2021, Vol. 2, Issue 2, Part A
Physicochemical characteristics including heavy metals of oilfield wastewater from Utorogu oilfield in Delta state
Author(s): Oyibo Ntongha and Obire Omokaro
Abstract: Oilfield wastewater has become a major pollutant in the environment as a result of oil and gas development. Toxic physicochemical components and heavy metals can be found in oilfield effluent. When oilfield wastewater is treated before being discharged into receiving bodies, its toxicity is lowered. Wastewater samples were collected using normal protocols during a six-month period at two-week intervals from three pits (pit 1, pit 2, and camp pit 1). The pH values ranged from 4.7-10.35, temperature 23.9 °C - 35.25 °C, turbidity (NTU) ranged from 3 – 324, TDS (Total Dissolved Solids) 12.5 - 18660 mg/l. Total suspended solids (TSS) values ranged from 3 - 548 mg/l. The values for Chemical Oxygen Demand (COD) in mg/1 ranged between 12 – 670.5 mg/l. The values of biological oxygen demand (BOD) 5 in mg/1 ranged from 12 – 116.5 mg/l. The mean values for dissolved oxygen (DO) in mg/1 ranged between 1.0 – 8.5 mg/l. Salinity values ranged between 16 - 19081 mg/l. Mean values for conductivity ranged between 44 -14673.5 µs/cm. The chromium concentration (mg/l) ranged between 0.001-0.503, Pb ranged from 1.939-2.577 mg/l, Fe ranged from 0.080- 3.221 mg/l, Cu ranged between 0.057-0.205 mg/l and zinc ranged from 0.230-2.000 mg/l. Some physicochemical characteristics, such as TDS, chemical oxygen demand, and heavy metals; chromium, iron, and copper, were found to be beyond the established limits, posing a risk to the environment.
Pages: 71-77 | Views: 325 | Downloads: 164
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How to cite this article:
Oyibo Ntongha, Obire Omokaro. Physicochemical characteristics including heavy metals of oilfield wastewater from Utorogu oilfield in Delta state. J Res Chem 2021;2(2):71-77.