The purified flue gas discharging from flue gas desulfuration (FGD)facility through cooling tower can make a certain pollutants coming into circulatory cooling water system

leading to enhancement of impurities in circulating water

reduction of its pH value

increasement of its electric conductivity

and acceleration of system corrsion speed.The remedial counter measures are as follows:dosing suitable chemical agents;as well as suitably selecting materials and controlling the flow rate in condenser tubes;and strengthening monitor in operation

carrying out periodic cleaning in power plants with conditions exist

and adopting the by-pass flow treatment reasonable in technical and economical aspects if necessary.