Can a solar still function with non-drinking water inputs?

Functionality with Non-Drinking Water

A solar still can purify water from various sources, including stagnant ponds, lakes, or even seawater. Although water quality may compromise efficiency, the still can distill water from non-potable sources. Efficiency may decrease when dealing with murky or contaminated water due to the presence of suspended solids or organic matter.

Construction Considerations

When constructing a solar still with non-drinking water inputs, consider the following factors: a larger collection area to compensate for decreased water quality, a longer distillation time, and a more efficient condensation system to minimize water loss. A still with a larger surface area can collect more water, but this may require additional materials and construction time. A more efficient condensation system can be achieved with a heat exchanger or a phase change material.

Example Implementation

For instance, a solar still constructed using a 10-liter plastic container with a collection area of 1 square meter can distill 1 liter of water per hour from non-drinking water with a salinity of up to 3% (3000 parts per million). However, this efficiency may decrease to 0.5 liters per hour when dealing with water containing suspended solids or organic matter.