The Richland Creek Landfill is a large municipal solid waste landfill located in Buford, Georgia. Leachate collected from the landfill is discharged to the local water reclamation facility under a discharge permit. The permit established effluent limitations for certain parameters, most notably ammonia nitrogen and biochemical oxygen demand (BOD). The permit imposes surcharge limits for these constituents when there concentrations are over the permitted limits.
Geosyntec's Scope of Services
Geosyntec conducted a thorough review of the landfill's leachate generation and analytical parameters to provide a baseline of conditions present that are causing the surcharges to be enforced for the discharge waste stream. Using the information gathered during the review, Geosyntec conducted an engineering study to determine methods for reducing the ammonia nitrogen and BOD in the leachate effluent. The study reviewed several pre-treatment technologies that could achieve the desired results and ultimately recommended a sequencing batch reactor (SBR) system for treatment of the leachate.
Upon completion of the engineering study, BFI selected Geosyntec to prepare the engineering design of the SBR system for the facility. We worked with multiple equipment manufacturers to determine the appropriate SBR size to achieve the desired reduction in concentrations, while designing a system that could utilize existing infrastructure present at the facility to reduce capital cost. The final design included drawings, specifications and bid documents for the construction bidding. During the construction phase, Geosyntec provided a variety of services including: submittal reviews, construction management services, construction oversight, system start-up and commissioning, operation and training, and preparation of record drawings.
The Richland Creek Landfill had been paying a significant surcharge due to BOD and ammonia concentrations in their discharge. Geosyntec's design of the new SBR reduced the concentrations of these constituents, eliminating this surcharge. Additionally, Geosyntec incorporated existing infrastructure into the design of the system to significantly reduce capital costs.