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. 2014 May 1:137:86-92.
doi: 10.1016/j.jenvman.2014.02.002. Epub 2014 Mar 4.

How can sludge dewatering devices be assessed? Development of a new DSS and its application to real case studies

Giorgio Bertanza  1 , Matteo Papa  2 , Matteo Canato  3 , Maria Cristina Collivignarelli  3 , Roberta Pedrazzani  4
Affiliations

How can sludge dewatering devices be assessed? Development of a new DSS and its application to real case studies

Giorgio Bertanza et al. J Environ Manage. .

Abstract

A key issue in biological Waste Water Treatment Plants (WWTPs) operation is represented by the sludge management. Mechanical dewatering is a crucial stage for sludge volume reduction; though, being a costly operation, its optimization is required. We developed an original experimental methodology to evaluate the technical (dewatering efficiency) and financial (total treatment costs) performance of dewatering devices, which might be used as a DSS (Decision Support System) for WWTP managers. This tool was then applied to two real case studies for comparing, respectively, three industrial size centrifuges, and two different operation modes of the same machine (fixed installation vs. outsourcing service). In both the cases, the best option was identified, based jointly on economic and (site-specific) technical evaluations.

Keywords: Cost; Decision support systems; Performance; Sewage sludge dewatering; Wastewater.

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