Banca de DEFESA: HELOIZE MARIA DO NASCIMENTO SANTOS

Uma banca de DEFESA de MESTRADO foi cadastrada pelo programa.
STUDENT : HELOIZE MARIA DO NASCIMENTO SANTOS
DATE: 29/08/2022
TIME: 14:00
LOCAL: Sla virtual
TITLE:

SYSTEM OF STABILISATION PONDS AND AERATED LAGOON FOR THE REDUCTION OF ORGANIC LOAD AND NITROGEN IN SEWAGE SLUDGE FROM LANDFILLS

KEY WORDS:

leachate, nitrogen, air stripping, nitrification, denitrifaction

PAGES: 140
BIG AREA: Engenharias
AREA: Engenharia Sanitária
SUBÁREA: Saneamento Ambiental
SPECIALTY: Controle da Poluição
SUMMARY:

Sanitary landfills are one of the adequate forms of final disposal of solid waste. During the degradation process, they produce a leachate with a large amount of organic and inorganic pollutants and, before being disposed of or reused, they need to undergo treatment to meet the discharge standards imposed by legislation. Among the types of treatment, there is the stabilization lagoon system associated with aerated lagoons. This system is indicated for effluents with a high concentration of organic matter, is easy to apply and has lower operating costs. However, most of the time the lagoon effluent does not meet the discharge standards and requires post-treatment, usually physical-chemical, leaving the lagoons with the function of pre-treatment aiming to fit the effluent to the standards required by the post-treatment. The main objective of this study is to evaluate, in real scale, the pre-treatment by a system of stabilization ponds and aerated lagoon to reduce the organic load and nitrogen from percolate generated in the landfill of Maceió (AL), since the understanding of what occurs in the treatment system is essential to guide the rational basis of design and operation, and the search for improvements for implementation of denitrification in the existing biological pre-treatment. Parallel to the real scale analyses, bench tests of denitrification will be carried out in an environment simulating an anaerobic lagoon and air stripping tests in environments simulating aerated lagoons in order to seek ideal operational parameters in relation to the variation of leachate flow. This is expected to identify the main characteristics and limitations of the existing pre-treatment and technological alternatives that can increase its efficiency, which can serve as a model for other landfills in the State of Alagoas.

BANKING MEMBERS:
Presidente - 1121201 - NELIA HENRIQUES CALLADO
Interna - 3091527 - DAYSY LIRA OLIVEIRA
Interno - 1774383 - EDUARDO LUCENA CAVALCANTE DE AMORIM
Externa à Instituição - MARIA ODETE HOLANDA MARIANO - UFPE