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Mixed solid waste pile point soil pollution risk management and control method based on horizontal barrier technology

A soil pollution and horizontal technology, applied in the sewer system, waterway system, water supply device, etc., can solve the problems of discarded tennis ball pollution, hidden danger of pollutant diffusion, insufficient heat preservation effect, etc., achieve good crack resistance and earthquake resistance, and facilitate walking maintenance , the effect of low water absorption

Active Publication Date: 2021-12-03
SOUTH CHINA INST OF ENVIRONMENTAL SCI MEP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Solved the insufficient insulation effect of some insulation materials and the pollution of discarded tennis balls
Good results can be achieved in the horizontal direction, but there are certain hidden dangers of pollutant diffusion in the vertical direction.

Method used

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  • Mixed solid waste pile point soil pollution risk management and control method based on horizontal barrier technology
  • Mixed solid waste pile point soil pollution risk management and control method based on horizontal barrier technology
  • Mixed solid waste pile point soil pollution risk management and control method based on horizontal barrier technology

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] The risk control method for soil pollution at mixed solid waste dump sites based on horizontal barrier technology includes the following steps:

[0036] S1 site selection and leveling site: Select Banpo Slope 1 with a slope of 7° and no development plan in the near future, and level off Banpo Slope 1 to remove plants;

[0037] S2 Excavation of solid waste pile point: A row of cement-soil mixing piles 3 is evenly arranged 5m downstream of the preset solid waste pile point 2. In the natural continuous anti-seepage clay layer 3 meters below the surface, the permeability coefficient of the natural continuous anti-seepage clay layer in this area is low, which is 10 -7 cm / s, and then excavated along the vertical direction of the half slope with a volume of 3000m 3 The solid waste pile point 2 is arranged in an arc at the bottom of the solid waste pile point 2, and a high-density polyethylene film HDPE is laid on the bottom of the solid waste pile point 2. The high-density po...

Embodiment 2

[0042] This embodiment is basically the same as Embodiment 1, the difference lies in that the slopes of the selected half-slope bodies are different.

[0043] S1 site selection and leveling site: Select Banpo Slope 1 with a slope of 15° and no development plan in the near future, and level off Banpo Slope 1 to remove plants;

Embodiment 3

[0045] This embodiment is basically the same as Embodiment 1, the difference lies in that the slopes of the selected half-slope bodies are different.

[0046] S1 site selection and leveling site: Select Banpo Slope 1 with a slope of 20° and no development plan in the near future, and level off Banpo Slope 1 to remove plants;

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Abstract

The invention discloses a mixed solid waste pile point soil pollution risk management and control method based on a horizontal barrier technology. The method comprises the following steps that S1, a flat site is selected; S2, solid waste pile point excavation is conducted, specifically, a row of cement soil stirring piles are evenly distributed in the downstream direction of a preset solid waste pile point, the lower portions of the cement soil stirring piles extend into a natural continuous anti-seepage clay layer 3-8 m below the earth surface, then the solid waste pile point of the specified size is excavated in the half slope vertical direction, and a high-density polyethylene film HDPE is laid at the bottom of the solid waste pile point; S3, solid waste pouring and compacting are carried out; S4, a horizontal barrier is established; and S5, an underground water monitoring well is established. According to the risk management and control method, the exposure path of pollutants is blocked, the risks of downstream underground water and surface water pollution and the like caused by rainwater infiltration, surface runoff and underground runoff are reduced, the top is covered with HDPE and a composite geomembrane, and long-term monitoring and maintenance are carried out after greening recovery and blocking are completed, so that the effectiveness of risk management and control measures of the blocking technology is determined.

Description

technical field [0001] The invention relates to the technical field of mixed solid waste pollution risk management and control, in particular to a method for controlling soil pollution risk at mixed solid waste dump sites based on horizontal barrier technology. Background technique [0002] In recent years, with the rapid development of urban industrialization, more and more mixed metal solid wastes are produced in some metallurgical, chemical and manufacturing industries. If these hazardous mixed solid wastes cannot be properly settled, It will have a great impact on the environment and endanger people's health. Therefore, the disposal of hazardous mixed solid waste must be done carefully and properly, actively respond to the policy call of the national government, and implement risk management and control for the purpose of preventing the spread of pollution. [0003] At present, the commonly used risk control methods for mixed solid waste include covering barrier technol...

Claims

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Application Information

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IPC IPC(8): E02D31/00E02D5/46E03F3/04E02D29/12E03F5/10
CPCE02D31/00E02D5/46E03F3/046E02D29/12E03F5/10Y02W30/30
Inventor 陈岩贽张钦凯马骏彭香琴苏宁曲丹丁洁王炜温春宇张文杰陶诗阳陈禧
Owner SOUTH CHINA INST OF ENVIRONMENTAL SCI MEP
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