Filtration

Filtration

During the process of filtration, contaminants and unwanted fluid and solid substances are separated from the primary fluid. Basic filtration systems consist of a filter through which the contaminated fluid passes. The filter media allows the passage of the fluid while simultaneously preventing the passage of the contaminants.

The process of filtration is used to filter hydraulic and quench oil, diesel fuel, machine tool coolant, and numerous other industrial fluids. Industrial filtration remains necessary to purify substances like air and water, especially drinking water. Industrial filtration also is common in the wastewater/sewage treatment, food and beverage processing, automotive/trucking, agricultural, pharmaceutical, chemical, mining, and pulp and paper industries.

Different processes are used to treat various fluids during filtration. Vacuum filters, which include drum, disc, horizontal belt, tilting, and table filters, are simple, reliable machines used in the chemical, food and pharmaceutical industries. There are several different methods of water filtration, including electrodialysis, electrodialysis reversal, and reverse osmosis. Other filtering methods include electrodeionization and ultrafiltration processes.