| Title | Enhanced Versus Conventional Sludge Anaerobic Processes: Performances and Techno-Economic Assessment |
| Abstract | Sewage sludge processing is a key issue in water resource recovery facilities due to the inefficacy of conventional treatments to produce high quality biosolids to be safely used in agriculture. Under this framework, the performances of several enhanced stabilization processes, namely ultrasound-pretreated Mesophilic Anaerobic Digestion (US+MAD), thermophilic anaerobic digestion (TAD), thermal-pretreated TAD (TH+TAD) and ultrasound-pretreated inverse Temperature Phased Anaerobic Digestion (US+iTPAD) have been investigated. Such enhanced processes resulted in higher biogas yields and higher destruction of pathogens with respect to conventional MAD process, thus suggesting their feasibility in full-scale implementation perspectives. A procedure for technical-economic comparison of new sludge processing lines against conventional ones (benchmarking) was developed, based on the definition of technical issues (e.g. reliability, complexity, etc.) which are rated for each situation. Moreover, capital and operating costs were estimated. The enhanced processes analyzed in this work showed some potentially critical items, mainly related to energy balance and reagent consumption. |
| Source | Water environment research 88 (5), pp. 468–478 |
| Keywords | waste activated sludgethermal pretreatmenttemperature-phased digestionpathogenscoststechnical issuestechno-economic assessmentdecision support system. |
| Journal | Water environment research |
| Editor | Water Environment Federation,, Alexandria, VA, Stati Uniti d'America |
| Year | 2016 |
| Type | Articolo in rivista |
| DOI | 10.2175/106143016X14504669768534 |
| Authors | Gianico, A., Bertanza, G., Braguglia C.M., Canato, M., Gallipoli, A., Laera, G., Levantesi, C., Mininni, G. |
| Text | 354920 2016 10.2175/106143016X14504669768534 waste activated sludge thermal pretreatment temperature phased digestion pathogens costs technical issues techno economic assessment decision support system. Enhanced Versus Conventional Sludge Anaerobic Processes Performances and Techno Economic Assessment Gianico, A., Bertanza, G., Braguglia C.M., Canato, M., Gallipoli, A., Laera, G., Levantesi, C., Mininni, G. IRSA CNR, Universita di Brescia Sewage sludge processing is a key issue in water resource recovery facilities due to the inefficacy of conventional treatments to produce high quality biosolids to be safely used in agriculture. Under this framework, the performances of several enhanced stabilization processes, namely ultrasound pretreated Mesophilic Anaerobic Digestion US MAD , thermophilic anaerobic digestion TAD , thermal pretreated TAD TH TAD and ultrasound pretreated inverse Temperature Phased Anaerobic Digestion US iTPAD have been investigated. Such enhanced processes resulted in higher biogas yields and higher destruction of pathogens with respect to conventional MAD process, thus suggesting their feasibility in full scale implementation perspectives. A procedure for technical economic comparison of new sludge processing lines against conventional ones benchmarking was developed, based on the definition of technical issues e.g. reliability, complexity, etc. which are rated for each situation. Moreover, capital and operating costs were estimated. The enhanced processes analyzed in this work showed some potentially critical items, mainly related to energy balance and reagent consumption. 88 Published version Articolo in rivista Water Environment Federation, 1061 4303 Water environment research Water environment research Water environ. res. Water environment research JWPCA WAERED Water environment research JWPCA Water environment research WAERED giuseppe.laera LAERA GIUSEPPE caterina.levantesi LEVANTESI CATERINA camillamaria.braguglia BRAGUGLIA CAMILLA MARIA giuseppe.mininni MININNI GIUSEPPE andrea.gianico GIANICO ANDREA agata.gallipoli GALLIPOLI AGATA |
