Planting the Seed to Success: Commissioning and Optimizing Nitrogen Removal at the Hyperion AWPF

Presentation Description: This presentation explores the startup and optimization journey of nitrogen removal in a Biological Nutrient Removal–Membrane Bioreactor (BNR-MBR) system at the Los Angeles Sanitation and Environment (LASAN) Hyperion Advanced Water Purification Facility (HAWPF). Designed to support advanced wastewater treatment goals, the BNR-MBR configuration integrates biological nutrient removal with membrane filtration, offering a compact and efficient solution for high-quality effluent production.

The session will chronicle the progression from initial seeding through to stable operation, highlighting key lessons learned along the way. Attendees will gain insights into the practical challenges encountered during startup, including biomass acclimation, process variability, and membrane integration. The presentation will detail the operational strategies and process adjustments implemented to overcome these hurdles, such as aeration tuning, nutrient loading control, and membrane cleaning protocols.

A central focus will be the comparative evaluation of nitrogen removal efficiency under two distinct control modes: Dissolved Oxygen (DO) control and Ammonia-Based Aeration Control (ABAC). Performance data will be shared to illustrate how each mode influenced system dynamics, nitrification-denitrification balance, and overall treatment outcomes. The analysis will provide a nuanced understanding of how control strategies impact nitrogen removal in integrated BNR-MBR systems.

Troubleshooting approaches that proved effective in resolving issues such as process instability, membrane fouling, and nutrient imbalance will also be discussed. These insights are intended to support engineers and operators working with similar configurations, offering practical guidance for optimizing performance and reliability.

By sharing real-world experiences and performance outcomes, this presentation aims to contribute to the broader knowledge base of advanced wastewater treatment. It is particularly relevant for professionals involved in the design, operation, and optimization of BNR-MBR systems, and those seeking to enhance nitrogen removal efficiency in complex treatment environments.