| Title | Air side-stream ammonia stripping in a thin film evaporator coupled to high-solid anaerobic digestion of sewage sludge: Process performance and interactions |
|---|---|
| ID_Doc | 20560 |
| Authors | Di Capua, F; Adani, F; Pirozzi, F; Esposito, G; Giordano, A |
| Title | Air side-stream ammonia stripping in a thin film evaporator coupled to high-solid anaerobic digestion of sewage sludge: Process performance and interactions |
| Year | 2021 |
| Published | |
| Abstract | Air side-stream ammonia stripping in a thin-film evaporator (TFE) is proposed for the first time to control total ammonia nitrogen (TAN) concentration in a centralized full-scale plant performing high-solid anaerobic digestion (HSAD) of sewage sludge (SS). In this process, anaerobically digesting sludge (ADS) is continuously recirculated from the digester to the TFE unit where ammonia is stripped by an air stream. The stripped ammonia reacts with sulfuric acid in an absorption unit to produce ammonium sulfate. Overall, HSAD coupled to air sidestream ammonia stripping results in a twofold production of fertilizers (i.e. ammonium sulfate and SS digestate) recycling nutrients from organic wastes in agreement with the principles of circular economy. This study evaluates the influence of different operational airflow rates, temperatures and CO2 concentrations on air side-stream ammonia stripping in the TFE without alkali addition and the impact of air-based ammonia stripping on HSAD performance at full-scale. The study also investigates the chemistry and the interaction between the ammonia and carbonate subsystems of ADS and clarifies the stoichiometric relationship between ammonia and CO2 stripping. |
Similar Articles
| ID | Score | Article |
|---|---|---|
27212
|
Di Costanzo, N; Cesaro, A; Di Capua, F; Esposito, G Exploiting the Nutrient Potential of Anaerobically Digested Sewage Sludge: A Review(2021)Energies, 14.0, 23 | |
| 14177
|
Wei, W; Zhou, X; Wang, DB; Sun, J; Wang, QL Free ammonia pre-treatment of secondary sludge significantly increases anaerobic methane production(2017) | |
| 20898
|
Collivignarelli, MC; Abbà, A; Bertanza, G; Baldi, M; Setti, M; Frattarola, A; Miino, MC Treatment of high strength wastewater by thermophilic aerobic membrane reactor and possible valorisation of nutrients and organic carbon in its residues(2021) | |
| 5590
|
Dutta, N; Giduthuri, AT; Khan, MU; Garrison, R; Ahring, BK Improved valorization of sewage sludge in the circular economy by anaerobic digestion: Impact of an innovative pretreatment technology(2022) | |
| 19374
|
Brienza, C; Sigurnjak, I; Meier, T; Michels, E; Adani, F; Schoumans, O; Vaneeckhaute, C; Meers, E Techno-economic assessment at full scale of a biogas refinery plant receiving nitrogen rich feedstock and producing renewable energy and biobased fertilisers(2021) | |
| 6129
|
Ferrer, I; Passos, F; Romero, E; Vázquez, F; Font, X Optimising sewage sludge anaerobic digestion for resource recovery in wastewater treatment plants(2024) |