Corrosion of Water-cooler in Circulating Water System of Sewage Recycling

Effects of the chloride concentration,temperature,pH,conductivity and turbidity on the corrosion behavior of 20 carbon steel were investigated by means of electrochemical testing.Experiments results showed that the 20 carbon steel had great tendeney to be dissolved in the circulating water.Cl- would influence both anodic and cathodie polarization behaviors.The steel was corroded mildly in the neutral and basic media,and the corrosion rate would be accelerated with the increase of acidity,turbidity,conductivity and temperature.