Scheda di dettaglio – i prodotti della ricerca
| Dato | Valore |
|---|---|
| Title | A CHEMICALLY ENHANCED BIOLOGICAL PROCESS FOR LOWERING OPERATIVE COSTS AND SOLID RESIDUES OF INDUSTRIAL RECALCITRANT WASTEWATER TREATMENT |
| Abstract | An innovative process based on ozone-enhanced biological degradation, carried out in an aerobic granular biomass system (SBBGR e Sequencing Batch Biofilter Granular Reactor), was tested at pilot scale for tannery wastewater treatment chosen as representative of industrial recalcitrant wastewater. The results have shown that the process was able to meet the current discharge limits when the biologically treated wastewater was recirculated through an adjacent reactor where a specific ozone dose of 120 mg O3/Linfluent was used. The benefits produced by using ozone were appreciable even visually since the final effluent of the process looked like tap water. In comparison with the conventional treatment, the proposed process was able to reduce the sludge production by 25e30 times and to save 60% of operating costs. Molecular in situ detection methods were employed in combination with the traditional measurements (oxygen uptake rate, total protein content, extracellular polymeric substances and hydrophobicity) to evaluate microbial activity and composition, and the structure of the biomass. A stable presence of active bacterial populations was observed in the biomass with the simultaneous occurrence of distinctive functional microbial groups involved in carbon, nitrogen and sulphate removal under different reaction environments established within the large microbial aggregates. The structure and activity of the biomass were not affected by the use of ozone. |
| Source | Water research (Oxf.) 44, pp. 3635–3644 |
| Keywords | Tannery wastewaterOzoneBiological degradationBiomass characterisationOperative costs |
| Journal | Water research (Oxf.) |
| Editor | Pergamon Press., New York, Regno Unito |
| Year | 2010 |
| Type | Articolo in rivista |
| DOI | 10.1016/j.watres.2010.04.017 |
| Authors | DI IACONI C., DEL MORO G., DE SANCTIS M., ROSSETTI S. |
| Text | 42375 2010 10.1016/j.watres.2010.04.017 ISI Web of Science WOS 000279382500010 Tannery wastewater Ozone Biological degradation Biomass characterisation Operative costs A CHEMICALLY ENHANCED BIOLOGICAL PROCESS FOR LOWERING OPERATIVE COSTS AND SOLID RESIDUES OF INDUSTRIAL RECALCITRANT WASTEWATER TREATMENT DI IACONI C., DEL MORO G., DE SANCTIS M., ROSSETTI S. Istituto di Ricerca Sulle Acque C.N.R., Via F. De Blasio 5 e 70123 Bari Istituto di Ricerca Sulle Acque C.N.R., Via Salaria Km 29,300 e 00016 Monterotondo An innovative process based on ozone enhanced biological degradation, carried out in an aerobic granular biomass system SBBGR e Sequencing Batch Biofilter Granular Reactor , was tested at pilot scale for tannery wastewater treatment chosen as representative of industrial recalcitrant wastewater. The results have shown that the process was able to meet the current discharge limits when the biologically treated wastewater was recirculated through an adjacent reactor where a specific ozone dose of 120 mg O3/Linfluent was used. The benefits produced by using ozone were appreciable even visually since the final effluent of the process looked like tap water. In comparison with the conventional treatment, the proposed process was able to reduce the sludge production by 25e30 times and to save 60% of operating costs. Molecular in situ detection methods were employed in combination with the traditional measurements oxygen uptake rate, total protein content, extracellular polymeric substances and hydrophobicity to evaluate microbial activity and composition, and the structure of the biomass. A stable presence of active bacterial populations was observed in the biomass with the simultaneous occurrence of distinctive functional microbial groups involved in carbon, nitrogen and sulphate removal under different reaction environments established within the large microbial aggregates. The structure and activity of the biomass were not affected by the use of ozone. 44 Articolo pubblicato WR7969.pdf Articolo in rivista Pergamon Press. 0043 1354 Water research Oxf. Water research Oxf. Water res. Oxf. Water research. Oxf. guido.delmoro DEL MORO GUIDO simona.rossetti ROSSETTI SIMONA claudio.diiaconi DI IACONI CLAUDIO marco.desanctis DE SANCTIS MARCO TA.P07.001.001 Sviluppo di tecnologie depurative a regime non stazionario |