The forms and features of existing Cu and Fe in circulating water have been analysed

and a method for determining the control index of Cu and Fe content in circulating water through metal corrosion rate of Cu and Fe obtained from dynamic simulation test being put forward.The theoritical calculation and measurement in the field show that:(1) the reflection of corrosion rate of carbon steel by using Fe content in circulation water isn't obvious due to the solubility of iron corrosion products and protective film of iron sulfate in the circulating water system is too low;(2) the reflection of corrosion rate of copper by using Cu content in circulating water is obvious due to corrosion products of copper are mainly dissolved in circulating water

hence

under condition of copper corrosion products in circulating water isn't reaching dissolution balance

the Cu content in circulating water can in certain degreereflect the corrosion rate of copper and the state of protective film.