Question

For Steps 3, 4, and 5 of the water treatment process, describe the property of the substances in the water that is used to remove each substance from the water.

Answer 1

Different properties of substances in water are used in Steps 3, 4, and 5 of the water treatment process to remove each substance from the water.

Step-by-step explanation:

For Steps 3, 4, and 5 of the water treatment process, different properties of the substances in the water are used to remove each substance from the water. In Step 3, filtration is used to remove small particles from the water. This is done by passing the water through layers of sand, gravel, and charcoal, which trap and remove the particles.

In Step 4, disinfection is used to kill harmful bacteria in the water. This can be done through various methods such as treatment with chlorine, ozone, ultraviolet light, or bleach. Disinfection helps make the water safe for drinking.

In Step 5, additional filtration is often used to further reduce organic matter in the water. This can be achieved by filtering the water through substances like carbon filters, such as charcoal, which remove organic particles.

Answer 2

Steps 3 to 5 of the water treatment process use sedimentation for gravity-based separation, filtration to block larger particles, and disinfection targeting the chemical susceptibility of microbes.

Step-by-step explanation:

In steps 3, 4, and 5 of the water treatment process, various properties of substances are targeted to remove them from water. In step 3, sedimentation is used, leveraging the property of gravity acting on the density differences between water and suspended solids. Solids settle to the bottom due to higher density and can be removed. Step 4 involves filtration, where the water is passed through layers of sand, gravel, and sometimes activated charcoal.

This process makes use of the size exclusion principle: the pores in the filters are small enough to block particles larger than water molecules. Finally, step 5 focuses on disinfection, utilizing the chemical susceptibility of microbes. Chlorine or UV light is used to neutralize harmful pathogens, which either get destroyed by chemical reactions or irradiation.