Banca de DEFESA: JHONATAN MATOS DE SOUZA

Uma banca de DEFESA de MESTRADO foi cadastrada pelo programa.
DISCENTE : JHONATAN MATOS DE SOUZA
DATA : 25/10/2021
HORA: 16:30
LOCAL: on line
TÍTULO:

INFILTRATION WELL FILTERING SYSTEM ADAPTED TO URBAN WAY DRAINAGE - HEAVY METAL MITIGATION

PALAVRAS-CHAVES:

flooding; infiltration well; heavy metals

PÁGINAS: 88
GRANDE ÁREA: Outra
ÁREA: Ciências Ambientais
RESUMO:

In cities, flooding negatively impacts the lives of its residents and passersby, who are unable to move during heavy rains, with potential human losses, in addition to material goods, coexisting with the risk of contamination through direct or indirect contact with the water retained in the track. With the premise of addressing this issue, this research brings, as a structural alternative, the use of an infiltration well adapted to mitigate flooding, adjunct in parallel to the public rainwater drainage system. It is capable of promoting the return of water resources to the water table through infiltration and, notably, free of external pollutants. Thus, a filtering composed of layers of sand and granular activated carbon was proposed in this structure, together with a non-woven synthetic blanket separating the soil from the other materials, in addition to a pre-filter as a complementary structure to remove a greater fraction of solids. presents in the urban environment, which reduce the efficiency of the process. The system was given the name of Improved Infiltration Well, having as criteria in the choice of its components its retention sources, durability, filtration time and cost/benefit. In the mathematical modeling, the pre-filter proposed retention of 2.26 to 80.52% of the sediments in the dynamic flow condition, especially for a range of 0.063 to 2mm, while in the medium sand filter a greater retention is predicted in the range 0 .1 and 0.2mm, with removal of 12.38% of the sediments. Granular activated carbon was used in the retention of heavy metals, such as Lead (Pb), Chromium (Cr), Cadmium (Cd) and Nickel (Ni), and the filter efficiency was evaluated through a comparison with the results received in runoff water, corresponding to the rainy season for a delimited urban environment in the city of Cuiabá-MT. It was possible to overcome that each gram of filtering material has a capacity to retain contaminants such as Pb and Cd, respectively of 12.05 mg and 30.58 mg, above those observed in the field, so that such material is in a condition for removal of even more metallic compounds, conferring greater health to human and the environment, while the elements Cr and Ni were not necessarily found, offering no risk as underground safety water or having the need for a filtration process. Subsequently, the geometry and other technical specifications sufficient for a satisfactory filtration are defined, allowing the amount of contaminants present to meet the determined concentration limits, determined in current legislation, namely: CONAMA resolution No. 396 of April 7, 2008, among others.

MEMBROS DA BANCA:
Presidente - 123201003 - FRANCISCO LLEDO DOS SANTOS
Interno - 118181008 - WILKINSON LOPES LAZARO
Externo ao Programa - 118188001 - ERNANDES SOBREIRA OLIVEIRA JUNIOR
Externo à Instituição - Cristhiane Michiko Passos Okawa - UEM