Optimizing low-level nitrogen removal

摘要

Problematic nitrogen removal at the Bethune Point Wastewater Treatment Facility in Daytona Beach, Fla., eventually led to pilot-testing of three nonflammable supplemental carbon sources. On-line nitrate analyzers, coupled with a programmable logic controller (PLC), provided a robust process control system. The selected supplemental external carbon source best suited to the five-stage Bardenpho process, combined with the analyzers and PLC, has provided the facility with a more reliable alternative for meeting nitrogen permit limits.