Cooling towers play an important role in the removal of waste heat from heat exchange systems. Inefficient cooling towers require more energy to deliver a specific amount of cooling and can result in higher electricity usage and unnecessary water consumption. Cooling tower problems can be divided into 3 main areas:
- Biofouling: bacterial growth on the surfaces of cooling water systems. Biofilms are generally resistant to oxidizing biocides such as chlorine and can cause a severe reduction in heat transfer. Biofilm also creates a favourable habitat for the growth of Legionella that poses serious health risks to employees and/or patrons.
- Corrosion: a chemical process that involves the oxidation of the construction material of cooling water systems. In time, corrosion can lead to costly equipment failure.
- Scaling: a process where minerals in the water deposit onto cooling system surfaces at high pH values. The layer of scale can result in poor heat transfer within the cooling system.
Regular maintenance and correct feedwater treatment can assist in minimizing the effects of these factors, resulting in decreased equipment downtime, lower electricity consumption and less frequent blowdowns.
The new ScientificTM C range of cooling water treatment chemicals consists of concentrated solid products that can be used to control scaling and corrosion. The solid products are easy to handle and supplied in compact packaging that does not require excessive storage space. These products were developed for small and medium-sized cooling towers located at manufacturing sites, hotels, hospitals and shopping centres.
Lonza offers a total water management approach that can be customized for specific needs.
Lonza provides the following solutions for this application: