Sustainability and Robustness Assessment of Odor Control Technology at Water Treatment Plants
Abstract:Technologies for odor control have been widely reviewed and their optimal range of application and performance has been clearly established. Selection criteria, mainly driven by process economics, are usually based on the air flow volume, the inlet concentrations and the required removal efficiency. However, these criteria are shifting with social and environmental issues becoming as important as process economics.
Odor abatement systems are designed for long term operation, preferably with minimum operator involvement and without any failures. This means that the operational risk is critical, because operational experience shows that when a technology is not critical for the main objectives of a facility (e.g. purify wastewater, production of a product, etc.) a lower priority is often given in terms of operator and maintenance attention.
This paper presents results from several studies to quantify Sustainability and Robustness of odor control technology in the context of odor control at wastewater treatment or water recycling plants. The most commonly used odor abatement techniques (biofiltration, biotrickling filtration, activated carbon adsorption, chemical scrubbing, activated sludge diffusion and biotrickling filtration coupled with activated carbon adsorption) are evaluated in terms of:
1. Sustainability, with quantification of process economics, environmental performance and social impact using the IChemE Sustainability Metrics.
2. Sensitivity towards design and operating parameters like utility prices (energy and labor), inlet odor concentration (H2S) and design safety (EBRT).
3. Robustness, quantifications of operating reliability, with recommendations to improve reliability during its lifespan of operations.
Document Type: Research Article
Publication date: 2012-01-01
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