Tratamento de Efluentes Domésticos em Sistema Biológico de Membranas Nanocerâmicas para Fins de Reúso Florestal

Treatment of domestic effluents in a biological system of nanoceramic membranes for forest reuse purposes

Abstract

Sewage in Brazil represents 54.1% of sewage collected and 49.1% treated. Therefore, technologies must be innovative to remove contaminants so that they return to the environment within standards. Among the technologies: Water Quality Unit, traditional HDPE designed for the separation of solids and oils and a nanoceramic membrane reactor called Biogill, which has aerobic, anaerobic and anoxic phases associated with a BOD removal efficiency of 90% and nutrients of 80%. To contribute to the increase in these rates, an ETE was built in a residential building located in the city of Barra de São Miguel. The treated sewage was reused to produce Aroeira do Sertão and Ipê Roxo seedlings, as well as a morphophysiological and statistical analysis of the seedlings in relation to production with drinking water. Among the results: full compliance with CONAMA resolution nº 430/11; compliance with reuse standards ABNT NBR 13.969/1999, PROSAB, COEMA nº 2/2017 and SES/SMA/SSRH nº 1/2017, except turbidity and BOD, requiring improvements in tertiary treatment. Finally, the effluent showed better results for the development of seedlings than water, however, using ANOVA and Tukey's test (p<0.05), no significant classification was obtained.