A refuse landfill underground water pollution restoration threshold determination method and system
A technology for landfill and groundwater pollution, which is applied in the field of determining the threshold of groundwater pollution remediation in landfills, can solve problems such as increasing the cost and difficulty of site remediation, enhance pertinence and accuracy, reduce workload, The effect of simplifying the formulation process
A technology for landfill and groundwater pollution, which is applied in the field of determining the threshold of groundwater pollution remediation in landfills, can solve problems such as increasing the cost and difficulty of site remediation, enhance pertinence and accuracy, reduce workload, The effect of simplifying the formulation process
CN112434907APending Publication Date: 2021-03-02CHINESE RES ACAD OF ENVIRONMENTAL SCI
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Embodiment 1
[0172] Taking the Beitiantang landfill in the southeast of Beijing as an example, the water supply area east of the Yongding River in Fengtai District is used as a typical research area, and the Yongding River is the evaluation point for the restoration threshold of the Beitangang landfill. The research area is located on the east side of the Yongding River in Fengtai District, Beijing, at the urban-rural fringe in the southwestern suburbs of Beijing, and the area is open. The geographic coordinates are 116°15′-116°22′ east longitude and 39°47′-39°50′ north latitude. The area is about 47.25km 2 .
[0173] (1) Primary assessment of environmental risk of Beitiantang Landfill
[0174] According to the survey, see Table 5 for the landfill characteristic scores of the 4 landfill plots in the Beitiantang Landfill, and Table 6 for the exposure evaluation.
[0175] Table 5 Evaluation of landfill characteristics of the four landfill plots at the North Paradise Landfill
[0176] ...
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The invention discloses a refuse landfill underground water pollution restoration threshold determination method and system, and the method comprises the steps of building a primary evaluation system,and carrying out the primary evaluation of environmental risks; dividing the risk into three levels according to the risk index, and formulating a corresponding repair threshold according to the levels; according to a target concentration method, calculating a restoration threshold value of the landfill with the risk grade being an intermediate grade; and using a health risk evaluation method toformulate a restoration threshold value of the polluted site with an advanced risk level. For landfills with intermediate risk levels and high risk levels, the migration and transformation process ofunderground water in the hydraulic gradient direction is numerically simulated, and landfill pollution remediation thresholds are deduced. According to the method, the formulation procedure of the remediation threshold of the medium-high risk contaminated site is simplified, the workload is reduced, and the pertinence and accuracy of the remediation threshold of the contaminated site in the high risk area are enhanced.
Description
technical field [0001] The invention relates to the field of groundwater environment evaluation and restoration, and more particularly relates to a method and system for determining the threshold value of groundwater pollution restoration at a landfill site. Background technique [0002] With the development of the economy, the municipal solid waste has increased dramatically. A large amount of landfill leachate is produced during the landfill process of garbage. If it is not handled properly, it will leak and pollute the environment. Some early domestic waste landfills in my country did not use or only adopted simple anti-seepage treatment facilities, which could not avoid the leakage of leachate during operation, which would cause certain risks to soil and groundwater. Although some sanitary landfills of domestic waste in my country have taken environmental protection engineering measures such as anti-seepage, compaction, covering and collection systems in structural desi...
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Patent Timeline
02 Mar 2021
Publication
CN112434907A
- IPC
- G06Q10/06; G06Q50/26
- CPC
- G06Q10/0635; G06Q10/06393; G06Q50/26
- Inventors
- 纪丹凤; 席北斗