Solar

SODIS Water Station

The SODIS method has been proven to be a simple and low cost method of purifying bacterial contaminated water in rural areas. My proposal here is to up-scale and streamline the SODIS method in the form of large water stations positioned at central locations within the communities. The entire system consists of the following 4 main points: 1. WATER COLLECT POINT: a floating weir is positioned in the lake or river where ...more »

Submitted by (@henrytownsend)

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3 votes

Solar

Proposed Solar Water Disinfection Container (SODIS Container)

Solar water disinfection (SODIS) involves exposing water-filled plastic polyethylene terephthalate (PET) bottles to sunlight for several hours. Exposure times vary depending on weather and climate from a minimum of six hours to two days during fully overcast conditions. Principle of proposed container action This method uses a conical container with a large closure lid fitted on to it a convex lens(the convex lens is ...more »

Submitted by (@ottokomabonny)

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5 votes

Purification

Purification of water using Sun, Salt and Lime

Yes, this is possible and research has proved it. It is also in practice in some areas of the world. This is a very cheap method of water purification as everything needed is readily available. Water can be put in plastic or glass bottles and kept under sun for about 6 hours or 48 hours if it's cloudy. The heat from the sun and ultraviolet rays kill bacteria and other germs in water, this method is known as SODIS or ...more »

Submitted by (@ntukntuk)

Voting

5 votes

Solar

SOLAR STERILAZATION.

Solar sterilization If cost is a bigger concern than time or convenience, the cheapest way to treat water is to leave it in a plastic bottle in the sunlight. Leave clear bottles in the sun for a few hours and the UV radiation and heat kills the microbes that cause diarrhea and other waterborne illness. The Sodis (for solar disinfection) method was deployed in some parts of Haiti after the earthquake in 2010, and it is ...more »

Submitted by (@oseiagyare18)

Voting

5 votes

Solar

Briefly How Solar Disinfection (SODIS) Works.

Exposure to sunlight has been shown to deactivate #diarrhea-causing organisms in polluted drinking water. 3 effects of solar radiation are believed to contribute to the inactivation of pathogenic organisms. #1. UV-A interferes directly with the metabolism and destroys cell structures of bacteria. #2. UV-A (wavelength 320-400mm) reacts with oxygen dissolved in the water and produces highly reactive forms of oxygen (oxygen ...more »

Submitted by (@mattderrick)

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4 votes