38results about How to "Remove applicable" patented technology

The invention relates to a phosphorus removing agent containing inorganic mineral and an application method thereof. The phosphorus removing agent contains 50-75% of an aluminium-containing compound, 15-30% of an inorganic mineral adsorbent and 10-20% of an iron-containing compound, and also can be compounded with a B component. By the use of the phosphorus removing agent, inorganic phosphorus and organic phosphorus in wastewater are removed effectively. By the addition of the inorganic mineral adsorbent, phosphates are fully adsorbed, and the inorganic mineral adsorbent can be combined with iron hydroxide and dried aluminium hydroxide gel generated during the reaction. Thus, more phosphates and pollutants in water can be adsorbed to form larger floc, and settling and flocculation processes are accelerated. Through the synergistic effect of substances, a better phosphorus removing effect is achieved. The phosphorus removing agent has a very good effect of processing orthophosphate, polyphosphates and organic phosphorus and especially has a function of efficiently removing organic phosphorus. In addition, the application method of the phosphorus removing agent is simple.

The invention relates to a method for preparing a formaldehyde and ozone removal catalyst MnO2 at room temperature. The method is characterized by comprising the following steps: 1, preparing a 0.1 to 2mol / L solution from a water-soluble manganese salt; 2, preparing a 0.05 to 1mol / L solution from an oxidizing agent; 3, continuously dropwise adding the solution obtained by the step 2 into the solution obtained by the step 1 at a constant speed; 4, aging produced MnO2 suspension for 1 to 1 hour; 5, washing precipitates obtained by aging for 1 to 5 times by using water, drying the precipitates at 105 DEG C after suction filtration, and roasting the precipitates at 200 to 300 DEG C to obtain the catalyst MnO2. The catalyst MnO2 prepared by the method can be used for simultaneously decomposing harmful gases formaldehyde and ozone in contaminated air into harmless H2O and CO2 under a room temperature condition, and has the advantages of no harmful byproducts and high formaldehyde and ozone removal efficiency.

The invention specifically relates to a method for removing complexed heavy metal ions in a water body, belonging to the technical field of wastewater treatment. The method provided by the invention comprises the following steps: reacting a water body containing complexed heavy metal ions with a heavy metal replacement reagent, and then adding a heavy metal capturing agent. The method for removing complexed heavy metal ions in the water body is simple and easy to operate, low in cost and capable of efficiently removing heavy metal ions in a wide concentration range, and the concentration content of heavy metal ions in treated water is less than 0.1 ppm.

The invention provides an iron-based catalyst for strengthening ozone oxidation of organic pollutants. The catalyst can efficiently catalyze the organic pollutants which are difficult to degrade by the ozone oxidation under the condition of low ozone concentration to remove difficultly degraded organic substances, and is prepared by taking natural zeolite, artificial zeolite or a zeolite-like material as a carrier loaded with active components, wherein the active components comprise ferrihydrite and delta-hydroxyl oxidize iron in a mass ratio of (20 to 80): (20 to 80); the invention further provides a preparation method of the catalyst and a method for treating wastewater by using the catalyst which can effectively remove antibiotics such as metronidazole difficult to degrade in hospital wastewater; furthermore, the invention improves a disinfection device of existing hospital wastewater, namely a filling layer of the iron-based catalyst is added in an ozone contact pool, thereby not only disinfecting wastewater, but also decomposing the antibiotics in wastewater without changing original operating parameters.

The invention relates to a nano zero valent iron @ molecular sieve composite material and a preparation method and applications thereof. The preparation method comprises following steps: preparing aniron salt solution; adding molecular sieves into the iron salt solution; mechanically stirring the iron salt solution under the protection of nitrogen so as to introduce iron ions into the molecular sieves to obtain a mixed solution (A) containing molecular sieves and iron salts; subjecting the mixed solution (A) to solid-liquid separation; after separation, mixing the solids with water to obtaina mixed reaction solution; under the protection of nitrogen and mechanical stirring, adding a solution of a reducing agent into the mixed reaction solution, keeping on stirring to obtain a mixed solution (B); subjecting the mixed solution (B) to solid-liquid separation; and finally washing and drying the obtained solids after separation to obtain the nano zero valent iron @ molecular sieve composite material. The synthesized nano zero valent iron @ molecular sieve composite material has a cation exchange function of molecular sieves and an adsorption-reduction function of nano zero valent ironand has a good effect on removing cations of heavy metals such as Pb<2+>, Cu<2+>, etc. and anions such as ions of arsenous acid.

The invention discloses a method for rapidly removing a thermal spraying coating. A sand blasting material adopts alloy sand with diameters being 0.5-5.0 mm, special-shaped alloy sand with the ratio of length to width being 1.0-5.0 as well as 10-50-mesh ceramic sand, wherein the mass ratio of the alloy sand to the special-shaped alloy sand to the ceramic sand is (1-4):(1-4):1; before sand blasting, three raw materials are uniformly poured into an iron barrel simultaneously, mixing of the raw materials is facilitated, the mixed sand in the iron barrel is poured into a sand tank for sand blasting, and the air source pressure for sand blasting is 0.5-0.9 MPa. The sand composition is optimized and improved, the air source pressure is increased, the removal time of an old coating is greatly shortened, and compared with the time for old coating removal through single ceramic sand blasting, the time is shortened by 60%-75%; meanwhile, the production cost is reduced, the old coating is economically and efficiently removed, and the method is suitable for removing various metal coatings, alloy coatings and metal ceramic coatings.

The invention provides a method for synergistically degrading refractory organic matters in village and town sewage by using a hydrogen peroxide component in low-concentration peracetic acid. The method comprises the following steps of: adding nano zero-valent iron serving as a catalyst and a low-concentration peracetic acid solution which serves as an oxidant and contains hydrogen peroxide into water containing antibiotics; irradiating the mixed solution by using ultraviolet light emitted by a low-pressure mercury lamp 1; using the nano zero-valent iron and the ultraviolet light to jointly activate strong oxidizing free radicals generated by the oxidant, and using the direct photolysis effect of the ultraviolet light to synergistically degrade the refractory organic matters in the village and town sewage. According to the method, the hydrogen peroxide in low-concentration peracetic acid is used for cooperating with peracetic acid, the nZVI catalyst is added, meanwhile, ultraviolet irradiation is carried out to construct an nZVI / UV / PAA heterogeneous strengthening system, and nZVI and UV are used for activating to generate strong oxidizing free radicals to oxidize and remove antibiotics; the method has the advantages of high treatment efficiency, simplicity and convenience in operation, good reusability of the catalyst, low cost and the like.

The invention relates to a method for preparing a photocatalyst for treating petroleum pollutants in water. The method is characterized in that titanium dioxide and Cu and Mn oxides are taken as active ingredients and are loaded on a floating type foaming ceramic carrier through adopting a rolling load technology. The method comprises the following specific steps: (a) dissolving titanyl sulfate into deionized water, regulating the pH value to 7-10 by using a 5-25% ammonia solution, cleaning the obtained white precipitate centrifugally, mixing the white precipitate with the deionized water, pulping and regulating the pH value to 7-10 under a mixing condition by using H2O2 and HCl so as to obtain titanium sol; (b) dissolving manganese salt and copper salt into the deionized water, mixing with a permanganate solution, dripping a NaOH solution to regulate the pH value to 8-12 and spray-drying the obtained size to obtain catalyst precursor powder; and (c) adding foaming ceramic balls into a rotary granulator, spreading the catalyst precursor slowing under the rolling condition, spraying titanium sol to be used as an adhesion agent, carrying out roll coating, drying and calcinating to obtain a catalyst finished product.

The invention relates to a method for removing a brominated flame retardant in a water body. An oxychlorination agent is added into wastewater containing the brominated flame retardant, irradiating isconducted through an ultraviolet light emitting diode, and chlorine radicals, hydroxyl radicals and the like are generated through short wave ultraviolet light in an activated mode to conduct oxidation removing on the brominated flame retardant. Compared with the prior art, the oxychlorination agent is adopted, the chlorine radicals are generated through the short wave ultraviolet light in the activated mode to conduct oxidation removing on organic matter, and a quick, efficient and environment-friendly novel technology for treating the brominated flame retardant in the wastewater is provided; and the method provided by the invention is environmentally friendly, secondary pollution is not generated, the good degrading effect can be achieved under the normal-temperature condition, operation is easy, and the method is suitable for removing organic pollutants such as the brominated flame retardant in the water body.

The invention relates to a layered composite hydrodesulphurization catalyst and a preparation method. With nickel-molybdenum-tungsten composite sulfide as a catalytic active component and organicallymodified layered clay as a carrier, nickel-molybdenum-tungsten composite sulfide nanoparticles are prepared by adsorption, coordination, impregnation, drying, extrusion, roasting and vulcanization, the nickel-molybdenum-tungsten composite sulfide nanoparticles are uniformly dispersed into the layered structure of the clay, forming the layered composite hydrodesulphurization catalyst, wherein the molar ratio of nickel to molybdenum to tungsten is (4.5 to 5.5) to (0.15 to 1.2) to 1, and the total mass content of the nickel, molybdenum and tungsten elements in the layered composite hydrodesulphurization catalyst is 28 to 45 percent. The desulphurization efficiency of the novel, efficient and stable hydrodesulphurization catalyst is up to 99 percent or above, and the layered composite hydrodesulphurization catalyst is particularly applicable to the removal of sulfur in petroleum products.

The invention provides a waste wood removing system, and relates to the field of cutting. The waste wood removing system comprises suction cups, a suction cup installing plate, a lifting air cylinderand flow collecting blocks; the suction cup installing plate is provided with adjusting grooves, and the adjusting grooves penetrate through the two opposite long and wide faces of the suction cup installing; the suction cups are slidably installed in the adjusting grooves; the suction cups are provided with air guiding holes penetrating through the suction cups in the length direction of the suction cups, and the flow collecting blocks are connected with the corresponding ends of the air guiding holes of the suction cups through guiding pipes; and an output shaft of the lifting air cylinder is fixed to the suction cup installing plate. According to the waste wood removing system, the problems that an existing waste wood removing system can not be suitable for removing waste wood in special shapes and is narrow in application range.

The invention discloses a polybenzoxazine-based derived carbon material for adsorbing carbonyl sulfide and a preparation method and application thereof. The preparation method of the polybenzoxazine-based derived carbon material comprises the steps that an amine compound serves as a curing agent, a polyoxyethylene-polyoxypropylene-polyoxyethylene triblock copolymer P127 serves as a soft template agent, in the presence of the curing agent and the soft template agent, a phenol compound and an aldehyde compound are subjected to a one-step polymerization reaction, an obtained polymer is subjected to high-temperature carbonization pyrolysis, and the preparation is completed. The polybenzoxazine-based derived carbon material has the advantages of large specific surface area, developed micropores, high mechanical strength and the like, and has a relatively good adsorption effect on carbonyl sulfide in coke oven gas. The method has the advantages of simple preparation method, low raw material cost, no by-product and the like, and has potential industrial application value.

The invention provides a device for removing synthetic musk in sewage. The device comprises an aerobic treatment device and a sedimentation device, wherein the aerobic treatment device comprises a plurality of small microbial spheres arranged in the aerobic treatment device, a plurality of baffles vertically arranged in the aerobic treatment device, an aeration device located at the bottom of the aerobic treatment device as well as a carrier separator and an effluent weir which are located at a water outlet of the aerobic treatment device. Under the action of aeration and blockage with the baffles, the sewage sequentially passes through bottom ends and top ends of the adjacent baffles to form baffling flow which reciprocates up and down, and contact time with the plurality of small microbial spheres is prolonged; the small microbial spheres are spheres containing bacillus subtilis and a curing embedding agent, the curing embedding agent is used for adsorbing the synthetic musk in the sewage, and the bacillus subtilis is used for degrading the adsorbed synthetic musk; the degraded sewage is subjected to sedimentation treatment in the sedimentation device, and a supernatant is treated effluent.

The invention relates to the technical field of medical instruments, in particular to a method for removing endotoxin in bacterial cellulose. The method comprises the following steps: (1) soaking sliced bacterial cellulose in a sodium hydroxide solution, and replacing the sodium hydroxide solution for soaking for multiple times; (2) soaking bacterial cellulose in an ethanol solution, and dissolving endotoxin in the porous structure; (3) adding a sodium hydroxide solution and a polysulfone resin polymer with positive charges into the bacterial cellulose treated in the step (2); and (4) soaking the treated bacterial cellulose in water for injection until the pH value is 7 + / -1. According to the method, the endotoxin in the bacterial cellulose is removed, the purification process of the bacterial cellulose is accelerated, the mechanical property and physical and chemical aspects of the bacterial cellulose are not affected, and the endotoxin content of the obtained bacterial cellulose is far smaller than the specified content.

Belonging to the technical field of vegetable oil processing, the invention relates to a method for removal of vegetable oil precipitate after pressing. The method includes: subjecting pressed vegetable oil to coarse filtration, then adding a nonionic surfactant for microwave radiation treatment, conducting cooling and filtering, and removing precipitate. The vegetable oil obtained by the method provided by the invention has good quality, and is free of precipitate or turbid phenomenon after placement at 0-6DEG C for 1-3 months.

The invention relates to the technical field of wastewater treatment, in particular to a method for removing complexed heavy metal ions in water. The invention provides a method for removing complexed heavy metal ions in water, comprising the following steps: 1) reacting the water containing complexed heavy metal ions with a heavy metal replacement reagent, and then adding a heavy metal scavenger. The method for removing complexed heavy metal ions in the water body is simple, easy to operate, low in cost, has a wide range of removable heavy metal ion concentrations, and can be efficiently removed, and the concentration of heavy metal ions in effluent water is less than 0.1 ppm.

A method of dried bromide gases belongs to the field of inorganic chemical and hydrogen gaseous purification technology.This method of dried bromide gases allows the hydrogen gases containing moisture to enter the drying tower of the filler from the bottom, and connect the liquid inorganic bromide, triglycetic phosphorus and hydrogen bromide from the top of the drying tower of the fillerThe gas is in the inverse flow of the drying tower in the drying tower. The two -stage series of filler drying tower is dried. After passing the dehomato, the water content is lower than 20 ppm dry bromide gases. At the same timeEssenceTrilyarized phosphorus liquids can be used circularly, but after the concentration is less than 80%, vacuum distillation can be used to recycle and use it.This method is more efficient than the current method. The dehydration efficiency is higher. The water content of hydrogenation can be less than 20PPM. It is suitable for the case where the hydrogen gaseous pressure is relatively small in the production process. It is especially suitable for bromine bromine bromine in hydrogen.The removal of water in hydrogen gases.

The invention provides an auxiliary robot for cable construction, and belongs to the technical field of cable construction. The technical scheme is as follows: the robot comprises a rack, the rack comprises a top plate and vertical plates arranged at the two ends of the top plate, a first screw rod is rotationally arranged between the two vertical plates, a rectangular opening is formed in the position, corresponding to the first screw, of the top plate, a first moving plate is arranged on the first screw rod in a threaded connection manner, the first moving plate penetrates through a limitingrod arranged between the two vertical plates; the limiting rod is located above the first screw rod, a cutting mechanism is arranged on the first moving plate, a steel armor jacking mechanism is arranged on the outer side of any vertical plate, a cable clamp is arranged on the outer side of the other vertical plate, and the end, close to the cable clamp, of the first screw rod extends out of thevertical plate to be connected with a first motor with a speed reducer. The auxiliary robot has the advantages that the robot can assist workers in removing the outer sheath of a cable, so that the workload of construction personnel is reduced, and the construction progress is improved.

The invention provides an auxiliary robot for cable construction, which belongs to the technical field of cable construction. Its technical solution is: including a frame, the frame includes a top plate and vertical plates arranged at both ends of the top plate, a screw one is rotated between the two vertical plates, and a screw on the top plate corresponding to the screw one The position is provided with a rectangular opening, and the screw rod one is provided with a moving plate one through threaded connection, and the moving plate one passes through a limit rod arranged between the two vertical plates, and the limit rod is located on the Above the screw rod one, a cutting mechanism is provided on the moving board one, a steel armor tightening mechanism is provided on the outside of any of the vertical boards, and a cable clamp is provided on the outside of the other vertical board, and the screw rod one is close to the One end of the cable clamp stretches out from the vertical plate and is connected with the motor with the reducer. The beneficial effect of the invention is that it can assist manual removal of the outer sheath of the cable, so as to reduce the work burden of construction personnel and improve the construction progress.

The invention relates to an ozone oxidation ammonia gas catalyst as well as a preparation method and application thereof, and belongs to the technical field of environment-friendly chemical industry. The catalyst is composed of a carrier, an active component and an auxiliary component. The carrier is a molecular sieve or activated carbon. The active component is copper oxide and / or manganese oxide. The auxiliary components are ferric oxide and titanium oxide. The preparation method of the catalyst comprises the following steps: adding salt of active components and and ferric salt into water, conducting stirring and dissolving to obtain a metal salt solution, adding a carrier and titanium dioxide into the solution, continuously conducting stirring, dropwise adding a precipitator into the solution to co-precipitate the salt of the active components and ferric salt, stopping dropwise adding the precipitator when the pH value of the metal salt solution reaches 7.5-8.3, washing the obtained precipitate with water, conducting filtering, drying and molding, and then conducting roasting at 300-450 DEG C for 3-6 hours to obtain the catalyst. The catalyst is combined with ozone for use, and can be applied to ammonia gas purification.

The invention provides a method for removing synthesis musk in sewage, which comprises the following steps: introducing synthesis musk-containing sewage in an aerobic processing apparatus having several microorganism balls, prolonging the contact time of the synthesis musk-containing sewage and several microorganism balls units, fully degrading the synthesis musk by several microorganism balls units, then introducing the degraded sewage in a deposition apparatus for sludge deposition treatment to obtain a supernatant; wherein each microorganism balls unit is composed of several microorganism balls, each microorganism ball is the ball containing bacillus subtilis and a cured embedding agent, each microorganism ball uses the cured embedding agent for absorbing the synthesis musk in sewage and uses the bacillus subtilis for degrading the attached synthesis musk. The method is used for deeply processing the sewage, and the synthesis musk content in the processed water is low, and clearance rate is high.

The invention discloses an adsorbing material for removing organic sulfur in coke oven gas and application of the adsorbing material. The adsorbing material is prepared by the following steps: by taking activated carbon as a carrier, carrying out in-situ reaction on N-methylimidazole, bromoethane and anhydrous sodium acetate on the activated carbon to generate 1-ethyl-3-methylimidazole acetate ionic liquid so as to achieve loading of the 1-ethyl-3-methylimidazole acetate ionic liquid on the activated carbon in situ. The adsorbing material can simultaneously remove carbonyl sulfide and carbon disulfide in coke oven gas at a low temperature (20-50 DEG C), is used for removing organic sulfur in coke oven gas, has the advantages of pertinence, simple process, convenience in operation, low operation cost, no corrosion to equipment and the like, and has potential industrial application value.

The invention provides a device for removing synthetic musk in sewage. The device comprises an aerobic treatment device and a sedimentation device, wherein the aerobic treatment device comprises a plurality of small microbial spheres arranged in the aerobic treatment device, a plurality of baffles vertically arranged in the aerobic treatment device, an aeration device located at the bottom of the aerobic treatment device as well as a carrier separator and an effluent weir which are located at a water outlet of the aerobic treatment device. Under the action of aeration and blockage with the baffles, the sewage sequentially passes through bottom ends and top ends of the adjacent baffles to form baffling flow which reciprocates up and down, and contact time with the plurality of small microbial spheres is prolonged; the small microbial spheres are spheres containing bacillus subtilis and a curing embedding agent, the curing embedding agent is used for adsorbing the synthetic musk in the sewage, and the bacillus subtilis is used for degrading the adsorbed synthetic musk; the degraded sewage is subjected to sedimentation treatment in the sedimentation device, and a supernatant is treated effluent.

The invention discloses an attapulgite clay composite catalyst for formaldehyde removal and its preparation method and application. The composite catalyst mainly includes a composite carrier, a precious metal component and an active metal component. The composite carrier is mainly composed of the following raw materials in parts by weight. Made of: 30-45 parts of attapulgite clay, 25-35 parts of metal oxides, 8-15 parts of polybutyl acrylate, 3-8 parts of methylcellulose, 5-10 parts of fatty acid diethanolamide, phthalate 5-10 parts of formic acid; the added amount of the precious metal component accounts for 0.0005-0.001% of the mass of the attapulgite clay based on the mass of the precious metal element, and the added amount of the active metal component accounts for the mass of the attapulgite clay based on the mass of the active metal element 0.01‑0.02%. The composite catalyst prepared by the invention has a large specific surface, stable structure, and good photocatalytic performance. It can effectively remove formaldehyde in the environment. The preparation method is simple and convenient, and can be applied to industrial production.

The invention provides a method for removing burrs or burrs at the beginning of a thread of a workpiece by a numerically controlled lathe, comprising the following steps: after turning a thread on a workpiece, returning a turning tool to the starting point of the final cutting stroke of the thread; The amount of burr removal; thread interpolation is performed according to the original cutting parameters of the thread, the thread is turned and the turning tool is positioned to the actual starting point of the thread; the chamfering direction along the starting section of the thread is based on the maximum lead of the sharp-edged helix. Equal lead thread interpolation for turning burrs or burrs. The method for removing the burrs or burrs at the beginning of the thread of the workpiece by the CNC lathe can accurately remove the foundations of the burrs or the burrs, and does not need to change the tool, thus saving the trouble of changing the tool.

A method for quickly removing a thermal spray coating, the sandblasting material adopts alloy sand with a particle size of 0.5-5.0mm, special-shaped alloy sand with an aspect ratio of 1.0-5.0 and ceramic sand with a mesh of 10-50, the alloy sand, special-shaped The mass ratio of the three raw materials of alloy sand and ceramic sand is (1~4):(1~4):1; before sandblasting, first pour the three raw materials into the iron bucket at the same time to facilitate the mixing of raw materials , and then pour the mixed sand in the iron bucket into the sand tank for sandblasting, the blasting air source pressure is 0.5‑0.9MPa; the present invention optimizes the composition of sand grains, increases the air source pressure, and greatly shortens the old coating Removal time, compared with single ceramic sandblasting to remove old coatings, the time is reduced by 60-75%, while reducing production costs, realizing the economical and efficient removal of old coatings, suitable for various metals, alloys, and cermet coatings layer removal.