The diagram below illustrates how a simple water filter is constructed and how it functions to produce clean drinking water. Write a report for a university lecturer describing the diagram below.
The provided diagram demonstrates the construction of a simple water filter as well as its function to produce potable water. It is noticeable that water is treated through 5 main steps, starting with impure water and finishing with drinkable water from the tap.
The system consists of 2 separate tanks connected with each other through a tube. The top of the first tank is covered by a thin round lid and its bottom half is filled with 3 layers of substances, namely, sand, charcoal, and gravel. The second tank serves as a storage container of filtered water with a built-in tap.
At the beginning of the process, raw water is poured into the first tank. After that, the water goes down through the sand layer, charcoal layer, and gravel layer in chronological order. The waste from impure water is trapped within the given layers, enabling the process of removing impurities from water. Subsequently, filtered water is transferred to the second tank for storing purpose through a conduit. At this stage, water is ready for use and can be dispensed by using the tap.