Expanding water reuse in the Middle East and North Africa: policy report

Mateo-Sagasta, Javier; Nassif, Marie Helene; Tawfik, Mohamed; Gebrezgabher, Solomie A.; Mapedza, Everisto; Lahham, Nisreen; Al-Hamdi, M.

doi:10.5337/2023.203

Cited by 3 publications

(2 citation statements)

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“…Primary Salinization occurred through natural processes such as physical or chemical weathering and transfer from the source material, geological deposits, rising of salt affected ground water and chemical weathering of soil minerals [6,16]. In Awash river basin, where Fantale irrigation projects exist, the primary cause of salinity is the availability of residual or fossil salts from past alluvial, colluvial, lacustrine, and/or marine deposits of weathered primary minerals of igneous rocks which are rich in sodium [22].…”

Section: Source Of Soil Salinity Problem At Irrigation Schemesmentioning

confidence: 99%

Characterization and Mapping of Soil Salinity Status at Small-Scale Irrigation Farm: The Case of Fantale Irrigation Project Sites

Hunde,

Shelemaw,

Ambomsa

et al. 2024

IJSTS

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Agricultural production and productivity can be adversely affected by the presence of excessive salts in soils particularly in semi-arid and arid areas. Knowledge of the salinity/sodicity of the soil and the quality of the irrigation water is essential for managing agricultural fields effectively and increasing the output and productivity of the lands. This research was initiated with the objectives of characterizing and Mapping of soil salinity status at small scale irrigated areas of Fantale district and identifying the most affected irrigation scheme so as to design appropriate soil salinity management. The study was conducted at Fentale district of Galcha, Gola and Dire Sade irrigation schemes. Soil samples were collected from the surface using augur, and from pits at different depth interval and analyzed for pH, EC, Na+, ESP, SAR, Ca2+, Mg2+, K+, and CEC. The result was compared with the standards set by FAO system to classify soil and water salinity. Accordingly, it was identified that Galcha irrigation scheme was characterized as sodic due to very strong sodium concentration with average ESP of 53.2% and EC 3.95 mmhoms/cm and pH about 9.25. On the other hand, Gola and Dire Sade Irrigation schemes were characterized as moderately and slightly sodic respectively. Sodium was the dominant soluble cation, followed by calcium, magnesium, and potassium in all soil depths and schemes. Beside primary Salinization of natural processes such as physical or chemical weathering parent material, and discharge Basaka Lake to the downstream, was the main source of salt build-up in the upper layers of the soil at Galcha irrigation scheme. On the other hand, irrigation water analysis indicated that water used for irrigation at all irrigation schemes were slightly sodic. Therefore, the study underscores the need for a scientific reclamation of sodic soils primarily at Galcha Irrigation scheme where sodium concentration in the soil was very strong.

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Section: Source Of Soil Salinity Problem At Irrigation Schemesmentioning

confidence: 99%

Characterization and Mapping of Soil Salinity Status at Small-Scale Irrigation Farm: The Case of Fantale Irrigation Project Sites

Hunde,

Shelemaw,

Ambomsa

et al. 2024

IJSTS

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“…In addition, the MENA region is projected to become a global hotspot for droughts with decreased rainfall, decreased runoff and increased evaporation by 2050 (Mateo-Sagasta et al, 2022).…”

Section: Wastewater Treatment and Reuse In Mediterranean Regionmentioning

confidence: 99%

Eco-innovative technology for wastewater treatment and reuse in MENA region: case of Lebanon

El Moll

2023

Front. Sustain.

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Water scarcity is a significant problem worldwide especially in Middle East and North Africa, to which the reuse of wastewater after appropriate treatment could offer a sustainable solution. With recent advances in wastewater treatment technologies and reuse, it is possible to obtain wastewater effluent of consistently high quality, which can then be reused in the agricultural sector. Thus, facing of water shortage, deficiency of sanitation and pollution by wastewater in the Mediterranean region, the decentralization using eco-innovative technology, focuses mainly on the wastewater treatment on-site and on the local recycling and reuse of resources contained in domestic wastewater, represents a real and well solution. Therefore, sustainable solutions for wastewater management will be discussed, with a focus on the role of innovative technology with detailed description of the wastewater treatment process. Additionally, the implications of wastewater reuse in agriculture sector in the context of the circular economy as potential solutions will also be presented in this paper.

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