A Soil Remediation Monitoring System with Landscape Effects
By setting up clay, barrier, gravel, and planting soil layers in the remediation area, combined with monitoring wells and greening, the problems of low aesthetics and low monitoring efficiency in the remediation area were solved, achieving a soil remediation system that combines landscape effects with effective monitoring.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHANGHAI LANDSCAPE ARCHITECTURE DESIGN & RES INST CO LTD
- Filing Date
- 2025-06-24
- Publication Date
- 2026-06-30
AI Technical Summary
During the remediation of contaminated soil, the exposed areas affect aesthetics and remain unused, and the lack of effective monitoring methods leads to low aesthetics and monitoring efficiency.
A clay layer, a barrier layer, a gravel layer, and a planting soil layer are set above the remediation area. Combined with groundwater and soil gas monitoring wells, the landscaping and monitoring functions are realized. HDPE geomembrane and geotextile are used to increase the barrier effect, EPS foam is used to lighten the planting soil layer, and gas exhaust pipes are used to assist in exhaust.
It achieves aesthetic enhancement during the restoration process, while providing effective gas and water monitoring to meet landscape requirements and support data collection during the soil remediation process.
Smart Images
Figure CN224419479U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of soil remediation engineering, specifically to a soil remediation monitoring system with landscape effects. Background Technology
[0002] In contaminated soil remediation projects, such as the in-situ remediation of organic-contaminated soil, existing technologies employ in-situ oxidation, injecting chemical oxidants, such as persulfate and activated persulfate, into the contaminated soil. This causes the organic matter in the soil to undergo an oxidation reaction, thereby being degraded or decomposed into other less toxic substances, or completely mineralized into carbon dioxide and water. Existing technologies also include bioremediation for organic-contaminated soil. For example, lignin-degrading enzymes secreted by fungi can oxidize and degrade polycyclic aromatic hydrocarbons (PAHs), while dehalogenases, nitroreductases, peroxidases, laccases, and nitrile hydrolases can degrade various persistent organic pollutants such as trichloroethylene, 2,4,6-trinitrotoluene, PAHs, and polychlorinated biphenyls (PCBs).
[0003] For some in-situ remediation projects of contaminated soil with long remediation cycles, the main task during the soil remediation period is to monitor the water and gas levels in the soil to be remediated and adjust measures accordingly based on the monitoring results. During the remediation period, the area of soil to be remediated is basically idle, and the exposed land affects the aesthetics. Utility Model Content
[0004] To address the issue of land being left idle during the soil remediation process, this invention provides a soil remediation monitoring system with a landscape effect, which combines landscape with the monitoring of the soil to be remediated, satisfying daily monitoring needs while decorating the ground surface.
[0005] The technical objective of this utility model is achieved through the following technical solution:
[0006] A soil remediation monitoring system with landscape effects comprises, in sequence, a clay layer, a barrier layer for water and air isolation, a clay layer, a gravel layer, and a planting soil layer above the soil area to be remediated. The planting soil layer is used for landscaping and greening. Groundwater monitoring wells are buried vertically downward along the planting soil layer, extending downward into the soil layer of the soil area to be remediated. The groundwater monitoring wells are equipped with filter holes within a height range below the corresponding barrier layer. Soil gas monitoring wells are buried vertically downward along the planting soil layer, extending downward into the gravel layer.
[0007] Furthermore, a gas guide pipe is horizontally buried within the gravel layer, and the gas guide pipe is connected to a gas suction device.
[0008] Furthermore, a root-blocking layer is laid in the clay layer above the barrier layer to block plant roots, and the root-blocking layer is positioned near the center of the thickness of the clay layer above the barrier layer.
[0009] Furthermore, the thickness of the planting soil layer is 2-2.5m. The planting soil layer is laid on top of the gravel layer to form a flat area and a raised area. The top of the raised area protrudes 1.5-2m relative to the flat area. The groundwater monitoring well and the soil gas monitoring well are buried in the flat area.
[0010] Furthermore, EPS foam filler blocks are placed beneath the raised area of the planting soil layer.
[0011] Furthermore, the barrier layer includes an HDPE geomembrane layer.
[0012] Furthermore, the barrier layer also includes a geotextile layer laid above and / or below the HDPE geomembrane layer.
[0013] Furthermore, the upper ends of the groundwater monitoring well and the soil gas monitoring well extend above the planting layer in the flat area, respectively, and sealing covers are installed at the upper ends of the groundwater monitoring well and the soil monitoring well.
[0014] Furthermore, the groundwater monitoring well is also equipped with a sealing ring in the area where it passes through the barrier layer. The sealing ring is fitted onto the outer wall of the groundwater monitoring well and is set above the barrier layer.
[0015] Compared with the prior art, the beneficial effects of this utility model are as follows:
[0016] This utility model avoids the pollution of the planting soil by the soil to be repaired by laying a clay layer, a barrier layer, a clay layer, a gravel layer and a planting soil layer on top of the soil to be repaired, thus creating conditions for planting landscape greening in the soil to be repaired area.
[0017] By planting landscape greenery in the soil layer, the soil remediation process is made beneficial to the soil and its aesthetics are enhanced.
[0018] In addition, groundwater monitoring wells and soil gas monitoring wells facilitate the collection and measurement of gases and water bodies, providing monitoring data for the soil remediation process. Attached Figure Description
[0019] Figure 1 This is a schematic diagram of the setup of the soil remediation monitoring system with landscape effects according to this utility model.
[0020] In the picture:
[0021] 1. Soil area to be remediated; 2. Clay layer; 3. Barrier layer; 4. Gravel layer; 5. Planting soil layer; 6. Groundwater monitoring well; 7. Soil gas monitoring well; 8. EPS foam filling block; 9. Sealing ring; 10. Gas discharge horizontal pipe; 11. Root barrier layer. Detailed Implementation
[0022] The technical solution of this utility model will be further described below with reference to specific embodiments:
[0023] A soil remediation monitoring system with landscape-enhancing effects, such as Figure 1 As shown, after remediation measures are taken in the soil area to be remediated, activated persulfate oxidant is injected into the soil to be remediated by pressurization. Above the soil area to be remediated 1, a clay layer 2, a barrier layer 3 for water and air barrier, a clay layer 2, a gravel layer 4, and a planting soil layer 5 are set in sequence. The planting soil layer 5 is used for landscaping and greening.
[0024] More specifically, the thickness of the planting soil layer is 2-2.5m. The planting soil layer is laid on top of the gravel layer to form a flat area and a raised area. The top of the raised area protrudes 1.5-2m relative to the flat area.
[0025] A groundwater monitoring well 6 is vertically buried downwards along the gentle slope of the planting soil layer 5. The groundwater monitoring well 6 extends downwards into the soil layer of the soil area 1 to be remediated. The groundwater monitoring well 6 has filter holes within the height range below the corresponding barrier layer 3. Groundwater in the soil area to be remediated can seep into the groundwater monitoring well 6 through the filter holes. A soil gas monitoring well 7 is vertically buried downwards along the gentle slope of the planting soil layer 5. The lower end of the soil gas monitoring well 7 extends downwards into the gravel layer 4. Although the barrier layer 3 has a certain effect on blocking gas, some gas will still escape. The soil gas monitoring well 7 facilitates the sampling and detection of the composition and density of the escaped gas.
[0026] The upper ends of groundwater monitoring well 6 and soil gas monitoring well 7 extend to the planting layer above the flat area. Sealing covers are installed at the upper ends of groundwater monitoring well 6 and soil monitoring well 7 respectively. When sampling, the sealing covers are opened for sampling, and when not sampling, the well openings are sealed by the sealing covers.
[0027] More specifically, the barrier layer 3 includes an HDPE geomembrane layer. To increase the strength of the barrier layer 3, the barrier layer also includes a geotextile layer laid above and / or below the HDPE geomembrane layer. Preferably, a geotextile layer is laid above and below the HDPE geomembrane layer, respectively.
[0028] When there is a new building, the barrier layer should be laid extending to the area beneath the building, and the barrier layer should be laid before the construction of the new building.
[0029] As a preferred option, EPS foam filler blocks 8 are also filled below the raised area of the planting soil layer 5. EPS foam filler blocks are a type of polystyrene foam, an existing material. By replacing part of the planting soil with EPS foam filler blocks 8, the weight of the planting soil can be reduced while meeting the thickness requirements of the planting layer, thus reducing the compression on the lower barrier layer 3.
[0030] Preferably, the groundwater monitoring well 6 is also provided with a sealing ring 9 in the area where it passes through the barrier layer 3. The sealing ring 9 is fitted onto the outer wall of the groundwater monitoring well 6 and is attached to the top of the barrier layer 3. In a specific embodiment, the sealing ring can be made of the same material as the HDPE geomembrane layer. The sealing ring is fixed to the outer wall of the groundwater monitoring well 6 by cable ties, and the sealing ring is attached to the area where the groundwater monitoring well passes through the barrier layer by pressing the clay layer, thereby increasing the water tightness and air tightness of the well pipe.
[0031] Preferably, a gas guide pipe 10 is horizontally buried in the gravel layer 4. The outer wall of the gas guide pipe 10 is provided with several ventilation holes. The diameter of the ventilation holes should be smaller than the particle size of the gravel layer. The gas guide pipe 10 is connected to a gas suction device, such as an axial flow fan. When the concentration of harmful gas exceeds the safe value after sampling and testing at the soil gas monitoring well 7, the gas suction device can be turned on for auxiliary exhaust.
[0032] Preferably, a root-blocking layer 11 is also laid in the clay layer 2 above the barrier layer 3 to block plant roots. The root-blocking layer 11 is positioned near the center of the thickness of the clay layer 2 above the barrier layer 3. The root-blocking layer can be made of TPO root-penetration resistant waterproof membrane, which has a good physical root-blocking effect and prevents plant roots from damaging the barrier layer 3.
[0033] More specifically, in one embodiment, the clay layer below the barrier layer is 0.5m thick, the clay layer above the barrier layer is 1.3m thick, the root barrier layer is laid at a height of 0.5m from the barrier layer, the gravel layer is 0.4m thick, the planting soil layer in the flat area is 0.6m thick, and the planting soil layer in the raised area has a maximum protrusion height of 2m relative to the flat area. Lawns and flowers can be planted in the flat areas, while trees and shrubs can be planted in the raised areas.
[0034] This embodiment is merely a further explanation of the present invention and is not intended to limit the present invention. After reading this specification, those skilled in the art can make non-inventive modifications to this embodiment as needed, but such modifications are protected by patent law as long as they fall within the scope of the claims of the present invention.
Claims
1. A soil remediation monitoring system with landscape effects, characterized in that, Above the soil area to be remediated, a clay layer, a barrier layer for water and air isolation, a clay layer, a gravel layer, and a planting soil layer are arranged in sequence. The planting soil layer is used for landscaping and greening. A groundwater monitoring well is buried vertically downward along the planting soil layer, extending downward into the soil layer of the soil area to be remediated. The groundwater monitoring well has a filter hole within a height range below the corresponding barrier layer. A soil gas monitoring well is buried vertically downward along the planting soil layer, extending downward into the gravel layer.
2. The soil remediation monitoring system with landscape effects according to claim 1, characterized in that, A gas guide pipe is horizontally buried within the gravel layer, and the gas guide pipe is connected to a gas suction device.
3. The soil remediation monitoring system with landscape effects according to claim 1, characterized in that, A root-blocking layer is also laid in the clay layer above the barrier layer to block plant roots. The root-blocking layer is located near the center of the thickness of the clay layer above the barrier layer.
4. The soil remediation monitoring system with landscape effects according to claim 1, characterized in that, The thickness of the planting soil layer is 2-2.5m. The planting soil layer is laid on top of the gravel layer to form a flat area and a raised area. The top of the raised area protrudes 1.5-2m relative to the flat area. The groundwater monitoring well and the soil gas monitoring well are buried in the flat area.
5. The soil remediation monitoring system with landscape effects according to claim 4, characterized in that, The raised area of the planting soil layer is also filled with EPS foam filler blocks.
6. The soil remediation monitoring system with landscape effects according to claim 1, characterized in that, The barrier layer includes an HDPE geomembrane layer.
7. A soil remediation monitoring system with landscape effects according to claim 6, characterized in that, The barrier layer also includes a geotextile layer laid above and / or below the HDPE geomembrane layer.
8. The soil remediation monitoring system with landscape effect according to claim 4, characterized in that, The upper ends of the groundwater monitoring well and the soil gas monitoring well extend above the planting layer in the flat area, respectively, and sealing covers are provided at the upper ends of the groundwater monitoring well and the soil monitoring well.
9. A soil remediation monitoring system with landscape effects according to claim 1, characterized in that, The groundwater monitoring well is also equipped with a sealing ring in the area passing through the barrier layer. The sealing ring is fitted onto the outer wall of the groundwater monitoring well and is attached to the top of the barrier layer.