Patent ID: 8007665

Claim:
An advanced wastewater treatment device having movable dividers, comprising: a wastewater treatment bath comprising: an anaerobic bath in which phosphorus fed from raw water is discharged; an anoxic bath in which denitrification of nitrate nitrogen returning from the aerobic bath is performed under a condition that air is not supplied; and an aerobic bath in which decomposition and nitrification of organic matter is performed; a first movable divider separating the anaerobic bath from the anoxic bath, and movably provided in the wastewater treatment bath to change relative volume of the anaerobic bath and the anoxic bath; a second movable divider separating the anoxic bath from the aerobic bath, and movably provided in the wastewater treatment bath to change relative volume of the anoxic bath and the aerobic bath; a divider moving unit for moving the first and second movable dividers; an air supply unit supplying air to the aerobic bath and comprising: a plurality of air nozzles provided from a bottom of the aerobic bath to a bottom of the anoxic bath; an air pump forcibly supplying air to the air nozzles; and a plurality of valves provided to correspond to the air nozzles, respectively, thus independently controlling supply of air from the air pump to each of the air nozzles; a recycling unit for recycling activated sludge of the aerobic bath to the anoxic bath; at least one contact sensor detecting a position of the second movable divider; and a control unit determining the position of the second movable divider based on detected data transmitted from the contact sensor, and providing a control signal to selectively control on/off operation of respective ones of the valves dependent upon the detecting resulting in only the valves which correspond to the air nozzles located in the aerobic bath divided from the anoxic bath by the second movable divider being open, thus supplying air only through the air nozzles located in the aerobic bath.