47results about How to "Has a removal effect" patented technology

The present invention relates to a method for constructing artificial natural ecologic revetment with the functions of raising revetment stability and controlling area-source pollution. Said method includes the following steps: (1), in the revetment top position close to vertical retaining wall constructing ecological filter broken stone channel and using it as pretreatment equipment for making area-source pollution control; (2), on the hard revetment laying matrix crushed gravel layer whose thickness is 40 plus or minus 20 cm; (3), laying and fixing fiber web or plant fiber web on the matrix crushed gravel layer and (4) on the plant fiber web area spreading and sowing herbaceous plant seeds and making cultivation.

An integral device of garbage burning and waste gas purifying is prepared as setting primary air inlet at bottom of boiler and garbage / lime powder inlet at middle ¿C bottom of boiler, connecting boiler top to cyclone through flue pipe, connecting cyclone bottom to material feedback mechanism with its bottom being connected to boiler bottom, connecting cyclone top to cooling tower bottom through flue pipe and setting water spraying nozzle opposite to flowing direction of smoke, connecting cooling tower top to bag ¿C type collector through neck flue pipe with inlets of iron fly ash and activated carbon, setting purified gas outlet and filtering material layer on bag ¿C type collector.

The invention discloses a method for treating cuprammonia complex wastewater through an electro-catalysis method. The method comprises the steps of taking a chlorine evolution electrode as an anode, taking a titanium mesh as a cathode, pumping in cuprammonia complex wastewater, performing electrolytic catalytic treatment on the cuprammonia complex wastewater, and directly discharging the treated wastewater or enabling the treated wastewater to enter follow-up treatment. The method for treating cuprammonia complex wastewater through the electro-catalysis method, provided by the invention has nitrogen removal efficiency to high-concentration cuprammonia complex wastewater, and under a certain condition, the treating efficiency is close to 100 percent, so as to realize the direct discharge or reuse of the cuprammonia complex wastewater. Meanwhile, both organic matters and chloridion existing in a treatment process can be removed to some degree. In addition, most of the cuprammonia complex wastewater is alkaline, an electrolytic method has no special requirements on pH of the wastewater, and electrolysis can be directly performed under an alkaline condition, so that acid required to be added during an actual treatment process is reduced, and therefore, other chemical reagents are not needed to be added in the whole treatment process of the electrolytic method, and the problems of secondary pollution and cost can be effectively avoided.

The invention discloses a photocatalytic disinfection reactor used for disinfecting reclaimed water and rainwater, a photocatalysis material and a preparation method thereof, an application and an application method thereof. The photocatalytic disinfection reactor comprises a sterilizer case and a disinfection reaction zone. An inlet pipe and an outlet pipe are arranged on the sterilizer case, the sterilizer case comprises a quartz cannula and a stainless steel outer sleeve; the disinfection reaction zone is an annular space formed by between the quartz cannula and the stainless steel outer sleeve, the vertical separator plates are arranged in a disinfection reaction zone every 120mm, the active carbon fiber (ACF) is fixed in the vertical separator plate for loading the nano TiO2 photocatalysis material; a heat suction / radiation fan is arranged at one end of the quartz cannula, and an ultraviolet lamp is arranged in the quartz cannula. On one hand, bacteria in reclaimed water and rainwater can be effectively inactivated, on the other hand, the operation and management of the reactor are convenient, the reactor is safe and reliable, impact and load by a certain water volume can be adapted, in addition, the disinfection reactor has removal effect to an organic matter in water, and safety risk of organism due to bacteria in reclaimed water and rainwater can be avoided.

The invention discloses an attapulgite rod refrigerator deodorization particle and a preparation method, and belongs to the technical field of attapulgite. The particle is prepared from the following ingredients: high-viscosity attapulgite clay, pasty attapulgite clay, thermally modified attapulgite clay, activated carbon, white carbon black, folium artemisiae argyi, rhizoma atractylodis, licorice root, rhizome of acorus calamus, clove oil, tea tree essential oil and herba menthae essential oil. The preparation method comprises the following steps: weighing, smashing and mixing the traditional Chinese medicines to obtain a traditional Chinese medicine mixture, and extracting in a Soxhlet extractor to obtain extracting solution; mixing and evenly stirring the high-viscosity attapulgite clay, the pasty attapulgite clay, the thermally modified attapulgite clay and the activated carbon, then, adding the extracting solution and the essential oil into mixed materials, evenly stirring and applying ultrasound; adding the white carbon black into the mixture, drying after evenly mixing, and carrying out granulation to obtain the attapulgite refrigerator deodorization particle. The attapulgite refrigerator deodorization particle has an efficient deodorization effect and a certain sterilizing effect. The preparation method is simple and practicable, and has a good application value.

The invention relates to a preparation method of a dopamine composite ultrafiltration membrane. The preparation method of the dopamine composite ultrafiltration membrane is characterized by comprising the following steps: washing polysulfone-based membrane thoroughly with deionized water; soaking in clean deionized water for 24 h; washing the soaked polysulfone-based membrane with the deionized water so as to remove the remaining soaking solution on the membrane; then soaking in isopropanol for 2 to 5 h; shaking-washing the soaked polysulfone-based membrane in the isopropanol for 1h, wherein the isopropanol treatment can remove both bacteria generated on the membrane and membrane preparation materials remaining on the surface or in the aperture gap of the membrane. The prepared dopamine composite ultrafiltration membrane has a contact angle of 63 degree which is reduced by 21 degree compared with the contact angle of basement-membrane, the hydrophilicity is significantly enhanced, and the treatment effect on mariculture wastewater is good.

The invention discloses a mineral phosphate removing agent and a preparation method thereof. The mineral phosphate removing agent is prepared from the following components in percentage by mass: 1 to 3 percent of SiO2, 8 to 10 percent of Al2O3, 2 to 4 percent of Fe2O3, and 86 to 88 percent of water. The method for preparing the mineral phosphate removing agent comprises the steps of S1, smashing and grinding mineral products into 150 to 200-mesh mineral powder; S2, mixing the mineral powder and a 10 to 20 % acid liquor according to the solid-to-liquid ratio being 1 to (3 to 5) to obtain an ore pulp; S3, at the temperature of 50 to 70 DEG C, stirring the ore pulp for 1 to 3 hours at the speed of 50 to 70 r / min to obtain the liquid phosphate removing agent. When the mineral phosphate removing agent is used for removing phosphate, phosphorus in the water and the liquid phosphate removing agent react to form a solid precipitate, and the phosphate is removed through a solid-liquid separation method, so that secondary pollution cannot be caused.

The invention discloses a method for deeply removing phosphorus in water by using calcined siderite. The method is characterized by comprising: calcining siderite grains with the grain size ranging from 0.5-3 mm at 500-850 DEG C to quickly decompose the siderite grains into hematite so as to obtain nano-structure calcined siderite grains; and then, filling a deep phosphorous removal filtering basin with the calcined siderite grains as a phosphorous removal adsorbent to adsorb and remove trace phosphate in water, wherein the phosphorus concentration of the treated water meets a third type standard of surface water.

The invention belongs to the technical field of sanitary napkins, and particularly relates to a taxus chinensis sanitary napkin and a preparation method thereof. The taxus chinensis sanitary napkin comprises a surface layer, an absorption core and a bottom layer, the absorption core comprises a protection core piece, a base material of the protection core piece is non-woven fabric, and the protection core piece is prepared from taxus chinensis, motherwort, radix sophorae flavescentis, cortex phellodendri, olive leaves, radix stemonae, folium artemisiae argyi, herba epimedii, eucommia ulmoides, honeysuckle, radix isatidis and glycerin. According to the taxus chinensis sanitary napkin and the preparation method, the sanitary napkin has the effects of resisting bacteria, diminishing inflammation, invigorating qi and blood, warming channels, dispelling cold, preventing pruritus of private parts and removing peculiar smell generated when the physiological period comes through mixed liquid medicine of multiple traditional Chinese medicines absorbed on the protective core piece; and the occurrence of inflammation and the occurrence of the condition of aggravation of the inflammation in the menstrual period are reduced.

The invention relates to an oil and rust remover and a preparation method and application thereof. The oil and rust remover is composed of the following raw materials in percentage by weight: 1-15% ofan inorganic acid, 10-30% of an organic acid, 1-3% of an assistant, 1-4% of corrosion inhibitor, 0.5-4% of a surfactant, 0.3-2% of a penetrant, 0.2-2% of sodium fluoride, 2-8% of sodium dgluconate and the balance pure water. In a using process, the oil and rust remover is not volatilized, and a large amount of acid mist is not generated. The oil and rust remover is high in rust and oil removal speed.

The invention discloses a cadmium removing adsorbent for marine products and a preparation method of the cadmium removing adsorbent. The cadmium removing adsorbent for the marine products is preparedfrom the following raw materials in part by weight: 20-30 parts of modified silica powder, 50-70 parts of fish bone meal, 25-50 parts of modified shell powder, 15-30 parts of shrimp shell powder, 10-30 parts of a complexing agent, 3-5 parts of sodium carbonate and 200-400 parts of a solvent. The invention further provides the preparation method of the cadmium removing adsorbent for the marine products. The method comprises the following steps: mixing the raw materials, drying the raw materials at 70-90 DEG C and grinding the raw materials into 30-50 meshes after drying. When the prepared cadmium removing adsorbent for the marine products is used for removing cadmium from the marine products, the marine products are not needed to be ground, and the cadmium removing rate is high; besides, daily domestic wastes such as shells, fish bones, shrimp shells and the like are recycled and turned into valuables, which is good for environmental protection and reduces the cost; meanwhile, the adsorbent has a certain removal effect on arsenic while effectively adsorbing cadmium.

The invention provides an efficient non-toxic sewage treatment agent. The treatment agent is prepared from the following components in parts by weight: 40 to 42 parts of porous magnetic polyacrylamidemicrosphere, 18 to 20 parts of modified coconut shell charcoal, 18 to 19 parts of exfoliated graphite, 10 to 11 parts of diatomite, 8 to 9 parts of palygorskite, 10 to 12 parts of caulis bambusae intaeniam, 8 to 10 parts of saw dust, 6 to 8 parts of sodium lignin sulfonate, 5 to 7 parts of chitosan, 1 to 2 parts of sodium humate, 2 to 3 parts of cortex mori, 0.5 to 1 part of tea polyphenols, 0.5to 1 part of pine needle meal and 1 to 1.5 parts of polyaspartic acid. The efficient non-toxic sewage treatment agent is characterized in that the raw material components are environmentally friendlyand non-toxic, and do not cause secondary pollution on a water body. The raw material components of specific contents are mixed according to a specific preparation method, the removing effect of theprepared water treatment agent on polluted organic matters and heavy metals in sewage can be improved greatly. Meanwhile, the prepared water treatment agent can also be used for effectively killing bacteria and microorganisms in the water body.

The invention relates to the technical field of ceramic product production, and especially relates to a ceramic raw material stirring device. The device comprises a stirring barrel body, a first connecting hole communicated with the interior of the stirring barrel body is formed in the eccentric position of one side surface of the stirring barrel body, a magnet rod penetrates through the first connecting hole, is inserted into the stirring barrel body and is connected with the inner wall of the stirring barrel body through a connecting mechanism, and the side, provided with the first connecting hole, of the stirring barrel body is connected with an end cover for covering the first connecting hole through a detaching mechanism. The device has the effect of removing iron impurities in the ceramic raw material as much as possible.

The invention provides a method for reducing anisidine value in polyunsaturated fatty acid oil, and the method comprises the following steps of: dissolving a polyunsaturated fatty acid raw material inan organic solvent, adding an adsorbent, performing stirring and adsorbing at a low temperature, performing filtering to remove the adsorbent, blow-drying the liquid component in the adsorbent with inert gas, and recovering the organic solvent in the filtrate to obtain a crude product, and carrying out molecular distillation or rectification on the crude product to obtain the polyunsaturated fatty acid oil with low anisidine value. According to the method, the use amount of the adsorbent is small in the technological process, the anisidine value reducing effect is obvious, the loss of polyunsaturated fatty acid is small, the final product polyunsaturated fatty acid oil obtained through the method is free of peculiar smell, and the requirements of consumers can be well met; the adsorbent applied or added in the production process can effectively reduce the peroxide value and anisidine value of the final product, and also has a certain removal effect on other trace substances such as color, heavy metals, dioxin, benzopyrene and the like in the product.

The invention belongs to the technical field of ecological restoration, and discloses a method for treating copper-containing and chromium-containing industrial wastewater by applying a bacterium detoxification effect. The method comprises the following steps: carrying out amplification culture on bacillus cereus and then carrying out centrifugal separation to obtain an active microbial agent; andputting the obtained active microbial agent into industrial wastewater containing chromium and copper for reaction treatment. According to the method, bacillus cereus is used for treating the wastewater containing hexavalent chromium in a copper-containing environment, reduction of hexavalent chromium and immobilization of trivalent chromium can be remarkably promoted without adding extra nutrients, the removal rate of hexavalent chromium can reach 97.6%, and the removal rate of total chromium can reach 90.3%; and meanwhile, the method has a certain removing effect on other metal ions. According to the method, nutrients do not need to be additionally added, secondary pollution does not exist, the reaction process is carried out at the room temperature, operation is easy and convenient, and the cost is greatly reduced.

THE invention discloses Chinese herbal medicine foot washing soap. The foot washing soap is prepared from, by weight, 80-95% of soap grains and 5-10% of Chinese herbal medicine through mixing. In the foot washing soap, the foot washing soap can treat dermatophytosis, has a certain auxiliary removal effect on tinea manuum and tinea pedis, has good stain removal and skin care functions, and has a healing effect on foot cracks. The Chinese herbal medicine formula is gentle and free of toxic and side effects.

The invention relates to a water-driven flue gas purification device for a ship. According to the technical scheme of the water-driven flue gas purification device, the purification device consists of a fan bottom plate (1), a water outlet pipe (2), a water-driven fan (3), a spray water return pipe (4), a mounting plate (5), a spray unit (6), a filter drum (7), a wire mesh (8), a shell (9), a bracket (10), a spray water supply pipe (11), a water inlet pipe (12) and a shutter (13). One end of the water inlet pipe (12) is connected with a water inlet opening of the water-driven fan (3); the other end of the water inlet pipe (12) passes through the shell (9) to be externally connected with a high-pressure water source; one end of the water outlet pipe (2) is connected with a water outlet opening of the water-driven fan (3); the other end of the water outlet pipe (2) passes through the shell (9). One end of the spray water supply pipe (11) is connected with the water inlet pipe (12); the other end of the spray water supply pipe (11) is connected with the spray unit (6); one end of the spray water return pipe (4) is connected with the spray unit (6); the other end of the spray water return pipe (4) is connected with the water outlet pipe (2). The water-driven flue gas purification device has advantages that the purification efficiency is high, a power source is reliable, the in-situ purification of flue gas from a fire disaster in a cabin can be realized, and the like.

The invention provides an environment-friendly type water purifying agent for industrial sewage. The water purifying agent is prepared from the following components in parts by weight: 35-38 parts ofporous magnetic polyacrylamide microspheres, 20-22 parts of modified coconut shell charcoal, 15-17 parts of sulfonated coal, 10-11 parts of sepiolite, 10-11 parts of zeolite, 8-10 parts of caulis bambusae in taeniis, 6-8 parts of bran, 6-8 parts of sodium lignin sulfonate, 4.5-5 parts of chitosan, 1.5-2 parts of polyepoxysuccinic acid, 2-3 parts of cortex mori and 1.5-2 parts of cortex magnoliae officinalis. The raw material components are environmentally friendly and non-toxic, and do not cause secondary pollution on a water body; the raw material components with special content are mixed according to a special preparation method, so that the removal effect, on pollutant organic substances and heavy metal in sewage, of the water purifying agent prepared can be greatly improved; and meanwhile, the prepared water purifying agent further can effectively kill bacteria and microorganisms in the water body.

The invention provides a copper-loaded antibacterial porous ceramsite filler and a preparation method of the copper-loaded antibacterial porous ceramsite filler. The copper-loaded antibacterial porous ceramsite filler is prepared from the following components in parts by weight: 75 to 90 parts of powder of steelmaking slag subjected to a copper loading treatment, 10 to 15 parts of pore forming agent and 3 to 7 parts of bonding agent, wherein the pore forming agent is prepared from the following components in percentage by weight: 60% of wood chips, 15% of pulverized coal and 25% of limestone powder. The copper-loaded antibacterial porous ceramsite filler has the advantages that the filler can be applied to the fields, such as micro-polluted source water filtration, biological sewage treatment, landscape gardening, and the steelmaking slag is recycled, therefore the effect of turning waste into treasure is achieved.

The invention discloses an oxidized hyperbranched polyethyleneimine nanofiltration membrane. The membrane comprises a supporting layer and an oxidized hyperbranched polyethyleneimine layer, and the oxidized hyperbranched polyethyleneimine layer is obtained by performing vacuum filtration on oxidized hyperbranched polyethyleneimine turbid liquid to the supporting layer. The invention also discloses a preparation method of the oxidized hyperbranched polyethyleneimine nanofiltration membrane, and the method comprises the following steps: adding an oxidizing agent into a hyperbranched polyethyleneimine aqueous solution for reaction, and after precipitation, adding deionized water for dilution to obtain oxidized hyperbranched polyethyleneimine turbid liquid; placing the oxidized hyperbranched polyethyleneimine suspension on a support layer, carrying out vacuum filtration to form a membrane, and carrying out drying to obtain the oxidized hyperbranched polyethyleneimine nanofiltration membrane. The preparation method is simple, conditions are mild, and auxiliary effects of organic solvents are not needed. The oxidized hyperbranched polyethyleneimine nanofiltration membrane can intercept dye pollutants in water and remove salt in water, and has huge application potential in the field of water treatment.

The invention belongs to the technical field of products for medical cleaning, and in particular relates to a bio-film remover for medical endoscopes and a preparation method thereof. The bio-film remover for medical endoscopes is prepared from the following materials: sodium tripolyphosphate, sodium citrate, 1.2-propylene glycol, Tween-20, sorbic acid, RQ-129E, Mirataine ASC, TTA and distilled water. The bio-film remover can rapidly and thoroughly remove bio-film; the amount of foam is small, and the bio-film remover is suitable for manual washing and mechanical washing; the bio-film remover can be repetitively used, and has a persistent bio-film removing effect; and the bio-film remover cannot corrode endoscope materials, and prolongs the service lives of endoscopes.

The invention relates to a method for restoring soil contaminated by persistent organic pollutants through elution with electrolyzed oxidizing water. according to the invention, corresponding reagentsare respectively added into effluents output from two poles of a generator for electrolyzed oxidizing water so as to prepare three eluents; a mixed solution of sodium lauryl sulfate and sodium dodecyl benzene sulfate is added into alkaline water at the negative pole to prepare an eluent A; FeCl3 is added into a part of acidic water at the positive pole to prepare an eluent B, and H2O2 is added into the other part of the acidic water at the positive pole to prepare an eluent C. The soil is eluted according to a sequence of elution with the eluent A, rinsing, elution with the eluent B, rinsing,elution with the eluent C and rinsing. The method of the invention is relatively simple; waste liquid obtained after elution can be completely neutralized, so treatment is easy and operation is safeand reliable; and the method has the advantages of easy operation and maintenance, low material cost and low energy consumption for operation, and is applicable to restoration of soil in industrial contaminated sites and with low organic matter pollution concentrations. The method has good restoration effect on soil contaminated by various organic substances including persistent organic pollutants, and is a simple and effective remediation technology for organic contaminated soil.

The invention discloses a preparation method of a phosphorus removal material, which is characterized by comprising the steps of 1) putting a graphite powder raw material, grinding balls and a ball milling medium into a ball milling tank according to a mass ratio of 1: (10-20): (4-6), carrying out ball milling on ball milling equipment for 24 hours at a rotating speed of 400-600r / min, then taking out, drying, and sieving with a 200-mesh sieve to obtain graphite powder; 2) dissolving the obtained graphite powder in a copper sulfate solution according to a solid-to-liquid ratio of 1: (5-10), carrying out ultrasonic treatment at 80-100KHz for 4-6 hours, then filtering and washing, carrying out high-temperature calcination on the obtained solid at the temperature of 800-1000 DEG C for 1-3 hours, and cooling to room temperature after the calcination is ended so as to obtain a solid product; and 3) mixing the obtained solid product with polystyrene and polyvinyl chloride according to a mass ratio of 1: (0.5-1): (0.5-1), carrying out a cross-linking reaction under the action of a catalyst, drying the product after the reaction is finished, and carrying out extrusion molding in a twin-screw extruder to obtain the phosphorus removal material. The material has an obvious removal effect on phosphorus and other pollutants in sewage.

The invention discloses a Chinese herbal medicine and weakly alkaline electrolyzed water mixed deodorizing cleaning agent for chicken farms, and belongs to the technical field of animal breeding. Thecleaning agent is prepared from the following raw materials in parts by weight: 5-10 parts of folium eriobotryae, 5-10 parts of orange peel, 3-10 parts of Chinese honey locust, 5-10 parts of folium artemisiae argyi, 5-10 parts of camphor, 5-10 parts of angelica sinensis, 3-9 parts of rhizoma kaempferiae, 3-9 parts of mint and 30-60 parts of a weakly alkaline electrolyzed water. The above natural deodorizing traditional Chinese medicine agents are mixed with the weakly alkaline electrolyzed water with cleaning effect, so that the chicken farm deodorizing agent has good decontamination and certain deodorizing effects, can effectively remove excrement and stains in chicken farms, and meet the requirements of modern breeding industry, and has a promising market prospect.

The present invention relates to the technical field of ceramic product production, in particular to a ceramic raw material stirring device, comprising a mixing barrel body, a first connection hole communicated with the interior of the mixing barrel body is provided at an eccentric position on one side of the mixing barrel body, A magnet rod passes through the first connection hole, the magnet rod is inserted into the inside of the mixing tank body and connected with the inner wall of the mixing tank body through a connecting mechanism, and the side of the mixing tank body provided with the first connection hole passes through The dismounting mechanism is connected with an end cover covering the first connecting hole. The invention has the effect of removing iron impurities in ceramic raw materials as much as possible.

The invention discloses a maintenance device for garden green plants and a maintenance method thereof, comprising a curb and a cylindrical rail, the cylindrical rail is connected to a functional part and a driving part; , the arc-shaped card slot can move along the axial direction of the cylindrical track and rotate in the circumferential direction. The arc-shaped card slot is uniformly provided with a placement cavity, and the placement cavity is rollingly connected with rolling balls. The arc-shaped card slot is rotatably connected with a fixed frame , the fixed frame is connected with a gradually expanding guide part, and the center of the gradually expanding guide part is provided with a water mist spray tube and an air spray tube, and the water mist spray tube is located inside the wind spray tube, and the top of the fixed frame is rotatably connected with a drive part connected The supporting rod; the driving part includes a driving car, and the driving car is provided with a fine water mist mechanism and a wind spray mechanism. Through the above arrangement, the irrigation efficiency can be greatly improved, and at the same time, the leaves of the garden plants can be cleaned, so it is suitable for widespread promotion and practicality.

The invention discloses a method for de-coloring soybean polysaccharide, particularly a method for de-coloring the extract of soybean polysaccharide by ion exchange resin. The method comprises the following concrete steps: (1) preparing soybean extract; and (2) allowing the soybean extract to pass through a diatomite layer, further conducting the ion exchange chromatography on the soybean extractby using ion exchange columns, and drying to obtain the required soybean polysaccharide. By de-coloring the extract of soybean polysaccharide by the ion exchange resin, the invention can remove the pigment and organic impurities in soybean polysaccharide; the obtained soybean polysaccharide has the advantages of pure-white and fine color, low protein content and high purity; in addition, by de-coloring the extract of soybean polysaccharide by ion exchange resin, the invention can further simplify the treatment procedure, specifically, the good de-coloring effect can be achieved by only passing through the ion exchange columns; and the content of impurities in the product is low as the spray-drying process is adopted.

The invention provides a preparation method and application of an environment-friendly water-based cleaning agent for buildings, and relates to the technical field of surface cleaning. The preparation method comprises the following steps: S1, preparing the raw materials according to the weight parts of the components; s2, starch and alkenyl succinic anhydride are used as raw materials, and the starch-based surfactant with special performance is prepared through a chemical synthesis method. The detergent is prepared by adopting a superfine nano microemulsion technology, can efficiently remove stubborn dirt, grease, scrawling and the like, has a unique removal effect and application scenarios compared with a traditional detergent, and can effectively capture and polymerize target pollutants by forming a nano uniform-pore film on the surfaces of internal superfine nano microemulsion particles. The inorganic nano polymer material is used as a core raw material, so that the paint has excellent performances of environmental protection, no toxicity, no odor and no color. Meanwhile, the cleaning agent is free of residues after being used and can form a protective film on the surface of the ancient building after being used, so that the surface of the ancient building is further protected.

The invention relates to a degreasing and derusting agent as well as a preparation method and application thereof. Composed of raw materials in the following weight percentages: 1-15% inorganic acid, 10-30% organic acid, 1-3% additive, 1-4% corrosion inhibitor, 0.5-4% surfactant, 0.3-2 penetrant %, sodium fluoride 0.1-2%, D-sodium gluconate 2-8%, and the balance is pure water. During use, it is non-volatile and does not produce a large amount of acid mist. Fast rust and oil removal.