title: Ozonation of wastewater sludge for reduction and recycling.
abstract: An ozone treatment system was introduced as an alternative method for municipal sludge treatment and disposal. A pilot-scale facility was built to investigate the feasibility of the ozonation for sludge reduction and recycle. The system consists of three main parts; advanced wastewater treatment, sludge ozone treatment and belt press dewatering. Ozonation of wastewater sludge resulted in mass reduction by mineralization as well as volume reduction by improvement of dewatering characteristics. The supernatant of the ozonated sludge, consisting of solubilized organics and micro-particles, proved to be an effective carbon source for denitrification. A simple economic assessment reveals that the ozonation process can be more economical than incineration for sludge treatment and disposal at small- and medium-sized wastewater treatment plants.
authors.affiliation: Future Technology Research Division, Korea Institute of Science and Technology P.O. Box 131, Cheongryang, Seoul, 136-791, Korea.
authors.forename: K H
authors.initials: KH
authors.lastname: Ahn
authors.forename: K Y
authors.initials: KY
authors.lastname: Park
authors.forename: S K
authors.initials: SK
authors.lastname: Maeng
authors.forename: J H
authors.initials: JH
authors.lastname: Hwang
authors.forename: J W
authors.initials: JW
authors.lastname: Lee
authors.forename: K G
authors.initials: KG
authors.lastname: Song
authors.forename: S
authors.initials: S
authors.lastname: Choi
mesh_terms: D003247:Conservation of Natural Resources; D005160:Facility Design and Construction; D010083:Oxidants, Photochemical / Q000737:chemistry*; D010126:Ozone / Q000737:chemistry*; D010316:Particle Size; D012995:Solubility; D014865:Waste Disposal, Fluid / Q000379:methods*
chemical_list: D010083:Oxidants, Photochemical; D010126:Ozone