Survival and Fate of Enteric Viruses in Soil Treatment Systems for Wastewater

摘要

Laboratory and pilot-scale studies were carried out on the interactions and survival of representatives of two different enteric virus groups (poliovirus type 1 and reovirus type 3) in 11 different soil materials in settled sewage. There were marked differences in the abilities of the soil materials to remove/retain viruses from the sewage, but for each soil material the behavior of the two viruses was often similar. Virus absorption to soils was rapid, mostly occurring in 15 minutes. Clayey materials effectively absorbed both viruses from wastewater over a range of pH and total dissolved solids (TDS). Sands and organic soils were relatively poor sorbents, but, in some cases, their viral sorption ability increased at low pH and with the additionof TDS or divalent cations.