CHARACTERISTICS OF ORGANIC POLLUTANTS (COD) AND THEIR SOURCE IN DIANCHI LAKE

YAN Han; WANG Shengnan; CHEN Zhuo; DAO Guohua; SHEN Moyu; GUO Hongfa; YANG Jiaojiao; ZHU Yu; PAN Min; HU Hongying

doi:10.13205/j.hjgc.202407012

Volume 42 Issue 7

Jul. 2024

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Article Navigation > ENVIRONMENTAL ENGINEERING > 2024 > 42(7): 113-119

YAN Han, WANG Shengnan, CHEN Zhuo, DAO Guohua, SHEN Moyu, GUO Hongfa, YANG Jiaojiao, ZHU Yu, PAN Min, HU Hongying. CHARACTERISTICS OF ORGANIC POLLUTANTS (COD) AND THEIR SOURCE IN DIANCHI LAKE[J]. ENVIRONMENTAL ENGINEERING , 2024, 42(7): 113-119. doi: 10.13205/j.hjgc.202407012

Citation:

YAN Han, WANG Shengnan, CHEN Zhuo, DAO Guohua, SHEN Moyu, GUO Hongfa, YANG Jiaojiao, ZHU Yu, PAN Min, HU Hongying. CHARACTERISTICS OF ORGANIC POLLUTANTS (COD) AND THEIR SOURCE IN DIANCHI LAKE[J]. ENVIRONMENTAL ENGINEERING , 2024, 42(7): 113-119. doi: 10.13205/j.hjgc.202407012

Citation:

YAN Han, WANG Shengnan, CHEN Zhuo, DAO Guohua, SHEN Moyu, GUO Hongfa, YANG Jiaojiao, ZHU Yu, PAN Min, HU Hongying. CHARACTERISTICS OF ORGANIC POLLUTANTS (COD) AND THEIR SOURCE IN DIANCHI LAKE[J]. ENVIRONMENTAL ENGINEERING , 2024, 42(7): 113-119. doi: 10.13205/j.hjgc.202407012

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CHARACTERISTICS OF ORGANIC POLLUTANTS (COD) AND THEIR SOURCE IN DIANCHI LAKE

doi: 10.13205/j.hjgc.202407012

1. Environmental Simulation and Pollution Control State Key Joint Laboratory, State Environmental Protection Key Laboratory of Microorganism Application and Risk Control (SMARC), Beijing Laboratory for Environmental Frontier Technologies, School of Environment, Tsinghua University, Beijing 100084, China;
2. Faculty of Environmental Science and Engineering, Kunming University of Science and Technology, Kunming 650500, China;
3. Kunming Dianchi and Plateau Lakes Institute, Kunming 650228, China;
4. Dianchi Lake Ecosystem Observation and Research Station of Yunnan Province, Kunming 650228, China;
5. Research Institute for Environmental Innovation (Suzhou) Tsinghua, Suzhou 215163, China

Received Date: 2023-03-10
Available Online: 2024-12-02

Abstract

Abstract

Organic pollution is still prevalent in Dianchi Lake. A comprehensive understanding of the characteristics and sources of chemical oxygen demand (COD) would contribute to the precise management and pollution prevention. The present work employed three-dimensional fluorescence spectroscopy to analyze the organic matter characteristics in Dianchi Lake and utilized mass balance calculations to assess the annual input and output of organic pollution in 2020. The results revealed that the COD concentrations were relatively higher in the eastern and western regions of Waihai, and the organic matter of the lake exhibited autogenous characteristics. The total input of COD throughout the year was estimated to be approximately 43648 tons. Urban non-point source pollution and carbon fixation by microalgae were the main inputs and accounted for 34.6% and 31.4% of the total input volume, respectively. Furthermore, 18.9% of the total input accumulated within the lake. To mitigate organic pollution in Dianchi Lake, measures such as strengthening urban runoff control, microalgal harvesting, and sediment dredging were necessary. These findings provided theoretical support for the management of organic pollution in Dianchi Lake.
- Dianchi Lake,
- organic contamination,
- organic components,
- three-dimensional fluorescence,
- mass equilibrium

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References(40)

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