52results about How to "Increase the amount of dissolved oxygen" patented technology

The invention relates to a combined apparatus for advanced treatment of high concentration organic waste water. The apparatus comprises a pretreatment buffer tank, an anaerobic reactor, a pressurized aeration stirring system, a photocatalytic reactor, a filter chamber, a backwashing system, a back flow line pipe system and the like. Preliminary treatment of high concentration organic waste water is carried out by using an anaerobic method after waste water is pretreated, then advanced treatment of primary treated water is carried out by using a photocatalysis method, and furthermore, effluentis filtered with the filter chamber. The apparatus provided in the invention can both profoundly remove high concentration organic matters and ferro-manganese ions in waste water and prevent secondary pollution, has the advantages of small energy consumption, high efficiency, a good effect and the like, is applicable to treatment of high concentration organic waste water and can guarantee stable and highly efficient water yielding and the quality of reused water.

The invention discloses an artificial wetland system with strengthened denitrification and dephosphorization, which consists of three parts: a regulation and hydrolysis tank, a water dripping oxygenator and an artificial wetland. The regulation and hydrolysis tank is arranged on the front part, an artificial wetland tank is arranged on the rear part, and the water dripping oxygenator is arranged on the joint of a water outlet of the regulation and hydrolysis tank and the artificial wetland tank. During the operation, sewage enters the regulation and hydrolysis tank for anoxic hydrolysis first, flows to the water dripping oxygenator for natural oxygenation after the treatment, and then enters the artificial wetland to remove organic matters through wetland fillers and plants and then is drained. The system uses lightweight concrete to process into an intermediate-layer filler of the artificial wetland, and upper-layer filler is gravel and lower-layer filler is pebble in the artificial wetland; compositions of the wetland plants orderly are canna, reed and herb of glomerate galingale; and the water dripping oxygenator uses three-dimensional elastic filler. Through the treatment of the system, the removal rate of COD, ammonia nitrogen and TP of the sewage can reach more than 85 percent; and the system has stable treatment effect and does not need power in winter.

The invention relates to the machinery technical field and provides a frame type high efficiency impeller of an impeller aerator. A key technology that a circular ring frame is combined with angle set shovel-shaped or spoon-shaped blades with holes is adopted; angles which are formed between lower water shifting plates and upper water guiding plates are 90 to 160 degrees; the inner sides of the lower water shifting plates and the upper water guiding plates are provided with inner water guiding plates and the outer sides of the lower water shifting plates and the upper water guiding plates are provided with outer water guiding plates in a perpendicular mode to form the blades; the inner ends of radiation supports are fixed connected with a shaft disk and the outer ends of the radiation supports are fixedly connected with a circular ring to form a transmission connection plate; the plane which is formed by being close to the fixed joint of the outer ends of the radiation supports and the circular ring is fixedly connected with the lower water shifting plates to form 30 to 90 degrees of angles; meanwhile the radiation supports are fixedly connected with the inner water guiding plates to form 20 to 90 degrees of angles or angles in 90 to 135 degrees outward; shaft holes of the shaft disk are fixedly connected with power shafts. The frame type high efficiency impeller of the impeller aerator is used for performing aeration on a fish pond and is simple and reasonable in structure, long in service life, stable and reliable in effect, small in power, easy to manufacture and low in cost.

The invention discloses an eutrophicated river water quality purifying method. The method comprises the following steps of: intercepting eutrophicated river into upstream, midstream and downstream parts; then conveying water of the upper part into an electrolyzing machine to be electrolyzed; then, discharging the electrolyzed water into the midstream part to be subjected to aeration treatment at the midstream part; and finally, flowing the water subjected to the aeration treatment to the downstream part. The eutrophicated river water quality purifying method adopts a method for firstly electrolyzing and secondly aerating, and can effectively inhibit the growth of algae in the water and an anaerobic reaction of a water body; an organic matter is decomposed, and total nitrogen, total phosphorus and chromaticity in the water are reduced and the odor is removed, so as to improve the river water quality and recover a water ecological system in a shorter time. The invention further discloses a river water quality purifying device, comprising a rubber dam, a water pump, the electrolyzing machine and an aeration device. The river water quality purifying device can be directly mounted in a river to directly purify river water; and the river does not need to be specially leaded to a pre-set structure to be treated, and the river water quality purifying device nearly does not change an environment, so that the influences to a natural environment are smaller.

The invention discloses a device and method for denitrifying flue gas of a coking furnace by using citric acid as a catalyst. The device comprises a cooling device, a desulfurization device and a denitration device. The method for denitrifying flue gas of the coking furnace by using the device comprises the following steps of cooling the flue gas of the coking furnace three times; desulfurizing the flue gas of the coking furnace; carrying out first-stage denitration on the flue gas of the coking furnace; carrying out second-stage denitration on the flue gas of the coking furnace; and discharging the purified flue gas. The method disclosed by the invention is safe, reliable, high in denitration and absorption efficiencies, little in influences to the suction force of a chimney, free of waste liquid discharge and capable of reducing the operation cost at the desulfurization stage; the obtained product does not contain poisonous ammonium sulphate; and the contents of SO2, NO and NO2 in the discharged flue gas are far lower than the national flue gas discharge standard.

The invention discloses a fluidized bed photocatalytic three-dimensional electrolytic reactor and application thereof and belongs to the technical field of sewage treatment. The fluidized bed photocatalytic three-dimensional electrolytic reactor comprises an electrolytic bath, a cathode, an anode, a particle electrode and a direct current power supply, wherein the cathode, the anode and the particle electrode are arranged in the electrolytic bath, the electrolytic bath comprises a cylindrical electrolytic reaction zone, a funnel-shaped solid-liquid separation zone and a water and gas distribution zone, the funnel-shaped solid-liquid separation zone is fixedly connected to the upper part of the electrolytic reaction zone, and the water and gas distribution zone is connected to the lower part of the electrolytic reaction zone; the cathode is a cylindrical stainless steel mesh and arranged circularly on the inner wall of the electrolytic reaction zone; the anode is a thin-walled stainless steel cylinder, and the tubular ultraviolet light source irradiation area in the stainless steel cylinder is a photocatalytic reaction zone; the particle electrode is a spherical particle photocatalytic electrode. The fluidized bed photocatalytic three-dimensional electrolytic reactor is used for treating degradation-resistant organic wastewater, has the advantages of high treatment efficiency, stable operation and the like and has a wide market application prospect in the degradation-resistant organic wastewater treatment aspect.

The invention belongs to the field of sewage treatment, and provides a nitrogen removal method for a denitrification filtering pool based on short-cut denitrification and anaerobic ammonia oxidation.Urban sewage treatment achieves advanced nitrogen removal generally through a process which combines the traditional A2O technology and the denitrification filtering pool. The nitrogen removal methodfor the urban sewage denitrification filtering pool based on the short-cut denitrification and the anaerobic ammonia oxidation is characterized in that inoculation of anaerobic ammonia oxidation sludge and denitrification sludge is carried out during a starting stage of the denitrification filtering pool; during an operating stage, an ammonia nitrogen and nitrate nitrogen online monitoring deviceis mounted at a water inlet end of the denitrification filtering pool, and the aeration quantity of an A2O biochemical pool is adjusted so that a ratio of nitrate nitrogen to ammonia nitrogen in waterentering the denitrification filtering pool is 0.9 to 1.1; and a carbon source is added into the denitrification filtering pool according to a C/N ratio of 2.5 to 3.0, the short-cut denitrification occurs in the filtering pool to produce nitrite nitrogen, and anaerobic ammonia oxidation reaction further occurs, so that the advanced nitrogen removal of a system is finally achieved, and the dosageof the carbon source in the denitrification filtering pool and the aeration quantity of the traditional nitrification system are reduced.

The invention relates to a method for treating a land with domestic sewage at a water-source forest land of a mountain area, which is formed by connecting two stages of land treatment units of a horizontal undercurrent wet land and a vertical undercurrent wet land in series, wherein the two stages of land treatment units are of the step shape in a buried form; a water distribution device for preposition hydrolysis-acidification pre-treatment is arranged at the front end of the horizontal undercurrent wet land; the yielding water of the vertical undercurrent wet land is directly spouted into an ecological reservoir. The method effectively removes COD, BOD, SS, heavy metal, ammonia, nitrogen and phosphorus in the sewage and can realize self oxygenation without power; the sewage can be well biodegraded, and the modified soil is taken as the main filler of the wet lands, thereby effectively avoiding that the traditional artificial wet land is easy to be blocked by the filler. The treatment method has the advantages of low construction cost and operating cost, easy management, good sewage treatment effect and strong impact-load resistance.

The invention discloses a device for efficiently purifying eutrophic water. The device comprises a suspension frame, a suspension barrel, a dialysis space ring, an inner barrel, a water pump, a water draining pipe, a filler and an aerating device, wherein the suspension frame which is coincided with the axis of the suspension barrel is arranged on the upper part of the suspension barrel; the dialysis space ring is coaxially arranged in the suspension barrel so as to divide the suspension barrel into a purifying filtering barrel and an inner barrel, wherein a water feeding hole is formed in the suspension barrel wall of the purifying filtering barrel; the purifying filtering barrel is filled with the filler; the water pump is arranged in the inner barrel, and is connected with the outside through the water draining pipe; the aerating device is arranged at the top of the suspension frame and is connected with the purifying filtering barrel through an air pipe. According to the device, the filler adsorbing culturing microorganism is arranged in the purifying filtering barrel and the microorganism is utilized to degrade and purify the pollutants in water, so that the purposes of gradually purifying water and recovering excellent aquatic ecological environment of water are achieved, the anti-pollution impact capacity of water is enhanced, the water eutrophication is effectively controlled and the original ecological recovering and self-cleaning of water are realized.

The invention relates to the field of sewage treatment, in particular to an aeration nozzle for sewage treatment. The aeration nozzle has an annular flange-shaped pedestal, a gas-supply jet pipe and a gas-liquid mixing guide pipe, wherein the pedestal is provided with a support bracket; the gas-liquid mixture guide pipe is fixed on the support bracket; the gas-supply jet pipe is arranged in the guide pipe and the nozzle of the gas-supply jet pipe extends out of the guide pipe in the radial direction; the gas-liquid mixture guide pipe is of an inverse waist drum type and unfolds after gradually shrinking from the top to the bottom; the ratio of the lower opening to the upper opening of the guide pipe is 3:1; a gas-supply nozzle is of an annular structure made of a hollow pipe with the diameter of 25mm; and the nozzle of the gas-supply jet pipe is a gas nozzle with the diameter of 2mm and is arranged on the surface of the gas-supply jet pipe. The aeration nozzle prevents sediment from silting and settling at the bottom, increases oxygen dissolved in water, enlarges gas-liquid contact area, and quickens the dissolution of gas in the water.

The invention discloses water body ecological restoration apparatus powered by solar energy and employing oxygenation activation by micro-oxygen filaments. The apparatus mainly comprises solar photovoltaic plates (1), a floating body device (2), a control system (3), a fan (4), a battery (5), pipelines (6), micro-oxygen filament assemblies (7), spiral plates (8), a fixed support (9), and support columns (10). Under the coordination of high-efficiency energy-saving aeration, the micro-oxygen filament assemblies, the circulating spiral plates and various microorganisms of aerobiotic, facultativeand anaerobic microorganisms, the device provided by the invention can be used to decompose harmful substances, inhibit the propagation of harmful algae and fungi, and increase the oxygen of the water body indirectly. Multiple effects increase the amount of dissolved oxygen in the water body, remove toxic and harmful substances and eutrophication materials in the water body, remove peculiar smellin the water, purify the water quality, and realize the ecological restoration of the polluted water body.

The invention provides an oxygen-enriched breeding device and an oxygen-enriched breeding method for micro-oxygen bubble rice and relates to the technical field of oxygen-enriched breeding of rice. The breeding device comprises a breeder, wherein a micro-bubble cavitation pipe is arranged at a water inlet in the bottom of the breeder; and at least two micro-bubble cavitation tanks are arranged inthe micro-bubble cavitation pipe. The oxygen-enriched breeding method for micro-oxygen bubble rice comprises processes of shunt, diffusion and oxygen enrichment. According to the oxygen-enriched breeding device and the oxygen-enriched breeding method for micro-oxygen bubble rice disclosed by the invention, the breeding water is subjected to micro-oxygen bubble treatment, the dissolved oxygen in water is increased, germination of seed rice and growth of the root system are met, and the germination rate and survival rate of oxygen-enriched breeding of the rice are improved.

The invention relates to a turbine blade type water quality purifying device which comprises the components of a main frame (10) of a purifying part loading part; more than one suspension member (20)which is mounted in the main frame and makes the main frame suspend on the water surface through filling liquid at the inner part; a motor (31) which is mounted in the main frame and is started afterreceiving electric power, two sides in the axial direction are mounted on the main frame for supporting a rotatble bearing and furthermore one side is connected with a rotatable shaft (32) which rotates in the motor so that one part of the rotating shaft submerges to water for forming turbine blade type water quality purifying part (30) of a pluralityi of mixing circulating blades (33) which convey, mix and purify the water; an air compressor (50) which supplies compressed air; a nano bubble machine (70) which generates oxygen bubbles in water for purifying; and an OH-free radical generator (60) which performs sterilization on in-water pollutants through generating OH-free radical water through generating ozone.

The invention discloses a method for promoting uranium ore leaching by applying a magnetic field. The method comprises the steps that (1) a leaching solution is magnetized through a pipeline, a magnetic field generator is arranged outside the pipeline, and the leaching solution is any one of an acid leaching solution, an alkaline leaching solution or a neutral leaching solution; and (2) the magnetized leaching solution is introduced into a liquid injection drill hole to be injected into an underground uranium ore layer, and then solute is lifted to the earth surface through a liquid extraction hole away from the liquid injection drill hole by a preset distance. According to the scheme, more dissolved oxygen can be provided for the oxidation leaching process of uranium, and therefore the oxidation leaching process is enhanced, blockage of calcium sulfate crystals to a leaching solution seepage channel can be reduced, and the migration capacity of the solute is improved.