is a floating scum skimmer designed for the collection of floating scum in the wastewater treatment. It consists of a submersible pump, jet-injector mechanism, and three floats. The jet-injector mechanism ensures stable suction operation even if water, air and scum are drawn simultaneously. As it is a floating type, the suction mouth can keep its relative position with the water surface, which prevents operation failure due to changes in the water level. The suction mouth can be adjusted to a depth between 0 to 60mm, so that the skimmer can efficiently suck scum with minimal amount of water. Adjustment of the depth can be done by turning the floats to right or left.