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57 - ANÁLISE DO POTENCIAL DE APLICAÇÃO DE RESÍDUOS DE ETA A PARTIR DE ESTUDOS DE SUAS CARACTERÍSTICAS GEOTÉCNICAS, MINERALÓGICAS E FÍSICO-QUÍMICAS

Doi: 10.47094/COBRAMSEG2026.6/57

PALAVRAS CHAVE: Resíduo de ETA, valorização de resíduos, caracterização geotécnica, materiais de construção sustentáveis.

KEYWORDS: Water Treatment Plant Sludge, waste valorization, geotechnical characterization, sustainable construction materials.

ABSTRACT:
The potabilization of water generates significant volumes of WTP sludge, a waste product whose inadequate management represents a severe environmental liability. This byproduct is primarily composed of suspended solids from raw water and metallic hydroxides derived from coagulants (aluminum or iron). The objective of this work is to analyze the physicochemical and mineralogical properties of the waste, evaluating its technical feasibility in infrastructure projects and construction materials. The methodology consisted of a systematic review and technical analysis of studies, focusing on characterization tests and aspects related to the compaction and strength of soil-sludge mixtures, in addition to physicochemical and mineralogical analyses. The results indicate that the sludge possesses high plasticity and a predominance of amorphous phases, quartz, and kaolinite. The conclusions point out that, although WTP sludge alters soil compressibility, its incorporation into infrastructure works and structural components is technically viable. Thus, the transformation of sludge from waste into a raw material promotes the circular economy, mitigating impacts on water bodies and preserving natural deposits, provided that mechanical performance limits and environmental safety are respected.

Autores

  • Jefferson Lins da Silva

  • Ramon Felipe dos Santos

  • Rayanne Karlla Santos da Silva

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