Wastewater remediation: Hydrocavitational Advanced Fenton Process (HCAFP)
The long-established Fenton Process uses hydrogen peroxide and iron salts to facilitate the oxidation of organic compounds. Abertay's advanced version - HCAPF - replaces the expensive iron salts with small amounts of cheaper solid iron and also utilises ultrasound to clean metal surfaces and speed up the reaction through supermixing and cavitation. The result is similar to the catalytic converters in cars that use metals and oxidation processes to reduce harmful emissions from exhaust fumes.
HCAFP is a novel, patented process for the treatment of industrial wastewaters containing recalcitrant organic pollutants, such as those from the chemical sector. These effluents are characterised by having high organic loadings and they may contain refractory organic compounds, including phenolics and pesticide residues that are non biodegradable, and colour that is difficult to remove using existing treatment processes.
Pilot trials have proven the robustness and reliability of HCAFP process in the rapid removal of recalcitrant organic pollutants from a range of effluent samples from a number of industrial sectors including chemical manufacturing plant.
Key Benefits
- Novel patented ‘HCAFP’ technology incorporating an optimised chemical oxidation system augmented by hydrodynamic cavitation
- Rapid decomposition of organic pollutants and high removal rates
- Cost effective life time relative to existing technologies
- Small footprint - potentially suitable as packaged plant
- Robust process with low operational and maintenance requirements
- Lower sludge production compared to traditional processes
- Application for batch or continuous ‘in line’ treatment
- No hazardous by products or residuals
- Potential future application to a range of industrial effluents and treatment processes
Applications
- This environmental solution can deal with virtually any organic waste and has the potential to be fitted on-site to existing processes, allowing contaminated water to be pumped in at one end and emerge clean for safe disposal into the sewage system.
IP Status
European (No. EP1210299) and US (No. 6692632) patents have been granted, and a second related patent application has been filed. Having now proven the technology at pilot scale, the University of Abertay Dundee is seeking a Development Partner with whom to refine and commercialise the technology.
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