Tratamento anaeróbio-aeróbio de águas residuárias de suinocultura e reúso na produção de milho para silagem

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Tratamento de águas residuárias de suinocultura em reator anaeróbio compartimentado seguido de reator UASB

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Desempenho de reator anaeróbio de fluxo ascendente alimentado com lodo de estação de tratamento de água e esgoto sanitário

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Biodigestão anaeróbia da cama de frango associada ou não ao biofertilizante obtido com dejetos de suínos: produção de biogás e qualidade do biofertilizante

Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)

Biodigestão anaeróbia da cama de frangos de corte com ou sem separação das frações sólida e líquida

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Desenvolvimento de um sistema para o pré-processamento da cama de frangos de corte destinada a biodigestão anaeróbia e compostagem in-vessel

Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)

Co-digestão anaeróbia de dejetos de bovinos e dois tipos de glicerina bruta

Pós-graduação em Agronomia (Energia na Agricultura) - FCA

Resíduos sólidos urbanos em área de proteção aos mananciais - município de São Lourenço da Serra - SP: compostagem e impacto ambiental

Pós-graduação em Agronomia (Energia na Agricultura) - FCA

Avaliação do potencial de reuso agrícola do efluente de uma estação de tratamento de esgoto com alagados construídos

Pós-graduação em Agronomia (Energia na Agricultura) - FCA

Tratamento de águas residuárias de suinocultura em reatores UASB e em batelada com fase aeróbia, em série, e reuso na produção de milho e sorgo

Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)

Viabilidade técnica e econômica da implantação da biodigestão anaeróbia e aplicação de biofertilizante nos atributos de solo e plantas

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Performance of UASB reactors in two stages followed by post-treatment with activated sludge in wastewater batch of wet-processed coffee

In this study it was evaluated the efficiency of the treatment of wet-processed coffee wastewater in upflow anaerobic sludge blanket (UASB) reactors in two stages, in bench scale, followed by post-treatment with activated sludge in batch. The first UASB reactor was submitted to an hydraulic retention time (HRT) of 6.2 d and organic loading rates (OLR) of 2.3 and 4.5g CODtotal (L d)-1, and the second UASB reactor to HRT of 3.1 d with OLR of 0.4 and 1.4g CODtotal (L d)-1. The average values of the affluent CODtotal increased from 13,891 to 27,926mg L-1 and the average efficiencies of removal of the CODtotal decreased from 95 to 91%, respectively, in the UASB reactors in two stages. The volumetric methane production increased from 0.274 to 0.323L CH4 (L reactor d)-1 with increment in the OLR. The average concentrations of total phenols in the affluent were of 48 and 163mg L-1, and the removal efficiencies in the UASB reactors in two stages of 92 and 90%, respectively, and increased to 97% with post-treatment. The average values of the removal efficiencies of total nitrogen and phosphorus were of 57 to 80% and 44 to 60%, respectively, in the UASB reactors in two stages and increased to 91 and 84% with the post-treatment.

Avaliação do potencial pozolânico da cinza de lodo de águas residuárias por meio de técnicas instrumentais

Pós-graduação em Engenharia Civil - FEIS

Influence of the surface treatment of tire rubber residues added in mortars

Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)

Avaliação da auto-suficiência energética de reatores anaeróbios no tratamento de esgoto sanitário e água cinza

The anaerobic treatment of sewage is widely employed in Brazil and it is an appreciated way for the treatment of effluents, helping to reduce the environmental impact in rivers. The methane gas obtained from the process can be applied to improve the energetic efficiency of the system, reducing the amount of waste and the cost of the treatment process. This work presents the net energy balance of anaerobic reactors applied to the treatment of sewage. The analysis was performed considering full-scale and laboratory-scale treatment systems. In laboratory scale, the results from three kinds of systems were compared regarding the biological treatment of greywater. Two of them (UASB7 and UASB12) were anaerobic and the other one was a combined anaerobic-aerobic system (UASB7/SBR6). Greywater methanization (compared to theoretical maximum) was calculated considering 100% removal (g BOD/day), the literature percentage removal and the anionic surfactant presence in the effluentt. For each of these three cases, the efficiencies were, respectively, 16.9%, 43.6% and 51.3% in UASB7 reactor, 25.6%, 50.3% and 59.2% in UASB12 reactor and 30.6%, 61.2% and 71.9% in UASB7/SBR6 reactor. The energetic potential was found to be 4.66x10-4, 7.77x10-4 and 5.12x10-4 kWh/L for the UASB7, UASB12 and UASB7/SBR6 reactors, respectively. The pumping system, the aeration (in the anaerobic-aerobic system) and the temperature controlled heating system were considered to calculate the energetic consumption. However, the third one was not employed since tropical regions like Brazil do not need heating systems and also because of its high energetic consumption. The calculated net energy balance in the reactors was negative in the case of greywater, respectively -0.16, -0.28 and -0.18 kWh/L for the reactors UASB7, UASB12 and UASB7/SRB6. In full scale (ETE Jardim das Flores - Rio Claro, SP), the average energy... (Complete abstract click electronic access below)