Resumen del producto

The integrated management of water resources is a requirement for environmental preservation and economic development, with the removal
of nutrients being one of the main drawbacks. In this work, the efciency of a bacterial consortium (Ecobacter WP) made up of eight bacterial strains of the
genus Bacillus subtilis, Bacillus licheniformis, Bacillus megaterium, Bacillus cereus, Arthrobacter sp., Acinetobacter parafneus, Corynebacterium sp.,
and Streptomyces globisporus was evaluated in the removal of nitrogen compounds in domestic wastewater in a plug fow system, in the extended aeration and bioaugmentation (FLAEBI). To promote the nitrifcation and denitrifcation processes, three doses were tested to establish the optimal concentration of the bacterial consortium on a laboratory scale and its subsequent application in an outdoor wastewater treatment plant (WWTP). The evaluation period was 15 days for each treatment in the laboratory and WWTP. The parameters monitored both at laboratory and outdoor were pH, temperature, dissolved oxygen, chemical oxygen demand (COD), biochemical oxygen demand (BOD5), ammonium, nitrites, and nitrates. The results indicated that the optimal concentration of the consortium was 30 mg L−1, with a removal of 92% of nitrate at the laboratory and 62% outdoor. Such a diference is attributed to the diferent operation residence times and the volume that caused diferent concentration gradients. The consortium studied can be used to promote nitrifcation and denitrifcation processes that intervene in the removal of
nitrogenous compounds in plants with similar operating conditions, without investment in restructuring or design modifcation of the WWTP.

Abstract del producto

The integrated management of water resources is a requirement for environmental preservation and economic development, with the removal
of nutrients being one of the main drawbacks. In this work, the efciency of a bacterial consortium (Ecobacter WP) made up of eight bacterial strains of the
genus Bacillus subtilis, Bacillus licheniformis, Bacillus megaterium, Bacillus cereus, Arthrobacter sp., Acinetobacter parafneus, Corynebacterium sp.,
and Streptomyces globisporus was evaluated in the removal of nitrogen compounds in domestic wastewater in a plug fow system, in the extended aeration and bioaugmentation (FLAEBI). To promote the nitrifcation and denitrifcation processes, three doses were tested to establish the optimal concentration of the bacterial consortium on a laboratory scale and its subsequent application in an outdoor wastewater treatment plant (WWTP). The evaluation period was 15 days for each treatment in the laboratory and WWTP. The parameters monitored both at laboratory and outdoor were pH, temperature, dissolved oxygen, chemical oxygen demand (COD), biochemical oxygen demand (BOD5), ammonium, nitrites, and nitrates. The results indicated that the optimal concentration of the consortium was 30 mg L−1, with a removal of 92% of nitrate at the laboratory and 62% outdoor. Such a diference is attributed to the diferent operation residence times and the volume that caused diferent concentration gradients. The consortium studied can be used to promote nitrifcation and denitrifcation processes that intervene in the removal of
nitrogenous compounds in plants with similar operating conditions, without investment in restructuring or design modifcation of the WWTP.

Palabras clave

Bioaugmentation · Nitrogen compounds · Bacterial consortium · Denitrifcation · Nitrifcation · Water resource management