Catalytic Hydro-oxidation CHD-Ox
Refractory COD: The Oxidation Challenge
CHD-Ox is an advanced oxidation-based treatment process from Diva Envitec Pvt Ltd designed for the removal of toxic and refractory COD from industrial wastewater. Using catalytic hydro-oxidation enhanced with nanomaterials, the system improves biodegradability by breaking down complex organic pollutants such as antibiotics, pesticides, and micro-pollutants before biological treatment stages like MBBR.
Catalytic Oxidation Pathway & Reaction Mechanism
Advanced oxidation reactions
generates highly reactive hydroxyl radicals (•OH) that oxidize and break down stable and toxic organic compounds.
Cavitation enhancement
pressure variations create microbubbles that collapse, producing localized high temperature and pressure zones, intensifying oxidation reactions.
Nanobubble technology
nanobubbles provide a large surface area and sustained presence in water, enhancing the generation of reactive oxygen species (ROS).
Catalytic action
nanomaterial-based catalysts accelerate oxidation kinetics, improving degradation efficiency of refractory COD.
Biodegradability improvement
complex, non-biodegradable pollutants are converted into simpler, biodegradable compounds suitable for downstream biological treatment.
Oxidation Performance & Process Advantages
Effective removal of toxic and refractory COD
Enhances biodegradability (improves BOD/COD ratio)
Reduces toxicity before biological systems (MBBR/ASP)
Synergistic combination of cavitation, nanobubbles, and catalysts
Suitable for difficult-to-treat industrial effluents
Compact and integrable with existing treatment systems
High-Toxicity & Refractory Effluent Applications
- Pharmaceutical and API manufacturing
- Pesticide and agrochemical industries
- Chemical and specialty chemical plants
- Effluents with high refractory COD and micro-pollutants
- Pre-treatment before biological systems (MBBR, ASP)
Engineering Considerations
Advanced oxidation processes (AOPs) are increasingly adopted for treating refractory organics that are not effectively removed by conventional biological systems. CHD-Ox enhances treatment efficiency by combining oxidation, cavitation, and nanotechnology to enable safer and more reliable downstream processing.
Documentation
Technical brochure
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- CHD-Ox: Toxic Refactory COD RemovalRequest PDF
Every effluent has a different process signature.
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