Cargando…

Research and Application of High-Pressure Rotary Jet Method in the Seepage Treatment of Heavy Metal Tailing Ponds of Southwest China

The developed karst caves may become the seepage channels of heavy metal to the soil and underground water in Southwest China. Therefore, it is necessary to apply effective seepage treatments to the base of heavy metal tailing reservoirs. This paper addressed the high-pressure rotary jet technology...

Descripción completa

Detalles Bibliográficos
Autores principales: Liang, Mengjia, Jin, Chunzheng, Hou, Jiwu, Wang, Mengyuan, Shi, Yanping, Dong, Zichao, Yang, Xianyu, Zhou, Jianwei, Cai, Jihua
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2023
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10180357/
https://www.ncbi.nlm.nih.gov/pubmed/37176333
http://dx.doi.org/10.3390/ma16093450
_version_ 1785041317335662592
author Liang, Mengjia
Jin, Chunzheng
Hou, Jiwu
Wang, Mengyuan
Shi, Yanping
Dong, Zichao
Yang, Xianyu
Zhou, Jianwei
Cai, Jihua
author_facet Liang, Mengjia
Jin, Chunzheng
Hou, Jiwu
Wang, Mengyuan
Shi, Yanping
Dong, Zichao
Yang, Xianyu
Zhou, Jianwei
Cai, Jihua
author_sort Liang, Mengjia
collection PubMed
description The developed karst caves may become the seepage channels of heavy metal to the soil and underground water in Southwest China. Therefore, it is necessary to apply effective seepage treatments to the base of heavy metal tailing reservoirs. This paper addressed the high-pressure rotary jet technology and slurry systems used in the seepage treatment of the deep tailing sand of the Shenxiandong tailing pond located in Southwest China. In this study, the factors of fluidity, initial and final setting times, compressive strength, and permeability coefficient of the slurry were conducted. The mechanism analysis was investigated by X-ray diffraction (XRD), scanning electron microscope (SEM), and inductively coupled plasma-mass spectrometry (ICP-MS). Three different types of slurry systems were proposed, and the permeability coefficients of the solidification body following 28 days of curing were less than 1 × 10(−7) cm/s. The concentrations of Pb and Zn in the slurry system containing bentonite were reduced by 26.2% and 45.7%, respectively. In the presence of slaked lime and fly ash, the concentrations of Pb and Zn could be reduced by 26.8% and 30%, respectively. A total of 2142 high-pressure rotary jet piles were completed by the high-pressure rotary jet method in the field trial. The diffusion radius of these piles was over 1 m. Following 28 days of curing, the solidification body’s compressive strength was 7.45 MPa and the permeability coefficient was 6.27 × 10(−8) cm/s. Both the laboratory and on-site trials showed that this method produced a good pollution barrier effect, which could prevent the diffusion of heavy metal into the adjacent underground water through the karst caves. It is also an effective way of engineering technology concerning heavy metal pollution control that occurs in tailing ponds.
format Online
Article
Text
id pubmed-10180357
institution National Center for Biotechnology Information
language English
publishDate 2023
publisher MDPI
record_format MEDLINE/PubMed
spelling pubmed-101803572023-05-13 Research and Application of High-Pressure Rotary Jet Method in the Seepage Treatment of Heavy Metal Tailing Ponds of Southwest China Liang, Mengjia Jin, Chunzheng Hou, Jiwu Wang, Mengyuan Shi, Yanping Dong, Zichao Yang, Xianyu Zhou, Jianwei Cai, Jihua Materials (Basel) Article The developed karst caves may become the seepage channels of heavy metal to the soil and underground water in Southwest China. Therefore, it is necessary to apply effective seepage treatments to the base of heavy metal tailing reservoirs. This paper addressed the high-pressure rotary jet technology and slurry systems used in the seepage treatment of the deep tailing sand of the Shenxiandong tailing pond located in Southwest China. In this study, the factors of fluidity, initial and final setting times, compressive strength, and permeability coefficient of the slurry were conducted. The mechanism analysis was investigated by X-ray diffraction (XRD), scanning electron microscope (SEM), and inductively coupled plasma-mass spectrometry (ICP-MS). Three different types of slurry systems were proposed, and the permeability coefficients of the solidification body following 28 days of curing were less than 1 × 10(−7) cm/s. The concentrations of Pb and Zn in the slurry system containing bentonite were reduced by 26.2% and 45.7%, respectively. In the presence of slaked lime and fly ash, the concentrations of Pb and Zn could be reduced by 26.8% and 30%, respectively. A total of 2142 high-pressure rotary jet piles were completed by the high-pressure rotary jet method in the field trial. The diffusion radius of these piles was over 1 m. Following 28 days of curing, the solidification body’s compressive strength was 7.45 MPa and the permeability coefficient was 6.27 × 10(−8) cm/s. Both the laboratory and on-site trials showed that this method produced a good pollution barrier effect, which could prevent the diffusion of heavy metal into the adjacent underground water through the karst caves. It is also an effective way of engineering technology concerning heavy metal pollution control that occurs in tailing ponds. MDPI 2023-04-28 /pmc/articles/PMC10180357/ /pubmed/37176333 http://dx.doi.org/10.3390/ma16093450 Text en © 2023 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Liang, Mengjia
Jin, Chunzheng
Hou, Jiwu
Wang, Mengyuan
Shi, Yanping
Dong, Zichao
Yang, Xianyu
Zhou, Jianwei
Cai, Jihua
Research and Application of High-Pressure Rotary Jet Method in the Seepage Treatment of Heavy Metal Tailing Ponds of Southwest China
title Research and Application of High-Pressure Rotary Jet Method in the Seepage Treatment of Heavy Metal Tailing Ponds of Southwest China
title_full Research and Application of High-Pressure Rotary Jet Method in the Seepage Treatment of Heavy Metal Tailing Ponds of Southwest China
title_fullStr Research and Application of High-Pressure Rotary Jet Method in the Seepage Treatment of Heavy Metal Tailing Ponds of Southwest China
title_full_unstemmed Research and Application of High-Pressure Rotary Jet Method in the Seepage Treatment of Heavy Metal Tailing Ponds of Southwest China
title_short Research and Application of High-Pressure Rotary Jet Method in the Seepage Treatment of Heavy Metal Tailing Ponds of Southwest China
title_sort research and application of high-pressure rotary jet method in the seepage treatment of heavy metal tailing ponds of southwest china
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10180357/
https://www.ncbi.nlm.nih.gov/pubmed/37176333
http://dx.doi.org/10.3390/ma16093450
work_keys_str_mv AT liangmengjia researchandapplicationofhighpressurerotaryjetmethodintheseepagetreatmentofheavymetaltailingpondsofsouthwestchina
AT jinchunzheng researchandapplicationofhighpressurerotaryjetmethodintheseepagetreatmentofheavymetaltailingpondsofsouthwestchina
AT houjiwu researchandapplicationofhighpressurerotaryjetmethodintheseepagetreatmentofheavymetaltailingpondsofsouthwestchina
AT wangmengyuan researchandapplicationofhighpressurerotaryjetmethodintheseepagetreatmentofheavymetaltailingpondsofsouthwestchina
AT shiyanping researchandapplicationofhighpressurerotaryjetmethodintheseepagetreatmentofheavymetaltailingpondsofsouthwestchina
AT dongzichao researchandapplicationofhighpressurerotaryjetmethodintheseepagetreatmentofheavymetaltailingpondsofsouthwestchina
AT yangxianyu researchandapplicationofhighpressurerotaryjetmethodintheseepagetreatmentofheavymetaltailingpondsofsouthwestchina
AT zhoujianwei researchandapplicationofhighpressurerotaryjetmethodintheseepagetreatmentofheavymetaltailingpondsofsouthwestchina
AT caijihua researchandapplicationofhighpressurerotaryjetmethodintheseepagetreatmentofheavymetaltailingpondsofsouthwestchina