How do commercial fuel oil polishing systems operate?

Commercial fuel oil polishing systems operate by continuously or periodically circulating fuel from storage tanks through a filtration and purification process. The system removes contaminants such as water, sludge, and particulates using a combination of water separators, coalescers, and fine filters. These systems are often automated, with sensors monitoring fuel quality and triggering filtration cycles when contamination levels exceed thresholds. By maintaining fuel quality, these systems ensure that backup generators, boilers, or industrial engines operate efficiently, reducing the risk of damage from contaminated fuel.