Original scientific paper
https://doi.org/10.15255/KUI.2022.040
Accumulation of Heavy Metals in Soils Irrigated by Treated Wastewater: A Case Study from the Northwest of the Haut Chelif Plain, Algeria
Yacine Rata
; Djilali Bounaama University of Khemis Miliana, Department of Biology, Agricultural Production and Sustainable Development of Natural Resources, Khemis Miliana, Algeria
Abdelkader Douaoui
orcid.org/0000-0002-3941-1312
; University Center of Tipaza, Laboratory of Management and Valorization of Agriculture and Aquatic Ecosystems (LMVAAE), Tipaza, Algeria
Ahmed Douaik
orcid.org/0000-0001-7374-4674
; Research Unit on Environment and Conservation of Natural Resources, Regional Center of Rabat, National Institute of Agricultural Research (INRA), Rabat, Morocco
Mohamed Rata
; Djilali Bounaama University of Khemis Miliana, Department of Biology, Agricultural Production and Sustainable Development of Natural Resources, Khemis Miliana, Algeria
Abstract
Long-term irrigation by treated wastewater (TWW) can lead to the accumulation of heavy metals (HM) in the soil inducing negative effects on the pedo-environment. In this study, plots irrigated with TWW were studied to estimate the accumulation trends of HM and their impact on the physicochemical properties of the soil over a period of four years under a gravity irrigation system on turf with no fertiliser input. Soil samples were taken at two depths (0 to 20 cm: H1 and 20 to 40 cm: H2). The results of this study show that TWW are a main source of increase in HM in the soil by well-identified conditions, the degradation of the environment in general and on the physicochemical quality of soils in particular. It was concluded that the use of TWW in long-term irrigation enriches the soils with heavy metals, by main factors such as TWW composition, climatic conditions, soil type, and irrigation frequency.
Keywords
heavy metals; treated wastewater; irrigation; soil; Haut Chelif
Hrčak ID:
291084
URI
Publication date:
11.1.2023.
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