The challenge

As with any large, complex water system, the challenges of legionella control and maintaining a high level of system hygiene are abundant. With numerous cold water storage tanks (CWST), calorifiers, multiple outlets and hidden pipe networks, coupled with very little down time, this system required a combined chemical and mechanical solution. The normal method for sanitizing hot water, was to ensure that the water temperature was maintained at 62 °C, which presented a scald risk and was cost-ineffective.

Our solution

Working alongside our approved partners, a robust strategy was implemented to include shock and constant dosing of our biocidal product Huwa-San TR-50. With an environmentally sound footprint leaving no harmful residuals, Huwa-San has proven efficacy against biofilms and legionella and so was the natural choice for this project.

Having the ability to control the dosing using proportional dosing systems allows a measured and auditable solution which can be scalable to suit any size of system. It’s this type of system which has benefitted this terminal building and allowed for such sustainable results for a long period of time.

By using Huwa-San TR-50, the water temperature can be dropped to 50 °C, thereby saving energy costs and providing safer working conditions (less scald risks).