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Adam Brady
Department of Geography and Environmental Engineering, United States Military Academy, West Point, NY 10997, USA

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Journal article
Published: 16 March 2021 in Water
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Projections of increased hydrological extremes due to climate change heighten the need to understand and improve the resilience of our water infrastructure. While constructed natural treatment analogs, such as raingardens, wetlands, and aquifer recharge, hold intuitive promise for variable flows, the impacts of disruption on water treatment processes and outcomes are not well understood and limit widespread adoption. To this end, we studied the impact of desiccation and flooding extremes on demonstration-scale shallow, unit process open water (UPOW) wetlands designed for water treatment. System resilience was evaluated as a function of physical characteristics, nitrate removal, photosynthetic activity, and microbial ecology. Rehydrated biomat that had been naturally desiccated re-established nitrate removal consistent with undisrupted biomat in less than a week; however, a pulse of organic carbon and nitrogen accompanied the initial rehydration phase. Conversely, sediment intrusion due to flooding had a negative impact on the biomat’s photosynthetic activity and decreased nitrate attenuation rates by nearly 50%. Based upon past mechanistic inferences, attenuation potential for trace organics is anticipated to follow similar trends as nitrate removal. While the microbial community was significantly altered in both extremes, our results collectively suggest that UPOW wetlands have potential for seasonal or intermittent use due to their promise of rapid re-establishment after rehydration. Flooding extremes and associated sediment intrusion provide a greater barrier to system resilience indicating a need for proactive designs to prevent this outcome; however, residual treatment potential after disruption could provide operators with time to triage and manage the system should a flood occur again.

ACS Style

Adam Brady; Michael Vega; Kimberly Riddle; Henry Peel; Evelyn Lundeen; Julia Siegmund; Jonathan Sharp. Biomat Resilience to Desiccation and Flooding Within a Shallow, Unit Process Open Water Engineered Wetland. Water 2021, 13, 815 .

AMA Style

Adam Brady, Michael Vega, Kimberly Riddle, Henry Peel, Evelyn Lundeen, Julia Siegmund, Jonathan Sharp. Biomat Resilience to Desiccation and Flooding Within a Shallow, Unit Process Open Water Engineered Wetland. Water. 2021; 13 (6):815.

Chicago/Turabian Style

Adam Brady; Michael Vega; Kimberly Riddle; Henry Peel; Evelyn Lundeen; Julia Siegmund; Jonathan Sharp. 2021. "Biomat Resilience to Desiccation and Flooding Within a Shallow, Unit Process Open Water Engineered Wetland." Water 13, no. 6: 815.

Preprint content
Published: 30 November 2020
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ACS Style

Adam Brady; Carly Oliver; Michael Vega; Jonathan Sharp; Julia Siegmund; Evelyn Lundeen; Dana Sanelli. Resilience of photosynthetic biomat within a unit process open water wetland following extreme events. 2020, 1 .

AMA Style

Adam Brady, Carly Oliver, Michael Vega, Jonathan Sharp, Julia Siegmund, Evelyn Lundeen, Dana Sanelli. Resilience of photosynthetic biomat within a unit process open water wetland following extreme events. . 2020; ():1.

Chicago/Turabian Style

Adam Brady; Carly Oliver; Michael Vega; Jonathan Sharp; Julia Siegmund; Evelyn Lundeen; Dana Sanelli. 2020. "Resilience of photosynthetic biomat within a unit process open water wetland following extreme events." , no. : 1.

Journal article
Published: 01 October 2013 in Water Environment Research
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This section presents a review of the literature published in 2012 on topics relating to distributed treatment systems. This review is divided into the following sections: conventional systems; natural systems; onsite treatment applications for greywater reuse; and planning and treatment system management.

ACS Style

Matthew Baideme; Adam Brady; Cristian Robbins. Distributed Treatment Systems. Water Environment Research 2013, 85, 1339 -1353.

AMA Style

Matthew Baideme, Adam Brady, Cristian Robbins. Distributed Treatment Systems. Water Environment Research. 2013; 85 (10):1339-1353.

Chicago/Turabian Style

Matthew Baideme; Adam Brady; Cristian Robbins. 2013. "Distributed Treatment Systems." Water Environment Research 85, no. 10: 1339-1353.