It’s that time of year when seasonal boilers should be prepared for the heating season. Before flipping that power switch to the “ON” position, however, the entire steam distribution and condensate return system needs to be surveyed to ensure it is ready for safe and successful operation.

By design, recirculating aerated water cascades through cooling towers to extract unwanted heat to the atmosphere. When foaming occurs, it can have negative impacts on both the cooling tower system and the surrounding environment. Foaming can not only confuse sensors and damage nearby equipment and car paint, it can also serve as a carrier for Legionella bacteria. Cooling water can foam due to a multitude of reasons. In some cases, it is even the result of a combination of factors. Some reasons cooling tower foaming may occur include:

Cooling towers, steam boilers, and recirculating closed loop systems require effective water treatment chemistry for reliable and efficient operation. Liquid treatment chemicals are traditionally used because they are easier to manufacture and add to systems, but liquids aren’t always the best fit and present safety and environmental concerns that are often overlooked.

Where there is water, there is life. This includes cooling, chilled, process, and drinking water systems that facilities use every day. This life not only exists within the bulk water but sets up home on the surfaces of the water-related equipment, such as heat exchangers, piping, and basin walls. We call this deposit biofilm.

The quality of water entering a boiler, cooling, or process system can have a significant impact on water, energy, and system efficiency. Raw makeup water can come with many different types of impurities, including dissolved and suspended solids, which can lead to energy-robbing scale deposits and equipment-damaging corrosion. Pretreatment equipment removes unwanted impurities from raw makeup water before they can cause problems in industrial water systems.