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

The invention discloses a sewage treatment device for an enhanced denitrification A / A / O (Anodic Aluminum Oxide) and deoxygenation BAF (Biological Aerated Filter). The sewage treatment device mainly comprises a sludge denitration pool, an AAO denitrification and dephosphorization device, a settling pond and the BAF, wherein a water inlet pipe is respectively connected to anaerobic zones of the sludge denitration pool and the AAO denitrification and dephosphorization device; the sludge denitration pool is connected with the anaerobic zone of the AAO denitrification and dephosphorization device; the aerobic zone of the AAO denitrification and dephosphorization device is connected with the settling pond; and the settling pond is connected with the sludge denitration pool and connected to the BAF. A sewage treatment method comprises the following steps of: performing denitrification and dephosphorization on sewage through the sludge denitration pool and the AAO denitrification and dephosphorization device to remove COD (Chemical of Demand); converting ammonia nitrogen into nitrate nitrogen through the BAF; and supplying an electron acceptor to the AAO device, and removing COD, N, P and SS. The sewage treatment device has the advantages of energy saving, stability, high denitrification and dephosphorization efficiency and sludge reduction.

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 present invention relates to a black and odorous river sludge bottom modifier and its preparation and use methods. The black odorous river sludge bottom modifier is formed by mixing the following raw materials by weight: zeolite powder 20%-40%, CaO 2 20%-40%, CaSO 4 or its hydrate 1%-10%, Ca(NO 3 ) 2 1%‑10%, KMnO 4 1%‑10%, EDTA 1%‑10%, Sodium Percarbonate 1%‑10%, PAC 10%‑30%, PAM 10%‑20%, total 100%. The calcium peroxide in the formula provides oxygen to the water body and improves the oxygen-deficient environment of the water body; the zeolite powder combines with polyaluminum chloride and polyacrylamide to adsorb and fix eutrophic substances such as ammonia nitrogen and total phosphorus, improve the quality of the overlying water, and completely change the The sediment environment can promote the reproduction and growth of microorganisms and aquatic animals in the water body, so as to quickly restore the water body ecosystem. The novel black and odorous river sludge bottom modifier of the invention has a wide range of raw materials and low price, and the utilization of the novel black and odorous river sludge has a remarkable effect in treating black and odorous water, and has a good prospect of popularization and application.

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 invention relates to the technical field of biological remediation of organic polluted soil, in particular to a strengthening remediation method and device for a bioreactor. The three-in-one windpower integration device comprises a leachate reciprocating distribution system, a power supply system and an electrolyte nutrient supply system pipeline; and the leachate reciprocating distribution system is arranged at the bottom of the device, the power supply system is composed of at least one electrode group of a sandwich-liked structure, and the electrolyte nutrient supply system is composedof the electrolyte nutrient supply system pipeline and an intermediate layer electrolyte nutrient supply system pipeline. According to the method and the device, the cathode design of a wind power integration mode effectively improves the anoxic environment at the bottom of a reactor body, so that secondary pollution is avoided and organic pollutants are thoroughly removed through the leachate circulation design, the remediation efficiency of the bioreactor technology on the organic polluted soil is effectively improved, and the method is an effective realization method for strengthening application of the bioreactor repair technology.

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 invention discloses a nitration denitrificatoin and filter method and a nitration denitrification and filter device for a double-sludge series-connection aeration biofilter. The nitration denitrification and filter device is mainly composed of a water inlet system, a first section aeration biofilter, a second section aeration biofilter and a clean water tank, wherein the first section aeration biofilter is divided into a denitrification zone and a decarburization zone, suspended biological carriers serving as fillers are arranged in the denitrification zone, the second section aeration biofilter is connected with the decarburization zone of the first section aeration biofilter through a gas-water separator arranged in a middle water layer, and the second section aeration biofilter is divided into a nitration zone and a nitration deoxidization filter zone. The nitration denitrification and filter method comprises that denitrification and aerobic decarburization of waste water are respectively achieved through the denitrification zone and the decarburization zone of the first section aeration biofilter, ammonia nitrogen is converted into nitrate nitrogen through the second section aeration biofilter, electron acceptors are provided for the denitrification zone of the first section aeration biofilter, and chemical oxygen demand (COD), nitrogen (N) and suspended solid (SS) areremoved. The system nitration denitrificatoin and filter method and the nitration denitrification and filter device for the double-sludge series-connection aeration biofilter can achieve function separation of denitrification, decarburization and nitration and have the advantages of saving energy, being stable and denitrifying efficiently.

The invention discloses a secondary air regulation method for a W-flame monotube boiler. The regulation method is characterized in that burner secondary air ventilation doors in two lateral areas of a hearth are opened wider; the secondary air ventilation doors are opened in such a manner that the front arch of the hearth is 5-10% higher than the rear arch of the hearth; and the opening degrees of the secondary air ventilation doors are set in a triangular form, wherein the opening degree of the secondary air ventilation door in the central area of the hearth is highest, and the opening degrees of the secondary air ventilation doors of the two lateral areas are sequentially decreased. According to the secondary air regulation method and structure for a W-flame monotube boiler, the problems of anoxic burning in the central area of the boiler hearth, uniform air supplementing from the front and rear arches and slagging in the two lateral areas are improved; and the burning efficiency of coal powder and the safe, stable and economic operation of the set are further enhanced.

The invention discloses a eutrophic water body restoration medicament and its preparation method and application. The medicament is composed of water, an oxygen release agent, biomass carbon powder, a composite bacterial agent, an alkali agent and a binding agent. The eutrophication water restoration agent of the invention has the advantages of high removal rate, low cost, environmental friendliness and the like.

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.