Exploring denitrification and anammox processes in the saturated zone of passively operated vegetated biofiltration systems
Само за регистроване кориснике
2023
Аутори
zhang, KefengProdanović, Veljko
Zhao, Hengke
Zheng, Min
Hu, Shihu
Hong, Pei-Ying
yuan, zhiguo
Deletic, Ana
Чланак у часопису (Коригована верзија)
,
The Royal Society of Chemistry 2023
Метаподаци
Приказ свих података о документуАпстракт
Vegetated biofiltration systems (VBS) are common nature-based solutions (NBS) for urban water treatment, but their performance in treating nitrogen-rich wastewater is yet to be explored. This study investigated the submerged zone (SZ) component of VBS, for its ability to treat nitrogen through traditional denitrification, as well as the anaerobic ammonium oxidation (anammox) process that was rarely studied in NBS. A two-phase column-based experiment was conducted: (1) denitrification phase, to explore the impact of different carbon sources (hardwood chips, softwood chips, walnut shells), retention time and dissolved oxygen (DO) on denitrification; and (2) anammox phase, to identify whether the anammox process could occur in passively operated VBS. The results show that the VBS was able to treat nitrogen rich wastewater (with 80–100 mg L−1 total nitrogen – TN) in both phases (average TN removal rates of 58.0 ± 16.4%). Carbon sources had significant influences on TN and NO3–N removal in ...the denitrification phase (p < 0.05), with hardwood chips being the most effective (76.3 ± 16.1%, standard conditions). Noticeable improvement was observed when increasing the retention time from 12 h (15.5 ± 4.5% TN removal) to 48h (81.0 ± 2.9%). DO levels (<0.5 mg L−1 to 3 mg L−1) did not have a significant impact on nitrogen removal in all tested systems. Microbial analysis showed significant differences between hardwood chips/softwood chips and walnut shells. Various types of denitrifying bacteria dominated the microbial community (total relative abundance >10%), with Comamonadaceae_unclassified being the most abundant (average 8.3%) across all media types. A suspected anammox genus SM1A02 was found in the systems, but at very low abundance levels (up to 0.137%), which may indicate the presence of the anammox process in the passively operated VBS.
Кључне речи:
low impact development / green infrastructure / water recycling / decentralised treatment / microbial community / blue green systemsИзвор:
Environmental Science: Water Research & Technology, 2023, 9, 11, 3062-3075Издавач:
- The Royal Society of Chemistry
Финансирање / пројекти:
- Centre of Excellence for NEOM Research at King Abdullah University of Science and Technology (KAUST)
- Australian Research Council Discovery Projects (DP220103833)
Институција/група
Institut za multidisciplinarna istraživanjaTY - JOUR AU - zhang, Kefeng AU - Prodanović, Veljko AU - Zhao, Hengke AU - Zheng, Min AU - Hu, Shihu AU - Hong, Pei-Ying AU - yuan, zhiguo AU - Deletic, Ana PY - 2023 UR - http://rimsi.imsi.bg.ac.rs/handle/123456789/2873 AB - Vegetated biofiltration systems (VBS) are common nature-based solutions (NBS) for urban water treatment, but their performance in treating nitrogen-rich wastewater is yet to be explored. This study investigated the submerged zone (SZ) component of VBS, for its ability to treat nitrogen through traditional denitrification, as well as the anaerobic ammonium oxidation (anammox) process that was rarely studied in NBS. A two-phase column-based experiment was conducted: (1) denitrification phase, to explore the impact of different carbon sources (hardwood chips, softwood chips, walnut shells), retention time and dissolved oxygen (DO) on denitrification; and (2) anammox phase, to identify whether the anammox process could occur in passively operated VBS. The results show that the VBS was able to treat nitrogen rich wastewater (with 80–100 mg L−1 total nitrogen – TN) in both phases (average TN removal rates of 58.0 ± 16.4%). Carbon sources had significant influences on TN and NO3–N removal in the denitrification phase (p < 0.05), with hardwood chips being the most effective (76.3 ± 16.1%, standard conditions). Noticeable improvement was observed when increasing the retention time from 12 h (15.5 ± 4.5% TN removal) to 48h (81.0 ± 2.9%). DO levels (<0.5 mg L−1 to 3 mg L−1) did not have a significant impact on nitrogen removal in all tested systems. Microbial analysis showed significant differences between hardwood chips/softwood chips and walnut shells. Various types of denitrifying bacteria dominated the microbial community (total relative abundance >10%), with Comamonadaceae_unclassified being the most abundant (average 8.3%) across all media types. A suspected anammox genus SM1A02 was found in the systems, but at very low abundance levels (up to 0.137%), which may indicate the presence of the anammox process in the passively operated VBS. PB - The Royal Society of Chemistry T2 - Environmental Science: Water Research & Technology T1 - Exploring denitrification and anammox processes in the saturated zone of passively operated vegetated biofiltration systems EP - 3075 IS - 11 SP - 3062 VL - 9 DO - 10.1039/D3EW00347G ER -
@article{ author = "zhang, Kefeng and Prodanović, Veljko and Zhao, Hengke and Zheng, Min and Hu, Shihu and Hong, Pei-Ying and yuan, zhiguo and Deletic, Ana", year = "2023", abstract = "Vegetated biofiltration systems (VBS) are common nature-based solutions (NBS) for urban water treatment, but their performance in treating nitrogen-rich wastewater is yet to be explored. This study investigated the submerged zone (SZ) component of VBS, for its ability to treat nitrogen through traditional denitrification, as well as the anaerobic ammonium oxidation (anammox) process that was rarely studied in NBS. A two-phase column-based experiment was conducted: (1) denitrification phase, to explore the impact of different carbon sources (hardwood chips, softwood chips, walnut shells), retention time and dissolved oxygen (DO) on denitrification; and (2) anammox phase, to identify whether the anammox process could occur in passively operated VBS. The results show that the VBS was able to treat nitrogen rich wastewater (with 80–100 mg L−1 total nitrogen – TN) in both phases (average TN removal rates of 58.0 ± 16.4%). Carbon sources had significant influences on TN and NO3–N removal in the denitrification phase (p < 0.05), with hardwood chips being the most effective (76.3 ± 16.1%, standard conditions). Noticeable improvement was observed when increasing the retention time from 12 h (15.5 ± 4.5% TN removal) to 48h (81.0 ± 2.9%). DO levels (<0.5 mg L−1 to 3 mg L−1) did not have a significant impact on nitrogen removal in all tested systems. Microbial analysis showed significant differences between hardwood chips/softwood chips and walnut shells. Various types of denitrifying bacteria dominated the microbial community (total relative abundance >10%), with Comamonadaceae_unclassified being the most abundant (average 8.3%) across all media types. A suspected anammox genus SM1A02 was found in the systems, but at very low abundance levels (up to 0.137%), which may indicate the presence of the anammox process in the passively operated VBS.", publisher = "The Royal Society of Chemistry", journal = "Environmental Science: Water Research & Technology", title = "Exploring denitrification and anammox processes in the saturated zone of passively operated vegetated biofiltration systems", pages = "3075-3062", number = "11", volume = "9", doi = "10.1039/D3EW00347G" }
zhang, K., Prodanović, V., Zhao, H., Zheng, M., Hu, S., Hong, P., yuan, z.,& Deletic, A.. (2023). Exploring denitrification and anammox processes in the saturated zone of passively operated vegetated biofiltration systems. in Environmental Science: Water Research & Technology The Royal Society of Chemistry., 9(11), 3062-3075. https://doi.org/10.1039/D3EW00347G
zhang K, Prodanović V, Zhao H, Zheng M, Hu S, Hong P, yuan Z, Deletic A. Exploring denitrification and anammox processes in the saturated zone of passively operated vegetated biofiltration systems. in Environmental Science: Water Research & Technology. 2023;9(11):3062-3075. doi:10.1039/D3EW00347G .
zhang, Kefeng, Prodanović, Veljko, Zhao, Hengke, Zheng, Min, Hu, Shihu, Hong, Pei-Ying, yuan, zhiguo, Deletic, Ana, "Exploring denitrification and anammox processes in the saturated zone of passively operated vegetated biofiltration systems" in Environmental Science: Water Research & Technology, 9, no. 11 (2023):3062-3075, https://doi.org/10.1039/D3EW00347G . .