Ultrafiltration is a water purification process that uses a membrane to separate particles and impurities from liquids. The membrane has tiny pores that allow water and small molecules to pass through while blocking larger particles, such as bacteria, viruses, and suspended solids. This method is commonly used in various applications, including drinking water treatment and wastewater management. In ultrafiltration, pressure is applied to push the liquid through the membrane. The result is clean water on one side and concentrated contaminants on the other. This technique is efficient and effective, making it a popular choice for industries that require high-quality water.