Banca de DEFESA: ITALO ANDRADE VASCONCELOS

Uma banca de DEFESA de MESTRADO foi cadastrada pelo programa.
DISCENTE : ITALO ANDRADE VASCONCELOS
DATA : 30/07/2019
HORA: 14:30
LOCAL: Auditório do CTEC
TÍTULO:

Nonwoven geotextile used for improve the dewatering procedure of ornamental cutting rock sludge

PALAVRAS-CHAVES:

Dewatering; Ornamental rocks; Geotextile; Efficiency.

PÁGINAS: 77
GRANDE ÁREA: Engenharias
ÁREA: Engenharia Civil
RESUMO:

In the past years the production of ornamental rocks have been intensified at Brazil, especially at Espirito Santo, that it´s the major state that product that kind of rocks. Associate with the demand increase on the confection of ornamental pieces there were concerns about the amount of waste produced and its correct conduction, considering that during the process of cutting and polishing of rock, the water is used for the refrigerated the diamond disc. With that, the water used to carry the solids particles of the rock, resulting in an abrasive sludge that are generally conducted, in Brazil, to septic tank and sewage systems causing silting of the water courses due to the deposition of the solids or the sludge were deposit for decantation processes with the reuse of water. But this procedure has little effectiveness and it takes a long time to complete the desiccation because of the thinness of the solid material contained in the slurry. Due to this fact, has been known of the efficiency to use geotextiles in the desiccation of materials with small particle sizes. The present study sought to evaluate the dewatering of the sludge produced in the marble industry using three different types of geotextiles. At the beginning it was developed a prototype with small dimensions in which the geotextile was inserted in its interior. Therefore, procedure successive fillings that symbolized the fillings performed between the cutting stages at the marble industry. Observing the flow rate behavior and the reduction of the total solids content through the prototype developed, in each filler and for each geotextile under study. It observed that the geotextiles had a typical behavior in the flow outflow over time, independent of the geotextile used, besides a significant reduction in the solids content of the prototype showing the efficiency of the use of the geotextile for the drying of this type of abrasive sludge. Finally, it was concluded that the GTX300 obtained the best response in the reduction of solids content and a better distribution of the flow over time.

MEMBROS DA BANCA:
Externo à Instituição - ANDRE LUIS CALADO ARAUJO
Presidente - 2085750 - FAGNER ALEXANDRE NUNES DE FRANCA
Interna - 1284389 - MARIA DEL PILAR DURANTE INGUNZA