13 results about "Oxygen regulation" patented technology

The application discloses a kind of organic waste composting methods for reducing nitrogen loss, belong to the technical field of organic waste resource utilization, in different stages of organic waste fermentation, calcium peroxide is added, on the one hand, can maintain the oxygen environment of heap system, inhibit denitrification;On the other hand, by regulating the pH environment in system, reduce ammonia volatilization.This double synergistic effect, continue to increase efficiency in the whole composting fermentation process, oxygen regulation breaks down the gaseous nitrogen loss caused by denitrification from the root, pH regulation effectively inhibits free ammonia volatilization, the two effects cooperate with each other, throughout the whole process, can realize the efficient nitrogen conservation of organic waste raw materials from fermentation start to stable decomposition, effectively solve the problems that existing nitrogen conservation technology is not good, cost is high, easy to cause secondary pollution and affect composting maturity etc..

The application provides a wafer-level room-temperature monolayer magnetic semiconductor thin film and a preparation method thereof, and relates to the technical field of two-dimensional magnetic semiconductor material preparation.The present application is based on a three-temperature-zone low-pressure chemical vapor deposition system, and the wafer-level controllable preparation of a single-cell thickness spinel structure Fe2GaO4 thin film is realized through the following steps: the partitioned treatment of Te powder, metal precursors and sapphire substrates in three temperature zones, and the preparation method of sequentially blowing and replacing by inert carrier gas and hydrogen-argon mixed gas, segmented preheating and temperature rising, oxygen regulation and control and in-situ heat preservation annealing.Meanwhile, the prepared Fe2GaO4 thin film has a thickness of only 0.53 nm, a Curie temperature of more than 300 K, intrinsic ferromagnetism at room temperature, clear optical band gap and semiconductor characteristics, and can be widely applied to various new-type spin electronic devices.

This invention relates to a hyperbaric oxygen chamber system with adjustable oxygen concentration. The system includes a main unit and a chamber. The main unit comprises a main control module, an oxygen regulation module, and a pressure regulation module, all electrically connected to the main control module. The pressure regulation module includes a low-oxygen air regulation submodule and a pressure-maintaining air submodule. The pressure-maintaining air submodule includes a first air compressor, a pressure relief valve, and a first sensor. The oxygen regulation module includes a second air compressor, a separation valve, a molecular sieve tower, a flow-limiting valve, and a vacuum pump. The low-oxygen air regulation submodule includes a three-way valve and a one-way valve. This invention's adjustable oxygen concentration hyperbaric oxygen chamber system can reduce the production cost of hyperbaric oxygen chamber systems, improve the user experience, and allow the oxygen concentration within the chamber to be adjusted below that of air, thus expanding its application to low-oxygen training and testing environments.

The utility model belongs to the technical field of experimental apparatus, concretely relates to an animal chronic hypoxia experiment device of adjustable oxygen concentration, including the water tank box with the top opening, the hypoxia box with the bottom opening, oxygen concentration detector and oxygen concentration adjusting assembly, the length and width of water tank box are greater than the length and width of hypoxia box respectively, be provided with the animal platform in water tank box, the hypoxia box cover is located in the water tank box, and the animal platform is buckled in, oxygen concentration detector sets up in hypoxia box, is used for detecting the oxygen concentration in hypoxia box, and oxygen regulating assembly includes oxygen delivery piece and vacuum pump, one end of oxygen delivery piece passes through the oxygen delivery piece of the box body in hypoxia box and is located in hypoxia box, the other end of oxygen delivery piece is connected in vacuum pump, and the oxygen concentration in hypoxia box can be adjusted through oxygen regulating assembly, can simulate different degree hypoxia environment, such as plateau hypoxia, hypoxia caused by disease etc., satisfies different experimental demand.

This invention relates to the field of solid waste application technology, and particularly to a method for improving the stability of steel slag based on dissolved oxygen regulation using microorganisms. The method includes the following steps: crushing and screening waste steel slag, washing, drying, sterilizing, and drying to constant weight to obtain steel slag aggregate; preparing a liquid culture medium, adjusting the pH value of the liquid culture medium to be approximately equal to the pH value of the steel slag aggregate; inoculating microorganisms into the liquid culture medium for cultivation; centrifuging the cultured microbial solution; diluting the bacterial sludge with 0.9% physiological saline or resuspending it with a sterilized 5g / L yeast extract solution; adjusting the OD600 value of the bacterial solution to 0.8~1.2; using a vacuum negative pressure adsorption device and surface spraying to ensure full contact between the bacterial solution and the steel slag aggregate and adsorption to saturation; preparing a mineralizing nutrient solution to mineralize the steel slag aggregate after adsorption of the bacterial solution, resulting in stabilized steel slag aggregate. This invention utilizes a microbial dissolved oxygen response regulation strategy to maximize and improve the stabilization efficiency of microbially modified steel slag.

The present application belongs to the technical field of sewage treatment, and particularly relates to a composite constructed wetland system based on dissolved oxygen regulation and a running method thereof. The composite constructed wetland system of 'no-vegetation horizontal subsurface flow + vegetation composite vertical flow + vegetation horizontal subsurface flow' constructed by the present application can realize segmented water inflow from the water inflow pipe of the no-vegetation horizontal subsurface flow constructed wetland and the water distribution inflow pipe of the downflow pool B, and can optimize water flow and redox environment, so that the problem of carbon source shortage can be solved without supplement of additional carbon source, nitrogen and phosphorus removal efficiency is improved, and the system is suitable for treatment of low carbon-nitrogen ratio wastewater.

The present application relates to the technical field of industrial furnace intelligent regulation, and particularly relates to an oxygen regulation method and system for an oxygen-enriched combustion system. The method comprises the following steps: obtaining limited measurement point operation data and fuel feeding state data of an oxygen-enriched combustion furnace; performing furnace space measurement point scope matching according to the limited measurement point operation data to obtain furnace space correlation data; positioning a fuel reaction interval in combination with the fuel feeding state data to obtain fuel reaction interval data; performing oxygen consumption space backstepping according to the limited measurement point operation data, the furnace space correlation data and the fuel reaction interval data to obtain furnace oxygen consumption distribution data; identifying local oxygen deficiency risk based on the furnace oxygen consumption distribution data to obtain local oxygen deficiency risk data; and generating partitioned oxygen supply control data according to the local oxygen deficiency risk data. The present application can improve the local oxygen deficiency risk identification accuracy and the oxygen regulation pertinence under the condition of limited measurement points, and reduce excessive oxygen supply and insufficient combustion.

The utility model provides a kind of water quality microbiological detection culture device of precision temperature control, it is related to microbiological culture technical field, including temperature control box, the inside of temperature control box is provided with carrier box tray, the inside of carrier box tray is provided with six incubator, the outside of temperature control box is provided with oxygen regulation mechanism, oxygen regulation mechanism includes booster air pump, the output end of booster air pump is fixedly connected with gas pipe.The water quality microbiological detection culture device of precision temperature control, by the mutual cooperation of temperature control box, carrier box tray, incubator, sealing perspective door, sealing ring, oxygen sensor, connecting pipe, airtight solenoid valve, booster air pump, gas pipe, air pipe, gas pipe and button controller, each incubator can store appropriate water body sample with microorganism, and then when the batch of microorganism needs aerobic culture, operate button controller to control both airtight solenoid valves to be electrified and be communicated, and control booster air pump to be electrified and start pumping.

This utility model discloses an intelligent dissolved oxygen regulation device for a biological treatment tank, relating to the field of wastewater treatment technology. Specifically, it includes a water tank, within which an aeration disc and a dissolved oxygen analyzer are fixedly installed. A blower is located outside the water tank, and a frequency converter and controller are located outside the blower. An air supply pipe is fixedly installed at the output end of the blower, and a four-way fitting is fixedly connected to one end of the air supply pipe. An air plate is fixedly installed inside the aeration disc, and several sealing blocks are installed inside the air plate. Several fixing brackets are fixedly installed at the bottom of the air plate. This utility model uses a preset standard dissolved oxygen value and a dissolved oxygen analyzer to monitor the dissolved oxygen content in the wastewater. When the measured value at a certain time does not meet the preset standard value, the controller increases or decreases the blower's airflow and the frequency converter's speed, thereby adjusting the dissolved oxygen value in the water tank in a timely manner, facilitating stable wastewater treatment.

The application provides an oxygen treatment system and a control method thereof, wherein the oxygen treatment system comprises an oxygen treatment device for treating oxygen through an electrochemical reaction and a liquid supplementing device for supplementing liquid to the oxygen treatment device, and the control method comprises: detecting a liquid level drop rate of the liquid supplementing device; judging whether the liquid level drop rate of the liquid supplementing device is greater than a preset drop rate threshold; if yes, locating a leakage point of the oxygen treatment system; and performing an alarm measure corresponding to the leakage point. By using the method, the oxygen treatment system has the liquid leakage self-monitoring capability and the leakage point locating capability, so that the user can take targeted remedial measures. According to the scheme of the application, the oxygen regulation function of the oxygen treatment device can be reduced or avoided from being disabled due to liquid leakage, and the surrounding environment is protected from being eroded by electrolyte.

This utility model relates to the field of welding torch technology, specifically disclosing a welding torch with switchable nozzle types. It includes a handle with a fixed connector mounted on it. The fixed connector is equipped with an oxygen regulating valve and a gas regulating valve. The oxygen regulating valve is used to connect to an oxygen cylinder, and the gas regulating valve is used to connect to a gas cylinder. An oxygen-containing nozzle or an oxygen-free nozzle is detachably mounted on the front end of the fixed connector. This utility model's welding torch can selectively install either an oxygen-containing nozzle or an oxygen-free nozzle according to usage requirements, thus switching between oxygen-containing and oxygen-free welding torches. It combines the advantages of high flame temperature of oxygen-containing welding torches (suitable for both welding and cutting) with the advantages of oxygen-free welding torches (portable, lightweight, and long gas usage time), while eliminating the disadvantages of both. The switching operation is convenient and quick, meeting the needs of various scenarios and offering higher versatility.

The application discloses a kind of vital sign monitoring method and system, belong to health monitoring field.It includes: based on preset embedding dimension and preset time delay, HR time series data and SpO2 time series data are reconstructed in phase space, and the maximum Lyapunov index MLE of reconstructed phase space is calculated again;If MLE indicates that the human oxygen regulation system of target monitoring object is unstable, then obtain the temperature fluctuation time series data and altitude fluctuation time series data of first preset length, and based on at least one of temperature fluctuation time series data, altitude fluctuation time series data and acceleration time series data, HR time series data, SpO2 time series data are filtered, and obtain causeless HR time series data and causeless SpO2 time series data;The above-mentioned time series data is clustered respectively, and if the greater of two dispersions is not less than preset dispersion threshold, brain edema early warning is sent out.The scheme can realize early warning to high altitude cerebral edema in high altitude scene.