Oxidize. Adsorb. Filter. Restore.
RED-OXY® is an integrated water and wastewater treatment process combining ferrate-based oxidation, contaminant adsorption, solids separation and final polishing.
Developed by Watch Water® Germany, the RED-OXY® process uses REDx and OXYx components to generate active ferrate chemistry at the treatment site. The oxidation stage transforms selected organic and inorganic contaminants and simultaneously produces ferric hydroxide, which supports coagulation and adsorption. Optional ADSORBx improves floc formation and contaminant capture. The resulting solids are then removed through KATALOX-LIGHT® filtration, with CATALYTIC CARBON® available for final water polishing[cite: 3].
One treatment train for complex water conditions.
On-site oxidation. Rapid adsorption. Reliable filtration.
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One process.
Multiple water-treatment applications.
RED-OXY® is designed for contaminated water streams requiring oxidation, adsorption, coagulation, disinfection support and solids filtration within one coordinated treatment train.
Drinking-Water Treatment
Supports oxidation, coagulation and filtration of selected organic, inorganic and trace contaminants.
Municipal and Industrial Wastewater
Designed to reduce color, odor, turbidity, organic loading and selected industrial contaminants before reuse or discharge.
Water Reuse and Irrigation
Supports the treatment of reclaimed water intended for process reuse, agricultural irrigation or other approved applications.
Mining and Heavy-Metal Water
Ferrate oxidation and ferric-hydroxide adsorption support the removal of arsenic and selected dissolved metals.
Oil, Gas and Produced Water
Designed for produced water, flowback water and streams affected by hydrogen sulfide, metals, scale and biofouling.
Soil, Pulp and Process Industries
Applicable to contaminated-soil treatment, paper and pulp operations, fracking water and specialized process-water applications.
Four coordinated treatment systems working as one process
On-Site Ferrate Generation
Prepared REDx and OXYx solutions are dosed simultaneously to generate active ferrate chemistry. This stage supports rapid oxidation of selected organic and inorganic contaminants.
Contaminant Capture and Floc Formation
Ferrate reduction produces ferric-hydroxide solids with adsorption and coagulation properties. Optional ADSORBx supports additional binding, floc formation and contaminant separation.
Removal of Precipitated Contaminants
Following the reaction and contact stage, KATALOX-LIGHT® filtration removes precipitated solids, ferric floc and associated contaminants from the treated water.
Taste, Odor and Trace-Contaminant Polishing
An optional CATALYTIC CARBON® stage provides final polishing for residual organics, taste, odor and selected trace contaminants.
The Science Behind
RED-OXY® Treatment
RED-OXY® uses ferrate-based oxidation together with in-situ ferric-hydroxide formation. This creates a combined process in which oxidation, coagulation and adsorption occur before physical filtration.
- Ferrate(VI) Oxidation – Ferrate, commonly represented as FeO₄²⁻, is a strong oxidizing species capable of reacting with various organic and inorganic contaminants. Its oxidation performance depends strongly on pH, dose and water chemistry.
- In-Situ Ferric-Hydroxide Formation – As ferrate is reduced, iron(III)-based hydroxide solids form. These solids can support coagulation, coprecipitation and adsorption of dissolved or suspended contaminants.
- Rapid Contact Reaction – The brochure recommends a reaction-tank contact time of approximately 3–5 minutes. Actual requirements must be confirmed through water testing and pilot trials.
- Filtration and Final Polishing – Precipitated contaminants and ferric solids are removed using KATALOX-LIGHT®, followed where necessary by CATALYTIC CARBON® for final polishing.
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It all starts with a water analysis.
Send us your water-quality data and treatment objectives. Our technical team can evaluate the contamination profile, conduct treatability testing and recommend an appropriate RED-OXY® process configuration.
