Home // ICNS 2021, The Seventeenth International Conference on Networking and Services // View article
Authors:
Barbara Stefanutti
Celia Cano
Jose Plaza
Lorena Parra
Pedro V. Mauri
Keywords: Typha domingensis; spatial variability; anaerobic conditions; wastewater; crops
Abstract:
Water regeneration is a top priority to achieve sustainability. Different alternatives to the traditional wastewater treatments that combine nitrification-anammox-denitrification are becoming popular in the last few years. These systems combine bacteria and plants to remove the organic matter and generate harvestable biomass. Despite the importance of oxygen concentration for the degradation of organic matter, no studies analyse the variation of dissolved oxygen in those systems. In this paper, we are going to evaluate the temporal and spatial variability of dissolved oxygen in the ponds of a phytodepuration system composed of Typha domingensis to identify if the bottom of the ponds is in anaerobic/anoxic conditions or not. Thus, the concentration of dissolved oxygen in 6 points and at 4 depth are measured during 2 months. Our results indicate that there is a high temporal variability of dissolved oxygen, caused mainly by the entrance of water into the system. The variability was much lower in the bottom of the third (and last) tank. The spatial distribution of the oxygen in normal conditions follows a gradient, having the highest concentration (0.5 mg/L) on the surface of the first pond and the lower concentration at the bottom of the second and third ponds (≈0.1 mg/L). Finally, we relate the system's performance with the produced biomass, 1.8 kg/m2, and the reduction of total dissolved solids, 80%.
Pages: 7 to 12
Copyright: Copyright (c) IARIA, 2021
Publication date: May 30, 2021
Published in: conference
ISSN: 2308-4006
ISBN: 978-1-61208-853-2
Location: Valencia, Spain
Dates: from May 30, 2021 to June 3, 2021