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Abstract
The prevalent occurrence and use of oil lead to an increasing environmental pollution by petroleum products. Petrochemical-based products penetrate the soil and then indirectly get to water along with the sewage and stormwaters that wash away the surface of streets and roads. The object of this work was to study the removal of oil from water. The study examined the use of test system: aeration–reverse osmosis (RO) in order to remove C7–C35 petroleum compounds from aqueous solutions. Tests were conducted using the model water—distilled water with the addition of diesel oil and gasoline. The effectiveness of the integrated process was evaluated based on the degree of petroleum compounds removal from the water after various stages of the process, and after completion of water purification. Hydraulic performance of the membrane was also investigated. Six test series, starting from 2,997.87 to 96.5 mg/dm3 concentration, were performed. The test water was aerated and then subjected to the RO process. Determination of petroleum hydrocarbons was made using a gas chromatograph according to Polish Norm PN-C-04643 and expressed as mineral oil index.