Tunis waste management project:
The project focuses on the treatment of household and similar waste in Greater Tunis. Indeed, it is envisaged to make two waste treatment and disposal sites available. Each of these two sites includes a Mechano-Biological Treatment (MBT) facility and a landfill. The total cost of the project is TND 530 million.
MBT reduces the amount of waste going to landfill and limits the environmental impact of landfilling of non-recovered fractions.
The MBT also makes it possible to recover several recoverable fractions in the incoming waste, and several solutions are conceivable:
. Solution 1: Recover recyclables (plastics, paper, glass, metals, etc.)
. Solution 2: Recover recyclables (plastics, paper, glass, metals, etc.) Recover a stabilized organic fraction allowing a valuation as an amendment,
. Solution 3: Recover recyclables (plastics, paper, glass, metals, etc.) Recover a stabilized organic fraction allowing a valorization like amendment. Recover a fraction with high calorific value allowing the production of a secondary fuel.
The operation, of a MBT installation is schematized as follows:
. The incoming waste deposited by the collection bins is the subject of a first mechanical treatment which consists of opening the bags.
. After opening the bags, the waste is directed to a biological treatment which results in waste water loss and degradation of part of the organic fraction.
. At the end of the biological treatment is a mechanical treatment that sorts and separates the waste to capture the various fractions according to the recovery objectives - as indicated above.
In the case of Greater Tunis, the strategic study identified solutions 2 or 3 as adapted. A criterion of the choice will be the feasibility of the energy valorization necessary for the solution 3.
The study identifies the cement plants among the conceivable outlets, specifies that:
"To date, the company Carthage Cement is the only cement factory of Tunisia ready to accept and have the opportunity to use the secondary fuel. But it is likely that subsequently other Tunisian cement plants opt for the secondary fuel option."
The deadlines for developing acceptance protocols for RDF in cement plants can be quite long, for example because of test campaigns.
Consequently, it is recommended not to leave the choice of such a valuation to the sole discretion of the candidates or tenderizers during a tender, but to anticipate as precisely as possible from the feasibility study of the project. The residual non-recovered fraction is discharged to landfill.
For the Greater Tunis project, it is envisaged to install the MBT on the sites of the 2 existing landfills (see below). In which case the project will involve the creation or upgrading of the cells needed for storing non-upgraded fractions.
Djerba waste management project
The project includes:
• the collection of solid waste and sweeping in the Perimeter of the Concession;
• the design, construction, equipment and commissioning of a mechanical-biological treatment center (MBT) for households, including landfills for non-recoverable residues after bio-stabilization;
• the operation, maintenance and monitoring of the new MBT center and existing transfer centers and possibly carried out by the concessionaire,
• slaughterhouse waste management
For the MBT, the specifications of the project of the concession provides a MBT based on recycling and recovery and bio-stabilization of the ultimate fraction cannot be valued. The concessionaire will therefore aim to maximize the quantities recycled or recovered in the form of solid recovered fuel (SRF) or compost for source-sorted organic waste or other solutions.
With reference to the 3 solutions explained above, this is therefore Solution 3, which provides for energy recovery by solid fuel production.
The concessionaire will propose viable, cost-effective and modular waste recovery solution that minimize landfilling as much as possible. The waste must necessarily be bio-stabilized before burial in the bins. The objective stated by the grantor is that the burial does not exceed 45% of the volume of the incoming waste (expressed in mass). The bidder proposing the lowest landfill rate will be the best scored technically. However, the proposed landfill rate in the technical offer will be contractually binding.
Any solution proposed by the Concessionaire must be the subject of an economic study to justify its interest for the Djerba Municipality in terms of the environment in general and its financial impact on the project. The areas of valorization to be favored are agriculture (clean compost resulting from separated organic waste at the source) and energy. The tenderer may also propose under his responsibility any other waste recovery solution if these are realistic and make it possible to achieve the objectives of this valuation.
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Project stage info
Stage 1: Initial Government Announcement
Government of Tunisia
Form of project announcement
In the current situation the municipalities that are responsible for their collection must
deliver the collected waste either to an approved transfer station or to one of two approved landfills: the Jebel Chekir landfill and the Kabouti landfill. However, it is noted that on the one hand the waste is not collected in its entirety, and that on the other hand the waste collected is not all delivered in these approved facilities; there are several illegal dumps.
In fact, only the Jebel Chekir landfill, built in 1999, is now in operation although it is subject to opposition from the neighboring population due to nuisance: odors and pollution of the water resulting from a poor leachate management. The use of the other dump, that of Kabouti, was prevented because of the protests of neighboring residents.
The project contributes to the implementation of an integrated waste management system in Greater Tunis, and improves the sanitary conditions of the neighboring populations of landfill sites.
The project contributes to the preservation of the environment. The project is necessary to eradicate the illegal deposits of waste that are a source of contamination. This concerns groundwater contaminated by untreated leachates. This also applies to the atmosphere contaminated by the fumes from landfill fires and the flight of dust or light waste.
More particularly, the project will modify the characteristics of the waste to be buried, and consequently reduce the environmental impact of the landfill and the resulting nuisances:
• Reduction of the amount of waste to be land filled: a reduction of the amount of waste from 40 to 80% can be generated by the MBT.
• Reduction of environmental emissions (leachate, biogas, odors, etc.)
• Reduced leachate management issues. MBT reduces the amount of leachate, reduces leachate concentration, reduces the amount of concentrate to be removed, and uses fresh leachates to humidify MBT windrows.
• Reduction of the amount of biogas
Indicative timetable of project development
• Procurement phase: 2018-2019
• Construction Phase: 2019-2020
• Operation Phase: 2020-2040
There are no Project documents available at this time
Project looking for additional PPF assistance
Project looking for additional MDB assistance
Is project multi jurisdictional?
Stage 2: Project Investigation
185.4 M USD 530 M TND
Indicative Funding Source
Have any external advisors been appointed yet
Is the project contained in national/sub national infrastructure plan or strategy
Please outline any studies (for example environmental, engineering etc.) that will be completed prior to a full business case development
National strategic study
Opportunity for Private Sector Involvement
Construction, Operations, Not yet known
Stage 3: Start of Project Feasibility / Business Case
Legal Advisors Appointed
Financial Advisors Appointed
Technical and Other Advisors (inc Project Preparation Facility) Appointed
Is a Business Case Being Prepared?
Business Case Prepared By
Preparer company/department name
Government of Tunisia