Water treatment for cooling systems has three primary
objectives: corrosion, deposition and microbiological
control. System components with high temperatures on
heat-transfer surfaces are most vulnerable to inorganic
scaling. Heat exchangers that have process leaks are
susceptible to organic fouling from poor microbiological
control. Similarly, components with high-surface temperatures
on heat-transfer surfaces are the most vulnerable to corrosion.
Corrosion can occur under inorganic deposits through
differential aeration and under organic deposits -
microbiological-induced corrosion (MIC) - due to the acidic
nature of the biological processes.
Chemical treatment options. The selection
of the correct program requires matching key characteristics of
the system with the various treatment programs and the users'