Where would we be without the modern-day convenience of air conditioning? Our work productivity would likely plummet and running errands in the scorching summer heat would be unbearable. Industrial cooling towers are used for eliminating heat while maintaining temperatures. Cooling tower water filtration is just one of the industries that implement both filter bag housings and filter media to ensure a water filtering process that is safe and effective; whether they are used for an industrial site or air-conditioning in a building, the water treatment can make a large impact in their overall operations.   

Filter bag housings paired with their filter media make it possible for cooling water filtration, just one of the many industries we serve here at Filter Sciences. Explore cooling tower water filtration with us today.


Do you often find your filter bag housings covered in rust and corrosion? Choose housings that are stainless steel, but at the cost-effective prices of carbon steel.


Cooling Tower Water Filtration

Cooling water whether used in comfort cooling (air conditioning) or industrial cooling water is vital to many processes. Open recirculating cooling towers are utilized to conserve water by its re-use in a cooling tower. The water is diffused into small droplets and evaporative cooling decreases the water temperature.  This process requires a high volume of outside air forced through the cooling tower via a fan to improve the efficiency of the cooling tower. The tower with the outside air flowing over it not only cools the tower water but also acts as an air cleaner. Anything in the air ends up in the cooling tower water. Cooling tower water filtration is just one of the industries that implement both filter bag housings and filter media to ensure a water filtering process that is safe and effective; whether they are used for an industrial site or air-conditioning in a building, the water treatment can make a large impact on their overall operations.   
Filter bag housings paired with their filter media make it possible for efficient cooling water filtration, just one of the many industries we serve here at Filter Sciences. Explore cooling tower water filtration with us today.

Many types of filtration require backwash and loss of vast amounts of water when the whole purpose of the cooling tower is water conservation. Bag filtration requires no regeneration, it is truly zero water discharge. The bags filled with particulate are simply removed and cleaned or discarded. A second great advantage is the level of filtration can be altered by simply changing to a different type of bag. Even if you have another type of filtration system in use, such as a sand filter, which regenerates and wastes a large volume of water our system can be utilized to filter the regenerate and recycle it back into the system.


When facilities opt for cooling towers as a part of their HVAC system, some variation is needed to establish effective and efficient water filtration processes and system longevity. When neglected, cooling tower water is subjected to organic growth, scaling, corrosion, and fouling — all of which cost time in money as employee and plant productivity is reduced. So, how do you avoid facility downtime and costly equipment replacements? You use high-quality stainless steel filter bag housings and optimal filter media for your operation.

What is cooling tower water filtration?

Cooling tower water filtration is a set of technologies that filter potentially harmful debris and particles from your cooling tower feed water to better blowdown and circulates the water. Each system varies some, but the specific configuration depends on the following:

  • The nature of your cooling tower

    • Closed-loop, once-through, or open circulating
  • The quality requirements listed by the manufacturer
  • The makeup and chemistry of your water
  • The option of your blowdown water being treated for reuse
  • Circulating concentration
  • The type of heat exchanger

What are the components of a basic cooling tower water filtration system?

The variations you will observe in cooling water filtration will come from the chemistry of your circulatory water and the quality of feed water. A basic system implements the following:

  • Chemical feed
  • Clarification
  • Automated monitoring
  • Filtration and/or ultrafiltration
  • Ion softening and/or exchange

Because each facility will have a different set of water particles present, the filtration process will use a combination of the above methods which is why it is critical to talk with a water filtration specialist to find the optimal system for your business.

What does the cooling tower water filtration manage?

There are many elements of the filtration system, and it typically controls levels such as:

  • Iron
  • Alkalinity
  • Chloride
  • Organic matter (microorganisms which lead to corrosion)  
  • Silica
  • Hardness
  • Sulfates (lead to corrosion)
  • Total suspended solids (TSS)
  • Total dissolved solids (TDS)

While there are many steps in industrial cooling water filtration including the water uptake, ion exchange and water softening, chemical treatment, and blown down treatment, we will go more into depth on filtration, ultrafiltration, and side-stream filtration.

  • Filtration and ultrafiltration – Running cooling tower water through filtration helps remove any debris or suspended particles such as organic matter and sediment. It is important to tackle this step early to remove any solids that may escape upstream that can cause fouling later on down the line. Depending on the type of filter media and filter bag housing being used, particles can be removed to under one micron.
  • Side-stream filtration – If your cooling water tower system processes and recirculates water, a side-streamed unit is helpful to control for drift contamination. If your system requires side-stream filtration, it is a good idea to consider a multimedia filtration system.

Filtering water in a cooling water filtration system is advantageous in keeping your equipment clean, effective, and corrosion-free.

Filter Sciences: Your Filter Housing Allies

If you are in the cooling tower water filtration industry, we can provide your facility with leading filter media and stainless steel filter bag housings that ward off corrosion and last much longer than carbon steel.

For more information about our filtration products, connect with us today — and always remember, we offer the quality and durability of stainless steel at carbon steel prices!