A design of toilet in which humans excreta is treated by earthworms is called ______.

The correct answer is Vermi-processing toilet. A composting toilet is a type of dry toilet that treats human waste by a biological process called composting. This process leads to the decomposition of organic matter and turns human waste into compost-like material, but does not destroy all pathogens.Vermi-processing toilets is a design of a toilet in which humans excreta is treated by earthworms. In this process, human excreta is completely converted to cake-like structures called vermin cakes by earthworms. Vermi cakes are used mostly in the soil as manure and fertilizers. The vermi-processing toilet is beneficial because It reduces diseases and increases soil fertility. The ECOSAN toilet is a closed system that does not need WATER, so is an alternative to leach pit toilets in places where water is scarce or where the water table is high and the risk of groundwater contamination is increased.What are Biotoilets?The environment-friendly bio-toilets for passenger coaches were developed jointly by the 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 convert human faecal matter into water and a SMALL AMOUNT of gases (including methane).