Wastewaters Biological Treatment
Mostrando 1-12 de 20 artigos, teses e dissertações.
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1. Degradación de un efluente textil real asistida por Fe/PVA y materiales residuales magnéticos
ABSTRACT Organic compounds present on industrial wastes are mostly resistant to conventional biological and chemical treatments. Textile industry has presented several environmental problems mainly related to the use and management of water resources. It has a high consumption of potable and underground water in its processes. These wastewaters are one of th
Matéria (Rio J.). Publicado em: 19/07/2018
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2. EVALUATION OF AEROBIC AND ANAEROBIC BIODEGRADABILITY AND TOXICITY ASSESSMENT OF REAL PHARMACEUTICAL WASTEWATER FROM INDUSTRIAL PRODUCTION OF ANTIBIOTICS
Abstract This study evaluates aerobic and anaerobic biodegradability and toxicity of a real pharmaceutical wastewater, which focuses on antibiotics production. Zahn-Wellens and Organization for Economic Cooperation and Development (OECD) methodologies were applied in order to verify the wastewater's biodegradability and Microtox® analysis was performed for
Braz. J. Chem. Eng.. Publicado em: 2016-09
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3. Tratamentos dos efluentes gerados na produção de biodiesel
The wastewaters from biodiesel production contain as primarily wastes sodium or potassium soaps, fatty acids, glycerin, alcohol and other contaminants. In general, these waters are chemically unsuitable for release to any water body, so, it is necessary the adoption of techniques for the treatment of this effluent. In this review, electrochemical, biological
Química Nova. Publicado em: 2012
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4. TiO2 photocatalytic inactivation under simulated solar light of bacterial consortia in domestic wastewaters previously treated by UASB, duckweed and facultative ponds
In this work, TiO2 photocatalysis was used to disinfect domestic wastewaters previously treated by different biological treatment systems: Upward-flow Anaerobic Sludge Blanket (UASB), facultative pond, and duckweed pond. The microorganisms monitored were E. coli, total coliforms, Shigella species, and Salmonella species. Photocatalytic experiments were carri
Química Nova. Publicado em: 2010
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5. Performance of coupling an activated sludge reactor with heterogeneous photocatalysis (TiO2/UV) for removing the color of an industrial wastewater / Desempenho do acoplamento de um reator de lodo ativado à fotocatálise heterogênea (TiO2/UV) no descoramento de um efluente industrial
Generally, wastewaters can be easily treated by biological reactors with a good efficiency regarding organic matter removal. However, the process can be impaired in the presence of compounds that are toxic or have low biodegradability. Advanced Oxidation Processes (AOPs) may be a choice to oxidize these compounds and minimize their toxicity and/or increase b
Publicado em: 2010
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6. Cultivo de bactérias redutoras de sulfato (BRS) e sua aplicação na biorremediação de efluentes ácidos contendo metais
Sulfate Reducing Bacteria (SRB) can be used as a promise and attractive biotechnology based alternative to promote passive treatment of industrial effluents. Sulfate is reduced to sulfide while organic matter is oxidized producing carbonate and bicarbonate ions. Treatment efficiency however depends on pH and metals content of the selected effluent and also o
Publicado em: 2009
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7. Estudo da influência de compostos recalcitrantes na remoção de matéria orgânica biodegradável no tratamento de efluente de refinarias de petróleo / Studies of hard-to-degrade compounds influence on removal of biodegradable organic material from petroleum refinery wastewaters
Petroleum Refinery wastewaters (PRW) have hart-to-degrade compounds, such as: phenols, ammonia, cyanides, sulfides, oils and greases and the mono and polynuclear aromatic hydrocarbons: benzene, toluene and xylene (BTX), acenaphthene, nitrobenzene and naphtalene. It is known that the microrganisms activity can be reduced in the presence of certain substances,
Publicado em: 2008
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8. Desempenho de sistemas alagados construídos no tratamento de águas residuárias da lavagem e descascamento/despolpa dos frutos do cafeeiro / Performance of the constructed wetland systems in the treatment of the wastewaters from the washing/husking the fruits of the coffee shrub
Em vista da escassez de informações técnicas específicas sobre o tratamento de águas residuárias da lavagem e descascamento/despolpa dos frutos do cafeeiro (ARC) utilizando sistemas alagados construídos de escoamento subsuperficial (SACESF), este trabalho teve como objetivos estudar o desempenho de SACESFs, cultivados com taboa (Typha sp.) e alternant
Publicado em: 2008
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9. Métodos emergentes para aumentar a eficiência do ozônio no tratamento de águas contaminadas
Many industrial processes produce effluents with a wide variety of xenobiotic organic pollutants, which cannot be efficiently degraded by conventional biological treatments. Thus, the development of new technologies to eliminate these refractory compounds in water has become very imperative in order to assure the quality of this important resource. Ozonation
Química Nova. Publicado em: 2007-02
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10. APLICAÇÃO DO PROCESSO ELETROLÍTICO NO TRATAMENTO DE EFLUENTES DE UMA INDÚSTRIA PETROQUÍMICA / APPLICATION OF THE ELECTROLYTIC PROCESS IN THE TREATMENT OF WASTEWATER FROM A PETROCHEMICAL INDUSTRY
The petrochemical industry constitutes one of the most important industrial sectors in Brazil. The great diversity of processes of manufacture makes to increase the necessity of characterization of the effluents generated in each industrial plant. In general, the effluents presents high grade of organic matter, whose removal is necessary to expect to the tec
Publicado em: 2007
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11. Photocatalysis as a tertiary treatment for petroleum refinery wastewaters
Photocatalysis has been used as tertiary treatment for petroleum refinery wastewaters to comply with the regulatory discharge limits and to oxidize persistent compounds that had not been oxidized in the biological treatment. The wastewater is generated by the refinery and directly discharged into the Guanabara Bay (Rio de Janeiro). Although BOD removal is hi
Brazilian Journal of Chemical Engineering. Publicado em: 2006-12
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12. Slow sand filter in the treatment of leachate of the sanitary landfill of Limeira -SP / Sistema de filtração lenta no tratamento de percolado do aterro sanitario de Limeira-SP
The final disposition of solids residues is a practice that still brings serious impacts to the environment. In sanitary landfill, the residues goes through physical, chemical and biological decomposition processes, generating into a gas phase (mainly composed by CH4 and CO2) and a liquid phase known as leachate. The waste leachate is a liquid with high poll
Publicado em: 2006