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Development of a Simplified Nitrogen Mass Balance Model in a Macroalgae Dominated System

by Michael D. Curtis, Univ of Connecticut, Dep of Civil, Engineering, Storrs, CT, USA,
George E. Hoag, Univ of Connecticut, Dep of Civil, Engineering, Storrs, CT, USA,
Lee E. Dunbar, Univ of Connecticut, Dep of Civil, Engineering, Storrs, CT, USA,
Donna A. Johnson, Univ of Connecticut, Dep of Civil, Engineering, Storrs, CT, USA,



Document Type: Proceeding Paper

Part of: Environmental Engineering

Abstract:

A seasonably variable nitrogen uptake rate has been established for Ulva in Mumford Cove, Conn. This rate has been verified using three separate water quality analyses each of which assume the existence of equilibrium conditions between the macroalga population and ambient inorganic nitrogen concentrations. Quantitative relationships between POTW (Publicly Owned Treatment Works) nutrient loading and photosynthetic production have been developed for WLA purposes. Through three methods of analysis, a general inorganic nitrogen uptake rate has been developed and well verified for the warm weather months, when the most severe water quality problems exist. These efforts have led to the development of a nitrogen waste load allocation for the Groton POTW which is currently under local and federal review.

Subject Headings: Nutrient pollution | Nitrogen | Water quality | Water treatment | Water pollution | Waste treatment | Waste disposal

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