81results about How to "Solve emission pollution" patented technology

The invention discloses plant essential oil with an antibacterial effect as well as a preparation method and application thereof. The method comprises the following steps: (1) crushing plant raw materials, adding water and enzyme for carrying out enzymolysis to prepare an enzymolysis solution; (2) centrifuging the enzymolysis solution, collecting filtrate, putting the filtrate in a water storage tank, collecting filtration residues, putting the filtration residues in a material basket, and carrying out subcritical water extraction on the filtrate and the filtration residues to obtain an extraction solution; and (3) cooling, demulsifying and extracting the extraction solution, collecting organic layers, drying and removing organic solvents to obtain the plant essential oil. The method is simple in process and easy to operate; low-cost and pollution-free water is used as an extraction agent, so that the cost is greatly reduced; the consumption of organic extraction agents is reduced; the method is green and environmental-friendly; in addition, the method also has the characteristics of short time, high extraction efficiency, high extraction yield of essential oil, low energy consumption and high quality of prepared essential oil; the prepared plant essential oil has a super-strong antibacterial effect and wide in application prospect; the extraction yield of the essential oil is greater than or equal to 2.0% and is far higher than that of the existing extraction and separation techniques of the plant essential oil at home and abroad.

The invention discloses a method for reducing the potassium and sodium content in a vanadium extraction leaching circulating liquid, which comprises the following steps: the pH value in the vanadium extraction leaching circulating liquid is adjusted with acid to maintain the vanadium extraction leaching circulating liquid within the acidic range; the vanadium extraction leaching circulating liquid is heated and stirred; when the vanadium extraction leaching circulating liquid reaches a reaction temperature, a potassium and sodium removing agent is added in the vanadium extraction leaching circulating liquid to make the potassium and sodium in the vanadium extraction leaching circulating liquid react with the potassium and sodium removing agent; and when the reaction is ended, the vanadium extraction leaching circulating liquid is filtrated.

The invention discloses a resourceful treatment utilization method and device for livestock excrement. The method includes the steps that dry-wet separation is performed, organic fertilizer is produced through dry excrement fermentation, anaerobic biological treatment is performed, flocculent precipitation is performed, solid-liquid separation is performed, and organic water-soluble fertilizer is produced through reverse osmosis concentration; the device comprises a dry-wet separator, a fermentation tank, an anaerobic reactor, a flocculent precipitation tank, a solid-liquid separator and a reverse osmosis device. Dry-wet separation is performed on the livestock excrement, then separate treatment is performed, the dry excrement is finally made into the organic fertilizer, liquid excrement slurry is finally made into the organic water-soluble fertilizer, and obtained products are natural organic fertilizer and wastewater capable of achieving emission up to standards; a lot of organic matter contained in the livestock excrement is sufficiently utilized for preparing the organic fertilizer, the problem that during discharging of the livestock excrement, pollution is generated is solved, and both economic benefits and environmental protection benefits are achieved.

The invention discloses a production method for desalination and comprehensive utilization of seawater. The method comprises the following steps: permeating high- concentration seawater obtained after fresh water preparation through an ionic membrane, separating out specific ions, and making into various sea salt chemical products by adopting a heating and evaporation manner, thus realizing the comprehensive utilization of seawater, achieving zero emission and playing a positive role in protecting the environment. In the invention, inorganic double-decomposition reaction is carried out on fresh seawater containing magnesium sulfate and calcium sulfate to obtain corresponding calcium and magnesium products and fresh water, thus completely solving the problem of pollution emission. Furthermore, mother liquor after potassium production can be oxidized and distilled to obtain bromine products, and waste liquor after bromine production can be finally processed into the calcium and magnesium products, thus completely converting seawater into chemical products and further achieving the purpose of zero emission.

The invention discloses a method and device for preparing metal powder in an electro-deposition manner, and belongs to the field of an electrochemical technology and equipment. According to the method and device, electrolyte is electrolyzed by adopting graphite felt or carbon felt as anode materials; and the form and the size of the metal powder deposited at cathodes can be adjusted by adjusting working currents. According to the method and device for preparing metal powder in an electro-deposition manner, the graphite felt or the carbon felt, which has an extremely large specific surface area, is adopted as an anode, so that the anode can obtain great working currents under the condition that the electric current density is extremely small, and phenomena of"air curtain" and electrolytic corrosion of conventional dense anode materials can be avoided; and besides, the graphite felt or the carbon felt is easy to cut and can be spliced, so that the anode is extremely convenient to make; additionally, the electric current density of the cathode is increased, so that a cathode product is changed from compact into loose, the shape of the cathode product is changed from blocks or tablets into particles or powder, and in terms of form, the cathode product is changed from big to small, and a metal powder collecting mechanism is facilitated to continuously and automatically collect cathode metal powder.

The invention discloses a membrane and condensation combined oil-gas recovery system, comprising an oil storage tank (15) provided with a gas-liquid separator (2); a micro pressure sensor (1) is installed on a pipe between the oil storage tank (15) and the gas-liquid separator (2) , the gas-liquid separator (2) is connected with a liquid ring compressor (6) through an oil gas inlet pipe (17) provided with an air inlet solenoid (3a); the liquid ring compressor (6) is connected with a condenser group (7) through a pipe; the condenser group (7) is connected with a membrane assembly (9) through the pipe; the membrane assembly (9) is connected with the liquid ring compressor (6) through an oil gas exhaust gas return pipe (18) with a non-methane hydrocarbon detector (13); the oil gas exhaust gas return pipe (18) is provided with an exhaust pipe; and the permeation side of the membrane assembly (9) is connected with the liquid ring compressor (6) through an enrichment oil gas return pipe (19) with a vacuum pump (11). The membrane and condensation combined oil-gas recovery system has the characteristics of environment protection, high automatic degree, economy and efficiency.

The invention discloses an air source heat pump drying machine fully recycling exhaust waste heat. The air source heat pump drying machine fully recycling exhaust waste heat comprises a compressor, a first interior air heat exchanger, an exterior air heat exchanger, an expansion valve, a first electromagnetic valve, a second electromagnetic valve, a one-way valve, a gas-liquid separator, a temperature and moisture sensing component and a controller; an outlet of the compressor is connected with an interface on one side of the first interior air heat exchanger; an interface on the other side of the first interior air heat exchanger is divided into two branched circuits after being connected with the expansion valve; one branched circuit is sequentially connected with the first electromagnetic valve and the second interior air heat exchanger; the other branched circuit is sequentially connected with the second electromagnetic valve, the exterior air heat exchanger and the one-way valve; tail ends of the two branched circuits are gathered at the same position and are connected with one end of the gas-liquid separator; the other end of the gas-liquid separator is connected with an inlet of the compressor; the controller is electrically connected with the compressor, the expansion valve, the first electromagnetic valve, the second electromagnetic valve and the temperature and moisture sensing component. The air source heat pump drying machine fully recycling exhaust waste heat has the advantages of being energy saving, environment friendly and rapid.

The invention discloses a full-automatic impregnation cleaning line, which includes nine stations; the full-automatic impregnation cleaning line provided by the invention can 1) reduce production labor intensity and reduce occupational hazards to operators; 2) clean before solving The sewage discharge pollution problem caused by the waste water treatment system can reduce the discharge of waste water, turn the waste water into waste residue and discharge it, which is convenient for transportation and treatment. The actual waste water can reach within 3%-5% of the discharge; Infiltration and then cleaning turnaround time in the middle of assembly, greatly saving time, reducing manpower input and cost, can save more than 20% of production cost.

The invention discloses a method for preparing a desulfurizer for a thermal power plant by using waste Nan'an marble powder. The method comprises the following steps: collecting the waste Nan'an marble powder in a classification manner; homogenizing the waste Nan'an marble powder; adding the homogenized waste Nan'an marble powder, a dispersing agent and water into a clay machine and performing pre-dispersion; disintegrating and dispersing powder particles in a shear agitation tank by a high-concentration strong-dispersion method; using a high-frequency vibrating screen to filter so as to filter coarse particles in sawdust, adjusting the concentration of a marble powder slurry grout in a slurry storage tank after filtration; conveying the marble powder slurry grout to a desulfurizing absorption tower through a pipeline and performing flue gas desulfurization. The desulfurization efficiency of the desulfurizer provided by the invention is more than 95 percent; the production cost is reduced by above 30 percent; the problem of discharge pollution of stone powder is effectively solved; sustainable development of stone industries is guaranteed; great ecological benefit and economic benefit are achieved.

The invention relates to an environment-friendly curing agent for stabilizing soil, which can improve the bearing capacity of a subgrade. The curing agent for stabilizing the soil is characterized by comprising the following components in parts by weight: 2-18 parts of polyanionic cellulose, 2-6 parts of sodium sulfate or calcium sulphate, 12-50 parts of sulfonic acid, 2-53 parts of granulated blast furnace slag, 1-5 parts of neutral water glass and 38-150 parts of water. The curing agent for stabilizing the soil can remarkably improve the bearing capability of the cured soil and has good antiseepage effect and durability, and the situation of argillization can be reduced after the curing agent is soaked in the water; therefore, the environment-friendly curing agent is suitable for various construction pavements, in particular rural roads developed for travel and agriculture with the requirements of low cost, short construction period and fast effect. The environment-friendly curing agent not only improves the road construction quality, but also makes the material application and the construction process more environment-friendly, can be further applied to the base course and surface course of road and construction engineering and the fields of wind prevention and sand consolidation, canal seepage control, burning-free low-carbon environment-friendly bricks and the like, and is suitable for the semimechanical operation and the large-scale mechanical construction operation in country.

The invention discloses a method for synthesizing oxalate by CO gas-phase coupling. The regeneration technique in the invention is used for solving the problem that extra NO gas needs to be supplemented due to nitrogen loss caused by nitric acid generated in regeneration reaction. In the invention, NO and nitric acid react to provide NO2 gas to supplement nitrogen loss due to nitric acid generated by the regeneration reaction. The method can recycle the nitric acid generated in the regeneration reaction, so that the utilization ratio of NO is kept at 98% above; and meanwhile, the invention solves the problem of pollution of discharge of nitric-acid-containing wastewater generated by the regeneration reaction.

The invention discloses air purifying equipment based on a water rotating device. The air purifying equipment comprises a cabinet body and a booster fan and adopts a self-pressing water-rotating filtering method, wherein the water rotating device is arranged in the cabinet body and comprises the booster fan, an arc-shaped water baffle and a water returning groove; and the booster fan forms high-pressure air rotation at a hollow cavity in the cabinet, the high-pressure air rotation is combined with the arc-shaped water baffle to drive water flow in the water groove to rise, and the rising water flow falls back to the water returning groove due to self gravity so as to form water rotation. The air purifying equipment disclosed by the invention has the advantages that all substances are left in water when the polluted air is treated, so that clean air is exhausted; and the problems of dust emission and environmental pollution are solved, and the cost for treating organic waste gas can be greatly reduced.

The invention discloses a soil stabilizer.The soil stabilizer is characterized by comprising 30-50% of coal ash, 5-10% of slag, 5-10% of an activating agent, 0.5-1% of triethanolamine, 0.5-1% of a polycarboxylic acid compound, 0.5-1% of aliphatic series sulfonate, 2-4% of sodium sulfate, 28-50% of cement clinker and 0.5-2% of sodium fluosilicate.According to the soil stabilizer, a great amount of industrial waste is utilized, so that cost of raw materials is saved, and consumption of a traditional gluing material is reduced; the problems of industrial waste emission and environmental pollution are solved, and an active protection effect is achieved for the ecological environment.In the construction process of an overwet soil road foundation in a rainy and humid area, solidification of soil in a rainy season and overwet soil, the soil stabilizer is added easily, the process of tedding treatment is reduced under a certain circumstances, and the soil stabilizer is an ideal soil stabilizer.The soil stabilizer is simple in construction process and easy to operate, for soil in need of consolidation, according to the soil property, a certain amount of the soil stabilizer is added to soil and stirred to be uniform, compaction treatment is conducted under the optimum water content of the soil, and in other words, performance indexes such as the density degree and strength which are required by construction are reached.

The present invention provides potato juice drink and a preparation method thereof. Potatoes are peeled, the peeled potatoes are crushed, the crushed potatoes are subjected to color protection, the color protected potatoes are beat into pulp, the beat potatoes are sterilized, the sterilized potatoes are subjected to a rapid dehydration, the dehydrated potatoes are ultra-filtered, the ultra-filtered potatoes are heated and cured, the cured potatoes are filtered, and the filtered potatoes are blended to obtain the potato juice drink. The method produces potato starch and starch, at the same time further processes the discharged water from the potatoes into the edible potato juice, and solves the problem of excessive emission of waste water and environment pollution in the production field of the potato starch. At the same time, the potato juice drink can be used as the new drink and can also increase economic benefits.

The invention discloses a novel heat energy circulation Chinese frying furnace device. The device comprises a burner, a hearth, a hearth shell and a frying pan bracket; the burner comprises a combustion plate, a burner bracket and a gas mixing cavity; the bottom of the hearth shell is connected with a waste gas pipe; a heat return water tank is connected through a waste gas pipe; and a waste gas flue is arranged on the heat return water tank. The hearth, the burner and the whole frying furnace system are improved, so that the heat conversion rate of the frying furnace is increased, the oxygen supply in a combustion chamber is guaranteed, and the waste gas discharge pollution problem is solved; and meanwhile, high-temperature waste gas is reused to the greatest extent to effectively prevent such problems as diffusion of the temperature in the hearth.

The invention relates to the technical field of oil fume purification treatment and particularly relates to a kitchen oil fume purification treatment method and device. The treatment method comprises:(a) under the action of an induced draft fan, feeding oil smoke mixed pollutants into a rectifying chamber and separating a part of the oil and water, (b) feeding the flue gas without the oil and water into a UV photolysis device, carrying out photolysis purification and irradiating to crack the pungent flue gas through UV ultraviolet light beams, (c) filtering the flue gas and adsorbing oil fumeparticles through an activated carbon filter plate, (d) feeding the residual flue gas into an electrostatic oil fume purifier, ionizing and decomposing the flue gas under the action of a high-voltageelectric field and collecting and recovering the separated oil-water liquid, and (e) feeding the de-oiled flue gas into an adsorption filter and carrying out purification again, wherein the adsorption filter is prepared from a glass fiber paper and adsorbs residual oil and gas particles of the oil fume. The method and device can completely purify the oil fume in the kitchen and effectively solvethe problem of the oil fume emission pollution.

Disclosed is a H2-SCR system for reforming alcohol water steam into hydrogen. The downstream end of a DOC catalytic converter of an engine exhaust pipe is sequentially communicated with an alcohol water solution evaporation reforming hydrogen box, an H2-SCR reduction box and a sound eliminator; the alcohol water solution evaporation reforming hydrogen box comprises a box body, a tail gas passing pipe and an alcohol water solution evaporation pipe; a sealed cavity between the box body and the tail gas passing pipe is separated into an alcohol water steam chamber, a reforming hydrogen chamber and a hydrogen chamber through two screen-shaped baffles; the reforming hydrogen chamber is filled with an Ir-CeO2 catalyst and is provided with a temperature sensor; the hydrogen chamber is communicated with the tail gas passing pipe, and an alcohol water solution evaporation pipe is arranged in the tail gas passing pipe; an inlet of the alcohol water solution evaporation pipe is connected with a liquid electric metering pump through an alcohol water solution conveying pipe, and an outlet of the alcohol water solution evaporation pipe is located in the alcohol water steam chamber; molecular sieve based catalysts and an NOx concentration sensor are arranged in the H2-SCR reduction box; and the NOx concentration sensor, the temperature sensor and the liquid electric metering pump are all electrically connected with a controller.

The invention relates to a hot press forming device, in particular to an environment-friendly energy-saving heating system for a hot press. The environment-friendly energy-saving heating system comprises a hot press and a heating device. The hot press comprises an upper supporting plate, a lower supporting plate, a hot press frame and heating plates installed between the upper supporting plate and the lower supporting plate. The two ends of the heating plates are provided with heat conduction oil inlets and heat conduction oil outlets. The heat conduction oil inlets and the heat conduction oil outlets are connected with heat conduction oil bypass pipes fixed on the two sides of the hot press frame. Heat conduction oil enters one heat conduction oil bypass pipe through the heat conduction oil outlets of the heating device, passes through multi-layer heating pipes and then is collected into the heat conduction oil bypass pipe at the other end, and returns to the heating device from the heat conduction oil inlets under the driving of a circulating pump. The heating device is formed by a heating box and a telescopic bag which are communicated with each other up and down. The environment-friendly energy-saving heating system solves the pollution discharge problem of coal-fired wood-fired boilers; the time problem in cold press plate machining is solved and the working efficiency is improved; the problem of expansion of the heat conduction oil in the heating process is solved, the potential safety risk is reduced, and the device safety is improved.

The invention relates to a recovery method for waste gas of a refinery plant sewage tank, which is used for sewage disposal of refiner plant sewage tanks. The invention discloses (1) a construction procedure of a recovery device for waste gas of a refinery plant sewage tank; and (2) normal operation (all indexes are set according to DCS); segmental automatic control on pressure at the top of the tank (all indexes are set according to DCS); and an instrument control scheme. According to the invention, after top and tail gas of an atmospheric storage tank are pressurized, the top and tail gas is introduced to a low pressure gas flare system of a refinery plant, enters a sewage tank due to self pressure to adjust pressure, and is pressurized together with a condensate separated from a gas-liquid separation tank in a pressurizing water pump, so as to be used as the power source of an injection pressurizer, thus replacing the functions of a steam power source, achieving the purpose of zero emission, solving the difficulties of the atmospheric storage tank that operation pressure is low and operation elasticity is small, and being safe and reliable in operation, less in one-time investment and low operation cost.

The invention provides a hydrogen energy power overhead line system maintenance operation vehicle for a railway. The hydrogen energy power overhead line system maintenance operation vehicle for the railway comprises a vehicle shed, a vehicle frame and a hydrogen fuel cell system, wherein the hydrogen fuel cell system comprises a hydrogen storage system, a protective cover, a fuel pile, an intake-exhaust system, a heat dissipation system, a control system and a hydrogen supply system. According to the hydrogen energy power overhead line system maintenance operation vehicle for the railway, the problems of emission pollution and noise pollution of a traditional internal combustion vehicle are solved, the problem that the endurance mileage of a pure battery vehicle is short is solved, and integrated application of a high-power hydrogen fuel battery system on the overhead line system operation vehicle is achieved; a foundation is provided for application of the hydrogen fuel cell system on other track engineering machinery, the hydrogen fuel cell system can extend to the upper part of a contact network, the back side of a stand column and other higher and farther positions, and the maintenance operation of an area A, an area B, an area C and an area D of the overhead line system is met; meanwhile, tunnel wall maintenance can be considered, and the advantages of large working platform space and large load capacity are achieved.

The invention provides a method for producing lime based on waste marble powder. The waste marble powder is collected in a classified mode, the collected waste marble powder is stacked in a classified mode in a stacking shed, detected and screened, then the waste marble powder screened and detected to be qualified is cleaned, dried and fed into a calciner to be calcined, the marble powder is decomposed into CaO and CO2 after being calcined by the calciner, waste heat is collected in the calcining process to preheat marble powder not calcined yet, lime generated after decomposition is cooled by a cooler, the cooled lime is treated with CO2, with a higher temperature, generated in the calcining process, and finally the treated lime is stored in a lime warehouse. By means of the method, the quality of the lime is improved; the technological process time for lime production is shortened, and working efficiency is improved; a layer of CaCO3 protective film is generated on the lime surface, the hygroscopicity of common lime is restrained, and thus the low-moisture lime can be obtained without drying to be used by a steel furnace.

The invention provides a composite profile made from a waste dry film and a preparation method thereof. The composite profile comprises, by weight, 25-35 parts of dry film fines, 35-45 parts of wastecircuit board resin powder, 5-20 parts of polyethylene plastic and / or dry wood powder, 5-10 parts of waste glass fiber reinforced plastic, and 10-15 parts of an auxiliary agent, wherein the dry film fines is obtained from alkali treatment on a waste dry film and contains no more than 3% by mass of colloid. Through resource utilization of the waste dry film, waste circuit board resin powder and waste glass fiber reinforced plastic, a composite profile with excellent mechanical properties is obtained. The composite profile has significant economic and social benefit.

The invention relates to alcohol alternative fuel. Concretely, yeast lipid is obtained by virtue of culture medium taking microbial fermentation illegal cooking oil, starch factory waste water and waste molasses as substrates; and a methanol gasoline additive is prepared by taking the yeast lipid as a main ingredient, wherein the additive contains a mutual dissolution-promoting and starting-assisting component, an anti-cylinder explosion anti-gas-blockage component, an anti-corrosion disperse colloid component, an accumulated carbon cleaning and oil product stabilizing component and a power-improving and combustion-promoting component in percentage by volume unit, and the functional components are uniformly stirred at normal temperature, so that the methanol gasoline additive is obtained;and methanol gasoline with low, medium and high methanol contents can be prepared from 10-80% of absolute methanol, 20-90% of gasoline and 0.1-0.5% of the additive. The methanol gasoline additive canbe used for solving the problem of discharge pollution of the illegal cooking oil, starch factory waste water and waste molasses and also can be used for solving the problems of shortage of domestic refined oil products, excess production capacity of methanol and ineffective utilization, and technical support is provided for popularization and application of methanol gasoline.

The invention relates to a methyl alcohol diesel additive based on yeast grease and methyl alcohol diesel prepared by using the same. The yeast grease is obtained by a culture medium using microorganism fermentation illegal cooking oil, starch factory wastewater and waste molasses as a substrate. The methyl alcohol diesel additive is prepared by using the yeast grease as a main ingredient. The additive comprises the following components in volume unit percent: an anti-layering hydrotropy component, an anti-corrosion anti-swelling component, a carbon-deposition-removing colloid-clearing component, a flashing-point-improving condensation-point-reducing component, and a power-improving combustion-promoting component. The methyl alcohol diesel additive is obtained by uniformly stirring the above functional components at a normal temperature. Methyl alcohol diesel with a high cetane number, a strong dynamic property, a high flashing point, and a low condensation point is prepared by 10-30%of absolute methanol or higher alcohols, 70-90% of diesel and 0.1-0.5% of the above additive. The methyl alcohol diesel is capable of solving emission pollution problems of the illegal cooking oil, the starch factory wastewater and the waste molasses, and solving problems that a refined oil product is lacked in China, capacity of methanol is excessive, and the capacity of methanol cannot be effectively used and the like.

The invention relates to a mobile-type tail-gas treatment process and device. The mobile-type tail-gas treatment device mainly comprises a condensation heat exchanger, a three-phase separator, membrane separation assembly, a vacuum pump, a heat exchanger, a catalytic oxidation reactor, a blower, an air supplement machine, a vortex flow meter, a concentration monitor, a fire barrier, a vacuum meter, and valves. According to the invention, through the heat exchanger and the three-phase separator, residual moisture is condensed, partial organics are dissolved in an oil phase for direct recovery, uncondensed and unabsorbed tail gases enter the membrane separation assembly, after separation is performed by the membrane separation assembly, the pollutant concentration of tail gases in the retentate side of the membrane separation assembly is reduced, discharging is directly performed after a standard is reached, dense gases at the permeate side of the membrane separation assembly are subjected to a low-temperature catalytic oxidation reaction, and discharging is directly performed after the treated dense gases reach the standard. The mobile-type tail-gas treatment process and device solve the pollution problems caused by discharge, and protect atmospheric environments.

The invention provides an energy-saving and environment-friendly furnace which comprises a furnace body, wherein the furnace body is provided with a gas inlet and a gas outlet, and the lower end of the gas inlet is provided with a combustor; and the furnace body is internally provided with a thermocouple which is used for controlling the combustor and connected with the combustor, and the tail end of the furnace body is provided with a catalytic combustion device. The energy-saving and environment-friendly furnace provided by the invention has the beneficial effects that organic solvent waste gas in a drying process is subjected to purification treatment so as to generate large amount of heat, and the heat is sent back to a drying room to recycled, therefore, the pollution problem caused by exhaust emission of the organic solvent is solved and the heat generated by waste-gas burning is fully utilized; and the energy-saving environment-friendly furnace has the advantages of simple structure, low waste gas treatment cost, energy conservation and environmental protection and the like.

The invention belongs to the technical field of plant oil extraction, and in particular relates to plant extract oil as well as an extracting method and application of the plant extract oil. The extracting method of the plant extract oil comprises the following steps: crushing a raw material, and mixing the crushed raw material, water and plant oil according to a certain ratio so as to obtain mixed feed liquid; carrying out supercritical CO2 extraction on the mixed feed liquid to obtain extract liquor; carrying out oil-water separation on the extract liquor by using a high-speed centrifuge soas to obtain the plant extract oil. The extracting method of the plant extract oil has the characteristics of being free from pollution, mild in conditions, free from residue during extraction and high in separation efficiency, and can effectively improve the production efficiency and the product quality.

The invention relates to an electric tractor wireless energy transmission power system and method. The electric tractor wireless energy transmission power system comprises an internal module and an external module, wherein the internal module is arranged inside a tractor body to achieve the functions of receiving alternate current energy generated by induction in an alternating magnetic field andpower supply of an overall power system; wireless energy transmission power receiving modules of the internal module are arranged at the front, in the middle or at the rear of the middle of the bottomof a tractor or at the front, in the middle or at the rear of the left and the right of the tractor; the external module is arranged in a tractor ground moving rail or within the energy transmissionrange of left and right vertical rails and achieves a function of energy transmission of the alternating magnetic field produced by an alternate current electric field through a high-frequency inverter; the internal module and the external module achieve wireless energy and power transmission through non-contact electricity transmission with electromagnetic induction, electromagnetic resonance andmicrowave.

The invention provides concrete prepared by utilizing an abandoned dry film and a preparation method thereof. The concrete comprises the following components in parts by weight: 5-15 parts of dry filmfine, 5-15 parts of magnesium reducing slag, 10-20 parts of cement, 20-30 parts of natural sand, 20-30 parts of stones, 10-15 parts of water and 5-10 parts of a water reducing agent, wherein the dryfilm fine is obtained by carrying out alkali treatment on the abandoned dry film, and mass content of a colloid component in the dry film fine is less than or equal to 3%. According to the invention,the abandoned dry film and magnesium reducing slag are recycled, and the concrete with excellent mechanical properties is obtained.

The invention discloses a recycling treatment method of dilute alkali wastewater, which comprises the following steps: (1) sequentially adding an oxidizer and an adsorbent into dilute alkali wastewater, and filtering and separating the product to obtain a filtrate I; (2) sequentially carrying out vacuum concentration and hot filtration on the filtrate I to obtain carbonate and a filtrate II; and (3) adding a sulfur-containing reducer into the filtrate II, continuing concentration, reacting while keeping the temperature at 450-480 DEG C, and cooling to obtain the solid alkali, wherein the oxidizer is ozone, and the ozone is continuously introduced into the dilute alkali wastewater at the flow rate of 40-60L / hour. The method disclosed by the invention is mild in technological conditions, simple to operate and easy for industrialization, solves the problem of pollution caused by dilute alkali wastewater discharge, and sufficiently recycles useful resources in the dilute alkali wastewater.