Project Name: Construction of a wastewater treatment plant in the city of Guetar in the governorate of Gafsa
Project Owner : the National Office of Sanitation (ONAS).
Consistency of the works :
Daily flow : 1200 m3/d
Average total flow in BOD5 = 650 kg/d
Pumping station with a pressure pipe of 2.2 km in HDPE 250 PN 10 and a discharge pipe of 1.5 km in HDPE 315 PN6
3 treatment processes:
Mechanical: a building with a first floor with a surface area of 100m2
Biological: 2 aeration basins of 1200m3 capacity + 2 decanters of 300m3 capacity
Tertiary: 2 sand filters with 2 UV cells + a 40m3treated water tank designed for the irrigation of the plantations of the treatment plant and for the rinsing of the pipes in case of blockage
Project cost: 12,186,003.727 Tunisian Dinars and MTT’s share 4,474,647.000 Tunisian Dinars
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