What is the use of Water softeners in cooling tower treatment?
A cooling tower water treatment system is frequently required for industrial enterprises that use a cooling tower for their facility to ensure an effective process and lengthy equipment service life. Organic growth, fouling, scaling, and corrosion can lower plant productivity, create plant downtime, and need costly equipment replacements if cooling tower water is not cleaned.
What is a cooling tower water treatment system?
A cooling tower water treatment system is a collection of technologies that remove harmful contaminants from the feed water, circulation water, and/or blowdown of your cooling tower. Your system's precise setup will be determined by a number of factors, including:
>Which cooling tower do you have? (Open circulating, once-through, or closed loop)
>Feed water's quality
>Manufacturer-recommended cooling tower and equipment quality criteria
>The chemistry and composition of your circulatory water
>Discharge regulatory requirements
>Whether or if the blowdown will be treated for cooling tower reuse
>Heat exchanger type
>Concentration cycle
What does a simple cooling tower water treatment system include?
As previously stated, the exact components of a cooling tower water treatment system are dependent on the quality of feed water and the chemistry of circulatory water in relation to the quality of water required for the specific cooling tower and related equipment (as per the manufacturer's recommendations), but in general, a basic cooling tower water treatment system typically includes one or more of the following:
>Clarification
>Ultrafiltration and/or filtration
>Softening/ion exchange
>Feed containing chemicals
>Monitoring system that is automated
Any combination of these treatments may best fit your facility and make up your treatment system, depending on the contaminants present in your water, so consult with your water treatment specialist to ensure the proper system for your specific tower is considered. These standard components are generally sufficient, depending on the needs of your cooling tower and operation.
Water Softening for Cooling Tower Water Treatment System
If your source/makeup water has a high level of hardness, it may be possible to remove it with treatment. Instead of lime, a softening resin can be used. This is a strong acid cation exchange process in which the resin is charged with a sodium ion, and as hardness builds up, it has a higher affinity for calcium, magnesium, and iron, so it grabs that molecule and releases the sodium molecule into the water. If these impurities are present, they will create scale and rust.Because softened water is particularly corrosive to ferrous metals, using it in cooling tower systems necessitates special treatment.
Although you did not describe your treatment plan, the following are my observations.
>The presence of iron in the cooling tower shows that the system is corroding. As dissolved iron passes through a cooling tower, it oxidises, causing iron to precipitate in the fill and basin.
>The hardness in the cooling tower comes from the outside, most likely from wind-blown dust in the sky. Because the amount of hardness in a cooling tower cannot be predicted, you must simply maintain a calcium/alkalinity balance to avoid calcium carbonate precipitation. To prevent corrosion and excess dissolved iron from entering the system, a corrosion inhibitor and iron dispersant will be necessary.
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