ELIMINACIÓN DE TRIAZINAS Y ORGANOCLORADOS POR COMBINACIÓN DE BIORREACTOR DE MEMBRANA Y POST-TRATAMIENTOS

Abstract

The availability of water in the world, every day is more complex, being one of the main causes, the pollution. Find procedures for the removal, of those compounds potentially dangerous, known as polluting emerging (CEs), constitute objective researches at the present. This paper studies the effectiveness of the membrane bioreactor (MBR) in the elimination of those CEs and the utility of post-treatments such as: nanofiltration (NF), osmosis reverse (OI), ozonation (O3) for those compounds persistent to the MBR. The analysis was conducted on water, equivalent to residual urban, with the addition of 10 ppb of: α-endosulfan, alachlor, atrazine, β-endosulfan, dieldrin, isodrin, op-DDD, pp-DDD, terbutilazina and trifluralin. The MBR, at low load organic, showed operating and analytical results excellent and a percentage of elimination, of more than 93% for all pollutants, with the exception of atrazine and terbutilazina, which did not exceed the 64,3% and 75,3%, respectively. In those cases, post-treatments for MBR effluent, allowed to raise efficiency, achieving percentages of more than 94% for both compounds. This indicates that the combination of biological methods with post treatments, such as filtration membrane and advanced oxidation processes are good alternatives to achieve greater efficiency, in the elimination of CEs.