Assessment and risk modeling of airborne enteric viruses emitted from wastewater reused for irrigation.

摘要: Reclamation of wastewater (WW) for irrigation, after treatment represents a challenge that could alleviate pressure on water resources and address the increasing demand agriculture. However, risks to human health must be assessed, particularly those related enteric viruses resist standard treatments in most plants (WWTP). The associated with exposure viral bioaerosols near WWTP agricultural plots irrigated WW are poorly documented. objectives this study were 1) better characterize found “standard WWTP” over fields treated 2) propose numeric model assess risk populations located close areas, particular attention norovirus, which is responsible gastroenteritis France. Water air samples collected at various locations largest French WW-irrigated site Clermont-Ferrand, entrance treatment, above activated sludge basins, WW. Various both before treatment. Norovirus was abundant > 10e4 genome copies/l (GC/L) ~ 10e3 GC/L Low quantities ( 10e-4 strong wind speed (≥ 3 m/s) constant emission rate 8e3 GC/m3/s. This probability decreases by log when distance source doubled. information can aid development safe reuse policies terms local setback conditions reuse.