Desinfecção de efluente anaeróbio com o uso de ozônio/cloro
The main purpose of this research was to study the oxidation process, the coliform inactivation effectiveness, and the formation of ozone disinfection byproducts, which were associated with disinfection of the anaerobic sanitary wastewater effluent from a UASB reactor. Such event was performed with...
| Autores: | , |
|---|---|
| Tipo de recurso: | artículo |
| Estado: | Versión publicada |
| Fecha de publicación: | 2015 |
| País: | Brasil |
| Institución: | Universidade Estadual Paulista (UNESP) |
| Repositorio: | Repositório Institucional da UNESP |
| Idioma: | portugués |
| OAI Identifier: | oai:repositorio.unesp.br:11449/168016 |
| Acceso en línea: | http://dx.doi.org/10.1590/S1413-41522015020000083662 http://hdl.handle.net/11449/168016 |
| Access Level: | acceso abierto |
| Palabra clave: | Anaerobic wastewater Byproducts Chlorine Disinfection Municipal effluent Ozone |
| Sumario: | The main purpose of this research was to study the oxidation process, the coliform inactivation effectiveness, and the formation of ozone disinfection byproducts, which were associated with disinfection of the anaerobic sanitary wastewater effluent from a UASB reactor. Such event was performed with ozone applied at doses of 5.0 mg.O<inf>3</inf>.L<sup>-1</sup>+ 10 mg.Cl<inf>2</inf>.L<sup>-1</sup> (essay 1); 8.0 mg.O<inf>3</inf>.L<sup>-1</sup> + 20 mg.Cl<inf>2</inf>.L<sup>-1</sup> (essay 2), and 10.0 mg.O<inf>3</inf>.L<sup>-1</sup> + 30 mg.Cl<inf>2</inf>.L-1 (essay 3). The wastewater used in this research was generated at the Wastewater Treatment Plant of Universidade de São Paulo, in Brazil. The total mean decreases of the chemical oxygen demand for ozonized/ chlorinated effluents were 9, 32 and 37% for assays 1, 2 and 3 respectively. The total coliform inactivation varied from >5,7 to 6,4 log<inf>10</inf>and >5.8 to >6.0 log<inf>10</inf> for Escherichia coli. The formation of aldehydes did not suffer any significant changes (p=0.05) for dosages and contact times applied after ozonation/chlorination assays. |
|---|