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Doctoral Thesis
DOI
https://doi.org/10.11606/T.87.2009.tde-11022010-105753
Document
Author
Full name
Ivy dos Santos Oliveira
Institute/School/College
Knowledge Area
Date of Defense
Published
São Paulo, 2009
Supervisor
Committee
Pradella, Jose Geraldo da Cruz (President)
Izário Filho, Hélcio José
Piccoli, Rosane Aparecida Moniz
Teixeira, Antonio Carlos Silva Costa
Tonso, Aldo
Title in Portuguese
Integração do tratamento microbiológico com células imobilizadas e tecnologias emergentes (Processos Oxidativos Avançados) para o tratamento de efluentes gerados na indústria têxtil.
Keywords in Portuguese
Células imobilizadas
Efluentes (Tratamento)
Indústria têxtil
Microbiologia industrial (Tratamento)
Processos oxidativos avançados
Reator de leito fluidizado
Zeólita
Abstract in Portuguese
A integração de diferentes processos de tratamento na degradação de efluente têxtil foi avaliada utilizando-se a técnica de precipitação, processos oxidativos avançados (POA) e tratamento biológico aeróbio. Os POAs (Ozônio/UV e reagente de Fenton/UV) foram avaliados com experimentos em bateladas de acordo com um planejamento fatorial L18 (Método Tagushi) em função da vazão de ozônio, concentração de reagente Fenton, radiação UV, pH e temperatura. No tratamento microbiológico por processo contínuo, foi utilizado um reator de leito fluidizado com células imobilizadas de zeólitas e avaliados parâmetros como pré-tratamento com POAs, vazão de aeração, taxa de diluição. Concluiu-se que com o pré-tratamento físico-químico obteve-se resultados bastante satisfatórios na redução da DQO e COT, porém gerou uma quantidade desnecessária de lodo. A integração lodo ativado/Reagente Fenton mostrou-se bastante adequada, principalmente na remoção da cor e turbidez; a variedade e freqüência dos microrganismos observados durante o monitoramento biológico foram condizentes com os sistemas de lodo ativado operando eficientemente e o emprego de zeólitas como suporte mostrou-se significativo, alcançando 63,3 % de imobilização do microrganismo no suporte.
Title in English
Integration of microbiological treatment with immobilized cells and emerging (Advanced Oxidation Process) technologies for wastewater treatment generated in the textile industry.
Keywords in English
Advanced oxidative processes
Immobilized cells
Industrial Microbiology (Treatment)
Reactor of bed fluidized
Textile industry
Wastewater (treatment)
Zeolite
Abstract in English
The integration of different treatment processes in the degradation of textile wastewater was evaluated using precipitation technique, advanced oxidation processes (AOP) and aerobic biological treatment. AOPs (Ozone/UV and reagent of Fenton/UV) were evaluated in batch experiments according to a factorial planning L18 (Tagushi Method) in function of the flow of ozone, concentration of reagent Fenton, UV radiation, pH and temperature. In the microbiological treatment for continuous process, a reactor of bed fluidized was used with immobilized cells of zeolites some parameters were evaluated such as pre-treatment with AOPs, aeration flow, diluition rate. Satisfactory results were obtained with the physical-chemistry pre-treatment in the reduction of COD and TOC, however it generated an unnecessary amount of sludge. The integration activated sludge/Reagent Fenton was shown quite appropriate, mainly in the removal of the color and turbidity; the variety and frequency of the microorganisms observed during the biological monitorament were suitable with the systems of activated sludge operating efficiently and the use of zeolites as support was shown significant, reaching 63,3 % of immobilization of the microorganism in the support.
 
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Publishing Date
2010-04-01
 
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