WHAT IS PASSIVATION?

Passivation is the scaling, oxidation and pitting of the anode and cathode (sacrificial electrodes). This impediment is driven by the fluid’s scaling potential and the concentration of Total Dissolved Solids (TDS) in the solution. Passivation occurs rapidly and can hinder a traditional EC treatment within hours, requiring remediation or replacement of the electrodes, a costly and unsafe procedure.

Problems caused by passivation include:

  • High maintenance costs
  • Power and electricity increases
  • Equipment redundancy and higher capital costs
  • Unexpected operation shutdowns
  • Greater HS&E risks to personnel
  • Inefficiency with reduced treatment rates

THE OUTCOME

  • Completely passivated and scaled sacrificial anode and cathode fail.
  • EC process stops for maintenance or replacement

With passivation, volts are drawn to maintain the required amps, resulting in higher power consumption. When the volts are maxed, traditional EC units must be removed from service for electrode maintenance or replacement.

Learn about how Thincell solves the problem of passivation

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