Banca de DEFESA: VIVIANE FEIJÓ MACHADO

Uma banca de DEFESA de MESTRADO foi cadastrada pelo programa.
STUDENT : VIVIANE FEIJÓ MACHADO
DATE: 07/10/2025
TIME: 14:30
LOCAL: Campus Farroupilha
TITLE:

Technical Feasibility Analysis of Incorporating Water Treatment Plant Sludge into the Production of Conventional Ceramic Materials

KEY WORDS:

ETA sludge. ETA decanter sludge. Input sludge for bricks. Clay and silt aggregate.

PAGES: 82
BIG AREA: Engenharias
AREA: Engenharia de Materiais e Metalúrgica
SUMMARY:

The conventional water treatment process uses basic steps to transform raw water into drinking water. In the decantation stage, a large volume of sludge is generated with high variability and containing various particles that cause color and turbidity to the water. Proper disposal of the sludge produced is essential, as the greater the volume of waste is sought, the greater the volume of waste will be. The reuse of sludge from a Water Treatment Plant (ETA) in another activity or production process is fundamental due to the fate often given to this waste today, generally made available in natura in watercourses, causing a great negative impact. The ceramic industry presents itself as a way of inertizing any materials present in the sludge, by incorporating it into shaped pieces. The objective of this work is to evaluate the incorporation of ETA sludge into clay for the manufacture of conventional bricks and to verify the behavior of the samples in different proportions, temperatures and manufacturing pressures. The work was developed with sludge from a WTP in São Leopoldo, RS, and the clay used was from a brickworks located in the same municipality. 60 specimens were prepared with each of the clay/sludge proportions: 100/0; 97.5/2.5; 95/5; 90/10; 80/20. For half of them, a compaction pressure of 25 MPa was used and for the other half, 50 MPa was used to form the bricks. Every 10 specimens of each amount of sludge incorporation and each pressure used were burned at 900, 1000 and 1100 °C. The results are presented in tables and graphs and indicate that up to the incorporation of a fraction of 10% of sludge in the ceramic mass, it is possible to use conventional bricks made for internal use or without exposure to humidity or rain. At the end, along with the conclusions, some recommendations are presented for the economic, environmental and social sustainability of the water treatment production process.

COMMITTEE MEMBERS:
Presidente - DANIELA LUPINACCI VILLANOVA
Interno - EDSON LUIZ FRANCISQUETTI
Externa ao Programa - MELISSA DIETRICH DA ROSA
Externa à Instituição - ANA MARIA COULON GRISA