33results about How to "Improve hypoxic environment" patented technology

The invention discloses a dual-sludge denitrification dephosphorizing and denitrifying A / A-O device which mainly comprises a primary precipitation pool, an anaerobic-anoxic device, a secondary precipitation pool, a middle pool, a biological aerated filter and a clear water pool, wherein the primary precipitation pool is connected with an anaerobic zone of the anaerobic-anoxic device, a degassing zone of the anaerobic-anoxic device is connected with the secondary precipitation pool, and the secondary precipitation pool is connected with the anaerobic zone of the anaerobic-anoxic device through a sludge pump; the outflow water of the secondary precipitation pool is connected to the middle pool, the middle pool is connected with the biological aerated filter, and the biological aerated filter is connected with the clear water pool; and the clear water pool is connected with the anaerobic-anoxic device. By the process adjustment, denitrifying phosphorus accumulating bacteria becomes dominant bacteria of an AAO unit. The dual-sludge denitrification dephosphorizing and denitrifying A / A-O device realizes the separation of phosphorus accumulating bacteria and nitrobacteria, the separation of the precipitation function and the sludge storage function of the secondary precipitation pool, and the separation of the nitrification function and the filtering function of the biological aerated filter, thereby realizing energy conservation of a combined system, stability and efficiency in denitrification and dephosphorization, and sludge reduction.

A shipborne submarine sediment restoring device is provided.A restoring device body is connected with a towing vessel through a towing rope.The shipborne submarine sediment restoring device comprises a bottom plate, and an exhaust assembly and a drainage assembly mounted on the bottom plate; the exhaust assembly comprises an aerating pipe and a plurality of microporous aerating heads, the aerating pipe is provided with a gas inlet, and the microporous aerating heads and the aerating pipe form a communicated line; the drainage assembly comprises a water pipe, the water pipe is provided with a water inlet, a plurality of outflow pipes in communication with the water pipe are transversely arranged along the length of the water pipe, and a plow tooth is connected below each outflow pipe; a through jet line is formed in the back of a plow, and an inlet of the jet line is in communication with the outflow pipes; a delivery pipe comprises a water delivery pipe and a gas delivery pipe, an inlet of the water delivery pipe and an inlet of the gas delivery pipe are located on the side of the towing vessel, and an outlet of the water delivery pipe and an outlet of the gas delivery pipe are in communication with the water inlet and the gas inlet, respectively.The plow teeth stir up submarine soil when the towing vessel moves forward, forming turbid water, and gas and water are introduced to seabed respectively through the aerating pipe and the water pipe to react with the seabed turbid water, thus restoring the seabed.

The invention discloses a polypyrrole / manganese dioxide-methylene blue nanocomposite particle and a preparation method thereof, belonging to the technical field of nanocomposite materials. In the present invention, the polypyrrole / manganese dioxide nanocomposite particles are directly prepared by in-situ redox reaction between the polypyrrole inner core and potassium permanganate, and after the photosensitizer methylene blue is loaded, the polypyrrole / manganese dioxide-methylene blue nanocomposite is finally obtained. Particles with a particle size of 69‑72nm. The nanocomposite particles have good photothermal conversion ability and singlet oxygen generation performance, and have good killing ability to cancer cells under laser radiation, indicating that they can be used as effective photothermal and photodynamic combined therapy materials. The invention prepares the polypyrrole / manganese dioxide nano-composite particles by directly mixing the polypyrrole nano-particles with potassium permanganate, and rapidly reacts to prepare the polypyrrole / manganese dioxide nano-composite particles. The process does not require additional reducing agent, avoids the use of large-scale instruments, and is simple and easy to operate. Fast response, green and environmentally friendly.

The invention discloses a method for restoring eutrophic water body, which comprises the following steps: 1. The eutrophic water body restoration medicament is prepared by using water, oxygen release agent, biomass charcoal powder, compound bacterial agent, alkali agent and binder. ; Second, the application of chemicals to eutrophic water bodies. The eutrophication water body restoration method of the invention has the advantages of high removal rate, low cost, environmental friendliness and the like, and can efficiently and lastingly restore the eutrophication water body.

The disclosure relates to the technical field of biomedical materials, specifically a cascade enzyme-like nanosystem for promoting diabetic wound healing and its preparation method and application. The nanosystem includes metal oxide nanoparticles and glucose modified on the surface of the metal oxide oxidase. A cascade-like nanomaterial was obtained by modifying glucose oxidase onto the surface of metal oxide nanoparticles, which was used to regulate the microenvironment of diabetic infected wounds and promote their rapid healing.

The domestic sewage intensive deep decontamination and denitrification treatment system and method designed by the present invention include an ultra-deep anaerobic pond, a tidal flow artificial wetland, and a land enhanced infiltration system, wherein the ultra-deep anaerobic pond mainly performs precipitation and The hydrolysis and acidification reaction removes particulate pollutants and macromolecular organic pollutants; the tidal flow artificial wetland adopts the tidal upflow operation method to enter water, which increases the activity of microorganisms and further improves the removal of pollutants; the enhanced land infiltration system consists of two stages The structure is superimposed, and the middle is separated by impermeable non-woven geotextiles. The filler of the first-stage infiltration system is from top to bottom: soil, peat and / or coarse sand, gravel, and the filler of the second-stage infiltration system From top to bottom: coarse sand, peat and / or coarse sand, gravel. The invention has high treatment load, good decontamination and nitrogen removal effects, low treatment cost and simple operation.