Chemical dephosphorization process can be classified according to the adding place of chemical agent. In practice, the commonly used methods are Pre-dephosphorization process, synchronous dephosphorization and post dephosphorization.

The Selection of chemical phosphorus removal agentsIn order to produce insoluble phosphate compounds, the main chemical agents are metal salts and calcium hydroxide, which are used for chemical phosphorus removal.

The service life of ceramic membrane not only means that the membrane does not have mechanical damage, but also refers to the effective filtration time of the membrane.Ceramic membrane has attracted more and more attention because of its excellent performance and wide range of applications.

The treatment process of coal mine water is unstable for a long time and the discharge is not up to the standard. With the upgrading of national environmental protection policy, it is clearly required that the discharge of coal mine water must meet the class III standard of environmental quality standard for surface water (GB3838-2002).

Landfill leachate is a liquid that leaks out during the process of garbage accumulation and landfill. Its composition is complex and the concentration of organic matter is high.