Banca de DEFESA: SUZZANE SANTOS MERCANDELLI

Uma banca de DEFESA de MESTRADO foi cadastrada pelo programa.
DISCENTE : SUZZANE SANTOS MERCANDELLI
DATA : 22/03/2021
HORA: 10:00
LOCAL: videoconferência na plataforma RNP (sala PEI-UFBA)
TÍTULO:

How to improve the performance of water desalination actions for human consumption in the semiarid region of Bahia.

PALAVRAS-CHAVES:

Reverse Osmosis; Água Doce Program; Risk management .Semiarid region.

PÁGINAS: 215
GRANDE ÁREA: Engenharias
ÁREA: Engenharia de Produção
RESUMO:

The desalination process using reverse osmosis membranes has provided drinking water for families in the semiarid region of Brazil since the 1990s. Currently, this process is being used by a Federal Program called “Água Doce”. Its predecessor, the Água Boa Program, resulted in the population abandoning part of the systems. Having in mind to collaborate that the same does not happen with the current program, this research proposes to present possible ways to improve the performance of the actions of desalination of saline water from tubular wells drilled on crystalline rock formations. Therefore, in view of the complexity of approaching the reality of this scenario, several methodological instruments were applied, namely: documentary and bibliographic reviews, field research in a community benefited by the Program, risk / failure assessment and technical and economic feasibility analysis. The results obtained allowed to characterize the scenario of this study, to explore the Program management model and technical data of the systems design. This, consequently, allowed us to understand the complexity involved in the implementation and continuity of the Program. It was possible to identify the problems experienced by communities to keep the systems in operation, such as: system outages due to lack of maintenance, lack of spare parts and equipment, lack of chemical products, absence of operators and suspension of payment from operators by the city hall. The application of Risk Management contributed to the development of a) A proposal for a risk methodology aimed at the scenario of the Água Doce Program in the state of Bahia; b) Development of an Analytical Risk Structure for the Program; c) Survey of a list of 36 risks, categorized and ranked according to the urgency of their treatments. The comparison of the results of risk management with the result of the first monitoring of the program in Bahia, evidenced the occurrence of the risks raised, which had the effect of suspending the operation of 31% of the systems of the installed systems. The technical analysis made it possible to verify that being the systems designed to supply 10L / day / person, well flow rates are not being used according to their full production capacity. Total dissolved solids in the purified water of most systems is below 200 mg / L, 80% below that specified for drinking water (1000 mg / L). Regarding the consumption of electricity, of six systems in the municipality of Ipirá in Bahia, there was an average trend of increase of 3.92kWh / m³ between the projected and the measured. The study for the centralization of desalination systems in Uauá, allowed the simulation of the concentration of eight treatment points in a single plant, and thus, the identification of the advantages in relation to the operation, logistics, acquisition and maintenance. On the other hand, the high investment cost for the acquisition and installation of water mains was identified as a disadvantage. Therefore, this work allowed the development of a list of opportunities for reliability in the water supply by the Program, presented in the body of the chapters.

MEMBROS DA BANCA:
Presidente - 109.908.525-04 - ASHER KIPERSTOK FIRST - UFBA
Externo(a) à Instituição - GEORGE DE SOUZA MUSTAFA
Externo(a) à Instituição - IARA BRANDAO DE OLIVEIRA
Externo(a) ao Programa - 1741302 - LUCIANO MATOS QUEIROZ