Sedimentation basin retention efficiencies for sediment, nitrogen, and phosphorus from simulated agricultural runoff

C. L. Edwards, Robert David Shannon, A. R. Jarrett

Research output: Contribution to journalArticle

18 Citations (Scopus)

Abstract

Simulated agricultural runoff, amended with sediment, nitrogen, and phosphorus, was passed through an experimental sedimentation basin. A series of six sequential runoff events was run through the basin for each of two treatments. The treatments consisted of one-day and three-day detention times, created using a perforated riser outlet structure. Effluent concentrations were monitored for total suspended sediment and various forms of nitrogen and phosphorus. For all runs, an average of 94% of the sediment, 76% of the nitrogen, and 52% of the phosphorus added to the inflow were retained by the basin. The three-day treatment retained significantly more sediment than the one-day treatment (p = 0.02). The majority of the sediment, nitrogen, and phosphorus was released within the first 12 h during the three-day runs and the first 4 h during the one-day runs.

Original languageEnglish (US)
Pages (from-to)403-409
Number of pages7
JournalTransactions of the American Society of Agricultural Engineers
Volume42
Issue number2
StatePublished - 1999

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Agricultural runoff
agricultural runoff
Settling tanks
Phosphorus
Sediments
Nitrogen
basins
phosphorus
sediments
nitrogen
sediment
Suspended sediments
riser
Runoff
basin
Catchments
suspended sediment
effluents
Effluents
runoff

All Science Journal Classification (ASJC) codes

  • Agricultural and Biological Sciences (miscellaneous)

Cite this

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abstract = "Simulated agricultural runoff, amended with sediment, nitrogen, and phosphorus, was passed through an experimental sedimentation basin. A series of six sequential runoff events was run through the basin for each of two treatments. The treatments consisted of one-day and three-day detention times, created using a perforated riser outlet structure. Effluent concentrations were monitored for total suspended sediment and various forms of nitrogen and phosphorus. For all runs, an average of 94{\%} of the sediment, 76{\%} of the nitrogen, and 52{\%} of the phosphorus added to the inflow were retained by the basin. The three-day treatment retained significantly more sediment than the one-day treatment (p = 0.02). The majority of the sediment, nitrogen, and phosphorus was released within the first 12 h during the three-day runs and the first 4 h during the one-day runs.",
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