Combined treating method for reclaimed water reuse

The present invention belongs to the field of environmental engineering, and particularly relates to a high security reclaimed water treatment compositions. Recycled water back with the combination of the invention processing method, a combination of the following: the use of secondary sewage treatment plant effluent or water to reach the same quality requirements as the water source, through preozonation, coagulation, sedimentation, sand filtration, microfiltration, ozone oxide, activated carbon adsorption, reuse after disinfection. Features of the invention is adaptable to changes in water quality, flexible operation, safe water recycled water, water quality is good, easily accepted by users, users of reclaimed water can reduce concerns about water safety, and help expand the reclaimed water market.