Sulfide Generation and Clogging during Infiltration of Denitrified Domestic Wastewater through Two Artificially Created Soils

AbstractThis study focused on a pilot-scale infiltration of denitrified wastewater through artificially created soils. The hydraulic performance and sulfide production were evaluated to ensure the system’s longevity over the period needed for autotrophic denitrification. Experiments were carried out over a year in two reactors of 200-L capacity. Sandy and sandy loam soils were tested to represent highly permeable (Ks=0.028 cm/s) and permeable (Ks=0.0013 cm/s) soils, respectively. The infiltration of denitrified wastewater at a continuous hydraulic rate (130 and 70 L/m2/day) through these soils did not lead to the production of large amounts of gaseous hydrogen sulfide [[H2S]