Nitrification potential of daily-watered biofiltration designs for high ammonium wastewater treatment
Само за регистроване кориснике
2023
Аутори
Prodanović, Veljkozhang, Kefeng
Zheng, Min
Hu, Shihu
Pei-Ying, Hong
yuan, zhiguo
Deletic, Ana
Чланак у часопису (Коригована верзија)
Метаподаци
Приказ свих података о документуАпстракт
The vegetated biofiltration systems (VBS), also known as bioretentions or rain gardens, are well-established technology for treatment of urban stormwater and recently greywater, offering multiple benefits to urban environments. However, the impact of high ammonium strength wastewater (60 mg/L) on the nitrification process in these systems is not well understood. Hence, a laboratory-based column study was conducted to uncover dominant nitrification mechanisms, based on the learnings from similar onsite wastewater treatment systems. The experimental columns tested the effect of contact time (filter media depth, 150 mm, 300 mm and 700 mm), media oxygenation (active and passive) and alkalinity/pH (marble chips 5 % weight), as well as optimal operational conditions (inflow loading, concentrations, and dissolved oxygen (DO)). All nitrogen species (NH4+, NO3−, NO2−), chemical oxygen demand (COD) and physical parameters (DO, pH, electrical conductivity) were monitored across seven events over ...thirteen weeks. The results show that dosing with 30 and 60 mg/L of NH4+ resulted in 700 mm sand column depth to perform almost complete nitrification of NH4+ to NO3− (< 90 %), while 300 mm designs achieved partial nitrification of NH4+ to NO2−, likely due to limited contact time and inefficient nitrite oxidizing bacteria activity. Nitrification potential of all designs further supported that appropriate aerobic contact time is necessary for effective nitrification. Inflow concentration of NH4+ and DO did not significantly impact nitrification performance, while reducing daily volume loading reduced NO3− and NO2− leaching. Active and passive aeration and alkalinity buffering did not positively affect ammonium removal. While there is a potential to apply both nitrification-denitrification and anammox processes to future VBS design, further understanding of aeration and alkalinity on microbially driven nitrification processes is needed.
Кључне речи:
Nature-based solutions / Bioretention / Sand filter / Green infrastructure / Decentralised systemsИзвор:
Science of the Total Environment, 2023, 863, 160989-Издавач:
- Elsevier
Финансирање / пројекти:
- Centre of Excellence for NEOM Research at King Abdullah University of Science and Technology (KAUST)
Институција/група
Institut za multidisciplinarna istraživanjaTY - JOUR AU - Prodanović, Veljko AU - zhang, Kefeng AU - Zheng, Min AU - Hu, Shihu AU - Pei-Ying, Hong AU - yuan, zhiguo AU - Deletic, Ana PY - 2023 UR - http://rimsi.imsi.bg.ac.rs/handle/123456789/2988 AB - The vegetated biofiltration systems (VBS), also known as bioretentions or rain gardens, are well-established technology for treatment of urban stormwater and recently greywater, offering multiple benefits to urban environments. However, the impact of high ammonium strength wastewater (60 mg/L) on the nitrification process in these systems is not well understood. Hence, a laboratory-based column study was conducted to uncover dominant nitrification mechanisms, based on the learnings from similar onsite wastewater treatment systems. The experimental columns tested the effect of contact time (filter media depth, 150 mm, 300 mm and 700 mm), media oxygenation (active and passive) and alkalinity/pH (marble chips 5 % weight), as well as optimal operational conditions (inflow loading, concentrations, and dissolved oxygen (DO)). All nitrogen species (NH4+, NO3−, NO2−), chemical oxygen demand (COD) and physical parameters (DO, pH, electrical conductivity) were monitored across seven events over thirteen weeks. The results show that dosing with 30 and 60 mg/L of NH4+ resulted in 700 mm sand column depth to perform almost complete nitrification of NH4+ to NO3− (< 90 %), while 300 mm designs achieved partial nitrification of NH4+ to NO2−, likely due to limited contact time and inefficient nitrite oxidizing bacteria activity. Nitrification potential of all designs further supported that appropriate aerobic contact time is necessary for effective nitrification. Inflow concentration of NH4+ and DO did not significantly impact nitrification performance, while reducing daily volume loading reduced NO3− and NO2− leaching. Active and passive aeration and alkalinity buffering did not positively affect ammonium removal. While there is a potential to apply both nitrification-denitrification and anammox processes to future VBS design, further understanding of aeration and alkalinity on microbially driven nitrification processes is needed. PB - Elsevier T2 - Science of the Total Environment T1 - Nitrification potential of daily-watered biofiltration designs for high ammonium wastewater treatment SP - 160989 VL - 863 DO - 10.1016/j.scitotenv.2022.160989 ER -
@article{ author = "Prodanović, Veljko and zhang, Kefeng and Zheng, Min and Hu, Shihu and Pei-Ying, Hong and yuan, zhiguo and Deletic, Ana", year = "2023", abstract = "The vegetated biofiltration systems (VBS), also known as bioretentions or rain gardens, are well-established technology for treatment of urban stormwater and recently greywater, offering multiple benefits to urban environments. However, the impact of high ammonium strength wastewater (60 mg/L) on the nitrification process in these systems is not well understood. Hence, a laboratory-based column study was conducted to uncover dominant nitrification mechanisms, based on the learnings from similar onsite wastewater treatment systems. The experimental columns tested the effect of contact time (filter media depth, 150 mm, 300 mm and 700 mm), media oxygenation (active and passive) and alkalinity/pH (marble chips 5 % weight), as well as optimal operational conditions (inflow loading, concentrations, and dissolved oxygen (DO)). All nitrogen species (NH4+, NO3−, NO2−), chemical oxygen demand (COD) and physical parameters (DO, pH, electrical conductivity) were monitored across seven events over thirteen weeks. The results show that dosing with 30 and 60 mg/L of NH4+ resulted in 700 mm sand column depth to perform almost complete nitrification of NH4+ to NO3− (< 90 %), while 300 mm designs achieved partial nitrification of NH4+ to NO2−, likely due to limited contact time and inefficient nitrite oxidizing bacteria activity. Nitrification potential of all designs further supported that appropriate aerobic contact time is necessary for effective nitrification. Inflow concentration of NH4+ and DO did not significantly impact nitrification performance, while reducing daily volume loading reduced NO3− and NO2− leaching. Active and passive aeration and alkalinity buffering did not positively affect ammonium removal. While there is a potential to apply both nitrification-denitrification and anammox processes to future VBS design, further understanding of aeration and alkalinity on microbially driven nitrification processes is needed.", publisher = "Elsevier", journal = "Science of the Total Environment", title = "Nitrification potential of daily-watered biofiltration designs for high ammonium wastewater treatment", pages = "160989", volume = "863", doi = "10.1016/j.scitotenv.2022.160989" }
Prodanović, V., zhang, K., Zheng, M., Hu, S., Pei-Ying, H., yuan, z.,& Deletic, A.. (2023). Nitrification potential of daily-watered biofiltration designs for high ammonium wastewater treatment. in Science of the Total Environment Elsevier., 863, 160989. https://doi.org/10.1016/j.scitotenv.2022.160989
Prodanović V, zhang K, Zheng M, Hu S, Pei-Ying H, yuan Z, Deletic A. Nitrification potential of daily-watered biofiltration designs for high ammonium wastewater treatment. in Science of the Total Environment. 2023;863:160989. doi:10.1016/j.scitotenv.2022.160989 .
Prodanović, Veljko, zhang, Kefeng, Zheng, Min, Hu, Shihu, Pei-Ying, Hong, yuan, zhiguo, Deletic, Ana, "Nitrification potential of daily-watered biofiltration designs for high ammonium wastewater treatment" in Science of the Total Environment, 863 (2023):160989, https://doi.org/10.1016/j.scitotenv.2022.160989 . .