Scheda di dettaglio – i prodotti della ricerca
| Dato | Valore |
|---|---|
| Title | Holistic Approach to Phosphorus Recovery from Urban Wastewater: Enhanced Biological Removal Combined with Precipitation |
| Abstract | Combined phosphorus (P) removal and recovery from wastewater is a sensible and sustainable choice in view of potential future P-resource scarcity, due to dwindling primary global reserves. P-recovery from wastewater, notwithstanding the relatively small fraction of total global amounts involved (less than 1/5 of total global use ends up in wastewater) could extend the lifespan of available reserves and improve wastewater cycle sustainability. The recovery of the resource, rather than its mere removal as ferric or aluminum salt, will still allow to achieve protection of receiving waters quality, while saving on P-sludge disposal costs. To demonstrate the possibility of such a recovery, a strategy combining enhanced biological phosphorus removal and mineral P-precipitation was studied, by considering possible process modifications of a large treatment facility. Process simulation, a pilot study, and precipitation tests were conducted. The results demonstrated that it would be possible to convert this facility from chemical -precipitation to its biological removal followed by mineral precipitation, with minimal structural intervention. Considerable P-recovery could be obtained, either in form of struvite or, more sustainably, as calcium phosphate, a mineral that also has possible fertilizing applications. The latter would present a cost about one order of magnitude lower than the former. |
| Source | Sustainability 12 (2) |
| Keywords | nutrientsphosphoruswastewaterbio-P processmodelingP-recoveryprecipitationstruvitecalcium sulphate |
| Journal | Sustainability |
| Editor | NBII and CSA,, Reston, VA, Stati Uniti d'America |
| Year | 2020 |
| Type | Articolo in rivista |
| DOI | 10.3390/su12020575 |
| Authors | Tomei, Maria Concetta; Stazi, Valentina; Daneshgar, Saba; Capodaglio, Andrea G. |
| Text | 420477 2020 10.3390/su12020575 ISI Web of Science WOS 000516824600133 nutrients phosphorus wastewater bio P process modeling P recovery precipitation struvite calcium sulphate Holistic Approach to Phosphorus Recovery from Urban Wastewater Enhanced Biological Removal Combined with Precipitation Tomei, Maria Concetta; Stazi, Valentina; Daneshgar, Saba; Capodaglio, Andrea G. CNR; Univ Pavia Combined phosphorus P removal and recovery from wastewater is a sensible and sustainable choice in view of potential future P resource scarcity, due to dwindling primary global reserves. P recovery from wastewater, notwithstanding the relatively small fraction of total global amounts involved less than 1/5 of total global use ends up in wastewater could extend the lifespan of available reserves and improve wastewater cycle sustainability. The recovery of the resource, rather than its mere removal as ferric or aluminum salt, will still allow to achieve protection of receiving waters quality, while saving on P sludge disposal costs. To demonstrate the possibility of such a recovery, a strategy combining enhanced biological phosphorus removal and mineral P precipitation was studied, by considering possible process modifications of a large treatment facility. Process simulation, a pilot study, and precipitation tests were conducted. The results demonstrated that it would be possible to convert this facility from chemical precipitation to its biological removal followed by mineral precipitation, with minimal structural intervention. Considerable P recovery could be obtained, either in form of struvite or, more sustainably, as calcium phosphate, a mineral that also has possible fertilizing applications. The latter would present a cost about one order of magnitude lower than the former. 12 Published version Articolo in rivista NBII and CSA, 1548 7733 Sustainability Sustainability Sustainability mariaconcetta.tomei TOMEI MARIA CONCETTA |