Corrosion is caused by metals attempting to return to their natural state. Corrosion can be present in many forms, including uniform metal loss, localized or pitting, bi-metallic, galvanic, under deposit, and microbiological induced corrosion (MIC). The process starts when surface irregularities, stresses, or compositional differences result in the formation of a corrosion cell. Once started, corrosion at the anode causes metal to be released into the system or redeposit locally. Pitting is particularly problematic because the local loss of metal can result in thru-wall perforation of piping and tubing
Cooling water systems are subject to a variety of contaminants that can interfere with heat transfer, increase corrosion rates, restrict water flow, and cause loss of process efficiency and production. Customized scale inhibitor programs are necessary for mineral scale and sludge prevention. Mineral Scales
Calcium carbonate, calcium sulfate, calcium phosphate, magnesium silicate, silica compounds, and mixtures of these Sludge and Organics Silt and windblown debris, biological deposits, metallic oxides, corrosion products, oil.
Cooling water towers can be ideal breeding grounds for biological growth, including algae, bacteria, sulfate-reducing bacteria, protozoa, and fungi. If not properly controlled, these organisms will form a layer of bio-slime that acts as a natural adhesion surface for scale formation, resulting in increased corrosion rates, restricted water flow, and reduced system efficiency