Quick Answer
A suitable location for setting up a solar still is a spot with direct sunlight, minimal shade, and a stable, flat surface. This allows the still to function efficiently and effectively harvest water. A south-facing slope is ideal, but a level area will also work.
Topography and Orientation
When selecting a location for your solar still, consider the topography of the area. A south-facing slope with an angle of 30-40 degrees is ideal, as it maximizes exposure to direct sunlight. If a slope is not available, a level area will also work. However, be sure to orient the still towards the south (in the Northern Hemisphere) to ensure maximum sunlight exposure.
Soil and Water Availability
Look for an area with a high water table or a source of saline or brackish water, as these can be used to create a solar still. The still should be placed over a water source, or a location where water can be easily collected. The soil should be relatively dry and free of dense vegetation, making it easier to dig a hole and create a collection basin.
Digging the Still and Creating a Collection Basin
Dig a hole approximately 1-2 feet deep and 1-2 feet wide, depending on the size of the still. Create a collection basin in the center of the hole, using a smaller hole or a shallow depression. This will collect the distilled water as it evaporates from the contaminated water and condenses on the inner surface of the still. Line the basin with a impermeable material, such as plastic or a tarp, to prevent water from seeping into the soil.
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