Degradação de PVC e PVC reciclado frente ao ataque ácido em sistemas de coleta de esgoto

Abstract

The infrastructure of macroredes sewage sewage systems in major cities have a huge variety of materials on pipes, ranging from the concrete to the PVC. There aren’t detailed studies on the characteristics of the material ideal for installation in sewerage networks, considering the environment they are exposed, where disorders caused by chemical corrosion are common. This fact gives the Materials Science attribute to meet and decide the future of these large companies - the sanitation companies - with regard to study and develop materials that will withstand chemical chain reaction that form the systems of collection and disposal of wastewater. This paper is a survey to assess the behavior of PVC and PVC-Recycled against the attacks promoted by sulfuric acid in a bench scale laboratory. The comparative study between the two materials, presents the results of loss of structural mass of the material tested, depending on contact with acids generated during the transport of sewage.