groundwater nitrogen Articles
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Controls on groundwater nitrogen contributions from on-site wastewater systems in coastal North Carolina
The goal of this study was to evaluate the influence of soil type and separation distance to water table on dissolved inorganic nitrogen concentrations in groundwater adjacent to on-site wastewater systems. Groundwater nitrogen species (NO3--N and NH4+-N) and groundwater levels adjacent to 16 on-site systems in three different soil groups (group I- sand, group II- coarse loams and group III ...
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Column-Based Remediation of Groundwater Nitrogen via Stimulation of Nitrification and Denitrification
ABSTRACT: A former research laboratory facility utilized a leach field for sanitary and aqueous laboratory waste. Surrounding soils and groundwater are impacted by ammonia and pH varies between 3.6 and 5. The feasibility of employing an in-situ, two-stage, nitrification/denitrification program was evaluated via a soil column study. The objectives of the study were to a) determine the efficacy of ...
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Groundwater/surface water interactions along the Curtiss reach of the San Pedro River.
A reach of the San Pedro River flows east of the Apache Powder Superfund Site and west of the Town of St. David in Cochise County, Arizona. As a result of the remedial investigations associated with the Superfund Site, this reach has been surveyed extensively since the mid-1980’s from approximately the Escalante Crossing to the Pomerene Diversion. In particular, the section downstream from ...
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Performance of a permeable reactive barrier for
in situ removal of ammonium in groundwaterNitrogen as ammonium (NH4+-N) is one of the most common nitrogen contaminants in groundwater; this is particularly true in the industrial and agricultural regions of northern China, where rapid population growth and economic development have stressed public water supplies and reduced groundwater quality. In this study, we report the performance of a zeolite permeable reactive barrier ...
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Design Considerations for Multilevel Monitoring Wells
Untitled Document ABSTRACT Much has been written about the advantages of multilevel (multiport) monitoring wells over clustered or nested monitoring wells, however, there is little published information that provides helpful hints and 'dos and don'ts' for planning successful multilevel well projects. This paper discusses the differences in both design and construction ...
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