The Global Symposium on Soil Pollution #GSOP18 | 2 - 4 May 2018 | FAO Hq Mr. Petr Sharov, Blacksmith Institute Pure Earth, Azerbaijan

1. Remediation of Soil
Contaminated with
Persistent Organic Pollutants
in Sumgait, Azerbaijan
Petr Sharov, Rovshan Abbasov, Alena Temnikova
Blacksmith Institute Pure Earth

2. • Azerkimya JSC
(suggested the site)
• Blacksmith Institute
• Sumgait Municipality
• Ministry of Ecology and
Natural Resources of
Azerbaijan, Polyqon
Site Background & Detailed
Assessment

3. • The site used to be a disposal
area for wastewater from the
Organic Synthesis Plant and
Ethylene-Propylene Plant
• After settling and evaporation
in the pond, the sludge was
periodically taken out and
placed on the ground right
near.
• Main contaminants: Benzene,
Benzo(a)pyrene,
Polychlorinated biphenyls
(PCB)
Site Background & Detailed
Assessment

4. Site Assessment
Mean Concentrations of Benzene in Soil, Sumgaiyt
1,2
5,1
20,4
19,3
0 0,01
0
5
10
15
20
Rec level for
residential
soils
Rec level for
industrial soils
Surface
(before
remediation)
Depth 0.5 m
(before
remediation)
Surface (after
remediation)
Depth 0.5 m
(after
remediation)
Concentration,mg/kg

5. Mean Concentrations of Benzo[a]pyrene in Soil, Sumgaiyt
0,11
2,1
15,7
8,2
0,07
0,82
0
2
4
6
8
10
12
14
16
Rec level for
residential
soils
Rec level for
industrial soils
Surface
(before
remediation)
Depth 0.5 m
(before
remediation)
Surface (after
remediation)
Depth 0.5 m
(after
remediation)
Concentration,mg/kg
Site Assessment

6. Site Assessment
Mean Concentrations of PCB in Soil, Sumgaiyt
0,23
0,94
21,4
11
0,15 0,69
0
5
10
15
20
Rec level for
residential
soils
Rec level for
industrial soils
Surface
(before
remediation)
Depth 0.5 m
(before
remediation)
Surface (after
remediation)
Depth 0.5 m
(after
remediation)
Concentration,mg/kg

7. • Remediation plan:
• Remove the top most
contaminated layer of soil
of 0.5 m (deeper in most
contaminated areas)
• Bring clean soil
• Plant trees, grasses and
bushes
• Place gazeboo, benches,
make a nice public
park/beach
Remediation: Planning

8. Remediation: Planning

9. Remediation: Planning

10.  Cleanup started on February 11, 2015:
 April 4, 2015: 804 m3 of contaminated soil were transported to hazardous waste storage
(Polyqon)
After removing the contaminated soil
 Soil samples were collected
13,200 m3 of clean soil placed
125 m3 of organic fertilizers
Drip irrigation system installed, trees and shrubs planted
Remediation: Execution

14. After Remediation

15. After Remediation

16. After Remediation