ProMinent GmbH

White paper: `Disinfection of Process Water` by ProMinent

Source: ProMinent GmbH

Process water is required in almost all industrial sectors. The legal requirements governing the quality of process water are stringent and the high cost of providing and treating the water has to be taken into account. Sustainable, environmentallyfriendly production processes are gaining in importance within this context, as they can be implemented without any adverse effects on the products. Companies therefore reduce their costs and protect the environment.

Wolfgang Matheis, Product Manager at ProMinent, discussed the specifics of water treatment in industry in his talk entitled 'Disinfection of Process Water', which he gave at the well-attended forum on environmental technology 'Process Water Technologies in Production Companies.' The key starting point when considering this issue is the question of the quantity of disinfectant required. It is always essential to use precisely the right concentration of disinfectant for the respective application. Too low a concentration means an increased microbiological risk, while too high a concentration pollutes the environment and drives costs up with unnecessary use of chemicals.

A vendor-independent comparison highlighted the effectiveness, deposition effects, by-products and resources consumed by the respective technologies. The speaker compared the use of chlorine, chlorine dioxide, ozone and membrane filtration with each other. Wolfgang Matheis introduced disinfection using ozone and chlorine dioxide for the treatment of cooling water. The results of treatment with ozone compared with conventional biocides persuaded the attendees of the Forum.

A further case study focusing on the problem of legionella, proved how the minimum metering rate of 0.05 ppm of ozone guarantees legionella-free water. At the same time, savings of up to around € 100.00 per day can be made by treating with ozone – once again compared with conventional biocides.