Abstract: A water quality purification system for a hybrid artificial wetland includes a first aerobic artificial wetland, an anaerobic artificial wetland, and a second aerobic artificial wetland. Here, the first aerobic artificial wetland induces a vertical flow of water, which is to be purified, and allows pollutants to be removed. The anaerobic artificial wetland induces a horizontal flow of treated water which is introduced from the first aerobic artificial wetland, and allows pollutants to be further removed. Additionally, the second aerobic artificial wetland induces a vertical flow of treated water which is introduced from the anaerobic artificial wetland, and allows air to be supplied inwardly such that the amount of dissolved oxygen of the introduced treated water increases.

Abstract: A security system comprises: a surveillance object selection apparatus comprising at least one first camera, a first memory for receiving an image of an object from the first camera and storing the image, a first control unit for determining as unrecognizable the image of the object stored in the first memory based on predetermined criterion and generating a surveillance object selection signal, and a transmitting unit for transmitting the surveillance object selection signal according to instructions from the first control unit; and a surveillance object tracking apparatus comprising a receiving unit connected to the surveillance object selection apparatus in wired or wireless manner to receive the surveillance object selection signal, at least one second camera, and a second control unit for controlling the second camera to track and surveil the object determined as unrecognizable upon receipt of the surveillance object selection signal from the receiving unit.

Abstract: A water quality purification system for a hybrid artificial wetland includes a first aerobic artificial wetland, an anaerobic artificial wetland, and a second aerobic artificial wetland. Here, the first aerobic artificial wetland induces a vertical flow of water, which is to be purified, and allows pollutants to be removed. The anaerobic artificial wetland induces a horizontal flow of treated water which is introduced from the first aerobic artificial wetland, and allows pollutants to be further removed. Additionally, the second aerobic artificial wetland induces a vertical flow of treated water which is introduced from the anaerobic artificial wetland, and allows air to be supplied inwardly such that the amount of dissolved oxygen of the introduced treated water increases.