| Title: |
Identification of the most correlated input and output physicochemical parameters in domestic wastewater at experimental treatment facilities in Nouakchott (Mauritania). |
| Authors: |
Salem, Mohamed Salem Mohamed; Dick, Brahim Ahmed; Tablenkou, Lalla; Yebouk, Cheikh; Sidi, Yahya Maham Ould; Rifi, Safa Khattabi; Souabi, Salah; Madinzi, Abdelaziz |
| Source: |
Journal of Ecological Engineering; 2026, Vol. 27 Issue 5, p225-232, 8p |
| Subject Terms: |
WASTEWATER treatment; BIOCHEMICAL oxygen demand; PRINCIPAL components analysis; SEWAGE; CHEMICAL oxygen demand; WATER quality monitoring |
| Geographic Terms: |
MAURITANIA |
| Abstract: |
The study was conducted on domestic wastewater collected at the National Sanitation Office monitoring station and treated using three experimental cylindrical filters (200 L) with a filtering medium 0.70 m high. The treatment achieved average removal efficiencies of 41.42% for biochemical oxygen demand (BOD₅), 39.11% for chemical oxygen demand (COD), and 23.30% for total suspended solids (TSS), all within acceptable ranges. Average removal rates of 40.50% and 57.64% were obtained for nitrogen and orthophosphate, respectively, along with a significant improvement in hydrogen potential (pH). The links between correlated variables were investigated using multivariate statistical methods, including principal component analysis and hierarchical clustering. The results show a significant reduction in pollutant loads after treatment, particularly in BOD₅, COD, TSS, nitrogen, orthophosphate, and hydrogen potential. PCA highlights the principal axes of variability, and hierarchical classification distinguishes groups of parameters with similar water quality. [ABSTRACT FROM AUTHOR] |
| : |
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| Database: |
Complementary Index |