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Frontiers of Environmental Science & Engineering >> 2012, Volume 6, Issue 2 doi: 10.1007/s11783-011-0280-z

Upgrade of three municipal wastewater treatment lagoons using a high surface area media

1. Meridian Aquatic Technology, LLC. 4061 Powder Mill Road, Suite 100, Calverton, MD 20705, USA; 2. Department of Civil and Environmental Engineering, University of Cincinnati, Cincinnati, OH 45221, USA; 3. Institute of Nuclear and New Energy Technology, Tsinghua University, Beijing 100084, China

Available online: 2012-04-01

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Lagoon-based municipal wastewater treatment plants (WWTPs) are facing difficulties meeting the needs of rapid population growth as well as the more stringent requirements of discharge permits. Three municipal WWTPs were modified using a high surface area media with upgraded fine-bubble aeration systems. Performance data collected showed very promising results in terms of five-day biochemical oxygen demand (BOD ), ammonia (NH ) and total suspended solids (TSS) removal. Two-year average ammonia effluents were 4.1 mg·L for Columbia WWTP, 4 mg·L for Larchmont WWTP and 2.1 mg·L for Laurelville WWTP, respectively. Two- year average BOD effluents were 6.8, 4.9 and 2.7 mg·L , and TSS effluents were 15.0, 9.6 and 7.5 mg·L . The systems also showed low fecal coliform (FC) levels in their effluents.

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