Impact of wastewater from the rural commune of Jmaa Moulblad on the physico-chemical quality of the waters of the Grou River (Rabat region, Morocco)

Arifi, Karim; Tahri, Latifa; Abid, Abdallah El; Hefiane, Fatima Zahra; Elblidi, Souad; Yahyaoui, Ahmed; Fekhaoui, Mohammed

doi:10.1051/e3sconf/20183701008

Cited by 2 publications

(1 citation statement)

References 7 publications

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“…This is connected with oxidoreduction reactions and self-purification processes in river waters. A high level of COD is associated with the presence of organic substances in the water, which undergo direct oxidation using oxygen contained in the water, or biochemical conversion to inorganic compounds with the participation of microorganisms, using oxygen absorbed from the water [49][50][51]. The research demonstrated that COD concentration increased downstream, which may be related to the accumulation of organic pollutants of municipal and agricultural origin [52].…”

Section: Discussionmentioning

confidence: 95%

Changes in Selected Water Quality Parameters in the Utrata River as a Function of Catchment Area Land Use

Dębska

Rutkowska

Szulc

et al. 2021

Water

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Surface waters are very important for society, as they are a source of potable water, as well a water supply for agricultural, industrial and recreational purposes. This paper presents changes in the quality of the water in the Utrata River, along its entire length, as a function of the catchment area’s land use. Water-quality measurements were carried out once a month for a total period of one year (April 2019–March 2020) at 24 measurement points. The concentrations of the following compounds were measured: total phosphorus, ammonia nitrogen and nitrate nitrogen, dissolved oxygen, and chemical oxygen demand. The results were compared with the limit values specified in the Regulation of the Minister of Maritime Economy and Inland Navigation. In order to determine the impact of land use on water quality in the Utrata River, principal component analyses (PCA) were conducted. The research demonstrated a considerably negative impact of agricultural land use and the presence of urban areas on the water quality of the Utrata River, with elevated concentrations of total phosphorus, ammonia nitrogen, nitrate nitrogen and COD, and decreasing concentrations of dissolved oxygen. The presented results point to the need for effective strategies to mitigate the adverse impact of agriculture and urbanisation on the environment and surface waters.

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