| Abstrakt: |
Tengra tila gas field blowout was a key event in Bangladesh's gas sector. Two blowouts in a row at the gas field had an impact on the country's gas industry, the environment of the surrounding area, and the country's socio-economic situation. To investigate the effects of the blowouts on surface water, ten samples were gathered from the gas field's surrounding water bodies. Gas-emitting waterbody samples and petroleum disposal waterbody samples were separated into two categories. The water quality was then assessed using 13 parameters. Digital meters were used to monitor pH, electric conductivity, total dissolved solids, temperature, and dissolved oxygen. Biochemical oxygen demand and total suspended solids were measured with BOD5 and filtration methods, respectively. Fe and Mg were determined using atomic absorption spectrophotometry, Cl−, F−, SO42−, NO3− were determined by ion chromatography, and alkalinity was with titration. A significant finding was that the mean biological oxygen demand in gas-emitting waterbodies was 8.82, while it was 3.82 in waterbodies with petroleum disposal. The amounts of Fe (III) detected in three samples were 1.16, 1.11, and 1.40. Amount of biochemical oxygen demand, total suspended solids, Fe, and F− all exceeded EPA (Parameters of water quality: interpretation and standards, Environmental Protection Agency, Wexford, 2001) standards. With a score of 144.07, S-2 had the lowest quality of the samples, while S-10 had the highest, with a value of 37.26 in the modified water quality index. Poor condition comprised 33% of the samples, Excellent condition comprised 33%, and Good condition comprised 34%. Gas emissions had a significant impact on the final score. [ABSTRACT FROM AUTHOR] |
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