Water Treatment Plant Residues
Mostrando 13-24 de 27 artigos, teses e dissertações.
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13. Produção de biogás, caracterização e aproveitamento agrícola do biofertilizante obtido na digestão da manipueira / Biogas production, characterization and agricultural use of the biofertilizer obtained in the cassava digestion
During the cassava roots processing, large quantities of waste are generated, among which stands out the manipueira, an effluent that has high polluting load, but on the other hand can be used as fertilizer and energy source. In this context, this study aimed to examine the anaerobic digestion of manipueira process, seeking to quantify the biogas produced it
Publicado em: 2008
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14. Evaluation of throwing sludge generated on a treatment water station with an upflow anaerobic sludge blank reactor (UASB). / Avaliação da disposição de lodo gerado numa estação de tratamento de água em reator anaeróbio de fluxo ascendente e manto de lodo UASB.
Water treatment stations have the purpose of providing potable water. In this process of water treatment, a variety of residuals are produced; these, historically have been discharged into water streams, increasing the water pollution. The objective of this work was to evaluate the impact of discharging residuals in a treatment station with an Upflow Anaerob
Publicado em: 2007
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15. Uso de resíduos vegetais em solos ácidos sob sistema de plantio direto
The Brazilian soils are characterized by low natural fertility, where the main chemical limitations are high acidity and low basic exchangeable cation saturation that can affect the majority of cash crop productions. Liming is the principal practice to reduce soil acidity and to increase basic cations in these soils with high pH-dependent cation exchangeable
Publicado em: 2007
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16. Modelo conceitual de seleção de tecnologias de tratamento de água para abastecimento de comunidades de pequeno porte / Conceptual selection model of technologies of water treatment for the supply of small communities
Os investimentos no setor de água potável no Brasil, apesar de significativos, ainda não apresentam os resultados esperados na melhoria da saúde e da qualidade de vida da população, especialmente nas pequenas comunidades do país. A aplicação de recursos continuará limitada enquanto não forem fortalecidos os aspectos técnicos, econômicos, institu
Publicado em: 2007
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17. Thickening and dewatering of residues produced at the Brasilia water treatment plant / Estudo do adensamento e desidratação dos resíduos gerados na ETA-Brasília
O presente trabalho enfoca o adensamento e desidratação dos resíduos da ETA-Brasília, importante unidade operacional do sistema de abastecimento de água do Distrito Federal. A ETA-Brasília está passando por intervenções de reforma e ampliação, e estudos anteriores indicaram que o tratamento dos resíduos proposto para essa estação que inclui a d
Publicado em: 2007
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18. Abordagem sistêmica do sistema de tratamento de água de Registro, São Paulo, com ênfase na avaliação do impacto do descarte dos resíduos na bacia hidrográfica do Rio Ribeira de Iguape / Sistemic approach of water treatment plant of Registro, São Paulo, focusing the evaluation of the impact of the discharge of solid residues in Ribeira de Iguape River Basin
A crescente preocupação dos órgãos de vigilância ambiental e sanitária sobre a segurança e a qualidade dos recursos hídricos tem orientado o desenvolvimento de diversas pesquisas voltadas para uma revisão do padrão tecnológico atual, quanto à gestão de resíduos gerados em estações de tratamento de água. Neste trabalho, foram avaliadas as pri
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 20/02/2006
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19. 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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20. Biossorção de cádmio por linhagens de Aspergillus sp / Biosorption of cadmium by Aspergillus sp. strains
The heavy metals represent the major industrial residues contaminant of soils, plants and animals in the ecosystems, causing a toxic effect to humans, mainly due to the wide spread distribution in environment which is intensified by industrialization process. One of most toxics heavy metals is cadmium, commonly used in industrial process, what make it an imp
Publicado em: 2006
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21. AVALIAÇÃO E MODELIZAÇÃO DA DINÂMICA DE CARBONO E NITROGÊNIO EM SOLO COM O USO DE DEJETOS DE SUÍNOS / Evaluation and simulation of soil carbon and nitrogen dynamics with the use of pig manure
The managedment of the pig manure, in the slurry or solid form (deep bedding), and how it is applied to the soil, in the surface or incorporated, must affect the dynamics of the C and the N in the soil. The objectives of this work were: 1) to evaluate the dynamics of the C and the N in soil and to evaluate the N supply to maize which were applied pig manure
Publicado em: 2005
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22. Effects of sprinkler irrigation with treated sewage effluent, rich in sodium, on the chemical and physical properties of a typic hapludults cultivated with Tifton 85 grass. / Efeito da irrigação com efluente de esgoto tratado, rico em sódio, em propriedades químicas e físicas de um argissolo vermelho distrófico cultivado com capim-Tifton 85.
The natural scarcity of freshwater in the world has been aggravated by the pollution of the watercourses. The systems of treatment of sewage generate residues, such as treated sewage effluent, that when launched into rivers, has caused environmental impact. The use of the sewage effluent has been considered an important practice to minimize the negative impa
Publicado em: 2004
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23. Hydrolysis, with subcritical water and Co2, of the starch and cellulose gifts in the residue of supercritical extration of ginger (Zingiber officinale Roscoe) : production of oligossacarids. / Hidrolise, com agua subcritica e CO2, do amido e celulose presentes no residuo de extração supercritica de gengibre (Zingiber officinale Roscoe) : produção de oligossacarideos.
Cellulose and starch contained in aromatic-plant residues, which had been subjected to supercritical CO2 extraction, were hydrolyzed with subcritical water and CO2 to obtain oligosacharides. Cellulose and starch are not soluble in supercritical CO2; therefore, they remained in the solid matrix after the supercritical extraction. The extraction step acted as
Publicado em: 2004
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24. Fração orgânica de biossólidos e efeito no estoque de carbono e qualidade da matéria orgânica de um Latossolo cultivado com eucalipto. / Organic fraction of the biosolids and effect on carbon stocks and organic matter quality in an oxisol planted with eucalyptus.
The aim of this work was to characterize the organic fraction decomposition process of the biosolids in soil, correlating to initial organic matter (OM) composition of residue. Another objective was quantify, under field conditions, the effect of alkaline biosolid on Oxisol OM, in a site planted with eucalyptus and after five years of the residue application
Publicado em: 2004