The Energy Supply System
Water Purification - Peter Clarke
Currently there is no hot water in Shirati Hospital, and running water only in the operating theatre (OT). Water is pumped directly from Lake Victoria (1.3 miles away) and stored in a large tank, shown below, in the hospital grounds.
Because Lake Victoria has a major problem with parasite-carrying snails, and also because the many communities bordering the lake use its water for bathing, washing, and drinking, E. Coli and schistosomiasis (bilharzia) contamination is a major problem for both the village of Shirati and Shirati Hospital. At the present time the hospital does not have an alternative source of water.
We propose to use a portion of the solar- generated electricity in the system designed for Shirati Hospital's operating theatre to purify the hospital's water. We hope that this purification system, once installed in Shirati, could be replicated in other localities in the region facing similar problems with contaminated water.
The photographs below show Napier University engineers, Tom Grassie and Peter Clarke, and Samwel Ogoya, Chief Technician at Shirati Hospital, discussing measurements from a small solar thermal demonstration set up by Tom and Peter inside the hospital. 20 minutes in the Shirati sun, and water in the black hose under the plastic sheet reached 56 degrees degrees C!
This small project proved invaluable in pointing up the potential benefit both to ourselves and to the Tanzanian community of mutual knowledge transfer and skill-sharing: as a result of our visit last summer, and our collaboration with Samwel, a project recycling the metal tubing from the hospital's old bed-frames to make rooftop solar water heater pipes has already begun. Hot water! A simple and achievable solution, with far-reaching effect.