Post Treatment Of Anaerobic Effluents
Mostrando 1-12 de 18 artigos, teses e dissertações.
-
1. Tratamento AnaerÃbio de Efluentes Contendo Corantes e Estudos de PÃs-Tratamento e Ecotoxicidade / Anaerobic Treatment of dye-containing Effluents and post-tratment and Toxicity Studies.
O descarte de efluentes tÃxteis em Ãguas superficiais representa um sÃrio problema ambiental e de saÃde pÃblica devido, principalmente, à presenÃa de corantes na sua composiÃÃo, muitos dos quais sÃo potencialmente tÃxicos e carcinogÃnicos. A remoÃÃo de cor e a mineralizaÃÃo de seus subprodutos à uma das maiores dificuldades enfrentadas pelas
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 25/03/2011
-
2. Anaerobic treatment of cellulose bleach plant wastewater: chlorinated organics and genotoxicity removal
This study assessed the removal efficiency of organic matter and how it relates to the decrease of toxic and mutagenic effects when an anaerobic reactor is used to treat the bleaching effluent from two kraft pulp mills. Parameters such as COD (chemical oxygen demand), DOC (dissolved organic carbon), AOX (adsorbable organic halogen), ASL (acid soluble lignin)
Brazilian Journal of Chemical Engineering. Publicado em: 2011-12
-
3. Caracterização de contaminantes presentes em sistemas de tratamento de esgotos, por cromatografia líquida acoplada à espectrometria de massas tandem em alta resolução
This work shows results on the characterization, by liquid chromatography coupled to high resolution tandem mass spectrometry (LC-IT-TOF-MS) with electrospray ionization, of organic compounds present in raw and treated effluents from a combined sewage treatment systems (upflow anaerobic sludge blanket-trickling filter). The sewage samples were prepared by C1
Química Nova. Publicado em: 2010
-
4. Isolation and characterization of a microorganism involved on autotrophic denitrification by sulfide oxidation in a vertical fixed-bed reactor / Isolamento e caracterização de microrganismo envolvido na desnitrificação autrófica pela oxidação de sulfeto em reator vertical de leito fixo
The aim of this study was to evaluate the community involved on autotrophic denitrification by sulfide oxidation applied to the post-treatment of anaerobic effluents. The enrichment of the bacterial community and autotrophic denitrifier community was accessed in three immobilized bed reactors operated at the conditions of autotrophic reduction of nitrate, au
Publicado em: 2010
-
5. 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
-
6. Coagulation, flocculation and flotation of anaerobic reactor effluents, treating sewage with the employment of different amounts of coagulant, according to the variation in sewage turbidity throughout the day / Coagulação, floculação e flotação do efluente de reatores anaeróbios, tratando esgoto sanitário, com aplicação de diferentes dosagens de coagulante em função da variação da turbidez do esgoto afluente ao longo do dia
Este trabalho avaliou a técnica de dosagem variável de coagulante em função da variação da turbidez do esgoto afluente a sistema de pós-tratamento por flotação do efluente de reatores UASB, localizado em Campinas, SP. Utilizou-se equipamento do tipo Flotateste para a flotação em escala de laboratório, sendo fixados os parâmetros: Tmr = 15 s; Gmr
Publicado em: 2009
-
7. Investigação da toxicidade, tratabilidade e formação de subprodutos tóxicos em efluentes clorados de lagoas de estabilização com e sem pós-tratamento. / Investigation of toxicity, treatability and toxic disinfection by-products formation in chlorinated stabilization ponds effluents with and without post-treatment.
The main difficulties that the stabilization ponds for sewage treatment systems face to meet the requirements imposed by CONAMA Resolution 357/2005 can highlight the high concentrations of ammonia nitrogen, phosphorus and fecal and total coliform. When the systems use receivers water bodies Class 2 or 3 generate the need for disinfection. Among the different
Publicado em: 2008
-
8. Post-treatment of effluents from anaerobic reactor treating domestic sewage by flotation/filtration pilot system with cationic synthetic polymers / Emprego de polímeros em unidade piloto de floto-filtração como pós-tratamento de efluentes de reatores anaeróbios de leito expansível tratando esgoto sanitário
This work assessed the performance of domestic sewage treatment pilot unit consisting of anaerobic reactor followed dissolved-air flotation/filtration (DAFF). Associated ferric chloride was used polyelectrolytes. First, was tested in lab-scale dissolved-air flotation (LSDAF), low dosages of cationic synthetic polymer with high molecular weight as aiding of f
Publicado em: 2008
-
9. Condominial sewerage and treatment in septic tank followed by constructed wetlands. Case study: city of Nova Redenção - BA / Sistema condominial de coleta de esgoto e tratamento em decanto-digestor seguido de alagados construídos. Estudo de caso: município de Nova Redenção - BA
Este trabalho foi desenvolvido no município de Nova Redenção, localizado na região da Chapada Diamantina no estado da Bahia, nordeste brasileiro. Nesse município é grave o quadro de saneamento ambiental, assim como em outros do interior do Brasil. A falta de recursos financeiros e humanos é fator que dificulta a resolução desse problema. Acredita-se
Publicado em: 2008
-
10. Post-Treatment for effluents of anaerobic reactors treating domestic effluent by natural and unnatural coagulants / Pós-Tratamento de Efluentes Provenientes de Reatores Anaeróbios Tratando Esgotos Sanitários por Coagulantes Naturais e Não-Naturais
The current investigation aimed to study post-treatments for effluents of anaerobic sludge blanket reactors by using both natural (Moringa oleifera, Lam) and unnatural coagulants. For that, many jar-tests were conducted either using sewage or effluent of a lab-scale UASB (upflow anaerobic sludge blanket) reactor. Many dosages of natural (Moringa oleifera) an
Publicado em: 2006
-
11. Coagulation/precipitation of effluents from anaerobic expanded bed reactor and activated sludge system preceded by UASB reactor, with particle removal by sedimentation or flotation / Coagulação/precipitação de efluentes de reator anaeróbio de leito expandido e de sistema de lodo ativado precedido de reator UASB, com remoção de partículas por sedimentação ou flotação
The anaerobic reactors of modern conception (e.g., UASB and RALEx) remove from 65 to 75% of sanitary wastewater organic matter with relatively low construction, operation, and maintenance costs, in comparison with conventional aerobic processes. Nevertheless, that reactors are usually little efficient in nutrient removal and their effluents may present relat
Publicado em: 2006
-
12. Avaliação da microfiltração tangencial como alternativa de tratamento avançado de efluente gerado em sistema de tratamento de esgoto sanitário constituído de reator UASB (Upflow Anaerobic Sludge Blanket) seguido de tanque de aeração / The evaluation of crossflow microfiltration as an alternative for advanced treatment of effluent generated in a system of sewage treatment composed by a UASB (Upflow Anaerobic Sludge Blanket) reactor followed by an aeration tank
The proposal of this research was to evaluate the crossflow microfiltration as an alternative for an advanced treatment of effluent generated in a system of sewage treatment composed by a UASB (Upflow Anaerobic Sludge Blanket) reactor followed by an aeration tank. This work aimed to evaluate the membranes physical cleaning methods (backwashing with compresse
Publicado em: 2006