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Description: Low-Energy Nitrogen Removal in Intensified Wetlands
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Description: Low-Energy Nitrogen Removal in Intensified Wetlands
Low-Energy Nitrogen Removal in Intensified Wetlands

Low-Energy Nitrogen Removal in Intensified Wetlands

Low-Energy Nitrogen Removal in Intensified Wetlands

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Description: Low-Energy Nitrogen Removal in Intensified Wetlands
Low-Energy Nitrogen Removal in Intensified Wetlands
Abstract
Clean Water Services, a special service wastewater utility, is implementing a natural treatment system in Forest Grove, Oregon. The large wetland complex (~400,000 m2) will provide tertiary treatment of effluent from the Hillsboro and Forest Grove wastewater treatment facilities and will include a vertical-flow wetland (VFW) for nitrogen removal. A pilot system was operated to determine the media selection and optimum design parameters for the VFW. The pilot system consisted of four columns, operated in two series; each column was filled with rock in gradations to provide drainage, treatment, and plant growth. Operating variables included two rock types, with adsorption capacities >40 g/m3, two operational flow conditions, vertical-flow and flood- and-drain flow, and hydraulic loading rates (HLRs) ranging from 1 to 16 m/d. Results showed high rates of nitrification were achieved with >84% ammonia removal at HLRs ≤8 m/d under both operating conditions. Energy requirements and maintenance costs are be reviewed.
Clean Water Services, a special service wastewater utility, is implementing a natural treatment system in Forest Grove, Oregon. The large wetland complex (~400,000 m2) will provide tertiary treatment of effluent from the Hillsboro and Forest Grove wastewater treatment facilities and will include a vertical-flow wetland (VFW) for nitrogen removal. A pilot system was operated...
Author(s)
Jamie L HughesKenneth J WilliamsonDavid Austin
SourceProceedings of the Water Environment Federation
SubjectResearch Article
Document typeConference Paper
PublisherWater Environment Federation
Print publication date Sep, 2015
ISSN1938-6478
DOI10.2175/193864715819539100
Volume / Issue2015 / 18
Content sourceWEFTEC
Copyright2015
Word count157

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Description: Low-Energy Nitrogen Removal in Intensified Wetlands
Low-Energy Nitrogen Removal in Intensified Wetlands
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Description: Low-Energy Nitrogen Removal in Intensified Wetlands
Low-Energy Nitrogen Removal in Intensified Wetlands
Abstract
Clean Water Services, a special service wastewater utility, is implementing a natural treatment system in Forest Grove, Oregon. The large wetland complex (~400,000 m2) will provide tertiary treatment of effluent from the Hillsboro and Forest Grove wastewater treatment facilities and will include a vertical-flow wetland (VFW) for nitrogen removal. A pilot system was operated to determine the media selection and optimum design parameters for the VFW. The pilot system consisted of four columns, operated in two series; each column was filled with rock in gradations to provide drainage, treatment, and plant growth. Operating variables included two rock types, with adsorption capacities >40 g/m3, two operational flow conditions, vertical-flow and flood- and-drain flow, and hydraulic loading rates (HLRs) ranging from 1 to 16 m/d. Results showed high rates of nitrification were achieved with >84% ammonia removal at HLRs ≤8 m/d under both operating conditions. Energy requirements and maintenance costs are be reviewed.
Clean Water Services, a special service wastewater utility, is implementing a natural treatment system in Forest Grove, Oregon. The large wetland complex (~400,000 m2) will provide tertiary treatment of effluent from the Hillsboro and Forest Grove wastewater treatment facilities and will include a vertical-flow wetland (VFW) for nitrogen removal. A pilot system was operated...
Author(s)
Jamie L HughesKenneth J WilliamsonDavid Austin
SourceProceedings of the Water Environment Federation
SubjectResearch Article
Document typeConference Paper
PublisherWater Environment Federation
Print publication date Sep, 2015
ISSN1938-6478
DOI10.2175/193864715819539100
Volume / Issue2015 / 18
Content sourceWEFTEC
Copyright2015
Word count157

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Jamie L Hughes# Kenneth J Williamson# David Austin. Low-Energy Nitrogen Removal in Intensified Wetlands. Alexandria, VA 22314-1994, USA: Water Environment Federation, 2018. Web. 18 Oct. 2025. <https://www.accesswater.org?id=-278090CITANCHOR>.
Jamie L Hughes# Kenneth J Williamson# David Austin. Low-Energy Nitrogen Removal in Intensified Wetlands. Alexandria, VA 22314-1994, USA: Water Environment Federation, 2018. Accessed October 18, 2025. https://www.accesswater.org/?id=-278090CITANCHOR.
Jamie L Hughes# Kenneth J Williamson# David Austin
Low-Energy Nitrogen Removal in Intensified Wetlands
Access Water
Water Environment Federation
December 22, 2018
October 18, 2025
https://www.accesswater.org/?id=-278090CITANCHOR