Ammonia Removal
Mostrando 13-24 de 113 artigos, teses e dissertações.
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13. Cultivo integrado de juvenis de TilÃpia do Nilo (Oreochromis niloticus) com a microalga Spirulina platensis: uma alternativa para tratamento de efluente aquÃcola / Culture integrated youth of nile tilapia (Oreochromis niloticus) with microalgae Spirulina platensis: an alternative for treatment of aquaculture effluent
The environmental potential impacts from intensive aquaculture have increased public concern about the sustainability of the activity itself. The present work aimed to evaluate the zootÃcincos parameters of Nile tilapia , water quality, algal biomass production and rate of nitrogen removal compounds by Spirulina platensis realize an integrated cultivation o
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 24/02/2012
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14. Impacto da presenÃa de atrazina na comunidade bacteriana do solo / Impact of atrazine on bacteriological soil community
Chemical contamination removal in soil and water depends on microbiological community that is able to degrade these compounds. There is a great evolutionary interest on studying microorganisms that metabolize the xenobiotic ones, since they have relatively been seen as new in the last five decades. Little is known about structure variation of microbiological
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 13/02/2012
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15. Nitrogen removal from landfill leachate via the nitrite route
The feasibility of removing nitrogen from mature landfill leachate using the nitrite route was investigated in a two-stage SBR system - (1º first stage, short-cut nitrification; second stage, denitrification via nitrite. With a volumetric exchange rate (n) of 0.3 d-1 and an oxygen concentration of between 1.2 and 1.3 mg/L, the nitrite accumulation ratio - (
Brazilian Journal of Chemical Engineering. Publicado em: 2012-06
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16. Estudo da remoção de nitrogênio amoniacal por processo de arraste com ar (air stripping) em lixiviado de aterro sanitário
O lixiviado de aterro sanitário possui alto potencial poluidor, com elevadas concentrações de cloretos, matéria orgânica e nitrogênio amoniacal. Seu processo de tratamento é muito complexo e geralmente envolve diferentes tecnologias. Devido à sua eficácia, o stripping é um tratamento amplamente utilizado para a remoção de NH3 de lixiviado. Esta p
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 15/09/2011
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17. Tratamento de esgoto sanitário pelo sistema zona de raízes utilizando plantas de bambu / Sewage treatment by root zone system using bamboo plants.
This study aimed to evaluate the efficiency of three species of bamboo (Guadua angustifolia, Phyllostachys aurea and Phyllostachys bambusoides) in the sanitary sewage treatment, with a vertically downward sub-surface flow root zone system, in Goiânia, GO, Brazil. Sewage from a university was applied to asbestos cement water tanks with 1,000 liters volume ca
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 31/08/2011
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18. Tratamento de esgoto sanitário pelo sistema zona de raízes utilizando plantas de bambu / Sewage treatment by root zone system using bamboo plants.
This study aimed to evaluate the efficiency of three species of bamboo (Guadua angustifolia, Phyllostachys aurea and Phyllostachys bambusoides) in the sanitary sewage treatment, with a vertically downward sub-surface flow root zone system, in Goiânia, GO, Brazil. Sewage from a university was applied to asbestos cement water tanks with 1,000 liters volume ca
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 31/08/2011
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19. Avaliação da qualidade da água de chuva e de um sistema filtro-vala-trincheira de infiltração no tratamento do escoamento superficial direto predial em escala real em São Carlos SP / Evaluation of rainfall water quality and a filter-swaleinfiltration trenches system in the treatment of the building direct runoff in real scale in são carlos sp
Several studies cite the pollution of stormwater as equivalent and sometimes even superior to those found in the sewers. According to this premise and thinking about environmental issues, especially in the contamination of groundwater and the spread of waterborne diseases, the quality of rainwater has become an important focus of study. This work concerns th
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 24/08/2011
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20. Nitrificação e desnitrificação simultânea em reator com biomassa em suspensão e fluxo contínuo de esgoto / Simultaneous nitrification and denitrification in reactor with biomass in suspension and continuous flow of sewage
It was developed in Europe the process known as Simultaneous Nitrification and Denitrification (SND) in activated sludge that operates with a SRT, high enough for nitrification to occur, even with low concentration of dissolved oxygen in the aeration tanks. Such situation in the tanks is possible to maintain anoxic conditions inside the flocs and to have the
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 27/07/2011
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21. Pós-tratamento de efluente de lagoa facultativa visando à remoção de nitrogênio amoniacal. / Post treatment of facultative pond effluent aiming removal of ammonia nitrogen.
Discute o pós-tratamento de efluente de lagoas facultativas visando à remoção de nitrogênio amoniacal. Para isso, foram utilizadas unidades terciárias em escala piloto. A escolha do tipo de unidades para o pós-tratamento do efluente levou em consideração a questão do baixo custo e simplicidade de operação. Desta forma, para o estudo, fez-se opç�
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 08/04/2011
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22. Desempenho de tanques vegetados em um ecossistema engenheirado para tratamento descentralizado de esgotos domiciliares na Ilha Grande, RJ / Performance of vegetated tanks in an engineered ecosystem for decentralized treatment of sewage in Grande Island, RJ
The lack of appropriate infrastructure for sewage collection and treatment affects several communities living under unhealthy conditions in coastal areas and in insular systems in Rio de Janeiro State. The objective of this study was to assess the performance of an engineering ecosystem for the descentralized treatment of domestic wastewater located at the C
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 23/03/2011
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23. Biological nitrogen removal over nitritation/denitritation using phenol as carbon source
A laboratory scale activated sludge sequencing batch reactor was operated in order to obtain total removal of influent ammonia (200; 300 and 500 mg NH3-N.L-1) with sustained nitrite accumulation at the end of the aerobic stages with phenol (1,000 mg C6H5OH.L-1) as the carbon source for denitrifying microorganisms during the anoxic stages. Ammonia removal abo
Brazilian Journal of Chemical Engineering. Publicado em: 2011-06
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24. Estudo preliminar da determinação de amônio por cromatografia de íons e sua remoção em lixiviados de resíduos sólidos utilizando argilas / Preliminary study of ammonium determination by ion chromatography and its removal in leachates from solid waste using clay
The amount of waste generated has grown rapidly, being larger than the population growth rate, indicating an increase in per capita generation becoming worrisome, as the final disposal of waste is performed and environmental impact. Among the impacts, is the production of leachate, a high organic pollutant with high concentrations of ammonium and strong stai
Publicado em: 2011