Irrigation and Water Engineering

Irrigation and Water Engineering

Investigating the effects of desalination effluent on the physical and chemical factors of sea ‎water and macrobenthic communities (Norwejhe desalination plant, Bandar Shirino)‎

Document Type : Original Article

Authors
Mohammad Garami
Mohammad Bagher
maryam mohammadiroozbahani
Department of Environment, Ahvaz Branch, Islamic Azad University, Ahvaz, Iran
10.22125/iwe.2024.426950.1770
Abstract
In this study, the effects of salinity pollution and temperature of the effluent of the Norwegian ‎desalination plant on the physicochemical factors of sea water and ‎macrobenthic communities were investigated. Among the physical and chemical factors, the most changes ‎were related to salinity and temperature and were measured between stations 1 and 8 (P<0.05). ‎In the cold season, the salinity and temperature at station 1 (freshwater effluent outlet) were ‎‎38.67±0.32 ppt and 23±0.58 °C, respectively, and at station 8 (control point), 0.78 ppt. 35.67 ± ‎‎19.33 ± 0.21 degrees Celsius and in the hot season, the salinity and temperature in station 1 were ‎‎36.33 ± 0.60 ppt and 31.67 ± 0.17 degrees Celsius, respectively, and 40.67±0.23 ppt and ‎‎35.67±0.10 °C were measured at station 8. In this study, the predominance was with Amphipoda ‎in summer and Isopoda in winter. Pearson's correlation showed a negative and significant ‎relationship between the density of macrobenthos with salinity and temperature. The diversity ‎index in station 1 was the lowest compared to the reference station. The findings of this study ‎show the effect of desalination wastewater discharge on the physical and chemical characteristics ‎of water and the population of macrobenthos. Among the investigated parameters, salinity and ‎temperature were the most effective influencing parameters, which decreased with the distance ‎from the wastewater discharge site.‎
Keywords
desalination
macrobenthos
coastal control
physical and chemical parameters&‌lrm
Subjects
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