Former sewage lagoons are converted into a valuable resource that provides wildlife habitat and recreational opportunities as it cools and cleans water that is discharged into the Tualatin River. The Forest Grove Wastewater Treatment facility includes a conventional wastewater treatment plant that is capable of operating to remove phosphorous, a vertical wetland designed to transform ammonia to nitrate, and an engineered wetland for cooling. In this study we propose to use a variety of techniques to characterize dissolved and particulate effluent organic matter from the two sample points to ascertain if the BOD and TSS in the effluent of the WWTP (sample point 1) remains in the water through the two wetlands to exit the system at sample point 2. We used Gas Chromatography Mass Spectrum (GC-MS) and Fluorescent Excitation Emission Spectroscopy (EEM) to characterize the wastewater samples. There was a reduction of about 10 - 30% in fatty acids concentrations in NST compared to FG effluent samples. Highly reduction the intensity of the fluorescent in NST compared to FG effluent samples, most likely is related to the bioavailability of those fluorescent organic compounds degradation during wastewater treatment.
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 clean_water_conference_azizian_3.pdf | 1.34 MB |