33results about How to "No environmental risk" patented technology

A process for preparing activated carbon by co-pyrolysis of municipal sludge and agricultural waste comprises the steps of mixing the agricultural waste and the municipal sludge in a certain proportion to obtain a mixture; heating the mixture at a certain temperature under the condition of air isolation, keeping the temperature for a period of time, collecting a solid product, and cooling; and pulverizing the solid product to obtain the activated carbon product. In order to obtain an activated carbon with higher absorptive capacity, a certain amount of nitrate can be added into the mixture. Because the agricultural waste can make up the low heat value shortcoming of the sludge, while the municipal sludge can solve the problems with the agricultural waste that the pyrolysis solid product is easy to flow away and difficult to store, the inventive process can not only solve the high energy consumption and high cost problems of the prior sludge incineration, pyrolysis and other heat treatment methods, but also can be used for environmental treatment to save energy and reduce emission.

The invention discloses a pesticide composition resisting plant viral diseases and application thereof. The composition is prepared from, by weight, 0.0001-1 wt% of a brassinolide compound, 0.1-30 wt%of a polysaccharide compound and 0.1-30 wt% of functional additives. Accordingly, the effect of resisting plant virus diseases is greatly improved, and crop diseases are reduced; the main ingredientsare biological pesticides, and the formed compound preparation is free of environmental risk, the effect of resisting plant diseases, especially virus diseases is significant, the applicable crop range is wide, the prevention and treatment effects are good, the dosage can be lowered, and production can be ensured to the maximum limit.

The invention discloses a single tin salt electrolytic coloring additive. The single tin salt electrolytic coloring additive comprises a complexing agent, a buffer agent, an antioxidant and a surfactant, wherein the antioxidant comprises ferrous sulfate; the single tin salt electrolytic coloring additive also comprises an auxiliary agent containing ferrous sulfate; the auxiliary agent comprises modified amino amide zinc phosphate. The single tin salt electrolytic coloring additive disclosed by the invention has good comprehensive performances, solves the problem that nickel must take part in the reaction in an electrolytic coloring process, and is stable in groove liquid and quick and uniform to color, and the cost can be lowered effectively. Moreover, the single tin salt electrolytic coloring additive is low-carbon, energy-saving and green and environment-friendly, and process and product quality consistent to those of a double salt system can be obtained.

The invention discloses a method for producing N375 carbon black from blended oil. Carbon black production raw material oil is composed of 50% of ethylene bottom oil, 20% of anthracene oil and 30% ofcoal tar through proportioning or 35% of ethylene bottom oil, 35% of anthracene oil and 30% of coal tar. The method has the technical effects that 1) the source of carbon black production raw materialoil is expanded, a part of coal tar series oil is replaced by ethylene bottom oil as the carbon black production raw material oil; 2) an oil formula is optimized and adjusted, control on internal indexes of carbon black is intensified, the product quality is improved, and the production cost is lowered; 3) the supply channels of the carbon black production raw material oil are expanded, a part ofother oil products are supplemented, the shortage of tar supply is alleviated, and a technical foundation for further reducing the cost of raw materials and increasing the benefits is made; and 4) carbon black raw material oil with stable supply sources and lower price is obtained, and stable operation of carbon black production equipment is ensured.

The invention discloses a pelteobagrus fulvidraco feeding pattern with different protein contents under various temperature and dissolved oxygen, and relates to a pelteobagrus fulvidraco feeding pattern in aquaculture. The feeding pattern is to monitor the water temperature and dissolved oxygen in the pond every day, when the mean water temperature TA and the mean dissolved oxygen DOA meet 23 DEGC<=TA<= 30 DEG C, and DOA >= 4mg/L, high protein content feed is fed, and low protein content feed is fed for the rest conditions; the protein content of the high protein content feed is 42% and the protein content of low protein content feed is 38%, both of them are palatable puffing feed. The pelteobagrus fulvidraco feeding pattern with different protein contents under various temperature and dissolved oxygen has extensive experimental basis and scientific basis to meet the nutritional requirements of the growth of pelteobagrus fulvidraco, and can reduce the cost of aquaculture effectively and reduce the waste of feed, and improve the economic benefit of aquaculture and effectively reduce the nitrogen emission in aquaculture water; the operation method is simple and clear, and has the prospect of demonstration and easy promotion.

The invention discloses an ecological purifying system for a pond water body. The ecological purifying system for pond water quality comprises a shading net, a floating island and terrestrial plants, wherein the shading net is used for planting vine floating plants, the floating island is used for planting plants which cannot grow in a floating mode, traction ropes are tied to the two sides of the shading net, and a plurality of seedling growing pots are arranged on the floating island. A biological floating bed technology based on a floating bed plant system disclosed by the invention has multiple advantages of small investment, easiness to manage, no environment risk, good economical effect and the like, so that the biological floating bed technology can attract attention and has wide application prospect in aquaculture water body restoration. Controlling culture water body pollution, maintaining water body ecology balance and achieving water body virtuous circle are imperative; thus, the ecological floating bed technology has important theoretical and practical significance in healthy development of Chongqing aquaculture industry and sustainable utilization of resources.

The invention provides a magnetic seed magnetization dry-separation process for extracting iron from sintering dust. The process comprises the following main process steps: carrying out weakly-magnetic iron extraction on sintering dust by using a fully-sealed spiral dry magnetic separator with a field strength of 2000 Oe; adding 5 to 10% of flyash magnetic seeds into weakly-magnetic tail dust, carrying out heating to 70 DEG C, then carrying out hermetic and powerful mixing and magnetization, and allowing iron ions to realize magnetic aggregation with the magnetic seeds as a core; and carryingout separation by using a fully-sealed spiral dry magnetic separator with a field strength of 3000 Oe, and combining a weakly-magnetic concentrate and a concentrate separated through magnetic seed magnetization to form a comprehensive iron ore concentrate with a grade of 55% or more, wherein the magnetic seeds are not recovered and used as a sintering accessory together with the iron ore concentrate, and tail dust obtained after iron extraction is used as a raw material for extraction of useful elements such as K and Pb. The fully-sealed weakly magnetic and magnetic seed magnetization separation process is adopted in the invention for iron extraction, so iron resources in the sintering dust are recovered as much as possible; and the produced iron ore concentrate without alkali metals is used as a sintering accessory, so the problem that cyclic enrichment of alkali metals influences blast furnace production is overcome.

The invention belongs to the field of soil remediation, and particularly relates to a cadmium activating agent for improving remediation efficiency of cadmium-contaminated soil in a solar greenhouse and application of the cadmium activating agent. The cadmium activating agent is prepared from the following components in parts by weight: 2 to 5 parts of glucose, 10 to 20 parts of ammonium bicarbonate, 10 to 20 parts of urea, 100 to 300 parts of sulfur powder, 50 to 100 parts of humic acid, 0.2 to 0.5 part of bacillus megaterium and 0.1 to 0.5 part of bacillus subtilis. The raw materials of thecadmium activating agent have no environmental risk, glucose, humic acid and the like in the components can provide precious carbon sources for soil microorganisms; ammonium bicarbonate, urea, sulfurpowder and the like are fertilizer sources for crop growth, and bacillus megatherium and the like can improve the effectiveness of soil phosphorus.

The invention belongs to the field of pollutant removal, and particularly discloses a method for intensifying heavy metal trapping in a desulfurization tower by utilizing a magnetic medium and application of the method. The method specifically comprises the following steps: adding the magnetic medium into flue gas at an inlet of the intelligent manufacturing equipment tower, and promoting heavy metals in the flue gas to be enriched on the magnetic medium in a heterogeneous condensation or chemical adsorption manner; and then the flue gas containing the magnetic medium sequentially passes through the spraying layer and the magnetic adsorption layer and is discharged from an outlet of the desulfurization tower so that the magnetic medium enriched with the heavy metals is intercepted and trapped by utilizing the dual effects of the spraying liquid drops and the magnetic adsorption layer, and thus the enhanced trapping of the heavy metal pollutants in the flue gas is realized. According tothe method, the heavy metal pollutants in the flue gas can be intensively trapped, secondary pollution caused by powder escape is avoided, the overall removal efficiency is high, the safety is high,no environmental risk exists, the method has the advantages of being simple in technological process and low in operation cost, and meanwhile the negative influence on the working state of a desulfurization system is avoided.

The invention belongs to the field of pollutant removal, and particularly discloses a particle input amount calculation method based on a selenium removal model, and application thereof. The method comprises the following steps: calculating the droplet speeds at different positions in a desulfurization tower, the relative speed of droplets and flue gas, the flue gas temperature, the droplet temperature, the trapping efficiency of droplet groups on particles and the number concentration of the particles; calculating the concentration of gaseous selenium entering the droplets at the ith positionin the desulfurization tower, obtaining the concentration of gaseous selenium in the flue gas at the ith position in the desulfurization tower, substituting the concentration into the steps for iterative calculation, repeating the process until the concentration of gaseous selenium at the outlet of the desulfurization tower is obtained, obtaining the concentration of granular selenium at the outlet of the desulfurization tower at the same time, calculating the selenium removal efficiency in the desulfurization tower by utilizing the calculation result, and further obtaining the particle inputrate in the selenium removal process of the desulfurization tower according to the calculation result. According to the invention, the quantity of the input particles can be ensured, so that gaseousselenium pollutants in the flue gas are fully condensed and are completely captured in the desulfurzation tower, and secondary pollution caused by escape of the particles is avoided.

The invention provides a treatment system and a treatment method for preparing ammonium nitrate. The treatment system comprises: a bioreactor which is used for preparing ammonium nitrite from ammonianitrogen through a biological nitrosation reaction; a chemical reactor which is used for preparing ammonium nitrate from ammonium nitrite through a chemical oxidation reaction, wherein a water outletof the bioreactor is connected to a water inlet of the chemical reactor. The invention provides a two-stage reaction system and method for preparing ammonium nitrate for the first time, and recyclingof wastewater containing high-concentration ammonia nitrogen is realized. The treatment system and method provided by the invention have the advantages of stable effect, automatic control, high reaction rate, no nitrogen loss or environmental risk and the like, and have very wide application prospects in the aspect of resource operation management of high-concentration ammonia-nitrogen-containingwastewater such as urine.