Proposta de adutora de água bruta para alimentação da ETA do sistema coletivo da Bacia Leiteira a partir do Canal do Sertão

Abstract

A water supply system consists of a set of equipment, works and services aimed at supplying water to communities and its maintenance requires a large application of financial, operational and technical resources. The collective system of Bacia Leiteira is responsible for supplying water to 19 municipalities of Alagoas and it is about 52 years since its inauguration. For years the system has been experiencing shutdowns and has needed repairs, although several improvement and expansion actions, such as the construction of a water treatment plant, have been employed. The proximity or completion of the lifetime of the system leads to the need to carry out actions to review technical concepts, studies of demands and new sources of supply. Thereby, the present work has as general objective the conception of a raw water mains, that will transport water from the Canal do Sertão, intended to provide the water treatment plant located in the municipality of Olho d'Água das Flores that will supply this and the other municipalities inserted in the collective system of Bacia Leiteira. To achieve this objective, a literature review was made on the pertinent subjects and data collection was carried out, with CASAL and SEINFRA support and through the available information, to compose the diagnosis regarding the current system and to obtain the parameters and data necessary for the sizing of the water mains and the water abstraction. The study resulted in the design of a system for a flow rate of 830 L/s, equipped with a catchment with 3 amphibious centrifugal pumps (2 in use with a reserve in alternate use), for a flow rate of 415 L/s and a head of 179 mca, which feeds a pipeline with a diameter of 700 mm in FoFo, a length of 4,180 m, equipped with a bottom discharge, two triple function suction cups and 10 anchoring blocks.