Samsung Electronics Co., Ltd.

Samsung Engineering Co., Ltd.

Je Hun Kim

Jae Hoon Choi

Jae Hyung Park

Ji Won Chun

Yong Xun Jin

Dae Soo Park

Jae Dong Hwang

Jong Keun Yi

Su Hyoung Cho

Kyu Won Hwang

Seok Hwan Hong

June Yurl Hur

Seung Joon Chung

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 (S); performing a first purification by passing the mixed wastewater through a flocculation-sedimentation unit (S); performing a second purification by passing an effluent of the flocculation-sedimentation unit through a membrane bioreactor (MBR) (S); performing a third purification by passing an effluent of the MBR through a reverse-osmosis membrane unit (S); and reusing an effluent of the reverse-osmosis membrane unit as cooling water or industrial water (S).

Method and apparatus for reusing wastewater

A multifunctional push-pull mop includes a base plate, a support member, and an elastic member. A user can bring the base plate to which a cleaning cloth is attached into close contact with a floor, a wall, a ceiling, or the like, using a small force, and when the user moves the base plate to which the cleaning cloth is attached from a boundary portion between a floor and a wall or between a wall and a ceiling to the floor, wall, or ceiling, the base plate can be rotated by the elastic restoration force of the elastic member to instantly come into close contact with the floor, wall, or ceiling, thereby allowing the user to conveniently move the base plate from the boundary portion of the floor, the wall, the ceiling, or the like, without detaching the base plate therefrom.

Multifunctional push-pull mop

Growing community of inventors

Hwaseong, South Korea

Je Hun Kim