METHOD OF CONTROLLING DISSOLVED OXYGEN LEVEL IN WASTE WATER TREATMENT SYSTEM

摘要

A method for adjusting dissolved oxygen concentration in a waste treatment facility is provided to reduce the amount of electric power after offsetting flow rate burden by maximizing oxygen utilization efficiency. A method for adjusting dissolved oxygen concentration in a waste treatment facility having an aeration tank includes the followings: preparing a circulation line(40) circulating waste water stored in the aeration tank; installing an oxygen dissolving unit(70) dissolving the oxygen from an oxygen source; generating high concentration waste water in which oxygen is dissolved with an oxygen dissolving device; and adjusting concentration of the dissolved oxygen in the aeration tank.