Methods and systems for treating biological contaminants

A method for treating unwanted material comprising:

• forming an amount of ionized, dissolved metal ions in a cooling liquid depending on the magnitude of a first electrical current supplied to each pair of first electrodes and upon the flow rate of the cooling liquid through the first electrodes, wherein each pair of the first electrodes comprises a positively charged first anode and a negatively charged first cathode to reduce the unwanted material, wherein the unwanted material comprises at least biofilm;
• and
• forming hypochlorite ions in the cooling liquid depending upon the magnitude of a second electrical current supplied to second electrodes in a second chamber and upon the flow rate of the cooling liquid through the second electrodes, wherein each pair of the second electrodes comprises a positively charged second anode and a negatively charged second cathode and wherein each pair of second electrodes comprises an electrolysis “cell” enclosed in a steel baffle.