Clarifiers are settling tanks built with mechanical means for continuous removal of solids being deposited by sedimentation. A clarifier is generally used to remove solid particulates or suspended solids from liquid for clarification and (or) thickening. Concentrated impurities, discharged from the bottom of the tank are known as sludge, while the particles that float to the surface of the liquid are called scum.
Water has several purposes in a manufacturing or processing facility. It can be used for cooling machinery, washing down equipment or in processing. Sometimes, this water picks up oil or grease from surrounding machinery and equipment. Regardless of whether the facility chooses to reuse the water or send it to the city treatment plant, it has to remove the oil. Some plants, however, are not properly equipped to effectively remove oil.
An oil skimmer is the perfect solution. It is a piece of equipment that continuously removes oil from the surface of water. Oil skimmers are used in a wide variety of industries such as steel, biodiesel, manufacturing, food processing, wastewater treatment and utility. However, not every facility utilizes an oil skimmer. Below is a guide to knowing why an oil skimmer is needed and how to properly choose the correct skimmer.