Remoção de cobre e zinco de um efluente sintético em wetland construído utilizando macrófita do cerrado e resíduo de cerâmica

Abstract

In addition to the worrying deficit in the coverage of sewage treatment produced in Brazil, the demand for quality water for its various uses is increasing. Thus, the objective of this research was to evaluate the efficiency of the wetland built with vertical flow, using alternative filter media, using ceramic construction waste (RCCC), cultivated with macrophyte present in the cerrado Eleocharis acutangula, for polishing secondary effluents containing copper and zinc. The experiment consisted of two units, one planted with macrophyte (U1) and the control without plant (U2). The experimental units had a surface area of 0.21m², an applied metal load of 13.60 mg / m².d, a hydraulic application rate (TAH) of 0.003m³ / m². Of hydraulic detention time (TDH) of 7 days. Sampling was carried out at the entrance and exit of the units to determine the parameters: turbidity, pH, total dissolved solids (SDT), temperature, conductivity and the metals copper and zinc. The metal removal efficiencies achieved in WC-FV were satisfactory, considering the average concentration of metals added in the experiment 11.75 mg / L (Cu) and 14.13 mg / L (Zn). Units 1 and 2 both achieved an average copper removal efficiency of 99.6%, while for zinc U1 was 81.2% and U2 98.8%.