Investigação de parâmetros físico-químicos e microbiológicos de qualidade da água de poços no município de Sousa-PB para fins de potabilidade

Abstract

Physicochemical and microbiological analyzes of waters from artesian wells offered to the population of the urban area of Sousa-PB. They were carried out in order to verify the potability and suitability for human consumption, according to parameters established by Ordinance nº 2.914 / 2011 of the Ministry of Health. Due to physical-chemical parameters caused mainly, by the high concentration of total dissolved solids, such as: sodium, bicarbonates and chlorides some samples were considered inadequate. It was observed that these parameters did not change much during the months in which they were monitored, indicating that the alternation between rainy and dry periods does not influence the concentration of these chemical species. In addition, contamination by the presence of total coliforms, thermotolerant and E. coli was also observed in all the wells evaluated, which may be associated with clandestine sewage connections or infiltrations caused by septic tanks. Finally, there is an urgent need for a quality control of the water offered to the population of SousaPB, considering that, the alteration of some parameters can cause damages to human health.

A Compartimentalização Sedimentar de um Estuário do Nordeste Amazônico A Sedimentology Compartmentalization of a northeast Amazon Estu

“…The Mocajuba estuary is well mixed through the water column (figure 3). According to Gomes (2018) and Rollnic et al (2020a), the Mocajuba estuary has high salinity values throughout the estuary that decrease in salinity upstream, concentrating the highest values near the estuary mouth.…”

“…The residual volume transport (at equinoctial tide) is 24m³.s -1 in the dry season, representing a small seaward exportation flow, and -248m³.s -1 in the rainy season, showing a landward importation flow (Gomes, 2018;Rollnic et al, 2020a). In the rainy season, there is a reduction in flow due to the influence of the spring tide, which reduces the flow in Mojuim and generates imports in Mocajuba (accumulation of water and sediment).…”