Use of chemometrics methods and multicriteria decision-making for site selection for sustainable on-site sewage effluent disposal

Al-Shiekh Khalil, Wael, Goonetilleke, Ashantha, Kokot, Serge, & Carroll, Steven P. (2004) Use of chemometrics methods and multicriteria decision-making for site selection for sustainable on-site sewage effluent disposal. Analytica Chimica Acta, 506(1), pp. 41-56.

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This paper presents a study undertaken to evaluate site suitability for sewage effluent renovation based on physico-chemical characteristics of the soil. The results obtained showed that as the soil becomes acidic, the phosphorus concentration in the soil reduces accordingly. The chloride ion concentration was found to be a reliable indicator for evaluating the soil capacity to remove nitrogen. A high cation exchange capacity (CEC) can enhance the renovation of sewage effluent. Soils with high quartz content had a low CEC with high organic matter content (OM) being able to compensate. Therefore, an understanding of the micro-nutrients in the soil, organic matter content and chloride ion concentration are important.

To facilitate a multi-variate approach for site selection, multicriteria decision-making methods (MCDM) methods, PROMETHEE and GAIA, were applied for analysis of a sequence of three matrices consisting of 8, 16, and 48 soil site objects respectively, and seven soil property parameters. Matrix models and the interpretation of results are discussed in detail. From these analyses, PROMETHEE II net outranking flows,↑, found that two sites were always among the top three ranks of the three matrix models, which suggested that they were the most suitable for sewage effluent renovation. The criteria CEC and OM, were particularly important for the selection of these better sites, but pH and Cl- attributes discriminated the weaker performing sites from the better ones; as well the PO43- and the NH3-N criteria were in general opposition to CEC, OM, pH and Cl- but were much less effective as discriminators. Consideration of net outranking flows suggested an approach method for the selection of other possibly suitable sites for sewage effluent renovation.

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50 citations in Scopus
37 citations in Web of Science®
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ID Code: 4019
Item Type: Journal Article
Refereed: Yes
Keywords: chemometrics methods, land capability, PROMETHEE and GAIA, sewage effluent disposal, subsurface effluent disposal
DOI: 10.1016/j.aca.2003.11.003
ISSN: 0003-2670
Subjects: Australian and New Zealand Standard Research Classification > CHEMICAL SCIENCE (030000) > ANALYTICAL CHEMISTRY (030100) > Quality Assurance Chemometrics Traceability and Metrological Chemistry (030106)
Australian and New Zealand Standard Research Classification > ENGINEERING (090000) > CIVIL ENGINEERING (090500) > Water Quality Engineering (090508)
Australian and New Zealand Standard Research Classification > ENGINEERING (090000) > ENVIRONMENTAL ENGINEERING (090700) > Environmental Engineering Modelling (090702)
Divisions: Past > QUT Faculties & Divisions > Faculty of Built Environment and Engineering
Copyright Owner: Copyright 2004 Elsevier
Copyright Statement: Reproduced in accordance with the copyright policy of the publisher.
Deposited On: 03 May 2006 00:00
Last Modified: 29 Feb 2012 13:02

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