Study on the Effectiveness of the Sequential Batch Reactor on the Reduction of Wastewater Pollution by Vegetable Oils from Oil Refining
摘要
Industrial wastewater commonly contains a lot of pollutants, which contributes to eutrophication in aquatic systems. To improve the treatment of vegetable oil refining wastewater, we investigated the potential of a biological treatment, precisely an aerobic-anoxic sequencing batch reactor system. The reactors were operated on a 24-h cycle, consisting of 20 min for filling, 17 h for aeration, 4 h for anoxic conditions, 2 h for settling, 20 min for draw, and 20 min of idle time. Results showed removal efficiencies of 83%, 94%, 80%, 93%, 96%, and 91% for COD, BOD5, turbidity, nitrate, ammonium, and phosphate, respectively. Despite its complexity, the SBR biological reactor is considered a promising solution for industrial wastewater treatment. The O/A-SBR system is an effective treatment process for the vegetable oil refining industry.