On your reference I will get details of DRDO, Biodigester technology so that you can go through the information provided by me.

The Biodigester technology of DRDO has been developed for resolving the problems of un-decomposed human waste to convert in usable water and gasses in an eco-friendly manner.

Salient Features:
No bad smell in toilets from the tanks
Faecal matter in the tank not visible
No infestation of cockroaches & flies
No clogging of digester
Effluent is free from off odour and solid waste
Reduction in pathogens by 99%
Reduction in organic matter by 90%
No maintenance required
No requirement of adding bacteria/ enzyme
No need of removal of solid waste
Use of phenyl is permitted upto 84 ppm

Advantages
Wide applicability
Maintenance free
Effluent water recyclable
Pathogen reduction: > 99%
Suitable for any geo-climatic condition
Minimizes water consumption
Customized & easily adoptable
Organic waste Reduction: > 99%
Environment-friendly & cost-effective

Address:-
Directorate of Industry Interface & Technology Management (DI2TM)
DRDO HQ, DRDO Bhawan, Rajaji Marg
New Delhi 110 105