project 4. lecturer: stoyan gaydardzhiev university of liege, belgium group members: j. tun tun, h....

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

10 April 2023 12. IPW - FH Nordhausen

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

10 April 2023 12. IPW - FH Nordhausen

Introduction:• Definition of remediation

10 April 2023 12. IPW - FH Nordhausen

Remediation strategies for polluted soil

10 April 2023 12. IPW - FH Nordhausen

Further data:

• The surface area: 10 ha = 100,000 m²• Depht = 0.8 m• Soil = 80,000 m³• Mass = 128,000 t

10 April 2023 12. IPW - FH Nordhausen

Project work - Task

• Given Facts:- Density = 1.6 g/ cm³- pH = 7.1- CEC = 23 mg/g- Heavy Metals [μg/ g]

- Pb: 1240- Zn: 1200- Cd: 15– [ Sand ] [Silt] [Clay ] [Carbon ]

56 % 32% 11% 1%

-Humidity: water content 1.5% mass of dry soil

-Organics: (from fuel leackage)

Vinylchloride – soluble (water)

Naphtalene – in water and gas

Phenol – in water and in solid

10 April 2023 12. IPW - FH Nordhausen

Method

10 April 2023 12. IPW - FH Nordhausen

Biological treatment

10 April 2023 12. IPW - FH Nordhausen

Soil washing (ex situ)

10 April 2023 12. IPW - FH Nordhausen

Moving drum screen - trommel

Centrifugal non-mechanical classifiers - Hydrocyclone

10 April 2023 12. IPW - FH Nordhausen

10 April 2023 12. IPW - FH Nordhausen

Calculation• Cost for renting mashines• Energy cost • Biological treatment• Excavation• Soil washing• Laboratory test• Labour charge

Approximate cost 200 € per m³

10 April 2023 12. IPW - FH Nordhausen

Summary

• Economical• Effective• Simple