IDEAS home Printed from https://ideas.repec.org/a/gam/jsusta/v14y2022i14p8819-d866294.html
   My bibliography  Save this article

Pathways of Nitrogen and Phosphorus Utilization and Removal from Cyanobacteria Wastewater by Combining Constructed Wetlands with Aerobic Reactors

Author

Listed:
  • Liying Gong

    (School of Energy and Environment, Key Laboratory of Environmental Medicine Engineering, Ministry of Education, Southeast University, Nanjing 210096, China)

  • Xuanxuan Zhao

    (School of Energy and Environment, Key Laboratory of Environmental Medicine Engineering, Ministry of Education, Southeast University, Nanjing 210096, China)

  • Guangcan Zhu

    (School of Energy and Environment, Key Laboratory of Environmental Medicine Engineering, Ministry of Education, Southeast University, Nanjing 210096, China)

Abstract

Due to its low C/N ratio and high concentrations of nitrogen and phosphorus, the effluent of anaerobic cyanobacteria fermentation cannot be directly discharged without further treatment. To effectively reduce nutrient loads and utilize the nutrient resources of biogas slurry generated from the anaerobic digestion of stored algae, two different aerobic treatment units (AUs) were combined with an ecological treatment unit (EU) to create two different treatment systems. The two AUEU systems paired a constructed wetland (CW) with either a cascade biological contact reactor (CBCR) or a carrousel oxidation ditch reactor (CODR). In this paper, the water quality characteristics of biogas slurry were measured, and comprehensive experiments on the two trial-treatment systems were carried out to validate their performance in removing pollutants and utilizing resources. Furthermore, the pollutant removal efficiencies of the combined systems, along with the removal mechanisms and utilization of the nitrogen and phosphorus in the CWs, were also investigated. The results showed that the CWs, with aquatic vegetation, took up the majority of removed nitrogen and phosphorus by absorption, which effectively reduced the concentration of pollutants in the effluent and enabled the nitrogen and phosphorus to be reused in plants. Biomass assimilation by the absorption by vegetation took up 75.8%, 66.1%, 70.3%, and 86% of the removed NH 4 + -N, NO x − -N, TN, and TP, respectively.

Suggested Citation

  • Liying Gong & Xuanxuan Zhao & Guangcan Zhu, 2022. "Pathways of Nitrogen and Phosphorus Utilization and Removal from Cyanobacteria Wastewater by Combining Constructed Wetlands with Aerobic Reactors," Sustainability, MDPI, vol. 14(14), pages 1-16, July.
  • Handle: RePEc:gam:jsusta:v:14:y:2022:i:14:p:8819-:d:866294
    as

    Download full text from publisher

    File URL: https://www.mdpi.com/2071-1050/14/14/8819/pdf
    Download Restriction: no

    File URL: https://www.mdpi.com/2071-1050/14/14/8819/
    Download Restriction: no
    ---><---

    References listed on IDEAS

    as
    1. Shaojian Chen & Yuanyuan Cao & Jun Li, 2021. "The Effect of Water Rights Trading Policy on Water Resource Utilization Efficiency: Evidence from a Quasi-Natural Experiment in China," Sustainability, MDPI, vol. 13(9), pages 1-17, May.
    2. Qinge Wang & He Cao & Huanan Yu & Luwei Zhao & Jinchan Fan & Yingqing Wang, 2020. "Experimental Study on Purification Effect of Biochemical Pool Model for Treatment of Pavement Runoff by Aquatic Plants," Sustainability, MDPI, vol. 12(6), pages 1-14, March.
    3. Hossain Md Anawar & Rezaul Chowdhury, 2020. "Remediation of Polluted River Water by Biological, Chemical, Ecological and Engineering Processes," Sustainability, MDPI, vol. 12(17), pages 1-18, August.
    Full references (including those not matched with items on IDEAS)

    Citations

    Citations are extracted by the CitEc Project, subscribe to its RSS feed for this item.
    as


    Cited by:

    1. Pan Gao & Chao Zhang, 2022. "Study on Phosphorus Removal Pathway in Constructed Wetlands with Thermally Modified Sepiolite," Sustainability, MDPI, vol. 14(19), pages 1-17, October.

    Most related items

    These are the items that most often cite the same works as this one and are cited by the same works as this one.
    1. Shan Ren & Pei Song & Haichun Cheng & Chao Liu & Rongsheng Chen, 2022. "Enhanced Treatment of Decentralized Domestic Sewage Using Gravity-Flow Multi-Soil-Layering Systems Coupled with Iron-Carbon Microelectrolysis," Sustainability, MDPI, vol. 14(19), pages 1-18, October.
    2. Xu, Xianghui & Chen, Yingshan & Zhou, Yan & Liu, Wuyuan & Zhang, Xinrui & Li, Mo, 2023. "Sustainable management of agricultural water rights trading under uncertainty: An optimization-evaluation framework," Agricultural Water Management, Elsevier, vol. 280(C).
    3. Yan Liu & Chao Shang, 2022. "Application of Blockchain Technology in Agricultural Water Rights Trade Management," Sustainability, MDPI, vol. 14(12), pages 1-10, June.
    4. Djesser Zechner Sergio & Alexandra Rodrigues Finotti, 2023. "Field-Scale Constructed Floating Wetland Applied for Revitalization of a Subtropical Urban Stream in Brazil," Sustainability, MDPI, vol. 15(20), pages 1-18, October.
    5. Jens Gudmundsson & Jens Leth Hougaard, 2021. "River pollution abatement: Decentralized solutions and smart contracts," IFRO Working Paper 2021/07, University of Copenhagen, Department of Food and Resource Economics, revised Oct 2021.
    6. Yanqin Zhang & Xianli You & Shanjun Huang & Minhua Wang & Jianwen Dong, 2022. "Knowledge Atlas on the Relationship between Water Management and Constructed Wetlands—A Bibliometric Analysis Based on CiteSpace," Sustainability, MDPI, vol. 14(14), pages 1-28, July.
    7. Lanqing Qiu & Ping Yu & Shaofei Li & Huixin Ma & Danying Li & Jianzhu Li, 2022. "Water Purification Effect of Ecological Floating Bed Combination Based on the Numerical Simulation," Sustainability, MDPI, vol. 14(19), pages 1-15, September.
    8. Wenqing Song & Shizhuo Wang & Jiang Zhao & Shiliang Xu & Xuefei Zhou & Yalei Zhang, 2023. "Comprehensive Treatment for River Pollution in a Coastal City with a Complex River Network: A Case Study in Sanya, China," Sustainability, MDPI, vol. 15(8), pages 1-15, April.
    9. Yean Ling Pang & Yen Ying Quek & Steven Lim & Siew Hoong Shuit, 2023. "Review on Phytoremediation Potential of Floating Aquatic Plants for Heavy Metals: A Promising Approach," Sustainability, MDPI, vol. 15(2), pages 1-23, January.
    10. Qing’e Wang & Mengmeng Su & Lei Zeng & Huihua Chen, 2022. "A New Method to Assist Decision-Making of Water Environmental Emergency in Expressway Region," IJERPH, MDPI, vol. 19(16), pages 1-19, August.
    11. He Huang & Yong Zhou & Yu-Jie Liu & Liang Xiao & Ke Li & Meng-Yao Li & Yang Tian & Fei Wu, 2021. "Source Apportionment and Ecological Risk Assessment of Potentially Toxic Elements in Cultivated Soils of Xiangzhou, China: A Combined Approach of Geographic Information System and Random Forest," Sustainability, MDPI, vol. 13(3), pages 1-22, January.
    12. Yonghui Wang & Jin Li & Kaixuan Qian & Mao Ye, 2023. "Response of Plant Species Diversity to Flood Irrigation in the Tarim River Basin, Northwest China," Sustainability, MDPI, vol. 15(2), pages 1-14, January.
    13. Hang Yin & Wenyan Liang & Xin Cao, 2022. "Self-Purification Mode of Still-Water Ponds in Urban Parks Based on In Situ Ecological Remediation Design," Land, MDPI, vol. 11(10), pages 1-25, September.
    14. Tannia Vargas-Tierras & Sandra Suárez-Cedillo & Vanessa Morales-León & Yadira Vargas-Tierras & Leider Tinoco-Jaramillo & William Viera-Arroyo & Wilson Vásquez-Castillo, 2023. "Ecological River Water Quality Based on Macroinvertebrates Present in the Ecuadorian Amazon," Sustainability, MDPI, vol. 15(7), pages 1-15, March.

    Corrections

    All material on this site has been provided by the respective publishers and authors. You can help correct errors and omissions. When requesting a correction, please mention this item's handle: RePEc:gam:jsusta:v:14:y:2022:i:14:p:8819-:d:866294. See general information about how to correct material in RePEc.

    If you have authored this item and are not yet registered with RePEc, we encourage you to do it here. This allows to link your profile to this item. It also allows you to accept potential citations to this item that we are uncertain about.

    If CitEc recognized a bibliographic reference but did not link an item in RePEc to it, you can help with this form .

    If you know of missing items citing this one, you can help us creating those links by adding the relevant references in the same way as above, for each refering item. If you are a registered author of this item, you may also want to check the "citations" tab in your RePEc Author Service profile, as there may be some citations waiting for confirmation.

    For technical questions regarding this item, or to correct its authors, title, abstract, bibliographic or download information, contact: MDPI Indexing Manager (email available below). General contact details of provider: https://www.mdpi.com .

    Please note that corrections may take a couple of weeks to filter through the various RePEc services.

    IDEAS is a RePEc service. RePEc uses bibliographic data supplied by the respective publishers.