14results about How to "Resolve disposal issues" patented technology

The invention discloses a pebble coal waste heat utilization system and method of a coal-fired unit coupled heat insulation furnace, and belongs to the technical field of energy utilization and energy conservation. Comprising a heat insulation furnace body, a pebble coal crushing unit, an air supply unit, a diesel oil ignition unit, an ash blowing unit, a high-temperature flue gas mixing unit and an ash slag unit, wherein the pebble coal crushing unit, the air supply unit and the diesel oil ignition unit are connected with the feeding end of the heat insulation furnace body; the ash blowing unit and the high-temperature flue gas mixing unit are connected with the flue gas outlet end of the heat insulation furnace body; and the compressed air unit is respectively connected with the heat insulation furnace body, the soot blowing unit and the air supply unit. Based on the stable combustion characteristic of an adiabatic furnace, pebble coal is crushed and then combusted through the adiabatic furnace, after combustion, the pebble coal is mixed with a hot secondary air system of a pulverized coal furnace through hot flue gas, meanwhile, an effective pebble coal treatment mode and hot secondary air temperature rising are provided, solid waste treatment of a unit is achieved, and the flexibility of the unit is improved.

The invention provides pervious concrete prepared from modified recycled aggregate and a nano-reinforced material, and relates to the technical field of building materials, the pervious concrete comprises recycled aggregate, a nano-reinforced material, a cement matrix, a water reducing agent, a surfactant and water, the recycled aggregate comprises waste concrete, tile waste, ceramic fragments and glass waste, and the nano-reinforced material comprises a water reducing agent, a surfactant and water. The modified recycled aggregate and the nanometer reinforcing material are adopted, particularly, after the surface of the recycled aggregate is subjected to acid etching and plasma treatment, the surface of the recycled aggregate is subjected to acid etching and plasma treatment, and the surface of the nanometer reinforcing material is subjected to acid etching and plasma treatment, so that the surface of the recycled aggregate is subjected to acid etching and plasma treatment, and the surface of the recycled aggregate is subjected to acid etching and plasma treatment; the bonding performance with a cement matrix is enhanced, and the mechanical property of the pervious concrete is remarkably improved. The modification treatment ensures that the pervious concrete can meet higher performance requirements in high-strength application scenes (such as heavy traffic roads).

This invention discloses a ceramic filter media based on Yellow River sediment. By mass percentage, the ceramic filter media comprises the following components: 66-82 wt% Yellow River sediment, 9-15 wt% high-alumina bauxite, 3-7 wt% iron oxide, and 6-12 wt% sodium-based bentonite; the mass ratio of SiO2, Al2O3, and Fe2O3 in the above system is 40-58:8-20:5-12. This application provides a high-value-added utilization method for Yellow River sediment, realizing the resource utilization of Yellow River sediment and solving the problem of Yellow River sediment disposal. The ceramic filter media prepared in this application has wide applications, including in wastewater treatment processes such as aerated biological filters and constructed wetlands. By utilizing solid waste to treat water pollution, it achieves "treating pollution with waste."

The invention discloses a method for improving the wear resistance of a porcelain glazed brick by using artificial gemstone solid waste, and relates to the technical field of ceramic tile preparation. The invention relates to a method for improving the wear resistance of a porcelain glazed brick. The porcelain glazed brick is prepared from a glazed material containing artificial gem solid waste. The polishing glaze comprises the following raw materials in parts by weight: a parts of potassium feldspar (40 < = a < = 46), b parts of dolomite (10 < = b < = 13), c parts of washed soil (8 < = c < = 12), 8-10 parts of strontium carbonate, d parts of quartz (6 < = d < = 9), e parts of calcined talc (8 < = e < = 10), f parts of zinc oxide (4 < = f < = 6), g parts of aluminum oxide (1 < = g < = 3), 1-3 parts of wollastonite and h parts of artificial gemstone solid waste (2 < = h < = 5), and a + b + c + d + e + f + g = 89. According to the invention, the artificial gem solid waste is introduced into the formula of the polishing glaze, so that the pollution of the solid waste in the artificial gem industry can be reduced, the material cost of the polishing glaze is reduced, the wear resistance of the glazed brick can be improved, and a green and sustainable ecology is constructed.

The utility model relates to the technical field of wastewater treatment, in particular to a recycling defluorination crystallization device, which comprises a reaction tank body, a water outlet area, a settling area, a water inlet area, a mixing area, a stirring component, a first-stage reaction area and a second-stage reaction area. The method is suitable for all medium-high-concentration fluorine-containing wastewater, the effluent quality is excellent, the fluoride concentration can be lower than 1mg / L at the minimum, fluorine resources of incoming water can be fully utilized, waste is turned into wealth, fluorine-containing sludge is not generated, economic benefits can be generated, and the problems that a traditional fluorine removal process is large in agent dosage, large in sludge yield, and whether the sludge is hazardous waste or not needs to be identified are solved; and the process has the advantages of small agent dosage, high facility integration level, small occupied area, reduction of the operation cost of a sewage plant and simplicity in operation and maintenance, not only solves the problem of fluorine pollution of the fluorine-containing wastewater, but also can solve the problem of fluorinated sludge treatment, and has certain popularization value.

The invention discloses a method for curing waste soil by using a geopolymer prepared from waste glass, which comprises the following steps: carrying out thermochemical treatment on the waste glass by using alkali to prepare sodium silicate powder; uniformly mixing the prepared sodium silicate powder with industrial wastes rich in active silicon dioxide and aluminum oxide in proportion to obtain a waste glass derived geopolymer; the waste soil and the waste glass derived geopolymer are uniformly mixed in proportion, the mixture is put into a mold and compacted, and curing is performed after demolding to obtain the waste glass derived geopolymer solidified soil. According to the method, the sodium silicate powder prepared from the waste glass is mixed with the industrial waste to generate the waste glass derived geopolymer, the waste soil is solidified, and the conversion efficiency of the waste glass is improved, so that on one hand, the treatment problem of the waste glass and the waste soil is solved, the resource utilization way of the waste glass is widened, and the utilization rate of the waste glass is improved;

The present invention relates to the technical field of river and lake sludge treatment, and provides an environmentally friendly microporous sound-absorbing ceramic prepared by using river and lake bottom mud and a preparation method thereof. The process includes mixing river and lake bottom mud, fly ash, diatomaceous earth, expansion agent, dispersant, and gelling agent, adding water to form an initial slurry; ball milling the initial slurry to obtain a premixed liquid; adding a foaming agent to the premixed liquid, stirring once, then adding a foam stabilizer, stirring twice, to obtain a ceramic slurry; injecting the ceramic slurry into a mold, covering the surface of the ceramic slurry in the mold with a non-woven fabric, and standing to form a mold; then removing the non-woven fabric, demolding to obtain a green body; drying and sintering the green body to obtain an environmentally friendly microporous sound-absorbing ceramic. The present invention can avoid the occurrence of green body cracking through process improvements in injection molding and other links, greatly improve the yield rate of material preparation, and improve the production efficiency of sound-absorbing ceramics, and is suitable for the preparation of large-scale porous sound-absorbing ceramics.

The invention discloses a preparation method and application of banana peel-based potassium-rich biochar and hydrogen-rich gas, the preparation method comprises the following steps: mixing banana peel and water according to a mass ratio of 4: 1-1: 4, carrying out in-situ gasification on the obtained mixed raw material at a high temperature of 800-900 DEG C to prepare the potassium-rich biochar, and obtaining a large amount of hydrogen-rich gas in the reaction process. The preparation method is simple, the potassium content in the biochar is greatly increased, the thought of biochar organic fertilizer utilization and banana peel utilization is expected to be developed, and waste resource utilization and agricultural sustainable development are achieved.

The invention discloses a carbon black modified and coordinated fly ash treatment method, comprising: providing a carbon black modification system consisting of a carbon black pickling unit, a carbon black water washing unit, and a carbon black filter cake drying and granulation unit, a fly ash treatment system consisting of a fly ash washing and decalcification unit and a fly ash water washing unit, a water treatment system, and a garbage incinerator or a cement kiln; the invention achieves a significant reduction in the consumption of sodium carbonate in the fly ash washing process, resource utilization of baking soda desulfurization ash, improvement of the quality of waste tire pyrolysis carbon black, and harmless treatment of carbon black pickling waste liquid by adjusting the operating conditions of each unit of the fly ash treatment system and combining the carbon black modification system.

This invention provides a method and system for reducing the color of coking wastewater concentrate, belonging to the field of wastewater treatment. It aims to solve the problems of incomplete decolorization and easy color reversion that exist when using advanced oxidation methods to decolorize coking wastewater concentrate. The method includes: Step 1, adding persulfate to the wastewater to carry out a first-step reaction, obtaining a primary treated liquid; Step 2, transferring the primary treated liquid to an irradiation device for irradiation treatment, obtaining a secondary treated liquid; Step 3, collecting the ozone generated in the irradiation device and the secondary treated liquid respectively, and introducing the ozone into the secondary treated liquid, and adding ferrous salt, to carry out a final reaction, so that the color of the wastewater is reduced to less than 10 times.

The application discloses a kind of resource processing technology of nickel-containing etching waste liquid, comprising the following steps: S1, pretreatment: adding lye to nickel-containing etching waste liquid to adjust pH to 3.5~4.0, then heated stirring treatment, again, standing aging treatment, obtain containing nickel fluoride turbidity liquid;S2, centrifugal: the centrifugal treatment of containing nickel fluoride turbidity liquid;S3, main reaction: with hot water to clean nickel fluoride by-product, cleaning wastewater is added to the etching waste liquid after pretreatment, then add hydrofluoric acid to adjust the ratio of ammonium fluoride and hydrofluoric acid to 0.9~1.2:1, after reaction, obtain reaction liquid;S4, concentration;S6, centrifugal;S7, drying: ammonium bifluoride crystal is dried to obtain ammonium bifluoride product.The application controls precipitated nickel fluoride by adjusting process conditions, solves the influence of nickel-ammonium complexation on the direction of treating nickel-containing etching waste liquid by precipitation method by pH control, reduces auxiliary material addition and environmental pollution, realizes resource recycling, and reduces production cost.

The invention provides a safe utilization method of a severely cadmium-polluted rice field, and relates to the technical field of rice cultivation in cadmium-polluted rice fields. The method comprises the following steps: measuring and selecting a field with the thickness of a ploughable soil layer being not less than 70cm; performing transformation, exchange, isolation and backfilling on 0-30cm surface soil and 30-60cm deep soil of the selected field, and curing the backfilled deep soil; then green manure is planted, and the green manure is subjected to rotary tillage and smashing in the vigorous growth period and evenly mixed with deep soil; planting a low-cadmium-accumulation rice variety on the treated soil, and respectively spraying a leaf surface blocking and controlling agent in the tillering stage and booting stage of rice growth, so as to safely produce and obtain the rice with cadmium reaching the standard. According to the method, on the premise that the cost is low, the soil layer exchange, isolation, fertile surface layer construction and other technologies are adopted, the cadmium content of the heavily-polluted rice field soil is greatly reduced, the remediation period is short, and the remediation effect is stable; meanwhile, by matching with an improved rice planting technology, the cadmium of the rice produced in the rice field with severe cadmium pollution can reach the standard.

The invention discloses a soil remediation agent as well as a preparation method and application thereof, and relates to the technical field of soil remediation. The preparation method of the soil remediation agent comprises the following steps: mixing papermaking black liquid with an alkaline solution containing calcium ions to obtain a mixed solution, filtering the mixed solution to obtain filter residues, and carbonizing to obtain the soil remediation agent. According to the preparation method of the soil remediation agent provided by the technical scheme of the invention, the black liquor waste is taken as a raw material, the soil remediation agent with a porous structure is prepared through a pyrolysis carbonization process, and the prepared soil remediation agent not only can improve the pH of acid soil and remarkably reduce the leaching concentration of heavy metal cadmium, but also can provide necessary nutritional ingredients for crops. The preparation method of the soil remediation agent provided by the technical scheme of the invention realizes efficient recycling of the papermaking black liquid, and can be used for solving the problems of high cost and poor cadmium pollution treatment effect of the soil remediation agent.

The invention discloses high-performance microcrystalline glass based on multi-source solid waste and a preparation method thereof.The preparation method comprises the following steps that S1, oil-based rock debris deoiling residues and phosphorus slag are obtained, and the oil-based rock debris deoiling residues and the phosphorus slag are crushed, dried, ball-milled and sieved respectively to obtain residue powder and phosphorus slag powder; s2, component detection is conducted on the phosphorus slag powder, and the content of MgO in the phosphorus slag powder is determined; uniformly mixing the residue powder, the phosphorus slag powder and fly ash according to a detection result, and melting to obtain basic glass liquid; s3, performing water quenching on the basic glass liquid to obtain basic glass, and performing drying, ball milling and sieving on the basic glass to obtain basic glass powder; and S4, preparing the basic glass powder into a glass ceramic original sample, sintering the glass ceramic original sample, and naturally cooling to obtain the high-performance glass ceramic. According to the method, the high-performance glass ceramics can be prepared by cooperating with two solid wastes, namely the oil-based rock debris deoiling residues and the phosphorus slag, and synergistic high-value utilization of the multi-source solid wastes is realized.