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Dram Overview
- 1. Device for Remediation and Attenuation of Multiple P ll t t Att ti f M lti l Pollutants Graeme Paton, Leigh Cassidy and Ken Killham University of Aberdeen
- 2. History of Project Overview • DRAM is a sustainable technique for the remediation of contaminated waters (groundwater, surface water and wastewater) • DRAM re-uses by-products to create a process of value • DRAM has a significant market potential • DRAM IPR has been secured
- 3. History of Project “the science in a single slide” • A by-product of whisky production can be deployed to remediate contaminated water • The process is achieved by a combined biological, chemical and physical interaction
- 4. History of Project Market Size • UK spends £ 1 billion per annum on investigating and remediating contaminated land • UK estimate that the cost of cleaning up an average 2 ha site is about £ 1 million • England and Wales may have 300,000 contaminated sites • The technology is transferable to the £ 7 billion per annum wastewater market • EU and global market is expanding significantly
- 5. Meeting Technical Objectives Increasing the range of chemicals • At the bench scale (< 0.5 kg)- Standard techniques have enabled a study both of flow through (simulated groundwater) and static water (wastewater). Success relates to the removal of the target chemicals from the water Chlorinated solvents PCE, TCE, DCE, VC Aromatic hydrocarbons Benzene, toluene, xylenes Heavy metals Cr, Cu, Zn
- 6. Meeting Technical Objectives Increasing the scale • At the mesocosm scale (<20 kg)- Chlorinated solvent TCE Aromatic hydrocarbons Benzene Heavy metals H t l Chromium
- 7. Meeting Technical Objectives Increasing the scale • At the near field scale (> 4000 kg) Chlorinated solvent TCE Heavy metals Chromium
- 8. Increasing the scale Enviro – Tank Input at 1l/min FEED DELIVERY SYSTEM treatment layer SAND or SOIL STONES TO THIS LEVEL TREATED WASTE IBX OUT TCE FEED Tank : Diameter : 3 metres Max. working load : 4 tonnes Height : 1.5 metres
- 9. Meeting Technical Objectives Increasing the scale 250 200 150 Cr mg/l Control DRAM 100 50 0 0 1 2 3 4 5 Time
- 10. Components That Determine Selection Of Remediation Strategy Risk Management & Legislation Sustainable Cost Effectiveness Development Remediation Project Dynamics Technical Feasibility & Social/Environmental Suitability Impacts Stakeholder Satisfaction
- 11. The Remediation Market & Decision Making • Market dominated with uncertainty: • Of treatment suitability for specific problems. • Decision making in face of uncertainty and conflicting objectives is vital in making, objectives, remediation management. • Confidence in reaching decisions desired by developers & regulators. g y p g • UK - the need for “lines of evidence”; demonstrate best practicable option is being applied on a site.
- 12. Risk Application to the “real world” • Proven technology at all scales currently four field deployments • Regulatory approval • Extensive “modelling validation” performed to support technical findings • The next stage is to share results with other environmental practitioners
- 13. Summary Market Europe Market value exceeds Euro 20 billion Competitive Costs are only 30 % of current technologies Knowledge D K l d Development l t Market study to assess markets Risk Characterised uncertainties Technological, Novel, Sustainable and Scottish
- 14. d.r.a.m. dram Device for Remediation and Attenuation of Multiple Pollutants The team gratefully acknowledge support from The Proof of Concept Programme