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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
1

Avaliação de sistema composto por reatores anaeróbios e aeróbio para tratmento de águas residuárias de suinocultura /

Santana, Adriana Miranda de. January 2008 (has links)
Orientador: Roberto Alves de Oliveira / Banca: Egenio Foresti / Banca: Maria Bernadete Amâncio Varesche / Banca: Wanderley José de Melo / Banca: Edson Aparecido Abdul Nour / Resumo: Neste trabalho avaliou-se o desempenho de sistema de tratamento combinado anaeróbio-aeróbio constituído por dois reatores anaeróbios de fluxo ascendente com manta de lodo (UASB), em série, em escala piloto (volumes de 510 e 209 L, respectivamente) seguidos de um reator em batelada seqüencial (RBS - volume de trabalho 210 L) aeróbio, tratando águas residuárias de suinocultura com concentrações médias de sólidos suspensos totais (SST) variando de 5 a 11 g L-1 e submetidos a tempos de detenção hidráulica (TDH) de 28 e 14 h no primeiro reator (R1), 11 e 6 h no segundo reator (R2) e de 58 e 26 h no RBS. As eficiências médias de remoção de DQO total e SST variaram de 54 a 90% e de 54 a 96%, respectivamente, no conjunto de reatores UASB em dois estágios (R1+R2), com carga orgânica volumétrica (COV) de 11 a 26 g DQO (L d)-1 no R1. A produção volumétrica máxima de metano de 1,613 m3 CH4 (m3 reator d)-1 ocorreu no R1, com COV de 19 g DQO (L d)-1 e TDH de 14 h. No RBS aeróbio, como pós-tratamento do efluente gerado nos reatores UASB, as eficiências médias de remoção foram 89%, 93%, 61%, 89% e 71% para a DQO total, SST, P-total, NTK e NT, respectivamente, com COV variando de 0,4 a 3,6 g DQO (L d)-1. Assim, no sistema de tratamento combinado anaeróbio-aeróbio (R1+R2+RBS), as eficiências médias de remoção da DQO total, SST, P-total, NTK e NT atingiram valores de 96 a 99%, 96 a 99%, 77 a 85%, 76 a 97% e 68 a 89%, respectivamente, e dos micronutrientes de 77 a 98%, 94 a 99%, 83 a 97% e de 62 a 99% para Fe, Zn, Cu e Mn, respectivamente, Para os coliformes termotolerantes, as eficiências de remoção médias foram de 93,80 a 99,99%, obtendo-se valores mínimos de 2,3 x 103 NMP/100 mL. A atividade metanogênica específica do lodo dos reatores UASB foi mais elevada quando se utilizou o propionato + butirato como fonte de substrato, e quando os reatores foram operados... (Resumo completo, clicar acesso eletrônico abaixo) / Abstract: In this work a combination between aerobic and anaerobic treatment systems constituted by two Upflow Anaerobic Sludge Reactor (UASB) in series, in a pilot scale (510 and 209 L volume each respectively) followed by a sequential batch reactor (SBR - 210L net volume) aerobic, treating swine residual water having from 5 to 11 g L-1 of Total Suspended Solids (TSS) and under a hydraulic detention timing (HDT) of 28 and 14 hours in the first reactor (R1), 11 and 6 hours in the second reactor (R2) and 58 and 26 hours in the Sequential Batch Reactor (RBS). The COD and TSS average efficiency varied from 54 to 90% and from 54 to 96% respectively in the UASB two stages (R1 and R2), in a volumetric organic load (VOL) varying from 11 to 26g COD (L d)-1 in the R1. The maximum methane volumetric production was 1.613 m3 CH4 (m3 reactor d)-1 in the R1, having a 19g COD (L d)-1 and an HDT of 14h. Using an aerobic SBR as an effluent pretreater that was generate in the UASB reactors, it was reached an average of removing efficiency of 89%, 93%, 61%, 89% and 71% to total COD, TSS, total P, TNK and TN, respectively, COD varying from 0.4 to 3.6 g COD (L d)-1. This way, in the anaerobic-aerobic combined system (R1 + R2 + RBS) the total COD, TSS, total P, TNK and TN, average removing reached values from 96 to 99%, 96 to 99%, 77 to 85%, 76 to 97% and 68 to 89%, respectively. To Fe, Zn, Cu and Mn the average efficiency was from 77 to 98%, 94 to 99%, 83 to 97% and 62 to 99%, respectively. To the thermotolerant coliforms the removal efficiency average was from 93.80 to 99.99% reaching the lower value of 2.3 x 103 MPN/100 mL. The sludge specific methanogenic activity in the UASB reactors was more elevated when was used the propionate + butyrate as substrate in conjunction with the operation of 28 HDT, 11h and TSS affluent around 5 g L-1, reaching 0.443 and 0.206 mmol CH4 (g SV h)-1 in the reactors R1 and R2, respectively. / Doutor
2

Avaliação de sistema composto por reatores anaeróbios e aeróbio para tratmento de águas residuárias de suinocultura

Santana, Adriana Miranda de [UNESP] 09 December 2008 (has links) (PDF)
Made available in DSpace on 2014-06-11T19:32:54Z (GMT). No. of bitstreams: 0 Previous issue date: 2008-12-09Bitstream added on 2014-06-13T19:43:44Z : No. of bitstreams: 1 santana_am_dr_jabo.pdf: 5909203 bytes, checksum: 3d660be8aee8bbcfabdb656e3b158b48 (MD5) / Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP) / Neste trabalho avaliou-se o desempenho de sistema de tratamento combinado anaeróbio-aeróbio constituído por dois reatores anaeróbios de fluxo ascendente com manta de lodo (UASB), em série, em escala piloto (volumes de 510 e 209 L, respectivamente) seguidos de um reator em batelada seqüencial (RBS - volume de trabalho 210 L) aeróbio, tratando águas residuárias de suinocultura com concentrações médias de sólidos suspensos totais (SST) variando de 5 a 11 g L-1 e submetidos a tempos de detenção hidráulica (TDH) de 28 e 14 h no primeiro reator (R1), 11 e 6 h no segundo reator (R2) e de 58 e 26 h no RBS. As eficiências médias de remoção de DQO total e SST variaram de 54 a 90% e de 54 a 96%, respectivamente, no conjunto de reatores UASB em dois estágios (R1+R2), com carga orgânica volumétrica (COV) de 11 a 26 g DQO (L d)-1 no R1. A produção volumétrica máxima de metano de 1,613 m3 CH4 (m3 reator d)-1 ocorreu no R1, com COV de 19 g DQO (L d)-1 e TDH de 14 h. No RBS aeróbio, como pós-tratamento do efluente gerado nos reatores UASB, as eficiências médias de remoção foram 89%, 93%, 61%, 89% e 71% para a DQO total, SST, P-total, NTK e NT, respectivamente, com COV variando de 0,4 a 3,6 g DQO (L d)-1. Assim, no sistema de tratamento combinado anaeróbio-aeróbio (R1+R2+RBS), as eficiências médias de remoção da DQO total, SST, P-total, NTK e NT atingiram valores de 96 a 99%, 96 a 99%, 77 a 85%, 76 a 97% e 68 a 89%, respectivamente, e dos micronutrientes de 77 a 98%, 94 a 99%, 83 a 97% e de 62 a 99% para Fe, Zn, Cu e Mn, respectivamente, Para os coliformes termotolerantes, as eficiências de remoção médias foram de 93,80 a 99,99%, obtendo-se valores mínimos de 2,3 x 103 NMP/100 mL. A atividade metanogênica específica do lodo dos reatores UASB foi mais elevada quando se utilizou o propionato + butirato como fonte de substrato, e quando os reatores foram operados... / In this work a combination between aerobic and anaerobic treatment systems constituted by two Upflow Anaerobic Sludge Reactor (UASB) in series, in a pilot scale (510 and 209 L volume each respectively) followed by a sequential batch reactor (SBR – 210L net volume) aerobic, treating swine residual water having from 5 to 11 g L-1 of Total Suspended Solids (TSS) and under a hydraulic detention timing (HDT) of 28 and 14 hours in the first reactor (R1), 11 and 6 hours in the second reactor (R2) and 58 and 26 hours in the Sequential Batch Reactor (RBS). The COD and TSS average efficiency varied from 54 to 90% and from 54 to 96% respectively in the UASB two stages (R1 and R2), in a volumetric organic load (VOL) varying from 11 to 26g COD (L d)-1 in the R1. The maximum methane volumetric production was 1.613 m3 CH4 (m3 reactor d)-1 in the R1, having a 19g COD (L d)-1 and an HDT of 14h. Using an aerobic SBR as an effluent pretreater that was generate in the UASB reactors, it was reached an average of removing efficiency of 89%, 93%, 61%, 89% and 71% to total COD, TSS, total P, TNK and TN, respectively, COD varying from 0.4 to 3.6 g COD (L d)-1. This way, in the anaerobic-aerobic combined system (R1 + R2 + RBS) the total COD, TSS, total P, TNK and TN, average removing reached values from 96 to 99%, 96 to 99%, 77 to 85%, 76 to 97% and 68 to 89%, respectively. To Fe, Zn, Cu and Mn the average efficiency was from 77 to 98%, 94 to 99%, 83 to 97% and 62 to 99%, respectively. To the thermotolerant coliforms the removal efficiency average was from 93.80 to 99.99% reaching the lower value of 2.3 x 103 MPN/100 mL. The sludge specific methanogenic activity in the UASB reactors was more elevated when was used the propionate + butyrate as substrate in conjunction with the operation of 28 HDT, 11h and TSS affluent around 5 g L-1, reaching 0.443 and 0.206 mmol CH4 (g SV h)-1 in the reactors R1 and R2, respectively.

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