Banca de DEFESA: MARCELO FRANCISCO DOS SANTOS

Uma banca de DEFESA de MESTRADO foi cadastrada pelo programa.
STUDENT : MARCELO FRANCISCO DOS SANTOS
DATE: 13/07/2023
TIME: 14:00
LOCAL: meet.google.com/wgc-hsha-rze
TITLE:

Physical - Chemical Study and Contamination by Pathogenic Bacteria in Shallow Wells in the Municipality of Igarassu – Pernambuco, Brazil

KEY WORDS:

Surface aquifers, contamination, bacteria

PAGES: 68
BIG AREA: Engenharias
AREA: Engenharia Sanitária
SUMMARY:

The increasing use of groundwater from surface wells in the municipality of Igarassu, Metropolitan Region of Recife has been an alternative used by many families to supply the lack of periodic supply by the Companhia Pernambucana de Saneamento. This fact brings with it the risk of these waters being contaminated by pathogenic microorganisms due to the susceptibility of these types of aquifers, so it becomes necessary, the qualitative analysis of some wells in different districts of the municipality, aiming to detect contamination by total coliforms, Escherichia coli, Pseudomonas aeruginosa and Clostridium perfringens. In this analysis, the possibility of using a Tablet Chlorinator was also introduced, in which the objective is to know if it would serve as a mitigator for possible contamination. The analyzes were carried out in 8 (wells) in three different months where their respective analyzes of physical-chemical, biological and also auxiliary parameters (phytoplankton) were carried out according to official methodologies. For microbiology, statistical analysis of variance (ANOVA) was used with a double factor with repetition, in which the results showed that there was no statistically significant difference between raw and chlorinated water, representing the inefficiency of the Tablet Chlorinator in decontaminating the samples, a fact corroborated by the results of the samples that passed through the Chlorinator, in the chloride analysis, in which there were no significant gains. Regarding heterotrophic bacteria, it was found that Well A, without chlorine; Well B, without chlorine; Well C, without chlorine; Well G and H, with and without chlorine, showed values above the recommended for human consumption, the presence of total Coliforms and Escherichia coli, just not found in the samples from well H. The presence of Pseudomonas aeruginosa occurred in 4% of the set sample, with a confirmed presence in the samples without chlorine from Wells A and D, while the presence of Clostridium perfringens occurred in 12% of the sample set, where Wells C, D, E and G stand out, without chlorine and Wells E and G, with contaminated chlorine, results that show the need for monitoring and decontamination of water from surface aquifers in the municipality of Igarassu.

COMMITTEE MEMBERS:
Externa ao Programa - 1704535 - LEOCADIA TEREZINHA CORDEIRO BELTRAME - nullInterno - MARCUS METRI CORREA
Presidente - ROSANGELA GOMES TAVARES