The Japan ozone Association in conjunction with the Water Re-Use Promotion Center, the Japan Water Works Association and the Japan Industrial Water Association held a seminar cover various issues related to ozone in water treatment with a focus on water reuse.
A highlight of the meeting was a tour of a water reclamation projection where over 1 MGD of water is being produced from wastewater. The water is serving various districts of Tokyo for toilet flushing and other applications. this project employs both ozone and micro-filtration membranes to treat the water to a high standard.
While this is a relatively small project, it points to increasing use of wastewater for secondary applications and to the use of ozone water treatment as one of the main components in a water reclamation system.