New WERF Final Report: Weather Impacts on BNR in Resource Recovery Facilities

For a copy of the full report (free to subscribers/$50 for non-subscribers), visit the WERF website.

(FAIRFAX, VA – June 2, 2015) – A new WERF Final Report titled “Evaluating the Impacts of Cold and Wet Weather Events on Biological Nutrient Removal in Water Resource Recovery Facilities” is now available online.

The report, which utilized Hazen and Sawyer’s Paul Pitt and Wendell Khunjar as principal investigators, details work conducted with 12 WRRFs that experience adverse weather events to identify critical challenges they face when attempting to maintain optimal BNR
performance during these weather events. As part of this work, the project team also compiled and evaluated strategies that are currently implemented by BNR facilities for mitigating these impacts.

Results from these evaluations indicate that strategies that employ biomass storage and recirculation are effective for helping plants maintain BNR capacity during and after adverse weather events.

For more information, or to obtain a copy of the full report (free to subscribers/$50 for non-subscribers), visit the WERF website.

Since our founding in 1951, Hazen and Sawyer has focused on two things: providing safe drinking water and controlling water pollution. Our range of services encompasses “all things water” including the planning, design, and construction management of water and wastewater-related projects – from clean water treatment, storage, and distribution to wastewater and stormwater collection, treatment, and reuse.

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