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A Study of Nitrogen, Organic Material, and Phosphorus Removal from Domestic Wastewater Across Parallel Cold-Climate Hybrid Subsurface Flow Constructed Wetlands under Controlled Conditions

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Title: A Study of Nitrogen, Organic Material, and Phosphorus Removal from Domestic Wastewater Across Parallel Cold-Climate Hybrid Subsurface Flow Constructed Wetlands under Controlled Conditions
Author: Rode, Jedediah
Department: School of Engineering
Program: Engineering
Advisor: Zytner, Richard
Abstract: A one year cold-climate investigation was completed on parallel hybrid subsurface flow constructed wetlands under multiple flow regimes, both with and without a recycle stream, to evaluate the removal of typical wastewater parameters of concern: nitrogen, organic material, suspended solids and phosphorus from domestic wastewater. The hybrid wetlands, composed of horizontal and vertical subsurface flow constructed wetland components, included an integrated blast-furnace slag filter component for phosphorus removal. The parameter removal results were used to compare previously successful treatment models and to determine wastewater removal rate constants that may aid in the design of future hybrid constructed wetlands. The horizontal components effectively removed organic material during the winter and summer seasons, however, seasonal effects were observed. The blast-furnace slag filter did not achieve the phosphorus removal goals. The vertical components efficiently reduced organic material content during winter and summer, and nitrification rates were different, though successful, between the two seasons.
URI: http://hdl.handle.net/10214/7523
Date: 2013-09


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