● tool

Biofertilizer production

Practices that use it

SIRDO - Sistema Integral de Reciclamiento de Desechos Orgánicos (Grupo de Tecnología Alternativa)A dry/ecological sanitation system developed since 1978 by the Grupo de Tecnología Alternativa (GTA), coordinated by architect Josefina Mena Abraham. The dry SIRDO is a double-chamber composting toilet with solar heating that treats excreta and organic waste without water, producing biofertilizer. Its community management placed women at the center of the technical, economic and social operation of the system. It operated in multiple states for decades.● Paused· scale national