Abstract: The method for treating wastewater includes a first flocculation-and-sedimentation process and a second flocculation-and-sedimentation process, wherein the first flocculation-and-sedimentation process include: passing wastewater through a first flocculation reaction tank; passing the first treated water through a third flocculation reaction tank; passing the third treated water through a fourth flocculation reaction tank; and passing the fourth treated water through a first sedimentation tank to generate fifth treated water and sludge, and the second flocculation-and-sedimentation process include: passing the fifth treated water through a fifth flocculation reaction tank to generate sixth treated water; passing the sixth treated water through a sixth flocculation reaction tank to generate sixth treated water; passing the sixth treated water through a seventh flocculation reaction tank to generate eighth treated water; and passing the eighth treated water through a second sedimentation tank to generate ninth t

Abstract: In a selective device recognition apparatus in a UPnP based home network and a method thereof performing recognition of UPnP devices differentially according to UPnP CP user's authority, by providing a network transmission possible identifier to a request message in a UPnP CP, recognizing the network transmission possible identifier by a corresponded UPnP device and displaying it on a screen of the UPnP CP user, the user can recognize a pertinent home network device easily and can perform device security selectively through the selective device recognition.

Abstract: Disclosed is a method and apparatus for providing a history of viewed broadcasting programs. The inventive method provides a history on the respective broadcasting programs viewed for a set time, thereby enabling to perform a true teaching about television viewing and to perform a precise viewing rate search using the viewing times of a specific broadcasting program.

Abstract: In a selective device recognition apparatus in a UPnP based home network and a method thereof performing recognition of UPnP devices differentially according to UPnP CP user's authority, by providing a network transmission possible identifier to a request message in a UPnP CP, recognizing the network transmission possible identifier by a corresponded UPnP device and displaying it on a screen of the UPnP CP user, the user can recognize a pertinent home network device easily and can perform device security selectively through the selective device recognition.

Abstract: In a mobile communication terminal, a network access system and a method thereof using the same capable of controlling an UPnP device and connecting it to an external network, by including an UPnP control point application and a network conversion function for converting an IP address authenticated in a home network into an IP address of an external network in an OS of a mobile communication terminal, a user can easily control UPnP devices even in moving and connect them to an external network through the Internet without using an additional Internet access equipment. In addition, by using a Korean, English, number and special character input function and a voice recognition function of a mobile communication terminal, the user can control the UPnP devices efficiently.