The only limitation I believe ...
Published by Rajeev Kher, 3 S Sanitation div of Saraplast Plc - Managing Director
The only limitation I believe is that this is designed and applicable for a set number of users.It may not be viable for a community toilet or lower income group common toilet in rural or urban setting. From the basics it appears like a modified septic system with a lab developed culture in lieu of a seeding sludge and compartments that would filter the wastewater. I am told the culture has a great temperature resistence -20 to +50 degrees centigrade so would be good for sub zero conditions where usage is also appropriate as per the design.