Banca de QUALIFICAÇÃO: CARLA GISLAINE DE BARROS SCARP DOS REIS

Uma banca de QUALIFICAÇÃO de MESTRADO foi cadastrada pelo programa.
STUDENT : CARLA GISLAINE DE BARROS SCARP DOS REIS
DATE: 09/12/2021
TIME: 16:00
LOCAL: Ambiente Virtual
TITLE:

Nitrous oxide emission in biological reactors treating landfill leachate and domestic sewage.

KEY WORDS:

Greenhouse gases, support media, MBBR, bioclastic granules.

PAGES: 20
BIG AREA: Ciências Agrárias
AREA: Engenharia Agrícola
SUMMARY:

Combined treatment is an alternative that has been implemented in some Sewage Treatment Plants (ETE) in Brazil, in which the objective is based on adding landfill leachate to domestic sewage in existing conventional treatment units. The combined treatment of leachate and sanitary sewage has proven to be a viable alternative, taking into account the minimization of adverse effects on the environment. The activated sludge effluent treatment process is a renowned technology. However, over the last decades, techniques to improve the performance of conventional systems have been studied. For biological processes to occur more efficiently, new alternatives have been used, such as the introduction of support means in the biological reactor. These support media can be bioclastic granules, plastic biomedia, granular activated carbon, powdered activated carbon, among others. The biological removal of nutrients through nitrification and denitrification processes can result in the generation and emission of nitrous oxide (N2O), which is considered the third most important gas in the increase in the anthropogenic greenhouse effect. It has a global warming potential about 300 times greater than carbon dioxide. Thus, this project aims to evaluate the emission of nitrous oxide in bench scale biological reactors, treating landfill leachate and domestic sewage in combination. Three continuous reactors will be operated, being activated sludge reactor (RLA), moving bed and adhered biomass reactor (MBBR) and activated sludge reactor with addition of bioclastic granulate (RLAGB), evaluated 4 leachate/sewage mixtures (0%, 5 %, 10% and 20%) in 3 hydraulic retention times (TRH) (4, 8 and 16h). For each condition, N2O emission and reactor performance will be monitored. With this, it is expected in the development of the project to correlate the operational conditions of the reactors with the emission of N2O with the proportion of leachate added to the ETE, in addition to evaluating the optimal conditions of TRH and leachate/sewage mixture for each evaluated process.

BANKING MEMBERS:
Interno - 1759225 - ALEXANDRE LIOI NASCENTES
Externo à Instituição - DIEGO MACEDO VENEU - UVA
Externo à Instituição - EDGARD HENRIQUE OLIVEIRA DIAS - UFJF