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Pollution Contribution Response in Governance and Potential Pollution Factors in Licun River

Author

Listed:
  • Minghui Zhang

    (College of Environmental Science and Engineering, Ocean University of China, Qingdao 266100, China)

  • Lin Wang

    (College of Environmental Science and Engineering, Ocean University of China, Qingdao 266100, China)

  • Xuda Huang

    (Qingdao Public Utility Construction Management Center, Qingdao 266100, China)

  • Xiaofeng Zhang

    (Qingdao Public Utility Construction Management Center, Qingdao 266100, China)

Abstract

The development of the city results in deterioration of the water quality of the Licun River. As a result, years of governance have been conducted to improve its water quality. In order to clarify the response changes of water quality in the water governance, the governance process is divided into three stages (2000–2007, 2008–2016, 2017–2020) according to different priorities. Spearman’s rank correlation coefficient and the comprehensive pollution index are applied to analyze the variation of water quality response at various stages. In addition, the main pollution contributions with the governance changes were obtained. It is concluded that flood control and incomplete river pollution interception have a limited effect on water quality improvement, with NH 3 -N (ammonia nitrogen) and COD (chemical oxygen demand) being the main pollution contributions at the first stage. At the second stage, the point source control and sewage treatment facilities significantly improve water quality, and the main pollution contributions are NH 3 -N and TP (total phosphorus). At the third stage, sewage treatment facilities and supporting pipelines are improved, water sources are replenished, and the main pollution contribution is TN (total nitrogen). For further treatment, the factors affecting pollution are analyzed, including the contradiction of sewage system, point source pollution caused by pipe network problems, shortage of water resources, sludge pollution, and non-point source pollution.

Suggested Citation

  • Minghui Zhang & Lin Wang & Xuda Huang & Xiaofeng Zhang, 2022. "Pollution Contribution Response in Governance and Potential Pollution Factors in Licun River," Sustainability, MDPI, vol. 14(6), pages 1-14, March.
    • Handle: RePEc:gam:jsusta:v:14:y:2022:i:6:p:3547-:d:773500
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    References listed on IDEAS

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    1. Romero, Estela & Le Gendre, Romain & Garnier, Josette & Billen, Gilles & Fisson, Cédric & Silvestre, Marie & Riou, Philippe, 2016. "Long-term water quality in the lower Seine: Lessons learned over 4 decades of monitoring," Environmental Science & Policy, Elsevier, vol. 58(C), pages 141-154.
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