AnÃlise de EficiÃncia e Confiabilidade em Sistemas de Baixo Custo de Tratamento de Esgotos do Tipo Lagoas de EstabilizaÃÃo
Autor(a) principal: | |
---|---|
Data de Publicação: | 2011 |
Tipo de documento: | Dissertação |
Idioma: | por |
Título da fonte: | Biblioteca Digital de Teses e Dissertações da UFC |
Texto Completo: | http://www.teses.ufc.br/tde_busca/arquivo.php?codArquivo=9298 |
Resumo: | The present work aimed to analyze the performance, reliability and operational situation of stabilization ponds located in Fortaleza and its Metropolitan Region. The reliability was assessed by using the Coefficient of Reliability (COR) and the performance was assessed by using descriptive statistics, removal efficiency and percentage of compliance with the discharge limits. Finally, operational diagnostics of the Wastewater Treatment Plants (WTP) was carried out from field inspections. Eight stabilization ponds were selected and the analyzed data corresponded to the period from January 2007 to March 2011. The most important parameters were studied and analyzed over the period assessed: pH, COD, filtered COD, BOD, filtered BOD, DO, TSS, settleable solids, ammonia, total coliforms and E.coli. Shape verification of the frequency distribution for the treated sewage indicators BOD, COD, TSS, ammonia and E. coli was conducted in two stages. This verification consisted of adherence tests to normal, lognormal, gamma and exponential tests of compliance with normal distributions by using the chi-square (χ2) and Kolmogorov-Smirnov tests. The graphical test "Probability - Probability Plot" was used in some cases to verify the theoretical distribution that best fit the sample data. The computer programs used to perform the tests were Statistica 7.0 and Statgraphics Centurion XV. WTPs performances with regard to the parameters pH, filtered COD and filtered BOD was not very significant. However, the parameters DO, TSS, ammonia and E. coli showed a clear superiority of the type ANA + FAC + MAT. Regarding efficiency, the best results were verified for this configuration, which, for having a higher number of treatment units, also showed a higher stability. In the operational diagnostics, the most relevant aspects observed may indicate that the ponds were silted or needed to have the sludge dredged, which interfered in the TDH or they would be organically overloaded, which directly impaired the reliability, efficiency and performance of the studied WTPs. The adherence tests showed that most of the evaluated parameters followed a lognormal distribution, especially those with higher amounts of data. For all parameters, there was a great variability in terms of CV and COR, and there was not an evident correlation between the values of COR and treatment types. In relation to the discharge limits, there was also a superior performance of the ANA + FAC + MAT treatment type and a low non expected performance for the FAC type, showing a poor treatment when compared to other types of stabilization ponds. |
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Biblioteca Digital de Teses e Dissertações da UFC |
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info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/masterThesisAnÃlise de EficiÃncia e Confiabilidade em Sistemas de Baixo Custo de Tratamento de Esgotos do Tipo Lagoas de EstabilizaÃÃoAnalysis of Efficiency and Reliability Systems Low Cost Wastewater Treatment of Type Stabilization Ponds2011-11-11Andrà Bezerra dos Santos50211480363http://lattes.cnpq.br/3626519258208111Vitor Moreira da Rocha Ponte72746599368http://lattes.cnpq.br/9233399003631083Alexandre Colzi Lopes64150208387http://lattes.cnpq.br/833816951744009285722758353http://lattes.cnpq.br/4240231993588518Ana GlÃucia MagalhÃes SilveiraUniversidade Federal do CearÃPrograma de PÃs-GraduaÃÃo em Engenharia CivilUFCBRreliability, efficiency, performance, wastewater treatment plants, release standardsSaneamentoÃguas residuais - PurificaÃÃoENGENHARIA CIVILThe present work aimed to analyze the performance, reliability and operational situation of stabilization ponds located in Fortaleza and its Metropolitan Region. The reliability was assessed by using the Coefficient of Reliability (COR) and the performance was assessed by using descriptive statistics, removal efficiency and percentage of compliance with the discharge limits. Finally, operational diagnostics of the Wastewater Treatment Plants (WTP) was carried out from field inspections. Eight stabilization ponds were selected and the analyzed data corresponded to the period from January 2007 to March 2011. The most important parameters were studied and analyzed over the period assessed: pH, COD, filtered COD, BOD, filtered BOD, DO, TSS, settleable solids, ammonia, total coliforms and E.coli. Shape verification of the frequency distribution for the treated sewage indicators BOD, COD, TSS, ammonia and E. coli was conducted in two stages. This verification consisted of adherence tests to normal, lognormal, gamma and exponential tests of compliance with normal distributions by using the chi-square (χ2) and Kolmogorov-Smirnov tests. The graphical test "Probability - Probability Plot" was used in some cases to verify the theoretical distribution that best fit the sample data. The computer programs used to perform the tests were Statistica 7.0 and Statgraphics Centurion XV. WTPs performances with regard to the parameters pH, filtered COD and filtered BOD was not very significant. However, the parameters DO, TSS, ammonia and E. coli showed a clear superiority of the type ANA + FAC + MAT. Regarding efficiency, the best results were verified for this configuration, which, for having a higher number of treatment units, also showed a higher stability. In the operational diagnostics, the most relevant aspects observed may indicate that the ponds were silted or needed to have the sludge dredged, which interfered in the TDH or they would be organically overloaded, which directly impaired the reliability, efficiency and performance of the studied WTPs. The adherence tests showed that most of the evaluated parameters followed a lognormal distribution, especially those with higher amounts of data. For all parameters, there was a great variability in terms of CV and COR, and there was not an evident correlation between the values of COR and treatment types. In relation to the discharge limits, there was also a superior performance of the ANA + FAC + MAT treatment type and a low non expected performance for the FAC type, showing a poor treatment when compared to other types of stabilization ponds.A presente pesquisa teve como objetivo geral realizar uma anÃlise de desempenho, confiabilidade e situaÃÃo operacional de lagoas de estabilizaÃÃo localizadas em Fortaleza e na sua RegiÃo Metropolitana. A confiabilidade foi avaliada por meio do Coeficiente de Confiabilidade (CDC) e o desempenho foi avaliado por meio de estatÃstica descritiva, eficiÃncia de remoÃÃo e percentual de atendimento aos padrÃes ambientais de lanÃamento vigentes. Por fim, realizou-se um diagnÃstico operacional das EstaÃÃes de Tratamento de Esgotos (ETEÂs) a partir de inspeÃÃes de campo. Foram selecionadas oito lagoas de estabilizaÃÃo e os dados analisados corresponderam ao perÃodo de janeiro de 2007 a marÃo de 2011. Optou-se por estudar os parÃmetros de maior relevÃncia e mais analisados no perÃodo avaliado: pH, DQO, DQO filtrada, DBO, DBO filtrada, OD, SST, sÃlidos sedimentÃveis, amÃnia, coliformes totais e E.coli. A verificaÃÃo da forma da distribuiÃÃo de frequÃncia dos indicadores DBO, DQO, SST, AmÃnia e E.coli efluentes das ETEs foi efetuada em duas etapas. Esta verificaÃÃo consistiu de testes de aderÃncia Ãs distribuiÃÃes normal, lognormal, gama e exponencial, atravÃs dos testes do Qui-quadrado (χ2) e Kolmogorov-Smirnov. O teste grÃfico âProbability - Probability Plotâ foi utilizado, em alguns casos, para verificaÃÃo da distribuiÃÃo teÃrica que melhor se ajustava aos dados amostrais. Os âsoftwaresâ utilizados para execuÃÃo dos testes foram o Statistica 7.0 e Statgraphics Centurion XV. O desempenho das ETEs nos parÃmetros pH, DQO filtrada e DBO filtrada nÃo foi muito significativo, entretanto nos parÃmetros OD, SST, amÃnia e E.coli observou-se uma clara superioridade da tipologia ANA+FAC+MAT. Em relaÃÃo à eficiÃncia, verificou-se tambÃm os melhores resultados para esta tipologia, que por apresentar um maior nÃmero de unidades de tratamento tambÃm apresentou maior estabilidade. No diagnÃstico operacional, os aspectos mais relevantes observados podem indicar que as lagoas estavam assoreadas ou necessitavam de dragagem do lodo, interferindo no TDH ou ainda estariam sobrecarregadas organicamente, prejudicando diretamente a confiabilidade, a eficiÃncia e o desempenho das ETEs estudadas. Os testes de aderÃncia mostraram que a maioria dos parÃmetros avaliados seguiu uma distribuiÃÃo lognormal, em especial os que apresentavam maior quantidade de dados. Para todos os parÃmetros, foi grande a variabilidade dos coeficientes de variaÃÃo e de confiabilidade das ETEs, nÃo sendo evidenciada correlaÃÃo entre os valores de CDC e as modalidades de tratamento. Quanto ao percentual de atendimento à legislaÃÃo, verificou-se tambÃm um desempenho superior da modalidade ANA+FAC+MAT e um desempenho aquÃm do esperado para a tipologia FAC, demonstrando um tratamento deficiente se comparado Ãs outras modalidades de lagoas de estabilizaÃÃo.nÃo hÃhttp://www.teses.ufc.br/tde_busca/arquivo.php?codArquivo=9298application/pdfinfo:eu-repo/semantics/openAccessporreponame:Biblioteca Digital de Teses e Dissertações da UFCinstname:Universidade Federal do Cearáinstacron:UFC2019-01-21T11:22:26Zmail@mail.com - |
dc.title.pt.fl_str_mv |
AnÃlise de EficiÃncia e Confiabilidade em Sistemas de Baixo Custo de Tratamento de Esgotos do Tipo Lagoas de EstabilizaÃÃo |
dc.title.alternative..fl_str_mv |
Analysis of Efficiency and Reliability Systems Low Cost Wastewater Treatment of Type Stabilization Ponds |
title |
AnÃlise de EficiÃncia e Confiabilidade em Sistemas de Baixo Custo de Tratamento de Esgotos do Tipo Lagoas de EstabilizaÃÃo |
spellingShingle |
AnÃlise de EficiÃncia e Confiabilidade em Sistemas de Baixo Custo de Tratamento de Esgotos do Tipo Lagoas de EstabilizaÃÃo Ana GlÃucia MagalhÃes Silveira Saneamento Ãguas residuais - PurificaÃÃo ENGENHARIA CIVIL |
title_short |
AnÃlise de EficiÃncia e Confiabilidade em Sistemas de Baixo Custo de Tratamento de Esgotos do Tipo Lagoas de EstabilizaÃÃo |
title_full |
AnÃlise de EficiÃncia e Confiabilidade em Sistemas de Baixo Custo de Tratamento de Esgotos do Tipo Lagoas de EstabilizaÃÃo |
title_fullStr |
AnÃlise de EficiÃncia e Confiabilidade em Sistemas de Baixo Custo de Tratamento de Esgotos do Tipo Lagoas de EstabilizaÃÃo |
title_full_unstemmed |
AnÃlise de EficiÃncia e Confiabilidade em Sistemas de Baixo Custo de Tratamento de Esgotos do Tipo Lagoas de EstabilizaÃÃo |
title_sort |
AnÃlise de EficiÃncia e Confiabilidade em Sistemas de Baixo Custo de Tratamento de Esgotos do Tipo Lagoas de EstabilizaÃÃo |
author |
Ana GlÃucia MagalhÃes Silveira |
author_facet |
Ana GlÃucia MagalhÃes Silveira |
author_role |
author |
dc.contributor.advisor1.fl_str_mv |
Andrà Bezerra dos Santos |
dc.contributor.advisor1ID.fl_str_mv |
50211480363 |
dc.contributor.advisor1Lattes.fl_str_mv |
http://lattes.cnpq.br/3626519258208111 |
dc.contributor.referee1.fl_str_mv |
Vitor Moreira da Rocha Ponte |
dc.contributor.referee1ID.fl_str_mv |
72746599368 |
dc.contributor.referee1Lattes.fl_str_mv |
http://lattes.cnpq.br/9233399003631083 |
dc.contributor.referee2.fl_str_mv |
Alexandre Colzi Lopes |
dc.contributor.referee2ID.fl_str_mv |
64150208387 |
dc.contributor.referee2Lattes.fl_str_mv |
http://lattes.cnpq.br/8338169517440092 |
dc.contributor.authorID.fl_str_mv |
85722758353 |
dc.contributor.authorLattes.fl_str_mv |
http://lattes.cnpq.br/4240231993588518 |
dc.contributor.author.fl_str_mv |
Ana GlÃucia MagalhÃes Silveira |
contributor_str_mv |
Andrà Bezerra dos Santos Vitor Moreira da Rocha Ponte Alexandre Colzi Lopes |
dc.subject.por.fl_str_mv |
Saneamento Ãguas residuais - PurificaÃÃo |
topic |
Saneamento Ãguas residuais - PurificaÃÃo ENGENHARIA CIVIL |
dc.subject.cnpq.fl_str_mv |
ENGENHARIA CIVIL |
dc.description.sponsorship.fl_txt_mv |
nÃo hà |
dc.description.abstract..fl_txt_mv |
The present work aimed to analyze the performance, reliability and operational situation of stabilization ponds located in Fortaleza and its Metropolitan Region. The reliability was assessed by using the Coefficient of Reliability (COR) and the performance was assessed by using descriptive statistics, removal efficiency and percentage of compliance with the discharge limits. Finally, operational diagnostics of the Wastewater Treatment Plants (WTP) was carried out from field inspections. Eight stabilization ponds were selected and the analyzed data corresponded to the period from January 2007 to March 2011. The most important parameters were studied and analyzed over the period assessed: pH, COD, filtered COD, BOD, filtered BOD, DO, TSS, settleable solids, ammonia, total coliforms and E.coli. Shape verification of the frequency distribution for the treated sewage indicators BOD, COD, TSS, ammonia and E. coli was conducted in two stages. This verification consisted of adherence tests to normal, lognormal, gamma and exponential tests of compliance with normal distributions by using the chi-square (χ2) and Kolmogorov-Smirnov tests. The graphical test "Probability - Probability Plot" was used in some cases to verify the theoretical distribution that best fit the sample data. The computer programs used to perform the tests were Statistica 7.0 and Statgraphics Centurion XV. WTPs performances with regard to the parameters pH, filtered COD and filtered BOD was not very significant. However, the parameters DO, TSS, ammonia and E. coli showed a clear superiority of the type ANA + FAC + MAT. Regarding efficiency, the best results were verified for this configuration, which, for having a higher number of treatment units, also showed a higher stability. In the operational diagnostics, the most relevant aspects observed may indicate that the ponds were silted or needed to have the sludge dredged, which interfered in the TDH or they would be organically overloaded, which directly impaired the reliability, efficiency and performance of the studied WTPs. The adherence tests showed that most of the evaluated parameters followed a lognormal distribution, especially those with higher amounts of data. For all parameters, there was a great variability in terms of CV and COR, and there was not an evident correlation between the values of COR and treatment types. In relation to the discharge limits, there was also a superior performance of the ANA + FAC + MAT treatment type and a low non expected performance for the FAC type, showing a poor treatment when compared to other types of stabilization ponds. |
dc.description.abstract.por.fl_txt_mv |
A presente pesquisa teve como objetivo geral realizar uma anÃlise de desempenho, confiabilidade e situaÃÃo operacional de lagoas de estabilizaÃÃo localizadas em Fortaleza e na sua RegiÃo Metropolitana. A confiabilidade foi avaliada por meio do Coeficiente de Confiabilidade (CDC) e o desempenho foi avaliado por meio de estatÃstica descritiva, eficiÃncia de remoÃÃo e percentual de atendimento aos padrÃes ambientais de lanÃamento vigentes. Por fim, realizou-se um diagnÃstico operacional das EstaÃÃes de Tratamento de Esgotos (ETEÂs) a partir de inspeÃÃes de campo. Foram selecionadas oito lagoas de estabilizaÃÃo e os dados analisados corresponderam ao perÃodo de janeiro de 2007 a marÃo de 2011. Optou-se por estudar os parÃmetros de maior relevÃncia e mais analisados no perÃodo avaliado: pH, DQO, DQO filtrada, DBO, DBO filtrada, OD, SST, sÃlidos sedimentÃveis, amÃnia, coliformes totais e E.coli. A verificaÃÃo da forma da distribuiÃÃo de frequÃncia dos indicadores DBO, DQO, SST, AmÃnia e E.coli efluentes das ETEs foi efetuada em duas etapas. Esta verificaÃÃo consistiu de testes de aderÃncia Ãs distribuiÃÃes normal, lognormal, gama e exponencial, atravÃs dos testes do Qui-quadrado (χ2) e Kolmogorov-Smirnov. O teste grÃfico âProbability - Probability Plotâ foi utilizado, em alguns casos, para verificaÃÃo da distribuiÃÃo teÃrica que melhor se ajustava aos dados amostrais. Os âsoftwaresâ utilizados para execuÃÃo dos testes foram o Statistica 7.0 e Statgraphics Centurion XV. O desempenho das ETEs nos parÃmetros pH, DQO filtrada e DBO filtrada nÃo foi muito significativo, entretanto nos parÃmetros OD, SST, amÃnia e E.coli observou-se uma clara superioridade da tipologia ANA+FAC+MAT. Em relaÃÃo à eficiÃncia, verificou-se tambÃm os melhores resultados para esta tipologia, que por apresentar um maior nÃmero de unidades de tratamento tambÃm apresentou maior estabilidade. No diagnÃstico operacional, os aspectos mais relevantes observados podem indicar que as lagoas estavam assoreadas ou necessitavam de dragagem do lodo, interferindo no TDH ou ainda estariam sobrecarregadas organicamente, prejudicando diretamente a confiabilidade, a eficiÃncia e o desempenho das ETEs estudadas. Os testes de aderÃncia mostraram que a maioria dos parÃmetros avaliados seguiu uma distribuiÃÃo lognormal, em especial os que apresentavam maior quantidade de dados. Para todos os parÃmetros, foi grande a variabilidade dos coeficientes de variaÃÃo e de confiabilidade das ETEs, nÃo sendo evidenciada correlaÃÃo entre os valores de CDC e as modalidades de tratamento. Quanto ao percentual de atendimento à legislaÃÃo, verificou-se tambÃm um desempenho superior da modalidade ANA+FAC+MAT e um desempenho aquÃm do esperado para a tipologia FAC, demonstrando um tratamento deficiente se comparado Ãs outras modalidades de lagoas de estabilizaÃÃo. |
description |
The present work aimed to analyze the performance, reliability and operational situation of stabilization ponds located in Fortaleza and its Metropolitan Region. The reliability was assessed by using the Coefficient of Reliability (COR) and the performance was assessed by using descriptive statistics, removal efficiency and percentage of compliance with the discharge limits. Finally, operational diagnostics of the Wastewater Treatment Plants (WTP) was carried out from field inspections. Eight stabilization ponds were selected and the analyzed data corresponded to the period from January 2007 to March 2011. The most important parameters were studied and analyzed over the period assessed: pH, COD, filtered COD, BOD, filtered BOD, DO, TSS, settleable solids, ammonia, total coliforms and E.coli. Shape verification of the frequency distribution for the treated sewage indicators BOD, COD, TSS, ammonia and E. coli was conducted in two stages. This verification consisted of adherence tests to normal, lognormal, gamma and exponential tests of compliance with normal distributions by using the chi-square (χ2) and Kolmogorov-Smirnov tests. The graphical test "Probability - Probability Plot" was used in some cases to verify the theoretical distribution that best fit the sample data. The computer programs used to perform the tests were Statistica 7.0 and Statgraphics Centurion XV. WTPs performances with regard to the parameters pH, filtered COD and filtered BOD was not very significant. However, the parameters DO, TSS, ammonia and E. coli showed a clear superiority of the type ANA + FAC + MAT. Regarding efficiency, the best results were verified for this configuration, which, for having a higher number of treatment units, also showed a higher stability. In the operational diagnostics, the most relevant aspects observed may indicate that the ponds were silted or needed to have the sludge dredged, which interfered in the TDH or they would be organically overloaded, which directly impaired the reliability, efficiency and performance of the studied WTPs. The adherence tests showed that most of the evaluated parameters followed a lognormal distribution, especially those with higher amounts of data. For all parameters, there was a great variability in terms of CV and COR, and there was not an evident correlation between the values of COR and treatment types. In relation to the discharge limits, there was also a superior performance of the ANA + FAC + MAT treatment type and a low non expected performance for the FAC type, showing a poor treatment when compared to other types of stabilization ponds. |
publishDate |
2011 |
dc.date.issued.fl_str_mv |
2011-11-11 |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/masterThesis |
status_str |
publishedVersion |
format |
masterThesis |
dc.identifier.uri.fl_str_mv |
http://www.teses.ufc.br/tde_busca/arquivo.php?codArquivo=9298 |
url |
http://www.teses.ufc.br/tde_busca/arquivo.php?codArquivo=9298 |
dc.language.iso.fl_str_mv |
por |
language |
por |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
application/pdf |
dc.publisher.none.fl_str_mv |
Universidade Federal do Cearà |
dc.publisher.program.fl_str_mv |
Programa de PÃs-GraduaÃÃo em Engenharia Civil |
dc.publisher.initials.fl_str_mv |
UFC |
dc.publisher.country.fl_str_mv |
BR |
publisher.none.fl_str_mv |
Universidade Federal do Cearà |
dc.source.none.fl_str_mv |
reponame:Biblioteca Digital de Teses e Dissertações da UFC instname:Universidade Federal do Ceará instacron:UFC |
reponame_str |
Biblioteca Digital de Teses e Dissertações da UFC |
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Biblioteca Digital de Teses e Dissertações da UFC |
instname_str |
Universidade Federal do Ceará |
instacron_str |
UFC |
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UFC |
repository.name.fl_str_mv |
-
|
repository.mail.fl_str_mv |
mail@mail.com |
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