Typically water treatment for cooling towers involves the use of: Scale and corrosion inhibitors – These chemicals are meant to reduce or eliminate contaminants, such as minerals, in your water supply that can result in blockages and deterioration in your system’s piping.
A biocide is defined as a chemical substance or microorganism intended to destroy, deter, render harmless or exert a controlling effect on any harmful organism by chemical or biological means.
A bio dispersant can be useful both to remove biofilm from a system and to prevent the development of biofilm within a clean system. As it is known that Legionella bacteria selectively grow under layers of biofilm, keeping a cooling tower biofilm free is of obvious importance
Corrosion is a general term that indicates the conversion of a metal into a soluble compound.
Corrosion can lead to failure of critical parts of boiler systems, deposition of corrosion products in critical heat exchange areas, and overall efficiency loss.
That is why corrosion inhibitors are often applied. Inhibitors are chemicals that react with a metallic surface, giving the surface a certain level of protection. Inhibitors often work by adsorbing themselves on the metallic surface, protecting the metallic surface by forming a film.
Scale is the precipitate that forms on surfaces in contact with water as a result of the precipitation of normally soluble solids that become insoluble as temperature increases. Some examples of scale are calcium carbonate, calcium sulphate, and calcium silicate.
Scale inhibitors are surface-active negatively charged polymers. As minerals exceed their solubility’s and begin to merge, the polymers become attached. The structure for crystallization is disrupted and the formation of scale is prevented. The particles of scale combined with the inhibitor will than be dispersed and remain in suspension.