Cooling towers scrub large volumes of air and effectively remove solids consisting of dust, microbiological organisms, and various airborne debris. Makeup to the tower adds suspended solids in the form of corrosion products, microbiological growths and wood fibers from the tower, and process leaks. If allowed to settle out, these solids can and do generate many problems within the system. With heavy solids loading, even the best treatment program can be severely strained. Under these circumstances, significant improvement might be realized with the use of a side stream filter.
A proven method to help manage these and other issues surrounding cooling towers is to install a properly designed side stream filter. This can benefit your system through:
The installation of a sidestream filter is a capital expense, which may be hard to justify in most plants. Consider the following as indications that a plant should look into the possibility of installing a filter.
As stated, these are indicative only. By identifying potential threats to your systems and solutions to those threats, you can determine the paybacks of installing a sidestream filtration system. Often the payback is less time than you would think. This will vary widely from system to system; the final decision will always rest with a plant, and will always be decided on economic grounds.
Once a problem has been recognized, several benefits can result from the use of a sidestream filter. Obviously, not all of those listed below apply to all systems, and good judgment must be applied before making any claims. However, bearing that in mind, the following benefits can be realized: