46results about How to "Realize resource recovery and reuse" patented technology

The invention discloses a method for removing phthalate ester in a water body by utilizing a solid base catalyst, which belongs to the field of wastewater treatment by resin. The method comprises the following steps of: firstly filtering the water body containing phthalate ester pollutants for removing suspended solids in the water body; then leading the obtained filtrate to pass through an absorption tower which is filled with anion exchange resin containing strong base groups; stopping the absorption when the absorption achieves a leakage point, using mixed solution of sodium hydroxide and sodium chloride for carrying out the desorption, and using sodium hydroxide solution for carrying out the regeneration on the resin after the desorption; and obtaining desorption solution which contains sodium phthalate and can be repeatedly recycled, using hydrochloric acid for neutralizing the desorption solution, and recycling phthalic acid after recrystallization. The method adopts the strong base anion exchange resin as the solid base catalyst, deeply removes the phthalate ester pollutants in the water body by catalytic hydrolysis and acid-base absorption, separates and recycles the phthalic acid while reducing the harm of the phthalate ester pollutants and realizes the recycling and the reutilization of resources, the resin has good regeneration performance and can be used repeatedly.

The invention discloses a harnessing method of naphthol manufacturing waste water and recycling method of naphthol and a-haphthylamine, which comprises the following steps: filtering naphthol manufacturing waste water; removing suspension; making filtrate through adsorption tower with large-hole resin; stopping adsorbing until the adsorption reaches leakage point; adopting carbinol or alcohol water solution as desorption agent to regenerate; obtaining alcoholic solution of naphthol and a-haphthylamine as desorption agent; rectifying the desorbed alcoholic solution; returning remained composition of naphthol and a-haphthylamine in the dehydrating procedure of original manufacturing process. The invention makes naphthol density less than 3mg/L, a-haphthylamine density less than 2mg/L and COD less than 100mg/L, which recycles resource to reduce manufacturing cost obviously.

The invention relates to technology for reclaiming low-concentration formaldehyde from pesticide wastewater through ionic liquid supported liquid membrane pervaporation-distillation coupling technology. The technology comprises the following steps that: (1) a pervaporation device provided with an ionic liquid supported liquid membrane is adopted to perform pre-enrichment of low-concentration formaldehyde-containing pesticide wastewater on a transmission side; and (2) the formaldehyde wastewater subjected to pre-enrichment enters the middle part of a rectification column, a catalytic reaction is performed in a reaction section of the rectification column filled with a solid acid catalyst, the stay time is reasonably controlled in a way of outside pump circulation to allow free formaldehyde obtained by depolymerizing polymeric formaldehyde to enter a rectification section to be concentrated, high-concentration formaldehyde solution is obtained, and wastewater solution from which the formaldehyde is removed is obtained in a stripping section. Because the formaldehyde solution is subjected to pre-enrichment by the pervaporation device provided with the ionic liquid supported liquid membrane and is then separated through rectification, compared with the single rectification, the technology can greatly save energy consumption and reduce the cost. Therefore, the technology is more economic and reasonable.

The invention discloses an acid etching wastewater treatment and recycling system, comprising: an etching station, wherein the etching station is provided with an etching machine cylinder and a wastewater transfer cylinder, and the wastewater transfer cylinder is communicated with the etching machine cylinder; an electrolytic station provided with an electrolytic device that includes an anodic chamber and a cathodic chamber divided by a diaphragm, wherein both the cathodic chamber and the anodic chamber are communicated with the wastewater transfer cylinder; a regeneration station provided with a regenerated liquid collection device and a regenerated sub-liquid blending cylinder communicated with each other, wherein the regenerated liquid collection device is communicated with the anodic chamber, and the regenerated sub-liquid blending cylinder is communicated with the etching machine cylinder. The acid etching wastewater treatment and recycling system can impart higher etching rate inan etching procedure to an etching liquid from regenerated and recycled acid etching wastewater.

The invention discloses a method for preparing M-phase VO2 by using an inactivated vanadium battery positive electrolyte. The method belongs to the technical field of vanadium dioxide, and comprises the following steps: (1) adding a reducing agent into the anode electrolyte of the failed vanadium battery to carry out reduction reaction, adding a precipitant into the electrolyte after the reductionreaction is finished to adjust the pH value to 3-6, carrying out solid-liquid separation, and washing the solid product to obtain a black precipitate; and (2) calcining the black precipitate to obtain VO2 powder. According to the method, the inactivated vanadium battery electrolyte is used as a raw material, so that resource recycling is realized, and the preparation cost of VO2 is reduced; meanwhile, the method is simple in process and suitable for industrial application; and the prepared VO2 is high in purity, high in additional value and high in crystallinity, and can be widely applied tothe fields of intelligent windows, photoelectric switches, thermistors and the like.

The invention discloses a processing process of dioctyl terephthalate. The processing process comprises the following steps that 1, terephthalic acid and isooctyl alcohol with the weight ratio being 1:(2-3) are adopted as main raw materials, an esterification reaction is carried out at normal pressure and the temperature of 120 DEG C to 230 DEG C, after reacting is carried out for 8 h to 10 h, the temperature is raised to 225 DEG C to 235 DEG C, a tetraisopropyl titanate catalyst is added, the amount of the catalyst is 0.05% of the sum of the amount of the main raw materials, and a primary product is obtained through reacting; 2, the primary product is subjected to vacuum flashing treatment; 3, a sodium carbonate solution is added into the primary product in the step 2 for reacting for 10 min, then water is continuously added for 15 min for washing, and drainage is carried out after sedimentation is carried out for 40 min; 4, after the primary product is subjected to acidity adjustment, water is introduced into a reaction still, the primary product is vaporized to form azeotrope with excessive alcohol, the product is discharged after condensation, and dealcoholization is carried out; 5, finally, finished dioctyl terephthalate is obtained through filtering. The process is simple in condition and high in finished product quality, and the reaction process is environmentally friendly.

The present invention provides a C/gamma-Fe2O3 composite material recycling method, which comprises: (1) sprinkling a C/gamma-Fe2O3 composite material onto the surface of oil water or dye sewage, and carrying out bubbling stirring to completely adsorb the dye or oil; (2) electrifying an electric magnet, and carrying out magnetic recovery on the C/gamma-Fe2O3; (3) carrying out power-down on the electric magnet, dispersing the recovered C/gamma-Fe2O3 composite material of the absorbed oil or dye in an organic solvent, and carrying out bubbling stirring; and (4) electrifying the electric magnet again, carrying out magnetic adsorption on the desorbed C/gamma-Fe2O3 composite material, sprinkling in an organic solvent again, carrying out desorption, repeatedly performing the steps 3-5 times, recovering the C/gamma-Fe2O3 composite material, and drying so as to be recycled. According to the present invention, the method has characteristics of simple process and easy operation; the characteristics of the material are used to achieve the magnetic oil water separation; and the continuity is strong, the problem that the traditional material is not easily regenerated is well solved, and the resource recycling and re-use is achieved.

The invention relates to a method using agricultural waste composting to produce a flower culture medium. The method is characterized by including the steps of S1, preprocessing agricultural waste; S2, performing composting fermentation; thirdly, preparing the culture medium. The invention further provides a flower culture medium produced by the method. The produced flower culture medium can evidently promote flower growth, can allow flowers to grow robustly and have dark green leaves and large and many flowers bright in color and can prolong the flowering period; the produced culture medium is low in cost, energy-saving, environmentally friendly, sufficient in nutrients and good in breathability and water-retaining performance; agricultural waste recycling can be achieved, waste is turnedinto treasure, energy is saved, and environmental protection is benefited.

The invention provides a basic titanium sol dye-fixing agent. The basic titanium sol dye-fixing agent is prepared through sol-gel reaction on butyl titanate, water, alcohol, a catalyst and a silane coupling agent serving as raw materials according to a molar ratio of (1 to 3) to (8 to 16) to (18 to 25) to (2.0 to 3.5) to (0.001 to 0.01). The invention also provides a preparation method of the basic titanium sol dye-fixing agent. The basic titanium sol dye-fixing agent and the preparation method of the basic titanium sol dye-fixing agent disclosed by the invention have the advantages that the colour fastness to light of woods can be obviously improved.

The invention discloses a method for preparing a high-strength and high-toughness double-wall corrugated water discharge pipe material by using waste beverage bottles. The method comprises: S1, pretreatment of waste beverage bottles; S2, chain extension of the waste beverage bottles; and S3, molding of water discharge pipe material. The invention further discloses the high-strength and high-toughness double-wall corrugated water discharge pipe material prepared according to the method. According to the invention, with the method, the resource recycling of waste beverage bottles can be efficiently and rapidly achieved, waste can be turned into wealth, the double-wall corrugated water discharge pipe with characteristics of high strength, high toughness, good weather resistance, good flame retardance, good high-temperature resistance and long service life can be manufactured, and high economic value, social value and ecological value are achieved.

The invention discloses an oxygen blocked composite film, a preparation method thereof and a packaging box. The oxygen blocked composite film comprises a heat-sealing layer, a blocked layer and a supporting layer which are stacked in sequence, wherein the heat-sealing layer comprises a thin film layer formed by PETG; the blocked layer comprises at least one first blocked thin film layer formed byEVOH and/or at least one second blocked thin film layer formed by PA; the supporting layer comprises a biaxially oriented thin film; and the fusing co-extrusion compounding is performed between the heat-sealing layer and the blocked layer and between the blocked layer and the supporting layer through bonding layers. When the oxygen blocked composite film provided by the invention is used as a cover film of a PET packaging box body, the packaging can be realized without additionally adding a thin film layer for heat sealing; after the oxygen blocked composite film is used for packaging the PETpackaging box, the oxygen blocked composite film can be completely separated from the packaging box body, and thus, the resource recycling of the PET packaging box is realized.

The invention discloses a combined type tool for cutting a tuyere second jacket of a blast furnace. The tool comprises a rotating shaft. Multiple annular tool bodies are arranged on the rotating shaft in a sleeving manner in the axial direction. The outer diameters of the annular tool bodies distributed on the rotating shaft in the axial direction are gradually reduced. A tool cutting face is formed when outermost cutting points of the multiple annular tool bodies conduct rotary cutting, the annular tool bodies can be moved and adjusted in the axial direction, and therefore the included angle between the tool cutting face and the horizontal plane is adjusted. The requirement for cutting different sizes of tuyere second jackets is met, dense smoke and dust cannot be generated in the tuyere second jacket cutting process, resource recycling of tuyere second jacket copper materials can be achieved, and building of energy-saving and environment-friendly steel enterprises is facilitated.

The invention discloses an environment-friendly foaming material based on EVA waste materials and a treatment method of the EVA waste materials. The treatment method comprises the following steps: step 1, crushing waste materials such as waste EVA shoe soles, waste EVA sheets, waste EVA leftover materials and the like to obtain strip-shaped crushed materials; 2, the strip-shaped crushed materials obtained in the step 1, sarin resin and PMP are put into an internal mixer according to the weight ratio of 85: (4-10): (4-8), the internal mixing temperature is gradually increased, the highest temperature is 150 DEG C, the internal mixing time is 18-25 min, and blocky internal mixing materials are obtained; step 3, treating the blocky internal mixing material after internal mixing through a screw extruder and an open mill to obtain an EVA recovery film; by limiting the specific treatment mode of the EVA waste materials, resource recycling of EVA shoe sole material heads, defective products, waste products and leftover materials is achieved, the environmental problem caused by white pollution is relieved, the adding proportion of the treated EVA waste materials in shoe sole preparation can be increased to 70% or above, resource waste is greatly reduced, and the utilization rate of the waste materials is increased.

The invention discloses a magnetic carbon-based catalyst which is prepared by the following steps: grinding electric furnace dust by using a ball mill, and carrying out drying at 75-105 DEG C to obtain pretreated electric furnace dust; taking the pretreated electric furnace dust, adding concentrated hydrochloric acid, adding deionized water and a carbon source after reaction, conducting stirring, filtering and washing until the pH value of the solution is neutral, and carrying out drying; calcining a dried sample at 600-800 DEG C for 2 hours or more to obtain a magnetic carbon carrier; and mixing the obtained magnetic carbon carrier and sodium methoxide, adding deionized water, conducting mixing at a constant temperature, carrying out magnetic stirring, performing drying, heating the dried sample to 600-700 DEG C at a heating rate of 5-7 DEG C/min in an inert gas, keeping the sample at the temperature for 2 hours or more, and carrying out cooling to obtain the magnetic carbon-based catalyst. The catalyst has a good catalytic effect, the yield of biodiesel is greater than 98%, and the yield of the catalyst after returning is greater than 90%. And moreover, the recycling capability of the catalyst is better, and the yield of the biodiesel can reach 80% or above after seven times of reactions.

The invention discloses a method of recovering an antioxidant 1024 intermediate, and relates to the technical field of organic chemistry. The method includes the following steps: pre-treatment on antioxidant 1024 reaction waste liquid, first solid-liquid separation, first vacuum distillation, secondary solid-liquid separation, secondary vacuum distillation, crystallization, collection and packaging. When the method disclosed by the invention is used to fully recover and utilize by-products in the antioxidant 1024 reaction waste liquid, toxin of products is reduced, the production is energy-conserving and environmentally friendly, and pollution to the environment is avoided. The technique is easy and convenient for operation, separation and extraction, and storage. Secondary pollution is effectively avoided. The antioxidant 1024 intermediate is fully recovered. Resourceful utilization is realized. Raw material cost of the antioxidant 1024 is greatly reduced. Large-scale industrialized production of the antioxidant 1024 is possible.