Details zur Publikation

Kategorie Textpublikation
Referenztyp Zeitschriften
DOI 10.1016/j.ecoleng.2008.03.002
Titel (primär) Energy requirements for nitrification and biological nitrogen removal in engineered wetlands
Autor Austin, D.; Nivala, J.
Quelle Ecological Engineering
Erscheinungsjahr 2009
Department UBZ
Band/Volume 35
Heft 2
Seite von 184
Seite bis 192
Sprache englisch
Keywords Design; Engineered wetland; Energy requirement; Nitrification; Nitrogen removal; Subsurface flow wetland; Tidal flow wetland; Pulsed flow wetland
Abstract Nitrogen in wastewater degrades aquifer and surface water quality. To protect water quality in the United States, nitrogen discharge standards are strict: typically 1.0 mg/L NH4-N for discharge to surface water and 10 mg/L total nitrogen (TN) for discharge to soil. Passive constructed wetland treatment systems cannot meet the nitrification standards discussed in this paper, using loading rates commonly considered to be cost-effective based on economic conditions in North America. Although partial nitrification can be achieved with some vertically or intermittently loaded, subsurface flow (SSF) wetlands, complete nitrification cannot be achieved in these passive wetland treatment systems. Engineered wetlands (EWs) use mechanical power inputs via pumping of air or water to nitrify wastewater, and have evolved in large part to nitrify wastewater. The design energy requirements for these power inputs have yet to be described in the wetland treatment literature. Our paper investigates the energy and area requirements of three wetland technologies: aerated subsurface flow, tidal flow, and pulse-fed wetland treatment, compared to a mechanical activated-sludge treatment system.
dauerhafte UFZ-Verlinkung
Austin, D., Nivala, J. (2009):
Energy requirements for nitrification and biological nitrogen removal in engineered wetlands
Ecol. Eng. 35 (2), 184 - 192 10.1016/j.ecoleng.2008.03.002