Non-Thermal Plasma ...
Published by EAWD Greentech, www.eawctechnologies.com - INFO
Non-Thermal Plasma Appropriate as Odor Control Treatment
I would recommend the plasma concept to sterilize the sewage complete in a large quantity/short time .
The units work very well to do that and you have a high value fertilizer as left over ! The water is clean and can be released to the ground or river !!
EAWC