Titanium Advanced Oxidation Process (AOP) System The most - - PDF document

Advanced Hydro Ltd

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Titanium Advanced Oxidation Process (AOP) System

“The most effective Water Disinfection System on the Market Today”

Advanced Hydro Ltd

www.advancedhydro.co.uk

What is the Titanium AOP System?

The AOP system is a flow through unit which uses innovating technology to sterilise water. WRAS approved, it kills all waterborne organisms, oxidises pollutants and offers significant advantages over conventional technologies.

How Does It Work?

Water to be treated passes through the AOP units as shown in Fig.1. Figure 1

OH OH OH OH

UV light falling on the Titanium Dioxide (TiO2) inner coating, generates Hydroxyl Radicals (OH•) via catalytic oxidation. The combined effect of the catalytic oxidation and the hydroxyl radicals break down all microorganisms and organic pollutants in the water stream significantly better than standard UV. Due to their extreme reactivity OH• only exist for a few milliseconds (10-3s). Hence sterilisation takes place within the AOP unit itself with only sterile water being discharged. The Hydroxyl Radicals produced attack and break down the cell wall/membrane of any pathogens present.

UV Lamp Water Out Water In Tube Pathogen/ Organism TiO2 Coating UV Light

Advanced Hydro Ltd

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Hydroxyl Radicals are one of the most powerful oxidising agents known. This is shown in Table 1, as is the redox potential of the catalytic oxidation itself. Table 1

Oxidant Formula Oxidation Strength (eV) TiO2/UV/H20 Catalytic Oxidation 3.28 Fluorine F2 2.87 Hydroxyl Radical OH• 2.8 Singlet Oxygen O (1D) 2.42 Ozone O3 2.07 Hydrogen peroxide H2O2 1.78 Permanganate MnO4 1.67 Hypochlorous acid HOCl 1.48 Monochloramine NH2Cl 1.4 Chlorine Cl2 1.36 Hypobromous acid HOBr 1.33 Oxygen O2 1.23 Bromide Br2 1.07 Chlorine dioxide ClO2 0.95

Due to their oxidative strength Hydroxyl Radicals destroy and breakdown all organisms found in water. Hence the AOP system is highly effective against:  Bacteria (Including all forms of legionella)  Fungi and Yeasts (Reducing biofilms)  Protozoa (Including amoeba)  Viruses

Advanced Hydro Ltd

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Mechanism and Chemistry

The Titanium AOP System relies on the following mechanisms:  Photocatalytic oxidation via Modified TiO2 Coating  UV Photolysis  UV/H2O2 Photochemical Process Chemistry  TiO2 (semi-conductor) + hv + H2O 2 OH•  H2O2 + hv 2OH•  O2 + hv O + O  O + H2O 2OH• Mechanisms of AOP Oxidation on Contaminants  Hydrogen abstraction HO• + RH R• + H2O  Electron transferring HO• + RX RX+ + HO-

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AOP System Advantages

• The AOP System kills and destroys ALL

waterborne organisms

• No by-products or bio-toxins remain
• Chemical free
• Environmentally friendly, low cost with low

maintenance and running costs

• Oxidation of and destruction of pollutants
• Prevents and eliminates biofilms
• Highly effective and efficient
• Automatic control and compact design

Advanced Hydro Ltd

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Applications

 Cooling Towers  Building Services  Specialist Applications  Food & Beverage  Marine  Waste and Process Water  Pharmaceutical  Swimming Pools  Drinking Water  Pollutant (COD/BOD) Reduction

Advanced Hydro Ltd

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Testing and Performance Verification

The AOP System has been extensively tested by the Vitens Laboratory in Holland, the foremost water laboratory in Europe. Test results showed a Log Reduction in excess of 6 CFU for Legionella. The efficiency in kill rate is shown by the following graph. The graph also illustrates that even at twice the maximum flow rate the AOP Unit still achieved an efficiency rating of 100%. Titanium AOP 1 (Max flow rate 17 L/min) Full test details are available from Advanced Hydro Ltd. Size Availability and Flow Rate The AOP units are available in the following sizes by flow rate. Unit Flow Rate m3/hr Flow Rate L/min AOP 1 1 17 AOP 5 5 84 AOP 10 10 166 AOP 20 20 335 AOP 50 50 835 AOP 100 100 1,670 AOP 400 400 6,666

Max Flow

Advanced Hydro Ltd

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Further Information

For further information or to find out how the AOP System can benefit your water systems please contact: Advanced Hydro Ltd Tel: 01233 469 221 Fax: 01233 469 224 Info@advancedhydro.co.uk www.advancedhydro.co.uk Address: Advanced Hydro Ltd Clevedon Court Green Lane Challock ASHFORD Kent TN25 4BW