Combination of techniques and actions for the study and resolution of complex odour issues

on .

   In order to establish possible measures to ensure the absence of impact in a population exposed to significant odour episodes it is necessary to undertake odour studies which are sufficiently rigorous, comprehensive and tailored to each individual case as opposed to the mechanical application of routine methods that only provide information that has no practical use for the effective resolution of real cases.

M. Almarcha1,2 *, I. Barrutiabengoa1, M. Puigcercós1, D. Almarcha1, M. Latorre2 y S. Nadal 2
1 Ambiente y Tecnología Consultores S.L., C/Còrsega 112, local 1, 08029-Barcelona
2 Sistemas y Tecnologías Ambientales S.A., C/Còrsega 112, local 1, 08029-Barcelona
* E-mail:

Keywords: odours, fertilizer manufacture, quantitative field olfactometry (Nasal Ranger®), volatile organic compounds (VOC), supplementary atmospheric dispersion, EOLAGE®.

 

Abstract

wind rose odours    In order to establish possible measures to ensure the absence of impact in a population exposed to significant odour episodes it is necessary to undertake odour studies which are sufficiently rigorous, comprehensive and tailored to each individual case as opposed to the mechanical application of routine methods that only provide information that has no practical use for the effective resolution of real cases.

    This paper presents the results of a detailed study of the odour impact of a NPK fertilizer manufacturing plant located in a major conurbation where numerous odor complaints systematically occur, and which may be attributed to different sources. Both olfactometric and chemical speciation techniques have been used in this work in order to characterize the emissions of the plant and also the surrounding ambient air. From the information obtained The actual odor impact of the plant, as well as the detailed composition of the emissions responsible for it, were stipulated from the information that was obtained. Subsequently, an expert evaluation of the actuation alternatives was conducted, and technologies that allowed to ensure reasonable conditions of absence of odour were selected before choosing the most appropriate one. Afterwards, the design, engineering and installation processes of the chosen solution were carried out, took out the project design, engineering and installation of the adopted solution (a supplemental pneumatic propulsion system) were carried out and, finally, its efficacy was experimentally checked. Therefore, the plant is currently already outside of the focus of odour complaints in the area.

 

Robustness analysis of technologies for odour treatment

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A key factor in the selection of the most appropriate technology for odour treatment is the ability of the system to recover from process fluctuations and operational upsets.
R. Lebrero1, B. Kraakman2,3, J.M. Estrada1 y R. Muñoz1
1 University of Valladolid, Chemical Engeneering and Environmental Technology Department. Raúl Muñoz:
2 CH2M HILL Australia
3 Delft University of Technology, Department of Biotechnology

Keywords : Robustness analysis, odour treatment, biofilter, activated sludge system, biotrickling filter, activated carbon adsorption, chemical scrubber

Summary

Robustness analysis biotechnologies
    A key factor in the selection of the most appropriate technology for odour treatment is the ability of the system to recover from process fluctuations and operational upsets. However, the number of studies focused on the robustness of biotechnologies for odour abatement is scarce. The objective of the present study was to perform robustness assays with different bioreactors at laboratory scale treating synthetic mixtures of odorous compounds at trace level concentrations (mg m-3 - µg m-3). The results show the capacity of the biotechnologies to recover from operational failures in short periods of time. Besides, a semi-quantitative study was conducted to compare the robustness of physico-chemical and biological technologies under real operating conditions. The study confirmed the previous results and supports biotechnologies as the optimal solution for odour treatment.

Urban odours: The new challenge

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sesion4 recasens01This article presents the highlights of a study carried out in order to determine the odour impact of a Street Cleaning Station located in the city and surrounded by apartments. Therefore, it shows the selection process of the metholodgy that meets the best the goals of the study, the physical and operational characteristics of the plant, the time available and the Budget.

The results of this study show the need of customising the methodology to each Project, taking into account all the issues that can contribute to odour impact generation. Thanks to this project, the company could convince its neighbours and the Administration that no impact was generated, so the presence of the plant was compatible with the apartments in the building.

 

 

 

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