Utilização de lodo de ETA na fabricação de materiais cerâmicos para revestimento aplicados na construção civil

Abstract

The final destination of the waste produced at the Water Treatment Plants is a worldwide concern, some studies are being carried out with the purpose of seeking economically viable and environmentally acceptable solutions for disposal or reuse of the ETA sludge, where the use of these residues generates some good or benefit to the population, from the technical, environmental and economic points of view. Thus, the research aims to use sludge from the Water Treatment Station in the city of Patos/PB to manufacture ceramic material for coating to be applied in civil construction, as an innovative and environmentally sustainable technology. The methodology of the work was carried out in four stages, namely: the bibliographic review, the characterization of the study area where the samples were collected, presentation of the experimental procedures for product development and the evaluation of the final product produced. In the results, it is estimated that the volume generated of ETA sludge in the city of Patos/PB would produce about 72 thousand pieces of ceramic tiles per day. The ceramic composites produced were subjected to analysis of specific parameters, such as linear and volumetric shrinkage, apparent specific mass and water absorption, and met the qualitative requirements suggested by the Association of Technical Standards (NBR 13818: 1997) - Ceramic Plates for Coating - Specification and Test Methods. In conclusion, the ceramics produced are able to be used as a coating in civil construction and can be used without or with treatment on their surfaces, such as resins, sealants and varnishes, further increasing the product's resistance and durability, in addition to enhancing its aesthetic value. Bringing an aspect of rusticity.