“The gas goes to the kitchen to cook the food that is grown by the fertilizer. The students eat the food and then produce more gas and fertilizer – and so complete the cycle.’
The new biogas digester at Three Crowns School in the Eastern Cape forms part of a waste water treatment system that provided flush toilets to replace the pit toilets, gas that reduces the need to transport in LP gas or use electricity for cooking, and after further purification provides water and fertiliser for the school’s vegetable garden.
