[A study on the corrosion of desalinated drinking water from electrodialysis process and its control]

The stability index IR of desalinated drinking water from electrodialysis process was more than 9.0. Its corrosion rate P reached 0.59 mm/a. This is the main cause of "Red Water" and severe corrosion in network of pipes of water supply in an oil field. A large number of iron bacteria and sulfur bacteria in water are the biological causes of tubercles and block up. But the P becomes less than 0.05 mm/a, when the water is remineralized. It is an effective measurement to control the pipe corrosion and to provide good quality drinking water.