What Is an Aeration Tank?

Aeration basin is a biochemical reactor designed according to the characteristics of microorganisms. The degree of degradation of organic pollutants mainly depends on the aeration reaction conditions designed by people.

Aeration is a means to make the air and water come into strong contact. The purpose is to dissolve the oxygen in the air in the water, or exile unwanted gases and volatile substances into the air. In other words, it is a means to promote the exchange of matter between gas and liquid. It also has other important functions, such as mixing and stirring. Oxygen in the air is transferred to water by aeration, and oxygen transfers from the gas phase to the liquid phase. This theory of mass transfer and diffusion is widely used.

Aeration methods can be divided into two types, mainly blast aeration and

Sewage enters the water plant, passes through the grid pool to the catchment room,

For a long time, the activated sludge method has been mostly used for the secondary biological treatment of urban domestic sewage. It is currently the most widely used secondary biological treatment process in various countries in the world. It has the advantages of high treatment capacity and good effluent water quality. However, there are widespread infrastructure costs, high operating costs, high energy consumption, and complicated management. Problems such as sludge swelling and sludge floating are prone to occur, and inorganic nutrients such as nitrogen and phosphorus cannot be removed. For a developing country with insufficient resources and a large population, from the perspective of sustainable development, it is not suitable for China's national conditions. Since sewage treatment is a project focusing on environmental and social benefits, it is often limited by funds in the process of construction and actual operation, making the problem of treatment technology and funds a "bottleneck" for water pollution treatment in China. How to make the urban sewage treatment process develop towards sustainable directions such as low energy consumption, high efficiency, small amount of residual sludge, the most convenient operation management, and realization of phosphorus recovery and reuse of treated water. It has become a common concern in the field of water treatment technology research and application. It is required that sewage treatment should not only meet the single water quality improvement, but also consider the resource and energy issues of sewage and its pollutants. Technology must be based on the premise of low energy consumption and low resource consumption.