Odour nuisance from solid wastes: development of a model describing emission, dispersion and reception

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dc.contributor.advisor Hobbs, S. E.
dc.contributor.author Sarkar, Ujjaini
dc.date.accessioned 2006-10-05T18:10:44Z
dc.date.available 2006-10-05T18:10:44Z
dc.date.issued 1999-06
dc.identifier.uri http://hdl.handle.net/1826/1204
dc.description.abstract Odours emitted from Municipal Solid Waste (MSW) landfills create nuisance in the surrounding environment. The odour comes from the mixture of volatile organic compounds present in the landfill gas, leachate and leachate treatment systems, sewage sludges and waste materials. The research objective is to develop an Odour Impact Model (OIM) to quantify the impact of odour from a landfill on the surrounding communities. The model provides a basis for site planning and odour regulations. A suitable OIM has been developed with special emphasis on quantifying emissions from the source. A micrometeorological model has been developed based on the estimation of footprints of scalar odour concentration measurements in the atmospheric surface layer. A simple experiment has been designed based on this model. The results of this model have been compared with those from the direct emission measurement approach using a portable Lindvall Hood. Major advantages of the indirect micrometeorological approach are the simplicity of the experiment design, and its ability to cover various spatial resolutions. The commercial software MPTER/COMPLEX-I and UK-ADMS have been used to predict the dispersion of odour around two solid waste sites. UK-ADMS uses a better representation of short-range dispersion (considering plume meandering and in-plume fluctuations) and is thus likely to be more accurate close to the source. The two models compare well at distances greater than 500 metres downwind from the source. The perception recorded in the surrounding community has been analysed with four psychophysical models to validate the impacts predicted by the suitable dispersion model. The model based on Weber-Fechner law describes the relationship between odour intensity and odour concentration (ou/m3) very well for the less intense odour samples, while Laffort’s equation expresses a better relationship with more intense odour samples. The main strength of the integrated OIM is its ability to handle the problem of odour nuisance from solid wastes quantitatively. Amongst the major weakness was poor validation due to lack of sufficient data. Successful use of the OIM will require measurements which account for the extreme variations in surface conditions, cover type, waste composition, wasteage and subsidence. en
dc.format.extent 5962669 bytes
dc.format.mimetype application/pdf
dc.language.iso en
dc.publisher Cranfield University en
dc.rights © Cranfield University, 1999. All rights reserved. No part of this publication may be reproduced without the written permission of the copyright owner en
dc.title Odour nuisance from solid wastes: development of a model describing emission, dispersion and reception en
dc.type Thesis or dissertation en
dc.type.qualificationlevel Doctoral en
dc.type.qualificationname PhD en
dc.publisher.department School of Engineering en

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