Feasibility study for an integrated management system for municipal waste in the Medjerda Valley, Tunisia
Duration of assignment (months): 46 months
Name of Client: IGIP mbH / Germany, contractor of ANGed (Agence Nationale de Gestion des déchets) / Tunisia
Financing : KKfW Bankengruppe LIII/b5, Palmengartenstr. 5–9, D — 60325 Frankfurt/ Germany
Start date (month/year): 03/2009 Completion date (month/year): 12/2012
Name of associated Consultants: IGIP mbH (Germany), ICP mbH Karlsruhe
Narrative description of Project:
- Due to the dynamic development of the Tunisian economy, Tunisia is confronted with increasingly important quantities of waste. In the coming years, it is estimated a continual increase of waste quantities of 4 to 5%.
- In this context, KfW decided to fund a new project “Integrated management system for municipal waste in the Medjerda Valley”. Municipal waste includes household waste and assimilated sewage sludge, slaughterhouse waste, industrial waste, earth excavation and medical waste.
- The aim of this project is to develop and implement a waste management concept for municipal waste for the Medjerda Valley (area of 16,000 km²) for a time horizon of 20 years (collection, transport, transfer, treatment and recycling, landfilling). The project was divided into 3 steps:
- Phase 1: Current situation analysis (SWM system, evaluation of waste data and waste analysis)
- Phase 2: Concept study and design
- Phase 3: Feasibility study and design for approval for two scenarios (only landfilling and waste treatment with landfilling)
- According to the study, the population in the project area in 2009 amounted to approx. 647,000 inhabitants for an annual waste production of 150,000 t / year. Until the year 2033, an increase of the production of municipal waste to 253,000 t / year is planned for a total population of 836,000 inhabitants in the project area.
- The feasibility study has compared two scenarios: the first one considering only landfilling and the second considering the treatment of waste and landfilling. Finally, the study has recommended the second scenario. This includes the construction of two new regional landfills at the sites of “Erroumani” in the northern of the Medjerda Valley and “Les Salines” in the southern of the Medjerda Valley. In addition two treatment facilities (MBT), one on each landfill site, have been planned for the treatment of the whole waste quantities, and 38 transfer stations in the project area. Between 2014 and 2033, the plant of “Erroumani” will accept 2,461,072 tones of waste and the plant of “Les Salines” 1,713,623 tones. The chosen lining systems for both landfills is a composite liner (compacted clay liner + HDPE geomembrane). Leachate generated of each landfill will be treated directly on site.
- The next step (Phase 4 expected in 2014) will be the waste system detailed construction design for the landfills and MBTs, the preparation of tender documents (contract conditions, technical specifications, drawings, supporting documents) and the assistance with the award of contract.
Description of actual services provided by your staff within the assignment:
- Waste characterization and analysis (amount, composition, heavy metals, …)
- Collection and evaluation of waste data
- Preparation of a solid waste management master plan for Medjerda Valley taking into account the institutional, operational, financial socio-economical and legal aspects
- Cost analyses and tariff system for the Medjerda Valley
- Calculation of landfill gas and carbon credits production
- Feasibility study for a new waste management system: two new landfills, two biological treatment plant (MBT with recycling) and 38 transfer stations
- Scenario 1: elaboration of two new landfill designs (design for approval)
- Scenario 2: elaboration of two new landfill designs and two biological treatment plant designs (design for approval)
- Cost analysis for the new landfill and MBT (investment and operation cost)
- Financial analysis of MSWMS