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Calculation of Water Quality Index (WQS) in Odele Estuary and Mahshahr Petrochemical Salt Extraction Ponds
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Abstract: (311 Views) |
Water quality serves as a key indicator of aquatic ecosystem health and is influenced by various physicochemical parameters. This study aimed to investigate temperature, pH, salinity, dissolved oxygen, nitrate, nitrite, phosphate, and WQI in Odleh Creek and the salt pans of Mahshahr. Sampling was conducted over one year (2023-2024) at 7 stations with three replicates (3 stations in Odleh Creek and 4 stations in salt evaporation ponds) seasonally, following standard methods. The results revealed that dissolved oxygen concentration at Station 3 during autumn (3.46 mg/L) was below the permissible limit for aquatic life, posing a potential risk to aquatic organisms. Nitrate levels exceeded aquaculture standards at all stations but remained within industrial limits. Phosphate exhibited a decreasing trend in the pond stations. Other parameters fell within safe ranges for aquatic health. The WQI classified water quality as "poor" at Stations 1–5 and "very poor" at Stations 6–7. In conclusion, anthropogenic factors such as urban and industrial wastewater discharge significantly degraded water quality, necessitating comprehensive water resource management strategies. |
Article number: 1 |
| Keywords: Water Quality Index (WQI), Surface water quality, Odleh Creek, Salt evaporation ponds, Dissolved oxygen, Nutrient pollutants |
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Full-Text [PDF 720 kb]
(151 Downloads)
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Type of Study: Research |
Subject:
Special
Received: 2025/06/10 | Accepted: 2025/09/28 | Published: 2025/09/28
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