Residual Cod
Mostrando 13-24 de 26 artigos, teses e dissertações.
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13. Effects of the accepting water treatment plants (WTP) residuals at wastewater treatment plant (WWTP) using SBR activated-sludge process with extended aeration in the city of Juquitiba, SP. / Efeitos do recebimento do lodo da estação de tratamento de água pelo sistema de tratamento de esgoto por lodo ativado em bateladas e aeração prolongada do município de Juquitiba - SP.
There are different technical engineering solutions for the treatment and final disposal of water treatment plants (WTPs) residuals. Discharge of WTP residual to a wastewater treatment plant (WWTP) is a technical solution in evidence. Therefore, the purpose of this study was to evaluate the capacity of the WWTP using sequencing batch reactor (SBR) activated-
Publicado em: 2007
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14. 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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15. Emprego do reagente de fenton como agente coagulante na remoção de substâncias húmicas de água por meio da flotação por ar dissolvido e filtração
O reagente de Fenton foi empregado como agente coagulante no tratamento de água com cor verdadeira elevada (100 ± 5 uH) causada pela introdução de substâncias húmicas extraídas de turfa, empregando-se a flotação por ar dissolvido. Otimizou-se o par de valores dosagem de coagulante x pH de coagulação para posterior construção dos diagramas de coa
Engenharia Sanitaria e Ambiental. Publicado em: 2006-09
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16. Uso de ozônio como pré e pós-tratamento de efluentes da indústria de celulose kraft branqueada / Pre and post ozone treatment of bleached kraft pulp mill effluents
This work evaluated the combination of ozone and activated sludge for treatment of bleached kraft pulp effluents. Ozonation was done before and after biological treatment. First the influence of pH, temperature and hydrogen peroxide dose on ozonation was assessed in order to optimize treatment efficiency, which was evaluated in terms of COD, BOD5, lignin, bi
Publicado em: 2006
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17. Removal of suspension solids of a paper industry effluent by electroflotation / Remoção de solidos em suspensão de efluente da industria de papel por eletroflotação
Este trabalho teve como escopo a aplicação da eletroflotação no tratamento de efluentes de uma indústria de papel e a verificação de sua viabilidade técnica e econômica. Para isto, compararam-se eletrodos de alumínio e ferro, sendo este com densidade de corrente de 211 A/m2 e aquele com 169 A/m2 em um reator de 20 L e monitorou-se o comportamento d
Publicado em: 2006
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18. System of ozonation in effluent of anaerobic reactor: study of the hydrodynamic and of oscillates answers of COD / Sistema de ozonização em esgoto de reator anaeróbio: estudo da hidrodinâmica e das respostas oscilantes de DQO
O presente trabalho considera o problema de oxidação de matéria orgânica e inorgânica em esgoto sanitário através da ozonização, buscando aprofundar o conhecimento nos aspectos dúbios levantados em pesquisas conduzidas no Departamento de Hidráulica e Saneamento da EESC (Escola de Engenharia de São Carlos) na USP (Universidade de São Paulo) e tam
Publicado em: 2006
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19. Avaliação do uso da banda de rodagem de pneus inservíveis triturada como suporte ao desenvolvimento de biofilmes em um reator anaeróbio de leito expansível / Granulated tread of scrap tires as support for the development of biofilms in an expanded bed anaerobic reactor
The present research had as objective the assessment of granulated tread of scrap tires (GTST) as support for the development of biofilms in an expanded bed anaerobic reactor (EBAR), in full scale, with a total volume of 32m3, employed for wastewater treatment. The use of this material as support was presented as an innovating proposal, with a high applicati
Publicado em: 2005
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20. Enhancement of the performance of an anaerobic sequencing batch reactor treating low-strength wastewater through implementation of a variable stirring rate program
This work focuses on enhancement of the performance of an anaerobic sequencing batch reactor with a six-vertical-blade-disk-turbine impeller, containing granulated biomass treating low-strength synthetic wastewater, through a study of the feasibility of implementing a variable stirring rate program. The reactor was operated at 30ºC and a six-hour cycle was
Brazilian Journal of Chemical Engineering. Publicado em: 2004-09
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21. Formation of soluble microbial products (SMP) in anaerobic reactors during stress conditions
Anaerobic wastewater treatment has many advantages over aerobic treatment, however, one factor that limits its application is the relatively high concentration of organic material in the effluent. Characterization of both aerobic and anaerobic effluents has shown that the majority of the residual chemical oxygen demand (COD) is due to soluble microbial produ
Publicado em: 2004
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22. Evaluation of the departure of stream beds cultivated in the residuary water treatment of the banana candy processing. / Avaliação da partida de leitos cultivados no tratamento de agua residuaria do processamento de doce de banana.
The purpose of this research was to test the performance of a constructed macrophytes wetland in the reduction of organic material and solids clearance of wastewater characteristic of the banana candy processing. There are few reports about the use of constructed wetlands in the treatment of wastewater from food processing and none of them refers to its kind
Publicado em: 2004
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23. Comportamento de reator anaeróbio operado em batelada seqüencial, contendo biomassa imobilizada e submetido a aumento progressivo da concentração de substrato de fácil degradação / Behavior of the anaerobic sequencing batch reactor containing immobilized biomass and submitted to a progressive increasing of the concetration of easy degradation substrate
The main objectives of this study were to evaluate the performance of the anaerobic sequencing batch reactor when subjected to a progressive increasing of the influent glucose concentration and estimate the kinetic parameters of glucoses degradation. Initially the reactor was operated with 8-hour cycles, treating glucose at concentrations of 500, 1000 and 20
Publicado em: 2003
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24. Avaliação de desempenho do reator anaeróbio em batelada seqüencial (ASBR), contendo biomassa imobilizada em pedra pome, para tratamento de esgoto sanitário / Performance evaluation of a stirred anaerobic sequencing batch reactor containing immobilized biomass in pumice stone for wastewater treatment
The anaerobic sequencing batch reactors (ASBR) with immobilized biomass, that are under development at Mauá Institute of Technology and at São Carlos Engineering School, presented good performance in the wastewater treatment. Recent researches are trying to improve this reactor design and operation. The choice of the support material is one of the importan
Publicado em: 2003