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

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 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 througha 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 separationof 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.

The invention discloses an oxygen-producing hydrogel and a preparation method and application thereof. The oxygen-producing hydrogel comprises photosynthetic microalgae and biodegradable hydrogel, andby wrapping the photosynthetic microalgae with the hydrogel good in biocompatibility, the oxygen-producing hydrogel is formed; the photosynthetic microalgae in the hydrogel performs oxygen producingby means of photolysis of water, the local oxygen yield is increased so as to improve the anoxic microenvironment of the location, and then the curative effect of treatment of hypoxic diseases is enhanced. Due to protection of the gel, the photosynthetic microalgae can keep the oxygen activity in the body for a long time, and the requirements of long-time repeated oxygen supply for the hypoxic diseases are met.

The invention relates to a black and odorous river sludge bottom modifier as well as a preparation method and a use method thereof. The black and odorous river sludge bottom modifier is prepared by mixing the following raw materials in percentage by weight: 20%-40% of zeolite powder, 20%-40% of CaO, 1%-10% of CaSO4 or hydrate thereof, 1%-10% of Ca (NO3) 1, 1%-10% of KMnO4, 1%-10% of EDTA, 1%-10% of sodium peroxycarbonate, 10%-30% of PAC and 10%-20% of PAM, wherein the percentages add up to 100%. The calcium peroxide in the formula provides oxygen for the water body to improve the anoxic environment of the water body; and the zeolite powder is combined with polyaluminium chloride and polyacrylamide to adsorb and fix eutrophication substances such as ammonia nitrogen and total phosphorus, sothat the quality of overlying water is improved, the sediment environment is thoroughly changed, the propagation and growth of microorganisms and aquatic animals in the water body are promoted, and the ecological system of the water body is rapidly repaired. The novel black and odorous river sludge bottom modifier disclosed by the invention is wide in raw material source, low in price and remarkable in black and odorous water body treatment effect, and has good popularization and application prospects.

The invention discloses a photodynamic therapy agent for relieving tumor hypoxia as well as a preparation method and application thereof, and belongs to the technical field of medicines. The photodynamic therapy agent is a metal-organic framework nano composite material loaded with O2. The metal-organic framework nano composite material is metal-organic framework nano particles Zr-TCPP (Fe), the interiors of nano frameworks of the nano particles Zr-TCPP (Fe) are modified with perfluorooctanoic acid, and meanwhile glucose oxidase GOx is further adsorbed in pore channels of the nano particles Zr-TCPP (Fe). According to the invention, a drug delivery system capable of catalyzing tumor to endogenously generate O2 is designed while O2 is delivered to tumor tissue, so that the hypoxic environment can be remarkably improved, and the photodynamic therapy effect is enhanced. In addition, the synthetic steps of the therapy agent are relatively simple, and the yield is relatively high; and a synthetic method is simple and relatively low in cost, so that the method is suitable for large-scale production.

The invention discloses a preparation method of enzyme-supporting bismuth selenide nanoparticles to release oxygen upon exposure to light, and relates to the field of synthesis in pharmaceutical chemistry, in particular to a method, including the steps, such as synthesizing hollow mesoporous bismuth selenide, synthesizing enzyme-supporting bismuth selenide, and loading perfluorocarbon. The preparation method of the enzyme-supporting bismuth selenide nanoparticles to release oxygen upon exposure to light comprises the specific steps of (1) synthesizing bismuth selenide through a hydrothermal process; (2) synthesizing glucose oxidase adsorbed to hollow mesoporous bismuth selenide shells by means of an ion adsorbing process; (3) filling bismuth selenide cavities with perfluorocarbon through an ultrasonic process, and filling with oxygen. A composite nano-drug delivery system acquired herein has the advantages of precision control of oxygen release, good photothermal properties, good biocompatibility and the like.

The invention designs an intensive deep decontamination and denitrification treatment system and method for domestic sewage. The intensive deep decontamination and denitrification treatment system comprises an ultra-deep anaerobic pond, a tidal flow constructed wetland and a land enhanced filtration system, wherein the ultra-deep anaerobic pond is mainly used for precipitation and hydrolyze acidification reaction to remove particulate pollutants and macromolecular organic pollutants; the tidal flow constructed wetland adopts a tidal upward flow operation mode for water feeding, improves the activity of microbes and further improves removal of the pollutants; the land enhanced filtration system is formed by stacking two stages of structures which are isolated by water-tight non-woven geotextile in the middle, filler of a first-stage filtration system comprises soil, grass carbon and/or coarse sand and gravel sequentially from top to bottom, and filler of a second-stage filtration system comprises coarse sand, the grass carbon and/or coarse sand and the gravel sequentially from top to bottom. The intensive deep decontamination and denitrification treatment system has the advantages of high treatment load, good decontamination and denitrification effects, low treatment cost and simplicity in operation.

The invention discloses an iron-based nano catalytic treatment reagent and a preparation method and application thereof, the iron-based nano catalytic treatment reagent comprises nanoparticles, and the nanoparticles are obtained by reaction of Fe metal ions, 6-thioguanine and Meso-tetra (4-carboxyphenyl) porphin according to a molar ratio of 2: 1: 1-3: 2: 2. The iron-based nano-catalytic treatment reagent prepared by a hydrothermal method is a nano-catalytic drug, shows relatively strong catalytic ability, and can catalyze hydrogen peroxide to generate oxygen and improve a hypoxic environment of tumors; meanwhile, the reagent has the properties of peroxidase mimicase and can be used for catalyzing the generation of highly oxidative hydroxyl radicals in cancer cells to induce apoptosis of the cancer cells, 6-thioguanine contained in the reagent can be used for tumor chemotherapy, and Meso-4-(4-carboxyphenyl) porphine can be used for tumor photodynamic therapy. the preparation method is simple and convenient, wide in raw material source, low in cost, repeatable and suitable for industrial production and application.

The invention discloses magnetic heat triggered cascaded enzyme reaction supermolecular gel and a preparing method and application thereof. The preparing method includes the steps of mixing an oxygen-rich PFOB nano-emulsion with glucose-loaded PLGA nano-capsules to form a solution A, adding alpha-cyclodextrin, glucose oxidase and mannitol to an Fe3O4@PEI solution to obtain a solution B, and mixingthe solution A with the solution B to obtain the magnetic heat triggered cascaded enzyme reaction supermolecular gel. The prepared gel has the shear thinning injection and temperature-sensitive reversible phase transformation properties, and the multi-stage structure of the gel can carry glucose, oxygen, glucose oxidase and mannitol; after the gel is injected into tumor tissue, ferroferric oxidenano-particles generate heat under the alternating magnetic field, the tumor tissue is heated, and the liquefying and dispersing of the gel are promoted, so tumor cell gaps are filled with the gel; meanwhile, the ferroferric oxide nano-particles as similar peroxidase participate in subsequent cascaded enzyme reaction to generate free radicals ROS, and the duplex functions of magnetic induction thermal therapy and nano-enzyme catalysis treatment are realized.

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 provides an air freshener. The air freshener is prepared from, by weight, 5 parts of preservatives, 5 parts of mould inhibitor, 5 parts of edible alcohol, 6 parts of cinnamomum camphora extract, 6 parts of agastache rugosus extract, 5 parts of lactic acid, 6 parts of honey, 5 parts of olive oil, 20 parts of gelidium amansii extract, 10 parts of urea peroxide, 10 parts of wormwood extract and 10 parts of water. The air freshener can slowly release oxygen and natural aroma, the fragrance is fresh and elegant, and the air freshener has the effects of killing and inhibiting microorganisms, mold and fungi, and improving the anoxic environment and the human anoxia and has the health-care effect. The air freshener is free of toxins, environmentally friendly, capable of continually volatilizing, low in production energy consumption, little in residue and very safe to use. The air freshener keeps air clean, eliminates latent harmful gases and odors in the home environment, and creates a healthy, comfortable and vibrant atmosphere.

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.