Hello Aiden, Are you sure ...
Published by Bruno Peeters, managing director at Model Engineering
Hello Aiden, Are you sure about the nitrate (NO3) from urine? As far as I know, the main nitrogen compound in fresh urine is urea (NH2)2CO which rapidly hydrolyzes and decomposes to ammonia (NH3) which is volatile and smells as opposed to nitrate. Ammonia can be oxidized biologically to nitrate (nitrification) but this requires several steps and different bacteria along with a lot of oxygen which are not available in urine and toilet wastewater.