Temperature effects on wastewater nitrate removal in laboratory-scale artificial wetlands in greenhouses

Susan L. Wood, Eileen Fabian, Robert E. Graves, Robert Berghage, Jr.

Research output: Contribution to journalArticle

Abstract

Wetland effluent nitrate (NO3) concentrations fluctuate due to changes in air and wetland temperature. This work compares the effect of four temperature treatments on NO3 removal rates in planted and unplanted lab-scale wetlands. Two NO3 removal rate constant models were developed from experimental NO3 depletion data and were used to predict NO3 removal rate constants in lab-scale artificial wetlands planted with Iris pseudocorus. Nitrate removal in unplanted wetlands was negligible. Between 18 and 38 °C, k-value was a third-order polynomial function of temperature in planted systems. Based on the Arrhenius equation, k-value was a first-order exponential function of temperature between 18 and 30 °C in planted wetlands. Optimum temperature for NO3 removal in the wetlands was 30 °C. Quantification of temperature effects on lab-scale artificial wetlands can be used to enhance the design and management of greenhouse wastewater treatment wetlands.

Original languageEnglish (US)
JournalPaper - American Society of Agricultural Engineers
Volume3
StatePublished - 1997

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constructed wetlands
Wetlands
Waste Water
Nitrates
wastewater
wetlands
nitrates
greenhouses
Temperature
temperature
wastewater treatment
effluents
Iris
air
Air

All Science Journal Classification (ASJC) codes

  • Agricultural and Biological Sciences (miscellaneous)

Cite this

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abstract = "Wetland effluent nitrate (NO3) concentrations fluctuate due to changes in air and wetland temperature. This work compares the effect of four temperature treatments on NO3 removal rates in planted and unplanted lab-scale wetlands. Two NO3 removal rate constant models were developed from experimental NO3 depletion data and were used to predict NO3 removal rate constants in lab-scale artificial wetlands planted with Iris pseudocorus. Nitrate removal in unplanted wetlands was negligible. Between 18 and 38 °C, k-value was a third-order polynomial function of temperature in planted systems. Based on the Arrhenius equation, k-value was a first-order exponential function of temperature between 18 and 30 °C in planted wetlands. Optimum temperature for NO3 removal in the wetlands was 30 °C. Quantification of temperature effects on lab-scale artificial wetlands can be used to enhance the design and management of greenhouse wastewater treatment wetlands.",
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AU - Wood, Susan L.

AU - Fabian, Eileen

AU - Graves, Robert E.

AU - Berghage, Jr., Robert

PY - 1997

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N2 - Wetland effluent nitrate (NO3) concentrations fluctuate due to changes in air and wetland temperature. This work compares the effect of four temperature treatments on NO3 removal rates in planted and unplanted lab-scale wetlands. Two NO3 removal rate constant models were developed from experimental NO3 depletion data and were used to predict NO3 removal rate constants in lab-scale artificial wetlands planted with Iris pseudocorus. Nitrate removal in unplanted wetlands was negligible. Between 18 and 38 °C, k-value was a third-order polynomial function of temperature in planted systems. Based on the Arrhenius equation, k-value was a first-order exponential function of temperature between 18 and 30 °C in planted wetlands. Optimum temperature for NO3 removal in the wetlands was 30 °C. Quantification of temperature effects on lab-scale artificial wetlands can be used to enhance the design and management of greenhouse wastewater treatment wetlands.

AB - Wetland effluent nitrate (NO3) concentrations fluctuate due to changes in air and wetland temperature. This work compares the effect of four temperature treatments on NO3 removal rates in planted and unplanted lab-scale wetlands. Two NO3 removal rate constant models were developed from experimental NO3 depletion data and were used to predict NO3 removal rate constants in lab-scale artificial wetlands planted with Iris pseudocorus. Nitrate removal in unplanted wetlands was negligible. Between 18 and 38 °C, k-value was a third-order polynomial function of temperature in planted systems. Based on the Arrhenius equation, k-value was a first-order exponential function of temperature between 18 and 30 °C in planted wetlands. Optimum temperature for NO3 removal in the wetlands was 30 °C. Quantification of temperature effects on lab-scale artificial wetlands can be used to enhance the design and management of greenhouse wastewater treatment wetlands.

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