Jan 1, 2021 · Furthermore, Du et al. combined a typical RWH system with GDM filtration processes to treat roofing rainwater over 160 days, found GDM filtration could obtain the relatively stable level of permeate flux at ~4.0 L/(m 2 ·h) and ~2.4 L/(m 2 ·h) under a setting water head of ΔH = 0.4 m (140 days) and ΔH = 0.6 m (20 days), provided a new method