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Worm based sanitation system

A recent study evaluates how effective a worm based sanitation system is in reducing the rate at which solid waste accumulates and at how worms can improve the quality of effluent by reducing pathogen levels and the concentrations of harmful chemicals. Both pilot scale laboratory reactors and a prototype Tiger Toilet were fed with human faeces on a daily basis and the accumulated solid wastes in the systems were weighed. Weekly microbiological and chemical analysis on the effluents of the systems, and of a control reactor without worms were compared. The worms processed the waste and reduced the total accumulated solids by 90% in the laboratory reactor and by 70% in the prototype reactor. This investigation verified that the Tiger Toilet technology provides an effective, low cost, low tech solution to less economically developed countries’ sanitation problems.

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