The use of geotextile closed systems for the dewatering of sludge is a new technology that has been used in recent years in Brazil and globally. This technology has relevant technical and environmental advantages. The variables that influence the operation and evaluation of the efficacy are under constant investigation by the scientific community. This paper presents a state-of-the-art analysis of the use of geotextile closed systems for the dewatering of sludge with high water content, contributing to a better understanding of the fundamentals involved in the technical and scientific application of this technology. This paper also presents the Brazilian experiences with the dewatering of sludge generated in different sectors. This subject has significant relevance; it is a new method to reduce the volume of sludge produced on a large scale and enable final disposal with low environmental impacts.
