Nitrogen Removal Through Nitrite
Mostrando 1-12 de 14 artigos, teses e dissertações.
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1. Nitrificação de águas amarelas em leito percolante de areia
RESUMO O esgotamento sanitário ecológico conscientiza a população sobre a importância do reúso da água com maior eficiência e do uso de efluentes de sistemas de tratamento descentralizados. O presente trabalho descreve os resultados da nitrificação de águas amarelas em reator biológico com a utilização de materiais simples, por exemplo, a areia
Eng. Sanit. Ambient.. Publicado em: 26/08/2019
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2. Microbial diversity associated with the use of sulfide as electron donor for nitrogen removal from wastewater of reactors applied to anaerobic treatment of sewage / Diversidade microbiana associada ao uso de sulfeto como doador de elétrons para a remoção de nitrogênio de efluentes de reatores anaeróbios aplicados ao tratamento de esgotos sanitários
The widespread nitrate contamination in concentrations higher than recommended by legislation has raised interest in technologies for water and wastewater treatment. Biological nitrogen removal is relatively low cost and higher efficiency. Sulfide as electron donor can be oxidized to elemental sulfur or sulfate by sulfide oxidizing bacteria that can use nitr
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 10/08/2012
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3. 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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4. Remoção de nitrogênio de lixiviado de resíduos sólidos urbanos por meio do processo nitrificação/desnitrificação via nitrito em reator em bateladas sequenciais / Nitrogen removal from solid waste leachate by nitrification/denitrification via nitrite in a sequencing batch reactor.
The leachate is an effluent with high potential to cause environmental problems in receiving body due to the high concentrations of ammoniacal nitrogen. Currently, several treatment processes have been studied to promote nitrogen removal by the hand of conventional process variations. Therefore, the present study was developed to evaluate the performance of
Publicado em: 2009
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5. RemoÃÃo biolÃgica de nitrogÃnio de efluente avÃcola usando reator em batelada sequÃncial
Slaughterhouses and bird cold storage processing plants stand out as large polluters, particularly because of the large amounts of waste rich in organic substances, solids, oils and greases, nutrients, specially nitrogen and phosphorus. Nitrogen compounds removal from wastewater is usually accomplished through biological processes, by nitrification under aer
Publicado em: 2009
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6. Aerobic biofilms for nitrogen removal in flow cells, submitted to different superficial velocities and loading rates / Biofilmes aeróbios para remoção de nitrogênio em células de fluxo, submetidos a diferentes velocidades superficiais e taxas de carregamento
The post-treatment of anaerobic reactor effluents, such as the Upflow Anaerobic Sludge Blanket (UASB), in most applications, is necessary, since this kind of biological treatment promotes BOD removal ranging from 60 to 75% and it has low efficiency in nitrogen and phosphorous removal. Nitrogen removal is usually carried out in a conventional way through nitr
Publicado em: 2009
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7. Enriquecimento de consórcios microbianos em quimiostatos sob condições anammox / Enrichment of microbial trusts in chemostats with anammox conditions
This research aimed to enrich and to purify, in chemostats, microbial trusts capable to realize ammonium oxidation to dinitrogen (N IND.2) under anaerobic conditions, using as inoculum: (Q1) biomass from nitrifying-denitrifying reactor of wastewater treatment plant of amino-acids industry (Ajinomoto) and (Q2) granular sludge from upflow anaerobic sludge blan
Publicado em: 2007
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8. Tratamento de efluente de piscicultura orgÃnica utilizando macrÃfitas aquÃticas Eichhornia crassipes (mart. Solms) e Egeria densa (Planchon.) / Treatment of effluent of organic pisciculture using macrophytes aquatics eichhornia crassipes (mart. solms) e egeria densa (planchon.)
The objective of the recent research was to evaluate the efficiency of a system of aquatic treatment being used macrophytes Eichhornia crassipes (water hyacinth) and Egeria dense (egeria) in three times of hydraulic detention, the removal of pollutants of the effluent one of organic culture of tilÃpias of the Nile (Oreochromis niloticus), and to get given o
Publicado em: 2007
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9. Nitrogen removal through nitrite in sequential batch reactor with immobilized biomass and intermittent aeration / Remoção de nitrogênio via nitrito em reator operado em bateladas seqüenciais contendo biomassa imobilizada e aeração intermitente
Um reator de leito fixo, preenchido com biomassa imobilizada em espuma de poliuretano, foi operado em bateladas seqüenciais, alimentado com substrato sintético com concentração de nitrogênio amoniacal de 125, 250, 500 e 40 mg/L. O principal objetivo da pesquisa foi verificar a possibilidade de se promover a nitrificação curta no reator submetido à ae
Publicado em: 2005
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10. Estudo do efeito poluente da vinhaça infiltrada em canal condutor de terra sobre o lençol freatico
The selected experimental area locates in São João Distillery, in the city of São João da Boa Vista, at São Paulo State, Brasil. This research developed in the transport channel, built about 13years, which all over the crop transports vinasse to the secondaries and terciaries irrigation channels, that use it in fertirrigation areas employing sprinkler i
Publicado em: 1997
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11. Nitrogen removal by tubular gel containing Nitrosomonas europaea and Paracoccus denitrificans.
A new bioreactor for the removal of nitrogen from wastewater is described which consists of a tubular polymeric gel containing Nitrosomonas europaea and Paracoccus denitrificans. The outer surface of the tube is in aerobic contact with wastewater containing ammonia, while the inside of the tube is in anaerobic contact with ethanol flowing through the tube. N
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12. Massive nitrogen loss from the Benguela upwelling system through anaerobic ammonium oxidation
In many oceanic regions, growth of phytoplankton is nitrogen-limited because fixation of N2 cannot make up for the removal of fixed inorganic nitrogen (NH+4, NO-2, and NO-3) by anaerobic microbial processes. Globally, 30-50% of the total nitrogen loss occurs in oxygen-minimum zones (OMZs) and is commonly attributed to denitrification (reduction of nitrate to
National Academy of Sciences.