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Previous issue date: 2016-02-22 / Este trabalho avalia o desempenho de uma Esta??o de Tratamento de Esgotos na modalidade lodos ativados em batelada sequencial, localizada em regi?o de temperatura alta. Tamb?m apresenta a analise da degrada??o da mat?ria org?nica e a avalia??o das condi??es de sedimentabilidade do lodo, atrav?s de reatores em escala de bancada, alimentados com licor misto proveniente da ETE em estudo, com diferentes concentra??es de substrato e biomassa. Os resultados mostraram, a alta efici?ncia e estabilidade do processo de tratamento utilizando RSB para esgotos dom?sticos, mesmo com bruscas oscila??es de carga org?nica e hidr?ulicas. A an?lise dos reatores em bancada, com rela??es A/M pr?-definidas, apresentou o comportamento da sedimenta??o e da biodegradabilidade da mat?ria org?nica para essas concentra??es, situando a rela??o A/M nas condi??es de opera??o atual da ETE e a rela??o A/M ?tima (Concentra??o do Substrato por Concentra??o da Biomassa), cujo tempo de sedimenta??o e de biodegradabilidade da mat?ria org?nica obt?m a m?xima efici?ncia operacional. / This paper evaluate the performance of a Wastewater Treatment Plant (WWTP) in sequential batch activated sludge modality with tertiary treatment step, located in high temperature region. It also presents the analysis of organic matter?s removal and the evaluation of sludge sedimentation conditions through reactors in bench scale, fed with different substrate?s and biomass? concentrations, from the WWTP in study. The results showed high efficiency and stability of the treatment process using Sequential Batch Reactors for domestic sewage, even with sudden changes of organic and hydraulic load, reaching more than 90% of efficiency in the removal of biodegradable organic matter. The removal of organic matter and sedimentation tests in bench reactors showed the good performance in respect of the organic matter?s removal, however, the high concentration of micro-organism results in a lower sludge sedimentation rate, which can compromise the quality of the final effluent. The relation Food/Microorganism in the conditions of the WWTP?s current operation showed a value of 0.06 gCOD/gVSS.d. and zonal sedimentation velocity of 0.59 m/h, the great ratio of the concentration of the substrate by biomass concentration, which obtained the maximum operational efficiency, showed a value of 0.09 gCOD/gVSS.d. and zonal sedimentation velocity of 1.4 m/h.
| Identifer | oai:union.ndltd.org:IBICT/oai:repositorio.ufrn.br:123456789/21050 |
| Date | 22 February 2016 |
| Creators | Costa Neto, Alfredo |
| Contributors | 37695045268, http://lattes.cnpq.br/7133712883742750, Andrade Neto, Cicero Onofre de, 05712939487, http://lattes.cnpq.br/9961536190401150, Cunha, Paulo Eduardo Vieira, 03090194430, http://lattes.cnpq.br/8375470571725379, Santos, Helio Rodrigues dos, Ara?jo, Andre Luis Calado |
| Publisher | Universidade Federal do Rio Grande do Norte, PROGRAMA DE P?S-GRADUA??O EM ENGENHARIA SANIT?RIA, UFRN, Brasil |
| Source Sets | IBICT Brazilian ETDs |
| Language | Portuguese |
| Detected Language | English |
| Type | info:eu-repo/semantics/publishedVersion, info:eu-repo/semantics/masterThesis |
| Source | reponame:Repositório Institucional da UFRN, instname:Universidade Federal do Rio Grande do Norte, instacron:UFRN |
| Rights | info:eu-repo/semantics/openAccess |
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