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542 results about "Resource conservation" patented technology

Treatment and Utilization of Silty Coastal Salt Soil

The invention relates a treatment and utilization technology of saline soil resources, in particular to a treatment and utilization method of muddy seashore saline soil. The method comprises the following steps of: establishing a water supply system consisting of a fresh water well, a water pump and a water supply pipe; excavating a salt leaching drainage ditch so as to establish a drainage salt leaching system; applying a cow dung and crop stalk fertilizer and a phosphogypsum soil and fertility improving fertilizer; with a small raised field as unit, irrigating fresh water to wash and leach salt; and planting and maintaining vegetation through cultivating the land by machine, sunning the upturned soil, planting the vegetation and irrigating the vegetation, wherein a planting technology with gradient increasing salt tolerance is adopted in planting the vegetation. According to the invention, for the salinity and structural characteristics of the muddy seashore saline soil, the muddy seashore strongly salined soil in the coastal zone is treated and utilized in combination with engineering measures, physical measures and chemical measures on the basis of salt tolerant plant appraisal; and The treatment and utilization method of the muddy seashore saline soil provided by the invention has the advantages of simplicity in operation, resource conservation, soil treatment and utilization cost of less than 166.21 yuan/m2 and plant survival rate of more than 90%.
Owner:COASTAL AGRI RES INST HEBEI ACAD OF AGRI & FORESTRY SCI

Drought resisting and water saving cultivation technique for performing direct sowing on dry paddy field by fully using natural precipitation

The invention discloses a drought resisting and water saving cultivation technique for performing direct sowing on a dry paddy field by fully using natural precipitation, which is used for adjusting the growth period of paddy rice according to water requirements at each growth and development stage of the paddy rice and statistical data of historical meteorological data for a natural precipitation rule of every local ten days, so that each growth and development stage of the paddy rice is matched with the natural precipitation of every local ten days and corresponding comprehensive technical measures are taken to fulfill the aim of resisting drought, saving water and stably increasing yield. The cultivation technique changes a traditional paddy rice cultivation mode, finishes one season of paddy rice production only by using natural precipitation without soaking seed, raising rice seedlings and transplanting or needing irrigation and plowing and can directly perform direct sowing production on the dry paddy field in a dry land or a non-dry land. Therefore, the technique saves irrigation water, lowers costs of seedlings, transplanting, drought resisting, water pumping, plowing and the like, saves labor, cuts down expenditures and increases income and is favorable for realizing increment of grain production and rural incomes and agricultural efficiency and realizing resource conservation, energy conservation and emission reduction.
Owner:陈镜任

Metal organic skeleton material for removing cobalt ions from wastewater and preparation method of metal organic skeleton material

The invention discloses a metal organic skeleton material for removing cobalt ions from wastewater and a preparation method of the metal organic skeleton material. The method comprises the following steps: preparing UiO-66-NH2 firstly, then preparing UiO-66-R1, and finally, preparing a bis-Schiff base functional group-containing metal organic skeleton material; and then using the bis-Schiff base functional group-containing metal organic skeleton material for adsorption treatment on the cobalt ions in the wastewater, namely, carrying out adsorption treatment on the cobalt-containing wastewater, and inspecting influences of factors, including cobalt-containing solutions with different pH values, different adsorption temperatures, different adsorption time and different original cobalt ion concentrations on cobalt ion adsorption with UiO-66-Schiff base as an adsorbent, wherein the adsorbing capability of the adsorbent to the cobalt ions under a preferred condition can reach 256mg/g. The preparation method of the invention has the characteristics of simpleness in technology, no secondary pollution and high adsorbing capability; the metal organic skeleton material has the characteristics of capability of cyclic utilization, resource conservation, cost reduction and the like; and a new method for removing the cobalt ions from the cobalt-containing wastewater is found.
Owner:SICHUAN UNIV

Constrained 2D tracking control method for uncertainty intermittent process

The invention aims at an intermittent process with uncertainty, and proposes a constrained 2D tracking control method for the uncertainty intermittent process. The constrained 2D tracking control method comprises the steps of: firstly, designing an iterative learning control law for a given system dynamic model; secondly, converting the original system dynamic model into a 2D-FM closed-loop systemmodel expressed in the form of a predictive value according to a 2D system theory and the designed iterative learning control law through introducing state errors and output errors; and finally, giving a sufficient condition expressed in the form of a linear matrix inequality (LMI) for ensuring robust asymptotic stability of a closed-loop system and an expression form of the optimal control law according to a designed infinite time domain performance index and a Lyapunov stability theory. According to the constrained 2D tracking control method, numerical values of tracking errors under the control of the constrained 2D tracking control method are smaller, and the convergence is faster; more importantly, the control input does not drastically fluctuate and only require slight adjustment, thereby being conducive to resource conservation and reducing troubles caused by frequent operations.
Owner:LIAONING UNIVERSITY OF PETROLEUM AND CHEMICAL TECHNOLOGY +1

Inner-ring rib two-way mold-splitting rotary extrusion forming mold and mold opening method

The invention discloses an inner ring rib two-way mold-splitting rotary extrusion forming mold and a mold opening method. According to the inner ring rib two-way mold-splitting rotary extrusion forming mold and the mold opening method, a solid bar is adopted as a blank and used for the forming of a cylindrical component with an inner ring rib, and the internal streamline completeness of the formedcomponent is guaranteed. The inner ring rib two-way mold-splitting rotary extrusion forming mold comprises a mold splitting device, a convex mold I, a convex mold II and a concave mold, wherein two sliding blocks used for the mounting of the convex mold I and the convex mold II are arranged in the mold splitting device; the shapes of the convex mold I and the convex mold II are completely the same; only one side of each of the two convex molds is provided with a groove used for the forming of the inner ring rib; the two convex molds are symmetrically mounted and capable of parallelly slidingalong a symmetric surface, namely a mold splitting surface, in a two-way manner; during the forming process, the blank is driven by the concave mold to rotate and the two concave molds are fed along the axial direction; and meanwhile, the leftward mold splitting motion and the rightward mold splitting motion of the two convex molds are correspondingly used for the forming of an inner rib or a cylinder wall, so that the forming of the cylindrical component with the inner ring rib can be achieved. The inner ring rib two-way mold-splitting rotary extrusion forming mold and the mold opening methodhave the following forming characteristics: the technological process is short and the streamline is complete; a relatively high ratio between the axial height and the radial height of the inner ringrib can be achieved; the material utilization ratio is high; and the resource conservation can be achieved.
Owner:YANSHAN UNIV

Environment protection coal-saving agent for cement vertical kiln

InactiveCN101463283AIncrease the amount of kilnAvoid hypoxiaSolid fuelsLiquid wasteCoal
The invention provides an environmental-friendly coal-saving agent for a cement shaft kiln, comprising the following raw materials by weight portion: 3-7 portions of a coal combusting low-temperature modifying agent, 2-6 portions of a compound sulphur-fixing agent, 0.5-0.96 portion of a combusting inductive agent, 3-7 portions of a raising agent, 56-96 portions of a combusting poising agent, and 5-15 portions of a highly-efficient sulphur-fixing agent. The coal combusting low-temperature modifying agent can be potassium permanganate, potassium chlorate, potassium perchlorate, sodium chlorate, sodium nitrate and the like; the compound sulphur-fixing agent can be sodium carbonate, calcium oxide and the like; the raising agent can be waste liquor of paper mill containing Na or/and Ca sulphonate and the like; and the combusting poising agent can be a chemical waste reducing substance containing sodium chloride and the like. The method solves the problems of environmental pollution and resource waste in the prior art, uses compatibility of multiple chemical raw material of 6-10 percent and chemical waste to prepare the coal-saving agent with small dosage and fast effect to be added to the production of the cement shaft kiln in trace quantity, and has the advantages of resource conservation by using waste, coal conservation and consumption reduction, and reduction of dust and SO2 discharge and environmental pollution.
Owner:陶小勇

Preparation method of paper-surface gypsum board

InactiveCN104973882AImprove bonding qualityAchieve self-consumptionCeramicwareSlurryToxic industrial waste
The invention discloses a preparation method of a paper-surface gypsum board. The method comprises the following steps: after being metered, gypsum clinker and PGCS are fully mixed, and then the mixture enters a mixer; paper pulp, mixing cement and foam respectively enter the mixer; the above dry and wet materials are fully stirred in the mixer to prepare uniform slurry, the slurry is continuously poured between two layers of covering paper, and a wet gypsum board is prepared by extrusion molding; and the wet gypsum board undergoes solidification, cutting, drying, final trimming, edge banding, stacking and packaging so as to prepare the paper-surface gypsum board finished product. According to the invention, bonding quality and strength of the board are enhanced; raw materials can be saved, energy consumption is reduced, and production cost is decreased; and dependence of bonding quality of the covering paper on operation and drying system is reduced. The scheme of drying the paper-surface gypsum board by the use of waste heat from a power plant or a steel mill is feasible. Energy conservation and emission reduction as well as automatic disposal of industrial waste residues are realized. In addition, the aggregate resources conservation purpose of ''low energy, low pollution and high return'' is achieved.
Owner:BEIJING NEW BUILDING MATERIALS PLC

Application of poly-dopamine composite magnetic micro-nano particles in oily sewage treatment

The invention belongs to the technical field of intersection of micro-nano materials and environmental engineering and relates to application of poly-dopamine composite magnetic micro-nano particles in oily sewage treatment. Poly-dopamine similar to the glossopodium component of a mussel is used as the surface modifier of magnetic ferroferric oxide micro-nano particles to prepare core-shell-shaped bionic composite magnetic micro-nano particles, and the composite magnetic micro-nano particles are used as oil-water separation materials for treating oily sewage. Due to the super-high bionic adhesion capacity, the composite magnetic micro-nano particles have super-high capacity of capturing oil drops in the oily sewage, so that an extremely high oil-water separation effect is realized. The raw materials are available, the method is simple and environmental friendly, the reaction is mild and the reaction speed is high; the operation of oil water separation is simple, the cost is low, the oil water separation effect is good, and industrial implementation is facilitated; the technical problem that oily sewage, particularly sewage produced during oil production for three times is difficult to treat is solved, and the poly-dopamine composite magnetic micro-nano particles have extremely important practical significance on resource conservation and environment protection.
Owner:XINJIANG TECHN INST OF PHYSICS & CHEM CHINESE ACAD OF SCI
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