Description

There are still 650 million people without safe water in the world. There is a pressing need to develop decentralised household water treatment (HWT) systems that require little maintenance for rural communities in developing countries that struggle with water quality, disposal and distribution systems, until improvements to the centralised treatment systems are achieved. Current options include boiling, chemical disinfection and filtration, which all have several disadvantages.

One of the simplest ways to treat microbial contaminated drinking water is to deactivate microbes through a combination of heat and UV-light (from the sun), using PET bottles filled with water (so called solar water disinfection (SODIS) bottles). A limitation with the SODIS bottle is the lack of knowledge of the time required to decontaminate the water, as it depends on a range of factors, including turbidity, temperature and cloud coverage. The SODIS bottle is also a short-term solution due to its durability.

The aim of this work is to build on the principles of the SODIS bottle, retaining its simplicity, but making it a more efficient, reliable and low-cost continuous treatment system for long-term use. We are using 3D printing to generate rapid prototypes and test them using a unique indoor solar light set-up that replicates pure sunlight.
 
Our aim is to create a more efficient, reliable, low cost and simple portable HWT system, able to produce sufficient clear drinkable water for a small group of individuals. It will have no breakable parts and will not require a power source, so it can be used to supply water both in rural areas suffering from microbial contaminated water, as well as in crisis situations such as population movements due to war and climate change related disasters.
Short title41000
StatusFinished
Effective start/end date18/07/1617/03/17