Waste Treatment and Valorisation

Worldwide, public authorities and companies attach ever increasing importance to the eco-friendly handling of waste substances. Not only because of ecological considerations but also from the economic perspective, waste can quite often still be turned into a valuable raw material or fuel.

Over the past few years, Envisan has become the no. 1 specialist in the expert handling of these waste substances and in offering tailor-made solutions.

 

Belgium, Zwevegem - Imog Site Moen

Covering of the landfill and construction of a centre for sediments

 

Covering of the landfill and construction of a centre for sediments

 

Key figures
Country

Belgium

Client's name

IMOG

Contractor's role

Main Contractor

Period
August 20, 2013
Technical specs
Scope

Covering of the present landfill in combination with the organization of the treatment centre (lagoons) for subsaqueous soil

Sediment treatment

Laying of foil, application of hydrostab and KSP-glass

Volume

For the covering of the landfill following materials have been used:
- 21,680 ton KSP glass as drainage layer
- 37,620 ton Hydrostab as sealing layer
- 62,350 ton sediments dewaterd in lagoon fields (building material) and soils (Architectural land use)
- Application of 40.0000 tonnes of soil and dredged spoil for the construction of the lagoon banks

Use secondary raw materials

- KSP-glass as gas drainage layer
- Hydrostab as replacement of the standard used clay mats

Croatia, Jacusevec Landfill Rehabilitation Project - Zagreb

Rehabilitation of the existing 80 ha wide domestic waste dumpsite Jacusevec from the city of Zagreb, Croatia, and the construction and exploitation of a new...

Rehabilitation of the existing 80 ha wide domestic waste dumpsite Jacusevec from the city of Zagreb, Croatia, and the construction and exploitation of a new sanitary landfill facility on the same area. 
Works included the installation of bottom liners, leachate control and capping systems.
Installation of a gas management system, including the construction of extraction wells with the associated piping network and gas flares.
Installation of two gas engines for the production of electricity.

Key figures
Country

Croatia

Client's name

Z.G.O.S. d.o.o.

Contractor's role

Management Contractor

Technical specs
Scope

Remediation techniques:
Excavation and reallocation of waste: 7,000,000 m³
Acceptation of new waste: 1,100,000 m³
Supply and installation of HDPE liner 2.5 mm: 350,000 m²
supply and installation geotextiles: 1,500,000 m²
Supply and installation of horizontal groundwater drainage: 1,000 m
Supply and installation of leachate drainage and collectors: 1,000 m
Supply and installation of reinforcement geotextiles: 15,000 m²
Clay liner: 231,500 m³
Installation of degassing wells and capping system

Romania, Treatment Plant Arpechim

Petrom, one of the most important oil refineries in Romania, contracted Envisan to remediate 3 large lagoons with oil sludge nearby her refinery in Pitesti. Envisan designed and constructed a...

Petrom, one of the most important oil refineries in Romania, contracted Envisan to remediate 3 large lagoons with oil sludge nearby her refinery in Pitesti. Envisan designed and constructed a state-of-the-art and permanent treatment plant. With this plant a total of 180,000 m³ of oil sludge was treated, for this contract only. It is expected more volumes of sludge will be received in the future.

 

Key figures
Country

Romania

Client's name

SC Petrom SA (OMV Group)

Contractor's role

Main contractor for remediation works
Owner and operator of treatment plant

Technical specs
Volumes

Contract 1:
- Contaminated oil sludge, soil and water: 161,226.18 m³
Contract 2:
- Contaminated oil sludge, soil and water: 76,000 m³
- Backfilled soil: 400,000 m³

Contamination

Crude oil, tar, tank bottom sludge