10 min, the precipitation time is greatly shortened, meanwhile, suspended solids in the wastewater can be effectively removed, actual production requirements are met, and the method is suitable for industrial production. The method has the advantages of low treatment cost, high treatment efficiency, good removal effect, good adaptability and the like, can realize advanced treatment of the tungsten beneficiation wastewater, and is high in use value and good in application prospect.

This invention relates to the field of industrial wastewater treatment technology, specifically a highly efficient treatment method for methionine wastewater, comprising the following steps: Step 1: pH adjustment, adjusting the pH of the methionine wastewater to 6.0-7.0; Step 2: Polyferric sulfate coagulation and sedimentation, adding polyferric sulfate and polyacrylamide to the pH-adjusted wastewater; Step 3: Pre-stage ozone oxidation, passing the supernatant obtained in Step 2 through ozone-containing gas for oxidation treatment; Step 4: Biochemical treatment, subjecting the effluent from Step 3 to a biochemical reaction, sequentially passing through anoxic and aerobic stages; Step 5: Post-stage ozone oxidation, passing the biochemical effluent obtained in Step 4 again through ozone-containing gas for deep oxidation treatment; Step 6: Activated carbon adsorption. The methionine wastewater treated by this invention can significantly reduce TOC concentration and improve COD removal rate. The pH pre-adjustment step effectively reduces the quenching effect of alkalinity on hydroxyl radicals, ensuring the efficiency of subsequent advanced oxidation processes.

This invention provides a method for removing impurities and recovering nickel anolyte from electrolytic nickel. The method includes the following steps: (1) mixing the electrolytic nickel anolyte with liquid alkali, separating the solid and liquid components to obtain nickel hydroxide and filtrate, evaporating the filtrate to obtain sodium sulfate; mixing the electrolytic nickel anolyte with a nickel source to obtain a mixed solution; (2) mixing the mixed solution with barium salt for lead removal; (3) adjusting the pH of the material obtained after lead removal with nickel hydroxide to obtain an arsenic removal solution, mixing the arsenic removal solution with polyferric sulfate for arsenic removal; (4) mixing the material obtained after arsenic removal with an oxidant to obtain an iron removal solution, performing solid-liquid separation on the iron removal solution to obtain lead-, arsenic-, and iron-removed cathode liquid and iron-containing slag, adding sodium sulfate to the lead-, arsenic-, and iron-removed cathode liquid, and reusing it in the electrolytic nickel process. The method of this invention can efficiently and quickly remove lead, arsenic, and iron from electrolytic nickel anolyte and reuse it.

The invention discloses a defluorination agent suitable for defluorination of electronic industrial wastewater as well as a preparation method and a defluorination method of the defluorination agent. The defluorination agent comprises 9-10 wt% of aluminum salt, 0.1-0.2 wt% of ferric salt, 0.6-1.1 wt% of an alkaline regulator and the balance of water, the aluminum salt is selected from one or more of polyaluminum chloride and aluminum sulfate, and the ferric salt is selected from one or more of ferric trichloride, ferric sulfate and polyferric sulfate. The fluorine removal agent provided by the invention can realize that the fluorine concentration of discharged water is lower than 1mg / L through one-stage / two-stage fluorine removal under a low-fluorine, medium-fluorine or high-fluorine water inlet condition, the optimal pH condition of reaction is reduced, the acid-base and agent use cost is saved, and meanwhile, the fluorine removal agent is simple in preparation method and can be applied to large-scale popularization and production.

Provided is a novel method for producing an adsorbent comprising an iron compound and having a large adsorption capacity. An adsorbent having a specific surface area of 200 m2 / g or more, a primary particle size of 10 nm or less, an iron content of 450 g / kg or more, and a moisture content of 100 g / kg to 300 g / kg can be obtained by the method for producing an adsorbent, the method including: a first step for adding a polyferric sulfate aqueous solution to an alkali aqueous solution to form a slurry; a second step for adjusting the pH of the slurry to 5.0 to 9.0; and a third step for subjecting the slurry to solid-liquid separation, washing the obtained cake, and adjusting the moisture content of the washed cake.

The invention relates to a production process of polyferric sulfate. The production process comprises the following steps: a raw material treatment step: crushing and screening raw materials; an oxidation reaction step: adding an oxidizing agent into the treated raw materials for stirring reaction; and a polymerization reaction step: adding a polymerizing agent into the oxidized raw material for stirring reaction, removing impurities from the polymerized raw material, and drying to obtain a solid product. The problem that an oxidizing agent and a polymerizing agent react incompletely in an existing scheme is solved.

The invention provides a method for removing and recovering vanadium in alumina seed precipitation mother liquor, which comprises the following steps: mixing the alumina seed precipitation mother liquor, a calcium-containing precipitator and a settling aid, carrying out vanadium precipitation reaction, and carrying out solid-liquid separation to obtain vanadium-containing solid and vanadium-precipitated liquid; wherein the calcium-containing precipitant comprises an activated calcium-based compound; the settling agent comprises polymeric ferric sulfate. The method provided by the invention is high in vanadium removal efficiency, simple in condition and easy to operate, simple in process flow, free from influence on recovery of rare metals, high in high-value resource utilization rate of vanadium and wide in application prospect.

The utility model relates to the technical field of material dissolving, in particular to a dissolving tank for producing polymeric ferric sulfate, which is capable of uniformly mixing materials. According to the technical scheme, the stirring device comprises a bottom plate, a base plate and a tank body, the tank body is arranged on the upper surface of the bottom plate, the base plate is arranged at an opening of the tank body in a lifting mode through a lifting assembly, a first-stage stirring assembly and a second-stage stirring assembly are arranged on the base plate, the first-stage stirring assembly is rotationally connected with the second-stage stirring assembly, and the second-stage stirring assembly is rotationally connected with the first-stage stirring assembly. The first-stage stirring assembly is located at the bottom of the tank body, and the second-stage stirring assembly is located in the middle of the tank body. According to the utility model, materials in different areas in the tank body can be effectively stirred at the same time through the matching of the structures, so that the overall material dissolving efficiency is improved, the working intensity of the motor can be adjusted according to actual requirements, and unnecessary energy consumption waste is avoided.

The present invention discloses a controlled-release type polymeric ferric sulfate water treatment agent and its preparation method, belonging to the technical field of water treatment functional materials. The water treatment agent consists of polymeric ferric sulfate, an iron ion color indicator, a gel matrix, a cross-linking calcium agent, amino diatomaceous earth, a pore-forming agent and an inert filler. The preparation method includes: first preparing a network gel, then preparing soft materials, and finally obtaining the product through pill-making and drying. The present invention realizes the slow release and controllability of polymeric ferric sulfate, and the color indicator can directly reflect the consumption state of polymeric ferric sulfate, facilitating storage, transportation, dosing and recovery.

The invention discloses a liquid polyferric sulfate reducing substance rapid detection reagent and a preparation method thereof, and belongs to the technical field of reducing substance detection.According to the liquid polyferric sulfate reducing substance rapid detection reagent, qualitative judgment on the content of reducing substances can be directly achieved through solution color changes, complex titration operation and professional instrument analysis are not needed, and the detection accuracy is high. And the detection process is obviously simplified. Due to the rapid detection capability, the content of reducing substances in a product in the reaction kettle can be monitored in real time in the production process, the reaction process can be mastered in time, and time delay caused by detection in a sample feeding laboratory is avoided, so that invalid consumption of a catalyst and unnecessary prolonging of reaction time are effectively reduced, and the overall production efficiency is improved. Meanwhile, the qualitative judgment result of the reagent can directly correspond to the limit value requirement specified by the national standard, the requirement for rapidly screening the product quality in the production process is met, and convenient technical support is provided for ensuring that the final product meets the standard.

The utility model relates to a polymeric ferric sulfate liquid oxygen adding device, which belongs to the technical field of material adding and comprises a reaction kettle body, a stirring shaft and a stirring motor, a stirring impeller is fixed on the stirring shaft, a distribution stirring rod is fixed on the outer wall of the lower portion of the stirring shaft, and a connecting rod is fixed on the inner side of the upper portion of the distribution stirring rod and fixed with the stirring shaft. A flow channel is arranged at the lower part of the stirring shaft, a cavity communicated with the flow channel is arranged in the distribution stirring rod, a plurality of distribution holes communicated with the cavity are formed in the outer side wall of the distribution stirring rod, a rotary joint is fixed at the bottom of the stirring shaft, the rotary joint is connected with a liquid oxygen adding pipe, and an electric valve is arranged on the liquid oxygen adding pipe. The distribution stirring rods are arranged on the lower portion of the stirring shaft, the distribution holes are evenly formed in the distribution stirring rods, liquid oxygen is added through the rotating connector and the liquid oxygen adding pipe, then the liquid oxygen is sprayed out of the distribution holes in a rotating mode, the liquid oxygen is added and mixed more evenly, and follow-up catalytic reaction is better facilitated.

The invention belongs to the technical field of titanium dioxide production waste resource utilization and inorganic polymeric flocculant preparation, and discloses a closed-loop process for preparing artificial rutile and co-producing polymeric ferric sulfate by using titanium dioxide primary washing waste acid. The method solves the problems of low resource utilization rate of titanium dioxide primary washing waste acid, high acid consumption in preparation of artificial rutile and high production cost of polyferric sulfate in the prior art. Comprising the following steps: pretreatment of titanium dioxide primary washing waste acid, reduction pretreatment of ilmenite, preparation of artificial rutile by leaching refined waste acid and reduced ilmenite, recovery of high-iron-content mother liquor, preparation of polyferric sulfate by oxidation-polymerization of the mother liquor, and cyclic utilization of washing water. The grade of the prepared artificial rutile TiO2 is greater than or equal to 92%, and the polyferric sulfate meets the national standard requirement; the waste acid resource utilization rate is larger than or equal to 98%, the comprehensive cost of the two products is reduced by 25-30%, and the method is suitable for waste resource utilization and fine chemical product collaborative production of sulfuric acid method titanium dioxide enterprises.

The invention relates to the technical field of solid waste treatment and resource utilization, in particular to an environment-friendly curing agent, sludge solidified soil and a preparation method of the sludge solidified soil. The environment-friendly curing agent is prepared from the following components: desulfurized fly ash, mineral powder, cement, sodium hypochlorite and polyferric sulfate. The sludge solidified soil is prepared from the following components: sludge, an environment-friendly curing agent and water. The environment-friendly curing agent prepared by adopting the technical scheme is used for curing water-containing sludge, the 28-day strength of a cured body of obtained sludge cured soil exceeds 2MPa, and the anti-permeability coefficient can reach 5.2 * 10 <-9 > cm / s. According to the technical scheme, the obtained sludge solidified soil is good in shrinkage resistance and water stability; the setting time is short, the strength development is fast, and the strength period is long; the anti-permeability is high, and the durability is good; according to the technical scheme, the environment-friendly curing agent replaces cement cementing materials to a large extent, and the economical efficiency is good.

The present application relates to the field of water treatment flocculants, and specifically discloses a chitosan-zinc-rare earth ternary functional composite polymeric ferric sulfate and a preparation method thereof, the preparation method comprising: mixing iron-containing raw materials with acid to form an acid-containing reaction solution; adding chitosan, zinc-containing compounds and rare earth-containing compounds to the reaction solution, controlling the chitosan addition amount to be 0.5% to 5% of the mass of the iron-containing raw materials, the Zn / Fe molar ratio to be 0.03 to 0.12, and the rare earth / Fe molar ratio to be 0.005 to 0.05, and allowing the chitosan to coordinate and combine with iron ions in a catalytic oxidation polymerization process to form a ternary functional composite intermediate; and drying to obtain a solid product. The present application embeds chitosan, zinc and rare earth into the molecular structure of polymeric ferric sulfate through synchronous chemical bonding, realizes molecular-level synergistic effect of the three components, significantly improves the flocculation performance, accelerates the flocculation settling, and can utilize titanium white waste acid resources to produce.

The application relates to the technical field of water treatment, and particularly discloses a high-efficiency landfill leachate treatment process. The high-efficiency landfill leachate treatment process comprises the following steps: pretreatment: adding a coagulant A into landfill leachate, then adding a coagulant B, carrying out sedimentation or subsidence treatment, and obtaining pretreated liquid; the coagulant A comprises polyferric sulfate; the coagulant B comprises polyaluminum chloride, cationic polyacrylamide, modified bentonite and activated carbon; A / O treatment: sequentially passing the pretreated liquid through an anoxic tank and an aerobic tank to obtain treatment liquid A; MBR treatment: carrying out MBR treatment on the treatment liquid A by using an MBR (membrane bioreactor), to obtain treatment liquid B; and DTRO treatment: carrying out DTRO treatment on the treatment liquid B, to obtain purified water. The treatment process is convenient, and the treatment effect on the landfill leachate is good.

The application discloses a multifunctional active slow-release water purification material and a preparation method thereof. The multifunctional active slow-release water purification material is prepared from raw materials including the following components in parts by weight: slow-release material 50-100 parts, bentonite 50-150 parts, microbial bacteria powder 10-20 parts, iron powder 15-40 parts, oxygenation agent 10-20 parts, sodium alginate 10-15 parts, calcium nitrate 10-20 parts and polymeric ferric sulfate 10-15 parts. The raw materials have a high synergistic effect on each other, and are indispensable to jointly control the growth of microorganisms and water purification, form a relatively stable micro system, and have a simple and easy preparation process, no toxic and side effects on organisms and environment, and a good application prospect in water pollution remediation engineering.

The present application relates to the technical field of aquaculture, and particularly relates to a denitrification agent for aquaculture and a preparation method thereof, which comprises the following raw materials in 100% by weight: modified polymeric ferric sulfate 24-26%, iron hydroxide 36-38%, polymeric aluminum ferric silicate 1.5-2%, calcium supplement 3-3.5%, and the rest is maifanite powder. The denitrification agent has a good water improvement effect, and can effectively remove pathogenic bacteria in water for a long time.

The invention relates to a method for producing polyferric sulfate by using mine waste liquid, which comprises the following steps: S1, adding a certain amount of iron powder into mine leaching waste liquid, adjusting the pH value to 1-2, and filtering to obtain a stock solution; s2, adding the filtered stock solution into a reaction kettle, starting stirring, raising the temperature to 70-80 DEG C, and performing negative pressure evaporation for volume concentration; s3, stopping concentration when the concentration density of the feed liquid reaches 1.45 g / cm < 3 >, closing the negative pressure vacuum device, and adding a certain amount of catalyst; s4, continuously stirring, introducing air as an oxidizing agent, converting into positive pressure operation, controlling the temperature within the range of 40-60 DEG C, and oxidizing the feed liquid; s5, after the oxidation reaches the end point, continuously stirring, maintaining the positive pressure operation, introducing air, raising the temperature to 80-100 DEG C, and polymerizing for a certain time to obtain liquid polymeric ferric sulfate; and S6, carrying out spray drying on the polymerized feed liquid to obtain a solid polymeric ferric sulfate product. According to the invention, the production efficiency is improved, the cost is reduced, the generation of pollutants is reduced, and the cooled and recycled sulfuric acid can be reused in a wet copper smelting system.

This invention discloses a resource-based treatment process for kitchen waste wastewater, belonging to the technical field of kitchen waste resource utilization. The treatment process provided by this invention includes: adding a ferrate composite oxidant to the kitchen waste wastewater for simultaneous alkali adjustment and oxidation; adding bio-iron or chemically produced polyferric sulfate for reaction; and then adding denitrifying bacteria for nitrogen removal. The treatment process provided by this invention has simple operation steps and low treatment costs, representing a resource-based treatment process for kitchen waste that turns waste into treasure. After treatment, the kitchen waste wastewater has a COD ≥ 50000 mg / L, significantly reduced total nitrogen and total phosphorus content, increased content of small-molecule organic matter, and increased biodegradability, meeting the carbon source requirements of wastewater treatment plants and can be used as a carbon source for wastewater treatment plant carbon replenishment.

The present application provides a kind of medicament for treating waste water containing perchlorate, it consists of two parts of targeted removal agent and guide activator, the core component of the targeted removal agent includes dodecyl trimethylammonium chloride, dodecyl dimethyl benzyl ammonium chloride, hexadecyl trimethylammonium chloride, octadecyl trimethylammonium chloride and the like.The guide activator includes one or more of polymeric ferric sulfate, polymeric ferric chloride, polymeric aluminum ferric chloride, polymeric aluminum ferric silicate.The treatment medicament component of the present application is simple, wherein a large number of high perchlorate ion groups contained therein can be fully combined with perchlorate in waste water, and perchlorate is precipitated from water in the form of precipitation, and then separated and removed, with a removal rate of more than 95% in one step.

The invention belongs to the technical field of adsorbent synthesis, and particularly relates to a fluorine-containing sewage treatment high-adsorption preparation and a preparation method of the fluorine-containing sewage treatment high-adsorption preparation. Comprising the following preparation raw materials in parts by mass: 25 parts of building waste, 3-5 parts of waste wood, 1-2 parts of an MOF substrate, 0.5 part of PVP, 0.5-1.5 parts of kaolin, 0.3-0.6 part of a silane coupling agent, 1-2 parts of EDTA-2Na, 0.5 part of citric acid, 0.4-0.8 part of hydroxyapatite and 0.8-1.2 parts of polyferric sulfate. According to the fluorine-containing sewage treatment high-adsorption preparation disclosed by the invention, three types of solid wastes, namely building wastes, waste wood and waste plastics, are taken as raw materials to construct a closed loop of'treating wastes with wastes'; the construction waste is calcined to provide a calcium silicate matrix, the waste wood is calcined to form a C-doped compound, and the waste plastic is degraded to generate MOF and is loaded on the MOF, so that the stability of the catalyst is ensured while efficient fluorine removal is realized.

The application discloses a kind of flocculants filtration and residue removal systems, including liquid preparation component, filter component and buffer pool, the liquid preparation component is located above the filter component, the liquid outlet of the liquid preparation component is communicated with the liquid inlet of the filter component;The filter component is located above the buffer pool, the liquid outlet of the filter component is communicated with the inlet of the buffer pool.The remarkable effect of the application is that the residue in the polymeric ferric sulfate flocculation solution stock solution can be filtered and removed online, avoid the residue accumulation to cause flocculant dosing pipeline blockage, ensure the supply of flocculant;At the same time, it is not necessary to arrange artificial residue removal operation, reduce the labor cost, and exclude potential safety risk.

The utility model relates to sewage treatment dosing technical field, and disclose a gravity flow automatic dosing device, include: jar body, top plate, top plate fixed mounting in the top of jar body. The utility model discloses through jar body, drive motor and stirring subassembly etc. Structure mutual cooperation, when using, can utilize drive motor drive stirring subassembly in the driving gear, driven gear, spindle and stirring blade collaborative operation, the polymeric ferric sulfate etc. Pharmaceutical solution in jar body is fully and comprehensively stirred, in this way, effectively solved the problem that the solute precipitated in the jar body bottom because of the slow solution adding speed, long standing time when the pharmaceutical preparation and storage, avoided the precipitation to reduce the solution concentration uniformity, influence pharmaceutical dosing accuracy, and the situation that the precipitation accumulation reduces jar body effective volume, reduces the device operating efficiency, guaranteed the consistency of solution concentration, improved the overall operation efficiency of dosing device.

This invention provides the application of polyferric sulfate in improving plant salt stress resistance and / or improving saline-alkali land, belonging to the field of agricultural technology. The polyferric sulfate application provided by this invention can effectively improve the germination ability of plant seeds under salt stress, effectively enhance the activity of plant antioxidant systems and photosynthetic efficiency, thereby effectively improving the survival rate and growth performance of plants under salt stress. Simultaneously, polyferric sulfate can effectively reduce the EC value of saline-alkali soil, thereby effectively improving the germination rate of plant seeds in saline-alkali land and effectively improving saline-alkali land. This invention is simple to operate, low in cost, and environmentally friendly, suitable for enhancing the salt and alkali tolerance of plants, and has broad application prospects.

The present application belongs to the field of waste gas treatment, and particularly relates to a preparation method of a red mud-based mercury and sulfur removal material. A solution containing red mud, a carbonate, a selenium source, an additive and an auxiliary agent is modified by aging, and then solid-liquid separation is performed to obtain the red mud-based mercury and sulfur removal material. The auxiliary agent includes at least one of ferric chloride, ferrous sulfate and polyferric sulfate. The present application also includes the red mud-based mercury and sulfur removal material prepared by the preparation method and the application of the material in mercury and sulfur removal. The carbonate, the selenium source, the additive and the auxiliary agent are used to modify the red mud innovatively, so that the characteristics of the red mud can be fully utilized, the network structure and the active sites of the adsorption material can be synergistically endowed and optimized, and the exposure characteristics of the active sites can be improved, thereby improving the simultaneous removal effect of the prepared red mud-based material on sulfur dioxide and mercury.

The application provides a utilization method of caustic washing waste liquid of an acid pickling line and a waste liquid treatment device. The utilization method comprises the following steps: performing primary neutralization on acid-containing waste water to obtain primary neutralized waste water; performing secondary neutralization on the primary neutralized waste water, and adding caustic washing waste liquid in the process of the secondary neutralization to obtain secondary neutralized waste water; adding polymeric ferric sulfate and polyacrylamide in the secondary neutralized waste water to perform clarification to obtain clarified waste liquid; and performing pH adjustment and filtration on the clarified waste liquid to obtain water to be concentrated and treated. The caustic washing waste liquid is added into a second neutralization tank, and the OH ‑ There is no significant decrease, and the silicic acid in the caustic washing waste liquid added in the secondary neutralization is in a monomer dispersed state. The silicic acid monomer in the caustic washing waste liquid acts as a coagulant aid and cooperates with the polymeric ferric sulfate and the polyacrylamide to perform clarification. The caustic washing waste liquid has a coagulant aid effect, realizes the effect of treating waste with waste, and makes the waste water treatment efficient, low in cost, and environmentally friendly.

The invention provides a method and system for removing total phosphorus and fluoride in stainless steel wastewater, and the method comprises the following steps: carrying out flocculent precipitation treatment on the stainless steel wastewater by using a composite flocculant to obtain a primary treatment liquid; and conveying the primary treatment liquid to an adsorption tower provided with a modified ternary composite filler for adsorption treatment to obtain a secondary treatment liquid. According to the method and the system for removing total phosphorus and fluoride in the stainless steel wastewater provided by the invention, phosphate, fluoride and heavy metal ions in the stainless steel wastewater can be synchronously adsorbed by utilizing the composite flocculant obtained by compounding the polyaluminum sulfate solution and the polyferric sulfate solution; residual total phosphorus and fluoride can be efficiently removed by utilizing the synergistic effect of activated aluminum oxide, graphene and ferroferric oxide in the modified ternary composite filler through a multi-element synergistic mechanism of adsorption, ion exchange and complex reaction.

The present application belongs to the field of hydrometallurgy or chemical technology, and particularly relates to a method for preparing purified nickel-cobalt solution from nickel-cobalt hydroxide raw material, which comprises steps of leaching, removing iron and aluminum, removing calcium and magnesium, removing silicon and removing copper and zinc. The direct yield of nickel-cobalt-scandium is greatly improved by using reduction leaching instead of direct leaching with sulfuric acid; NH4F is used as a reagent for removing calcium and magnesium, and the removal rate of calcium and magnesium is high, and the reaction time is short; the third filtrate after removing calcium and magnesium is subjected to flocculation and silicon removal, so that the silicon content is reduced, the problem of intermediate phase in the subsequent extraction process is solved, the method of removing silicon by using polyferric sulfate is easy to operate, the index is stable, and the price is low, and no new impurities are brought into the system; zinc is removed by using hydrogen sulfide, so that the depth of Zn removal can reach below 1 mg / L, and because the precipitation is in an acidic condition, the residue contains low nickel. The method adopted in the present application has simple process, is easy to operate, has high separation efficiency, and has excellent index.

The application belongs to the technical field of biomass energy, and particularly relates to a catalyst applied to biomass pyrolysis and a pyrolysis method. The catalyst comprises sodium carbonate and polyferric sulfate. The application uses the compound of sodium carbonate and polyferric sulfate as the catalyst, can reduce the pyrolysis temperature of biomass, improve the pyrolysis rate, and greatly reduce the industrial energy consumption.