title: A study on the effects of ozone dosage on dissolved-ozone flotation (DOF) process performance.
abstract: Dissolved-ozone flotation (DOF) is a tertiary wastewater treatment process, which combines ozonation and flotation. In this paper, a pilot-scale DOF system fed by secondary effluent from a wastewater treatment plant (WWTP) in China was used to study the effect of ozone dosage on the DOF process performance. The results show that an ozone dosage could affect the DOF performance to a large extent in terms of color and organic matter removal as well as disinfection performance. The optimal color and organic matter removal was achieved at an ozone dosage of 0.8 mg/l. For disinfection, significant improvement in performance could be achieved only when the organic matter removal was optimal. The optimal ozone dosage of at least 1.6 mg/l was put forward, in this case, in order to achieve the optimal color, turbidity, organic matter and disinfection performance.
authors.affiliation: School of Environmental and Municipal Engineering, Xi'an University of Architecture and Technology, 710055 Xi'an, China E-mail: jinxinjason2006@163.com.
authors.forename: Xin
authors.initials: X
authors.lastname: Jin
authors.affiliation: School of Environmental and Municipal Engineering, Xi'an University of Architecture and Technology, 710055 Xi'an, China E-mail: jinxinjason2006@163.com.
authors.forename: Pengkang
authors.initials: P
authors.lastname: Jin
authors.affiliation: School of Environmental and Municipal Engineering, Xi'an University of Architecture and Technology, 710055 Xi'an, China E-mail: jinxinjason2006@163.com.
authors.forename: Xiaochang
authors.initials: X
authors.lastname: Wang
mesh_terms: D002681:China; D003116:Color; D004203:Disinfection / Q000379:methods*; D009930:Organic Chemicals / Q000302:isolation & purification; D010126:Ozone / Q000737:chemistry*; D062065:Wastewater / Q000737:chemistry; D014874:Water Pollutants, Chemical / Q000302:isolation & purification; D018508:Water Purification / Q000379:methods*
chemical_list: D009930:Organic Chemicals; D010126:Ozone; D062065:Wastewater; D014874:Water Pollutants, Chemical