Please use this identifier to cite or link to this item:
Title: Dissolved nitrogen measurements at Clarks Hill Reservoir, Georgia-South Carolina
Authors: Cold Regions Research and Engineering Laboratory (U.S.)
Environmental and Water Quality Operational Studies (U.S.)
Merritt, David H.
Leggett, Daniel C.
Hydraulics Laboratory (U.S.)
Keywords: Dissolved oxygen
Gas chromatograph
Nitrogen stripping
Nitrogen supersaturation
Water quality
Publisher: Environmental Laboratory (U.S.)
Engineer Research and Development Center (U.S.)
Description: Miscellaneous Paper
Abstract: Several oxygen injection systems have been investigated to enhance the dissolved oxygen distribution in the withdrawal zone of a reservoir, thereby increasing the dissolved oxygen concentration in the downstream area. Additionally, oxygen injection could result in nitrogen stripping in the water column as a result of the induced changes in the relative partial pressures. A short-term field study was conducted to investigate the effect of oxygen injection on dissolved nitrogen concentrations. An innovative portable gas chromatograph system was used to measure dissolved nitrogen and the results were compared with data obtained from simpler, but less accurate systems. In the immediate vicinity of the oxygen-injection site, the nitrogen released far overshadowed the nitrogen stripped and a net increase was observed. The maximum nitrogen concentration observed in the reservoir was 111 percent of surface saturation. The increase in nitrogen concentration was apparently due to denitrification of entrained anoxic sediments.
Rights: Approved for public release; distribution is unlimited.
Appears in Collections:Miscellaneous Paper

Files in This Item:
File Description SizeFormat 
MP-E-81-3.pdf3.73 MBAdobe PDFThumbnail