ELECTROCHEMICAL TECHNIQUES: INVESTIGATION OF CORROSION IN A MAJOR METROPOLITAN WASTEWATER TREATMENT FACILITY

摘要

This paper discusses the application of electrochemical techniques in the investigation of premature corrosion failure encountered in a major metropolitan wastewater treatment plant. Electrochemical noise, linear polarization, harmonic distortion analysis, electrical resistance and wet chemistry techniques were combined to define the extent and investigate the cause of aggressive corrosion behavior observed at the facility. How these methods were applied and the results of the combined approach investigation are presented.