Taking Ammonia-Based Aeration Control to the Next Level - Real World Experience and Lessons Learned

摘要

The feedback controller appears a better application in small wastewater systems where the transport lag is smaller, less of a concern to operators or where it is less impactful on effluent quality. The transport lag of > 3 hours is large and undesirable to operators, who observe quickly increasing loads, but an unresponsive aeration controller. Measures can be taken to preemptively and automatically begin aeration, but these modifications add layers of complexity to a control method whose stated advantage is being less complex than the model-based feedforward controller system.