The provided diagram illustrates the construction and operational mechanism of a simple water-filter assembly designed to produce clean drinking water. The system consists of two primary components: a plastic barrel containing filtration media and a separate storage drum for the treated water.
Overall, the process is a gravity-fed system where water is purified by passing through three distinct layers of materials. The assembly is designed to ensure that raw water is effectively filtered before it is transferred to a storage container for later use.
In the first stage, water is poured into the top of the plastic barrel, which is covered by a plastic lid. Inside this barrel, the water must percolate through three sequential layers: sand at the top, followed by charcoal, and finally gravel at the base. These layers act as a physical and chemical filter to remove impurities. Once the water has passed through these materials, it is collected at the bottom of the barrel.
Subsequently, the filtered water is directed through a pipe that connects the base of the filtration barrel to the storage drum. The water enters the storage drum and is held there until needed. Finally, the clean drinking water can be dispensed via a tap located at the bottom of the storage drum into a glass or container.