Treatment for cooling towers and evaporative condensers is an essential part of reducing costly repairs, maximizing the lifespan and efficiency of cooling equipment, and preventing the spread of deadly water borne pathogens such as Legionella.

Cooling tower water treatments aim to address the following:

  • Corrosion control
  • Scale/deposit build up
  • Microbiological control
  • Freeze Protection
  • System Cleanings
  • Passivisation
  • Lay-Up/Start-Up

Cooling Tower Treatments

GWT-Inc offers a variety of treatment solutions for these systems. Our treatments are formulated using industry standard chemical formulations and blends.

Corrosion, Scale, and Deposit Treatments
  • GWT’s cooling water inhibitors employ a wide array of corrosion inhibitors, dispersants, and polymers to prevent corrosion and scale build up.
  • Traced programs using florescent dye and/or molybdenum are available.
Biological Control Treatments:
  • GWT offers a wide array of oxidizing and non-oxidizing biocides for implementation in cooling water applications. GWT will select the product or combination of products that best protects against biofilms and water borne pathogens. Some notable biocides in our arsenal include:
    • Bromicide Tablets by BWA Water Additives
    • Industrial Strength Bleach or 12.5% Sodium Hypochlorite Solution
    • BroMax, a stabilized liquid bromine biocide based on active ingredients of sodium bromide and sodium hypochlorite, by EnviroTech
    • Other Stabilized Products such as Justeq07 by Justeq LLC
    • Non-oxidizing biocides such as Bellacide355, Bellacide350, Isothiazoline, and Glutaraldehyde
    • Perasan A, a hydrogen peroxide and peracetic acid solution, by EnviroTech
Freeze Protection
  • Achieved through running inhibited propylene glycol through tower coils to coat interior metal for winter lay-up.
  • Our glycols come in any percent mixture with or without inhibitors.
  • We also offer greenER alternatives to the standard glycols on the market.
Cooling System Cleaning and Descaling Treatments
  • GWT provides inhibited cleaning compounds that penetrate deposit build up and scale on heat transfer surfaces.
  • Treatments come in powdered or liquid form and can be applied in various ways such as sump, pump, or direct application.
Cooling Tower Passivisation
  • Before commissioning a new cooling tower it is important to passivate or pre-treat the metal in order to maximize the useful life of the system.
  • Passivisation helps combat the “white-rust” phenomena affecting galvanized systems.
  • Passivisation procedures include a pre-cleaning to remove dirt or remaining manufacturing debris and a pre-filming treatment to create a corrosion barrier.
  • Passivisation is also suggested after any deep chemical or acid cleanings of equipment.
  • We offer highly concentrated products specifically designed for passivisation as well as pre-cleaning formulations.
Cooling Tower Chemical Tracing
  • We can add trace amounts of fluorescent dye to any of our blends for the purpose of real-time monitoring of inhibitors in cooling towers.
  • This tracing method must be tied in to the control system using a fluorometer.
  • Another option is using molybdenum in trace amounts for testing with a portable calorimeter.
Seasonal Cooling Lay-Up and Start Up Treatments
  • Cooling tower lay-up/start-up is essential to the general up keep of cooling equipment. Draining down systems should never be the only step for winterization. Over the course of a cooling season many factors may contribute to accumulation of debris in the equipment such open air contaminants, construction debris, or interruption of treatment program. Therefore it is important to use a lay-up treatment with mild cleaning characteristics. Our lay-up treatment programs both clean and provide a protective coating on the metals of cooling systems before winter lay-up.
  • Start-Up is just as important. After spending an entire winter weathering the harsh elements, it is important to pre-treat the cooling equipment before starting up the equipment.
GreenER Treatments
  • GWT offers green formulated water treatments to aid customers achieve higher efficiencies and better use utilities.
  • Green inhibitors are more biodegradable, require less energy to manufacture, and allow higher cycles of concentration.
  • Higher cycles of concentration means using water more efficiently and making-up less water.
  • These formulations are also less toxic to humans and the environment.

Interested in Cooling Tower Water Treatment?

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Why Choose GWT?

  • Minority Owned
  • Environmentally Responsible
  • Cost Conscious
  • Service-Driven
  • Technical Expertise
  • Progressive Approach
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