Energy consumption in a large- scale 3D electro-osmosis-hydraulic synergism system for sludge consolidation
The 3D electro-osmosis-hydraulic synergistic consolidation method is proposed based on the theory of electroosmosis and consolidation to solve the problem of the high energy consumption and large-scale simulation of practice conditions for low permeability and high-water content soils. A set of mult...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | zho |
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Editorial Office of Hydrogeology & Engineering Geology
2023-01-01
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| Series: | Shuiwen dizhi gongcheng dizhi |
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| Online Access: | https://www.swdzgcdz.com/en/article/doi/10.16030/j.cnki.issn.1000-3665.202112040 |
| _version_ | 1811169551176433664 |
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| author | Ruoxuan ZHENG Xiuli SUN Yu WANG Xun JIN Qinjie YU Wenhua LIU |
| author_facet | Ruoxuan ZHENG Xiuli SUN Yu WANG Xun JIN Qinjie YU Wenhua LIU |
| author_sort | Ruoxuan ZHENG |
| collection | DOAJ |
| description | The 3D electro-osmosis-hydraulic synergistic consolidation method is proposed based on the theory of electroosmosis and consolidation to solve the problem of the high energy consumption and large-scale simulation of practice conditions for low permeability and high-water content soils. A set of multi-functional catchment drainage systems combining the synergistic action of the cathode-catchment-intermittent pumping mode is developed. Consolidation of two types of Taihu lake sediments from the Gonghuwan wetland and Baimao Storage site are investigated using this system. Two key indicators of energy consumption per unit volume and displacement per unit volume of the 3D electro-osmosis-hydraulic synergistic consolidation system and the traditional 1D electroosmosis system are analyzed to illustrate the advantage of the 3D system. The results show that the design of water collecting well can greatly reduce the resistance near the soil cathode, intermittently improve the system current, improve the drainage efficiency and reduce the energy consumption. Intermittent pumping can intermittently reduce the system current, and maintain the continuity of system seepage by using the electric and hydraulic synergistic effect. A decrease-increase periodic decrease mode of the current for the 3D electrohydraulic seepage consolidation system is observed. The decrease rate of the current is slower than that of the 1D electro-osmotic system, especially for the soil with high organic matter content, the current in the electroosmotic process is maintained at a relatively higher level, which improves the drainage consolidation efficiency. The energy consumption per unit volume and displacement per unit volume of the 3D electro-hydraulic seepage consolidation system are about 2/3 and 1/30 that of the 1D electro-osmotic system, respectively. The 3D electro-hydraulic seepage consolidation system has remarkable energy saving effect in consolidation and drainage of soft soil with high water content. The 3D electroosmosis-hydraulic consolidation system can greatly improve the drainage consolidation efficiency, greatly reduce energy consumption and better guide the application of the proposed method to the electro-osmotic consolidation of high-water content sludge and another related field. |
| first_indexed | 2024-04-10T16:44:23Z |
| format | Article |
| id | doaj.art-6febb90e8df743d7a8cb131fbb492bb8 |
| institution | Directory Open Access Journal |
| issn | 1000-3665 |
| language | zho |
| last_indexed | 2024-04-10T16:44:23Z |
| publishDate | 2023-01-01 |
| publisher | Editorial Office of Hydrogeology & Engineering Geology |
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| series | Shuiwen dizhi gongcheng dizhi |
| spelling | doaj.art-6febb90e8df743d7a8cb131fbb492bb82023-02-08T01:42:17ZzhoEditorial Office of Hydrogeology & Engineering GeologyShuiwen dizhi gongcheng dizhi1000-36652023-01-01501697710.16030/j.cnki.issn.1000-3665.202112040202112040Energy consumption in a large- scale 3D electro-osmosis-hydraulic synergism system for sludge consolidationRuoxuan ZHENG0Xiuli SUN1Yu WANG2Xun JIN3Qinjie YU4Wenhua LIU5School of Environment and Civil Engineering, Jiangnan University, Wuxi, Jiangsu 214122, ChinaSchool of Environment and Civil Engineering, Jiangnan University, Wuxi, Jiangsu 214122, ChinaSchool of Environment and Civil Engineering, Jiangnan University, Wuxi, Jiangsu 214122, ChinaSchool of Environment and Civil Engineering, Jiangnan University, Wuxi, Jiangsu 214122, ChinaSchool of Environment and Civil Engineering, Jiangnan University, Wuxi, Jiangsu 214122, ChinaSchool of Environment and Civil Engineering, Jiangnan University, Wuxi, Jiangsu 214122, ChinaThe 3D electro-osmosis-hydraulic synergistic consolidation method is proposed based on the theory of electroosmosis and consolidation to solve the problem of the high energy consumption and large-scale simulation of practice conditions for low permeability and high-water content soils. A set of multi-functional catchment drainage systems combining the synergistic action of the cathode-catchment-intermittent pumping mode is developed. Consolidation of two types of Taihu lake sediments from the Gonghuwan wetland and Baimao Storage site are investigated using this system. Two key indicators of energy consumption per unit volume and displacement per unit volume of the 3D electro-osmosis-hydraulic synergistic consolidation system and the traditional 1D electroosmosis system are analyzed to illustrate the advantage of the 3D system. The results show that the design of water collecting well can greatly reduce the resistance near the soil cathode, intermittently improve the system current, improve the drainage efficiency and reduce the energy consumption. Intermittent pumping can intermittently reduce the system current, and maintain the continuity of system seepage by using the electric and hydraulic synergistic effect. A decrease-increase periodic decrease mode of the current for the 3D electrohydraulic seepage consolidation system is observed. The decrease rate of the current is slower than that of the 1D electro-osmotic system, especially for the soil with high organic matter content, the current in the electroosmotic process is maintained at a relatively higher level, which improves the drainage consolidation efficiency. The energy consumption per unit volume and displacement per unit volume of the 3D electro-hydraulic seepage consolidation system are about 2/3 and 1/30 that of the 1D electro-osmotic system, respectively. The 3D electro-hydraulic seepage consolidation system has remarkable energy saving effect in consolidation and drainage of soft soil with high water content. The 3D electroosmosis-hydraulic consolidation system can greatly improve the drainage consolidation efficiency, greatly reduce energy consumption and better guide the application of the proposed method to the electro-osmotic consolidation of high-water content sludge and another related field.https://www.swdzgcdz.com/en/article/doi/10.16030/j.cnki.issn.1000-3665.202112040electroosmosis-hydraulic synergismintermittent pumping3d consolidationlarge size electroosmotic testenergy consumptionsoft soil foundation |
| spellingShingle | Ruoxuan ZHENG Xiuli SUN Yu WANG Xun JIN Qinjie YU Wenhua LIU Energy consumption in a large- scale 3D electro-osmosis-hydraulic synergism system for sludge consolidation Shuiwen dizhi gongcheng dizhi electroosmosis-hydraulic synergism intermittent pumping 3d consolidation large size electroosmotic test energy consumption soft soil foundation |
| title | Energy consumption in a large- scale 3D electro-osmosis-hydraulic synergism system for sludge consolidation |
| title_full | Energy consumption in a large- scale 3D electro-osmosis-hydraulic synergism system for sludge consolidation |
| title_fullStr | Energy consumption in a large- scale 3D electro-osmosis-hydraulic synergism system for sludge consolidation |
| title_full_unstemmed | Energy consumption in a large- scale 3D electro-osmosis-hydraulic synergism system for sludge consolidation |
| title_short | Energy consumption in a large- scale 3D electro-osmosis-hydraulic synergism system for sludge consolidation |
| title_sort | energy consumption in a large scale 3d electro osmosis hydraulic synergism system for sludge consolidation |
| topic | electroosmosis-hydraulic synergism intermittent pumping 3d consolidation large size electroosmotic test energy consumption soft soil foundation |
| url | https://www.swdzgcdz.com/en/article/doi/10.16030/j.cnki.issn.1000-3665.202112040 |
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