Projeto de um sedimentador a ser implementado em uma estação de tratamento de efluentes

Abstract

Basic sanitation is a right guaranteed by the federal constitution, and its implementation is of paramount importance in preveting numerous waterborne diseases, such as hepatites A and E, cholera and verminosis. Effluent treatment is the basic sanitation measure used to purify water in less time, before returning it to the environment or reusing it in any operation, of the various reuse operations. Sedimentation, also know as decantation, is a process of separating solids in suspension from liquids, which uses gravitational acceleration to make the solids descend and settle at the bottom of the equipamento, the sedimentator. The purpose of this work was to develop the project of a cylindrical thickener sedimenter with a conical bottom made of polyvinyl chloride (PVC), which had 6.032m3 in volume, 10.33m2 in area, 3.74m in diameter and 0.753m in height, supported by 4 concrete columns of 1m high each, 0.14m in diameter, which operating 6 days a week in the primary treatment of a hypothetical effluent treatment plant. In the project, the method proposed by Pavlov, Ramonkov and Naskov in 1981 was used, strating from the condition of sedimenter 1m3 of effluent per day.