Providing low-cost decentralized sanitary system for treatment, water, and resources recovery which as a next step has to be affordable and effective without the input of electricity.
This toilet block integrates energy and water reuse in a single sanitary system. It uses biochar or animal dung to: i) dry feces (covered with sawdust) and convert dried feces into biochar under oxygen-deficit environment for subsequent combustion (i.e., energy recovery from feces); and ii) extract water from urine by boiling under reduced pressure conditions to produce potable-grade water after ion exchange resins and activated carbon treatment. The base component is a urine diversion dehydration toilet.
Objective 1: Construction, optimization and mechanization of pneumatic urine-diversion dehydration toilet.
Objective 2: Development and optimization of options for urine concentration and water recovery and disinfection
Objective 3: Development of feces collection/drying/combustion chamber
This was an RTTC grant.
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