Exploration and application of emergency treatment methods for thallium pollution in rivers

WANG Panxin; WU Changyong; HU Yingming; FU Liya; SONG Yudong; XI Hongbo; YU Yin; ZHAO Meng

doi:10.12153/j.issn.1674-991X.20210398

Volume 12 Issue 1

Jan. 2022

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Article Navigation > Journal of Environmental Engineering Technology > 2022 > 12(1): 308-313

WANG P X,WU C Y,HU Y M,et al.Exploration and application of emergency treatment methods for thallium pollution in rivers[J].Journal of Environmental Engineering Technology，2022，12（1）：308-313 doi: 10.12153/j.issn.1674-991X.20210398

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Exploration and application of emergency treatment methods for thallium pollution in rivers

doi: 10.12153/j.issn.1674-991X.20210398

WANG Panxin^{1, 2
,},
WU Changyong^{1, 2},
HU Yingming^{1, 2, 3},
FU Liya^{1, 2},
SONG Yudong^{1, 2
,
,},
XI Hongbo^{1, 2},
YU Yin^{1, 2},
ZHAO Meng^{1, 2}

1.
State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences
2.
Research Center of Environmental Pollution Control Engineering Technology, Chinese Research Academy of Environmental Sciences
3.
College of Urban and Environmental Science, Northwest University

Received Date: 2021-08-12

Abstract

Abstract

In recent years, thallium pollution incidents have occurred frequently, and the development of a practical and efficient emergency method for thallium removal has become an urgent need to improve eco-environment risk prevention and ensure drinking water safety. Taking an abnormal incidence of thallium concentration in a river as an example, the effectiveness and feasibility of four methods, including direct coagulation, oxidation+coagulation, oxidation+adsorption and sulfide precipitation, in the emergency treatment of thallium pollution were compared and analyzed. The results showed that the sulfide precipitation method could reduce the thallium concentration from about 5 times above the standard to less than 0.1 μg/L, meeting the limit requirement of thallium in the surface water source of centralized domestic drinking water in Environmental Quality Standards for Surface Water (GB 3838-2002). Maintaining pH in the river in the range of 8-9 through adding sodium hydroxide could effectively reduce the production of H₂S. This method was successfully applied to the emergency treatment of the abnormal thallium concentration incident and achieved good effects.
- thallium pollution,
- emergency disposal,
- sulfide precipitation,
- heavy metal,
- oxidation

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References

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Exploration and application of emergency treatment methods for thallium pollution in rivers

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