Abstract
This study assesses the seasonal variations of volatile organic compounds (VOCs) in raw and treated wastewater from one of the largest treatment plants in Kuwait. Samples from the influent and effluent of the treatment plant were collected weekly and analyzed for toluene, benzene, xylene, 1, 3, 5 trimethylbenzene, 1, 4 dichlorobenzene, dichloromethane, chloroform, and tetrachloroethene. The results showed that the median concentrations of all VOCs measured in raw wastewater were higher during the winter season than during the summer season. The concentrations of VOCs during winter were higher by 4 to 5 times than in the summer season. However, there was no significant difference between winter and summer concentrations of all the VOCs in treated wastewater. A significant difference in Dichloromethane and Toluene removal efficiencies was noticed between the summer and winter seasons, as higher removal efficiency was achieved in summer.
Published Version
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