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 residual dredging water disposing method and device, which comprises the following steps: making residual dredging water flow mud discharge pool, mixing pool, cleaning pool; sedimenting solid particle of residual dredging water in the mud discharge pool; putting water in the PAC flocculant evenly; reserving the disposed residual dredging water in the cleaning pool to clean suspension and other pollutant; draining upper layer of clear water. The invention reduces residual dredging water SS density and additional PAC flocculant, which makes residual dredging water reach need of environment discharge.

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 an application of Na-type nano-montmorillonite in removing copper in pollutant, belonging to the technical field of heavy metal contaminated soil repair. The method is characterized in adding Na-type nano-montmorillonite into substance polluted by copper. When water is polluted by copper, the Na-type nano-montmorillonite is added into sewage, the dosage of the Na-type nano-montmorillonite is 3.34-6.67g.L-1, the Na-type nano-montmorillonite is balanced at the temperature of 23-27 DEG C for at least 24 hours, and copper ions in waste water can be removed by filtering after standing. When soil is polluted by copper, the Na-type nano-montmorillonite is added into polluted soil, wherein the mass percentage of the Na-type nano-montmorillonite to soil is 1.0-2.0%. Experiments prove that the Na-type nano-montmorillonite used by the invention has strong adsorbability on copper ions in aqueous solution, and the maximum adsorbance can reach 208.7mg.g-1; the addition of Na-type nano-montmorillonite can lower copper content in pakchoi stem leaves in polluted soil by 52.4-59.8% and lower copper content in pakchoi roots by 59.5-62.3%.

The invention discloses a soil treatment method for preventing and controlling plant parasitic nematodes. According to the method, the inside of soil is disinfected by the aid of liquid ammonia. The method includes the steps: 1) plowing greenhouse soil with serious parasitic nematode diseases to reach the depth no less than 20cm, and disinfecting the soil by the aid of liquid ammonia when water content of the soil is 30% or less; 2) covering the disinfected soil with films; 3) natural drying the soil for 7-10 days after the films are film uncovered after film covering is completed, planting crops after fertilizer applying and ridging are implemented, and performing conventional field management. Compared with other chemical disinfection methods, the method is safer, cheaper and free from toxicity, residue and environmental risk. The application amount of other nitrogen fertilizers can be reduced by the aid of disinfection of the liquid ammonia, the content of the nitrogen fertilizers in the soil is improved, the usage amount of other insecticides is reduced, and double effects of decreasing fertilizers and insecticides are achieved.

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 discloses an aquaculture water body efficient improver filling pad and a preparation method thereof, and relates to the field of aquaculture. The filling pad is a square pad composed ofa bottom layer and a surface layer which are sewn together, the square pad is provided with 6-10 divided filling units (1) through dividing lines (2), a feeding port (3) and a drawing rope (4) of thefeeding port (3) are arranged in the middle of each filling unit (1), and the square pad is filled with an improver (5) through the feeding ports (3). The improver (5) comprises activated carbon, zeolite powder, iron minerals, bacillus, photosynthetic bacteria and an adhesive. The filling pad can greatly reduce the contents of organic matters, ammonia nitrogen, nitrite, heavy metals and hydrogen sulfide in the aquaculture water body and increase the dissolved oxygen in the water body; growth and propagation of beneficial microorganisms in the pond are promoted, and decomposition of pollutantsby beneficial bacteria is accelerated; and digestion, absorption, growth and development of aquatic animals are promoted, and economic benefits are increased.

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 provides a method for remediating rare earth contaminated soil by combining plant intercropping with rhizobium. The method comprises the following steps of: S1, constructing vegetation:sowing seeds of vegetation crops in a soil area to be remediated, wherein the vegetation crops comprise leguminous plants and paspalum plants, the leguminous plants are selected from at least one of albizia plants, sophora plants and ormosia plants; S2, inoculating rhizobium: after the leguminous plants emerge for 5-15 days, adding rhizobium into root system soil of the emerged leguminous plants;and S3, transferring a hyperaccumulator: harvesting the plant part, exposed out of the ground, of the vegetation crops when the average plant height of the leguminous plants reaches 1.2-1.5m. The method is suitable for remediation treatment of rare earth waste residue storage sites like rare earth mines, stopes and various waste rock piles and tailing piles, and has the advantages of fast construction, low cost, easy and convenient operation and management, high remediation efficiency, small environmental risk, environment beautifying and the like.

The invention relates to a preparation method of a compound immobilized biological adsorbent. The preparation method comprises the following steps: inoculating nitrogen cycle bacteria spore suspensioninto sterile modified diatomite and sodium alginate suspension liquid in a mass ratio of 10 to (1-15) so as to form mixed liquid, adequately and uniformly mixing, so as to obtain a mixed solution, wherein the inoculation amount in each milliliter of the mixed liquid is 0.1mL-1.0mL; dropwise adding 1 volume of the mixed solution into 2-8 volumes of a sterile CaCl2 solution, and standing, so as toobtain reaction liquid containing modified diatomite-calcium alginate-nitrogen cycle bacteria microspheres; and carrying out immobilization culturing on the modified diatomite-calcium alginate-nitrogen cycle bacteria microspheres, so as to obtain the compound immobilized biological adsorbent. The compound immobilized biological adsorbent prepared by virtue of the preparation method has the advantages that the nitrogen and phosphorus removal effects are good, the adsorption capacity is high, the adsorption speed is high, the cost is low, and the compound immobilized biological adsorbent has noenvironmental risk and is economic, environment-friendly, clean and pollution-free and the like.

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 discloses a comprehensive process technology of solid waste in an alumina plant, belonging to the technical field of solid waste processing. The technology blends the solid waste after sand-extraction and iron-extraction or solid waste to directly with carbide slurry or milk of lime, liquid or solid caustic soda, follow-up alkali liquor and the like and mainly utilizes the digestionprocess with high temperature and high caustic ratio to change the slag phase of the red mud, so as to realize efficient recycling of alumina and sodium oxide and to realize systematic circulation bymating with sedimentation and separation, evaporation and concentration, crystallization separation of sodium aluminate and the like. The solid waste is red mud, tailings or low-grade aluminium ore in the aluminium plant. In the technology, the recovery rate of alumina in the solid waste can reach 60%-90% and the recovery rate of sodium oxide can reach over 90% with notable benefits; the alkali in the solid waste can be reduced to below 1%, reaching the basicity range of alkalis soil; after filter pressing, the invention can be used as soil directly without environmental protection risks, thus realizing waste resource utilization and environmental friendliness in deed.

The invention discloses a method for remediating soil contaminated by heavy metals such as cadmium by combining in-situ leaching, deep-layer fixing and phyto-extracting. According to the method, the heavy metals are leached into a deep layer along with a leaching solution through the in-situ leaching in a surface layer and are fixed in the deep layer, then willow with the heavy metal accumulation function is planted after organic fertilizer is applied, and therefore the residual heavy metals can be further removed, and the soil function can be restored; the heavy metals in a plough layer are leached to the deep layer, the absorption of crops to the heavy metals is reduced, the heavy metals which are leached to the deep layer are fixed, underground water is not polluted, and therefore the residual heavy metals can be further removed through phytoremediation, and the soil function can be restored; an iron-containing compound used in the method does not destroy the soil structure and can serve as a rice field soil conditioner; and compared with the phytoremediation, the method has the advantage that the remediation efficiency can be improved, and compared with leaching remediation, the method has the advantage that the steps of excavating, stirring, separating and the like can be omitted. The invention provides the remediation method. The remediation method has the advantages of being short in time, low in cost and high in efficiency and having a wide application prospect in the field of remediation of a large-scale farmland contaminated by the heavy metals.

The present invention relates to a method for calculating and rationally utilizing the theoretical model of fly ash resource utilization, comprising the following steps in sequence: A. Harmless treatment: collecting fly ash raw ash particles, and using PCSB curing agent to make the fly ash into a paste material After solidification, fly ash blocks are obtained; B. Drying: dry the solidified fly ash blocks to a moisture content of 15% to 20%; C. Crushing: crush the solidified fly ash blocks to less than 18 mesh, Solidified fly ash powder particles with a particle size of 0.9mm to 0.075mm or less; D. Blending: collect solidified fly ash powder particles, and mix solidified fly ash powder particles with a weight percentage of 2% to 10% into the concrete. The utilization method of the present invention can absorb a huge amount of fly ash, and can thoroughly solve the landfill construction landfill and environmental problems of fly ash; the single series of building material products formed have simple process, excellent performance, and lower overall cost than current products , not only easy to popularize, but also has no environmental risk, and has very significant social and economic benefits.

The invention belongs to the field of pollutant removal, and specifically discloses a method for using magnetic media to strengthen the collection of heavy metals in a desulfurization tower and an application thereof. Specifically, the method is to add a magnetic medium to the flue gas at the entrance of the desulfurization tower to promote the enrichment of heavy metals in the flue gas on the magnetic medium in the form of heterogeneous condensation or chemical adsorption; The spray layer and the magnetic adsorption layer are discharged from the outlet of the desulfurization tower, so as to intercept and capture the magnetic medium rich in heavy metals by using the dual functions of the spray droplets and the magnetic adsorption layer, so as to realize the removal of heavy metal pollutants in the flue gas. Enhanced capture. The invention can realize the enhanced capture of heavy metal pollutants in flue gas, avoid secondary pollution caused by powder escape, has high overall removal efficiency, strong safety and no environmental risk, and has the advantages of simple process flow and low operating cost. At the same time, it will not have a negative impact on the working status of the desulfurization system.

The invention discloses the preparation and application of a microbial agent for degrading quinclorac. The microbial soil remediation agent comprises Paecilomyces lilacinus, and has relatively good degradation effects on quinclorac. The strain can degrade mulching films and prevent and treat rhizosphere nematode, multiple effects of the strain can be exerted when the strain is used to solve the problem of residual phytotoxicity of quinclorac, and no environmental risk exists. The microbial agent is a pure microbial preparation, and is high in safety and free of secondary pollution.

The invention discloses a water quality regulating agent for a rice-shrimp co-cropping system and a preparation method thereof, and relates to a regulating agent in the field of aquaculture. Components and weight percentages of the regulator: 1) Main components: macromolecular natural organic matter: 2-5%; aluminum-containing minerals: 40-45%; calcium-containing minerals: 20-25%; acid salts: 5-10% %; 2) Additional components: binder: 5-20%; foam: 0.1-0.5%; moisture: 5-15%. The regulating agent can greatly reduce the organic matter, nutrients and heavy metals in the water body during the co-cropping of rice and shrimp, increase the dissolved oxygen in the water body, improve the water quality, create conditions for the healthy growth and development of crayfish, and ensure the economic benefits of the co-cropping system of rice and shrimp. Compared with the traditional treatment method of applying materials, this regulator has high efficiency in improving water quality, is ecological and environmentally friendly, and has no environmental risks.

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 discloses a soil treatment method for preventing and controlling plant parasitic nematodes. The method is to utilize liquid ammonia to disinfect the inside of the soil, comprising the steps of: 1) plowing the soil of facilities with serious parasitic nematode diseases to a depth of not less than 20 cm, and performing liquid ammonia disinfection treatment when the soil moisture content is below 30%. ; 2) The soil after the disinfection treatment is covered with film, (3) After the film-covered treatment is finished, it is naturally dried for 7-10 days after the film is removed, and the crops are planted after fertilizing and making a border, and conventional field management is carried out. Compared with other chemical disinfection methods, the method is safer, cheaper, non-toxic, non-residual, and has no environmental risk. At the same time, liquid ammonia disinfection can reduce the application of other nitrogen fertilizers and increase the nitrogen content of the soil; at the same time, it can reduce the use of other chemicals and achieve the double effect of weight loss and drug reduction.

The present invention relates to a process for the preparation of a storage-stable mixture comprising an MDT silicone resin having hydroxyl groups and an organic compound containing at least one epoxy group.

The invention discloses a spraying agent for reducing cadmium absorption of tobacco in soil, and preparation and use methods thereof. The spraying agent is prepared by adding a zinc salt into a mercapto-containing soluble organic acid solution obtained after plant straw fermentation. A Zn-organically complexing type spraying agent can make a cadmium content in tobacco leaves in cadmium pollution soil reduce 56.6-60.3%, and can make a cadmium content in tobacco stems reduce 46.7-54.8%.

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.

The invention relates to a process for preparing a storage-stable mixture comprising an MDT silicone resin containing hydroxyl groups and an organic compound that contains at least one epoxy group.