Trihalomethanes formation in marine environment in front of Nuweibaa desalination plant as a result of effluents loaded by chlorine residual
| Autor: | Alaa I . Khedr, Mohamed A. El Sawy, M. E. Moustafa, Mohamed A. Hamed, Yosry A. Soliman |
|---|---|
| Rok vydání: | 2017 |
| Předmět: |
Biochemical oxygen demand
chemistry.chemical_element 02 engineering and technology 010501 environmental sciences Aquatic Science Oceanography 01 natural sciences Desalination lcsh:Aquaculture. Fisheries. Angling chemistry.chemical_compound 020401 chemical engineering Chlorine Organic matter 0204 chemical engineering lcsh:Environmental sciences Ecology Evolution Behavior and Systematics 0105 earth and related environmental sciences Water Science and Technology Total suspended solids lcsh:SH1-691 lcsh:GE1-350 chemistry.chemical_classification Outfall Disinfection byproducts chemistry Environmental chemistry Environmental science Seawater Bromoform Trihalomethanes Residual chlorine Desalination brine |
| Zdroj: | Egyptian Journal of Aquatic Research, Vol 43, Iss 1, Pp 45-54 (2017) |
| ISSN: | 1687-4285 |
| DOI: | 10.1016/j.ejar.2017.01.001 |
| Popis: | Trihalomethanes have been identified as the most important disinfection byproducts resulted from using chlorine in desalination plants. Nuweibaa desalination plant was chosen to study their effluents impacts on the marine environment in front of the plant in the coastal area of Gulf of Aqaba. Surface and bottom Water Samples were collected from nine locations in the outfall area of this desalination plant during spring and autumn 2014, and analyzed for water temperature, pH value, Salinity, Dissolved Oxygen, Biological oxygen demand, Oxidizible organic matter, Total, fixed and volatile suspended matter, residual chlorine (free and combined) and trihalomethanes. High total chlorine dosage discharged from the desalination plant achieved high levels of trihalomethanes in the receiving seawater of the outfall area. It has been estimated that about 14524.65671 kg of BOD, 74123.4 kg of OOM, 166896.4375 kg of total suspended solids, 623.634 kg of free chlorine, 469.21 kg of combined chlorine, 206.64 kg of chloroform and 76.48 kg of bromoform are discharged annually from this plant into the Gulf of Aqaba affecting the marine ecosystems. The results of THMs showed that the two main forms of THMs formed in the receiving seawater were chloroform and bromoform and ranged between (5.09–156.59), (2.82–566.06) μg/L respectively. High pH and High combined chlorine concentrations favored the formation of high concentrations of chloroform. |
| Databáze: | OpenAIRE |
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