نوع مقاله : پژوهشی
نویسندگان
1 علوم و مهندسی آب، پردیس بینالملی کیش، دانشگاه تهران.
2 دانشگاه تهران
چکیده
کلیدواژهها
موضوعات
عنوان مقاله [English]
نویسندگان [English]
Desalination of seawater is one of the most effective methods, and in some cases, the only possible method for producing drinking water. The combined effect of desalination plants and port structures on the coastal environment can sometimes have specific environmental consequences. The dispersion from the desalination plants, especially the changes in salinity and temperature, has significant effects on coral reefs. In this paper, the effect of the development of the commercial port of Kish Island with regard to the desalination plants was investigated using field measurements and numerical modeling. In 3 stages of field measurment, water quality parameters were measured from 24 different points near the northern coast of Kish Island. The speed and direction of the current were also measured to verify the accuracy of the numerical modeling. The current and dispersion of thermal and salinity pollution were modeled using MIKE21 two-dimensional model. The computational domain was about 30 square kilometers in size and was discretized into four zones using four different element sizes. Comparison of the numerical modeling results with field measurements indicated acceptable accuracy. The results of the modeling of the salinity diffusion pattern indicate a significant spread in the zone surrounding the outfall of desalination plants and the Kish Island commercial port. Around the outfall, average of temperature and electrical conductivity (EC) increased by 16% and 14%, respectively. It is due to the effect of west breakwater on current reduction that resulted in increasing brine concentration. The ultimate point where the ambient temperature has increased by 3 degrees is 170 meters from the outfall. Therefore, considering the impact of temperature changes on coral reef is critically important. Given the absence of measured data on water quality parameters, current, and velocity direction across various tides at this location, the findings of this study contribute to a better understanding of the environmental status of the area.
کلیدواژهها [English]
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