Methodology
45
of Souk-Ahras, only 19205 of the population of the municipality of Taoura are supplied with
drinking water, representing 78% of the population's satisfaction rate.
5.2. Sanitation
Wastewater
In order to identify the existing discharges in the area, a survey was carried out on site
by a hydraulic engineering firm with the help of the municipaliti’s technical services. This
revealed that the Taoura municipality as a whole has two major watersheds:
Oued Mellegue: located to the south of the municipality, this is an effluent of Oued
Medjerda in Tunisia.
Oued Medjerda: Located to the north of the municipality, this is considered to be a
main collector, flowing towards the east of the state before emptying into the
Mediterranean (Gulf of Tunisia).
These discharges all flow openly into talwegs and watercourses, which are sometimes
located close to dwellings, causing inconvenience for the population and pollution of all
watersheds, leading to the risk of water-borne diseases. This pollution can also have a major
impact on the main activity of the locality.
Stormwater
The locality is characterized by the existence of natural watercourses and talwegs
that allow stormwater to drain away, as well as ditches that collect stormwater and
discharge it into natural watercourses.
6. Sizing the treatment plant
Sizing a treatment plant is always preceded by determining the origin of wastewater
discharges, the quantity of stormwater, as well as the population to be served and the anticipated
wastewater flows based on demographic data and growth projections. In addition, wastewater
analysis and pollutant load calculations are a very important phase in the design of a treatment
plant.
6.1. Estimated population connected to the planned sewerage network
According to the Souk-Ahras state planning department, the latest census data for 2008
indicates that the population of Taoura is 18933 inhabitant, with a growth rate of 1.55%. The
future evolution of the population at different horizons is determined by the following formula:
45
of Souk-Ahras, only 19205 of the population of the municipality of Taoura are supplied with
drinking water, representing 78% of the population's satisfaction rate.
5.2. Sanitation
Wastewater
In order to identify the existing discharges in the area, a survey was carried out on site
by a hydraulic engineering firm with the help of the municipaliti’s technical services. This
revealed that the Taoura municipality as a whole has two major watersheds:
Oued Mellegue: located to the south of the municipality, this is an effluent of Oued
Medjerda in Tunisia.
Oued Medjerda: Located to the north of the municipality, this is considered to be a
main collector, flowing towards the east of the state before emptying into the
Mediterranean (Gulf of Tunisia).
These discharges all flow openly into talwegs and watercourses, which are sometimes
located close to dwellings, causing inconvenience for the population and pollution of all
watersheds, leading to the risk of water-borne diseases. This pollution can also have a major
impact on the main activity of the locality.
Stormwater
The locality is characterized by the existence of natural watercourses and talwegs
that allow stormwater to drain away, as well as ditches that collect stormwater and
discharge it into natural watercourses.
6. Sizing the treatment plant
Sizing a treatment plant is always preceded by determining the origin of wastewater
discharges, the quantity of stormwater, as well as the population to be served and the anticipated
wastewater flows based on demographic data and growth projections. In addition, wastewater
analysis and pollutant load calculations are a very important phase in the design of a treatment
plant.
6.1. Estimated population connected to the planned sewerage network
According to the Souk-Ahras state planning department, the latest census data for 2008
indicates that the population of Taoura is 18933 inhabitant, with a growth rate of 1.55%. The
future evolution of the population at different horizons is determined by the following formula: