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.

A method to purify eutrophication water body mainly purifies the eutrophication water body through the combination technics of micro-bubble air flotation and biological contact oxidation. The present invention is characterized in that micro-bubbles with a diameter in the range of 80 nm to 500Mu m which can stay 2 to 10 minutes in the water body are injected in more closed water bodies like lakes and pools and an organism reactor provided with helix fillers is arranged at the exits of the micro-bubbles. As the organism reactor contains a mixed mycelium of nitrosomona, nitrosobacteria and denitrifying bacteria, the present invention can not only play a role of decontamination and denitriding, the micro-bubbles can be able to be carriers of microorganisms that can lead the mixed mycelium to float to the surface. Simultaneously, the present invention takes a floccule formed of algaes, suspension corpuscles and water-solubility pollutants adhered on the micro-bubbles as the nutrient source to degrade the pollutants in water, thereby reaching the goal of purifying the water body with high efficiency.

The invention relates to an ecological remediation system and method for black and odorous water. The ecological remediation system comprises an artificial ecological floating bed which may float on water; various aquatic plants are fixed the ecological floating bed; a carbon fiber filler is hung below the ecological floating bed, and an aerating pipe at the bottom of the black and odorous water is arranged below the ecological floating bed; one end of the aerating pipe is connected with a micro-nano bubble generator. The ecological remediation system for black and odorous water is simple in structure, convenient to use and maintain and low in energy consumption, allows dissolved oxygen and redox level in the water to be quickly increased, can purify organic pollutants in the water throughthe synergy of aquatic plants and microbes in the filler, and can provide a shelter, a food site and other resting place for various aquatic animals; therefore, diversity of aquatics is improved, self-cleaning capacity of water can be enhanced, water transparency is improved, and water odor is eliminated.

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 method for leaching copper in a waste printed circuit board by means of acidithiobacillus ferrooxidans. According to the method, the acidithiobacillus ferrooxidans is promoted to leach the copper in the waste printed circuit board through two-stage dissolved oxygen control. The method for leaching the copper in the waste printed circuit board by means of the acidithiobacillus ferrooxidans comprises the steps that firstly, the acidithiobacillus ferrooxidans obtained after copper resistance domestication is completed is cultured under the low dissolved oxygen condition till the acidithiobacillus ferrooxidans growth mass approaches the maximum value; secondly, waste printed circuit board powder is added to an acidithiobacillus ferrooxidans culture system, the content of dissolved oxygen in the acidithiobacillus ferrooxidans culture system is increased after the waste printed circuit board powder is added, and the copper in the waste printed circuit board is leached by means of the acidithiobacillus ferrooxidans under the high dissolved oxygen condition. By the adoption of the method, the acidithiobacillus ferrooxidans concentration and the copper leaching rate are both maximized, and the overall leaching time is greatly shortened.

The invention provides a water purification method and direct drinking station equipment. The water purification method comprises the first step of strong magnetization treatment, wherein water is pretreated through a magnetizer; the second step of composite filtration, wherein filtration above 5 micrometers and filtration above one micrometer are involved; the third step of RO filtration, wherein micron-size or nanoscale reverse osmosis membranes are adopted for filtration; the fourth step of ultraviolet sterilization or ozone sterilization preservation; the fifth step of mineralization and postposition of composite filter elements. According to the water purification method, the multi-stage filter elements and RO membranes are adopted for filtration, tap water can be filtered, sediment, rust, bacteria, algae microorganisms, heavy metal, organic matter, chlorine and peculiar smell in tap water can be effectively removed, the water hardness is low, the mineral content in water is high, small molecular groups are formed in water, and water is easy to absorb.

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 a microporous aeration-biology-ecological floating bed integrated device and a method for treating a black and odorous water body by applying the device and belongs to the technical field of sewage treatment of industrial wastewater. The integrated device comprises an aerator, a floating bed body, an ecological float bowl, elastic filler groups, micro-porous aeration tubes, a protecting net, immobilized microbe pellet groups and aquatic plants, wherein the elastic filler groups and the immobilized microbe pellet groups are alternatively distributed; one row of micro-porous aeration tubes are arranged at each of the bottom and the middle part of the protecting net; micro-porous aeration discs are arranged on the micro-porous aeration tubes. The device is used for treating the black and odorous water body, so that the treatment efficiency of the water body can be improved for a long term, the content of dissolved oxygen and aerobic microbial biomass in the water body are enabled to be within a normal range, and further the problem of pollution of the black and odorous water body is thoroughly solved.

The invention mainly discloses a water quality processing system of flood-diversion area wetland, and a construction method thereof. The water quality processing system of flood-diversion area wetland comprises a water flow baffle provided with an adsorption layer, an aeration pipe, and a microorganism purification device; the aeration pipe comprises an aeration main pipe and aeration branch pipes; the aeration branch pipes are arranged in a net-shaped manner; aeration devices are arranged on the aeration branch pipes; the aeration devices comprise connecting pipes, main aeration heads, and assistant aeration heads; the microorganism purification device comprises a floating body, a microbiological culture media, a delivery pipe, and microorganism tanks; the lower side of the floating body is provided with a fixing device; the microorganism tanks are connected with the microbiological culture media via the delivery pipe. In construction, construction preparation is carried out firstly, installation of the water flow baffle and the aeration pipe is carried out, and processing using the microorganism purification device is carried out, most pollutants in water can be absorbed, peculiar color, peculiar smell, and foreign matters in lakes can be reduced, oxygen content of water body is increased, appropriate microorganism is provided for water body, and water body self cleaning capacity is increased.

The present invention relates to a pond purifying system for improving the water quality for the pond water; the system uses the water supplied by a pump (P) sprayed into the pond so as to increase the solution oxygen content in the pond water; the device is characterized in that: the pond purifying system comprises: an outtake mouth (5) connecting to the deep level of the pond and an absorbing tube (3) between the pump (P); the device transfers the liquid provided by the pump (P) to a supply tube (4) of the whole pond; a plurality of connecting tubes (9) are connected to the center direction of the pond according to some distance along the supply tube; a wave nozzle (7) of an air absorbing tube (6) communicating with the air is arranged on the center, which is also connected on the front end of the connecting tube (9). The system is with much lower installation fee and operation fee and much better water-purifying effect; the system can manage the water quality of the pond more effectively.

The invention provides a controllable siphon alternating-type fish and vegetable co-existing system. The controllable siphon alternating-type fish and vegetable co-existing system comprises an aquaculture system, a control system, an alternating-type water circulating system and a gravel planting bed system; a water inlet position is arranged at one side of a fishpond, and a water outlet positionis arranged at the bottom of the other side of the fishpond; the gravel planting bed system comprises a gravel planting bed, a water supply side is arranged at one side of the gravel planting bed, andis located at the same side as the water outlet position of the fishpond, a water return side is arranged at the other side of the gravel planting bed, and is located at the same side as the water inlet position of the fishpond, and the water outlet position of the fishpond is connected with the water supply side of the gravel planting bed through a siphon pipe and a water supply pipe. By means of the controllable siphon alternating-type fish and vegetable co-existing system, an alternating water circulating structure is adopted, dissolved oxygen is added when water flows past the gravel planting bed, when flowing past the fishpond, the water is continuously fed to fish, the whole process is free of residue of pesticide and drugs, and the water quality is suitable for the existence of thefish and plants, so that the fish does not easily get sick in a high-density environment, and the yield is greatly increased.

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 a domestic fungus liquid spawn culture method and a medium thereof; the method comprises the following steps: a, providing micro-nano bubble water and medium raw materials of preset quantity, adding the medium raw materials into the micro-nano bubble water so as to obtain the bacterial strain medium, wherein the medium raw materials comprise bacterial strain culture needed carbon source, nitrogen source and inorganic salt; b, planting domestic fungus bacterial strain into the bacterial strain medium for the culturing process. The micro-nano bubble water is employed to replace tap water in the configuration of liquid spawn medium, and the novel medium is used for culturing the domestic fungus bacterial strain; compared with a conventional liquid spawn culture method, the novel method can obviously improve liquid spawn yield.

Disclosed is a water quality purification method for a eutrophicated river, comprising the follow steps: first, blocking a eutrophicated river and forming an upstream part, a midstream part, and a downstream part; then entering the water in the upstream part into an electrolysis machine for electrolysis; discharging the electrolyzed water into the midstream part, and performing aeration treatment; lastly, letting the aerated water flow into the downstream part. By using a method of an electrolysis process and an aeration process in sequence, the algae growth in the water and the anaerobic reactions in the water body are effectively inhibited, organic matters are decomposed, the total nitrogen, total phosphorus, and color of the water are lowered, odors are eliminated, river water quality is improved within a relatively short period, and the water ecological system is restored. Also disclosed is a river water quality purification device, comprising a rubber dam, a pump, an electrolysis machine, and an aeration device. The device can be directly installed in the river and can directly purify river water without the need to guide the river into a pre-set structure for treatment. The present invention makes almost no change to the environment, and therefore has a relatively small impact on the natural environment.

The invention discloses a method for purifying seriously eutrophic river water. The method mainly comprises three steps of electrolyzing, aerating and treating by a membrane bioreactor (MBR). According to the method, the pollution problems of the seriously eutrophic river can be effectively solved, the water quality of the river is improved in shorter time, so that a water ecology system is recovered, and the healthy sustainable development of a river ecology system is achieved. The invention further discloses a device for purifying the seriously eutrophic river water, which is matched with the purification method. The device comprises a dam, an electrolysis machine, an aerating device and a membrane bioreactor. According to the invention, the landscape can be combined and directly installed along the bank of the river, and the environment is hardly changed, so that the influence about the natural environment is less; in addition, the device has a simpler structure and lower production cost, and is suitable for large-scale popularization and application.

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 provides an enhanced phosphate removal and sludge reduction type sewage treatment apparatus. The apparatus comprises an integrated biological reaction tank, a sidestream chemical phosphate removal crystallization unit and a secondary sedimentation tank. The apparatus integrates biological flocculation sedimentation, mainstream biological phosphate removal coupled sidestream chemical phosphate removal, simultaneous nitrification and denitrification nitrogen removal and sludge in-situ reduction, treats high-concentration organic load in a short time, has the advantages of good sludge output, good nitrogen and phosphate removal effect, high impact resistance and simple treatment process, and is a municipal sewage treatment apparatus for effectively treating abnormal inlet water.

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 provides a device and a method for irrigating rice crops with micro oxygen bubble magnetized water and belongs to the technical field of crop irrigation. According to the micro oxygen bubble magnetized water irrigation rice crop device, a micro bubble cavitation pipe is arranged on a waterway inlet, a micro bubble cavitation tank is arranged behind the pipe and connected with an aerator, and by matching the three components, the oxygen content of irrigation water can be increased. The method for irrigating rice crops comprises processes of shunting, diffusing and aerating, ordinary irrigation water is oxygen-enriched by virtue of diffusing and aerating, and the fertilizer dissolution rate in the irrigation water is enhanced by virtue of magnetization. According to the irrigation device and irrigation method, oxygen supplement of the rice root system can be solved, the problem of root rot of the rice is effectively solved, and the utilization rate of nutrients in the chemical fertilizer is improved.

The invention discloses a liquid dynamic surface fermenting tower. A top cover (2) is arranged on a tower body (1) to form a cylindrical fermenting tower; two support posts (3) vertical to the tower bottom are arranged on both ends of the fermenting tower in the diameter direction; two lifting chains (5) in cross arrangement with the support posts (3) are arranged in the fermenting tower; a groupof shafts (4) are horizontally and movably arranged on the support posts (3) hierarchically; segmental liquid receiving disks (6) are arranged on the shafts (4); the arc vertexes of the segmental liquid receiving disks (6) are connected with the lifting chains (5) through chain rings (14); and the round notches of the liquid receiving disks are alternately arranged in reverse direction. The invention is a continuous fermenting device between surface standing fermentation and liquid-state subsurface fermentation. The liquid keeps sufficient contact with the air in the tower by arranging the liquid dynamic surface, and the liquid temperature can be transferred fast and uniformly through circulation, thus shortening fermentation period and improving fermentation efficiency.

The invention proposes a device for irrigating rice crops with magnetized water with micro-oxygen bubbles and a method for irrigating rice crops with magnetized water with micro-oxygen bubbles, which belong to the technical field of crop irrigation; The micro-bubble cavitation pipe is set, the micro-bubble cavitation tank is arranged behind the pipe, the micro-bubble cavitation pipe is connected with the aerator, and the cooperation of the three can realize increasing the oxygen content of the irrigation water; the method for irrigating rice crops includes diversion and In the process of diffusion oxygenation, ordinary irrigation water is enriched with oxygen through diffusion oxygenation, and the dissolution rate of fertilizer in irrigation water is enhanced through magnetization; this irrigation device and irrigation method can solve the problem of promoting oxygen supplementation of rice roots and effectively preventing rice roots from rotting. And improve the utilization rate of nutrients in chemical fertilizers.

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.