Operation and Performance of East Greenwich, Rhode Island Nitrogen Removal Filtration System to Achieve 5 mg/L
East Greenwich WWTPEast Greenwich, Rhode Island
The nitrogen removal system utilizes a tertiary two-stage, biological filtration process where ammonia is oxidized to nitrate (nitrification) in the first stage and the nitrate is subsequently reduced to nitrogen gas (denitrification) in the second stage. The nitrogen removal system initiated operation in April 2006 and the data collected during the three compliance periods of 2006, 2007, and 2008 indicate that the process performance of the system has been excellent. In 2001, the average total nitrogen discharge to Greenwich Cove was 10.3 mg/L. Since the upgrade, the WWTP has consistently met the 5 mg/L total nitrogen permit limit, with a 51% reduction in the total nitrogen discharge. The East Greenwich WWTP Upgrade project improves the water quality of Narragansett Bay and Greenwich Cove. Source: WEFTEC 2009 Proceedings
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Posted: July 6th, 2010 | Filed under: Waste Water Treatment | Tags: Environmental Impact, Nitrogen Removal | No Comments »
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