RT journal article
T1 Incorporating the Oxic-Settling-Anaerobic (OSA) Process into an Anoxic–Oxic System for Sewage Sludge Reduction and Nutrient Removal
A1 Romero Pareja, Pablo Mª
A1 Aragón Cruz, Carlos Alberto
A1 Quiroga Alonso, José María
A1 Coello Oviedo, María Dolores
A2 Tecnologías del Medio Ambiente
K1 sewage sludge
K1 OSA process
K1 biological nutrient removal
AB The production of sludge in biological wastewater treatmentsis a growing problem worldwide as it entails economic,environmental, and health problems. The oxicsettling-anaerobic (OSA) process is one of the techniquesthat have been developed to reduce the sludge produced inthe activated sludge process (ASP). This article reports thefeasibility of the application of the OSA process in a nutrientremoval system, specifically, in an anoxic–oxic (A) process.The results reveal TN removal in the A1OSA system of68.84% and 69.91% (for 7 and 11 h of sludge anaerobicexposure time, SAET, respectively) versus 38.02% and 32.47%in the OSA system with similar SAET. The percentage sludgereductions obtained were, respectively, 22.41% and 31.93%in the OSA system and 23.53% and 32.49% in the A1OSAsystem compared to the sludge produced in the conventionalASP. The study confirms the suitability of the application ofthe OSA process in a nutrient removal system, as nutrientremoval performances are not affected, while at the sametime achieving higher sludge reduction
SN 1944-7442
YR 2018
FD 2018
LK http://hdl.handle.net/10498/30235
UL http://hdl.handle.net/10498/30235
LA eng
DS Repositorio Institucional de la Universidad de Cádiz
RD 21-sep-2026