Cooling tower treatment chemical

corrosion inhibitors (e.g., bicarbonates) to neutralize acidity and protect metal components

algaecides and biocide (e.g., bromine) to reduce the growth of microbes and biofilms

scale inhibitors (e.g., phosphoric acid) to prevent contaminants from forming scale deposits

Thorough treatment prior to this stage can help reduce the amount of chemicals needed to treat water at this point in the process, which is ideal considering many chemical treatments can be expensive.