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Review Article Open Access
Wastewaters arising from oil and gas industries are a source of soil, water and air pollution and lead to a mortal danger to our environment. Elimination of hydrocarbons from oily-water is carried out by chemical methods such as the process of coagulation - flocculation. Our purpose in this work is to contribute to the collective efforts to treat the huge amount of wastewater purges storage bins and reuse them to prevent any ecosystem damage; this was achieved by studying the wastewaters separation effectiveness by coagulation- flocculation using two types of sequestering; citric and ascorbic acid. Chemical treatment investigated in the laboratory of the petroleum field of BERKAOUI /southern Algeria, showed that the best result is obtained by using 2% of ascorbic acid within wastewater solution containing 12 ml of 4% concentration of activated silicates; consequently : - Suspended matter decreased to reach 41 mg/l; with 87.54% of elimination. - Turbidity of treated water reached 22 FTU; with 91.88% of clarification. - Hydrocarbons amount was 3 ppm; with 97.32% of reduction. - COD and BOD5 reductions were 85.81% and 92.77% respectively. Finally, after irrigation tests throughout local dune sand, we suggest using it as biological filter before any chemical treatment for further wastes elimination.
Wastewater, Flocculation, Coagulation, Sequestering,Ascorbic acid, Citric acid, Biomass and Biological Waste Treatment, Chemical Waste Management, E-waste Fly Ash