30results about How to "Realize green recycling" patented technology

The invention provides a magnetic photocatalysis resource recycling type artificial adsorption floating bed which is formed by stacking a photocatalysis layer, a magnetic nitrogen removal adsorption layer and a magnetic phosphorus removal adsorption layer sequentially from top to bottom, wherein the photocatalysis layer suspends over the water surface; and the magnetic nitrogen removal adsorption layer and the magnetic phosphorus removal adsorption layer are immerged in the water surface. The magnetic photocatalysis resource recycling type artificial adsorption floating bed provided by the invention can be thrown for use simply and does not need artificial maintenance at ordinary times; the secondary function recovery can be realized through simple water flushing and sunlight exposure and secondary spraying; and the waste matrix material such as sludge and straw is prepared by the technical means such as exposure and ultrasonic dispersion without addition of any chemical raw materials which can cause secondary pollution, and new environmental pollution is avoided. The magnetic photocatalysis resource recycling type artificial adsorption floating bed has the advantages that the investment cost is low, secondary pollution is avoided, the resource utilization and green recycling of the industrial and agricultural wastes are realized by consuming the sludge of river channels.

The invention relates to equipment and a method for thermal removing of paint layers of waste metals. The removing equipment comprises a feed bin (1), a feed inlet (2), a gate valve 1 (3), a valve 1 (4), an isolation bin 1 (5), a valve 2 (6), a gate valve 2 (7), a valve 3 (8), a heating furnace (9), a furnace tube (10), a mechanical pump (11), a valve 4 (12), a gate valve 3 (13), an isolation bin 2 (14), a valve 5 (15), a valve 6 (16), a gate valve 4 (17) and a base (18). The equipment has the functions of carrying out drying and pollution-free thermal paint removing on the waste metals containing the paint layers. The method for removing the paint layers on the surfaces of the waste metals, disclosed by the invention, comprises the steps of material drying and controllable oxygen partial pressure rotary continuous thermal paint removing. The equipment and the method, disclosed by the invention, have the characteristics of heating uniformity, high paint removing efficiency and no pollution and can be widely applied to waste metal recovery.

The invention discloses building color sand, a method for preparing the same and application of the building color sand. The method includes uniformly mixing batch mixtures, adhesive and quartz sand with one another; roasting the batch mixtures, the adhesive and the quartz sand at the temperature of 740-880 DEG C, coating the quartz sand with the batch mixtures and coloring the quartz sand by thebatch mixtures to form the building color sand. The batch mixtures comprise waste glass, borax, antimony white and inorganic colorants. The building color sand, the method and the application have theadvantages that color sand raw materials with the waste glass are sintered at the high temperature in an all-inorganic manner to prepare the building color sand, and accordingly the waste glass can be recycled in a green manner; the building color sand prepared by the aid of the method mainly can be applied to building external walls and also can be used for color tiles for buildings, interior decoration and the like.

The invention discloses a preparation method of bupropion hydrochloride. M-chlorophenylacetone is used as a raw material to take bromination reaction with sodium bromide, sulfuric acid and hydrogen peroxide in a water-halohydrocarbon solvent to prepare a brominated intermediate; then the prepared bromide reacts with tert-butylamine to prepare amfebutamone, after the reaction for preparing amfebutamone is completely reacted, the water is directly added, after a reaction solution is layered, the layered organic layer is cleaned and distilled to obtain amfebutamone, and obtained amfebutamone is acidified by virtue of isopropanol hydrochloride to obtain bupropion hydrochloride; and the peparation process of amfebutamone, the alkalinity of a water layer obtained after the layering of the reaction solution is adjusted by using sodium hydroxide, after tert-butylamine is recovered in a distillation manner, the water layer comprising bromine ions is concentrated, the pH value is adjusted to beneutral by using sulfuric acid, the obtained aqueous solution comprising sodium bromide is used for taking the bromination reaction again so as to be circularly utilized. By adopting the preparation method, the environment-friendly circular utilization of bromine is realized, and the production cost is reduced.

The invention belongs to the technical field of waste power lithium ion battery recovery, and particularly relates to a green recovery treatment method for a positive electrode of a waste lithium ironphosphate battery. According to the method, sodium carbonate is used as a recovery aid to recover the waste lithium iron phosphate, and the resourceful treatment of the positive electrode of the waste lithium iron phosphate battery is realized through a series of process routes such as ball-milling mixing, solid-phase sintering, pulping and filtering, evaporative crystallization and the like. Themethod is characterized in that the recovery of all elements of the positive electrode of the waste lithium iron phosphate battery can be realized, the recovered products are LixFeyO2 (x is more thanor equal to 0.5 and less than or equal to 1, y is more than or equal to 1 and less than or equal to 2.5, x:y is more than or equal to 0.2 and less than or equal to 1) and Na3PO4.12H2O. The treatmentmethod has the advantages of simple operation, low cost and easy industrialization.

The invention discloses a steel-concrete combined foundation pit supporting structure. The steel-concrete combined foundation pit supporting structure comprises a steel sheet pile, a ring beam, a secondary beam, a connecting steel bar and a bracket support. The steel sheet pile forms a waterproof structure, one end of the connecting steel bar is fixed to the steel sheet pile, the other end of theconnecting steel bar penetrates through the ring beam and extends into the secondary beam, and the bracket support is arranged below the secondary beam. According to the structural design, the steel-concrete combined foundation pit supporting structure is formed by effectively combining the steel sheet pile, the ring beam, the secondary beam, the connecting steel bar and the bracket support, the defects that a conventional foundation pit supporting construction speed is low and the part recovery rate is low are overcome, the foundation pit supporting construction efficiency is improved, and green recycling of parts is realized to a greater extent.

The invention discloses a green production and rotation technique of fresh corn and strawberries. The green production and rotation technique comprises a fresh-corn green production technology, a strawberry green production technology and crop rotation. The green production and rotation technique has the advantages that after the straw of the fresh corn is returned to a field, the soil granular structure and soil physical and chemical properties can be improved favorably, diseases and pests can be reduced, soil fertility can be improved, soil organic matter content can be increased, and soil structure and quality can be improved; the corn straw can also be used as the ensilage for cattle and sheep cultivation, cattle and sheep manure is used as the raw material of biogas, biogas residues are returned to the field, and green cyclic utilization is achieved; soil fertility is improved while environment pollution is reduced, the diseases and pests of the strawberries and the fresh corn arecontrolled through a green disease and pest control technology, pesticide use amount is reduced, and the natural enemies of the pests and the ecological environment are protected to the maximum extent.

The invention discloses a mulched drip irrigation salinized cotton field ecological conditioning method. The method specifically includes the following steps that 1, before seeding, a humic acid solution is sprayed; 2, halophyte is sown; 3, the halophyte is covered with cotton straw; 4, water is supplemented to the halophyte; 5, the humic acid solution is applied to a field; 6, the halophyte is harvested. The method solves the problem that salt of an existing mulched drip irrigation cotton field is hidden and threatens the sustainability of the mulched drip irrigation technology.

The invention provides a method for recovering lead oxide from a waste lead-acid storage battery, and belongs to the technical field of clean recovery and lead oxide recycling of the waste lead-acid storage battery. The method comprises the following steps: recycling lead carbonate from the waste lead-acid storage battery, and crushing the lead carbonate to obtain lead carbonate powder; and carrying out flash thermal decomposition treatment on the lead carbonate powder to obtain lead oxide. According to the method, lead carbonate recovered from the waste lead-acid storage battery is used as araw material, and lead oxide is obtained by adopting a flash thermal decomposition method at a proper temperature. The method has the outstanding advantages of short reaction time, short process flow,no pollution, low energy consumption and the like, and green cyclic utilization of the waste lead-acid storage battery is realized.

The invention relates to a green cyclic utilization method of a honeycomb type denitration catalyst, and belongs to the field of flue gas denitration and material cyclic utilization. A regeneration process route and a repreparation process route are set, and a regeneration production line and a repreparation production line are arranged in parallel; a regeneration process or a repreparation process is selected according to the performance of the waste honeycomb type denitration catalyst for green cyclic utilization; and the selection basis of the regeneration process and the repreparation process is as follows: if the axial compressive strength and the radial compressive strength of the waste honeycomb type denitration catalyst are respectively greater than or equal to 1.0 MPa and greaterthan or equal to 0.2 MPa, and the specific surface area is greater than or equal to 40.0 m<2>/g, the regeneration process route is selected, and otherwise, the repreparation process route is selected.According to the green cyclic utilization method of the honeycomb type denitration catalyst, regeneration and repreparation processes are combined, valuable components in the waste denitration catalyst are fully utilized, the use amount of water is greatly reduced, and closed-loop cyclic utilization of the denitration catalyst can be realized.

The invention discloses a meat goose breeding method capable of accelerating the growth cycle. The meat goose breeding method comprises the following steps of goose farm and shed construction, ryegrass planting, gosling breeding and fattening and slaughtering. The ryegrass is planted in a pond of a goose farm, the excrement of meat geese is continuously composted and applied to the ryegrass, thenthe ryegrass is provided for feeding the meat geese, excrement waste is effectively treated and effectively utilized, the problems of treatment and pollution of a large amount of excrement are effectively solved, and green cyclic utilization is achieved; meanwhile, the ryegrass is used as forage grass, so that the feed feeding amount of the meat geese is reduced to a certain extent, the feed inputof the farm is reduced, the recipes of the meat geese are enriched, the ryegrass is easy to digest and promote absorption, the physique of the meat geese is enhanced, the growth of the meat geese isaccelerated, and the growth cycle of the meat geese is shortened; and meanwhile, mixed bacterial liquid is used for continuously composting the excrement of the meat geese, so that the fermentation time of the excrement of the meat geese is effectively shortened, the operation is simple and convenient, and the operability is high.

The invention discloses a preparation method of benzodioxole. The preparation method comprises the following steps: with DMSO, dichloromethane and sodium hydroxide as base materials, controlling a temperature to be not higher than 100 DEG C in a microwave heating manner, dropwise adding a DMSO solution of catechol, and separating out the product benzodioxole and dichloromethane after a reaction isfinished. The preparation method is low in price, mild in reaction conditions, low in the generation amount of wastewater and good in process safety, can realize green recycling of an organic solvent, and reduces production cost.

The invention relates to a preparation method of amyl 3-pentyloxy propionate, which comprises the following steps: carrying out transesterification and addition reaction on n-amyl alcohol and an acrylate compound under the action of a basic catalyst to obtain a product containing amyl 3-pentyloxy propionate, and carrying out primary reduced pressure distillation treatment on the product containing amyl 3-pentyloxy propionate under specific conditions to obtain amyl 3-pentyloxy propionate. Distilling off a mixture of an alcohol compound and an acrylate compound, wherein the kettle liquid is a first crude product containing 3-pentyloxy amyl propionate; then carrying out secondary reduced pressure distillation treatment on the first crude product containing amyl 3-pentyloxypropionate under specific conditions, distilling out a fraction at 65-125 DEG C to obtain n-amyl alcohol, and taking a kettle liquid as a second crude product containing amyl 3-pentyloxypropionate; and neutralizing a second crude product containing the amyl 3-pentyloxy propionate by using acid, layering, taking an oil phase, and carrying out third reduced pressure distillation treatment under specific conditions to distill out a fraction at 110-153 DEG C to obtain the amyl 3-pentyloxy propionate, thereby enhancing the yield and purity of the amyl 3-pentyloxy propionate.

The invention discloses an ecological breeding method and device for rabdosia based on a canvas pond, and belongs to the technical field of aquaculture. The breeding method comprises the steps of surveying the terrain, arranging a breeding pond matched with the terrain and supporting facilities, breeding fries, breeding commercial fishes, preventing and treating diseases and the like; the device comprises a culture pond which is composed of a plurality of communicated canvas ponds, oxygenation assemblies are arranged in the canvas ponds, the canvas ponds are connected with a sewage collecting and discharging assembly and a tail water treatment assembly, and electric energy is provided by a photovoltaic power generation assembly. The method can utilize natural conditions of a mountainous area to carry out stepped running water imitated ecological fish culture, is low in cost and easy to maintain, and realizes intensive culture of rabdosia lophanthide by recycling tail water.