Mixing Plant
Mostrando 13-24 de 44 artigos, teses e dissertações.
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13. Anaerobic sewage sludge treatment by liming / HIGIENIZAÇÃO DE LODO ANAERÓBIO DE ESGOTO POR MEIO ALCALINO ESTUDO DE CASO DA ETE LAGES APARECIDA DE GOIÂNIA - GO
The aim of the present study was to evaluate the efficiency of the alkaline treatment of sanitary sewage sludge produced in the upflow anaerobic sludge blanket (UASB) of the Lages Sewage Treatment Plant, located in Aparecida de Goiânia, GO, Brazil and operated by Saneamento de Goiás, S.A. Saneago. The sludge, which was dewatered into drying beds until a me
Publicado em: 2009
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14. Simulation of styrene polymerization reactors: kinetic and thermodynamic modeling
A mathematical model for the free radical polymerization of styrene is developed to predict the steady-state and dynamic behavior of a continuous process. Special emphasis is given for the kinetic and thermodynamic models, where the most sensitive parameters were estimated using data from an industrial plant. The thermodynamic model is based on a cubic equat
Brazilian Journal of Chemical Engineering. Publicado em: 2008-06
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15. Desenvolvimento de mudas de tamarindeiro: tamanhos de recipiente, substratos, peso de sementes e profundidades de semeadura / Development of tamarind seedlings: recipient size, substrate, seed weight and sowing depth
This study expanded the knowledge on tamarind (Tamarindus indica L.) seedling production by analyzing the effects of different container sizes and vermiculite doses in a commercial substrate and seed size and different sowing depths in a nursery seedling production. The experiments were done at the experimental farm Água Limpa in the sector of Fruit Crops,
Publicado em: 2008
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16. Recirculação de água de lavagem de filtros em escala piloto: uma contribuição para avaliação dos perigos associados à presença de protozoários / Recycling of filter backwash water in pilot scale: a contribution for evaluation of the hazards associated to the presence of protozoa
Characterization of the filter backwash water (FBW) from the Federal University of Viçosa water treatment plant (UFV WTP), as well as the results from experiments conducted in a pilot scale WTP, suggested that recycling FBW could be regarded as a hazard introduction in the treatment process. The average concentration of Giardia spp. and Cryptosporidium spp.
Publicado em: 2007
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17. Análise da Conformidade e Caracterização da Matéria- Prima Empregada na Fabricação de Blocos Cerâmicos na Região Metropolitana de Salvador
The potential market of the metropolitan area of Salvador accounts for the estimated consumption of roughly 800 million horizontally perforated extruded clay bricks a year. The growing demand of consumers along with the competitiveness of the structural ceramic sector has driven forward a number of recent efforts and investments towards improving the quality
Publicado em: 2007
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18. Phosphorus removal in effluent of wastewater treatment plant with water treatment residuals (WTR). / Remoção de fósforo de efluentes de estações de tratamento biológico de esgotos utlizando lodo de estação de tratamento de água.
Phosphorus is considered as the main responsible for the nutritional enrichment of reservoirs of public drinking water supplies, because eutrophication process has resulted in toxic algae blooms, and therefore its removal has a great significance since these toxins represent a public health risk and environment. The aim of this research work was to evaluate
Publicado em: 2006
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19. Simulação de sistemas de climatização combinada à simulação higrotérmica de edificações
Due to the nonexistence of a building simulation program that can simulate in details the combined heat, vapor and liquid transfer in porous elements and the HVAC systems, a generic and flexible computational algorithm has been elaborated in order to integrate models for both HVAC systems and multizone building models. In that algorithm, mathematical models
Publicado em: 2006
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20. Remoção de Oocistos de Cryptosporidium por filtração direta: Influência de alguns aspectos operacionais / Removal of Cryptosporidium Oocysts by direct filtration: the influence some operational aspects
The present work deal with the removal of Cryptosporidium oocysts by downflow direct filtration with almost uniform filter bed to verify the influence of operational aspects such as coagulant dosage, filtration flow rate and raw waters characteristcs. The experimental work was carried out in pilot-plant comprised by a hydraulic flash mixing device and a rapi
Publicado em: 2006
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21. Caracterização química de resíduos da produção de biodiesel compostados com adição mineral / Chemical characterization of residues from biodiesel production composted with mineral addiction
The production of biodiesel has in agriculture its base of sustentation. The culture of sugar cane and oleaginous species as castor oil plant after processing to obtain alcohol and vegetal oil, respectively, generates organic residues. These residues when used in agriculture in the compost form make possible the reduction of production costs and increase of
Publicado em: 2006
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22. RETENÃÃO DE CLOROFILA E SEUS EFEITOS SOBRE A QUALIDADE FISIOLÃGICA DE SEMENTE DE SOJA / Chlorophyll retention and its effects on physiological quality of soybean seed
This study was composed by three experiments related to the effects of chlorophyll retention in soybean seeds. The first one determined the effects of water deficit and high temperature stresses during maturation on the expression level of green seeds. The second evaluated the susceptibility of different genotypes to the expression of this problem. The third
Publicado em: 2006
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23. Research of dosfolat addition in activated sludge systems for control and decrease the quantity of produced sludge. / Investigação da adição de dosfolat em sistemas de lodos ativados para controle e redução de lodo gerado.
Aiming to study the reduction in waste production in the activated sludge process, a Treatment Pilot Plant was built at Centro Tecnológico de Hidráulica, situated at the campus of Universidade de São Paulo, in São Paulo. The Pilot Plant was composed of two parallel and identical systems, that were operated in the conventional activated sludge process wit
Publicado em: 2005
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24. Industrial process modeling of continuous alcholic fermentation in cascade bioreactors / Modelagem de processo industrial de fermentação alcoolica continua com reatores de mistura ligados em serie
This work aimed to determinate a model that best describes the industrial scale alcoholic fermentation in continuous serial mixing reactors. Software was developed in order to establish the kinetics parameters, using analysis data performed on samples from operating plants. The models described by Tosseto (2002), Lee; Pagan; Rogers (1983) and Levenspiel (198
Publicado em: 2005