Transcript Project

Project 4.
<Decontamination of polluted soils>
Lecturer: Stoyan Gaydardzhiev University of Liege, Belgium
Group members:
J. Tun Tun, H. Kissiger Noudjom,
L. Mbogne, L. Wiendieck,
M. Hanöffner, B. Meyer, K. Günther,
S. Held, F. Mucke, D. Menzel
Structure
• 1 Introduction
• 2 Project work
2.1 Task
2.2 Method
2.2.1 Biological treament (in situ)
2.2.2 Screening (on site)
2.2.3 Soil washing (ex situ)
2.3 Calculation
• 3 Summary
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Introduction:
• Definition of remediation
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Remediation strategies for polluted soil
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Further data:
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The surface area: 10 ha = 100,000 m²
Depht = 0.8 m
Soil = 80,000 m³
Mass = 128,000 t
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Project work - Task
• Given Facts:
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Density = 1.6 g/ cm³
pH = 7.1
CEC = 23 mg/g
Heavy Metals [μg/ g]
-Humidity: water content 1.5% mass of
dry soil
-Organics: (from fuel leackage)
- Pb: 1240
- Zn: 1200
- Cd: 15
Vinylchloride – soluble (water)
Naphtalene – in water and gas
Phenol – in water and in solid
– [ Sand ] [Silt] [Clay ] [Carbon ]
56 % 32% 11%
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1%
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Method
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Biological treatment
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Soil washing (ex situ)
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Moving drum screen - trommel
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Centrifugal non-mechanical classifiers - Hydrocyclone
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Calculation
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Cost for renting mashines
Energy cost
Biological treatment
Excavation
Soil washing
Laboratory test
Labour charge
Approximate cost 200 € per m³
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Summary
• Economical
• Effective
• Simple
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