Epuration des Eaux Usées par Filtre Planté (Phytoépuration) et Réutilisation pour l’Irrigation. Application à la Ville d’Ouled Djellal

ROKBANE, ROKBANE Abdelmadjid (2023) Epuration des Eaux Usées par Filtre Planté (Phytoépuration) et Réutilisation pour l’Irrigation. Application à la Ville d’Ouled Djellal. Doctoral thesis, Faculté des Sciences et de la technologie.

Text These de doctorat Rokbane.imp.pdf Download (9MB)

Abstract

This work investigates the possibility of using an constructed wetland system for municipal wastewater management with reuse strategies for landscape irrigation in the city of Ouled Djellal, Algeria. Constructed wetlands (Phyto-purification) are treatment systems that use natural processes involving wetland vegetation, soils, and their associated microbial assemblages to improve water quality. The design of this system was based on the characteristics (volume and physico-chemical properties) of the wastewater and the urban plan of the city studied. Several green spaces have been chosen to integrate these natural resorts. The average COD/BOD5 value for the 18 sites was found to be 1.82 (3), indicating that the effluents have good biodegradability and that the wastewater studied is primarily of domestic origin. The peak flow of raw sewage varied from 0.14 L/s to 8.87 L/s, which was used for the calculation of the drip network for landscape irrigation. The sizing of the phyto-purification stations also showed a difference between the studied sites and the planted surface; they varied from 77 m2 to 11406 m2 . In sites: 2, 3, 5, 6, 7, 9, 10, 15 and 17, an HF-HV configuration has been introduced, while for sites: 4, 11, 12, 14, 16, and 18, a horizontal flow system has been adopted. The calculated residence times showed that the values vary from 1.5 days to 4.5 days in the filter basins. Indeed, the drip network proposed for landscape irrigation has been calculated on the basis of the water needs of the plants, knowing that the drip network includes main pipes, ramp holders, and ramps. All the results showed that the adoption of a system treatment and reuse is more effective in reducing pollution in the urban environment while guaranteeing the possibility of reusing the treated water for irrigation and eliminating water shortages in the city by harnessing sewage

Actions (login required)

View Item