The extraction of underground resources has accelerated globally, in response to the demands of advancing technology and the rapidly growing population. The increase in drilling activities has caused an increase in environmental pollution problems caused by waste generated during drilling activities, namely drilling sludge and drilling wastewater. In this study, the treatability of wastewater generated during drilling operations in a basin, where an underground gas storage area was created, was investigated using an electrocoagulation (EC) process, using different electrode pairs. The removal efficiencies of the pollution parameters were determined using the response surface method. The wastewater parameters included different organic and inorganic pollutants, such as sodium, chloride, magnesium, and chemical oxygen demand (COD). The concentrations of sodium, chloride, and COD in drilling industry wastewater were found to be very high, at 128,567, 185,292, and 7500 mg/L, respectively. The data obtained in this study yielded a removal efficiency of approximately 65% and above. Sodium achieved the highest pollutant removal efficiency of 85% and above. The statistical values were interpreted for all the pollutants and the suitability of second-degree regression was observed.
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Article Synopsis
- Electrocoagulation (EC) is an effective method for treating industrial wastewater due to its simple design, low maintenance costs, and ability to remove multiple contaminants without using harmful chemicals.
- The study focused on using EC in batch mode to treat produced water from oil drilling, utilizing high-performing aluminum electrodes to generate aluminum hydroxide flocs that capture contaminants.
- Results showed significant removal efficiencies for various contaminants, including 90% turbidity and 86% oil & grease, depending on the electrode configuration and operating conditions, highlighting its potential for water reuse.
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