Samsung Electronics Co., Ltd.

Samsung Engineering Co., Ltd.

Dae Soo Park

Jae Hoon Choi

Jae Hong Kim

Jae Hyung Park

Ji Won Chun

Jang Hoon Lee

Yong Xun Jin

Je Hun Kim

Seung Joon Chung

Jae Dong Hwang

Jong Keun Yi

Su Hyoung Cho

Kyu Won Hwang

June Yurl Hur

Seok Hwan Hong

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

Various embodiments of the present invention relate to a method for accurately detecting, by an electronic device, that a tray for loading a SIM card is detached. An electronic device according to various embodiments of the present invention may comprise: a tray for loading a SIM card; a first processor electrically connected to the tray; and a second processor electrically connected to the first processor, wherein the first processor is configured to transfer a pre-event to the second processor when a detachment event for the tray is detected, and the second processor is configured to identify, in each designated period, whether the SIM card is erroneous; and delay identification of whether the SIM card is erroneous, in response to reception of the pre-event. The present invention may further include various other embodiments.

Electronic device in which tray for loading SIM card is inserted, and control method therefor

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Gyeonggi-do, South Korea

Dae Soo Park