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Natural sewage treatment station in Ghardaia

Benchmark structure for protecting water resources in extremely arid zone Ghardaia in the M’Zab Valley in Algeria acquires a natural sewage treatment station in natural lagoon.

Located 600 km south of Algiers, at the gate of the Sahara, the M’Zab Valley region must face up to a crucial problem of pollution of its water resources. Important implications for the local populations which live meanly from raising dates. To deal with this particular problem, a natural sewage treatment station in lagoon was implemented, laying more than 600,000 m² of waterproofing geomembrane of Teranap 331 TP elastomeric bitumen. The work was done by the Amenhyd contracting firm.

Teranap TP geomembrane has proved to be highly applicable to the site’s weather conditions, in particular during windy periods, since its weight makes it quite stable during the laying. Its insensitivity to the wide temperature swings encountered in this region, were also a decisive criterion in choosing this bituminous geomembrane. Its puncture resistance and its flexibility were also strong factors without forgetting the fact that it holds the Asqual Technical Certification.
Thanks to this project, the M’Zab Valley will return to its traditional conditions of hygiene and well-being. This benchmark work for the protection of the environment is going to generate positive effects with multiple implications:

• Ecological: drainage of sewage waters and protection of the water table;
• Economic: improvement of the yields of the date-groves with increased financial resources for the local population;
• Sociological: maintaining the population in place and reducing rural exodus;
• Cultural: return to the traditional balance of Mozabite traditions with the enhancement of the value of their oases.

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