3results about How to "Strong specific surface area" patented technology

The application belongs to the technical field of water treatment agents, and particularly relates to a multifunctional composite water purifying agent and a preparation method thereof, which comprises the following raw materials in parts by weight: multifunctional water purifying powder 90-100 parts, bentonite 8-10 parts, sodium carboxymethyl cellulose 0.5-1.5 parts, sodium percarbonate 0.5-1 part and sodium citrate 0.5-1 part; the multifunctional water purifying powder comprises core layer material and shell layer slurry; the multifunctional water purifying agent of the application takes the multifunctional water purifying powder with a core-shell structure as a core, cooperates with bentonite, sodium carboxymethyl cellulose, sodium percarbonate and sodium citrate, realizes efficient and synchronous removal of heavy metals, organic matters, colority and microorganisms, and has the advantages of wide spectrum, stability and easy recovery.

The invention provides a bimetallic composite catalyst as well as a preparation method and application thereof. The preparation method comprises the following steps: smelting flue gas is subjected to plasma strengthening and then is in contact with the bimetallic composite catalyst; the smelting flue gas contains chlorobenzene and / or dioxin; under the condition that the smelting flue gas contains chlorobenzene, the concentration of the chlorobenzene in the smelting flue gas is 50-500ppm; under the condition that the smelting flue gas contains the dioxin, the concentration of the dioxin in the smelting flue gas is not higher than 20 ng TEQ / m < 3 >. The technical problems that in the common technology, the degradation efficiency of CVOCs such as chlorobenzene is insufficient, and synchronous and efficient degradation of chlorobenzene and dioxin is difficult to achieve at the same time are solved, efficient mineralization of chlorobenzene is achieved through multi-path coupling, and meanwhile efficient adsorption and deep degradation of dioxin are synchronously achieved.

This invention discloses a process for preparing modified silica from vanadium ore leaching tailings, belonging to the field of industrial waste treatment and utilization technology. The steps include: (1) non-grinding alkaline leaching of silica: vanadium ore leaching tailings are leached without grinding with sodium hydroxide and water in a certain ratio and then heated for leaching; after cooling, the residue and filtrate are obtained by solid-liquid separation, and the filtrate is water glass; (2) preparation and modification: self-composite electrolyte is added to water glass, and a new combination modifier is added, followed by acid neutralization to produce silica gel precipitate, which is dried and ground to obtain modified silica product; the electrolyte includes 60% to 80% sodium sulfate and 20% to 40% sodium carbonate by mass percentage; the modifier includes 40% to 80% hexadecyltrimethylammonium bromide and 20% to 60% sodium dodecyl sulfate by mass ratio. The process of this invention can turn the vanadium acid leaching tailings from clay vanadium ore into a valuable resource, achieving reduced treatment and resource utilization, while also producing high-quality silica products.