Disinfection of Fecal-Contaminated Urine (update)

Plated Specimens from Before and After Processing

Plated specimens from before and after electrochemical treatment of fecal-contaminated urine (human)

The first series of tests used 16 liters of human urine mixed with 0.5 %wt of human feces. This represents a significant milestone in demonstrating the liquid disinfection capabilities of the system using actual human-derived specimens. Future tests will focus on evaluating energy consumed during disinfection and further process optimization.

Liquid Processing Team testing with human urine contaminated with human feces

The RTI Liquid Processing Team prepares the system for disinfection tests with human urine and feces.

Collection tank showing fecal-contaminated urine before processing

Collection tanks holding the fecal-contaminated urine before processing.

The baffled collection tanks allow solids to settle and dissolve prior to entering the process module, eliminating the need for prefiltering the liquid before entering the electrochemical cell. Based on preliminary observations, the 0.5% fecal load represents a worst case for fecal contamination in the urine. Future experiments will evaluate nominal and peak-loading scenarios.

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