Page 33 - AL BUHAIRA RAPPORT 2022

6 Periodic maintenance of the water

surface and related facilities
The work of harvesting algae Maintenance works of the water gates of Kheireddine channel, Chaklee
The company is keen to monitor the condition of the facilities, to ensure and removing weeds and and Tunis Marine
their proper operation, and carry out periodic maintenance works following floating dirt from the water Maintenance of the lake’s hydraulic gates, which began in September 2021
an annual maintenance program in order to preserve the hydrodynamic surface and ended in June 2022, continued.
system and the continuity of the environmental balance of the lake.
Works of clearing and maintaining rain storm outfall ducts
Algae harvesting works The dredging and maintenance of storm estuaries were launched in
This year, the algae harvesting works continued until the end of December September 2021 and are nearing completion. The three channels were
2022 due to the continued high temperatures and lack of rain during dredged to a depth of two meters and about 97.000 m³ of sediment were
the winter season, thanks to the readiness of the fleet of water surface removed. The works were carried out by “SOMATRASM” company.
maintenance equipment (algae harvesting machines, boats, lifting machine,
trucks ....). that the company’s interests are keen to maintain continuously. Dredging of the rainwater drainage channel that flows into the Lake
In the framework of preserving the environmental status of the
The removed amounts of sphagnum moss to aerate the adjacent lake, the company has coordinated with
spaces the relevant authorities to clear and
maintain some of the rainwater
streams leading to the lake,
which suffers from the
4000 4600
Ton Ton accumulation of sediment
2021 2022
and dirt.
The company has also
4000 3700
Ton Ton cleared some places inside
2020 2018
4400 the lake where sediment has
Ton
2019 accumulated and is hampering
the process of sailing and
navigation within the water body.

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