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Nitrogen Balance and Cycling in an Ecologically Engineered Septage Treatment System by M.Robert Hamersley; Brian L Howes; David S White; Susan Johnke; Dale Young; Susan B Peterson; John M Teal is a Environmental Science article available to read on EtoBox.

What is Nitrogen Balance and Cycling in an Ecologically Engineered Septage Treatment System about?

Septage disposal presents technical difficulties due to its high concentrations of solids and nutrients. Many existing treatment options create excessive waste solids or fail to remove nutrients, which, upon discharge, impact groundwater and aquatic systems. This study evaluated nitrogen removal in an ecologically engineered wastewater treatment system (the Solar Aquatic SystemTM [SAS]) that combines aeration and activated solids recycling with aquatic and constructed wetlands treatment components. A septage-treating SAS in coastal Massachusetts, USA, produced an effluent of 113 mg/l chemical oxygen demand, 16 mg/l total suspended solids (TSS), 0.56 mg/l ammonium nitrogen, 6.1 mg/l total nitrogen and 1.5 mg/l total phosphorus. Waste solids production was low at 0.81 g/g influent TSS, including harvested plant biomass. Primary treatment was by biological oxidation with activated solids, followed by gravity clarification. Further oxidation and ammonium removal occurred in planted aerated aquatic tanks enclosed in a greenhouse, followed by secondary gravity clarification. Nitrogen removal in the aquatic tanks was limited by denitrification, which was limited by the availability of ana

Who reads Nitrogen Balance and Cycling in an Ecologically Engineered Septage Treatment System?

Author

M.Robert Hamersley; Brian L Howes; David S White; Susan Johnke; Dale Young; Susan B Peterson; John M Teal

Publisher

Elsevier Science; Elsevier ; Elsevier BV (ISSN 0925-8574)

Published

2001

Language

EN

Field

Environmental Science (Physical Sciences)