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Long-term performance summary for the Boot Wetland Treatment System
J R Martin1, C H Keller, R A Clarke
1CH2M HILL, Gainesville, Florida 32614, USA.
Summary
The Boot Wetland Treatment System (WTS) effectively removes nitrogen and phosphorus from wastewater effluent. This Florida cypress-gum wetland demonstrates consistent nutrient removal, vital for water quality improvement.
Area of Science:
- Environmental Science
- Wetland Ecology
- Water Quality Management
Background:
- The Boot WTS is a 46.5-ha cypress-gum wetland in Polk County, Florida.
- It has received advanced secondary treated effluent from Poinciana Wastewater Treatment Plant No. 3 since 1984.
- Comprehensive operational monitoring has been conducted since 1990.
Purpose of the Study:
- To assess the nutrient removal efficiency of the Boot WTS.
- To estimate the first-order removal rates for total nitrogen (TN) and total phosphorus (TP).
- To compare removal rates with other forested treatment wetlands.
Main Methods:
- Analysis of available flow and water quality data from the Boot WTS.
- Calculation of influent and effluent concentrations for TN and TP.
- Estimation of first-order removal rate constants (k) for TN and TP.
Main Results:
- Influent TN and TP averaged approximately 10.0 mg/L and 2.5 mg/L, respectively.
- Effluent TN and TP averaged 1.8 mg/L and 1.2 mg/L.
- Estimated first-order removal rates were 14 m/y for TN and 1.8 m/y for TP, within the range for forested wetlands.
Conclusions:
- The Boot WTS consistently removes significant amounts of nitrogen and phosphorus.
- The estimated removal rates indicate effective nutrient management by the wetland.
- Biochemical oxygen demand and suspended solids showed minimal reduction, suggesting they are near background levels.
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