Iranian Journal of Applied Ecology

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Rajaei F. Study of Pollution Release from Imvasco Desalination Plant into the Oman Sea, Using the CORMIX Model. Iranian Journal of Applied Ecology 2025; 14 (1) :81-100
URL: http://ijae.iut.ac.ir/article-1-1267-en.html

One of the environmental issues associated with desalination plants, particularly reverse osmosis plants in coastal areas, is the discharge of highly saline effluent into the marine environment. The primary objective of this study is to investigate the salinity distribution of effluent from the Imvasco desalination plant using the Cormix numerical model. The goal is to optimize the design of effluent dilution and assess the suitability of water intake and discharge locations. Various scenarios were examined, including single-port and multi-port wastewater discharges, different port angles, the effects of varying flow velocities, and the influence of depth on plume behavior and concentration. The modeling results indicate that, at a depth of 5 meters with a single-port discharge, the configuration is not recommended. The results further suggest that using alternating ports increases plume dispersion toward the shore, while ports aligned in the same direction yield better outcomes. Ambient flow velocities showed minimal impact on the spread of the effluent salinity plume. In the optimal scenario, the water intake should be located approximately 505 meters from the shore at a depth of 16 meters, and the effluent discharge should be positioned about 325 meters from the shore at a depth of 8 meters.