Assessment of treatability of the Tietê River through a process of coagulation-flocculation associated with hydrodynamic cavitation and ozonation

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Autor(es): dc.contributorUniversidade Estadual Paulista (UNESP)-
Autor(es): dc.contributorUniversidade de São Paulo (USP)-
Autor(es): dc.creatorCampos, Valquíria-
Autor(es): dc.creatorDomingos, Janaina M. F.-
Autor(es): dc.creatorNolasco, Marcelo A.-
Autor(es): dc.creatorDE MORAIS, Leandro C.-
Autor(es): dc.creatorMarques, Diego G.-
Data de aceite: dc.date.accessioned2025-08-21T15:15:09Z-
Data de disponibilização: dc.date.available2025-08-21T15:15:09Z-
Data de envio: dc.date.issued2025-04-29-
Data de envio: dc.date.issued2023-12-31-
Fonte completa do material: dc.identifierhttp://dx.doi.org/10.1590/0001-3765202420230856-
Fonte completa do material: dc.identifierhttps://hdl.handle.net/11449/299983-
Fonte: dc.identifier.urihttp://educapes.capes.gov.br/handle/11449/299983-
Descrição: dc.descriptionAs it flows through the city of São Paulo, the Tietê River receives heavy discharges of industrial effluents and domestic sewage, resulting from the city’s continuous urban expansion and the inadequacy of its sanitary sewage system. This study focused on an analysis of the efficiency of PGα21Ca and quaternary ammonium tannate, water purification products, based on coagulation-flocculation and sedimentation tests, followed by treatment with a hydrodynamic cavitation reactor associated with ozonation in the treatment of Tietê River water. The removal of turbidity, apparent color, and chemical oxygen demand (COD) were evaluated. Jar testing assays were conducted, and the best turbidity removal rates were obtained with a concentration of 300 mg L-1 for PGα21Ca and 150 mg L-1 for quaternary ammonium tannate. The coagulation-flocculation treatment removed approximately 93% of turbidity for both coagulants. After combining coagulation-flocculation with hydrodynamic cavitation with ozonation, the final COD removal rate applying PGα21Ca was 47.63% in 1 hour of reaction, while that of quaternary ammonium tannate was 40.13% in 2 hours of reaction. Although the results appear to indicate the superior performance of PGα21Ca, it should be noted that the treatment with quaternary ammonium tannate also provided good results in reducing turbidity, COD, and apparent color, using a smaller dose of this coagulant and that its use may be more advantageous from an environmental point of view, due to its natural composition.-
Descrição: dc.descriptionFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)-
Descrição: dc.descriptionUniversidade Estadual Paulista-UNESP Instituto de Ciência e Tecnologia de Sorocaba, Av. Três de Março, 511, Alto da Boa Vista, SP-
Descrição: dc.descriptionUniversidade de São Paulo-USP Escola de Artes Ciências e Humanidades, Rua Arlindo Bettio, 1000, Ermelino Matarazzo, SP-
Descrição: dc.descriptionUniversidade Estadual Paulista-UNESP Instituto de Ciência e Tecnologia de Sorocaba, Av. Três de Março, 511, Alto da Boa Vista, SP-
Descrição: dc.descriptionFAPESP: 2021/08619-6-
Idioma: dc.languageen-
Relação: dc.relationAnais da Academia Brasileira de Ciencias-
???dc.source???: dc.sourceScopus-
Palavras-chave: dc.subjectcoagulation-flocculation tests-
Palavras-chave: dc.subjecthydrodynamic cavitation-
Palavras-chave: dc.subjectozonation-
Palavras-chave: dc.subjectquaternary ammonium tannate-
Palavras-chave: dc.subjecturban river-
Palavras-chave: dc.subjectγ-polyglutamic acid-
Título: dc.titleAssessment of treatability of the Tietê River through a process of coagulation-flocculation associated with hydrodynamic cavitation and ozonation-
Tipo de arquivo: dc.typelivro digital-
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