3 results about "Birnessite" patented technology

The application belongs to the field of environmental governance, and provides a water sodium manganese ore-oxygen releasing agent composite type sediment repair material and a preparation and application method thereof, which comprises modified oxygen releasing agent, water sodium manganese ore, microbial flora and embedding matrix, the embedding matrix comprises calcium alginate, polyvinyl alcohol and water cross-linked formed hydrogel, wherein the microbial flora comprises domesticated aerobic denitrification and phosphorus removal mixed flora.The water sodium manganese ore-oxygen releasing agent composite type sediment repair material utilizes the photoelectric catalytic activity of water sodium manganese ore and the oxygen releasing ability of oxygen releasing compound, improves the oxidation-reduction potential of sediment, enhances the sustained degradation ability of organic pollutants, cooperatively removes nitrogen pollutants in water environment, enhances the in-situ repair effect of sediment, is applied to sediment repair, and is more efficient, environment-friendly and has long-term effect.

The invention discloses a device and a method for degrading manganese and SMZ in surface water by an illumination intensified aeration fluidized birnessite and algae substance coexisting system. The device comprises a raw water tank, a membrane bioreactor, an aeration strip, an aeration pump and an effluent collecting tank, the raw water tank provides raw water for the membrane bioreactor, the membrane bioreactor comprises a tank body, a ceramic membrane, birnessite and a light source, the aeration strip is arranged in the tank body, the ceramic membrane is vertically arranged in the tank body and located above the aeration strip, the interior of the ceramic membrane is a cavity which is a purification area, birnessite is dispersedly placed in the raw water area, and the light source illuminates the tank body; bubbles generated by the aeration strip drive water flow to flow upwards, birnessite is in contact with raw water and is adsorbed and oxidized in the process, manganese and SMZ are removed in combination with lighting, the raw water enters a cavity of the ceramic membrane after being purified, and the cavity is communicated with an effluent collecting tank. The method has a good removal effect on manganese ions and SMZ, effluent can be used for distributed drinking water facilities, and the method has practical significance.

The present invention relates to composite beads coated with H-Birnessite layered manganese oxide with a sheet nanostructure, the average thickness of the sheets being between 1 and 50 nm, and the length L of the sheets being between 0.2 μm and 3 μm, as well as the manufacturing method thereof and a cell for producing said composite beads. The present invention also relates to the use of such beads in treatments for decontaminating fluids containing toxic elements such as heavy metals or organic pollutants.