Monday, October 26, 2009

Ecological Dry Toilet

Location: Mexico

Years: 1980-present

Organization: Centro de Innovacion en Tecnolgia Alternativa

Designer: Cesar Anorve

Manufacturer: Tecnologias y Sistemas Ecologicos (TESEC)

Cost: $27-54 (stand alone toilet), $150-550 (complete system)

Design Like You Give a Damn: Architectural Responses to Humanitarian Crises, p.296

The Ecological Dry Toilet was created by Centro de Innovacion en Tecnolgia Alternativa, in Mexico, where nearly half the water used in a Mexican home goes down the toilet. The toilet both conserves water and creates fertilizer.

The Ecological Dry Toilet mounts a conventional toilet seat cover over two chambers—one active, where waste is collected, the other passive, where waste composts while the other chamber is in use. The toilet diverts urine to a tank where it settles before being used as fertilizer. Solid waste passes to the active chamber, which is “flushed” with ash or lime rather than water to speed composting and neutralize odors. When the active chamber is full, it is sealed off and the waste is left to compost for 18 months or more. Meanwhile, composted waste is emptied from the second chamber, which them becomes active again.

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