Decision support in disinfection technologies for treated wastewater reuse

Gómez-López, María Dolores; Bayo, Javier; García-Cáscales, M. Socorro; Angosto, José M.

doi:10.1016/j.jclepro.2009.06.008

Cited by 108 publications

(40 citation statements)

References 29 publications

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“…Chlorine is the most commonly used disinfectant (47). Alternative processes such as ozonation and UV irradiation are currently used for disinfection in many countries (13,21,25,29) or are under extensive review.…”

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confidence: 99%

Pathogenic Escherichia coli Found in Sewage Treatment Plants and Environmental Waters

Anastasi

Matthews

Stratton

et al. 2012

Appl Environ Microbiol

113

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cWe previously demonstrated that some Escherichia coli strains with uropathogenic properties survived treatment stages of sewage treatment plants (STPs), suggesting that they may be released into the environment. We investigated the presence of such strains in the surrounding environmental waters of four STPs from which these persistent strains were isolated. In all, 264 E. coli isolates were collected from 129 receiving water sites in a 20-km radius surrounding STPs. We also included 93 E. coli strains collected from 18 animal species for comparison. Isolates were typed using a high-resolution biochemical fingerprinting method (the PhPlate system), and grouped into common (C) types. One hundred forty-seven (56%) environmental isolates were identical to strains found in STPs' final effluents. Of these, 140 (95%) carried virulence genes (VGs) associated with intestinal pathogenic E. coli (IPEC) or uropathogenic E. coli (UPEC) and were found in a variety of sites within areas sampled. Of the remaining 117 environmental strains not identical to STP strains, 105 belonged to 18 C types and 102 of them carried VGs found among IPEC or UPEC strains. These strains belonged mainly to phylogenetic groups A (A0 and A1) and B1 and to a lesser extent B2 2 , B2 3 , D1, and D2. Eight of 18 environmental C types, comprising 50 isolates, were also identical to bird strains. The presence of a high percentage of environmental E. coli in waters near STPs carrying VGs associated with IPEC and UPEC suggests that they may have derived from STP effluents and other nonpoint sources.

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confidence: 99%

Pathogenic Escherichia coli Found in Sewage Treatment Plants and Environmental Waters

Anastasi

Matthews

Stratton

et al. 2012

Appl Environ Microbiol

113

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“…The study considered several criteria encompassing technical, economic and environmental for the purpose of evaluation. Gomez-Lopez et al (2009) used the TOPSIS technique select the best WWT technology for disinfection of treated wastewater. Garrido-Baserba et al (2010) developed a complex decision support system (DSS) based on knowledge base for selecting WWT alternative considering 88 factors.…”

Section: Literature Reviewmentioning

confidence: 99%

A hybrid life cycle assessment based fuzzy multi-criteria decision making approach for evaluation and selection of an appropriate municipal wastewater treatment technology

Kamble

Singh

Kharat

2017

Euro-Mediterr J Environ Integr

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Multiple-criteria decision-making (MCDM) has become a main area of research for dealing with complex environmental decision-making problems. In this paper, a hybrid life cycle assessment (LCA) based fuzzy MCDM methodology is developed for the evaluation and selection of appropriate municipal wastewater treatment (WTT) technology based on expert opinion and questionnaires. Further, the study also aims to identify the key evaluation criteria in the process of selecting WTT from a sustainability perspective. The use of fuzzy MCDM in wastewater management has the advantage of rendering subjective and implicit decision-making more objective and analytical, with its ability to accommodate both qualitative and quantitative data. This study provides a systematic approach towards WWT technology selection, in which four-phase procedure is proposed. First, the appropriate technology evaluation and selection criteria were derived from the literature, LCA and experts' opinion. Next, in the second stage, the fuzzy Delphi method was used to evaluate and screen the critical factors for the evaluation of technology alternatives by interviewing the experts. Twelve criteria including sustainability and those derived from LCA and life cycle costing were obtained consisting of both qualitative and quantitative criteria. In the third stage, the weights of the selection criteria as the measurable indices of the WWT technologies were determined by fuzzy pairwise comparison matrices of analytic hierarchy process. Finally, the fuzzy the technique for order of preference by similarity to ideal solution technique was used for ranking the alternatives. The six most commonly used WWT technologies, viz. sequencing batch reactors (SBR), membrane bioreactor (MBR), moving bed bio-film reactor (MBBR), soil biotechnology, facultative aerated lagoon and activated sludge process were evaluated. The present study is the first study of its kind to develop a hybrid LCA-based fuzzy MCDM methodology for the selection of best WWT alternatives. Results illustrated that advanced technologies, MBR, SBR and MBBR are the preferred options with MBR the most preferred one followed by SBR and MBBR. The developed technology assessment framework enables decision makers to understand the complete evaluation and selection process better and provide a more accurate, effective, and systematic decision support framework. The framework is superior to existing methods since it has the capability of representing vague qualitative data and presenting all possible results with different degrees of membership. The framework developed and applied in this work will help identify appropriate WWT technologies for various decision-making situations faced while managing wastewaters.

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“…Among the actions in response to these demands, the WFD encourages Member States to direct their efforts towards wastewater reuse [3]. Wastewater reuse is becoming particularly important in those zones where the water resource is quantitatively and qualitatively scarce [4,5]. On the other hand, the WFD also provides the bases to achieve a sustainable use of water for the long term, taking into account environmental, economic and social considerations [6].…”

Section: Introductionmentioning

confidence: 99%

Selecting a Sustainable Disinfection Technique for Wastewater Reuse Projects

Curiel-Esparza

Cuenca-Ruiz

Martin-Utrillas

et al. 2014

Water

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This paper presents an application of the Analytical Hierarchy Process (AHP) by integrating a Delphi process for selecting the best sustainable disinfection technique for wastewater reuse projects. The proposed methodology provides project managers a tool to evaluate problems with multiple criteria and multiple alternatives which involve non-commeasurable decision criteria, with expert opinions playing a major role in the selection of these treatment technologies. Five disinfection techniques for wastewater reuse have been evaluated for each of the nine criteria weighted according to the opinions of consulted experts. Finally, the VIKOR method has been applied to determine a compromise solution, and to establish the stability of the results. Therefore, the expert system proposed to select the optimal disinfection alternative is a hybrid method combining the AHP with the Delphi method and the VIKOR technique, which is shown to be appropriate in realistic scenarios where multiple stakeholders are involved in the selection of a sustainable disinfection technique for wastewater reuse projects.

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Decision support in disinfection technologies for treated wastewater reuse

Cited by 108 publications

References 29 publications

Pathogenic Escherichia coli Found in Sewage Treatment Plants and Environmental Waters

Pathogenic Escherichia coli Found in Sewage Treatment Plants and Environmental Waters

A hybrid life cycle assessment based fuzzy multi-criteria decision making approach for evaluation and selection of an appropriate municipal wastewater treatment technology

Selecting a Sustainable Disinfection Technique for Wastewater Reuse Projects

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