15results about How to "Pollution control" patented technology

The utility model belongs to the technical field of roadway dust removal, and relates to an air flow purification device of a fully-mechanized face air return crossheading, which comprises a frame type component, a lifting component, a lower rotating component, an upper rotating component and a spraying component, the frame type component is used for allowing an operation vehicle to pass through, and the lifting components are arranged on the two sides of the frame type component and used for achieving lifting of an upper structure in the frame type component; a spraying component is arranged in the middle of the upper structure of the frame type component and used for treating dust in an area where a vehicle passes through. The rotating lower part is hinged with one side of the lower structure of the frame type part, and the spraying part is arranged at the upper part of the rotating lower part; the rotating upper part is hinged to the side, close to the rotating lower part, of the upper structure in the frame type part, and a dust catching net is arranged between the rotating upper part and the frame type part. Sufficient passing space is provided for vehicles, obstruction of a traditional dust catching net to traffic is avoided, different roadway heights and environment conditions can be flexibly adapted, and the stability of the treatment effect is ensured.

The utility model relates to a material recovery device which is characterized in that when a negative electrode material needs to be recovered in the actual negative electrode material processing process, a vacuum feeding machine can be operated, the negative electrode material is collected by a material suction pipeline of the vacuum feeding machine, and the negative electrode material is sucked into the vacuum feeding machine through the material suction pipeline; then the feeding port of the ton bag penetrates into the position between the feeding barrel and the clamping ring, the linear driving part is operated to drive the clamping ring to ascend through the lifting plate, the clamping ring and the fixing ring are matched with each other to clamp the feeding port of the ton bag, and then a valve in the vacuum feeding machine is operated to clamp the feeding port of the ton bag. The negative electrode material in the vacuum feeding machine enters the ton bag through the feeding port of the ton bag to be recycled, then the clamping ring is driven to descend, and the ton bag is taken out, so that the negative electrode material can be better conveyed, flying dust is reduced, material loss is avoided, the processing environment is prevented from being polluted, and the health of operators is prevented from being affected.

The invention discloses a rice-wheat rotation area liquid manure efficient returning planting method, which comprises the following steps: step 1, precisely metering and applying liquid manure subjected to innocent treatment, step 2, precisely applying the liquid manure by stages according to the fertilizer requirement rules of rice and wheat in different growth periods, and step 3, performing returning operation by combining injection type deep application and movable sprinkling irrigation equipment. 4, carrying out matched management after the liquid manure is applied; 5, carrying out a dynamic management closed loop of measurement, calculation, determination, application, monitoring and regulation; through system implementation and dynamic closed-loop management of three precise dimensions of opportunity, method and proportioning, ammonia volatilization and nitrogen and phosphorus runoff loss are greatly reduced, agricultural non-point source pollution is effectively controlled, soil organic matter is stably increased, chemical fertilizer investment can be remarkably reduced through precise replacement, the production cost is reduced, and the economic benefit is increased. Meanwhile, fertilizer utilization rate is increased, annual yield of rice and wheat is increased, and income is increased.

The application discloses an AnDMBR dynamic membrane assembly for sludge anaerobic digestion, which comprises a sealed membrane frame, a plurality of flat plate membranes and a plurality of detachable aeration pipes; the sealed membrane frame is used for bearing various components of the AnDMBR dynamic membrane assembly and is in the shape of a cuboid composed of a stainless steel grid; the plurality of flat plate membranes are arranged in parallel and equidistantly in the sealed membrane frame; a membrane water outlet is arranged above the flat plate membranes, and the height of the membrane water outlet is higher than the upper surface of the sealed membrane frame; the gap between the plurality of flat plate membranes is filled with conductive particles; the plurality of detachable aeration pipes utilize the circulating biogas from the air guide holes to form a cross flow on the surface of the flat plate membranes and disturb the conductive particles between the flat plate membranes. The application effectively solves the problem of flat plate membrane surface mud cake deposition caused by the operation of AnDMBR at high sludge concentration, prolongs the service life of the dynamic membrane assembly, and improves the anaerobic digestion performance of the reactor.

The application discloses an automatic conveying device, relates to the material conveying technical field, and improves a series of requirements and problems such as long distance, large conveying capacity and high efficiency, maximally reduces labor and material waste, and improves production efficiency, and comprises a hopper, a plurality of standard spiral conveying pipes, a plurality of series joints and a discharge port. The conveying device is assembled by a plurality of standard units, so that the conveying equipment is more miniaturized and simplified, equipment installation, dismounting and transportation are facilitated, different working environments and conditions can be adapted, power output of the conveying device is more stable and efficient by adopting a decentralized arrangement form, the conveying device can realize longer distance transportation, meanwhile, the conveyed materials are transported through a closed pipeline, so that the materials can be prevented from being accidentally spilled, personnel casualty and property loss are avoided, and the conveying device has higher safety. In addition, sealed transportation can effectively control dust pollution, irritating smell and the like, and has higher environmental protection.

This utility model relates to a point source pollution purification device for river and lake management, comprising a base plate, a packing box, floats, and a housing. The housing is located on top of the base plate, and multiple floats are located at the bottom of the base plate. A main sewage pipe running left-right is located at the top of the housing. A pumping assembly connected to the right end of the main sewage pipe is located on the right side of the housing. Several branch sewage pipes running front-back are evenly arranged along the length of the main sewage pipe at its bottom, and outlets are evenly arranged along the length of the branch sewage pipes at their bottom. Several packing boxes are evenly arranged along the left-right direction below the branch sewage pipes within the housing. The side walls of adjacent packing boxes are tightly fitted together, and the inner wall of the housing is tightly fitted to the side walls of the packing boxes. Water passage holes are evenly arranged at the top and bottom of each packing box. A drain outlet aligned with the bottom of the packing box is located at the bottom of the housing, passing through the base plate. This utility model has the advantages of convenient installation and labor-saving cleaning.

This utility model discloses a catalyst collection and conveying device at the bottom of the riser pipe of a catalytic cracking unit, belonging to the field of petrochemical technology. It includes a frame platform with a first riser pipe and a second riser pipe mounted on it. A collection hopper is fixedly connected to the bottom of both the first and second riser pipes. In this utility model, fallen catalyst dust is collected by the collection hoppers at the bottom of the first and second riser pipes. The collected catalyst dust is then driven to the inner cavity of a storage tank via a blower, a first electrically controlled valve, an exhaust pipe, a second electrically controlled valve, an upper guide pipe, and a lower guide pipe. The collection hoppers and closed conveying pipes prevent catalyst powder from floating around due to wind during discharge, effectively controlling dust pollution in the unit area, improving the working environment, and protecting equipment and personnel health.

The present application relates to the technical field of carbon black production, in particular to a kind of carbon black and its production process.The present application solves the problems of large viscosity of ethylene tar, incomplete cracking, poor dispersibility and surface inertness of carbon black.First, the raw oil is treated by decalin / NMP complex solvent and ultrasonic wave, then a ferrocene / potassium borate composite catalyst is added, and the double-stage atomization technology is combined with gradient temperature field for combustion cracking;In the reaction quenching section, the modified quenching liquid containing KH-550 and urea is sprayed in the specific temperature zone for in-situ grafting, and finally the finished product is obtained by alternating speed granulation and microwave fluidized drying;The prepared carbon black has the characteristics of high structure, high yield, low impurity and high surface activity, and has high application value in the field of rubber reinforcement and high-performance composite materials.

This invention discloses a method for nitrogen and phosphorus emission reduction through the synergistic application of amino acid-enhanced fertilizer and variable-rate spraying by drones. The method includes: acquiring NDVI / NDRE distribution maps using a multispectral drone before the rice tillering stage to generate a variable-rate fertilizer prescription map; preparing an amino acid-enhanced compound granular fertilizer containing urea, monoammonium phosphate, potassium fertilizer, compound amino acid powder, γ-polyglutamic acid, humic acid, and urease inhibitor, and applying it via drone according to the prescription map; acquiring multispectral information again before the rice booting or heading stage to generate a variable-rate spraying prescription map; preparing an amino acid-nitrogen-phosphorus compound foliar fertilizer containing compound amino acids, urea, potassium dihydrogen phosphate, γ-polyglutamic acid, fucoidan oligosaccharide, and brassinolide, and applying it via drone according to the prescription map. This invention significantly improves nitrogen and phosphorus fertilizer utilization efficiency, reduces nitrogen and phosphorus concentrations in field surface water and runoff loss through the synergistic application of both broadcasting and spraying pathways, achieving fertilizer reduction and yield increase while controlling agricultural non-point source pollution at its source.

The application provides a metal monatomic photocatalyst, a preparation method and application thereof. The preparation method of the metal monatomic photocatalyst comprises the following steps: (a) adding metal chloride, polyvinylpyrrolidone and metal oxide powder into water, uniformly stirring continuously to obtain a precursor suspension, and centrifuging the obtained precipitate to obtain a precursor material; (b) washing the precursor material in step (a), and performing high-temperature calcination under a hydrogen atmosphere after drying to obtain the metal monatomic photocatalyst. The metal monatomic photocatalyst can rely on the synergistic regulation of energy band structure of double active sites of metal monatomic and oxygen vacancies, improve the light excitation capacity of the photocatalyst, and synergistically adsorb nitrate substrates, so that the activity and selectivity of the reaction of photocatalytic reduction of nitrate to synthesize ammonia are improved.

The present application relates to the field of medicinal plant tissue culture, and particularly relates to a Nitraria sibirica culture medium and a culture method and application thereof. The method comprises the following steps: S1. Sterile seedlings are obtained by sequentially treating Nitraria sibirica seeds with concentrated sulfuric acid and chlorine fumigation; S2. Hypocotyls of the sterile seedlings obtained in S1 are cut and inoculated on a callus induction culture medium; the callus induction culture medium mainly comprises: MS culture medium + 17-23 g / L sucrose + 1.5-2.5 mg / L 6-BA + 0.1-0.4 mg / L NAA; S3. The callus obtained in S2 is inoculated on a callus proliferation culture medium; the callus proliferation culture medium mainly comprises: MS culture medium + 17-23 g / L sucrose + 0.3-3.5 mg / L 6-BA + 0.5-3.5 mg / L NAA. The quality and survival rate of the tissue culture seedlings can be improved, and the production cost and environmental risk can be significantly reduced.

This invention discloses a polishing slurry, its preparation method, and its application, relating to the field of polishing slurry technology. The polishing slurry of this invention comprises silica abrasive, citric acid, and sodium citrate, with a pH < 7. It effectively controls metal ion contamination during the polishing process of synthetic quartz, improves the removal rate during the polishing of quartz glass substrates, and reduces the surface roughness of the quartz. It synergistically optimizes chemical corrosion and mechanical removal, achieving an atomically smooth, scratch-free, and subsurface-damage-free quartz glass substrate surface while maintaining a high material removal rate. Furthermore, it possesses characteristics such as low contamination, easy cleaning, and environmental friendliness.

The utility model relates to packing equipment technical field, concretely is a kind of meat food packing equipment with self-sterilization function, including bottom cabinet, bottom cabinet top is fixedly connected with packing cabinet, and bottom cabinet top end and located packing cabinet inside bottom is fixedly connected with conveyer belt, and conveyer belt top is equipped with several equidistant distribution's tray, and the left and right sides of conveyer belt top and located packing cabinet inside are respectively provided with infrared emitter and infrared receiver, and the above of conveyer belt and located packing cabinet front is equipped with sterilization mechanism, and packaged food is conveyed to the bottom of scanner by conveyer belt, at this time, electron gun starts, the low-energy electron of emission is accelerated into high-energy electron, subsequently scans on the packaging bag of meat food by scanner, by the mode of radiation, improve penetration, can be in-depth inside sterilization, and no residue, ensure that the bacteria generated in the process of re-packaging is exterminated, to effectively control the microbial pollution in the process of meat packaging, prolong shelf life and guarantee food safety.

The invention relates to the field of flue gas purification product resource utilization and coal rock gas yield increase and injection increase, in particular to an alkaline desulfurization and denitrification agent and application thereof in coupling of a flue gas resource desulfurization and denitrification process and coal rock gas acidification yield increase and injection increase. The invention provides an alkaline desulfurization and denitrification agent, the alkaline desulfurization and denitrification agent contains camellia saponin and a crown ether ring structure, sulfuric acid, nitric acid and fluoboric acid mixed salt of the alkaline desulfurization and denitrification agent is generated after desulfurization and denitrification, the mixed salt is used for coal rock gas acidification, flue gas desulfurization and denitrification waste liquid can be recycled, and the desulfurization and denitrification cost can be recovered; in addition, a bis-imidazoline alkaline desulfurization and denitrification agent containing crown ether and camellia saponin is combined with plasma irradiation oxidation to perform desulfurization and denitrification on the flue gas, and the desulfurization and denitrification waste liquid is used for reservoir transformation, so that environmental pollution can be better treated, one agent can be used for multiple purposes, the acidification cost of the carbonate reservoir is reduced, and slow acidification and diverted acidification are realized at the same time.

The invention provides a method for inhibiting generation of nitrosodimethylamine in the process of treating unsymmetrical dimethylhydrazine wastewater by ozone, and solves the problems that nitrosodimethylamine is easy to generate and difficult to thoroughly remove in the existing process of treating unsymmetrical dimethylhydrazine wastewater by ozone, and the pollution risk of large residual volume exists. The method specifically comprises the following steps: 1) controlling the concentration of unsymmetrical dimethylhydrazine in the wastewater to be 80-100mg / L, then adding a catalytic amount of manganese sulfate, and uniformly stirring; (2) adjusting the pH value of the wastewater obtained in the step (1) to 7-9, introducing ozone which is 6-8 times of the theoretical ozone dosage for complete degradation of unsymmetrical dimethylhydrazine into the wastewater, carrying out stirring reaction, continuously introducing ozone into the wastewater until the ozone content is 6-8 times of the theoretical ozone dosage for complete degradation of unsymmetrical dimethylhydrazine when the ozone content is reduced to 1 / 5 of the initial ozone content during the reaction, and continuously carrying out stirring reaction until the ozone content is reduced to 1 / 5 of the initial ozone content; the by-products in the wastewater are completely removed.