1997-07-01

Viral Challenge of an Advanced Life Support Water Treatment System 972413

The ability of the water recovery system (WRS) designed for Phase II of the Lunar-Mars Life Support Test Project to remove viral contaminants was tested by challenging the system with bacteriophages MS-2 and PRD-1. Urine-pretreatment and ultrafiltration/reverse osmosis (UF/RO) steps each reduced the combined density of both bacteriophages from >109 to <1 Plaque-Forming Units (PFU)/100 mL. UF/RO also reduced the bacterial density from 108 to 107 Colony-Forming Units (CFU)/100 mL. Before UF/RO, the predominant species of bacteria in the water were Acinetobacter calcoacetious and Klebsiella pneumoniae; afterward, the predominant species were Burkholderia cepacia and B. picketti. The removal of the bacteriophages and the difference in predominant bacteria across the UF/RO step suggest that the Burkholderia had been established downstream of the UF/RO membranes before the test began. An aqueous-phase catalytic oxidation system (APCOS) and iodination further reduced the bacterial density from 107 to <1 CFU/100 mL. Neither bacteria nor bacteriophages were detected in the final product water. This WRS successfully removed viral and bacterial contaminants from wastewater.

SAE MOBILUS

Subscribers can view annotate, and download all of SAE's content. Learn More »

Access SAE MOBILUS »

Members save up to 43% off list price.
Login to see discount.
Special Offer: With TechSelect, you decide what SAE Technical Papers you need, when you need them, and how much you want to pay.
X