Banca de DEFESA: JULIA DE SOUZA CARVALHO

Uma banca de DEFESA de MESTRADO foi cadastrada pelo programa.
DISCENTE : JULIA DE SOUZA CARVALHO
DATA : 10/02/2021
HORA: 09:00
LOCAL: Sera realizada de forma remota
TÍTULO:

EVALUATION OF SLUDGE BIODEGRADABILITY AND MONITORING OF ANOXIC / AEROBIC COMBINED SYSTEM IN THE TREATMENT OF DOMESTIC SEWAGE

PALAVRAS-CHAVES:

Anoxic Treatment. Aerobic Treatment. Respirometry. Immobilized Biomass.

PÁGINAS: 91
GRANDE ÁREA: Outra
ÁREA: Multidisciplinar
RESUMO:

Sanitary sewage treatment techniques based on the combination of anaerobic and aerobic systems are promising alternatives, especially when the advantages of both are combined with sludge pre-treatment processes, with the aim of making biodegradable organic matter available to the process, such as satisfactory carbon source. Thus, the present study aimed to treat domestic sewage in a combined anoxic / aerobic system, with a focus on the production of effluent according to the discharge standards, as well as on the recirculation of the sludge produced as an incentive to the practice of sustainability. In this perspective, this research was carried out in three main stages: Phase I: Monitoring of the experimental system consisting of an anoxic reactor (RAx) followed by an Aerobic Reactor with Immobilized Submerged Support Medium (RAMSI); Phase II: Evaluation of the mass balance of organic material and nitrogenous material and Phase III: Use of respirometry to determine the best method of sludge solubilization. Through the results obtained, it was possible to verify that there was an efficient removal of organic material, SST and total nitrogen mainly in the stationary phase of the physical-chemical monitoring of the system. In addition, from the assessment of the mass balance of organic and nitrogenous material, it was observed that the growth of bacterial biomass occurred from the degradation of the organic fraction and through the nitrification process followed by denitrification, for the nitrogenous material. Through respirometric tests, it was found that the mechanical action stood out as the most productive method for solubilization of aerobic sludge, in relation to anaerobic sludge, greater availability of COD that was rapidly biodegradable, after acid-base reaction. Therefore, it is recommended to carry out a study that not only encompasses sludge solubilization methods, but also the reuse of sludge, as well as evaluating the treatment efficiency after recirculating the treated / solubilized sludge, boosting the practice of sustainable operation in systems wastewater treatment.

MEMBROS DA BANCA:
Interno - 2142681 - BRUNO APOLO MIRANDA FIGUEIRA
Presidente - 2143922 - ISRAEL NUNES HENRIQUE
Externo à Instituição - JOSE TAVARES DE SOUSA