Coagulation Flocculation
Mostrando 25-36 de 55 artigos, teses e dissertações.
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25. Tratamento de efluentes da indústria de processamento de carnes utilizando flotação por ar dissolvido e processos de oxidação avançada
The use of wastewater treatment processes with high efficiency of organic matter removal is considered one of the most important steps to achieve lower pollution loads in meat processing industries. As a primary treatment, dissolved air flotation processes (DAF) using coagulation-flocculation are generally applied. Additionally, the utilization of high effic
Publicado em: 2009
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26. Estudo das micropropriedades de resíduos sólidos gerados nos decantadores de estações de tratamento de água
The conventional or life-cycle system for water treatment (chemical coagulation, flocculation, sedimentation, filtration, disinfection, fluoridation and pH correction) employed in most water treatment plants (WTP) in Brazil turns water unfit for human consumption (spring water and surface water) into a product that is in accordance with the drinking water gu
Publicado em: 2009
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27. Avaliação das técnicas de eletrocoagulação e eletroflotação na recuperação de efluentes de lavagem de veículos
Este trabalho teve como escopo a aplicação das técnicas de eletrocoagulação (EC) e eletroflotação (EF) no tratamento de efluente proveniente de lavagem de veículos. Para isto, utilizou um planejamento experimental do tipo composto central para otimizar as melhores condições de operação: pH inicial, tempo de eletrólise e densidade de corrente apl
Publicado em: 2009
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28. Lixiviado de aterros sanitários brasileiros: estudo de remoção do nitrogênio amoniacal por processo de arraste com ar ("stripping") / Sanitary landfill leachate in Brazil: evaluation of ammonia nitrogen removal by air stripping process
Sanitary landfills are considered as the most appropriate way for final disposal of municipal solid wastes in Brazil, in the technical and economical point of view. Open dumps have been progressively substituted by well engineered and operated landfills. However, landfills still present environmental risks due to the gas emission and leachate production. Gas
Publicado em: 2009
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29. 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
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30. Otimização do sistema de tratamento de efluente de indústria de processamento de carnes e derivados / OPTIMIZATION OF WASTEWATER TREATMENT SYSTEM OF PROCESSING MEAT AND MEAT STUFF INDUSTRY
The meat processing industry creates large amount of liquid effluent with high pollutant concentration. Previously to its delivering to the environment it is proclaimed it should be treated and brought to suitable levels for pollutant reduction, according to environmental legal requirements. Such effluents, under several variations on meat and derivates dema
Publicado em: 2008
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31. Use of Powdered Activated Carbon to Remove the Herbicides Diuron and Hexazinone from Surface Water / Uso de carvão ativado pulverizado para remoção dos herbicidas diuron e hexazinona de água superficial
The Pardo River, the main source of surface water in the northeastern region of the state of São Paulo, flows through the worlds largest sugar and alcohol production pole, which causes it to become polluted with pesticides such as diuron and hexazinone that are used in the cultivation of sugarcane. In this study, the waters of the Pardo River were monitored
Publicado em: 2008
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32. Dissolved air Flotation , for clarifying water with low turbidity using aluminum sulphate and Moringa oleifera seeds as coagulants / Flotação por ar dissolvido na clarificação de águas com baixa turbidez utilizando sulfato de alumínio e sementes de Moringa oleifera como coagulantes
This work aims to investigate the process of Dissolved air Flotation (DAF) for clarifying water samples with low turbidity using aluminum sulphate and Moringa oleifera seeds as coagulants. The experimental procedure was carried out in a bench scale flotation unit. The influences on the pre-treatment conditions (coagulant dosage and flocculation time) and flo
Publicado em: 2008
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33. 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
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34. Application of electroflocculation technique for the tannery effluent treatment / AplicaÃÃo da tÃcnica de eletro-floculaÃÃo no tratamento de efluentes de curtume
In the present work has been studied the electro-flocculation efficiency on the reduction of organic and inorganic material concentrations such as Chemical Oxygen Demand (COD), turbidity, total solids and metal, mainly chromium, on an untreated tannery effluent using a pair of electrodes. For this purpose, a lab scale Electro-Flocculation (EF) reactor was co
Publicado em: 2008
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35. CaracterizaÃÃo das Ãguas e efluentes em lavanderias de jeans no agreste pernambucano
The Productive Local Arrangement (PLA) of confections of Pernambuco is located in a region of water limitations, produced around 15 % of the pieces of jeans of the country, where it is also are carried out the activity of washing and dyeing. The demand for water is around 50 to 300 thousand liters month, caught in the Capibaribe river, the unique source of w
Publicado em: 2008
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36. Physical-chemical effluent treatment of Campo Grande-MSs of recycling of packings plastics / Tratamento Físico-Químico de efluente de uma usina de reciclagem de plástico de Campo Grande-MS
A fim de regular os usos, a qualidade ambiental e sanitária da água foram criadas leis que visam garantir a qualidade por meio de monitoramento dos parâmetros de quaidade para fins de potabilidade, como a Portaria Federal n 518, do Ministério da Saúde. Para atingir os padrões de qualidade de água e efluentes, devem utilizados sistemas de tratamento es
Publicado em: 2008