Study of Water Quality of Artificial Water Body in Nankai University Based on COD Determination

Pujia Zhang

doi:10.54097/gz9g5j03

Authors

Pujia Zhang Chemistry Department, Nankai University, Tianjin, China

DOI:

https://doi.org/10.54097/gz9g5j03

Keywords:

Campus artificial lake, Water quality assessment, Chemical oxygen demand, Ecological restoration.

Abstract

Campus artificial water body is a significant component of micro-water ecosystem in cities, integrating landscape, ecological, educational and cultural functions. This study takes the artificial lakes in Balitai Campus of Nankai University as the research objects, carries out a systematic evaluation of current water quality through water quality sampling, COD determination and data analysis. This paper presents main pollution resource and ecological issues, proposes water improvement and long-term maintenance measures. The research used acidic potassium permanganate method to determine COD of lake water, and the results show that the mean value of COD of Xinkai Lake is 22.36mg/L, classified as Grade IV surface water which requires governance. The mean COD of Horseshoe Lake is 3.82mg/L, showing a decent water quality. Pollution of closed lakes is mainly due to sediment endogenous release and limited water exchange. This paper puts forward measures including building connecting channels and establishing regular monitoring mechanisms, providing a scientific basis for Nankai campus water management and an example for global campus water environment management.

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References

[1] The Central Committee of the Communist Party of China and the State Council, Opinions on Comprehensively Promoting the Construction of a Beautiful China, (2023)

[2] Ministry of Education, Implementation Plan for the Construction of a National Education System for Green and Low-Carbon Development, (2022)

[3] X. Wu, C. Cao, Y. Chen, et al., Research on the method of improving water quality in closed water by photocatalysis. IOP Conf. Ser.: Earth Environ. Sci. 440, 042052 (2020) https://doi.org/10.1088/1755-1315/440/4/042052 DOI: https://doi.org/10.1088/1755-1315/440/4/042052

[4] X. Cheng, F. Qian, S. Wang, et al., Microbial mechanisms of biofilms on wax media in the remediation of Suzhou-style garden water bodies in China. Environ. Technol. Innov. 40, 104463 (2025) https://doi.org/10.1016/j.eti.2025.104463 DOI: https://doi.org/10.1016/j.eti.2025.104463

[5] J. Zhang, J. Tan, Y. Wang, Spatial differences of dissolved organic matter composition and humification in an artificial lake. Water Sci. Technol. 90, 995–1008 (2024) https://doi.org/10.2166/wst.2024.267 DOI: https://doi.org/10.2166/wst.2024.267

[6] X. Jin, Control and Management Techniques for Lake Eutrophication, (Chemical Industry Press, Beijing, 2001)

[7] State Environmental Protection Administration, Surface Water Environmental Quality Standards: GB 3838-2002, (China Environmental Science Press, Beijing, 2002)

[8] X. Qiu, Y. Li, J. Han, et al., Basic Chemistry Experiments (Second Edition), (Science Press, Beijing, 2017)

[9] Y. Dong, X. Zhang, F. Chen, et al., Construction of ecological floating island and restoration of campus artificial lake eutrophication. Environ. Eng. 39, 90–96 (2021) https://doi.org/10.13205/j.hjgc.202103013

[10] L. Liu, K. Yang, S. Feng, et al., Different macrophytes and eutrophic gradients regulate microbial communities of phytoremediation for eutrophication pollution and carbon reduction. J. Clean. Prod. 473, 143536 (2024) https://doi.org/10.1016/j.jclepro.2024.143536 DOI: https://doi.org/10.1016/j.jclepro.2024.143536