Reuse of agricultural drainage water and wastewater for crop irrigation in southeastern Algeria

Open Geosciences, Journal Year: 2025, Volume and Issue: 17(1)

Published: Jan. 1, 2025

Abstract Water resources are regarded as the primary impediment to proper human development in arid and desert regions, situation has been exacerbated by current climate change. The same phenomenon can be observed Ziban region of Biskra wilaya, where agriculture consumes most water resources. It is due increase size reclaimed agricultural areas from year region’s urban centres expand, causing wastewater discharged into sewers Oued Djedi. However, during our field survey, we discovered that some farmers their crops with drainage mixed wastewater. This study aims determine how change affecting region, well damage caused watering sanitary water. A statistical analysis climatic parameters (mainly rainfall) physiochemical at six sampling points Occidental Zab was carried out. We measured nitrates, calcium hardness, chloride ions, chemical oxygen demand (COD) biochemical (BOD5). results show a reduction total annual rainfall rate, 208.6 mm 1996 19 2017. As for analysis, following were noted: SO 4 2− (mg/l) [545.45–3436.36], NO 3 − [0.75–3.94], BOD5 [10–50], COD (mgO 2 /l) [14.12–72.25], Cl [331.33–1692.16], Ca 2+ [352.68–643.23], Mg [120]. emphasises importance comprehensive assessment agriculture, particularly because use it crops, need targeted interventions mitigate potential challenges associated damage. result, these findings help decision-makers local stakeholders establish filtration plants, improve farmers’ use, protect this valuable resource.

Language: Английский

New exploration model and engineering application of urban karst groundwater channel based on the 3D electrical method

Frontiers in Earth Science, Journal Year: 2025, Volume and Issue: 13

Published: April 22, 2025

The detection of karst groundwater channels is great significance for the development underground cities and prevention control geological disasters. Aiming at characteristics high spatial variability channels, a new exploration model based on three-dimensional (3D) electrical method proposed. Combined with an urban project in Hunan Province, China, efficiency effect mode one-shaped layout arrangement conventional electric are compared analyzed. main process this as follows: Firstly, determine X Y directions electrophysical according to direction anomalies area. Then, length measuring point spacing directions, grid parameters determined. Finally, coordinates all power supply grids actual relative area calculated, points arranged pattern one. feasibility above has been verified through project, results show that significantly improved method, excellent highly applicable.The comparison data shows number supplies acquisition 3D 121 14520 respectively, while only 17 2046 reduction 85.9%. research can provide some reference scheme design channels.

Language: Английский