title: Ozone treatment of wastewater sludge for reduction and stabilization.
abstract: Ozonation was applied to wastewater sludge for reduction and stabilization. Ozone was found to be very effective at reducing sludge and producing a useful carbon source. An ozone dose of 0.3 g/gDS fulfilled the criteria for the disinfection of class A type biosolids. The sludge treated with 0.5 gO(3)/gDS produced no hydrogen sulfide for a month at 29 degrees C. Ozonation resulted in low pH conditions, which might facilitate the mobilization of heavy metals from sludge. The results of a geotechnical investigation proved that the residuals of ozone-treated sludge did not meet the required properties required for landfill cover without the addition of quick lime.
authors.affiliation: Department of Civil and Environmental System Engineering, Konkuk University, Seoul, Korea. kypark@konkuk.ac.kr
authors.forename: K Y
authors.initials: KY
authors.lastname: Park
authors.forename: S K
authors.initials: SK
authors.lastname: Maeng
authors.forename: K G
authors.initials: KG
authors.lastname: Song
authors.forename: K H
authors.initials: KH
authors.lastname: Ahn
mesh_terms: D002244:Carbon / Q000032:analysis / Q000737:chemistry; D004203:Disinfection / Q000379:methods*; D004305:Dose-Response Relationship, Drug; D006862:Hydrogen Sulfide / Q000032:analysis / Q000737:chemistry; D006863:Hydrogen-Ion Concentration; D007723:Korea; D019216:Metals, Heavy / Q000032:analysis / Q000737:chemistry; D010126:Ozone / Q000737:chemistry* / Q000494:pharmacology; D012722:Sewage / Q000737:chemistry*; D013696:Temperature; D013997:Time Factors; D014865:Waste Disposal, Fluid / Q000379:methods*
chemical_list: D019216:Metals, Heavy; D012722:Sewage; D010126:Ozone; D002244:Carbon; D006862:Hydrogen Sulfide