save your shit

Christopher Purbst

Mai / May - 2020

Hochschule für Technik und Wirtschaft Berlin

Bachelor of Arts


The save your shit - toilet, is a dry separation toilet for public spaces. It follows the concept of recycling human feces to use them as resources. Thus, feces can be well fermented and processed into black earth through the process of composting. Urine, among other things, can be used directly as fertilizer, as it contains high levels of nitrogen and phosphorus. This toilet module is largely self-sufficient. It has a rainwater treatment system, a solar module for its own energy supply, and a reliable service concept that guarantees optimum cleaning, supply and recycling of the feces. In today's era of man-made climate change, I believe it is time to turn away from the current industrial and resource-wasting path towards a cycle-led holistic society.