Aeration optimisation through nitrification control

摘要

Aeration is usually controlled based on dissolved oxygen (DO) electrodes.The main principle behind that measurement method is a function of electrical current and the amount of oxygen reacting at the cathode's surface. However, tests undertaken at the University of California, Los Angeles (UCLA) have revealed a DO probe lag in estimating the oxygen trans- fer parameter in clean water that can, in real wastewater conditions, be greater than lVo.The second way to control aeration is based on the ammonia concentration in the effluent.