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 language||English (US)|
|Journal||Paper - American Society of Agricultural Engineers|
|State||Published - Dec 1 1997|
|Event||Proceedings of the 1997 ASAE Annual International Meeting. Part 1 (of 3) - Minneapolis, MN, USA|
Duration: Aug 10 1997 → Aug 14 1997
All Science Journal Classification (ASJC) codes
- Agricultural and Biological Sciences (miscellaneous)