36results about How to "Facilitate adsorption removal" patented technology

The invention discloses a core-shell type magnetic mesoporous nano-microsphere as well as a preparation method and application thereof. The method comprises the following steps: (1) moistening, solidifying and carbonizing a FeOx@nSiO2@mSiO2 template in a carbon-source solution to prepare a mesoporous carbon/FeOx@nSiO2@mSiO2 composite, wherein the FeOx@nSiO2@mSiO2 template is a core-shell type mesoporous nano-microsphere taking a silicon dioxide coated iron oxide as a core and mesoporous silicon dioxide as a shell, and the iron oxide is ferroferric oxide or ferric oxide; and (2) performing a reaction between the mesoporous carbon/FeOx@nSiO2@mSiO2 composite and sodium hydroxide to prepare the core-shell type magnetic mesoporous nano-microsphere. The core-shell type magnetic mesoporous nano-microsphere prepared in the invention has the advantages of quickness, convenience, large adsorption volume and less dosage in adsorbing and removing microcystin in water, so that a quick and convenient way is provided for water pollutant removal.

The invention relates to a strain of achromobacter xylosoxidans GD03 with oxidation effect and methylation effect on inorganic trivalent arsenic, and a preliminary application in repair of seedling-stage paddy rice arsenic poisoning. The strain was preserved in China General Microbiological Culture Collection Center (CGMCC) at Jan 26th, 2013, and has a preservation number of CGMCC No. 8512. The achromobacter xylosoxidans of the invention is characterized in that the achromobacter xylosoxidans GD03 with oxidation effect and methylation effect on inorganic trivalent arsenic is obtained by enrichment and separation from arsenic-polluted simulated rice field soil. The strain can oxidize inorganic trivalent arsenic in arsenic-polluted environment into pentavalent arsenic, has methylation effect, greatly reduces the toxicity of trivalent arsenic with high toxicity in the environment, and enhances the adsorbable removing property of arsenic pollutants.

The invention discloses a high-calcium-aluminum slag ball. The high-calcium-aluminum slag ball comprises metallic aluminum (Al), aluminum oxide (Al2O3), silicon dioxide (SiO2), calcium fluoride (CaF2), calcium oxide (CaO), water (H2O) and other inevitable impurities. The component of the slag ball comprises, by weight, 48 parts to 52 parts of the metallic aluminum, 9 parts to 9.9 parts of aluminum oxide, 4 parts to 5 parts of silicon dioxide, 5 parts to 10 parts of calcium fluoride, 20 parts to 24.9 parts of calcium oxide and 0.2 part to 0.5 part of water. When low-carbon steel is smelted, in the steel tapping process, a certain number of high-calcium-aluminum slag balls are added, and therefore, the soluble aluminum proportion in molten steel can be greatly improved, and the contents of ferric oxide and manganese oxide are reduced, and cleanness of the molten steel is improved; and by means of the high-calcium-aluminum slag balls, the deoxidization effect is good, steel slag fluidity is improved, the slag remanufacturing requirement of the refining process is met, and meanwhile, the production cost can be reduced.

Relating to the technical field of nitrogen-containing sewage treatment, the invention provides a carbon nanotube/hydrotalcite material for removal of nitrate nitrogen from water and a preparation method. The method includes: conducting in-situ generation of a lanthanum-doped hydrotalcite layer on the pipe wall of a multiwalled carbon nanotube by coprecipitation, and employing a cationic surfactant cetylpyridine bromide for surface modification of the hydrotalcite layer, thus obtaining the carbon nanotube/hydrotalcite material for removal of nitrate nitrogen from water. According to the preparation method provided by the invention, hydrotalcite is loaded on the pipe wall of the multiwalled carbon nanotube, thus increasing the specific surface area of hydrotalcite and exposing more active sites, and rare earth metal lanthanum is also employed for doping, lanthanum undergoes complexing with NO3<-> to form a stable polyamine complex. Further, cetylpyridine bromide is employed for surfacemodification, thus reducing the electronegativity of the hydrotalcite surface, and providing more active sites for adsorption of NO3<->. Therefore, the carbon nanotube/hydrotalcite material has a goodremoval effect on nitrate nitrogen in water.

The invention relates to the technical field of electrolytic copper foil manufacturing and processing, in particular to electrolytic copper foil manufacturing and processing equipment. The electrolytic copper foil manufacturing and processing equipment comprises a bottom plate, a conveying mechanism, a water spraying mechanism, a brushing mechanism and a drying mechanism, and a winding mechanism is arranged in front of the drying mechanism. According to the electrolytic copper foil manufacturing and processing equipment, the water spraying mechanism sprays water from the position above a copper foil for cleaning, a cleaning brush is driven by a conveying belt on the brushing mechanism to brush the copper foil, the cleaning brush on the conveying belt continuously brushes the copper foil, the contact area between the cleaning brush and the copper foil is increased, impurities adhering to the copper foil can be effectively cleaned, and the phenomenon that the cleaning effect of the copper foil is poor is avoided; and meanwhile, the adopted drying mechanism can dry a sponge layer for wiping the copper foil, so that the sponge layer can effectively adsorb water stains on the copper foil, and the situation that the water stains are still remained when the copper foil is wound is avoided.

The invention relates to a method for preparing micropore activated carbon through semi-dried silaging straw. The method comprises the following steps of: (1) taking fresh plant straw, crushing the taken plant straw to 20-30mm, airing the crushed plant straw until the water content is 40-55%, and performing semi-dried silaging; (2) drying the semi-dried silaged straw to reach constant weight, performing crushing, and putting the crushed straw into phosphoric acid for impregnation; (3) putting the impregnated straw into a muffle furnace for carbonization activation, and performing cooling; and (4) performing washing with deionized water until the pH value is neutral, performing suction filtration, and performing drying so as to obtain the micropore activated carbon. According to the method disclosed by the invention, requirements for a semi-dried silaging technique adopted by the method are low, the operation is easy, the production technology is simple, the production cost is low, the prepared micropore activated carbon has many micropores which can reach 78.2%, the adsorptive property is good, acidic functional groups exist, and the adsorption and the removal of pollutants such as antibiotics and the like are facilitated.

The invention discloses a fire prevention and monitoring device for mountainous areas and belongs to the technical field of fire prevention monitoring. The fire prevention and monitoring device comprises a monitoring tower and an operation room fixedly connected to the monitoring tower. A wind speed and direction sensor and a windmill are mounted on the operation room; a lifting plate is fixedly connected to the side wall of one side of the monitoring tower; a tower body protection mechanism consisting of a tower bottom fireproof cover and a fireproof isolation layer is arranged at the bottomend part of the monitoring tower; the tower bottom fireproof cover and the fireproof isolation layer have a certain fireproof isolation effect on the tower body. An exhaust pipe arranged on an environment monitoring box is communicated with a blast protective cover arranged on a thermal imaging camera and air guided out from the environment monitoring box is guided out from the inner wall of the blast protective cover and a flow guide pipe and a heating mechanism are used for cooperation, so that a lens end face of the thermal imaging camera is effectively cooled or an icing layer and frost onthe lens end face are effectively removed through gas, and thus the thermal imaging camera is protected to a certain extent.

The invention belongs to the technical field of aquaculture, and particularly relates to a circulating type fish culture device. According to the circulating type fish culture device, a fish tank unit for culturing fishes and a sedimentation tank unit for circularly purifying water in the fish tank unit are used for removing suspended matters and bacteria in the culture wastewater and finally recycling the culture wastewater, meanwhile, a rain unit with a double-layer structure is arranged, the suspended matters in the discharged wastewater are preliminarily mixed and pass through holes with adjustable sizes, and large-particle suspended matters in the wastewater are crushed into the small-particle suspended matters in the mixing process, so that the adsorption removal in the sedimentation tank in the next step is facilitated. The device has the advantages that aquaculture water resources can be recycled, the wastewater discharged into the environment is reduced, ecological balance of the surrounding environment can be maintained, meanwhile, the device is reasonable and effective in structural arrangement, suspended pollutants in aquaculture wastewater are pretreated, filtration or the adsorption removal is facilitated, and the risk of blocking a filter is reduced.

The invention relates to a method for treating sweet potato wastewater, which comprises the following steps: alkalifying sweet potato wastewater with sodium hydroxide, adding a flocculant polyaluminum chloride powder, stirring, adding a hydrogen peroxide solution, stirring, carrying out disinfection and sterilization on the wastewater by ozone generated by mass decomposition of hydrogen peroxide under the irradiation of ultraviolet light in sunlight or artificial ultraviolet light, inhibiting further mildewing and fermentation of the waste water and the waste residues, then adding polymer powder, stirring to form a flocculated state, adding pulverized coal, stirring and dispersing to accelerate flocculating settling, and compressing the volume of a precipitate. The technical scheme is adopted, so that disinfection and sterilization can be synchronously performed in the settling and purifying process of the waste water, and mildewing and fermentation of the waste water and the waste residues are inhibited; the traditional long-time precipitation treatment is not needed, the flocculent precipitation volume is not compressed, and the flocculent mud volume is reduced by 1/3.

According to the system for dredging the clogging of the goaf at the water inlet of the underground reservoir and reducing the salinity of the effluent, the carbon dioxide waste gas is input into the underground reservoir in a pulse mode and a continuous mode, so that the clogging area at the water inlet is dredged, the purification capacity of the underground reservoir on mine water is improved, and the salinity of the effluent of the reservoir is reduced. The system comprises: a carbon dioxide exhaust gas storage unit for providing carbon dioxide exhaust gas; the waste gas pulse conveying pipeline is connected between the carbon dioxide waste gas storage unit and the underground reservoir and used for conveying the carbon dioxide waste gas to the underground reservoir, and the gas outlet end of the waste gas pulse conveying pipeline extends into the underground reservoir and is located below the water inlet; and the pneumatic booster pump is connected with the waste gas pulse conveying pipeline and can output the carbon dioxide waste gas in the waste gas pulse conveying pipeline in a pulse manner.