S-Select sludge conditioning technology from World Water Works is designed to reduce floating or bulking sludge in conventional activated sludge (CAS) wastewater treatment systems. The technology is applicable to any activated sludge plant, municipal or industrial, with poor or inconsistent performing clarifiers. The customizable process can be installed while a plant is operating. It requires a small footprint, uses little power and requires no chemicals. 800/607-7973; www.worldwaterworks.com.