Presentation of the participants of the TUM DeSal Challenge 2016

Cheap Water

Team leader:

Desalination technology: Solar still

The idea is the construction of a simple and cheap water purification system made of locally available PET bottles which supplies constant clean and disinfected drinking water for the family. Two different large PET bottles are needed per cascade for the water treatment plant. The bottoms of the large bottles are cut off so that they can stick to each other. The distillate is collected from the underside of the large bottles. The small bottles, in which the dirty water flows, are cut lengthwise. The system is mounted on the roof and filled with dirty water once a day. Each channel of the corrugated metal roof a cascade can be inserted. The water treatment system covers the entire roof. The main goal is the production of sufficient water for a family, what can be achieved through the production of drinking and service water. On the one hand absolutely clean drinking water is produced on the other hand, sufficient amounts of disinfected service water.

Institution: Technische Universität München

Ranking at the TUM DeSal Challenge 2016: Not ranked