The working principle of circulating water treatment: 1. Anti corrosion mechanism: There is a component in the composition of the medicine that has a strong affinity for the metal surface. When the medicine dissolves in water, a thin (less than one micrometer) and tough molecular film is formed on the metal surface. This type of film has extremely excellent characteristics, which can effectively prevent the contact of metal surfaces with anions and dissolved oxygen in water, thus preventing the occurrence of metal oxidation corrosion and electrochemical corrosion. 2. Anti scaling and descaling mechanism: After the agent dissolves in water, it forms a colloidal negative ion, which can adsorb suspended solids and calcium and magnesium ions in water, forming flocculent colloidal ion clusters. Therefore, it is not easy to attach to the pipe wall and is easily excluded from the system. Due to the inhibitory and dispersing effect of colloidal negative ions on the generation and deposition of carbonate scale, scaling is prevented. Some components in the medication undergo ion exchange with calcium and magnesium compounds in the scale layer, transforming the insoluble substances in the scale layer into soluble substances free in water, playing an anti scaling and descaling role.