Advanced Oxidation Process - The future of water treatment

RedOxy® treatment by Watch Water® Germany is a proprietary, multi-functional water treatment system. It operates as an Advanced Oxidation-Adsorption-Filtration process. Unlike traditional UV or Ozone Advanced Oxidation Processes (AOPs), RedOxy uses a trio of on-site dosed or generated components—REDx, OXYx, and ADSORBx—to clean water without creating toxic disinfection byproducts (DBPs). 

Instead of relying solely on radical attacks, RedOxy destroys organic molecules through a combination of radical chemistry, Ferrate(VI) power, and physical adsorption. 

Step 1: In Situ Radical & Ferrate Generation

When the three primary chemical agents are mixed into the 3 autonomous contact reaction tanks and do with LMI pumps, they instantly spark a manifold of oxidative agents. 

• The Component Mix: Hydrated ferric solution (REDx) reacts with a powerful stabilized oxidant (OXYx).
• The Radical Blitz: The mixture instantly creates a cascade of highly reactive radicals: Hydroxyl Radicals, Sulfate Radicals , and Carbonate Radicals.
• Ferrate(VI) Creation: Simultaneously, the process synthesizes ultra-pure Ferrate(VI), one of the strongest non-toxic oxidants known, boasting a massive redox potential.

Step 2: The Radical and Ferrate Primary Attack

The generated radicals and Ferrate immediately attack the complex organic molecules (e.g., pesticides, hydrocarbons, or pharmaceuticals). 

• Radical Electron Stripping: Hydroxyl and sulfate radicals rapidly break apart unsaturated chemical bonds and aromatic rings by extracting hydrogen or transferring electrons.
• Ferrate Inactivation: Ferrate(VI) targets specific functional groups within the organic structures, instantly reducing the complex toxicity of the compound

Step 3: Carbon Fragmentation & Intermediate Breakdown

As the primary structures collapse, the organic molecule fragments. 

• Chain Breakdown: The complex carbon chains fragment into simpler, shorter intermediate compounds, such as volatile organic acids or aldehydes.
• Chemical Oxygen Demand (COD) Drop: During these first few minutes, the biological and chemical oxygen demands (BOD and COD) drop steeply as the complex bonds are broken down. 

Step 4: Adsorption and Scavenging via Iron Oxyhydroxide 

As the Ferrate(VI) finishes its oxidation work, it naturally reduces and shifts form into a potent, physical scavenger. 

• Precipitation: The reduced ferrate turns into active Iron Oxyhydroxide and Ferric Hydroxide. This structure has a massive surface area (up to 3,500 meter squared per gram).
• The Adsorption "Trap": The ADSORBx media features a hydrophobic core that attracts remaining dissolved trace organics, trapping them tightly onto the iron flakes. Any heavy metals or toxic ions are co-precipitated alongside them. 

Step 5: Final Mineralization and Filtration

The process concludes by converting dissolved elements into benign solids and gases.

• Mineralization End-Products: The fully oxidized organic carbon turns into harmless carbon dioxide and water.
• Media Filtration: The resulting larger iron-organic aggregates and precipitates flow out of the contact tank and are cleanly swept away using Watch Water's physical media filters, typically Crystolite, Katalox-Light®or catalytic carbon units.