screens and grit traps, followed by a biological treatment in a UASB reactor and a sub-surface horizontal flow phytodepuration … step. The use of a UASB reactor equipped with a top cover, as well as of the phytodepuration process employing a porous … efficiencies of 98.8% for fecal coliforms and 97.9% for fecal <i>enterococci</i> were achieved. The UASB reactor showed an …

(UASB) was evaluated. Two-parallel processes were in operation for 100 days, one with recirculation (closed system) and the …