A dispersed-ozone flotation (DOF) separator for tertiary wastewater treatment.
A dispersed-ozone flotation (DOF) separator was devised for a pilot study of tertiary wastewater treatment for re-use purposes. As a compact device combining coagulation, ozonation and flotation in an integrated unit, the DOF separator achieved a very high removal of SS, TOC, UV254 and colour, as well as effective inactivation of coliform and total bacteria within a short hydraulic retention time of 30 min. The finished water quality is comparable to or better than that by a conventional tertiary treatment process using coagulation, sedimentation, filtration and chlorine disinfection, and meets the quality standards for non-drinkable domestic reuse.
Jin
P K
PK
School of Environmental and Municipal Engineering, Xi'an University of Architecture and Technology, China. pkjin@xauat.edu.cn
Wang
X C
XC
Hu
G
G
D005160:Facility Design and Construction; D010126:Ozone / Q000737:chemistry*; D010865:Pilot Projects; D014874:Water Pollutants, Chemical / Q000032:analysis*; D018508:Water Purification / Q000295:instrumentation / Q000379:methods*
D014874:Water Pollutants, Chemical; D010126:Ozone