What is the difference between a purifier and clarifier?
A separator can operate as a purifier or as a clarifier. In most cases separators will operate as purifiers. A purifier separates three phases: solid particles (sludge) and two insoluble liquids (oil and water). A purifier is mainly used when sludge has to be separated from oil together with smaller quantities of water from sludge. A clarifier separates two phases: solid particles (sludge) from a liquid (oil). In that case the water outlet is simply blocked by using a level ring to seal it off. In case there is some water it will be removed together with the sludge.
