Study on Photodegradation of Organic Depressants in Wastewater from Molybdenum-lead Separation and Wastewater Recycle

ZHONG Zaiding; WU Guiye; CHEN Lijuan; YAO Hui; WANG Hui; WANG Yiqing

doi:10.13779/j.cnki.issn1001-0076.2022.02.017

2022 Vol. 42, No. 2

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Article navigation > Conservation and Utilization of Mineral Resources > 2022 > 42(2): 126-130

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ZHONG Zaiding, WU Guiye, CHEN Lijuan, YAO Hui, WANG Hui, WANG Yiqing. Study on Photodegradation of Organic Depressants in Wastewater from Molybdenum-lead Separation and Wastewater Recycle[J]. Conservation and Utilization of Mineral Resources, 2022, 42(2): 126-130. doi: 10.13779/j.cnki.issn1001-0076.2022.02.017

Citation:

ZHONG Zaiding, WU Guiye, CHEN Lijuan, YAO Hui, WANG Hui, WANG Yiqing. Study on Photodegradation of Organic Depressants in Wastewater from Molybdenum-lead Separation and Wastewater Recycle[J]. Conservation and Utilization of Mineral Resources, 2022, 42(2): 126-130. doi: 10.13779/j.cnki.issn1001-0076.2022.02.017

Study on Photodegradation of Organic Depressants in Wastewater from Molybdenum-lead Separation and Wastewater Recycle

1.
Technical Center, Jinduicheng Molybdnum Co., Ltd., Xi'an 710077, Shaanxi, China
2.
Beijing General Research Institute of Mining and Metallurgy, Beijing 100044, China
3.
State Key Laboratory of Mineral Processing, Beijing 100044, China

More Information

Corresponding author: WU Guiye, wuguiye@bgrimm.com

Received Date: 01 April 2022

Publish Date: 25 April 2022

Abstract

Abstract

The undecomposed residue of molybdenum-lead separation inhibitors remain in wastewater stream makes it difficult to be recycled. To tackle this issue, photodegradable inhibitor LM was used for molybdenum-lead separation, and the degradation kinetics of inhibitor in molybdenum-lead separation wastewater was also studied. The degradation method was photodegradation, and the effects of different light sources such as sunlight irradiation and ultraviolet light irradiation on the degradation rate were studied respectively. The results show that both sunlight and ultraviolet light sources can accelerate the decomposition process of LM, and the final degradation rate can reach more than 99.9%. The effect of different pH values on the degradation of LM in molybdenum-lead separation wastewater stream was further studied, which indicates that, the degradation rate was accelerated in an acidic environment. The verification flotation tests were conducted, the results of which suggest the molybdenum-lead separation wastewater after photodegradation can be directly reused. It is beneficial to clean production, energy saving and emission reduction.
- molybdenum-lead separation /
- photodegradation depressant /
- wastewater recycling /
- flotation /

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References

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