A Pilot-Scale Hybrid Adsorption–Biological Treatment System for Nitrogen Removal in Onsite Wastewater Treatment

Rodríguez-González, Laura; Miriyala, Amulya; Rice, Madison; Delgado, Daniel; Marshall, Justine; Henderson, Michelle; Ghebremichael, Kebreab; Mihelcic, James R.; Ergas, Sarina J.

doi:10.1061/jswbay.0000898

Cited by 13 publications

(5 citation statements)

References 28 publications

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“…The observed concentrations were not substantially different between the morning and evening samples (data not shown). These results are in contrast to previous studies, where higher nitrate and lower ammonium concentrations were observed in the morning samples [50]. Figure 5 shows the average nitrogen transformations in the wastewater through each column of each system in Phase 1.…”

Section: Nitrogencontrasting

confidence: 80%

“…However, additional treatment using adsorption media might be required to continuously remove nitrogen and phosphorus during cold weather and after periods of low or no flow of wastewater. Recent research has shown promising results for this type of wastewater for the sorption of ammonia while using the natural zeolite mineral, clinoptilolite [50], and nitrate using tire chips [51]. Sorption allows for the removal of these nutrients, while microbial communities build up and become adequate to treat the nitrogen completely; during periods of low flow of wastewater through the media, these inexpensive materials can be microbially regenerated in-place, which allows for its continued use [51][52][53].…”

Section: Introductionmentioning

confidence: 99%

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Treatment of Winery Wastewater Using Bench-Scale Columns Simulating Vertical Flow Constructed Wetlands with Adsorption Media

et al. 2020

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Wastewater produced during the wine-making process often contains an order of magnitude greater chemical oxygen demand (COD) concentration than is typical of domestic wastewater. This waste stream is also highly variable in flow and composition due to the seasonality of wine-making. The recent growth of small-scale wineries in cold climates and increasing regulations present a need for low-cost, easily-operable treatment systems that do not require large amounts of land, yet maintain a high level of treatment in cool temperatures. This research investigates the use of a subsurface vertical flow constructed wetland (SVFCW) to treat winery wastewater. In this study, clinoptilolite, tire chips, and a nano-enhanced iron foam were used to enhance bench-scale gravel cells to adsorb ammonia, nitrate, and phosphorus, respectively. The treatment systems, without nitrogen adsorption media, performed well, with >99% removal of COD and 94% removal of total nitrogen. Treatment systems with the nitrogen adsorption media did not enhance nitrogen removal. Equilibrium was reached within two weeks of start-up, regardless of prior inoculation, which suggests that microbes present in the winery wastewater are sufficient for the start-up of the wastewater treatment system; therefore, the seasonality of winery wastewater production will not substantially impact treatment. Operating the treatment systems under cool temperatures did not significantly impact COD or total nitrogen removal. Further, the use of nano-enhanced iron foam exhibited 99.8% removal of phosphorus, which resulted in effluent concentrations that were below 0.102 mg/L P.

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Section: Nitrogencontrasting

confidence: 80%

Section: Introductionmentioning

confidence: 99%

Treatment of Winery Wastewater Using Bench-Scale Columns Simulating Vertical Flow Constructed Wetlands with Adsorption Media

et al. 2020

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“…Zeolite has also been used as the filter media to enhance pathogen removal efficiency due to its ability to adsorb positively charged ions [76,196]. A zeolite tank was used as a polishing unit after the conventional CW to further remove nutrients from domestic wastewater.…”

Section: Type Of Filter Mediamentioning

confidence: 99%

“…Another study also demonstrated that sand filters amended with 5% (by weight) biochar retained up to 1000 times more E. coli than plain sand filters, indicating that the pathogen removal efficiency could be improved by the amendment of biochar to the filter [198]. Other materials such as recycled tires and mulch have been applied for onsite wastewater treatment [196,199]. However, most of the studies only focused on the removal of nutrient and organic pollutants.…”

Section: Type Of Filter Mediamentioning

confidence: 99%

Removal of Pathogens in Onsite Wastewater Treatment Systems: A Review of Design Considerations and Influencing Factors

Wang

Zhu²,

Mao

2021

Water

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Conventional onsite wastewater treatment systems (OWTSs) could potentially contribute to the transmission of infectious diseases caused by waterborne pathogenic microorganisms and become an important human health concern, especially in the areas where OWTSs are used as the major wastewater treatment units. Although previous studies suggested the OWTSs could reduce chemical pollutants as well as effectively reducing microbial contaminants from onsite wastewater, the microbiological quality of effluents and the factors potentially affecting the removal are still understudied. Therefore, the design and optimization of pathogen removal performance necessitate a better mechanistic understanding of the hydrological, geochemical, and biological processes controlling the water quality in OWTSs. To fill the knowledge gaps, the sources of pathogens and common pathogenic indicators, along with their major removal mechanisms in OWTSs were discussed. This review evaluated the effectiveness of pathogen removal in state-of-art OWTSs and investigated the contributing factors for efficient pathogen removal (e.g., system configurations, filter materials, environmental and operational conditions), with the aim to guide the future design for optimized treatment performance.

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“…A 434-d demonstration showed a hybrid adsorption and biological treatment system (that uses a zeolite material, recycled tire mulch, and elemental S) consistently achieved advanced secondary onsite wastewater treatment standards under transient loading conditions. The system removed >50% of total N from septic tank effluent, and Stage 1 recirculation improved NH 4 + removal at both a 1:1 (84%) and a 3:1 (87%) recirculation ratio compared with no recirculation (∼50%) (Rodriguez-Gonzalez et al, 2019).…”

Section: Onsite Wastewater Treatmentmentioning

confidence: 96%

Nutrient control in water bodies: A systems approach

et al. 2020

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Nutrient pollution is considered a wicked problem because of its many significant economic, social, and environmental impacts that are caused by multiple pollutants originating from a variety of sources and pathways that exist across different temporal and spatial scales. Further adding to the difficulty in managing nutrient pollution is that it is a global, rural, and urban problem. A systems approach can improve nutrient management by incorporating technological, environmental, and societal considerations. This approach can consider valuation of monetized and nonmonetized cobenefits and the inherent consequences that make up a nutrient management program.In this introduction to a special collection of papers on nutrient pollution, we describe several systems frameworks that can be used to support nutrient management and evaluation of system performance as it relates to impacts, then highlight several attributes and barriers of nutrient management that point to the need for a systems framework, and conclude with thoughts on implementing systems approaches to nutrient management with effective community engagement and use of new technologies. This special collection presents results from a USEPA Science to Achieve Results (STAR) initiative to advance solutions to nutrient pollution through innovative and sustainable research and demonstration projects for nutrient management based on a systems approach. These studies evaluate several promising nutrient control technologies for stormwater or domestic wastewater, investigate the effects of agricultural conservation practices and stream restoration strategies on nutrient loads, and discuss several challenges and opportunities-social, policy, institutional, and financial considerationsthat can accelerate adoption of reliable technologies to achieve system-level outcomes.

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A Pilot-Scale Hybrid Adsorption–Biological Treatment System for Nitrogen Removal in Onsite Wastewater Treatment

Cited by 13 publications

References 28 publications

Treatment of Winery Wastewater Using Bench-Scale Columns Simulating Vertical Flow Constructed Wetlands with Adsorption Media

Treatment of Winery Wastewater Using Bench-Scale Columns Simulating Vertical Flow Constructed Wetlands with Adsorption Media

Removal of Pathogens in Onsite Wastewater Treatment Systems: A Review of Design Considerations and Influencing Factors

Nutrient control in water bodies: A systems approach

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