Can suspended color caused by iron be removed by filtration?

Suspended color caused by iron can indeed be removed by filtration. When iron is present in water, it can exist in two primary forms: dissolved (ferrous) and particulate (ferric). If the iron is in the particulate form, it can be effectively captured and removed through various filtration methods, including simple sand filters or other types of physical filtration systems.

Filtration works by physically separating particles from the water, making it a straightforward method to reduce suspended solids and color caused by iron. Many water treatment facilities utilize filtration as a primary means of treating water to improve its clarity and color, notably in cases where iron concentrations are present.

While some situations may involve chemical treatments to convert dissolved iron into a particulate form prior to filtration, in cases where the iron is already present as suspended particles, filtration alone is sufficient to achieve the desired results.