Análises físico-químicas e microbiológicas de águas de pré e pós-tratamento na cidade de Jundiaí-SP

Abstract

The objective of the present study was to evaluate the quality of the pretreatment (in natura) and posttreatment water in the city of Jundiaí-SP. It also aims to evaluate the effectiveness of the water treatment of the municipality. Three sampling points were evaluated in the city: the source of the Jundiaí-Mirim River (p1), the accumulation dam located in the City Park (p2), and the posttreatment tap water from the distribution network (p3). The evaluation of the physicochemical parameters (dissolved oxygen-DO, hydrogenation potential-pH, orthophosphate-, nitrite-, nitrate-, ammonia-NH3 , turbidity and temperature) and microbiological (thermotolerant coliform-CT) was performed with the use of Alfakit® Ecokit II. Nonconformities were observed only in relation to the microbiological parameter: p1 presented 2,2 x 103 CFU/mL and p2, 1,8 x 103 CFU/mL; CONAMA Resolution 357/05 establishes up to 2 x 102 CFU/mL for class I. Tap water is in compliance with the reference values established by the Ministry of Health Ordinance 2914/11. The methods used were effective to certify good quality of the water after the rigorous treatment done by the DAE company, however additional studies are suggested for the identification of possible contaminants in the region.

Análise Dos Riscos Da Automedicação E a Prevalência Desse Hábito Entre Os Acadêmicos Da Faculdade Unicesumar Campus Ponta Grossa

“…O desmatamento e avanço da urbanização associados a poluição de rios e lagos alteram o ciclo hídrico. Ademais, a falta de tratamento adequado do esgoto e lixo depositado de maneira inadequada são as principais causas de poluição (COYADO et. al.…”