97 results about "Oxygen utilization rate" patented technology

The utility model relates to a biological fluidized bed tower-type water treatment system, which belongs to the technical field of sewage treatment, and comprises a tower body, the interior of the tower body is divided into an aerobic zone, an anoxic zone and a settling zone through an inner cylinder wall, a flow guide wall and a mud bucket wall, and a gas lifting device is arranged to communicate the interior of the aerobic zone with the interior of the anoxic zone. According to the present invention, the anoxic tank, the aerobic tank and the secondary sedimentation tank are organically combined to form the highly integrated tower reactor, and the occupied area is small compared with the traditional biochemical process; the biological fluidization system is higher in sludge concentration, can tolerate higher salinity, higher COD (Chemical Oxygen Demand) and higher nitrogen-containing wastewater, and is higher in load impact resistance; the oxygen utilization rate of the biological fluidized bed system is improved by 50% compared with that of traditional aeration, the sludge backflow and nitrification liquid circulation of the biological fluidized bed system synchronously adopt the gas stripping technology, a sludge backflow pump and a nitrification liquid backflow pump are reduced, and the operation energy consumption of the system is greatly reduced.

The invention discloses a water treatment device of an MABR membrane aeration bioreactor and a treatment method of the water treatment device, and relates to the field of sewage treatment.The water treatment device comprises a vertical frame body, oxygen permeation membranes are evenly arranged in the vertical frame body, and first communicating pipes are arranged at the front ends and the rear ends of the oxygen permeation membranes; the surface of the first communicating pipe at the rear end fixedly communicates with a first conveying pipe, the first communicating pipe is used for conveying oxygen to the oxygen permeation membrane, the first communicating pipe is connected with the vertical frame body through a movement assembly, and through double-form switching of the movement assembly, the oxygen permeation membrane is driven to conduct cyclic twisting and swinging, so that the oxygen permeation membrane is driven to conduct oxygen permeation. The contact of oxygen between the surface of the oxygen-permeable membrane and the microbial biological membrane is enhanced, the oxygen utilization rate is increased, the motion state of the membrane is dynamically adjusted, the self-cleaning capacity of the membrane is enhanced, and sludge deposited on the outer surface of the oxygen-permeable membrane is digested while the acceleration mechanism continuously swings at the bottom of the oxygen-permeable membrane to accelerate the contact of the oxygen-permeable membrane and pollutants in water.

The invention relates to the field of intelligent vehicles, and discloses a vehicle-mounted intelligent oxygen supply system and method, a vehicle and a storage medium. The system comprises a signal acquisition module used for acquiring an original respiration signal of a user; the AI processing module is used for preprocessing the original breathing signal to obtain a preprocessed breathing signal, extracting breathing characteristics of the user from the preprocessed breathing signal, learning the breathing characteristics of the user by utilizing a preset machine learning model, predicting a breathing mode of the user and generating a corresponding control signal; and the oxygen supply execution module is used for adjusting oxygen output parameters according to the control signal and outputting corresponding oxygen flow according to the oxygen output parameters. Through cooperation of all the modules, the technical effects that the oxygen utilization rate is greatly increased, the use comfort is remarkably improved, and breathing health is monitored in real time are achieved.

The invention provides a method for determining flow channel parameters of a fuel cell stack, which comprises the following steps of: acquiring variables such as flow field plate size dispersion difference, diffusion layer compaction non-uniformity and sealing element springback difference in a manufacturing process, and disturbance data such as load fluctuation, gas temperature and humidity, environment air pressure change and the like in an operating environment; establishing a joint uncertainty set; setting channel width, rib width, channel depth, group parameters and the like as to-be-optimized runner parameters, constructing a performance index set including pressure drop, saturation, temperature gradient, voltage fluctuation, oxygen utilization rate and the like, and setting a corresponding opportunity constraint confidence threshold; building a mapping relation among parameters, uncertainty and performance based on a water, gas, heat and electricity multi-physical coupling model, and forming a random coupling evaluation model; and solving a target parameter combination through an opportunity constraint optimization algorithm. The average performance and the robustness are considered, and the consistency, the reliability and the mass production of the fuel cell runner design can be improved.

The invention provides a green gold extraction system adopting a microorganism air synergistic oxidation method, and relates to the technical field of microorganism gold extraction. The system is mainly composed of a photovoltaic power generation and energy storage power station, an oxidation air compressor, an air conditioner, a stirring air compressor, a multi-stage gas oxidizer, a tail gas absorption mechanism and the like. Under the condition that the requirement for the gold extraction effect of microbial oxidation pretreatment is met, the whole system abandons a complex mechanical structure of a heat exchanger and a turbulent flow plate arranged in a traditional mechanical stirring tank, air oxidation, air heat exchange and multi-stage air replacement stirring are adopted, and the problems of dissolved oxygen amount, temperature and homogenization which need to be controlled by microbial oxidation are solved. In addition, due to the large-diameter design of the closed normal-pressure oxidation tower body, the oxygen utilization rate is high, and heat dissipation of the tower body is good; no complex heat exchanger system and mechanical transmission are arranged inside, so that mechanical faults and maintenance difficulty are reduced, energy consumption is reduced, the structure is simple, and investment is reduced.

The invention relates to a continuous wet oxidation device for enhanced mass transfer treatment of high-salinity organic wastewater. The continuous wet oxidation device comprises a wastewater storage tank, a liquid inlet system, a high-pressure oxygen storage tank, a gas inlet system, a mass transfer enhanced reactor, a gas-liquid separation system and an oxygen recovery system, the mass transfer enhanced reactor is of a shell-and-tube structure and comprises a reactor shell and a built-in ceramic distributor; a tube pass is formed in the ceramic distributor, and a shell pass is formed between the ceramic distributor and the reactor shell; the tube pass is provided with a liquid feeding port and a liquid discharging port, and the shell pass is provided with a gas feeding port. Oxygen is distributed to a tube pass through the ceramic distributor and is quickly dispersed into micron-sized bubbles, so that the contact area between gas and liquid is increased, and the oxygen utilization rate and the reaction efficiency are improved.

The invention discloses a hydrogen fuel cell optimization algorithm based on particle swarm optimization of an integrated system, and belongs to the technical field of micro-grid energy management. An existing hydrogen fuel cell has the problems of low fuel utilization rate, slow response speed and the like under a dynamic load condition. In order to solve the problem, a hybrid energy system topology consisting of a photovoltaic (PV), a proton exchange membrane fuel cell (PEMFC), a lithium ion battery (BAT) and a super capacitor (SC) is constructed, and mathematical models, including a photovoltaic output power model, a fuel cell voltage model and a cell state-of-charge model, of all energy units are established. A PI controller is designed for a fuel cell, and a proportional gain KP and an integral gain KI of the fuel cell are dynamically adjusted through a particle swarm optimization (PSO) algorithm. Specifically, PI parameters are coded into particle position vectors, a multi-target fitness function is constructed, and hydrogen consumption, system stability and oxygen utilization rate are comprehensively considered; and a dynamically adjusted inertia weight mechanism is adopted to guide particle search, and iterative optimization is realized. After optimization, parameters are written into a PI controller in real time, and the hydrogen and air flow is accurately adjusted. Meanwhile, a continuous monitoring mechanism is introduced, when the photovoltaic power fluctuation exceeds 10%, re-optimization is automatically triggered, and closed-loop control is formed. The method improves the fuel utilization rate and the reaction rate of the fuel cell, is suitable for the dynamic load micro-grid, and improves the overall efficiency and stability of the system.

The invention relates to the technical field of oxygen supply for tunnel engineering construction, and discloses a pressure-pumping circulation type oxygen supply system and method for high-altitude tunnel construction, and the oxygen supply system comprises an oxygen supply pipe (1) arranged in the length direction of a tunnel, a pressure-in type air pipe (2) parallel to the oxygen supply pipe (1), and a pumping-out type air pipe (3) connected to the pressure-in type air pipe (2); an oxygen supply outlet pipe section (101) is formed at the end, facing the tunnel supporting face (4), of the oxygen supply pipe (1), and a plurality of oxygen supply small holes (102) are formed in the side wall of the oxygen supply outlet pipe section (101) at intervals. A closed-loop air circulation oxygen supply system is formed through the synergistic effect of a press-in type ventilation system and an extraction type ventilation system, so that the utilization efficiency of oxygen and the uniform distribution of the oxygen concentration in the tunnel are improved; the problems that in existing high-altitude tunnel construction, the oxygen supply efficiency is low, the oxygen utilization rate is low, and oxygen distribution is uneven can be effectively solved.

The application discloses a magnetic LDH biochar as well as a preparation method and application thereof, and belongs to the technical field of pollution prevention and control. The preparation method of the magnetic LDH biochar comprises the following steps: sequentially performing puffing treatment and pyrolysis carbonization treatment on iron-containing biomass to obtain magnetic biochar; mixing a magnesium salt solution and the magnetic biochar, and then performing hydrothermal reaction to obtain magnetic loaded iron-magnesium hydrotalcite biochar; mixing the magnetic loaded iron-magnesium hydrotalcite biochar and a nitrogen source, and then heating and doping to obtain the magnetic LDH biochar. The magnetic LDH biochar prepared by the application can adsorb dissolved oxygen around the carbon material, improve the mass transfer efficiency and dissolved oxygen utilization rate of microbial degradation of pollutants in the artificial wetland, rapidly enrich oxygen, increase the dissolved oxygen concentration of the water body, has the advantages of low energy consumption, difficulty in blocking, high nitrogen and phosphorus removal efficiency and the like, and when the magnetic LDH biochar is applied to the intermittent aeration artificial wetland, the nitrogen and phosphorus treatment performance of the artificial wetland can be effectively strengthened.

The invention discloses a high-load low-carbon sewage biological treatment process and device, and relates to the technical field of sewage treatment. According to the process, a process route combining anaerobic treatment, biological selection, biological enhancement and efficient aerobic treatment is adopted, aeration and an intelligent control system are integrated, and high-load and low-energy-consumption sewage treatment reaches the standard. The high-load low-carbon biological sewage treatment equipment comprises an anaerobic unit, a biological selection unit, a biological enhancement unit, a high-efficiency aerobic unit and a precipitation unit which are sequentially connected, the biological selection unit, the biological enhancement unit and the high-efficiency aerobic unit are integrally designed, and water flows of the units are sequentially connected in an overflow manner; the biological selection unit is provided with a first sludge pipe, a screening agent pipe and a mixing guide plate. The system disclosed by the invention can remarkably improve the treatment load of the system, improve the oxygen utilization rate, reduce the occupied area of the system, reduce the sludge yield and the overall operation cost, and is suitable for efficient low-carbon treatment and upgrading and reconstruction of newly-built urban sewage and industrial wastewater.

The utility model discloses movable sewage treatment equipment for black and odorous water in a rural closed pond, which comprises a container main body, the container main body comprises a treatment water tank and an equipment mounting chamber, a diesel generator, a power distribution cabinet, an oxygen generator and a medicament adder are arranged in the equipment mounting chamber, a circulating water pump is arranged in the treatment water tank, and the circulating water pump is communicated with the equipment mounting chamber. A water inlet, a water outlet and a dosing port are respectively formed in the side of the treatment water tank, the water inlet end of the circulating water pump is communicated with the water inlet, the horizontal height of the water outlet is greater than that of the water inlet, and an oxygen dissolving cone and an aeration mechanism are arranged in the treatment water tank. The oxygen generator is matched with an oxygen dissolving cone, a venturi ejector and the like, and oxygen and water are fully mixed by utilizing high pressure to form supersaturated dissolved oxygen water; the aeration mechanism sprays water into the water body through a special nozzle according to the preset pulse frequency and duration, the oxygen dissolution and diffusion efficiency is greatly improved, and compared with a traditional aeration mode, the oxygen utilization rate is increased by 40%-60%.

The invention relates to the technical field of non-ferrous metallurgy, in particular to a molybdenum concentrate oxygen-enriched roasting method and a roasted product, and in the method, corresponding oxygen-enriched air is input by adopting a segmented oxygen control strategy in each stage. According to the method, a segmented oxygen control strategy is designed, in the original multi-hearth furnace molybdenum concentrate oxidizing roasting process, rich oxygen is increased in roasting furnace layers, the dynamic oxygen content in the furnace layers is increased, the total amount of oxygen participating in an oxidizing reaction in roasting atmospheres in all the furnace layers is overall increased, the oxygen-rich atmospheres are manufactured in all the roasting furnace layers, and the oxidizing desulfurization rate of materials is overall increased; therefore, accurate distribution of oxygen is achieved, the oxygen utilization rate is increased, and the thermal load and energy consumption of equipment are reduced.

The invention relates to the technical field of medical equipment, and discloses an external oxygen supply method, an external-oxygen-free oxygen supply method and a quantitative oxygen supply method, and provides three core modes: in an external oxygen supply mode, redundant oxygen during extrusion is recycled and reused through a gas storage bag, and overpressure is prevented in combination with a pressure release valve; in the oxygen supply mode without external oxygen, pure manual extrusion air supply is achieved through a shell which can be replaced or arranged outside the air bag in a sleeving mode, and the device adapts to the oxygen-source-free environment; in the quantitative oxygen supply mode, the inflatable inner bag is arranged in the air bag to accurately limit the oxygen storage space in advance, and accurate control over the single tidal volume is achieved. According to the invention, the oxygen utilization rate is obviously improved, the use safety is guaranteed, and the application capability of the simple respirator in precise ventilation and emergency scenes is expanded.

The invention relates to the technical field of sewage treatment, in particular to a multi-stage vortex type continuous flow photocatalysis sewage treatment reactor which comprises a pretreatment assembly, a continuous flow photocatalysis assembly, a separation assembly and a carrier ball used for containing a catalyst which are sequentially connected in series in the flow direction of sewage. And a filter screen I is fixedly mounted in the pretreatment box. According to the multi-stage vortex type continuous flow photocatalytic sewage treatment reactor, the problems of mass transfer limitation and light shielding of a traditional reactor are thoroughly solved through a vortex flow field, the photocatalytic reaction rate and the pollutant removal rate are greatly increased, and frequent addition of an expensive catalyst is avoided through cyclic utilization of the catalyst; energy waste is avoided through stepped intelligent control; the oxygen utilization rate is greatly improved through aeration-vortex cooperation, and the aeration energy consumption is reduced.

The invention relates to the technical field of heat treatment of low-calorific-value solid waste, in particular to a fan retired blade treatment device and method.The treatment device comprises an oxidation furnace, a heating rod and a catalysis unit, a material chamber and a gas storage chamber which communicate with each other are formed in the oxidation furnace, and the material chamber is located above the gas storage chamber; the material chamber is communicated with the smoke exhaust pipe; the gas storage chamber is communicated with the gas inlet pipe; the heating rod is arranged in the material chamber and used for heating materials; the catalytic unit is arranged around the heating rod, and after the catalytic unit is heated by the heating rod, a catalyst in the catalytic unit is gasified and diffused into the material chamber. The device can improve the action efficiency of a catalyst, reduce the oxidation activation energy of resin and accelerate the smoldering reaction rate; the ventilation and heat preservation performance of the furnace body is optimized, the oxygen utilization rate is increased, and the unburned carbon residual rate is reduced; accurate dynamic regulation and control of the reaction process are achieved, the stable smoldering state is maintained, and the treatment period is shortened.

The application discloses a sewage treatment aeration device, and belongs to the technical field of sewage treatment. The aeration device comprises a tank body, a tank cover, a driving element, a rotating shaft, a sealing assembly, a gas supply assembly and a plurality of aeration assemblies. The driving element is arranged on the tank cover, the rotating shaft extends into the tank body and is in transmission connection with the driving element, a gas conveying channel is formed in the rotating shaft, a plurality of aeration assemblies are arranged on the rotating shaft, gas outlet pipes are arranged on the aeration assemblies, and end covers are arranged on the gas outlet pipes. The rotating shaft is in communication with the gas supply assembly, and the gas supply assembly is in communication with an external gas source. The plurality of aeration assemblies can stir the sewage in the tank body at multiple points, so that dissolved oxygen can uniformly diffuse to each region in the tank body, thereby improving the oxygen utilization rate and the decomposition efficiency of microorganisms on organic matters. The end covers can close the gas outlet pipes, thereby preventing the sewage from flowing back into the gas outlet pipes, significantly reducing the system maintenance requirement, and improving the practicality and long-term operation stability.

The application relates to the technical field of intelligent vehicle-mounted technology, in particular to a breathing synchronization intelligent vehicle-mounted oxygen supply control method and system, which comprises the following steps: emitting electromagnetic waves to passengers through a millimeter wave radar and receiving reflected echo signals; performing signal processing on the reflected echo signals to obtain periodic signal waveforms; identifying the inspiration stage and the expiration stage of the passengers based on the periodic signal waveforms; outputting an opening instruction in response to the identification of the inspiration stage; outputting a closing instruction in response to the identification of the expiration stage; and based on the analysis of the periodic signal waveforms formed by the passengers in a plurality of historical breathing cycles, predicting the starting moment of the next inspiration stage and outputting the opening instruction at a preset time point before the predicted starting moment of the inspiration stage. The oxygen utilization rate is greatly improved, so that a smaller-power oxygen generator or a smaller-capacity oxygen storage tank can be used under the condition of the same effective oxygen uptake, thereby reducing the system volume, weight, cost and energy consumption.

This invention discloses an intelligent, adaptive local oxygen supply system and its control method, belonging to the technical field of oxygen supply auxiliary equipment. The system includes an oxygen supply module, a target tracking module, an adaptive air delivery module, and a control module. The target tracking module acquires the spatial coordinate information of the user's face or nasal cavity area in real time; the control module generates a pointing command based on the spatial coordinate information, driving the adaptive air delivery module to perform displacement compensation, ensuring the oxygen jet direction is towards the target area. Furthermore, the system, through a respiratory rhythm monitoring module in conjunction with a throttle switch, closes the throttle switch during the exhalation phase and accumulates pressure in the buffer pressurization container; during the inhalation phase, it triggers the throttle switch in advance to release pressurized oxygen based on the airflow flight time difference calculated by the infrared ranging module, achieving synchronous coverage of the oxygen jet and the inhalation peak. This invention can automatically adjust the air delivery direction according to changes in the user's position and match the respiratory rhythm for intermittent pressurized oxygen supply, effectively improving oxygen utilization.

The application provides a kind of determination method of fuel cell stack flow channel parameter, method includes the following steps: collecting the dimensional dispersion of flow field plate in manufacturing process, diffusion layer compaction non-uniformity, sealing springback difference and other variables, and disturbance data such as load fluctuation, gas temperature and humidity, environmental pressure change in operating environment, establish joint uncertainty set;Set channel width, rib width, channel depth, group parameters as to be optimized flow channel parameters, construct performance index set including pressure drop, saturation, temperature gradient, voltage fluctuation, oxygen utilization rate, and set corresponding opportunity constraint confidence threshold;Based on water, gas, heat, electric multi-physical coupling model, the mapping relationship between parameters, uncertainty and performance is constructed, and a random coupling evaluation model is formed;Solve target parameter combination by opportunity constraint optimization algorithm.Considering average performance and robustness, the consistency, reliability and manufacturability of fuel cell flow channel design can be improved.

The present application provides a method and apparatus for switching oxygen supply mode, a device, and a storage medium. The method comprises: detecting a first respiratory pattern of a user when the turn-on of an intelligent mode is detected; determining a first oxygen supply mode according to the first respiratory pattern, and supplying oxygen according to the first oxygen supply mode; and detecting a second respiratory pattern of a user in the first oxygen supply mode, and determining whether to switch the first oxygen supply mode to the second oxygen supply mode according to the second respiratory pattern. Supplying oxygen according to the first oxygen supply mode comprises: determining a target operating level when the first oxygen supply mode is a pulse oxygen supply mode, and operating at the target operating level. The method achieves automatic switching between two oxygen supply modes according to user requirements and the automatic determination of the target operating level suitable for the user in the pulse oxygen supply mode, thus meeting the oxygen inhalation requirements of a user in different scenarios and improving the effect of use. The method can further augment the oxygen utilization rate, prolong the service life of the oxygen production device, and improve the cost-efficiency.

The utility model relates to the field of water treatment equipment, in particular to a rotational flow aeration type Fenton device. The utility model discloses a rotational flow aeration type Fenton device which comprises a Fenton reaction tower body, a water inlet is formed in one side of the bottom of the Fenton reaction tower body, a water outlet is formed in the top of the other side of the Fenton reaction tower body, a water collecting area is arranged in the middle of the Fenton reaction tower body, an aeration pipe is arranged in the water collecting area, and a rotational flow aerator is arranged at one end of the aeration pipe. According to the utility model, gas enters from the bottom of the spiral-flow aerator and is mixed with sewage, and in the spiral-flow aerator, the mixture of the gas and the sewage is cut and crushed for multiple times in the high-speed rotation process to form a large number of ultramicro bubbles. By utilizing a rotational flow principle, bubbles and sewage are fully mixed, and the dissolution rate, the mass transfer rate and the oxygen utilization rate of oxygen are increased. And meanwhile, the rotational flow can promote the suspension and mixing of the sludge and prevent the sludge from precipitating. According to the spiral-flow aerator, the aeration energy consumption is reduced through efficient gas dispersion and low-resistance design.

The application provides a kind of calcium gluconate co-catalytic production equipment and method, it is related to gluconate production equipment technical field.The device reaction chamber, reaction rotating cylinder, air pump, circulating flow guide pipe, injection pipe, driving device and circulating pump;Reaction rotating cylinder is set in reaction chamber, and reaction rotating cylinder is rotatably connected with driving device;Reaction rotating cylinder is rotatably connected with the top of reaction chamber;The top of reaction chamber is provided with suction port;Air pump is communicated with suction port;Circulating flow guide pipe's flow guide inlet is communicated with reaction chamber;The flow inlet of circulating flow guide pipe is connected with circulating pump;Injection pipe's injection inlet is connected with the flow outlet of circulating pump;Injection pipe's injection outlet corresponds with liquid inlet;Gas inlet is formed in the side wall of reaction chamber.The device can efficiently improve the contact effect of oxygen and solution, and effectively utilize the oxygen generated by reaction to achieve the effect of improving oxygen utilization rate.

The utility model relates to cement rotary kiln technical field especially is a kind of cement rotary kiln energy-saving ventilation device, including rotary kiln main body, air inlet subassembly and air outlet subassembly, the outside of rotary kiln main body is equipped with air inlet subassembly, in the utility model, by the shunt shell, air outlet, air duct, exhaust pipe, waste collection box and filter plate being set, the device can be evenly dispersed by shunt shell and air outlet to the kiln box inside heat air conveying from the two sides of heating device respectively, make heating device can make full use of oxygen in hot air, simultaneously by air duct, waste collection box, exhaust pipe constitutes bending exhaust passage, by filter plate, the impurities generated in calcination are intercepted in waste collection box, by the waste collection box of detachable, the device can be more conveniently cleaned to impurity make full use of oxygen in air, have higher air exchange efficiency and oxygen utilization, so that the device has higher fuel utilization and better calcination effect.

The invention discloses a phosphorus oxychloride preparation method based on a flat-plate membrane reactor, and belongs to the technical field of chemical processes and reactors. The reactor comprises a plurality of liquid chamber-gas chamber-liquid chamber functional units which are arranged repeatedly and heat exchange units located between the adjacent functional units, gas-liquid micro-interface contact is achieved through a porous hydrophobic membrane, and oxygen reacts with phosphorus trichloride in a molecular diffusion mode. According to the method, the reaction temperature is controlled to be 70-95 DEG C, the oxygen pressure is controlled to be 0.01-0.05 MPa, and the heat exchange medium is combined for circulating heat transfer, so that efficient utilization of oxygen is realized, and the reaction process is mild and controllable. The continuous operation of 3-5 reactors connected in series is supported, the oxygen utilization rate can be remarkably improved, the raw material consumption is reduced, the product purity is improved, continuous production is supported, and the method is suitable for large-scale synthesis of phosphorus oxychloride.

The utility model discloses a dispersing device for a single nozzle of a flash furnace. The dispersing device comprises a distributor inner sleeve, an air ring and a distributor cone, the bottom end of the distributor inner sleeve is connected with the distributor cone; the top end of the air ring is connected with the distributor cone; the air ring comprises an air hole, a guide blade and a concave-convex clamping groove; the bottom ends of the air holes are connected with guide blades; a plurality of air holes and a plurality of guide blades are uniformly distributed on the air ring; the concave-convex clamping grooves are positioned at the upper and lower ends of the air ring; the air ring is connected with the distributor cone through the concave-convex clamping groove; the distributor cone is provided with a clamping block matched with the concave-convex clamping groove. The guide blades are inclined; compressed air in the inner sleeve of the distributor is sprayed out in a dispersed and rotating mode through the air holes and the guide blades on the air ring, it is ensured that materials are evenly and continuously dispersed, the mixing efficiency and strength of oxygen-enriched air and raw and auxiliary materials in the flash furnace are improved, and therefore the oxygen utilization rate is improved, the smoke dust occurrence rate is reduced, and the service life of the flash furnace is prolonged. And therefore, the overall operation efficiency, stability and economical efficiency of the flash furnace are improved.

The application provides a kind of microbial air synergic oxidation method green gold extraction system, and relates to the technical field of microbial gold extraction.The system is mainly composed of photovoltaic power generation and energy storage power station, oxidation air compressor, air conditioner, stirring air compressor, multistage gas oxidizer, tail gas absorption mechanism and the like.Under the guarantee of the effect of microbial oxidation pretreatment gold extraction, the whole system discards the complex mechanical structure of the built-in heat exchanger and turbulence plate in the traditional mechanical stirring tank, adopts air oxidation, air heat exchange and multistage air replacement stirring, solves the problems of dissolved oxygen content, temperature and homogeneity required to control microbial oxidation.In addition, the large height-diameter design of the closed normal pressure oxidation tower body makes the oxygen utilization rate high and the tower body heat dissipation good;there is no complex heat exchanger system and mechanical transmission inside, so that the mechanical failure and maintenance difficulty are reduced, the energy consumption is reduced, and the structure is simple and the investment is reduced.

The invention relates to a method for improving the oxygen utilization rate of oxygenation stirring in a zinc leaching iron precipitation process, and relates to the technical field of oxygenation stirring. The method comprises the following steps: a) in a leaching tank, introducing oxygen into a leaching solution containing ferrous iron through an aeration assembly head arranged at the bottom of the tank; b) stirring the leachate through a stirring assembly positioned above the aeration assembly; c) applying a high-voltage electrostatic field to at least one pair of electrode plates immersed in the leachate, wherein the electrode plates are insulated from the tank wall and are obliquely arranged; d) monitoring the surface zeta potential of the oxygen bubble in real time by using an online zeta potential instrument; and e) based on the zeta potential value monitored in the step d), dynamically adjusting the intensity of the high-voltage electrostatic field in the step c) through a controller, so that the zeta potential on the surface of the oxygen bubble is stabilized in a target range of-40mV to-25mV, and controlling the pH value of the leachate to be maintained at 2.5-3.5 in the whole process of stirring, aerating and applying the electrostatic field. The method can effectively improve the oxygen utilization rate.

The invention relates to the technical field of sewage treatment equipment, in particular to a reinforced biofilm culturing type hollow fiber membrane stack for an MABR process. The membrane comprises a membrane shell, a plurality of groups of membrane elements are arranged in the membrane shell, each membrane element consists of a plurality of hollow fiber membranes which are arranged in parallel, the upper end and the lower end of each membrane element are respectively connected with a membrane frame and are arranged in the membrane shell through the membrane frames, and a three-dimensional net-shaped filler layer is arranged between every two adjacent hollow fiber membranes; an additional biological attachment carrier is provided by adopting the three-dimensional net-shaped filler, so that the system can maintain higher microorganism concentration, the treatment capacity and the impact load resistance are stronger, and the biomass is obviously improved; the inclined aeration is adopted, so that bubbles are more fully contacted with a membrane, a filler and a liquid phase, the oxygen utilization rate and the pollutant degradation rate are improved, and the mass transfer efficiency is optimized; in the application, the directional transverse shearing force can more effectively control the thickness of a biological membrane on the surface of the membrane, reduce membrane pollution, prolong the cleaning period and the service life of the membrane, and enhance the anti-pollution performance.

The utility model relates to a sewage treatment equipment for environmental protection engineering belongs to sewage treatment technical field, in order to solve the problem that the bubble diameter generated by traditional aeration is usually larger, the rising speed is faster, the oxygen utilization rate is lower, and cannot form the full mixing with sewage, the utility model discloses sewage treatment tank and the oxygen cavity of opening in sewage treatment tank inside, sewage treatment tank both sides are installed with pump body, a plurality of jet elements are fixedly installed in the oxygen cavity, and the pump body is communicated with a plurality of jet elements through the pipeline, and the one end of jet element is installed with suction shell, and the one side of suction shell is communicated with the water outlet pipe, and the rotating part is installed in the water outlet pipe, the utility model discloses through the treatment of jet breaking and rotary shearing, the bubble diameter is significantly reduced, and the specific surface area is greatly increased, and the rising path of bubble is changed by swing plate, prolongs its residence time in sewage, makes oxygen have more sufficient time to dissolve, effectively solves the problem that the oxygen utilization rate of traditional aeration is low.

The invention relates to the field of gas breathing circulation regeneration, and discloses a gas breathing circulation system based on bionic half gills and an underwater respirator, the gas breathing circulation system comprises a respirator, the respirator is used for breathing interaction of a user; the bionic half gill is internally provided with a permeable diaphragm for air-water exchange; the respirator and the bionic half gill are connected in series through a connecting pipeline to form a gas circulation loop; based on the characteristic that the solubility and the mass transfer rate of carbon dioxide in water are far higher than those of oxygen, the scheme realizes that carbon dioxide is efficiently transferred only by a physical diaphragm without a chemical adsorbent, so that not only is the chemical risk thoroughly eliminated, but also the utilization rate of oxygen is increased by several times by recycling residual oxygen in exhaled gas; and finally, the underwater operation time is remarkably prolonged under the same oxygen carrying amount, meanwhile, the breathing comfort is guaranteed through the gas adjusting cavity, intelligent regulation and control of gas components are achieved through the exhaust port, and the system has safety, high efficiency and engineering feasibility.