The Influence of Discharge Effluents on the River Nile Water Quality at Aswan Governorate, Egypt | ||
| Egyptian Journal of Aquatic Biology and Fisheries | ||
| Article 39, Volume 25, Issue 3, May and June 2021, Pages 589-606 PDF (1.01 M) | ||
| Document Type: Original Article | ||
| DOI: 10.21608/ejabf.2021.179820 | ||
| Author | ||
| Sayeda M. Ali et al. | ||
| Abstract | ||
| The disposal of El-Sail drain, Kom Ombo drain, Edfu ferroalloys factory, and Edfu sugar cane factory around Aswan city poses a serious threat to the River Nile waters, especially El-Sail and Kom Ombo drains which recorded higher microbial load. Kom Ombo drain recorded higher total bacterial counts (TBC) at 22 ºC (1800 x103 cfu/ml), thermophilic bacteria (259 cfu/ml) and spore-forming bacteria (15.8 x103 cfu/ml). While El-Sail drain recorded higher TBC at 37 oC (137 x103 cfu/ml) and higher values for indicator bacteria (total coliforms, faecal coliforms, and faecal streptococci). In addition, warmer seasons (spring and summer) showed higher counts of indicator bacteria Salmonella sp. and Shigella sp. in 22 and 30 % of samples, respectively, whereas Escherichia coli was detected in all sites, recording the highest values at El-Sail drain samples. Furthermore, El-Sail drain samples recorded the highest values for electrical conductivity, total dissolved solids, biochemical oxygen demand, NH3, NO2- and PO43-, while Kom Ombo drain samples recorded the highest values for water temperature and NO3-. Ranks of water quality index (WQI) were good in all sites, except for the disposal sites which ranged from fair to marginal. In conclusion, the River Nile water at Aswan governorate is heavily polluted, especially at El-Sail drain and Kom Ombo drain. Consequently, treatment and safe disposal of different industrial and domestic wastes are recommended. | ||
| Keywords | ||
| River Nile pollution; Microbial water quality; Chemical water quality; Water quality index | ||
|
Statistics Article View: 262 PDF Download: 673 |
||
