The sewage treatment stations (STSs), located in Teresina-PI, were designed to receive domestic sewage, however, in 2011 they began to receive unknown sewer from clean pit vehicles. This sewage is compromising the effluent treatment efficiency. The permeable concrete with the addition of titanium dioxide (TiO 2 ) presents itself as an alternative process to assist in the treatment of sanitary sewage due to its photocatalytic properties. Therefore, the objective of this work was to evaluate the mechanical, hydraulic, and microstructural properties of permeable concrete with the addition of 3, 6 and 10% of TiO 2 . The results determined that the variation in the concentration of TiO 2 significantly influenced the properties analyzed in this research. The addition of TiO 2 to the permeable concrete to a concentration of 6% impairs its physical and hydraulic properties and improves its mechanical properties.
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