Abstract: Disclosed are a method and apparatus for reusing wastewater. The method for reusing wastewater disclosed herein includes: generating a mixed wastewater by mixing multiple types of wastewater (S20); performing a first purification by passing the mixed wastewater through a flocculation-sedimentation unit (S40); performing a second purification by passing an effluent of the flocculation-sedimentation unit through a membrane bioreactor (MBR) (S60); performing a third purification by passing an effluent of the MBR through a reverse-osmosis membrane unit (S80); and reusing an effluent of the reverse-osmosis membrane unit as cooling water or industrial water (S100).

Abstract: A coating composition having excellent non-combustibility and weather resistance. The coating composition may include a silicone modified polyester resin, a curing agent, a pigment, and a flame retardant, wherein the silicone modified polyester resin is prepared by condensation polymerization of a silicone intermediate, an alcohol monomer, and an acid monomer, the alcohol monomer includes a trifunctional or lower aliphatic alcohol and a tetrafunctional aliphatic alcohol in a weight ratio of 80 to 60:20 to 40, the acid monomer includes an aromatic acid and an aliphatic acid in a weight ratio of 20 to 40:80 to 60, and the mixing ratio of the alcohol monomer and the acid monomer is 1.0 to 2.