Optimization of carbon, capacity, and control for mainstream Partial Denitrification-Anammox (PdNA) applications
Open Access DepositedNutrient (i.e nitrogen and phosphorus) pollution of our waterways due to anthropogenic activities has rippling effects on the ecosystem and human society, producing algal blooms that eliminate oxygen content causing death of fish and other aquatic organisms, harm habitats, water quality, restrict recreational activities; and impair plant growth. A top priority for water resource recovery facilities (popularly known as wastewater treatment plants) is to diminish nutrient loads discharged into water bodies. This is critical to maintain water quality and purification at a rate that matches our fast-paced world! Partial denitrification-anammox (PdNA) is an innovative technology that uses naturally occurring microbes in an engineered process to convert ammonia to nitrogen gas via a short-cut pathway instead of the conventional resource intensive pathway. This shortcut nitrogen removal approach can achieve operational savings of 70 % in organic carbon and 50% in aeration, as well as provide flexibility and opportunity to gain capacity in existing plant configurations. Implementation of this PdNA process at DC Water’s Blue Plains Advanced Wastewater Treatment Plant (Washington DC, USA) will provide an estimated annual chemical cost savings of $5 million and reduce carbon emissions by 11,215 tons of CO2, equivalent to a forest five times the size of the National Mall. Learnings from this research will guide future PdNA implementations at DC Water Blue Plains AWTP and other utilities across the globe.
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LadipoObasa_gwu_0075A_16661.pdf | 2024-10-02 | Open Access |
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