nitrogen, wastewater treatment, nutrient removal, emerging contaminants
Excessive nitrogen levels pose a threat to the ecological health of water resources in the United States due to excessive algal growth that causes ecological decline. The NitrexTM denitrification filter is a low cost, low maintenance, long lasting easily installed solution that requires no chemical addition equipment and is maintenance free for many years after the installation. Over the past ten years, numerous installations have been completed in various applications such as for single-family residential, commercial (e.g., shopping center, hotel, mixed office use), campground, public school and large wastewater treatment systems. Overall average removal rates of 97%+ for nitrate (NO3-) have been attained, achieving nitrate NO3- - N effluent quality of 0.1 mg/l. The paper will present performance summaries for projects utilizing the NitrexTM Nitrogen Removal Technology.