Disinfection With Chlorine
Mostrando 13-24 de 72 artigos, teses e dissertações.
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13. Formação de aldeídos e trialometanos da desinfecção por ozonização, cloração e ozonização/cloração de efluente de tratamento anaeróbio de esgoto sanitário / Aldehydes and trihalomethanes formation from desinfection in ozonization, chloration and, ozonation/chloration in anaerobic effluent from sanitary wastewater
The present work was mostly carried out in Brazil. However, aiming to enhance the research, a six-month data collection was performed at the Wageningen University - the Netherlands. The step carried out in Brazil proposed: to study the formation of by-products (aldehydes and trihalomethanes) from the disinfection of an anaerobic treatment wastewater effluent
Publicado em: 2008
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14. Estudo dos parâmetros do decaimento do cloro residual em sistema de distribuição de água tratada considerando vazamento / Study of the residual decay parameters in water distribution systems with leakage
The use of chlorine as disinfectant in water supply systems has been a common practice adopted by the water industry. Introduced during the treatment process, chlorine participates in several reactions with compounds of organic and inorganic nature inside the pipes. Such reactions that occur in the bulk and the wall of the pipes are responsible for chlorine
Publicado em: 2008
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15. 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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16. Estudos de formação e remoção de subprodutos de desinfecção (SPDS) em aguas contendo acidos humicols quando sumetidas a dioxido de cloro / Studies of formation and remotion of disinfection by products (DBP), generated by the oxidation of solutions containing humic substances throught the use of chlorine dioxide
The objective of the present research was to analyze the formation of disinfection by products (DPB), generated by the oxidation of solutions containing humic substances with the addition of bromide ions through the use of chlorine dioxide, isolated or associated with free chlorine in different concentrations and reaction times. The technique of gaseous chro
Publicado em: 2007
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17. Ecotoxicological evaluation of wastewater secondary effluent disinfected with peracetic acid, chlorine, ozone and ultraviolet radiation / Avaliação ecotoxicológica de efluente de tratamento secundário de esgoto sanitário após desinfecção com ácido peracético, cloro, ozônio e radiação ultravioleta
Neste estudo foi avaliado o potencial tóxico de diferentes desinfetantes (cloro, ácido peracético, radiação ultravioleta e ozônio) utilizados na desinfecção de esgotos sanitários. Para tanto, foram realizados ensaios de desinfecção (em diversas concentrações e tempos de contato) com o esgoto doméstico originário da estação de tratamento de e
Publicado em: 2007
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18. Avaliação de métodos para desinfecção de água, empregando cloro, ácido peracético, ozônio e o processo de desinfecção combinado ozônio/cloro / Methods evaluation for water disinfection using chlorine, peracetic acid, ozone and the ozone/chlorine combined disinfection process
This is the result of a comparative disinfection study, performed in similar experimental conditions, among hypochlorite of sodium, peracetic acid, ozone and the ozone/chlorine sequential disinfection process for waters of study with low color (<5 uH) and high color (>100 uH) features. The disinfectants performance was evaluated according to the inactivation
Publicado em: 2006
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19. Evaluation of a continuous flow disinfection system with water solar disinfection, chlorine and ultraviolet radiation / Avaliação de um sistema de fluxo continuo de desinfecção de agua por radiação solar, cloração e radiação ultra violeta
O presente artigo consiste no estudo do emprego de um sistema de aquisição de dados (DAQ) para o controle dos equipamentos de um sistema de desinfecção, conjugando desinfecção de água por radiação solar (SODIS), em fluxo contínuo, radiação ultravioleta e cloração. O uso de energia solar para desinfecção de água (SODIS) tem sido aplicado em p
Publicado em: 2006
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20. COOLING WATER TREATMENT USING HYDROGEN PEROXIDE / TRATAMENTO DE ÁGUAS DE RESFRIAMENTO COM PERÓXIDO DE HIDROGÊNIO
Cooling water treatment generally is made with the addition of chlorine, although it´s application has some disadvantages. There is an active development in Brazil and other countries to use alternative chemical disinfectants in place of chlorine, such as hydrogen peroxide, a powerful oxidant which is known for its high biocidal efficiency. The aim of this
Publicado em: 2006
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21. Disinfection of municipal wastewater with ozone for agriultural use / Desinfecção de efluentes de ETE com ozonio para uso agricola
Disinfection of wastewater, prior to its use in agriculture, is a treatment process indispensable to the protection of public health. In this context, ozone constitutes an alternative disinfectant to chlorine since it is very effective against a wide variety of pathogenic organisms and minimizes the formation of trihalomethanes. In this hesis, the effectiven
Publicado em: 2005
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22. Avaliação da eficacia de saneantes frente a bacterias acido-termorresistentes isoladas do processamento de sucos de laranja. / Evaluation of the effectiveness of saneantes front the isolated bacteria acid-termorresistentes of the orange juice processing.
Bacteria from the genus alicyclobacillus are sporulated acidothermophilic heat resistant microorganisms (ATSB). These bacteria have the ability to survive the usual pasteurization process applied in the production of concentrated orange juice, and may also grow in the reconstituted juices, being a constant concern of the orange juice industry all over the wo
Publicado em: 2004
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23. Aplicação da fotolise e fotocatalise heterogenea na desinfecção de aguas contaminadas com E.coli
Chlorine is the most utilized disinfectant in the world, which application shows some advantages as high efficiency and low cost. The discovery of carcinogenics subproducts in the water, as THMs (trihalometanes) result of the reaction of chlorine free with organic matter in the water, originated several research works to find alternative methods of disinfect
Publicado em: 2001
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24. Desinfecção de agua para abastecimento com radiação ultravioleta : eficiencia bactericida e uma analise economica e energetica
Ultraviolet radiation has been accepted as an altemative to chlorination for disinfection of water. The main subjects in this work can be summarized as follows: microorganism inactivation survey; comparative economical analysis between uv system and chlorine disinfection;comparative electrical energy consumption between them. A batch reactor, equipped with u
Publicado em: 1997