The project to expand the Tanger Drinking Water Treatment Station, within the scope of the Tangier Water Supply Improvement programme, was one of Ayesa's first water projects in Morocco and the continuation of its extensive experience in supply and purification projects all over the world.
The contract required increasing treatment capacity from 1,200 liters/seconds to 2,400 liters/second, based on advanced solutions integrated in an operational facility, guaranteeing the homogeneity of processes, and developing solutions whose implementation will have a minimum impact on the functioning of a critical public service.
The treatment line consists of presedimentation, mixing and flocculation, lamellar decanting and filtration. A sludge line has also been designed with thickened and dehydrated centrifuges.
The contract for the "Office National de l'Électricité et de l'Eau potable" ("ONEE" - National Electricity and Drinking Water Board), the administrative authority that immediately tendered the works based on the submitted documentation: "APD (Avant-Projet Détaillé)" (FEED - Front End Engineering Design) and "DCE (Dossier de Consultation des Entreprises)" (Consultation Dossier).
The main activities carried out were:
- Collection, analysis and updating of information.
- Topographic study. Geotechnical study. Analysis of the characteristics of raw water
- Basic studies. Analysis and selection of alternatives for the treatment system.
- Environmental impact study.
- Project documents, "APD (Avant-Projet Détaillé)" (FEED - Front End Engineering Design) and "DCE (Dossier de Consultation des Entreprises)" (Consultation Dossier), for all disciplines.
- Economic assessment.