What are Biotoilets?

What are Biotoilets?

The environment-friendly bio-toilets for passenger coaches were developed jointly by Indian Railways and Defence Research and Development Organisation (DRDO).

In the bio-toilet fitted coaches, human waste is collected in biodigester tanks below the toilets and is decomposed by a consortium of anaerobic bacteria.

By the process of hydrolysis, acetogenesis, acidogenesis and methanogenesis, the anaerobic bacteria converts human faecal matter into water and small amount of gases (including methane).