Kalvosuodatus
Kalvosuodatus, also known as "cake filtering" or "cake filtration," is a traditional Finnish method of purifying water by passing it through a layer of natural materials, typically consisting of a cake-like structure of sand, gravel, and organic substances. This technique has been used for centuries in rural areas of Finland and other Nordic countries, particularly in regions where access to modern water treatment facilities is limited.
The process involves creating a filtration bed, often in a wooden or stone container, where water is
Kalvosuodatus is often employed in small-scale settings, such as private homes, cabins, or rural households. It
The effectiveness of kalvosuodatus depends on several factors, including the quality of the materials used, the