| Title | Tannery Wastewater Treatment by Sequencing Batch Biofilm Reactor |
| Abstract | The paper reports the results of an investigation aimed to evaluate the performances of an innovative process for treating tannery wastewater. In such a process biological degradation, carried out in a sequencing batch biofilm reactor (SBBR), is combined with chemical oxidation by ozone. The treatment was carried out at laboratory scale on a real primary effluent coming from a centralized plant treating the wastewater of a large tannery district in Northern Italy. SBBR performances without and with ozonation were compared with very satisfactory results particularly in the latter instance when the recorded COD, TKN, and TSS average removals, (96%), (92%), and (98%), respectively, permitted to achieve the fixed limits enforced by Italian regulation without needing any additional polishing step. With or without ozonation, the process that resulted was characterized by a specific sludge production (0.1 kgVSS/kgCODremoved) significantly lower than the values featuring conventional biological systems (i.e., 0.3-0.5 VSS/kgCODremoved). Moreover, as in the reactor the biomass density results were very high, i.e., 98 gVSS/Lsludge, it was possible to achieve and maintain biomass concentration as high as 20 gVSS/L |
| Source | Environmental science & technology 37(14), pp. 3199–3205 |
| Keywords | Tannery wastewater treatmentintegrated processesSBBRozonation |
| Journal | Environmental science & technology |
| Editor | American Chemical Society,, Easton, Pa., Stati Uniti d'America |
| Year | 2003 |
| Type | Articolo in rivista |
| DOI | 10.1021/es030002u |
| Authors | DI IACONI C. (1), LOPEZ A. (2), RAMADORI R. (3), PASSINO R. (4) |
| Text | 42058 2003 10.1021/es030002u ISI Web of Science WOS WOS 000184234000023 Tannery wastewater treatment integrated processes SBBR ozonation Tannery Wastewater Treatment by Sequencing Batch Biofilm Reactor DI IACONI C. 1 , LOPEZ A. 2 , RAMADORI R. 3 , PASSINO R. 4 CNR Istituto di Ricerca sulle Acque The paper reports the results of an investigation aimed to evaluate the performances of an innovative process for treating tannery wastewater. In such a process biological degradation, carried out in a sequencing batch biofilm reactor SBBR , is combined with chemical oxidation by ozone. The treatment was carried out at laboratory scale on a real primary effluent coming from a centralized plant treating the wastewater of a large tannery district in Northern Italy. SBBR performances without and with ozonation were compared with very satisfactory results particularly in the latter instance when the recorded COD, TKN, and TSS average removals, 96% , 92% , and 98% , respectively, permitted to achieve the fixed limits enforced by Italian regulation without needing any additional polishing step. With or without ozonation, the process that resulted was characterized by a specific sludge production 0.1 kgVSS/kgCODremoved significantly lower than the values featuring conventional biological systems i.e., 0.3 0.5 VSS/kgCODremoved . Moreover, as in the reactor the biomass density results were very high, i.e., 98 gVSS/Lsludge, it was possible to achieve and maintain biomass concentration as high as 20 gVSS/L 37 14 Articolo pubblicato Di_Iaconi_et_al_Environmental_Science_and_Technology_2003.pdf Articolo in rivista American Chemical Society, 0013 936X Environmental science technology Environmental science technology Environ. sci. technol. Environmental science technology. ES T Environmental science and technology PASSINO ROBERTO claudio.diiaconi DI IACONI CLAUDIO antonio.lopez LOPEZ ANTONIO roberto.ramadori RAMADORI ROBERTO |
