A bag filter is an air or liquid filtration system designed to remove dust, particulates, and contaminants from industrial processes. It consists of a housing containing filter bags made of materials like polyester, polypropylene, or fiberglass, which trap impurities as the fluid or air passes through. Bag filters are widely used in industries such as pharmaceuticals, chemicals, food processing, and wastewater treatment to ensure clean and efficient operations. They offer advantages like high filtration efficiency, easy maintenance, and cost-effectiveness. Regular replacement or cleaning of filter bags is essential to maintain performance and prevent clogging, ensuring long-term system reliability.