45results about How to "Realize green and sustainable development" patented technology

The invention discloses a new energy power supply system and a control method for urban rail traction network, including an independent energy storage system located in the middle section of the line and a wind-solar-storage combined power generation system located in the depot or parking lot at the end of the line; according to offline prediction data, Obtain load forecast power and expected peak-to-valley values ​​from historical data, and then judge whether there is a load based on urban rail traffic data; judge operating conditions based on real-time voltage, and compare the load forecast power and expected peak-to-valley values ​​at the next moment to judge whether it is load operation According to the peak and valley state, different control strategies are determined by judging the results, so as to realize effective control of the energy storage device in the independent energy storage system, the wind-solar combined power generation device and the energy storage device in the wind-solar-storage combined power generation system. The invention can not only promote the consumption of renewable energy such as local scenery, but also improve grid voltage fluctuations, effectively recycle regenerative braking energy and at the same time cut peak loads and fill valleys, reduce urban rail operating costs, and have good economic benefits.

The invention discloses active powder concrete doped with coal ash and a preparation method of the active powder concrete. The active powder concrete doped with the coal ash is prepared from the following materials in parts by weight: 1 part of cement, 1.1 parts of quartz sand, 0.21 to 0.28 part of silica fume, 0.07 to 0.14 part of coal ash, 0.1 part of steel fibers, 0.1 part of small components, 0.2 part of water and 0.015 part of water reducer; and the active powder concrete doped with the coal ash is prepared by virtue of stirring, vibrating molding, mold stripping and high-temperature maintenance. The active powder concrete has the characteristics that the industrial waste slag powder is doped as an active component, and the novel active powder concrete is prepared by virtue of high-temperature maintenance, has the advantages of high strength, good mixability, low cost, environmental friendliness, simple preparation method and the like, is suitable for being popularized and used in real engineering, and conforms to the environment-friendly sustainable development strategy concept of China.

The invention discloses a method for resource utilization of industrial copper-containing wastewater. A sulfur-containing precipitant and additives are added to the copper-containing wastewater, and free copper ions are converted into solid precipitation for precipitation, and the wastewater containing solid precipitation or solid precipitation is used for The removal of mercury, in which the copper in the solid precipitation and the copper ions attached to the surface of the precipitation cooperate to activate and oxidize the mercury in the mercury-containing flue gas or mercury-containing wastewater, and because of the strong affinity between elemental sulfur and mercury Sulfur in solid precipitation can fix the activated and oxidized mercury into stable mercury sulfide, realize the removal of mercury, and effectively reduce the copper content in wastewater. This method realizes the effective removal of mercury in the flue gas, and at the same time solves the environmental problems caused by copper-containing wastewater, treats waste with waste, turns waste into treasure, is green and sustainable, has low cost of mercury removal, high efficiency, simple process, and is suitable for It provides a new way of thinking for the resource utilization of industrial copper-containing wastewater.

The invention discloses a pulverized coal forming and dry distillation method employing a waste as a binder. The method comprises the following steps: crushing and sieving coal to obtain pulverized coal; heating water to 80-100 DEG C, mixing and fully stirring heavy coal tar pitch, a tar residue and polyaluminum ferric chloride in sequence, fully stirring, pouring a mixture to dolomite powder when the mixture is softened, heating and stirring the dolomite powder into a sticky paste material to obtain the binder; carrying out cold press molding on the mixture obtained by compounding the prepared binder and the pulverized coal in a forming mould at a pressure of 8-20MPa to obtain briquette coal; carrying out low-temperature pyrolysis on the prepared briquette coal product in a dry distillation furnace at 500-750 DEG C for 2-4 hours to obtain semi-coke, coal tar and a coal gas. According to the method, a feasible way is provided for semi-coke production in short of raw lump coal, the problem that the tar residue of a factory cannot be effectively utilized is solved to the maximum extent; and the coal tar in the tar residue is completely squeezed, the oil yield rate of the briquette coal is improved and refuse reclamation is achieved, so that the utilization value of the pulverized coal is improved.

The invention proposes a steel slag-cyanide tailings cementitious material and its preparation method and application. The steel slag-cyanide tailings cementitious material is composed of the following substances in mass percentage: 30-60% of iron-selected waste slag, 10-20% of aerated concrete waste, 15-25% of calcium carbide slag, and 10-30% of desulfurized gypsum %. Carbide slag is calcined, cooled naturally, and ground; aerated concrete waste is crushed, dried, and ground; after desulfurization gypsum is ground, it is mixed with steel slag-cyanide tailings iron selection waste in proportion to prepare steel slag-cyanide tailings cementitious material. The cementitious material is mixed with portland cement to prepare steel slag-cyanide tailings cement. The preparation method of the invention is simple and easy to implement, can realize the coordinated utilization of various wastes, increase the added value of the wastes, reduce the production cost of cement, and has good social and economic effects.

The invention discloses an application of farnesol in preventing and treating the smut disease of sugarcane and corn. According to the application of farnesol in preventing and treating smut disease,the life history of sugarcane smut can be affected. Farnesol has better inhibiting effect on the germination of teliospore, the proliferation and growth of basidiospore and the sexual cooperation. Theformation of the binuclear mycelium can be effectively blocked, the sugarcane can not be normally infected with sugarcane smut, and the occurrence of the smut disease of the sugarcane can be effectively inhibited; the proliferation and growth of corn smut can be affected and the occurrence of corn smut can be inhibited.

The invention discloses an alkali-activated cementing material for 3D printing and a printing method of the alkali-activated cementing material. The alkali-activated cementing material consists of the following raw materials: industrial wastes, an alkali activating agent, fine aggregates, a defoaming agent, a water reduction agent, water, coarse aggregates, high-strength fiber and a micro nano material. A prepared slurry mixture is fed by two pumps and is printed and molded in a 3D printing mode. The problem that 3D printing concrete is low in early strength is solved, and the slurry properties of the alkali-activated cementing material are effectively improved; as the slurry is fed by two pumps, the problems that the alkali-activated cementing material is high in condensation rate and not applicable to 3D printing are solved; and due to doping of various fibers, final pressure and bending resistance of printed concrete is greatly improved.