Scheda di dettaglio – i prodotti della ricerca
| Dato | Valore |
|---|---|
| Title | MUNICIPAL WASTEWATER TREATMENT BY PERIODIC BIOFILTER WITHOUT EXCESS SLUDGE PRODUCTION |
| Abstract | The paper reports the results of an investigation aimed at evaluating the performances of a periodic biofilter (SBBR) for treating municipal wastewater. The investigation was carried out at laboratory scale on real primary effluent coming from a municipal wastewater treatment plant located in Southern Italy. The SBBR was designed for carbon and nitrogen removal through one single stage. The results have shown that even at maximum organic load (i.e., 7 kg COD/m(3).d), the COD in the effluent was lower than 60 mg/L. TKN removal efficiencies resulted high (i.e. 90-95%) up to an organic load of 5.7 kg COD/m(3).d corresponding to a nitrogen load of 0.8 kg TKN/m(3).d. NO3-N concentration in the treated effluent was lesser than 6 mg/L although in the SBBR treatment cycle no anoxic phase was scheduled. This indicated that denitrification extensively took place in the biofilter. The process was characterized by high suspended solids removal (about 90%) and by a negligible sludge production (lower than 0.01 kgVSS/kgCOD(removed)). In the SBBR, biomass grew as granules and was characterised by different measurements (biomass concentration, cellular protein and biomass density). Biomass density resulted very high, i.e. 200 gTSS/L-biomass, and this permitted to achieve a biomass concentration such high as 40 gTSS/L-bed. Such biomass concentration did not cause any decrease of biomass metabolic activity as proved by its total protein content (29% of organic matter) and maximum oxygen uptake rate value (i.e. 50 mgO2/gVSS h). |
| Source | Annali di chimica (Testo stamp.) 95(6), pp. 447–455 |
| Journal | Annali di chimica (Testo stamp.) |
| Editor | Societa chimica italiana, Roma, Italia |
| Year | 2005 |
| Type | Articolo in rivista |
| DOI | 10.1002/adic.200590051 |
| Authors | DI IACONI C., RAMADORI R., LOPEZ A., PASSINO R. |
| Text | 42169 2005 10.1002/adic.200590051 ISI Web of Science WOS WOS 000231235300009 MUNICIPAL WASTEWATER TREATMENT BY PERIODIC BIOFILTER WITHOUT EXCESS SLUDGE PRODUCTION DI IACONI C., RAMADORI R., LOPEZ A., PASSINO R. CNR Istituto di Ricerca sulle Acque The paper reports the results of an investigation aimed at evaluating the performances of a periodic biofilter SBBR for treating municipal wastewater. The investigation was carried out at laboratory scale on real primary effluent coming from a municipal wastewater treatment plant located in Southern Italy. The SBBR was designed for carbon and nitrogen removal through one single stage. The results have shown that even at maximum organic load i.e., 7 kg COD/m 3 .d , the COD in the effluent was lower than 60 mg/L. TKN removal efficiencies resulted high i.e. 90 95% up to an organic load of 5.7 kg COD/m 3 .d corresponding to a nitrogen load of 0.8 kg TKN/m 3 .d. NO3 N concentration in the treated effluent was lesser than 6 mg/L although in the SBBR treatment cycle no anoxic phase was scheduled. This indicated that denitrification extensively took place in the biofilter. The process was characterized by high suspended solids removal about 90% and by a negligible sludge production lower than 0.01 kgVSS/kgCOD removed . In the SBBR, biomass grew as granules and was characterised by different measurements biomass concentration, cellular protein and biomass density . Biomass density resulted very high, i.e. 200 gTSS/L biomass, and this permitted to achieve a biomass concentration such high as 40 gTSS/L bed. Such biomass concentration did not cause any decrease of biomass metabolic activity as proved by its total protein content 29% of organic matter and maximum oxygen uptake rate value i.e. 50 mgO2/gVSS h . 95 6 Articolo pubblicato Di_Iaconi_et_al_Annali_di_Chimica_2005.pdf Articolo in rivista Societa chimica italiana 0003 4592 Annali di chimica Testo stamp. Annali di chimica Testo stamp. Ann. chim. Testo stamp. Annali di chimica. Testo stamp. PASSINO ROBERTO claudio.diiaconi DI IACONI CLAUDIO antonio.lopez LOPEZ ANTONIO roberto.ramadori RAMADORI ROBERTO TA.P07.001.001 Sviluppo di tecnologie depurative a regime non stazionario |