The lagunage for the purification of waste water in the Sahara: an approach integrated into the environmental conditions

N. M. Chabaca, A. Kettab, M. Nakib, S. Karef, S. Benziada, S. Benmamar, W. Boumalek, H. Bouanani, Y. Djillali


Abstract: The water resources currently exploited in the Algerian Sahara, are in majority underground. . Contrary to the northern zone where the discharge system of water of the rivers is done towards the sea, carrying with them waste water purified or not; in the South, the rivers at the time of the risings, run towards the interior of the grounds, involving with them waste water, contaminating the sebkhas and the tablecloths. It is the case in the valley of M’zab and the zone of Ouargla, wedged mediums where the rejections pollute the ground water directly. The treatment of waste water became a requirement and a social and environmental stake impossible to circumvent. The process of treatment by lagunage is used in the purification plants of the towns of Ghardaïa and Ouargla It is ecological insofar as it does not use any chemicals to treat waste water and to evacuate them without risk towards the receiving natural environment. Fragile environmental balance and the ecosystem of the Saharianunit, must be safeguarded and for this reason it is important to remove the harmful effects in residential areas; to protect the receiving medium and the ground water; to make possible the re-use of waste water purified at agricultural ends.

Full Text:



Kettab A. Les ressources en eau en Algérie: stratégies, enjeux et vision. (Water resources in Algeria: strategies, stakes and vision.)Desalination. (2001), Vol. 136, pp. 25-33.

Boualla N, Hadj Hassan B, Benziane A. L’expérience algérienne en matière d’épuration des eaux usées The Algerian experiment as regards purification of waste water. Science Lib Mersenne, (2011), Vol. 3. 111115.

Kessira M. Gestion de l'irrigation avec les eaux non conventionelles.(Management of the irrigation with no conventional water).(2005)

SIEE. Pollutec. 13e Salon international des Equipements, des Technologies et des Services de l'Eau et de l'Environnement13th International fair of the Equipment, Technologies and the Services of Water and the Environment, SIEE-Pollutec'2017. . Février (2017).

DSA. Direction des services agricoles. Atlas agriculture, Rapport annuel Direction of the agricultural services.Atlas agriculture, Annual report, Ghardaïa, 14p. (2012)

Bonnard et Gardel.Étude d'assainissement et de protection contre les crues de la vallée de l'oued M'Zab. Avant-projetdétaillé des ouvrages de rétentionamont.Study of cleansing and protection against the risings of the valley of the wadi Me Zab. Detailed preliminary draft of the works of retention upstream, volume 2/4 annexes, Ghardaïa, 165p.(2000).

JORA. Normes de rejets dans le milieu récepteur.Journal Officiel de la RépubliqueAlgérienne Standards of rejections in the receiving medium. Official journal of the Algerian Republic, N° 46, 7-12.(1993

JORA. Annexe, spécifications des eaux usées épurées utilisées à des fins d'irrigation.Journal Officiel de la RépubliqueAlgérienne specifications of purified waste water used at ends of irrigation. Official journal of the Algerian Republic, N° 41, 18-21.(2012).

Remini B. La problématique de l'eau en Algérie du Nord. (Problems of water in Algeria of North.)Larhyss Journal. Juin (2010), 8, pp. 26-46.

Kessira,M. Conception d’un projetd’irrigations Design of a project of irrigations /DTI-DDAZASA- MADR. (2013).

Magesana G N, Magesana J.C, Williamsona G W, Yeatesb A Rh, Lloyd-Jonesa. Wastewater C:N ratio effects on soil hydraulic conductivity and potential mechanisms for recovery. Bioresource Technology.( 2000), 71.

Herpin U. Chemical effects on the soil–plant system in a secondary treated wastewater irrigated coffee plantation—A pilot field study in brazil. agricultural water management. (2007), Vol. 89, 105-115.


  • There are currently no refbacks.