Design of a wastewater collection system for the historical central of Paraty, Brazil

Abstract

The city of Paraty in the State of Rio de Janeiro, currently lacks a wastewater collection and treatment system. Untreated wastewater is carried by two rivers surrounding the city and discharged into a bay in front of the city. This creates many potential health, environmental, and social risks for the city. The city is in need of a plan to deal with its wastewater. The following thesis presents a conceptual design for a wastewater collection system in the historical center of Paraty, Brazil. Such a design can serve as a model that can be implemented to the other sections of the city. The design of this collection system involved investigating wastewater flow requirements, alternatives for wastewater collection, possible locations for a treatment plant, a feasibility study, and cost estimates for the system. A conventional gravity collection system was designed based on the conclusion that for the city of Paraty, a uniform, consistent, simple collection system would be the most appropriate.