BAI Yunyu, ZHANG Haojie, HE Xiaoyun, ZHU Zhitao, TAN Zhengqi, SUN Weixia, HUANG Dawei, BING Yongxin, GUO Ping. Emergency treatment strategies and influencing factors of thallium pollution in small watershed: A case study of Xiangshuihe Reservoir and its upstream in Qujing City[J]. Chinese Journal of Environmental Engineering, 2022, 16(8): 2558-2565. doi: 10.12030/j.cjee.202111183
Citation: |
BAI Yunyu, ZHANG Haojie, HE Xiaoyun, ZHU Zhitao, TAN Zhengqi, SUN Weixia, HUANG Dawei, BING Yongxin, GUO Ping. Emergency treatment strategies and influencing factors of thallium pollution in small watershed: A case study of Xiangshuihe Reservoir and its upstream in Qujing City[J]. Chinese Journal of Environmental Engineering, 2022, 16(8): 2558-2565. doi: 10.12030/j.cjee.202111183
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Emergency treatment strategies and influencing factors of thallium pollution in small watershed: A case study of Xiangshuihe Reservoir and its upstream in Qujing City
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BAI Yunyu1,2, ,
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ZHANG Haojie1,2,
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HE Xiaoyun1,2,
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ZHU Zhitao1,2,
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TAN Zhengqi1,2,
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SUN Weixia1,2,
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HUANG Dawei2,
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BING Yongxin2,
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GUO Ping1,2, ,
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1.
Center of Environmental Emergency and Investigation, Department of Ecology and Environment of Yunnan Province, Kunming 650034, China
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2.
South China Institute of Environmental Sciences, Ministry of Ecology and Environment (Research Institute of Eco-environmental Emergency, Ministry of Ecology and Environment), Guangzhou 510530, China
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Corresponding author:
GUO Ping, gp93069@163.com
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Received Date:
30/11/2021
Available Online:
31/08/2022
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Abstract
Based on the thallium pollution accident occurred in Xiangshuihe reservoir and its upstream Jishanghe River of Yunnan, China, the difficulties and its possible influencing factors were discussed in the emergency disposal of thallium pollution in river basins, and the corresponding solutions were proposed. After 27 days of emergency treatment, the concentration of thallium in the polluted water met the standard by adopting decentralized dosing method, adjusting dosing points and water replenishment and drainage sequence dynamically on the basis of using combined sodium sulfide and sodium hydroxide dosing technology. It was shown that in an open environment, the removal efficiency, the river environment itself, the karst landform, and the shape of the reservoir all affected the emergency treatment effect and the timeliness of emergency disposal. Taking measures properly according to the actual and local conditions is the key to deal with pollution incidents in river basins. The influencing factors analyzed in this study and the proposed solution strategies can be applied to other similar heavy metal or metal-like pollution emergency in water environment.
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