WLeachate represents a major issue at this landfill. It is collected in tanks, then drained to a treatment plant, which in turn treats it and discharges treated water in water stream located less than 1 km upstream of the dam Chiba. That’s not the case as leachate is discharged directly in water streams in the area
Origin of the leachate
The leachate concentration in were calculated on the basis of specific water content in urban waste in Tunisia (70%).
In total, the Enkhila landfill receives an average volume of solid waste 800 tons/day (we believe that this average has increased to more than 1 200 tons/day following the problems at the Jbel Borj Chakir landfill), or about 1000 m3/day of waste. The volume of leachate generated is about 180 m3/day. This volume changes depending on the season.
To evaluate the results of effluents from the landfill, we adopted the qualities of leachate from the documentation made available by (ANGeD) since no data specific to the Enkhila site is available.
The three 3 leachate storage basins on site and they represent a great nuisance for residents of the region. This is an indicator that shows that the capacity of the treatment plant on site is insufficient, and /or is not working at full capacity
As opposed to the Jbel Borj Chakir landfill, there some positive aspects that should be emphasized:
1 - The ANGeD strengthened the existing station with a new mobile station with a capacity of 160 m3/day for emptying tanks rainwater leachate which constitute a nuisance factor for the local population.
2 - ANGeD covered one leachate pond.
3 – The operator has committed to recruit workers from the surroundingareas, affected by pollution from the landfill.
4 - The operator has significantly reduced the surface of the open front from more than 2,000 m3 less than 500 m3
Health Impacts related to the activities of the Enkhila landfill
In recent months, we have undertaken medical checks of residents Enkhila to identify potential impacts of activities of the landfill on their health. We have already reviewed literature and examined similar studies that have been undertaken by other NGOs and research centers in the United States and Europe over the past 40 years around landfills. The results vary: some studies conclude that there is no impact s other ones assert that residents of areas surrounding landfills have high run health risks such as respiratory disorders, cancer, birth defects ... We prepared a file for each resident examined containing detailed information about his health status as well as details on possible effects of pollutants from the landfill. We then conducted a statistical analysis of the results and fragmented them by gender (male / female), age groups (child / adolescent / adult) and the proximity of the landfill.
Preliminary results show that a significant number (higher than average) of local residents suffer from illnesses such as skin lesions that are likely caused to pollutants transported by the winds of the landfill to residential areas. At the moment, we have not been able to establish a direct link between the activities of the landfill and other type of illnesses in the population such as cancer for example. We intend to monitor the situation in the long term to see if there is a possibility of any serious negative impacts related to the activities of the landfill