Cooling Tower Water Treatment
The maintenance of cooling tower water quality is a significant, though often overlooked, issue in water treatment systems. Water, whether it comes from cooling towers or your regular faucet, supports biological growth over time. Moreover, if left unattended for a long time, it may corrode or form scale deposits on equipment. This is why a cooling tower water treatment system is needed.
Problems Caused by Poor Cooling Tower Water Maintenance
When cooling tower water is poorly maintained, it can give rise to a range of problems, such as the following:
Scale Formation
Scale is formed from precipitated solids, which are commonly produced from heating or cooling water with high mineral content. As scale deposits build up on heat exchange surfaces, they have the tendency to reduce the system’s efficiency. Moreover, the scale formation may also block the flow of water from the cooling tower’s basin or fill.
Using a cooling tower water treatment system can help prevent the build up of scales. It is a cost-effective method that not only treats the problem but also has the effect of reducing maintenance cost of the cooling tower system. Majority of maintenance cost of cooling towers are spent on the removal of scale deposits.
Corrosion
Corrosion occurs when metal dissolves. Under the effects of oxidation, a substantial part of the metal breaks down, leading to a premature degradation of the system. Basically, the metal degrades, its strength and thickness reduced, its structural integrity compromised, and in some extreme cases, it may even create pits and holes in the material.
A cooling tower water treatment system that prevents corrosion is in order. One such system that is effective in preventing corrosion is ozone treatment. However, there are other methods available as well.
Biological Fouling
Biological fouling occurs when water has been left unattended for a long time. Bacteria, algae, fungi, and even protozoa are fond of water and will grow when water has been left untouched for a time. Eventually, the accumulated population of microorganisms in the water will result in the formation of biological film, which is difficult to remove. This creates a situation, commonly referred to as “biological fouling.”
Out of all cooling tower water problems, this is considered to be the root. Among the adverse effects of biological fouling are reduced heat transfer efficiency, fouling of cooling tower fill, blockages in water flow, as well as microbiologically induced corrosion. It may also result in human health concerns.
Using a cooling tower water treatment system eliminates this problem. A good cooling water treatment system removes bacteria, fungi, viruses and other biological contaminants in the water and prevents them from fouling the water. Removal of these contaminants, in turn, improve the quality of the water flowing out of the cooling tower.
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