| Abstract | Today, several technologies and management strategies are proposed and applied in WWTPs to
minimize sludge production and contamination and their techno-economic feasibility has to be
carefully evaluated. Wet oxidation (WO) process is an alternative solution to conventional
incineration for converting sewage sludge to inert residues. In this work (which is being conducted
within the EU project "ROUTES"), based on bench scale tests results, a mass balance was drawn
for a WWTP (500,000 PE), where it was supposed to install a WO stage for sludge minimization.
The design of treatment units and the estimation of capital and operation costs were then
performed. Subsequently, a procedure for technical-economic assessment (benchmarking) was
developed. Basically, this procedure consists in the definition and ranking of several technical (e.g.
reliability of the technology, complexity and integration with the existing facilities, amount of
residues to be disposed of or recovered,...) and economic aspects. Preliminary results have shown
WO to be a suitable solution for sludge minimization. |
| Text | 209338 2012 benchmarking; costs; mass balance; ROUTES; wet oxidation Sewage Sludge Minimization by means of Wet Oxidation Process Performance and Economic Sustainability Bertanza G., Zanaboni S., Canato M., Laera G., Galessi G. Bertanza G., Department of Civil Engineering, Architecture, Land and Environment, University of Brescia, via Branze 43, I 25123, Brescia, Italy Zanaboni S., Department of Civil Engineering and Architecture, University of Pavia, via Ferrata 3, I 27100, Pavia, Italy Canato M., Department of Civil Engineering, Architecture, Land and Environment, University of Brescia, via Branze 43, I 25123, Brescia, Italy Laera G., Istituto di Ricrca Sulle Acque, Consiglio Nazionale delle Ricerche, Viale F. De Blasio 5, I 70132, Bari, Italy. Galessi G., 3V GREEN EAGLE S.p.A., piazza Liberta 10, I 24121, Bergamo, Italy Today, several technologies and management strategies are proposed and applied in WWTPs to minimize sludge production and contamination and their techno economic feasibility has to be carefully evaluated. Wet oxidation WO process is an alternative solution to conventional incineration for converting sewage sludge to inert residues. In this work which is being conducted within the EU project ROUTES , based on bench scale tests results, a mass balance was drawn for a WWTP 500,000 PE , where it was supposed to install a WO stage for sludge minimization. The design of treatment units and the estimation of capital and operation costs were then performed. Subsequently, a procedure for technical economic assessment benchmarking was developed. Basically, this procedure consists in the definition and ranking of several technical e.g. reliability of the technology, complexity and integration with the existing facilities, amount of residues to be disposed of or recovered,... and economic aspects. Preliminary results have shown WO to be a suitable solution for sludge minimization. 978 975 404 919 0 International Conference on Recycling and Reuse R R 2012 Istanbul Turchia 4 6 giugno 2012 Internazionale Contributo Contributo in atti di convegno giuseppe.laera LAERA GIUSEPPE |
