Cooling water plays a vital role in transferring heat away from mission-critical equipment and processes, such as manufacturing, cold storage and air conditioning. Foaming in cooling water can occur rapidly, for no obvious reason, and not always predictable by routine system monitoring. Due to the design of evaporative cooling systems, allowing for high movement and constant air-water interface, a small amount of foam can be normal and not a cause for concern. However, in extreme cases, foam can exit an evaporative cooling system, be blown into the air and around the facility, making it visible to the surrounding population. Without proper understanding of the causes or remedies, flying foam can alarm the general population.
Foam formation requires the presence of a surfactant (surface active agent) to lower air-water interface surface tension. As well, movement such as turbulence is required to mix air into the water.
Foam can be white, or take on the color of contaminants present in the cooling water. It can be light and frothy, or thick like a slurry. These observations can be of use in helping troubleshoot the source.
There are many reasons for foaming to occur, either temporarily, or as a long-term phenomenon. Since each factor can compound the effect of the other, your water treatment supplier should help you take a comprehensive approach, considering all of the following.
It is always wise to have industrial defoamer onsite, as a short-term response to a foaming situation. Usually, very little defoamer is required to break the bubbles and release the air.
The following tips can help ensure foaming is not a cause for alarm at your facility.
Due to the design of evaporative cooling systems, a small amount of foam can be normal. It is always wise to have industrial defoamer onsite, as a short-term response to a foaming situation. Usually, very little defoamer is required to break the bubbles and release the air.
Trade Expo / 05.14.19
Meet DuBois Technical Representatives at BOOTH# 5449, May 14-16 at EASTEC, to help shape your business at the East Coast’s premier manufacturing event. We will feature our leading our leading metalworking fluids, process cleaners, rust preventatives, paint pretreatment and water treatment solutions for cooling, boilers and wastewater.
Recent Events / 10.02.18
The acquisition of the Water Treatment Solutions division of Triwater Holdings LLC, and its Klenzoid, Eldon Water, Chemco Products and Nashville Chemical brands, expands DuBois position in Canada and enhances our solutions for the institutional, light industrial, food and beverage and natural resources markets.
Recent Events / 04.22.19
St. Joseph Mercy Oakland and Eldon Water, a recent acquisition of DuBois Chemicals, implemented a program to save a projected 665,000 gallons of water annually. For Earth Day this year, the hospital was awarded a $10,000 check by Eldon for being a sustainability leader.
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