Utilize este identificador para referenciar este registo:
https://hdl.handle.net/1822/1574
Título: | Feasibility of a pulsed sequencing batch reactor with anaerobic aggregated biomass for the treatment of low strenght wastewaters |
Autor(es): | Brito, A. G. Rodrigues, A. C. Melo, L. F. |
Palavras-chave: | Anaerobic treatment Low strength wastewaters SBR reactors Pulsed reactors Granules Sub-optimal temperature |
Data: | 1997 |
Editora: | Elsevier 1 |
Revista: | Water science & technology |
Citação: | "Water science & technology". ISSN 0273-1223. 35:1 (1997) 193-198. |
Resumo(s): | This study concerns an assessment of a SBR operation that associates anaerobic aggregated biomass with a pulsed action during the reaction phase, a system named Pulsed Sequencing Batch Reactor (P-SBR). The system uses a diaphragm pump as a pulsator unit to increase the liquid-solid contact, in order to avoid dead zones and possible external mass transfer resistance. A preliminary study of the operation of the reactor was performed with a low strenght synthetic wastewater with a COD near 1000mg.lˉ¹ and a sub-optimal temperature of 22ºC. A removal efficiency of 60-70% was attained after 5 and 6 hours of reaction time. The respective organic loads were 5-6 kg COD.mˉ³.dayˉ¹, thus supporting the feasibility of the P-SBR system for wastewater treatment in such conditions. The results also indicate that a ratio of 1.8%o between the swept volume delivered by the pump and the reactor volume was adequate to promote a flow turbulence in the sludge blanket and that a redox potential of near -400 mV was readily created by anaerobic bacteria after the reactor filling step. |
Tipo: | Artigo |
URI: | https://hdl.handle.net/1822/1574 |
DOI: | 10.1016/S0273-1223(96)00896-7 |
ISSN: | 0273-1223 |
Arbitragem científica: | yes |
Acesso: | Acesso aberto |
Aparece nas coleções: | CEB - Publicações em Revistas/Séries Internacionais / Publications in International Journals/Series |
Ficheiros deste registo:
Ficheiro | Descrição | Tamanho | Formato | |
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1997-06[1].pdf | 305,6 kB | Adobe PDF | Ver/Abrir |