Title:
|
Biofiltration of WWTP sludge composting emissions at contact times of 2–10 s by structured/unstructured packing materials
|
Author:
|
Dorado Castaño, Antonio David; Gabriel Buguña, David; Gamisans Noguera, Javier
|
Other authors:
|
Universitat Politècnica de Catalunya. Departament d'Enginyeria Minera i Recursos Naturals; Universitat Politècnica de Catalunya. TRAGASOL - Grup de Tractament Biològic de Contaminants Gasosos i Olors |
Abstract:
|
The performance of a biotrickling filter for the abatement of composting emissions was evaluated at short gas contact times of 2–10 s with a structured and an unstructured packing material. The effect of the gas contact time, pH control and water make-up flowrate were also evaluated during 8 months.
The average elimination capacity was 13 g N m-3 h-1 and 3.3 g C m-3 h-1 for NH3 and VOCs, respectively.
Maximum capacities obtained during an inlet concentration spiking experiment were 45 g N m-3 h-1 and 20 g C m-3 h-1 at a removal efficiency of 92.5 and 46.7%, respectively. A decrease of 40% was detected in the nitrification capacity when the hydraulic residence time increased from 2 to 5 h. Thus, water renewal was identified as a critical parameter to avoid substrate inhibition by nitrite and NH3 accumulation.
Results demonstrate that significant NH3 and VOCs removal efficiencies can be achieved for composting emissions in a biotrickling filter operated at short gas contact times, which entails a substantial reduction of operational and investment costs in comparison to traditional techniques. |
Abstract:
|
Peer Reviewed |
Subject(s):
|
-Àrees temàtiques de la UPC::Enginyeria química -Gases -- Purification -Biotrickling filtration -Composting emissions -Packing materials -Short gas contact times -NH3 and volatile organic compounds -Spiking -Gasos -- Depuració |
Rights:
|
http://creativecommons.org/licenses/by-nc-nd/3.0/es/ |
Document type:
|
Article - Submitted version Article |
Share:
|
|