%0 Journal Article
%T Biorreator 角 membrana em batelada sequencial aplicado ao tratamento de esgoto visando 角 remo  o de nutrientes Membrane sequencing batch reactor for the wastewater treatment aiming the nutrients removal
%A Tiago Jos谷 Belli
%A Pauline Aparecida Pera do Amaral
%A Maria Angeles Lobo Recio
%A Carlos Magno de Sousa Vidal
%J Engenharia Sanitaria e Ambiental
%D 2012
%I Brazilian Association of Sanitary and Environmental Engineering
%X Neste trabalho, avaliou-se o desempenho de um biorreator 角 membrana em batelada sequencial para a remo  o de nutrientes (nitrog那nio e f車sforo) de esgoto sanit芍rio. O reator, constru赤do em escala piloto, foi operado durante 241 dias com tempo total de ciclo de 4 horas, sendo 5 minutos para alimenta  o, 55 minutos para a fase an車xica e 180 minutos para as fases de aera  o e filtra  o (simultaneamente). Ao longo do monitoramento, foram empregados dois fluxos de filtra  o: 5,55 e 11,1 L.m-2.h-1, que resultaram nas taxas de troca volum谷trica de 5 e 10%, respectivamente. As efici那ncias m谷dias de remo  o de Demanda Qu赤mica de Oxig那nio total, nitrog那nio amoniacal e nitrog那nio total alcan adas foram de 99, 98 e 96%, respectivamente. Em rela  o 角 remo  o de f車sforo, observou-se inicialmente um baixo rendimento do reator, sendo verificado ao longo do tempo, no entanto, uma tend那ncia de melhora na remo  o desse nutriente, atingindo efici那ncia m谷dia de 74% entre os dias 158 e 241. A utiliza  o do fluxo de filtra  o de 5,55 L.m-2.h-1 proporcionou uma opera  o est芍vel ao biorreator 角 membrana em batelada sequencial no que se refere 角 press o transmembrana, tendo sido atingido o valor limite de 0,7 bar apenas uma vez em 181 dias de opera  o, ao passo que, com fluxo de 11,1 L.m-2.h-1, esse limite foi atingido 3 vezes em 55 dias. This study evaluated the performance of a membrane bioreactor sequencing batch, in pilot scale, to remove nutrients (nitrogen and phosphorus) from domestic wastewater. The reactor was operated for 241 days with a total cycle time of 4 hours, with 5 minutes for feeding, 55 minutes for the anoxic phase and 180 minutes for the aeration and filtration phases (simultaneously). Throughout the monitoring, two filtration flows were employed: 5.5 and 11.1 (critical flux) L.m-2.h-1, which resulted in the volume exchange rates of 5 and 10%, respectively. The removal efficiencies of total Chemical Oxygen Demand, ammonia nitrogen and total nitrogen were achieved by 99, 98 and 96%, respectively. Regarding phosphorus removal, a poor performance was observed in the beginning of the experiment; however, a tendency of improvement in the removal of this nutrient was further verified, reaching an efficiency average of 74% between the operational days 158 and 241. The flux filtration at 5.55 L.m-2.h-1 has provided a membrane bioreactor sequencing batch stable operation in relation to transmembrane pressure since it reached the limit value of 0.7 bar only once in 181 operational days, while for 11.1 L.m-2.h-1 it was observed 3 times in 55 days.
%K biorreator 角 membrana em batelada sequencial
%K remo  o de nutrientes
%K tratamento de esgoto
%K membrane sequencing batch bioreactor
%K nutrients removal
%K wastewater treatment
%U http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-41522012000200003