Granular Sludge
Mostrando 1-12 de 58 artigos, teses e dissertações.
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1. RESEARCHING NEW WAYS TO REDUCE N2O EMISSION FROM A GRANULAR SLUDGE SEQUENCING BATCH REACTOR TREATING DOMESTIC WASTEWATER UNDER SUBTROPICAL CLIMATE CONDITIONS
ABSTRACT N2O emissions from wastewater treatment plants have become an important issue, since this compound is a significant greenhouse gas that affects the sustainability of sewage treatment. This work aimed to investigate and to reduce N2O emission from a pilot-scale aerobic granular sludge sequencing batch reactor (AGS-SBR) operated for carbon and nitroge
Braz. J. Chem. Eng.. Publicado em: 15/07/2019
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2. Granulated and Biosolid Fertilizers on the Quality of Schinus terebinthifolius Raddi Seedlings
ABSTRACT The objectives of this study were to evaluate substrates produced from the peach-palm agroindustry waste and sewage sludge as a source of nutrients for the production of Brazilian Peppertree seedlings (Schinus terebinthifolius Raddi), and to compare the performance of these substrates under various levels of slow release fertilizer for this species.
Floresta Ambient.. Publicado em: 30/05/2019
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3. Potencial de metanização da biodigestão anaeróbia de resíduos sólidos alimentares
RESUMO A biodigestão anaeróbia de resíduos sólidos e semissólidos vem sendo bastante utilizada para o tratamento destes resíduos e produção de metano; no entanto, durante o referido processo (mais especificamente na fase acidogênica), existe uma tendência de redução do pH, condição desfavorável às bactérias metanogênicas. Desta forma, o pre
Rev. bras. eng. agríc. ambient.. Publicado em: 2018-01
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4. Biomethane production from vinasse in upflow anaerobic sludge blanket reactors inoculated with granular sludge
ABSTRACT The main objective of this study was to evaluate the anaerobic conversion of vinasse into biomethane with gradual increase in organic loading rate (OLR) in two upflow anaerobic sludge blanket (UASB) reactors, R1 and R2, with volumes of 40.5 and 21.5 L in the mesophilic temperature range. The UASB reactors were operated for 230 days with a hydraulic
Braz. J. Microbiol.. Publicado em: 2016-09
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5. Sequencing batch reactor operation for treating wastewater with aerobic granular sludge
In this work, the performance of a sequencing batch reactor (SBR) on aerobic granular sludge was studied for urban wastewater treatment. The system was inoculated with aerobic activated sludge collected from a wastewater treatment plant and, after 30 days of operation, the first granules observed had an average diameter of 0.1 mm. The biomass concentration r
Braz. J. Chem. Eng.. Publicado em: 2014-03
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6. Tratamento com lodo aeróbio granular de efluente de fábrica de papel / Aerobic granular sludge treatment of paper mill effluents
The activated sludge process is widely used for the treatment of industrial effluents, achieving high rates of organic matter removal. Nevertheless, the separation of biological sludge in secondary clarifiers can be a serious problem of this process due to the poor floc formation, causing solids losses and, consequently, deterioration of treated effluent qua
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 17/02/2011
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7. Methanogenic potential and microbial community of anaerobic batch reactors at different ethylamine/sulfate ratios
Methylamine and sulfate are compounds commonly found in wastewaters. This study aimed to determine the methanogenic potential of anaerobic reactors containing these compounds and to correlate it with their microbial communities. Batch experiments were performed at different methylamine/sulfate ratios of 0.71, 1.26 and 2.18 (with respect to mass concentration
Brazilian Journal of Chemical Engineering. Publicado em: 2011-03
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8. Production and characterization of granular activated carbon from activated sludge
In this study, activated sludge was used as a precursor to prepare activated carbon using sulfuric acid as a chemical activation agent. The effect of preparation conditions on the produced activated carbon characteristics as an adsorbent was investigated. The results indicate that the produced activated carbon has a highly porous structure and a specific sur
Brazilian Journal of Chemical Engineering. Publicado em: 2009-03
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9. Obtenção e caracterização filogenética de consórcio de bactérias púrpuras não-sulforosas consumidoras de ácidos orgânicos visando a produção de hidrogênio em reator anaeróbio de batelada / Obtaintion and phylogenetic characterization of consortium of phototrophic purple non-sulfur bacteria for hydrogen production from organic acids in the anaerobic batch reactor
The aim of this work was enrich a mixture of granular sludge of an up flow anaerobic sludge blanket (UASB) under anoxygenic phototrophic conditions. The techniques of molecular biology identified 17 operational taxonomic units (UTO) in the microbial consortium among the sequences analised, which were similar to Rhodobacter, genus widely cited in studies of h
Publicado em: 2009
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10. Desempenho de um reator anaeróbico em bateladas sequenciais no tratamento de lixiviado proveniente da degradação de resíduos sólidos urbanos / Performance of an Anaerobic Sequencing Batch Reactor treating leachate from the degradation of urban solid waste / Performance of an Anaerobic Sequencing Batch Reactor treating leachate from the degradation of urban solid waste / Desempenho de um reator anaeróbico em bateladas sequenciais no tratamento de lixiviado proveniente da degradação de resíduos sólidos urbanos
Esta pesquisa foi realizada em um Reator Anaeróbio operando em Bateladas Seqüenciais (RBSAN) cujo volume reacional foi 20 L e inoculado com lodo granular proveniente de um reator UASB tratando despejos de cervejaria. O RBSAN foi operado sob duas etapas distintas (com e sem agitação mecânica). A agitação mecânica foi promovida por meio de impelidor do
Publicado em: 2008
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11. Influência da taxa de carregamento orgânico na degradação anaeróbia da vinhaça em reator de leito fluidizado
In this work, the mesophilic anaerobic degradation (35 C) of the sugar cane vinasse was studied in an anaerobic fluidized bed reactor (RALF) for 255 days. The reactor, built in acrylic and with a total volume of 4,192 cm3, was filled with polystyrene particles as a means support, occupying 70 % of the total volume, and operated with hydraulic retention time
Publicado em: 2008
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12. Landfill leachate treatment in sequence anaerobic and aerobic batch reactors systems / Tratamento de lixiviados de aterros sanitários em sistema de reatores anaeróbio e aeróbio operados em batelada seqüencial
Este trabalho avaliou a tratabilidade dos lixiviados do aterro sanitário de São Carlos-SP, utilizando-se reatores biológicos. O experimento foi conduzido à temperatura ambiente, em uma unidade piloto construída no aterro sanitário de São Carlos-SP. Inicialmente foram testados e comparados dois tipos de reatores anaeróbios, cada um com volume total de
Publicado em: 2008