Corrosion control method for iron-aluminum bimetallic system of SCAL type indirect air cooling circulating water system

The invention provides a corrosion control method for an iron-aluminum bimetallic system of an SCAL type indirect air cooling circulating water system, and relates to the technical field of thermal power generation equipment, and the system comprises a carbon steel circulating water pipeline, an aluminum radiator, a surface condenser and a circulating water pump. A reducing agent adder is arranged on the carbon steel circulating water pipeline connected with an outlet of the circulating water pump, a pH alkalization regulator is arranged on the carbon steel circulating water pipeline connected with an outlet of the aluminum radiator, and a pH acidification regulator is arranged on the carbon steel circulating water pipeline connected with an inlet of the aluminum radiator. Therefore, the reducing working condition of circulating water can be realized by adding the reducing agent when the system is filled with water. The pH regulator is injected into the circulating water at different nodes, so that the circul