The invention belongs to the field of
environmental engineering wastewater purification, and specifically relates to a
coating wastewater treatment system and method. The
coating wastewater treatmentsystem comprises an adjusting tank, a coagulation reaction
sedimentation tank, a
flocculation air flotation device, a neutral reaction tank, a water collecting tank, a hydroxyl solution generating
system, a
filtration adsorber and a clear water recycling tank which are connected with one another; a first dosing device is used for dosing for the coagulation reaction
sedimentation tank, and a seconddosing device is used for dosing for the
flocculation air flotation device. According to the
coating wastewater treatment method provided by the invention, coating wastewater enters into the adjusting tank, the coagulation reaction
sedimentation tank, the
flocculation air flotation device, the neutral reaction tank, the water collecting tank, the hydroxyl solution generating
system, the
filtration adsorber and the clear water recycling tank in sequence to complete
primary treatment process and deep treatment process on wastewater. The coating wastewater integral treatment equipment designed in the invention is thorough in treatment, free of secondary
pollution and short in period, and the
effluent quality meets wastewater recycling and up-to-standard
discharge standards, so that the equipment is expected to be used for industrial treatment of coating wastewater.