25results about How to "Reduce pollutant content" patented technology

The invention discloses a method for harmlessly treating lithium slag and preparing a water-stable material from the treated lithium slag. The method comprises the following steps: crushing the lithium slag; mixing a sulfuric acid-containing material with the crushed lithium slag to obtain a pulpified mixture; roasting, and carrying out chemical modification to obtain roasted slag; adding a material containing activated aluminum oxide into the roasting slag to obtain a mixed material; the mixed material is subjected to water leaching and filtering, and leaching residues and leaching liquid are obtained; and drying the leaching slag, adding an exciting agent, and grinding to finally obtain the detoxified lithium slag. And preparing the water-stable material from the detoxified lithium slag. Under the condition of effectively improving the quality of the cement-stabilized layer, the lithium slag resource is effectively utilized, the resource utilization rate is improved, and the mechanical strength and corrosion resistance of the cement-stabilized layer concrete can be effectively improved by matching with the exciting agent and the curing agent.

The invention relates to the technical field of solid waste treatment, in particular to a phosphogypsum source harmless treatment method. Washing the tail section of the crystal growing slurry filtering system with clean water, and obtaining phosphogypsum after washing, wherein the ratio of the water consumption of the clean water to the phosphogypsum is (1: 10)-(1: 1) cubic / ton; performing size mixing on filter cloth washing water in a crystal growing slurry filtering system and the obtained ardealite to obtain ardealite slurry with the concentration of 20wt%-60wt%; adding a harmless treatment agent A into the obtained ardealite slurry, uniformly stirring and mixing, and reacting for 5-60 minutes to obtain first-stage reaction slurry; adding a harmless agent B into the obtained first-stage reaction slurry, uniformly stirring and mixing, reacting for 20-60 minutes, and filtering to obtain filtrate and harmless ardealite. The comprehensive recovery rate of fluorine and phosphorus valuable components in the wet-process phosphoric acid industry is realized through simple process improvement, and the pollutant content of the phosphogypsum after washing and filtering is reduced; according to the phosphogypsum harmless treatment method, the idea that industrial solid waste is used for treating pollution with waste is utilized, the agent preparation raw materials are wide in source and low in cost, and the agent is a toxic representative for solid waste pollution prevention and control cooperative control and assistant pollution reduction and carbon reduction synergistic interaction.

The invention relates to the technical field of flue gas purification and discloses a flue gas low-temperature adsorption, regeneration and purification system for realizing return balance of nitrogen oxides, the flue gas low-temperature adsorption, regeneration and purification system comprises a boiler, an adsorption and regeneration device and a regeneration rich gas circulating pipe, the boiler comprises a boiler body and a flue, and a hearth is arranged in the boiler body; the flue is communicated with the hearth to discharge smoke in the hearth, and the hearth is provided with a first combustion area with the temperature larger than or equal to 700 DEG C. The adsorption regeneration equipment is connected with the flue of the boiler. The inlet end of the regeneration rich gas circulating pipe is connected with the flue gas adsorption regeneration equipment, and the outlet end of the regeneration rich gas circulating pipe is communicated with the first combustion area of the hearth, so that the regeneration rich gas is conveyed into the first combustion area of the hearth. According to the flue gas low-temperature adsorption, regeneration and purification system for realizing the return balance of the nitrogen oxides, disclosed by the embodiment of the invention, the content of NOx in the system cannot be continuously increased, the NOx balance is realized, the regeneration rich gas treatment process is simple, the cost is low, and the boiler runs safely.

The invention belongs to the technical field of housing building steel structures, and discloses a housing building steel structure net rack welding device and process, the housing building steel structure net rack welding device comprises a workbench, the top of the workbench is fixedly provided with a fixing frame through a fixing block, through the design of a positioning mechanism, some housing building steel structure net racks of specific structures can be conveniently welded, and the welding efficiency is improved. A U-shaped or N-shaped house building steel structure net rack can be clamped and fixed, due to effective fixation, parts are not prone to moving or shaking in the welding process, an electric push rod of a positioning mechanism is started, the electric push rod pushes a power block to slide in a fixing frame, the power block slides on a supporting frame through a sliding block, and the power block moves along with movement of the power block. When the clamping blocks make contact with the steel structure net rack component, under the action of extension springs in the reset assemblies, the two clamping blocks rotate around the connecting points of the clamping blocks and the power blocks, and the component is gradually clamped.

The invention relates to treatment of tanning solid waste, in particular to application of a bacterium-enzyme synergistic process in tanning aldehyde solid waste treatment. According to the method, the fermentation liquor containing enterobacter asparagi and stenotrophomonas maltophilia, the alkaline protease and the alkaline lipase are used for synergistically degrading the tanning aldehyde tanning solid waste, so that the problems that high-temperature treatment is needed by enzymolysis in the prior art, and the added value of a degradation product is low due to small molecular weight are effectively solved; the method has the advantages of short treatment period, no need of high-temperature pretreatment, high added value of the product due to high molecular weight and the like.

The invention relates to a water-permeable brick for a water-permeable dam and the water-permeable dam. The water-permeable brick for the water-permeable dam comprises a brick body and an adsorption assembly which is arranged on the brick body and is used for adsorbing pollutants in a water body. According to the water permeable brick, the adsorption assembly is arranged in the brick body, pollutants contained in water penetrating through the brick body are adsorbed by the adsorption assembly, the content of the pollutants in the water penetrating through the water permeable brick is reduced, and therefore the water permeable brick has a high water quality purification effect. When the water-permeable bricks are laid on the water-permeable dam, the water-permeable bricks are used for covering the surface of the water-permeable dam, the water body is prevented from directly scouring the dam body of the water-permeable dam, and therefore the problem that the dam body structure is damaged due to water body scouring is solved through the water-permeable bricks. Due to the water permeable function of the water permeable bricks, the water permeable function of the water permeable dam is not affected, and the water permeable dam can have higher water quality purification capacity by utilizing the higher water quality purification capacity of the water permeable bricks, so that the water quality of a water body is improved, and the environment quality is improved.

The utility model discloses a roof rainwater purification and storage device. Comprising a first rain filtering system, a purifying system and a water storage purifying system. The first rain filtering system is composed of a rain down pipe, a water filtering box and a flow dividing pipe. The purification system consists of a planting cavity, a buffer layer, a planting layer and a filter layer; the water storage and purification system is composed of a box body, a supporting frame and bionic carbon fiber aquatic plants. Plants are planted in the planting cavity of the device to form a rainwater garden, initial rainwater purification of a roof can be achieved, the pollutant content of runoff rainwater can be effectively reduced, and the device has the functions of rainwater retention and storage and on-site purification and is suitable for source decentralized control and pretreatment of high-level catchment runoff rainwater pollution of the roof and the like; a graceful water ecological environment and urban landscape are built, and the urban livability is improved.

The invention provides a treatment method and system for lithium iron phosphate production kiln tail gas absorption waste liquid, and belongs to the field of wastewater treatment. According to the application, the waste liquid is flocculated and precipitated, the filter cake layer is prepared from biochemical sludge and lime to filter the waste liquid, the pH value of the filtrate is adjusted, anaerobic treatment and aerobic treatment are carried out, solid-liquid separation is carried out to obtain the clear liquid meeting the emission standard, and the biochemical sludge can be recycled. After the waste liquid is filtered by the filter cake layer, the COD (Chemical Oxygen Demand) is greatly reduced, the water becomes colorless and transparent and has no foul smell, and the biodegradability is obviously improved. On one hand, the waste liquid treatment process is greatly shortened, energy consumption and chemicals are saved, on the other hand, the treatment load of a biochemical system is remarkably reduced, stable operation of the biochemical system and standard discharge of waste liquid are guaranteed, the economical efficiency is good, and environmental protection is facilitated.

The invention discloses a worm and gear speed reducer easy to lubricate inside and an assembling method thereof, and belongs to the technical field of speed reduction equipment. The speed reducer comprises a shell, a worm, a worm gear and an integrated lubricating module fixed to the end face of the worm gear. The module comprises a spiral flow guide oil collecting piece, a multi-cavity centrifugal pressurizing piece and a dynamic injection orientation piece which are stacked in sequence. The spiral guide oil collecting sheet pumps lubricating oil at the starting moment by utilizing a spiral groove; a centrifugal blade and a throttling structure are arranged in the multi-cavity centrifugal pressurizing piece, and oil liquid is pressurized and purified through centrifugal force; and the dynamic injection orientation sheet synchronously rotates along with the worm gear and accurately injects high-pressure oil liquid to an engaging area of the tooth surface of the worm gear. Zero-waiting starting oil supply, low-speed active pressurization and dynamic precise lubrication are achieved, the lubrication efficiency and bearing capacity are remarkably improved, the service life is remarkably prolonged, the online self-purification function is achieved, the structure is compact, and reliability is high.

The utility model belongs to the field of carbonization equipment, and particularly relates to a biomass carbonization kiln. Which comprises a combustion chamber, a carbonization furnace and an incinerator which are sequentially communicated through pipelines, and is characterized in that flue gas treatment equipment is arranged between the carbonization furnace and the incinerator, and the tail end of the carbonization furnace is communicated with the incinerator through an afterburning pipe. The afterburning pipe introduces heavy combustible flue gas generated by the tail of the carbonization furnace into the incinerator through the adjustable induced draft fan part, and a more sufficient heat value can be provided for the incinerator.

The invention provides a rubber material, a synchronous belt and a preparation method and application thereof, and relates to the technical field of synchronous belts. The rubber material comprises the following raw materials: 95-100 parts of chloroprene rubber, 0.1-5 parts of butadiene rubber, 6-9 parts of a scorch retarder, 51-63 parts of a reinforcing agent, 0.2-0.5 part of an accelerant, 3-5 parts of an anti-aging agent, 4-6 parts of a dispersant, 5-7 parts of a plasticizer, 4-6 parts of a cross-linking agent and 4.5-6 parts of a tackifier, the accelerant comprises 3-methyl-2-thiazolethione, the plasticizer comprises dioctyl sebacate and oligomer ester, the anti-aging agent comprises 4, 4 '-diethylhexyl sebacate, and the cross-linking agent comprises 4, 4'-diethylhexyl sebacate. The reinforcing agent comprises carbon black, multiwalled carbon nanotubes and precipitated white carbon black, and the tackifier comprises hexamethylol melamine hexamethyl ether and coumarone resin. The prepared synchronous belt has the advantages of good antistatic performance, long service life, environmental protection and the like, and can meet the requirements of the synchronous belt for the computer optometry unit on environmental protection performance and long service life.

The invention discloses an electric vehicle wind power generation device, and relates to the technical field of wind power generation, the electric vehicle wind power generation device comprises a shell and a step-up gear box installed in the shell, the end part of an output shaft of the step-up gear box is fixedly connected with a blade shaft, and one end of the blade shaft penetrates to the exterior of the shell and is fixedly connected with an impeller; and the lubricating mechanism is positioned in the step-up gear box. By arranging the lubricating mechanism, lubricating oil in the step-up gear box can be sucked into the top of the second partition plate through a backflow pipe and a flow guide pipe; lubricating oil sucked from the bottom of the second partition plate can enter the first partition plate, the lubricating oil can flow back into the step-up gear box through the one-way valve, it can be guaranteed that all key components in the step-up gear box can be evenly lubricated through circulation of the lubricating oil, and friction and abrasion between the components can be reduced.

The utility model relates to the technical field of insulation board production, and discloses a novel cutting device for insulation board production and processing, which comprises a fixing frame, a collecting box is fixedly connected in the fixing frame, the upper part of the collecting box is fixedly connected with a first motor, and the output end of the first motor is fixedly connected with a rotating shaft; a gear is fixedly connected to the upper portion of the rotating shaft, racks are connected to the two sides of the outer portion of the gear in a meshed mode, a fixing plate is fixedly connected to the separated sides of the racks, a first sliding block is fixedly connected to the upper portion of the fixing plate, a workbench is rotationally connected to the upper portion of the gear, and a connecting plate is fixedly connected to the upper portion of the first sliding block. And the opposite sides of the connecting plates are fixedly connected with second clamping plates. According to the utility model, the insulation board can be kept flat in the processing process, the unstable product quality caused by deformation or distortion is prevented, the error of the insulation board in the processing process is reduced, and the processing precision of the product is improved.

The invention relates to escherichia coli for reducing the sulfur content of coal, a coal desulfurization method and application thereof, and belongs to the technical field of coal resource utilization. The Escherichia coli capable of reducing the sulfur content of the coal, disclosed by the invention, is an Escherichia coli 2065801 strain; the coal desulfurization method comprises the following steps: mixing coal and sulfuric acid, filtering, cleaning, precipitating and drying to obtain pretreated coal; and carrying out mixed culture on the pretreated coal and the escherichia coli liquid, filtering, drying and precipitating to obtain the desulfurized coal. The Escherichia coli 2065801 strain and the coal desulfurization method have the advantages that the operation is simple, the cost is low, the desulfurization energy consumption is low, the desulfurization efficiency is high, the method is green and environment-friendly, and secondary pollution cannot be caused.

The invention relates to the field of textile, and discloses a hemp fiber bleaching process, which comprises the steps of pre-acid treatment, water washing, alkali boiling-off, re-water washing, oxygen bleaching, third-time water washing and softening treatment. Through scientific and accurate process control, the whiteness of the bleached fibrilia reaches a high standard, fiber damage is reduced as much as possible, and high strength is kept. Compared with a traditional bleaching process, the method effectively solves the problem that the fiber strength loss is large in the bleaching process, the final finished product has better durability and attractiveness, meanwhile, through the reasonable softening treatment procedure, the softness of the jute fibers is remarkably improved, the hand feeling of the jute fibers is more comfortable and fine, and the spinnability of the fibers is enhanced. The linen fibers subjected to softening treatment can be efficiently blended with the cotton fibers, and the prepared cotton and linen blended yarn is excellent in cohesive force, softness and elasticity.

This invention relates to the field of papermaking technology, specifically to a high charge density composite retention and filtration aid, its preparation method, and its application. The invention uses montmorillonite as raw material, acidifying it with sulfuric acid and then treating it with 3-mercaptopropyltrimethoxysilane to obtain modified montmorillonite; subsequently, it is mixed with acrylic acid, 2-acrylamido-2-methylpropanesulfonic acid, and 10-undecenal, and polymerized under nitrogen atmosphere using sodium persulfate as an initiator to prepare polymer-modified montmorillonite powder; using linear corn starch as raw material, it is gelatinized and reacted with 3-chloro-2-hydroxypropyltrimethylammonium chloride to obtain cationic starch; the cationic starch is then compounded with polymer-modified montmorillonite to obtain a high charge density composite retention and filtration aid.

The invention discloses an environment-friendly textile printing and dyeing system, which relates to the technical field of textile printing and dyeing, and is technically characterized in that a printing and dyeing mechanism comprises a printing and dyeing box, a built-in printing and dyeing component and textile inlets and outlets arranged on two sides. Wastewater is collected to the ultrafiltration box through the collecting funnel for pretreatment, filtered by the ultrafiltration assembly in the box and then led to the temporary storage box through negative pressure. The temporary storage box is used for printing and dyeing through a water return pipe, a water pump and a filtering adsorption assembly to achieve water circulation. The ultrafiltration box is provided with a telescopic electric cylinder with a C-shaped flexible cleaning block to clean the ultrafiltration assembly, waste is concentrated in the middle of the cleaning block and discharged to a waste treatment system through a waste discharge pipe, and the waste discharge pipe is controlled by an electromagnetic valve. The system efficiently integrates printing and dyeing, wastewater collection, pretreatment, post-treatment and recycling, reduces emission, and improves the resource utilization rate.

The present invention discloses a simulation remediation system based on plant-enhanced microbial remediation, which relates to the technical field of soil pollution prevention and control, and includes a first sand box; the surface soil of the soil layer contained in the first sand box contains composite pollutants including organic pollutants and heavy metal pollutants; the first sand box is provided with a water inlet group and a water outlet group; a baffle is fixedly provided in the first sand box, and the baffle separates the surface soil of the soil layer into a plant microbial agent area and a plant area; a remediation microbial agent is added to the plant microbial agent area, and the plant microbial agent area and the plant area are both planted with the same hyperaccumulator plants; the plant microbial agent area and the plant area are both provided with the same monitoring well group, injection well group and extraction well group. It is used to explore the migration laws of various pollutants in soil and groundwater, test the remediation effect of plant-enhanced microorganisms, and realize real-time monitoring of various physical and chemical parameters in the soil remediation process.

The invention discloses a pit repairing material as well as a preparation method and application thereof, and belongs to the technical field of environment repairing materials. The mine pit repairing material is prepared from the fresh phosphogypsum, the storage yard phosphogypsum, the phosphorite tailings and the like, the purpose of recycling the phosphogypsum can be achieved, the stockpiling amount of the phosphogypsum can be effectively reduced, and therefore the problems of land waste and environmental pollution occurring in the stockpiling process are avoided. The mine pit repairing material prepared by adopting the preparation method disclosed by the invention is relatively low in pollutant content, and can effectively avoid adverse effects on the environment. The mine pit repairing material prepared by the preparation method has excellent mechanical properties, and can effectively ensure the stability of a repaired mine pit.

The invention discloses a landfill leachate non-membrane treatment process, and belongs to the technical field of landfill leachate treatment.The landfill leachate non-membrane treatment process comprises pretreatment, primary treatment, secondary treatment, deep treatment and aftertreatment, ozonation and hydrolytic acidification are combined in the primary treatment, organic pollutants in water can be reduced, and biodegradability can be improved; in the secondary treatment, iron-carbon micro-electrolysis and flocculent precipitation are combined, primary battery reaction, physical adsorption and flocculent precipitation have a synergistic effect, the content of organic matters and heavy metals in water is reduced, the pH value of the primary treatment liquid subjected to hydrolytic acidification can meet the water inlet requirement of iron-carbon micro-electrolysis, and the dosage of an adjusting agent is reduced. The short-cut nitrification-denitrification realizes high-efficiency denitrification of the secondary treatment liquid with low C / N ratio, reduces the ammonia nitrogen content of the leachate, the post-treatment effluent of the advanced treatment liquid meets the discharge standard, no concentrated liquid exists in the treatment process, and the operation cost is reduced.

The invention relates to the technical field of filtering devices, in particular to a cold rolling emulsion filtering device which comprises a base, the upper end of the base is fixedly connected with two sets of mounting plates, the sides, close to each other, of the two sets of mounting plates are jointly and rotationally connected with multiple rollers, and the outer sides of the multiple sets of rollers are jointly and rotationally connected with a filtering belt. A motor is mounted on one side of one group of rollers, one end of one group of rollers is fixedly connected with an output shaft of the motor, the upper ends of the two groups of mounting plates are jointly and fixedly connected with a mounting bracket, a discharging pipe is rotationally connected to the inner side of the mounting bracket, and a filtering mechanism is mounted on the inner side of the mounting bracket; a cleaning mechanism is mounted on the sides, close to each other, of the two mounting plates, separation of emulsified liquid and impurities is accelerated through mutual cooperation of a sixth straight gear and a discharging pipe, and through mutual cooperation of a sliding block and a sliding groove, the surface of the filter belt can be brushed and cleaned while the filter belt is scraped and cleaned by a cleaning strip.

This utility model discloses a purification and recycling device for Kathon production waste, relating to the field of Kathon production technology. The waste tank is connected to a plate and frame filter press, which is connected to a first distillation tank. The first distillation tank is connected to a salting-out tank, the inlet of which is connected to an ethanol tank. The outlet of the salting-out tank is connected to a filter, the filter to a second distillation tank, the second distillation tank to an extraction tank, the inlet of which is connected to an ethyl acetate tank, the extraction tank to an organic phase storage tank, the organic phase storage tank to a third distillation tank, and the third distillation tank to a CIT / MIT byproduct recovery tank. All devices are closely connected, and materials flow orderly within the system, avoiding the cumbersome material transfer and losses of traditional processing methods. This significantly improves waste treatment efficiency, greatly increases resource recycling rate, is environmentally friendly, and reduces production costs.

The utility model discloses a sewage collecting device for a garbage collection vehicle, and relates to the technical field of sewage treatment. The device comprises a rectangular weight measuring plate, wherein a sewage treatment mechanism, a stirring mechanism and a gas collecting mechanism are arranged on the rectangular weight measuring plate; the sewage treatment mechanism comprises a sewage tank fixedly mounted at the top of the rectangular weight measuring plate, a weight sensor is fixedly mounted on the back of the sewage tank, an activated sludge storage tank is fixedly mounted on the back of the sewage tank, a sludge inlet pipe is fixedly mounted at the bottom of the activated sludge storage tank, and the tail end of the sludge inlet pipe extends into the sewage tank; the outer wall of the mud inlet pipe is fixedly sleeved with a valve block, a first rotating shaft is arranged on the valve block and extends into the valve block and the mud inlet pipe, and a valve handle is fixedly installed on the outer wall of the first rotating shaft. By arranging the sewage treatment mechanism, the problem that the garbage collection and transportation vehicle can only collect sewage and cannot disinfect the sewage is solved.

The invention discloses an environment-friendly yarn sizing and dyeing method. According to the environment-friendly multifunctional starch slurry disclosed by the invention, due to the use of the environment-friendly multifunctional starch slurry, the discharge amount of wastewater is reduced, the content of pollutants in the wastewater is reduced, and the pollution to a water body is reduced. In addition, according to the method, by optimizing process parameters and equipment, the energy utilization efficiency is improved, the energy consumption is reduced, and the carbon emission is further reduced. Meanwhile, resource waste is reduced through recycling of waste materials, cyclic utilization of resources is achieved, and sustainable development of the textile industry is promoted. The cost of the environment-friendly multifunctional starch slurry is low, the production cost can be reduced, and the enterprise competitiveness can be improved. The optimized sizing and dyeing process improves the quality and performance of the yarn, improves the added value of the product, and increases the enterprise income. And in addition, the production efficiency is improved, the production period is shortened, the economic benefits of enterprises are further improved, and important application and popularization value is achieved.

The invention discloses a greening rainwater collection system and a construction method for a sponge city, which relate to the technical field of building engineering, and include a greening rainwater collection unit, a filtering unit and a storage unit, as well as a reuse unit and an intelligent control unit, which are sequentially laid in layers from the surface to the underground; the greening rainwater collection unit utilizes plant roots to fix flow and purify water, and collects rainwater from sidewalks, thereby improving the rainwater collection efficiency and water storage capacity of urban greening areas, while reducing urban waterlogging and runoff pollution; the filtering unit and the storage unit guide water to flow to a deep layer, thereby reducing surface runoff; the reuse unit optimizes rainwater collection, storage and utilization through greening irrigation, non-drinking water utilization and overflow discharge; the intelligent control unit reasonably controls water storage and water distribution based on weather forecasts and historical data, thereby ensuring that the water level of the storage unit is not lower than the minimum water level; the system can guide drainage or water storage during the rainy season, thereby solving the problem of urban waterlogging caused by heavy rains.