GW from the multifamily residence
building was collected from 14 flats in a separate collection
system, and then treated using a Passively Aerated Biological Filter
(PABF). The PABF (200 l tank) was comprised of a two layered bed of
BIOROCK® media (BIOROCK® International, Hautcharage, Luxembourg)
of high specific surface area: up to 500,000m2/m3.