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191results about How to "Conducive to sustainable use" patented technology

Thick-bed mining subsidence-land dynamic pre-reclamation method at plane mining-area

The invention discloses a dynamic pre-reclamation method for subsided land caused by exploiting a high seam in a plane mining area, which belongs to the technical field of mining and is used for solving the land reclamation problem of the subsided land caused by unstable subsidence mining. The dynamic pre-reclamation method is carried out when a mining subside is not complete and seeper is not formed; the dynamic pre-reclamation method consists of two stages: engineering design calculation and engineering implementation according to the scale, range and target needed to be reclaimed. The stage of engineering design calculation comprises the steps of: calculating a predicated subsidence, dividing the construction field pieces, confirming the construction parameters and the like. Compared with the prior art of 'first destroying and then controlling', the dynamic pre-reclamation method has the following advantages that the dynamic pre-reclamation realizes the full and effective combination of miming and reclamation, can reduce the reclamation investment, shorten the reclamation period, increase the reclamation benefit, and can promote the sustainable utilization of land resources in a mining area and the sustainable development of the mining area, can effectively ease the deterioration of the ecological environment in the mining area caused by the vegetation deterioration due to the mining subsidence and water and soil loss and most extensively protect the land resources.
Owner:TANGSHAN BRANCH COAL SCI ACAD

Coated natural kraft and manufacturing method thereof

The invention relates to coated natural kraft and a manufacturing method thereof. The traditional coated kraft does not have the advantages of attractive appearance, environment friendliness, high strength and good printing performance. The coated natural kraft disclosed by the invention comprises natural kraft, a surface sizing layer and a surface coating layer and is characterized in that a bottom layer comprises OCC (Old Corrugated Case) waste paper pulp and a core layer comprises waste paper; a surface layer comprises natural wood pulp and waste paper pulp, wherein the weight percentage of the natural wood pulp is 30% to 90% and the balance is the waste paper pulp; the surface sizing layer comprises a front sizing layer and a back sizing layer; and the surface coating layer comprises a bottom coating layer, a middle coating layer and a surface coating layer. The manufacturing method for the coated natural kraft sequentially comprises a natural kraft preparing working procedure, a sizing working procedure, a coating working procedure and a molding working procedure. The coated natural kraft has the advantages of reasonable structure design, attractive appearance, environment friendliness, high strength, good printing performance, simple preparation technology, low production cost and good quality.
Owner:JIAN GRP

Transverse-furrow and sequential-ridge mellow soil anti-erosion farming method of purple soil slope farmland

The invention discloses a transverse-furrow and sequential-ridge mellow soil anti-corrosion farming method of a purple soil slope farmland and particularly relates to the field of a soil erosion management technique of the purple soil slope farmland. In the method disclosed by the invention, a transverse furrow is excavated along the contour line on the purple soil slope farmland at the slope length interval which is less than the rill erosion generation critical length of the modified slope surface; the cross section of the transverse furrow is in an arc shape; the formed transverse furrow divides the whole slope farmland plot into multiple small farming units in the transverse slope direction; the two ends of the transverse furrow are connected with the original drainage furrows at the two ends of the slope farmland plot; and the integral farming terrain conditions with alternate furrows and ridges are formed by adopting a sequential-slope ridging farming mode, i.e. alternately farming and ridging in the sequential slop direction and reverse slop direction. The method disclosed by the invention can reduce the water and soil loss and prevent and control the soil erosion of the slope farmland, is beneficial to the enhancement of the water content in the soil of the farmland plot in the descending direction of the transverse furrow, improves the drought resistance of crops, maintains the agricultural productivity of the slope farmland and realizes the sustainable utilization of slope farmland water and soil resources.
Owner:INST OF MOUNTAIN HAZARDS & ENVIRONMENT CHINESE ACADEMY OF SCI

Carbon fiber microalgae cultivating system using wastewater resources

A carbon fiber microalgae cultivating system using wastewater resources comprises a wastewater resources conveying subsystem, an algae cultivating pond, a biomass collecting subsystem, a drying system, outward transportation, a carbon fiber water quality regulating reservoir, a CO2 charging system, an illuminating system, a water quality and water quantity monitoring system, a wastewater resource regulating and controlling subsystem and the like, wherein the regulating reservoir is used for reducing the concentrations of organic matters and nitrogen and phosphorus pollutants in the wastewater resources, removing suspended matters, heavy metals and toxic substances and increasing the transparency of a water body; and the cultivating pond is used for cultivating biomass for high-yield oil and high-protein attached algae and microalgae, and thus the nitrogen and phosphorus are further degraded and the CO2 is fixed by the high-yield oil and high-protein algae. The carbon fiber microalgae cultivating system disclosed by the invention is an integrated product and equipment system for realizing water quality purification, algae cultivation and reduction and emission of greenhouse gases by using the wastewater resources; the technical bottleneck of eutrophication water body control and CO2 reduction and emission is solved; the economic pressure of governing water containments and the greenhouse gases is retarded; and the maximization of environment benefit, economic benefit and social benefit is realized by fully utilizing the wastewater resources.
Owner:武汉环天禹生物环保科技有限公司

Method for repairing soil heavy metal pollution by synergy of plants, mycorrhiza and earthworm

The invention refers to the technical field of soil recovery, and particularly relates to a method for repairing soil heavy metal pollution by synergy of plants, mycorrhiza and earthworm. The method comprises the following steps: inoculating mycorrhiza fungi to the soil polluted by heavy metal, and then planting specific plants in the soil; at last, inoculating earthworm in the soil at the seedling stage of the plant, and forming a plants-mycorrhiza-earthworm system; repairing the soil. By adopting the plants-mycorrhiza-earthworm system, the technology of repairing soil heavy metal at an original position and a fixed point is established, and the purpose of repairing the farmland soil heavy metal pollution can be realized. The earthworm can improve the infection rate of the mycorrhiza, so as to enhance the repairing function of the mycorrhiza on the heavy metal polluted soil, lighten soil pollution and protect the farm crops from being polluted; and thereby, human health is protected; besides, the method is low in investment, easy to master the technology, high in product additional value, quick in investment return, and very suitable for our actual condition, and can better promote the soil sustainable use and development.
Owner:BEIJING WO BAO BLUE ENVIRONMENTAL PROTECTION SCI & TECH LIMITED

Production method of urea sulfuric acid multi-nutrient functional compound fertilizer

The invention relates to a production method of a urea sulfuric acid multi-nutrient functional compound fertilizer. The method comprises the following steps of: preparing a urea-formaldehyde condensate solution, preparing a urea sulfuric acid solution, preparing urea-sulfur-phosphorus slurry, preparing a granular fertilizer and the like. According to the production method disclosed by the invention, medium and low-grade phosphorus ore is taken as a main phosphorous source for producing the compound fertilizer so as to be conductive to sustainable utilization and protection of phosphorous sources in China; urea-formaldehyde is used for providing part of slow-action nitrogen, and a calcium-magnesium-phosphorous fertilizer and the like are used for providing long-action phosphorous and potassium so as to improve the utilization rate of nutrients in the fertilizer, simultaneously provide various trace nutritional elements and improve the anti-lodging and anti-disease ability of crops; and a surfactant and the like are added so as to be capable of improving reaction status and giving fertilizer weeding, soil improvement and other functions to the fertilizer. When the same yield of the crops is achieved, compared with the existing fertilizer, the total nutrients in the fertilizer disclosed by the invention can be reduced by above 5%, the fertilizer is saved, the synergy is realized, the production cost is reduced by above 10% in comparison with the ordinary compound fertilizer, and the cost is reduced by above 20% in comparison with the existing slow-release fertilizer.
Owner:ZHENGZHOU UNIV

Method for confirming coal mining sunken surface soil peeling space time based on geographic information system (GIS) grid unit

ActiveCN102889083AAvoid influenceSolve the problem of topsoil strippingUnderground miningSurface miningSoil scienceWater level
The invention relates to a method for confirming a coal mining sunken surface soil peeling space time based on a geographic information system (GIS) grid unit, belonging to the fields of mining technology, soil utilization and soil rehabilitation. The method comprises the following steps: classifying ground units, obtaining ground elevation information of every ground unit before exploring, predicting sunken by stages; obtaining the elevation property at every predict stage of every ground unit, and confirming the water accumulation time of every ground unit, thereby confirming the time of peeling surface soil of every ground unit. Through classifying the ground unit and combining the underground exploring stage, the water accumulating time of any ground unit and the time of surface soil peeling time are determined, thus the time and place of performing the surface soil peeling activity can be confirmed clearly; the method is simple and easy to understand and convenient to perform the actual construction operation, thus the surface soil protection work of a high diving water level mine zone can be specifically carried out at a fixed quantity; the method provides the guarantee for the soil rehabilitation at the later period and is beneficial to improve the rehabilitation plowing rate, and accelerate the sustainable utilization and development of the soil resource in the mine lot.
Owner:CHINA UNIV OF MINING & TECH (BEIJING)

Three-season enhancement and releasing method for salmons in spawning area rivers

The invention belongs to the technical field of proliferation and maintenance of fishes, and discloses a three-season enhancement and releasing method for salmons in spawning area rivers. The salmonsare highly anadromous fishes, and are artificially migrated to river sections with functions of a spawning area or branch water areas of the river sections for enhancement and releasing, a preferablespecific optimized upstream migration route capable of arriving at the spawning area is designed and selected for returning to the community (parent fishes), and propagation of generations of proliferation groups is realized; salmon releasing groups such as fertilized eggs or eyed eggs, juvenile fishes and parent fishes at different fresh water life history stages are migrated to spawning area rivers with suitable habitats, enhancement and releasing are carried out at three seasons including the winter, the spring and the autumn, and the diversity and the adaptability of the proliferation groups are improved. By the method of manually assisting in field incubation of fish eggs and natural proliferation of parent fishes, investment of enhancement and releasing infrastructure construction ofthe fishery can be reduced, the occupied area of permanent work is reduced, and the production cost for artificial incubation of juvenile fishes with the equal releasing number is saved.
Owner:HEILONGJIANG RIVER FISHERY RES INST CHINESE ACADEMY OF FISHERIES SCI

Automatic sorting treatment system for kitchen waste and treatment process

The invention discloses an automatic sorting treatment system for kitchen waste and a treatment process, relates to the field of domestic waste treatment, and solves the problems that existing kitchenwaste is large in reserve and threatens human health. The automatic sorting treatment system comprises a transport vehicle, a material collecting bin, a water filtering elevator, a large-foreign matter sorting machine, a fine crushing and sorting machine, an extrusion dehydrator, an oil-water separation device, a secondary pendulum bob pulping machine and an anaerobic fermentation tank, wherein the water filtering elevator is used for receiving the kitchen waste uniformly conveyed by the material collecting bin and carrying out water filtering treatment; the large-foreign matter sorting machine is used for sorting large foreign matters in the kitchen waste residues; the fine crushing and sorting machine is used for carrying out fine crushing on the large sorted kitchen waste residues andsorting out inorganic impurities; the extrusion dehydrator is used for carrying out extrusion dehydration treatment on the finely sorted kitchen waste residues; the oil-water separation device is usedfor mixing kitchen waste swill obtained after water filtration and kitchen waste slurry obtained after extrusion dehydration and then carrying out oil extraction and dehydration treatment; the secondary pendulum bob pulping machine is used for finely pulping the kitchen waste residues subjected to oil extraction and dehydration; and the anaerobic fermentation tank is used for carrying out anaerobic fermentation on kitchen waste liquid subjected to oil extraction and dehydration. The automatic sorting treatment system is high in treatment efficiency, good in treatment effect, energy-saving andenvironmentally-friendly.
Owner:吉林省佳园再生科技有限公司
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