| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide equipment for controlling an aerating tank which can stabilize the concentration of dissolved oxygen in the aerating tank to provide stable treatment performance even if the quality of inflowing water changes, and a method for controlling the dissolved oxygen in the aerating tank using this equipment. SOLUTION: This equipment for controlling the concentration of dissolved oxygen in the aerating tank for treating wastewater includes a flowmeter and control valve for the raw water fed to the aerating tank, a return sludge flowmeter, a dissolved oxygen analyzer, a pressure sensor for the pressure in the aerating tank, a pressure control valve and pressure controller, an oxygen feed rate control valve and measuring instrument, a neural net optimizer for predicting the concentration of dissolved oxygen over the long term based on input process data and calculating the target value, a short term predictive PID controller for the concentration of the dissolved oxygen, and an oxygen feed rate controller.</p> |
