Cooling water treatment

Ozone Technology's Pressureless Ozonation Systems can reduce microbiological growth and other factors that affect the performance and lifespan of cooling towers and heat exchange equipment.

Cooling water is prone to four types of contamination, all of which Ozonation Systems can help reduce or eliminate:

• Microbiological growth

Microbiological growth is potentially the most harmful phenomenon that occurs within a cooling water system. Microorganisms accumulate in biofilms on the sides and components of cooling towers, impeding heat transfer efficiency, increasing energy consumption, and adding to maintenance costs. Microbial growth also impacts all other types of water problems, and the presence of biofilm on a tube surface very often promotes the formation of scale and other contamination problems.

• Mineral scale

Mineral scale from hardness ions forms on surfaces and retards heat transfer through those surfaces. Ozone reduces the surface tension of the water, reducing the precipitation of scale.

• Corrosion

Corrosion, the result of aerating cooling water, can cause equipment failure, leaks, pitting, and product contamination. Ozone pacifies the tube surface, protecting against further corrosion.

• Fouling

Fouling in cooling water occurs when contaminants, such as clay, process leaks, and silt enter the system and accumulate to form deposits that impede heat exchange and/or plug heat exchangers and pipes. Ozone's microfloculation effect traps these contaminants in simple filters, eliminating them from the system.

Advantages of Pressureless Ozonation Systems for cooling water treatment

• Conventional cooling tower water treatment includes chemical additives that remove microbes and scale, and "blowdown" (purging) of water to remove impurities. These operations add to the cost of cooling tower operation and maintenance. The ozone in Pressureless Ozonation Systems is created on-site from ambient air, eliminating safety problems and expense associated with purchasing, shipping, handling, and storing chemicals. Ozonation systems can reduce the amount of chemicals required for cooling water treatment — and sometimes eliminate chemical use completely — reducing costs and lengthening equipment lifespan.
• Ozone needs only a short contact time, typically 10 to 30 minutes. After use, the ozone decomposes rapidly, leaving no harmful residues.