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Reator Anaeróbio-aeróbio De Leito Fixo, Com Recirculação Da Fase Líquida, Aplicado Ao Tratamento De Esgoto Sanitário
| Content Provider | Semantic Scholar |
|---|---|
| Author | Netto, Oliveira De, Antonio Pedro |
| Copyright Year | 2007 |
| Abstract | OLIVEIRA NETTO, A. P. (2007). Anaerobic-aerobic fixed bed reactor, with recycle of the liquid phase, applied to the treatment of domestic sewage. Sao Carlos, Dissertation (Master's degree) Escola de Engenharia de Sao Carlos, Universidade de Sao Paulo. This work evaluated the performance of a system that combines anaerobic and aerobic processes, for treatment of domestic sewage. The bench-scale fixed-film reactor was operated in a continuous way without and with recycle of the liquid phase. Expanded clay and polyurethane foam were used as supports for immobilization of the biomass. Initially, the system was operated under anaerobic condition and its performance was evaluated for three different hydraulic retention times (HRT), 6, 8 and 10 h. In this phase, COD removal efficiency of 80% was reached for HRT of 10 h, with effluent COD below 150 mgCOD/L. The combined anaerobic-aerobic operation (HRT of approximately 11 h, being 8 h for the anaerobic phase and 3 h for the aerobic phase) favored the organic matter removal that reached 90%, with effluent COD below 50 mgCOD/L. The operation with liquid recycle provided the best results with COD removal of 95% and total nitrogen removal of 75% under recycle ratio of 1.5. The anaerobic-aerobic fixed bed reactor, with recycle of the liquid phase, proved to be an excellent alternative for domestic sewage treatment, mainly when organic matter and nitrogen removals are required. The concomitant C and N removal without addition of exogenous source electron donor and with no additional alkalinity supplementation was the main advantage of this reactor over the conventional reactors applied for this purpose. |
| File Format | PDF HTM / HTML |
| DOI | 10.11606/D.18.2007.tde-07052007-143501 |
| Alternate Webpage(s) | https://www.teses.usp.br/teses/disponiveis/18/18138/tde-07052007-143501/publico/OLIVEIRANETTO2007.pdf |
| Alternate Webpage(s) | https://doi.org/10.11606/D.18.2007.tde-07052007-143501 |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |
