Full text
| |
| Author(s): |
José Paulo Diogo Júnior
Total Authors: 1
|
| Document type: | Master's Dissertation |
| Press: | Limeira, SP. |
| Institution: | Universidade Estadual de Campinas (UNICAMP). Faculdade de Tecnologia |
| Defense date: | 2020-11-30 |
| Examining board members: |
Renato Falcão Dantas;
José Roberto Guimarães;
Enelton Fagnani
|
| Advisor: | Renato Falcão Dantas |
| Abstract | |
Advanced oxidation processes are alternative methods used for the treatment of a large number of effluents. It uses powerful oxidizing radicals formed by the use of ozone, UV, hydrogen peroxide and other oxidizing agents. When it is used for municipal wastewater treatment, the composition of the effluent can hinder the disinfection process. Among them, nitrate and carbonate are well-known radical scavengers, which have the power to decrease the efficiency of the treatment, thus increasing the operational costs. The objective of this work was to model the process of disinfection of municipal wastewater by UV/H2O2 in presence of carbonate and nitrate, in order to predict the necessary oxidant dose for the inactivation of total coliforms and E. coli. For the modeling process, empirical data were used while comparative theory was based on Chick (1908). To validate the change in the Chick equation (1908), Spearman¿s and Pearson¿s correlation coefficients were used. The use of the arithmetic mean, indicated by Chick (1908), with the purpose of modeling the disinfection of effluents in the presence of carbonate and nitrate, presents less consistent results than those obtained by the weighted average used in this study (AU) | |
| FAPESP's process: | 18/03248-7 - Influence of secondary effluent composition on UV/O3 and UV/O3/H2O2 disinfection |
| Grantee: | José Paulo Diogo Junior |
| Support Opportunities: | Scholarships in Brazil - Master |