Medida mitigadora preventiva na água de rio através de filtros lentos.

Abstract

Filtration is the process that takes place through the passage of a fluid through a porous medium, thus being able to retain suspended and colloidal material in it. The technology involved in water treatment through a slow filter as an alternative product to the supply of drinking water is what drives this research. In this sense, the aim is to assess three filters with four different filtering materials as a preventive mitigation measure in river water. For the design of the filters, it was necessary to design three columns in descending flow designed for a single-family system and only then make them with the four filtering materials: kaolin, green clay, white clay and sand. To analyze the efficiency of the prototypes, river water (raw and treated) was analyzed according to the Standard Methods, aiming at adapting to the limits recommended in Ordinance MS 888/21. From the results obtained, it is concluded that it is of fundamental importance to continue the studies for a longer filtration career due to the potential that the system presented for a contribution to sanitation in Brazil, reflecting on the public health of the Brazilian population.