SWI designed a free-surface flow constructed wetlands and quiescent anaerobic fermentation pit to treat municipal effluent for the Town of Dove Creek, Colorado. The system was designed to bring a 0.115 MGD flow rate with Influent BOD typically 200 mg/L and TSS typically near 350 mg/L to the following discharge limits:

BOD ................................................. 30mg/L
TSS ................................................. 75 mg/L
Fecal Coliform ....................................... 2,000/100mL
Residual Chlorine .................................... 0.5mg/L
pH. .................................................. 6.5-9.0

The constructed wetlands replaced 9600 sq. ft. of existing natural wetlands along Dove Creek under permit from the U.S. Army Corps of Engineers. The system has been operating since 1999, and has eliminated the Town's effluent disposal violations and reduced total electrical power consumption.

An added benefit to this project is the constructed wetlands provided habitat for redwing blackbirds and other native species.

This project was completed in 1999.

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