1. 1 LEGIONELLA PREVENTION Chemical free

2. 2 Agenda The legionella challenge A solution – By Wallenius AOT The technology Performance Installation Summary

3. 3 Our Business Areas INDUSTRY PROPERTY ENERGYMARINEAQUACULTURE

4. 4 Legionella pneumophila exists naturally in water, i.e. in lakes, rivers that becomes our drinking water The Legionella bacteria multiplies in amoebas, sheltered by the biofilm inside pipes, tanks etc. Legionella is found in aerosols formed in industrial processes, showers, Jacuzzis, humidifiers Inhalation of contaminated aerosols can cause the lethal Legionnaires disease The Legionella Challenge Copyright: Wallenius Water

5. 5 The Solution Wallenius AOT – proven effective on Legionella pneumophila Contaminated water in Purified water out Light source A semi- conductor SpeciesPotential (V) ● OH2,8 O3O3 2,1 H2O2H2O2 1,8 ClO - 1,5 Wallenius AOT produces ● OH - an extremely powerful and chemical free oxidant

6. 6 The Microbiological Degradation by Wallenius AOT + Destruction of cell membrane and inactivation of DNA Water Microorganism Hydrogen atom Cell membrane Cell Microorganism Cell membrane DNA

7. 7 The experiments on cultivated Legionella pneumophila inside amoebas were performed by Vitens Laboratories in the Netherlands in accordance with the certification procedure of the Assessment Guideline. Products are approved by Kiwa. AOT 42 AOT 84 Dutch Assessment Guideline for Legionella in tap water BRL K14010-01/01 Copyright: Wallenius Water Performance on Legionella Vitens - Netherlands

8. 8 Performance on Legionella in Cooling System - I

9. 9 Performance on Legionella in Cooling System - II

10. 10 Warm side Make-up Water Process/object cooled by Water Cold side Outgoing air with aerosols Air in Warm Water for Colling Wallenius AOT – chemical-free bacterial control Particle filter >50 micron

11. 11 Summary - Wallenius AOT Chemical free Inspired by nature´s own processes Uses one of the strongest oxidants – free radicals Effectively eliminate Legionella Destroys the cell membrane in addition to UV- inactivation of DNA Reduced ability to repair

12. 12 Thank you for your attention. Magnus Carlsson Magnus.Carlsson@walleniuswater.com Copyright Wallenius Water – Presentation for Hydac