Desorption of oxygen is based on the principle of Henry's Law, the oxygen-free gas mixture of strong and oxygenated water, the dissolved oxygen in the water in the gas precipitates to go, leaving the water to achieve water quality requirements. The reaction was heated in an oxygen-containing gas into the reactor using an oxygen-free inert gas circulation. According to Henry's Law, a component of the mixed gas solubility in the liquid [C] and the gas in the gas-liquid boundary surface equilibrium partial pressure [P] proportional, namely: C = K · P. Henry's law applied in water supply oxygen in the originally proposed by the European scientific and technological personnel, the reactor was placed in early equipment boiler flue heated, difficult to control due to temperature and other shortcomings, it has been greatly promote the application of limitations. In recent years, in an effort to Tsinghua general scientific officer, the technology has changed dramatically from the process to operating results. The workflow is as follows: water to be treated is conveyed by the oxygen pump to the ejector 12 5, a certain flow rate of water through the ejector 5, a certain negative pressure, the oxygen-free gas inhalation. Water and oxygen-free gas mixed in the mixing tube and into the parser 11, diffusion of dissolved oxygen in the water in the system to resolve the anaerobic gas. With oxygen from the top of the parser into the gas-water separator 6, the gas-water separator into the heat exchanger after dehydration temperature was raised to about 60 ~ 80 ℃, into the heater 1, and then into the reactor 2 and reactor reduction After the agent to again become oxygen-free gas, and then enter the next cycle, so as to achieve the purpose of oxygen continuous work. Features deoxygenated water heating is not required to be disposed of, oxygen can be carried out at room temperature; low arrangement, using no more than partial to tank-type water return system, a smaller footprint, the system is simple, easy to install, saving equipment and investment in infrastructure; high oxygen efficiency (up to 99%), after oxygen dissolved oxygen content can be reduced to 0.01 ~ 0.1mg / L; good load adaptability, high degree of automation, a press a button to start, stop, normal operation When can implement unattended; low operating costs, compared with other methods, electricity, energy consumption is greatly reduced