Cooling tower system inhibitors

Cooling tower system inhibitors

Each of these popular inhibitors is a multifunctional blend which includes both scale and corrosion inhibitors for steel, copper and brass as well as polymer dispersants to prevent fouling, these provide powerful treatment to inhibit scale or corrosion but do not contain a bromine precursor.

Water Corrosion or Scale deposition tendency

Professor Langelier’s research, complete in 1936, defines conditions in which water is balanced with calcium carbonate, making it possible to predict the likelihood of a given water to either precipitate or dissolve calcium carbonate. Being the universal solvent that it is, if water is out of balance, it will seek to find its own equilibrium (0.0 LSI.) in the case of swimming pools, water can even draw calcium out of the plaster that lines the pool walls,  or in industrial systems draw from the protective coating on pipework at an LSI of -0.5 LSI and below. In the case of over-saturation eg. >0.5 LSI the water will become scale forming.
The relationship between the actual pH of a water sample and the pH at which it is just saturated with calcium carbonate (pHs) is called the Langelier Saturation Index (LSI) and is equal to (pHs – pH).
However, the way in which the LSI is calculated, two different waters; one having high levels of hardness (scale forming), and the other with low level of hardness (corrosive) could theoretically have the same Langelier Saturation Index (LSI) due to the effects pH, Alkalinity and Temperature have on the calculation. For this reason we reach for the Stability index developed by Ryzner (RSI) which goes further and distinguishes between two waters based on an index of actual operating results with waters of various LSIs.
The RSI pf water is calculated by: 2 x pHs – pH

Cooling tower system inhibitors

Our most popular Biocides & Disinfectants

Cooling Water Dispersant Products

Water valley range of cooling tower dispersants are highly effective at removing fouling by microbiological slime and are best incorporated into a treatment regime with a biocide such as chlorine or bromine for cleaning cooling towers to ACoP L8 standard.
Accepta recommends incorporating the Bromgard cooling system treatment range which brings together the latest scale, corrosion and fouling control technology with the biocidal power of bromine for applications in the widest possible range of cooling water systems

Foam Cleaning

For cooling towers where pack removal is too difficult Activ-Ox Foam Cleaner may be suitable, the high cling foam gives a deep clean disinfecting and descaling lightly fouled tower packing.
The high-cling foam cleaner includes acid products for descaling and alkaline products for removing organic fouling and general soiling. We have also incorporated Activ-Ox®, our patented chlorine dioxide system to provide powerful surface disinfection and biofilm removal, incorporated together these products offer exceptional cleaning power which is why Activ-Ox foam clean is used by extensively by cooling tower cleaning teams across the UK and abroad

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