Biological treatment requires a large volume of oxygen to maintain appropriate activities of aerobic microorganisms; therefore, it consumes an extremely large amount of energy (electric power). >> In oil-water separation processing using specific gravity difference, introducing a tough bubbler will promote a separation, and improve processing capacity and improve separation performance. >> The major issues in maintenance at the wet-paint booth are summarized in the following three points. Installing Tough Bubblers provide positive effects on these issues. >> GENKI is a wastewater treatment agent with an immediate, remarkable improvement for activated sludge method, MBR, and Biofilm treatment. >>